CN116715936A - Resin-based composite materials, wear-resistant products and preparation methods thereof - Google Patents

Abstract

The application relates to a resin matrix composite material, a wear-resistant product and a preparation method thereof. The resin-based composite material comprises the following components in parts by mass: 100-130 parts of polyether-ether-ketone resin, 10-20 parts of wear-resistant agent, 10-20 parts of reinforcing agent and 0.1-2 parts of stabilizer, wherein the reinforcing agent comprises basalt fiber and glass fiber with the mass ratio of 1 (0.2-10). The resin composite material adopts polyether-ether-ketone resin, an antiwear agent, a reinforcing agent and a stabilizing agent in specific parts by weight, wherein the reinforcing agent comprises basalt fiber and glass fiber in specific mass ratio, and the two materials can play a role of synergistic reinforcement and improve the mechanical property of the resin composite material; the wear-resistant agent with specific mass parts can reduce the friction coefficient of the material and improve the wear resistance of the resin composite material.

Description

Resin-based composite materials, wear-resistant products and preparation methods thereof

Technical field

The present application relates to the field of polymer materials, in particular to a resin-based composite material, wear-resistant products and preparation methods thereof.

Background technique

The steering knuckle, as a hinge for turning the wheels of a car, is one of the most important and reliable parts in the car. In order to reduce wear, the steering knuckle is equipped with a wear-resistant and lubricating bushing. In actual use, commercial vehicles will face high loads and high stresses, which places higher requirements on the wear resistance and load-bearing performance of the bushings. At present, most commercial vehicle bushings use polyacetal resin materials. The current load-bearing capacity of this type of material cannot meet high load conditions. In traditional technology, carbon fiber is often added to resin materials to improve their wear resistance and load-bearing capacity. However, carbon fiber is expensive and not suitable for large-scale production. In addition, carbon fiber has limited improvement in the load-bearing capacity of resin materials, and it is still difficult to meet the bushing performance requirements of commercial vehicles under high load conditions.

Therefore, how to provide a resin-based composite material with better wear resistance and load-bearing capacity has become an urgent technical problem to be solved.

Contents of the invention

Based on this, it is necessary to provide a resin-based composite material with better wear resistance and load-bearing capacity. In addition, this application also provides a wear-resistant product and a preparation method thereof.

The first aspect of this application provides a resin-based composite material, including the following components in parts by mass:

Wherein, the reinforcing agent includes basalt fiber and glass fiber with a mass ratio of 1: (0.2-10).

The above-mentioned resin composite material uses a specific mass ratio of polyether ether ketone resin, wear-resistant agent, reinforcing agent and stabilizer. Among them, the reinforcing agent includes a specific mass ratio of basalt fiber and glass fiber. The above two materials can exert synergy. Strengthening effect to improve the mechanical properties of resin composite materials; a specific mass fraction of wear-resistant agent can reduce the friction coefficient of the material and improve the wear-resistant performance of resin composite materials. Each specific component plays a synergistic effect through a specific mass ratio relationship, so that When resin composite materials are used to prepare automobile steering knuckle bushings, they can effectively reduce the motion friction of the steering knuckle, improve rotation efficiency, and increase load-bearing capacity.

In some embodiments, the resin-based composite material includes the following components in parts by mass:

In some embodiments, the mass ratio of the basalt fiber and the glass fiber is 1: (1-5).

In some embodiments, the particle sizes of the basalt fiber and the glass fiber are each independently selected from 800 mesh to 900 mesh.

In some of these embodiments, the wear-resistant agent includes polytetrafluoroethylene and whisker materials.

In some embodiments, the mass ratio of the polytetrafluoroethylene and the whisker material is (1-10):1.

In some embodiments, the resin-based composite material satisfies at least one of the following (1) and (2):

(1) The whisker material includes at least one of potassium titanate whiskers, silicon carbide whiskers, zinc oxide whiskers, basic magnesium sulfate whiskers and calcium carbonate whiskers;

(2) The stabilizer includes at least one of a copper salt antioxidant and a hydroperoxide decomposing agent.

A second aspect of the present application provides a wear-resistant article including the resin-based composite material of the first aspect.

In some of these embodiments, the wear-resistant article includes a bushing.

The third aspect of this application provides a method for preparing wear-resistant products, including the following steps:

Pretreatment of metal substrates;

The resin-based composite material described in the first aspect is compounded with the pretreated metal substrate to prepare a wear-resistant product.

Detailed ways

In order to facilitate understanding of the present application, the present application will be described more fully below. The application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough understanding of the disclosure of the present application will be provided.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing specific embodiments only and is not intended to limit the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The weights of relevant components mentioned in the description of the embodiments of the present application may not only refer to the specific content of each component, but also represent the proportional relationship of weight between the components. Therefore, as long as the relevant components are combined according to the description of the embodiments of the present application, Any scaling up or down of the content is within the scope disclosed in the examples of this application. Specifically, the weight described in the description of the embodiments of this application may be mass units well known in the chemical industry such as μg, mg, g, kg, etc.

One embodiment of the present application provides a resin-based composite material, including the following components in parts by mass:

Among them, the reinforcing agent includes basalt fiber and glass fiber with a mass ratio of 1: (0.2-10).

Polyetheretherketone resin has a smaller friction coefficient and can improve the wear resistance and lubrication properties of resin-based composite materials. Alternatively, the mass parts of polyether ether ketone can be 100 parts, 105 parts, 110 parts, 115 parts, 120 parts, 125 parts or 130 parts, etc. The mass parts of polyether ether ketone can also be between 100 parts and 130 parts. Make other suitable choices within the range of 130 copies.

Wear-resistant agents can further enhance the friction-reducing and wear-resistant properties of resin-based composites. Alternatively, the mass parts of the wear-resistant agent can be 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts or 20 parts, etc., the wear-resistant agent The mass parts can also be selected in the range of 10 to 20 parts.

Alternatively, the mass parts of the enhancer can be 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts or 20 parts, etc., the mass of the enhancer The number of servings can also be appropriately selected within the range of 10 to 20 servings.

Further, the reinforcing agent includes basalt fiber and glass fiber with a mass ratio of 1: (0.2-10). Glass fiber has high mechanical strength but poor wear resistance, while basalt fiber has good wear resistance and high strength. Therefore, the combination of two fiber materials can not only bring into play their respective advantages, but also create a synergistic effect between the two to further optimize the performance of resin-based composite materials. Optionally, the mass ratio of basalt fiber powder and glass fiber powder is 1:0.2, 1:0.5, 1:1, 1:2, 1:3, 1:4, 1:5, 1:6, 1:7 , 1:8, 1:9 or 1:10, etc. The mass ratio of the two fiber materials can also be selected within the range of 1: (0.2~10).

Alternatively, the mass parts of the stabilizer may be 0.1 part, 0.2 part, 0.5 part, 1 part, 1.5 part or 2 parts, etc. The mass parts of the stabilizer may also be in the range of 0.1 to 2 parts. Suitable choice.

The above-mentioned resin composite material uses a specific mass ratio of polyether ether ketone resin, wear-resistant agent, reinforcing agent and stabilizer. Among them, the reinforcing agent includes a specific mass ratio of basalt fiber and glass fiber. The above two materials can exert synergy. Strengthening effect to improve the mechanical properties of resin composite materials; a specific mass fraction of wear-resistant agent can reduce the friction coefficient of the material and improve the wear-resistant performance of resin composite materials. Each specific component plays a synergistic effect through a specific mass ratio relationship, so that When resin composite materials are used to prepare automobile steering knuckle bushings, they can effectively reduce the motion friction of the steering knuckle, improve rotation efficiency, and increase load-bearing capacity.

In some embodiments, in terms of parts by mass, the resin-based composite material consists of 100 to 130 parts of polyether ether ketone resin, 10 to 20 parts of wear-resistant agent, 10 to 20 parts of reinforcing agent and 0.1 It consists of basalt fiber and glass fiber with a mass ratio of 1: (0.2-10).

In some of the embodiments, the resin-based composite material includes the following components in parts by mass:

When the content of each component in the resin-based composite material is within the above range, its anti-wear and friction-reducing performance and load-bearing capacity can be further improved.

In some of the embodiments, the resin-based composite material includes the following components in parts by mass:

In some of the embodiments, the resin-based composite material includes the following components in parts by mass:

In some embodiments, the mass ratio of basalt fiber and glass fiber is 1: (1-5). When the mass ratio of the two fiber materials is within the above range, the synergy can be fully exerted to further improve the strength performance and load-bearing capacity of the resin-based composite material. Optionally, the mass ratio of basalt fiber and glass fiber is 1:1, 1:1.5, 1:2.5, 1:3.5, 1:4.5 or 1:5, etc. The mass ratio of the two fiber materials can also be 1: Make other appropriate choices within the range of (1 to 5).

In some embodiments, the above-mentioned basalt fibers and glass fibers are in the form of powder.

In some embodiments, the particle sizes of the basalt fiber and the glass fiber are each independently selected from 800 mesh to 900 mesh. Understandably, when the particle size of the fiber is too large, the gaps between the fiber particles are relatively large, which will reduce the reinforcing effect; when the particle size of the fiber is too small, the fiber particles are prone to agglomeration, which will also affect the reinforcing effect. Optionally, the particle sizes of the basalt fiber and the glass fiber are each independently selected from 800 mesh, 810 mesh, 820 mesh, 830 mesh, 840 mesh, 850 mesh, 860 mesh, 870 mesh, 880 mesh, 890 mesh or 900 mesh, etc. . The particle size of basalt fiber and glass fiber can also be appropriately selected in the range of 800 mesh to 900 mesh.

In some of these embodiments, the wear-resistant agent includes polytetrafluoroethylene and whisker materials. Understandably, whisker materials can enhance the wear resistance of polytetrafluoroethylene, but the dispersion effect of whisker materials alone is not good. The use of wear-resistant agents compounded of polytetrafluoroethylene and whisker materials can not only improve the dispersion of the whisker materials, but also exert a synergistic effect between the two to enhance the wear resistance of resin-based composite materials.

In some embodiments, the mass ratio of polytetrafluoroethylene and whisker material is (1-10):1. When the mass ratio of the two wear-resistant components is within the above range, the synergistic effect can be more fully exerted and the wear-resistant performance of the resin-based composite material can be further improved. Optionally, the mass ratio of polytetrafluoroethylene and whisker material is 1:1, 2:1, 3:1, 4:1, 5:1, 6:1, 7:1, 8:1, 9: 1 or 10:1, etc. The mass ratio of the two wear-resistant components can also be selected in the range of (1 ~ 10):1.

In some embodiments, the whisker material includes at least one of potassium titanate whiskers, silicon carbide whiskers, zinc oxide whiskers, basic magnesium sulfate whiskers, and calcium carbonate whiskers.

In some embodiments, the particle size of polytetrafluoroethylene is 15 μm to 35 μm.

In some embodiments, the diameter of the whiskers ranges from 200 nm to 800 nm, and the length ranges from 8 μm to 15 μm.

In some embodiments, the stabilizer includes at least one of a copper salt antioxidant and a hydroperoxide decomposer. Specifically, the copper salt antioxidant includes at least one of organic copper salt, copper thiophosphate salt, copper thiocarbamate salt and copper sulfide borate salt, and the hydroperoxide decomposing agent includes thiodipropionate and at least one of phosphites.

Further, this application also provides a method for preparing the above-mentioned resin-based composite material, including the following steps:

Mix polyetheretherketone, wear-resistant agent, reinforcing agent and stabilizer according to parts by mass to prepare resin-based composite materials.

In some embodiments, ball milling is used to mix polyetheretherketone, wear-resistant agent, reinforcing agent and stabilizer. The ball-to-material ratio is (1~5):1, the rotational speed is 220r/min~300r/min, and the ball milling time is 2h~6h.

Another embodiment of the present application provides a wear-resistant article including the above-mentioned resin-based composite material.

In some of these embodiments, the wear-resistant article includes a bushing. The bushing can be used in, but is not limited to, the automotive field. For example, the bushing can be applied to steering knuckles of commercial vehicle wheels. The bushing can effectively reduce the motion friction of the steering knuckle, improve rotation efficiency, and increase load-bearing capacity.

Furthermore, this application also provides a method for preparing the above-mentioned wear-resistant product, including the following steps S100 to S200.

S100, pretreat the metal substrate;

S200. Composite the above-mentioned resin-based composite material and the pre-treated metal substrate to prepare a wear-resistant product.

The above preparation method has a simple process and can be applied to large-scale industrial production.

In some embodiments, in step S100, the pretreatment includes sintering a copper layer on the surface of the metal substrate.

Understandably, the copper layer formed by sintering can serve as a transition layer to connect the metal substrate and the resin-based composite material.

Optionally, the sintering temperature in step S100 is 870°C to 930°C, and the sintering time is 30min to 60min.

In some embodiments, in step S200, the resin-based composite material is placed on the surface of the copper layer of the pretreated metal substrate to composite the resin-based composite material with the metal substrate.

In some embodiments, sintering is used to combine the resin-based composite material with the surface of the copper layer of the metal substrate to form a resin layer on the surface of the metal substrate to obtain a plate. Optionally, the sintering temperature in step S200 is 320°C to 360°C, and the sintering time is 10min to 30min.

In some embodiments, after the above-mentioned resin-based composite material is combined with the pre-treated metal substrate to obtain a plate, the step of cutting and winding the plate is also included. After the cutting and winding treatment, a pre-processed plate can be obtained. Wear-resistant products of various sizes and shapes.

The following are specific examples.

The experimental materials used in the examples and comparative examples of this application include:

Polyetheretherketone (PEEK): PEEK-450G powder, particle size 12μm, Dongguan Chuanao Engineering Plastics Raw Materials Co., Ltd.

Polytetrafluoroethylene (PTFE): particle size 15μm~35μm, Suzhou Yuchenlong Engineering Plastics Co., Ltd.

Silicon carbide whiskers: diameter 500nm, length 12μm.

Basalt fiber: particle size is 800 mesh to 900 mesh.

Glass fiber: particle size is 800 mesh to 900 mesh.

Organic copper salt heat stabilizer: model KL-36, Guangzhou Yongjiu Fine Chemical Co., Ltd.

Example 1

(1) Resin-based composite materials

In terms of parts by mass, the resin matrix composite material consists of the following components:

Among them, the wear-resistant agent includes 9 parts of PTFE and 1 part of silicon carbide whiskers. Reinforcement agents include 5 parts basalt fiber and 10 parts glass fiber.

Put the above-mentioned components in parts by mass into a planetary ball mill, mix and grind, to obtain a resin-based composite material. Among them, the ball-to-material ratio is 2:1, the speed is 260r/min, and it takes 6 hours.

(2) Preparation of wear-resistant products

The first sintering treatment was performed on the surface of the steel plate to prepare a sintered copper layer. The sintering temperature was 890°C and the time was 45 minutes. Then, the resin-based composite material of step (1) was placed on the surface of the sintered copper layer, and a second sintering process was performed. The sintering temperature was 350°C and the time was 10 minutes to obtain a plate. After cooling, the plate is cut according to the preset size of the product, and then rolled into a bushing by a rounding machine.

Example 2

The preparation method of Example 2 is basically the same as that of Example 1, except that the composition of the resin-based composite material in step (1) is as follows:

Among them, the wear-resistant agent includes 13.5 parts of PTFE and 1.5 parts of silicon carbide whiskers. Reinforcement agents include 10 parts basalt fiber and 5 parts glass fiber.

Example 3

The preparation method of Example 3 is basically the same as that of Example 1, except that the composition of the resin-based composite material in step (1) is as follows:

Among them, the wear-resistant agent includes 9 parts of PTFE and 1 part of silicon carbide whiskers. Reinforcement agents include 15 parts basalt fiber and 5 parts glass fiber.

Example 4

The preparation method of Example 4 is basically the same as that of Example 1, except that the composition of the resin-based composite material in step (1) is as follows:

Among them, the wear-resistant agent includes 9 parts of PTFE and 1 part of silicon carbide whiskers. Reinforcement agents include 10 parts basalt fiber and 5 parts glass fiber.

Example 5

The composition of the resin-based composite material of Example 5 is the same as that of Example 2, except that the preparation conditions of step (1) resin-based composite material and step (2) wear-resistant products are as follows:

Put the above-mentioned components in parts by mass into a planetary ball mill, mix and grind, to obtain a resin-based composite material. Among them, the ball-to-material ratio is 2:1, the speed is 360r/min, and it takes 6 hours.

The first sintering treatment was performed on the surface of the steel plate to prepare a sintered copper layer. The sintering temperature was 890°C and the time was 1 hour. Then the resin-based composite material was placed on the surface of the sintered copper layer, and a second sintering process was performed. The sintering temperature was 350°C and the time was 20 minutes to obtain a plate. After cooling, the plate is cut according to the preset size of the product, and then rolled into a bushing by a rounding machine.

Example 6

The preparation method of Example 6 is basically the same as that of Example 1, except that the composition of the resin-based composite material in step (1) is as follows:

Among them, the wear-resistant agent includes 9 parts of PTFE and 1 part of silicon carbide whiskers. Reinforcement agents include 2 parts basalt fiber and 10 parts glass fiber.

Example 7

The preparation method of Example 7 is basically the same as that of Example 1, except that the composition of the resin-based composite material in step (1) is as follows:

Among them, the wear-resistant agent includes 9 parts of PTFE and 1 part of silicon carbide whiskers. Reinforcement agents include 2 parts basalt fiber and 14 parts glass fiber.

Example 8

The preparation method of Example 8 is basically the same as that of Example 1, except that the composition of the resin-based composite material in step (1) is as follows:

Among them, the wear-resistant agent includes 9 parts of PTFE and 1 part of silicon carbide whiskers. Reinforcement agents include 1.5 parts basalt fiber and 15 parts glass fiber.

Example 9

The preparation method of Example 9 is basically the same as that of Example 1, except that the composition of the resin-based composite material in step (1) is as follows:

Among them, the wear-resistant agent includes 9 parts of PTFE and 1 part of silicon carbide whiskers. Reinforcement agents include 1.5 parts basalt fiber and 15 parts glass fiber.

Comparative example 1

The preparation method of Comparative Example 1 is basically the same as that of Example 1, except that the composition of the resin-based composite material in step (1) is as follows:

Among them, the wear-resistant agent is 9 parts of PTFE and 1 part of silicon carbide whiskers. Reinforcement includes 15 parts basalt fiber.

Comparative example 2

The preparation method of Comparative Example 2 is basically the same as that of Example 1, except that the composition of the resin-based composite material in step (1) is as follows:

Among them, the wear-resistant agent is 9 parts of PTFE and 1 part of silicon carbide whiskers. Reinforcement includes 15 parts glass fiber.

Comparative example 3

The preparation method of Comparative Example 3 is basically the same as that of Example 1, except that the composition of the resin-based composite material in step (1) is as follows:

Among them, the wear-resistant agent is 9 parts of PTFE and 1 part of silicon carbide whiskers. Reinforcement agents include 1 part basalt fiber powder and 15 parts glass fiber.

Comparative example 4

The preparation method of Comparative Example 4 is basically the same as that of Example 1, except that the composition of the resin-based composite material in step (1) is as follows:

Among them, the wear-resistant agent is 9 parts of PTFE and 1 part of silicon carbide whiskers. Reinforcement agents include 9 parts of basalt fiber powder and 18 parts of glass fiber.

The composition of the resin-based composite materials in the preparation methods of Examples 1 to 9 and Comparative Examples 1 to 4 is as follows in Table 1. Among them, the contents of each component in Table 1 are parts by mass, and the mass ratio in Table 1 is the mass ratio of basalt fiber and glass fiber.

Table 1

Performance tests were performed on the bushings prepared in Examples 1 to 9 and Comparative Examples 1 to 4, and the test results are shown in Table 2 below. Among them, the friction coefficient is tested by the method specified in the national standard GB/T 3960-1983 Plastic sliding friction and wear test method. The ultimate PV value is tested according to the method specified in the national standard GB/T 7948-1987 Plastic bearing ultimate PV test method. Load-carrying capacity is verified through developmental bench testing. .

Table 2

It can be seen from Table 2 above that the bushings of Examples 1 to 9 have lower friction coefficients, higher limit PV values and load-bearing capacities, which illustrates that this application adopts a specific mass proportion of polyether ether ketone resin, resistant Grinding agent, reinforcing agent and stabilizer, and the reinforcing agent includes basalt fiber and glass fiber in a specific mass ratio, which can improve the wear resistance and mechanical properties of the bushing. The reinforcing agent in Comparative Example 1 does not contain glass fiber, the reinforcing agent in Comparative Example 2 does not contain basalt fiber, the mass ratio of glass fiber and basalt fiber in Comparative Example 3 is not within the scope of this application, and the reinforcing agent content in Comparative Example 4 is not within the scope of this application. Within the scope of the application, the wear resistance and load-bearing capacity of the above comparative bushings are reduced.

The technical features of the above-described embodiments can be combined in any way. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, All should be considered to be within the scope of this manual.

The above-described embodiments only express several implementation modes of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all fall within the protection scope of the present application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims (10)

1. The resin-based composite material is characterized by comprising the following components in parts by weight:

wherein the reinforcing agent comprises basalt fiber and glass fiber with the mass ratio of 1 (0.2-10).

2. The resin-based composite material according to claim 1, wherein the resin-based composite material comprises the following components in parts by mass:

3. resin-based composite material according to claim 1 or 2, characterized in that the mass ratio of basalt fibers to glass fibers is 1 (1-5).

4. A resin-based composite material according to claim 1 or 2, wherein the basalt fiber and the glass fiber each have a particle size independently selected from 800 mesh to 900 mesh.

5. A resin-based composite material as claimed in claim 1 or claim 2, wherein the antiwear agent comprises polytetrafluoroethylene and whisker material.

6. The resin-based composite material according to claim 5, wherein the mass ratio of the polytetrafluoroethylene to the whisker material is (1-10): 1.

7. The resin-based composite material according to claim 5, wherein the resin-based composite material satisfies at least one of the following (1) and (2):

(1) The whisker material comprises at least one of potassium titanate whisker, silicon carbide whisker, zinc oxide whisker, basic magnesium sulfate whisker and calcium carbonate whisker;

(2) The stabilizer comprises at least one of a copper salt antioxidant and a hydroperoxide decomposer.

8. A wear resistant article comprising the resin-based composite material of any one of claims 1 to 7.

9. A wear resistant article in accordance with claim 8 in which the wear resistant article comprises a bushing.

10. A method of making a wear resistant article comprising the steps of:

pretreating a metal substrate;

compounding the resin-based composite material according to any one of claims 1 to 7 with a pretreated metal substrate to prepare a wear-resistant product.