CN117801435A - Biomimetic elastic materials, biomimetic elastomers, preparation methods and applications - Google Patents

Abstract

The invention discloses bionic elastic materials, bionic elastomers, preparation methods and applications. 1. Its raw materials include PVC paste resin, modifier and heat stabilizer, and the mass ratio of the three is 49-52:46-48:2 ; Wherein, the PVC paste resin is P440 or P450 brand, the heat stabilizer is a liquid calcium zinc stabilizer, and the modifier consists of diisononyl phthalate, butyl benzyl phthalate, It is composed of dioctyl sebacate and epoxidized soybean oil; it is suitable for target soft tissue materials under blunt impact conditions. Its mechanical properties and constitutive properties are similar to biological soft tissues to a certain extent, and are similar to traditional dummy soft tissue materials. Compared with other products, it has higher bionics, softer texture, more accurate response to complex external working conditions, good crash resistance, easy production, and can be stored for a long time. At the same time, the manufacturing cost is low, and it has broad application prospects.

Description

Biomimetic elastic materials, biomimetic elastomers, preparation methods and applications

Technical field

The present invention relates to the technical field of bionic materials, and specifically relates to a bionic elastic material, a preparation method and an application.

Background technique

In the existing technology, research on the impact load on the human body is called trauma ballistics. In related trauma experiments, it is necessary to use targets made of materials with the same mechanical properties as human muscles, fat, skin and other soft tissues for impact experiments. Obtain experimental data that is closer to real people.

At present, the soft tissue simulators of lifelike dummies only have the surface PVC skin layer and foam filling body, and there are no muscle and fat simulators. In addition, the skin layer has a hard texture and its mechanical properties are quite different from those of the human body. Therefore, it is impossible to obtain more accurate data when used as a blunt impact target.

Because traditional rubber, silicone, plastic and other materials cannot accurately match the stress of various tissues and organs; while gelatin, used to simulate human muscles and fat, although its density and biomechanical properties are very similar to human muscles and fat, its The use conditions are inconvenient and are greatly affected by temperature. They cannot be stored for a long time at room temperature and must be operated at low temperatures.

Therefore, there is a need to provide a bionic elastic material with higher bionics, which can make more accurate bionic responses to complex external working conditions, is easy to produce, and is suitable for blunt impact on target soft tissues, as well as a preparation method and application thereof, and further to provide a bionic elastomer based thereon and a preparation method and application thereof.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, the present invention provides a bionic elastic material with higher bionics, which can make more accurate bionic response to complex external working conditions, is easy to produce, and is suitable for blunt impact on target soft tissue, as well as a preparation method and application thereof, and further provides a bionic elastomer based thereon and a preparation method and application thereof.

In the first aspect, the present invention provides a bionic elastic material, the raw materials of which include PVC paste resin, modifier and heat stabilizer, and the mass ratio of the three is 49-52:46-48:2;

The PVC paste resin is of P440 or P450 grade, the heat stabilizer is a liquid calcium zinc stabilizer, and the modifier is composed of diisononyl phthalate, butyl benzyl phthalate, dioctyl sebacate and epoxidized soybean oil.

The raw materials also include reinforcing bodies. The mass ratio of PVC paste resin, modifier, heat stabilizer and reinforcing bodies is 49-52:46-48:2:1.

The mass ratio of each component in the modifier is:

Diisononyl phthalate: Butylbenzyl phthalate: Dioctyl sebacate: Epoxidized soybean oil = 39-45:6-7:2.4:1.6.

In a second aspect, the present invention further provides a method for preparing a bionic elastic material, comprising the following steps:

S1. Pour diisononyl phthalate, butyl benzyl phthalate, dioctyl sebacate, and epoxidized soybean oil into the same container in proportion, stir magnetically for 5 minutes; then stabilize the liquid calcium and zinc Pour in the solution and stir magnetically for 5 minutes;

S2. Pour the mixture prepared in S1 into a container containing PVC paste resin, and stir while pouring. After pouring all the mixture, stir until the resin powder and the modifier are completely fused, and then stop to obtain the mixed base material;

S3. Electrically stir the mixed base material obtained in S2 for 1 hour at room temperature, including slow stirring for 30 minutes and a stirring speed of 300 rpm, and rapid stirring for 30 minutes and a stirring speed of 1200 rpm;

S4. Let the mixed base material stirred in S3 stand at room temperature for more than 48 hours. After the internal components have fully reacted and reached saturation, the final base material is obtained, which is the bionic elastic material as mentioned above;

Among them, the mass ratio of PVC paste resin, modifier and heat stabilizer is 49-52:46-48:2; diisononyl phthalate, butyl benzyl phthalate, sebacic acid Dioctyl ester and epoxidized soybean oil constitute the modifier, and the corresponding mass ratio is 39-45:6-7:2.4:1.6.

In a third aspect, the present invention also provides another method for preparing a bionic elastic material. Based on the second aspect,

In S1, a liquid calcium zinc stabilizer is poured in and a reinforcing body fumed silica is added at the same time, and then subsequent preparation is performed to obtain a final base material as the bionic elastic material as claimed in claim 2;

Among them, the mass ratio of PVC paste resin, modifier, heat stabilizer and fumed silica is 49-52:46-48:2:1.

In a fourth aspect, the present invention provides a bionic elastomer, the raw materials of which include the bionic elastic material as mentioned above, and a diluent, wherein the mass ratio of the bionic elastic material and the diluent is 1:2.5-3, and the diluent is Diisononyl phthalate.

In a fifth aspect, the present invention also provides a bionic elastomer preparation method, which includes the following steps:

S5. On the basis of the third aspect, the biomimetic elastic material obtained in S4 and diisononyl phthalate were mixed in a mass ratio of 1:2.5-3 and magnetically stirred for 5 min;

S6. The mixed material stirred in S5 is placed in a vacuum environment and evacuated at -0.1 MPa until no bubbles are generated in the mixed material;

S7. After cleaning the bionic mold and spraying the stripping agent, heat it to 115°C and then cool it to 100°C;

S8. Pour the mixed material treated by S6 into the bionic mold treated by S7, and heat it until the mixed material reaches 155°C, take it out and let it cool naturally;

S9. Cool and vulcanize the mixed material in the bionic mold treated by S8 for 7-8 hours and then demould it to obtain a bionic elastomer.

In a sixth aspect, the present invention provides an application of a bionic elastomer, characterized in that the bionic elastomer as described above is used to make a biological muscle bionic PVC elastomer or to make a biological fat bionic PVC elastomer.

In a seventh aspect, the present invention further provides an application of a bionic elastic material. The bionic elastic material as described above is used to produce bionic skin bionic PVC elastomer.

Specifically, the method for making the biological skin bionic PVC elastomer is as follows:

T5. On the basis of claim 5, place the bionic elastic material prepared by S4 in a vacuum environment and evacuate it under the condition of -0.1MPa until no bubbles are generated in the mixed material;

T6. Pour the mixed material treated with T5 into a thermal bionic mold that has been cleaned and sprayed with release agent, and heated until the mixed material reaches 164°C. Take it out and naturally cool it to normal temperature before demoulding to obtain bionic skin bionic PVC elasticity. body.

The technical solution of the present invention has the following advantages:

The performance of the bionic elastic material in the present invention is similar to the mechanical properties of biological soft tissue, and the corresponding bionic elastomer can be pointed out through the mold. It is suitable for target soft tissue materials under blunt impact conditions, and its mechanical properties and constitutive properties are both to a certain extent. It is similar to biological soft tissue. Compared with traditional dummy soft tissue materials, it has higher bionics, softer texture, more accurate response to complex external working conditions, good crash resistance, easy production, and can be stored for a long time. , and at the same time, the manufacturing cost is low, and it is suitable for the development of new dummies in the fields of automobiles, military industry, etc., and has broad application prospects.

Description of drawings

In order to more clearly explain the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description The drawings illustrate some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting any creative effort.

FIG1 is a quasi-static tensile stress-strain diagram of the bio-muscle bionic PVC elastomer and the bio-fat bionic PVC elastomer of the present invention;

Figure 2 is a quasi-static compressive stress-strain diagram of the biological muscle bionic PVC elastomer according to the present invention;

Figure 3 is a quasi-static compressive stress-strain diagram of the biofat bionic PVC elastomer according to the present invention;

FIG. 4 is a quasi-static tensile stress-strain diagram of the biological skin biomimetic PVC elastomer of the present invention.

Detailed ways

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. The following content is only an example and explanation of the concept of the present invention. The technicians in the relevant technical field make various modifications or supplements to the specific implementation cases described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the claims, they should all belong to the protection scope of the present invention. The experimental reagents and materials used in the following examples, unless otherwise specified, can all be obtained from commercial channels.

First, this application provides a bionic elastic material, the raw materials of which include PVC paste resin, modifier and heat stabilizer, and the mass ratio of the three is 49-52:46-48:2; wherein, the PVC paste resin It is P440 or P450 brand, the heat stabilizer is a liquid calcium zinc stabilizer, and the modifier is composed of diisononyl phthalate, butyl benzyl phthalate, dioctyl sebacate and cyclic Composed of oxygenated soybean oil. Specifically, the mass ratio of each component in the modifier is: diisononyl phthalate: butyl benzyl phthalate: dioctyl sebacate: epoxy soybean oil = 39-45 :6-7:2.4:1.6.

The corresponding preparation method of the above-mentioned bionic elastic material includes the following steps:

S1. Pour diisononyl phthalate, butyl benzyl phthalate, dioctyl sebacate and epoxidized soybean oil into the same container in proportion and stir magnetically for 5 minutes; then pour in liquid calcium zinc stabilizer and stir magnetically for 5 minutes;

S2. The mixture prepared in S1 is poured into a container containing PVC paste resin, and stirred while pouring. After all the mixture is poured in, stirring is stopped until the resin powder and the modifier are completely dissolved to obtain a mixed base material;

S3. Electrically stir the mixed base material obtained in S2 for 1 hour at room temperature, including slow stirring for 30 minutes and a stirring speed of 300 rpm, and rapid stirring for 30 minutes and a stirring speed of 1200 rpm;

S4. Let the mixed base material stirred in S3 stand at room temperature for more than 48 hours. After the internal components have fully reacted and reached saturation, the final base material is obtained, which is the bionic elastic material as mentioned above;

Among them, the mass ratio of PVC paste resin, modifier and heat stabilizer is 49-52:46-48:2; diisononyl phthalate, butyl benzyl phthalate, dioctyl sebacate and epoxy soybean oil constitute the modifier, and the corresponding mass ratio is 39-45:6-7:2.4:1.6.

At the same time, this application also provides a corresponding bionic elastomer based on the above-mentioned bionic elastic material. The raw materials include the above-mentioned bionic elastic material and diluent, wherein the mass ratio of bionic elastic material and diluent is 1:2.5- 3. The diluent is diisononyl phthalate.

The specific preparation method of the bionic elastomer comprises the following steps:

S5. Mix the bionic elastic material prepared in S4 and diisononyl phthalate in a mass ratio of 1:2.5-3, and stir magnetically for 5 minutes;

S6. Place the mixed material stirred in S5 in a vacuum environment and evacuate it under the condition of -0.1MPa until no bubbles are generated in the mixed material;

S7. After cleaning the bionic mold and spraying the release agent, heat it to 115°C and then take it out and cool it to 100°C;

S8. Pour the mixed material treated by S6 into the bionic mold treated by S7, and heat it until the mixed material reaches 155°C, take it out and let it cool naturally;

S9. Cool and vulcanize the mixed material in the bionic mold treated with S8 for 7-8 hours and then demould to obtain the bionic elastomer.

Furthermore, the present application provides a bionic elastomer suitable for making a biological muscle bionic PVC elastomer or a biological fat bionic PVC elastomer.

Secondly, based on the above, the present application also provides another bionic elastic material. Based on the above bionic elastic material, the raw materials of the bionic elastic material also include a reinforcement, namely, fumed silica, and the mass ratio of PVC paste resin, modifier, heat stabilizer and reinforcement is 49-52:46-48:2:1.

The difference in the preparation method is that in S1, the liquid calcium zinc stabilizer is poured and the reinforcing body fumed silica is added at the same time, and then subsequent preparation is performed to obtain the final base material as claimed in claim 2 bionic elastic materials;

Among them, the mass ratio of PVC paste resin, modifier, heat stabilizer and fumed silica is 49-52:46-48:2:1.

This kind of bionic elastic material is suitable for making bionic skin bionic PVC elastomer, because the fumed silica can ensure that the strength of the bionic elastic material is close to that of the bionic elastic material while the elongation at break will not be too low, so it is more suitable for tensile strength. Taller, softer bionic skin bionic.

Specifically, the method for making bionic skin bionic PVC elastomer is as follows:

T5. Place the bionic elastic material prepared by S4 in a vacuum environment and evacuate it under the condition of -0.1MPa until no bubbles are generated in the mixed material;

T6. Pour the mixed material treated with T5 into a thermal bionic mold that has been cleaned and sprayed with a release agent, and heated until the mixed material reaches 164°C. Take it out and cool it naturally to normal temperature before demoulding to obtain bionic skin bionic PVC elasticity. body.

Example 1

This embodiment provides a biological muscle bionic PVC elastomer, the raw material of which is composed of a mixture of PVC paste resin, modifier, and heat stabilizer, and the component mass is calculated as 100%;

Among them, PVC paste resin accounts for 49%, and P440 grade is selected, with a polymerization degree of 1500 and good transparency;

The modifier accounts for 49%, consisting of 39% diisononyl phthalate (DINP), 6% butylbenzyl phthalate (BBP), 2.4% dioctyl sebacate (DOS), 1.6 % epoxidized soybean oil (ESO); in addition to improving material processing performance and reducing material hardness, this composite plasticizer also has anti-aging and anti-oxidation effects;

Thermal stabilizer accounts for 2%, preferably liquid calcium zinc stabilizer (LS), which can improve the stability of polymer materials, resist aging and oxidation, and extend the life of materials.

The specific preparation method of the biological muscle bionic PVC elastomer is as follows:

S1. Pour diisononyl phthalate, butyl benzyl phthalate, dioctyl sebacate, and epoxidized soybean oil into the same container in proportion, stir magnetically for 5 minutes; then stabilize the liquid calcium and zinc Pour in the solution and stir magnetically for 5 minutes;

S2. Pour the mixture prepared in S1 into a container containing PVC paste resin, and stir while pouring. After pouring all the mixture, stir until the resin powder and the modifier are completely fused, and then stop to obtain the mixed base material;

S3. The mixed base material obtained in S2 was stirred at room temperature for 1 h, wherein the slow stirring was 30 min at a stirring speed of 300 rpm, and the fast stirring was 30 min at a stirring speed of 1200 rpm;

S4. Let the mixed base material stirred in S3 stand at room temperature for more than 48 hours. After the internal components have fully reacted and reached saturation, the final base material is obtained, which is the bionic elastic material;

S5. The biomimetic elastic material prepared in S4 and diisononyl phthalate were mixed in a mass ratio of 1:3 and magnetically stirred for 5 minutes;

S6. Place the mixed material stirred in S5 in a vacuum environment and evacuate it under the condition of -0.1MPa until no bubbles are generated in the mixed material;

S7. After cleaning the bionic mold and spraying the stripping agent, heat it to 115°C and then cool it to 100°C;

S8. Pour the mixed material treated by S6 into the bionic mold treated by S7, and heat it until the mixed material reaches 155°C, take it out and let it cool naturally;

S9. Cool and vulcanize the mixed material in the bionic mold treated with S8 for 7-8 hours and then demould to obtain the biological muscle bionic PVC elastomer.

Example 2

This embodiment provides a biofat biomimetic PVC elastomer, the raw material of which is composed of a mixture of PVC paste resin, modifier, and heat stabilizer, and the component mass is calculated as 100%;

Among them, PVC paste resin accounts for 50%, and P440 grade is selected, with a polymerization degree of 1500 and good transparency;

The modifier accounts for 48%, consisting of 39% diisononyl phthalate (DINP), 6% butylbenzyl phthalate (BBP), 2.4% dioctyl sebacate (DOS), 1.6 % epoxidized soybean oil (ESO); in addition to improving material processing performance and reducing material hardness, this composite plasticizer also has anti-aging and anti-oxidation effects;

Thermal stabilizer accounts for 2%, preferably liquid calcium zinc stabilizer (LS), which can improve the stability of polymer materials, resist aging and oxidation, and extend the life of materials.

The specific preparation method of the biological muscle bionic PVC elastomer is as follows:

S1. Pour diisononyl phthalate, butyl benzyl phthalate, dioctyl sebacate, and epoxidized soybean oil into the same container in proportion, stir magnetically for 5 minutes; then stabilize the liquid calcium and zinc Pour in the solution and stir magnetically for 5 minutes;

S2. The mixture prepared in S1 is poured into a container containing PVC paste resin, and stirred while pouring. After all the mixture is poured in, stirring is stopped until the resin powder and the modifier are completely dissolved to obtain a mixed base material;

S3. Electrically stir the mixed base material obtained in S2 for 1 hour at room temperature, including slow stirring for 30 minutes and a stirring speed of 300 rpm, and rapid stirring for 30 minutes and a stirring speed of 1200 rpm;

S4. Let the mixed base material stirred in S3 stand at room temperature for more than 48 hours. After the internal components have fully reacted and reached saturation, the final base material is obtained, which is the bionic elastic material;

S5. Mix the bionic elastic material prepared in S4 and diisononyl phthalate in a mass ratio of 1:2.5, and stir magnetically for 5 minutes;

S6. The mixed material stirred in S5 is placed in a vacuum environment and evacuated at -0.1 MPa until no bubbles are generated in the mixed material;

S7. After cleaning the bionic mold and spraying the stripping agent, heat it to 115°C and then cool it to 100°C;

S8. Pour the mixed material treated by S6 into the bionic mold treated by S7, and heat it until the mixed material reaches 155°C, take it out and let it cool naturally;

S9. Cool and vulcanize the mixed material in the bionic mold treated with S8 for 7-8 hours and then demould to obtain the biofat bionic PVC elastomer.

Example 3

This embodiment provides a biological skin bionic PVC elastomer, the raw materials of which are composed of a mixture of PVC paste resin, a modifier, a heat stabilizer, and a reinforcing body, and the mass of the components is 100%;

Among them, PVC paste resin accounts for 51%, and the P440 grade is selected, with a degree of polymerization of 1500 and good transparency;

The modifier accounts for 46%, consisting of 36% diisononyl phthalate (DINP), 5% butylbenzyl phthalate (BBP), 2.6% dioctyl sebacate (DOS), 2.4 % epoxidized soybean oil (ESO); in addition to improving material processing performance and reducing material hardness, this composite plasticizer also has anti-aging and anti-oxidation effects;

Heat stabilizer accounts for 2%, preferably liquid calcium zinc stabilizer (LS), which can improve the stability of polymer materials, resist aging and oxidation, and extend the life of the material;

The reinforcing body accounts for 1%, of which the reinforcing body is fumed silica (SiO2), which can improve the toughness and tensile strength of the polymer.

The specific preparation method of the biological skin bionic PVC elastomer is as follows:

S1. Pour diisononyl phthalate, butyl benzyl phthalate, dioctyl sebacate and epoxidized soybean oil into the same container in proportion and stir magnetically for 5 minutes; then pour in the liquid calcium zinc stabilizer and add the reinforcing body fumed silica at the same time and stir magnetically for 5 minutes;

S2. Pour the mixture prepared in S1 into a container containing PVC paste resin, and stir while pouring. After pouring all the mixture, stir until the resin powder and the modifier are completely fused, and then stop to obtain the mixed base material;

S3. The mixed base material obtained in S2 was stirred electrically at room temperature for 1 h, wherein slow stirring was performed for 30 min at a stirring speed of 300 rpm, rapid stirring was performed for 30 min at a stirring speed of 1200 rpm;

S4. The mixed base material S3 is allowed to stand at room temperature for more than 48 hours, and the internal components are fully reacted to reach saturation to obtain the final base material, ie, the bionic elastic material;

T5. Place the bionic elastic material prepared by S4 in a vacuum environment and evacuate it under the condition of -0.1MPa until no bubbles are generated in the mixed material;

T6. Pour the mixed material treated with T5 into a thermal bionic mold that has been cleaned and sprayed with a release agent, and heated until the mixed material reaches 164°C. Take it out and cool it naturally to normal temperature before demoulding to obtain bionic skin bionic PVC elasticity. body.

test:

The elastomers obtained in Examples 1-3 were cut using a standard cutter and a corneal ring to obtain the following:

Standard dumbbell-shaped tensile specimen with a length of 100mm, a width of 16mm, and a thickness of 2mm;

Compression specimen of cylindrical block with diameter 29mm and thickness 10mm;

Then conduct quasi-static tension and compression experiments respectively, that is, conduct relevant mechanical property tests, specifically:

Quasi-static tensile test: Take out the dumbbell tensile specimens cut from the elastomers in Examples 1-3 and place them on a flat table. Use a scale to mark the 20mm points on both sides of the center of the specimen. As shown in Figure 1, the length of the two engraved lines of 40mm is the effective tensile length; during specific operation, clamp the sample on the upper and lower chuck ends of the testing machine, and adjust the position of the chuck so that the chuck is just clamped on the engraved mark of the sample. Line position and make the sample in the natural state, set the strain rate to 0.1/s, and the sensor range to 5000N;

Quasi-static compression test: Place the compression specimen cut from the elastomer according to Examples 1-3 between the bottom block and the pressing block of the testing machine, move the specimen so that it is at the corresponding position of the center of the pressing block, and compress at a compression rate of 15 mm/min and a compression amount of 7 mm.

Specifically, Figure 1 is a stress-strain diagram of the tensile characteristics of Example 1 and Example 2. It can be seen from the figure that although the biological muscle bionic PVC elastomer and the biological fat bionic PVC elastomer of the present application are compared with biological tissues, There is a certain gap, but it still has the viscoelastic and superelastic properties of biological tissue. The hardness and texture are also similar to biological tissue. It can describe the tensile properties of biological tissue to a certain extent.

Figures 2 and 3 are stress-strain curve comparison diagrams of Example 1, Example 2 and human biological tissue. It can be seen from the figures that the compression characteristics of the biological muscle bionic PVC elastomer of Example 1 and the biological fat bionic PVC elastomer of Example 2 of the present application are more consistent with biological muscle and fat tissue, and can replace biological soft tissue to carry out relevant compression tests.

Figure 4 is a tensile characteristic force-displacement curve diagram of Example 3. It can be seen from the figure that the tensile strength of the biological skin bionic PVC elastomer of Example 3 can reach the tensile strength of biological skin tissue of 15-30 MPa.

In summary, the bionic elastic material provided by the present application has performance similar to the mechanical properties of biological soft tissue, and the corresponding bionic elastomer can be pointed out through the mold, which is suitable for target soft tissue materials under blunt impact conditions, and its mechanical properties and constitutive properties are similar to those of biological soft tissue to a certain extent; the prepared PVC bionic elastomer has good biomimetic properties. Compared with traditional dummy soft tissue materials, it has higher biomimetic properties, softer texture, and more accurate response to complex external conditions. In addition, it has the advantages of good collision resistance, easy production, and long-term storage.

Obviously, the above-mentioned embodiments are only examples for clear explanation and are not intended to limit the implementation. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. An exhaustive list of all implementations is not necessary or possible. The obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims (10)

1. The bionic elastic material is characterized by comprising raw materials of PVC paste resin, a modifier and a heat stabilizer, wherein the mass ratio of the PVC paste resin to the modifier to the heat stabilizer is 49-52:46-48:2;

the PVC paste resin is of the brand P440 or P450, the heat stabilizer is a liquid calcium zinc stabilizer, and the modifier consists of diisononyl phthalate, butyl benzyl phthalate, dioctyl sebacate and epoxidized soybean oil.

2. The skin bionic elastic material according to claim 1, wherein the raw materials further comprise a reinforcing body, and the mass ratio of the PVC paste resin, the modifier, the heat stabilizer and the reinforcing body is 49-52:46-48:2:1.

3. the bionic elastic material according to claim 1 or 2, wherein the mass ratio of the components in the modifier is:

diisononyl phthalate: butyl benzyl phthalate: dioctyl sebacate: epoxidized soybean oil=39-45:6-7:2.4:1.6.

4. The preparation method of the bionic elastic material is characterized by comprising the following steps of:

s1, pouring diisononyl phthalate, butyl benzyl phthalate, dioctyl sebacate and epoxidized soybean oil into the same container according to a proportion, and magnetically stirring for 5min; pouring the liquid calcium zinc stabilizer into the container, and magnetically stirring the mixture for 5 minutes;

s2, pouring the mixture prepared in the step S1 into a container filled with PVC paste resin, stirring while pouring, and stopping stirring until the resin powder and the modifier are completely fused to obtain a mixed base material;

s3, electrically stirring the mixed base material obtained in the step S2 for 1h at normal temperature, wherein the stirring speed is 300rpm and the stirring speed is 1200rpm, and the stirring speed is 300rpm and the stirring speed is 30min and the stirring speed is 300 rpm;

s4, standing the mixed base material stirred in the S3 for more than 48 hours at normal temperature, and fully reacting the internal components of the mixed base material to be saturated to obtain a final base material, namely the bionic elastic material as defined in claim 1;

wherein, the mass ratio of the PVC paste resin to the modifier to the heat stabilizer is 49-52:46-48:2; the modifier consists of diisononyl phthalate, butyl benzyl phthalate, dioctyl sebacate and epoxidized soybean oil, and the corresponding mass ratio is 39-45:6-7:2.4:1.6.

5. The method for preparing the skin-friendly elastic material as claimed in claim 4, wherein,

in S1, pouring a liquid calcium zinc stabilizer and simultaneously adding a reinforcing body fumed silica, and then carrying out subsequent preparation to obtain a final base material which is the bionic elastic material as claimed in claim 2;

wherein the mass ratio of the PVC paste resin to the modifier to the heat stabilizer to the fumed silica is 49-52:46-48:2:1.

6. the bionic elastic body is characterized by comprising the bionic elastic material and a diluent according to claim 1, wherein the mass ratio of the bionic elastic material to the diluent is 1:2.5-3, wherein the diluent is diisononyl phthalate.

7. A method for preparing a bionic elastomer, which is characterized by comprising the following steps:

s5, based on the claim 4, the bionic elastic material prepared by the S4 and diisononyl phthalate are prepared according to the following ratio of 1:2.5-3, magnetically stirring for 5min;

s6, placing the mixed material stirred in the step S5 in a vacuum environment, and vacuumizing under the condition of-0.1 MPa until no bubbles are generated in the mixed material;

s7, cleaning the bionic mould, spraying the stripping agent, heating to 115 ℃, taking out, and cooling to 100 ℃;

s8, pouring the mixed material treated by the step S6 into a bionic mold treated by the step S7, heating the mixed material to 155 ℃, and taking out and naturally cooling the mixed material;

s9, cooling and vulcanizing the mixed material in the bionic mould treated by the step S8 for 7-8 hours, and then demoulding to obtain the bionic elastomer.

8. Use of a biomimetic elastomer as claimed in claim 6 for the manufacture of a bio-muscle biomimetic PVC elastomer or for the manufacture of a bio-fat biomimetic PVC elastomer.

9. Use of a biomimetic elastic material according to claim 2 for the manufacture of a biomimetic PVC elastomer for biological skin.

10. The use of a bionic elastic material according to claim 9, wherein the method for making a bionic PVC elastomer for biological skin comprises the following steps:

t5 on the basis of claim 5, placing the bionic elastic material prepared in the step S4 in a vacuum environment, and vacuumizing under the condition of-0.1 MPa until no bubbles are generated in the mixed material;

and T6, pouring the mixture subjected to the treatment of T5 into a thermal bionic mold which is cleaned and sprayed with a release agent, heating the mixture to 164 ℃, taking out the mixture, naturally cooling the mixture to normal temperature, and demolding the mixture to obtain the biological skin bionic PVC elastomer.