CN117697649A - A production method for fiber polishing wheel waste molding and reuse - Google Patents

Abstract

The invention discloses a method for molding, recycling and producing waste materials of a fiber polishing wheel, which is characterized by comprising the following steps of: the method comprises the following steps: crushing the waste material to form irregular block materials with the size not more than 1cm multiplied by 1 cm; step two, preparing an adhesive solution, and reducing viscosity by means of adding a diluent into single-component or multi-component glue so that the adhesive solution is easy to flow and wet the surface and the interior of waste materials; step three, mixing and dipping the waste materials and the adhesive solution in proportion, fully stirring and centrifuging the mixture to remove the redundant adhesive solution; step four, weighing the immersed waste blocks, uniformly placing the waste blocks in a circular mold with a specific diameter, and forming the waste blocks into a disc-shaped grinding tool with a specific diameter, a specific thickness and a specific density by over-pressurizing; and fifthly, after demoulding, placing the obtained disc-shaped grinding tool in an oven to bake for a certain time, and cooling to obtain a finished product.

Description

A production method for fiber polishing wheel waste molding and reuse

Technical field

The invention belongs to the field of fiber polishing wheel, or nylon polishing wheel, non-woven polishing wheel preparation field, belongs to grinding tools, and relates to the waste processing technology formed in the process of making products in this field.

Background technique

The fiber polishing wheel is round. It is installed in a polishing machine and rotates at high speed to be used for polishing and drawing metal and non-metal surfaces. It is widely used because of the beautiful texture of the polished workpiece, bright surface, and does not change the size of the workpiece. Market demand With prices rising, more and more companies are engaged in the production of this product. However, when producing this product, it is necessary to obtain a round product from a rectangular raw material block, so waste is formed. The composition of the waste is consistent with that of the finished product. Since each component has been fully mixed with the glue during the product production process, and the glue has solidified to form a three-dimensional network polymer structure, the raw materials cannot be recycled through dissolution. Currently, it can only be landfilled as industrial waste. and incineration, and incurs processing costs, further pushing up manufacturing costs.

The raw material cost of the fiber polishing wheel is relatively high, so the economic value of the waste material is relatively large. Since the composition of the waste material is consistent with that of the finished product, the present invention uses the waste material as the raw material, and re-bonds the waste material into a disc shape with a certain strength and resiliency through adhesive. Used in polishing abrasive tools to achieve the purpose of reusing waste materials. That is to say, the reduction of waste materials or even no waste production is achieved, thereby saving the cost of waste treatment, and new value is created by selling the product.

Contents of the invention

In order to solve the above problems, the technical problem to be solved by the present invention is to provide a method for manufacturing a glass fiber reinforced nylon polishing wheel.

The present invention is realized through the following technical solutions:

Step 1: crush the waste material, and crush the fiber polishing wheel waste material into irregular block materials with a size of no more than 1cm×1cm×1cm for later use;

Step 2: Preparing the adhesive solution, reducing the viscosity by adding single-component or multi-component glue and diluent to make it easy to flow and wet the surface and interior of the waste material;

Step 3: Mix the crushed waste produced in Step 1 with the adhesive solution in Step 2, stir to impregnate it, and then centrifuge to remove excess adhesive solution;

Step 4: Weigh the impregnated waste blocks and evenly place them in a circular mold with a specific diameter, and pressurize them to form a disc-shaped abrasive tool with a specific diameter, specific thickness, and specific density;

Step 5: After demoulding, place the obtained disc-shaped grinding tool in an oven at 80 to 150°C and bake for 30 to 90 minutes. After cooling, the finished product is obtained.

Further, the invention describes a fiber polishing wheel waste molding and reuse production method, which is characterized in that: the step 1) crushing equipment includes a tearing machine, a crusher and other machines used to crush large pieces of material.

Further, the fiber polishing wheel waste molding and reuse production method according to the present invention is characterized in that: the glue in step 2) includes, epoxy resin-low molecular polyamide, epoxy resin-polyetheramine, cyclic Oxygen resin-T31, one or more of polyurethane resin or blocked polyurethane resin, the diluent includes methanol, ethanol, toluene, xylene, diethyl ether, ethyl acetate, acetone, methyl ethyl ketone, methylal, One or more mixtures of cyclohexanone.

Further, a fiber polishing wheel waste molding and reuse production method according to the present invention is characterized in that the glue preparation method in step 2) is as follows, in terms of weight ratio, A component: 100 parts of PMD I, B component : 200 parts of hydroxyl-terminated polyether, 100 parts of silica powder, 50 parts of cooked powder, 100 parts of silicon carbide powder, 1 part of organic tin, 100 parts of castor oil, and 10 parts of plasticizer, mix thoroughly. When using, mix component A and component B thoroughly and use up within 1 hour.

Further, a fiber polishing wheel waste molding and reuse production method according to the present invention is characterized in that the glue preparation method in step 2) is as follows, in terms of weight ratio, component A: 100 parts of urea-formaldehyde resin, component B : 1 to 2 parts of ammonium chloride, 100 parts of silica powder, 50 parts of cooked powder, 100 parts of silicon carbide powder, 1 part of organic tin, 100 parts of castor oil, and 10 parts of plasticizer, stir thoroughly. When using, mix component A and component B thoroughly and use up within 1 hour.

Furthermore, the production method of fiber polishing wheel waste molding and reuse according to the present invention is characterized in that the glue preparation method in step 2) is as follows, in terms of weight ratio, component A: 100 parts of PMDI, component B: 100 parts of water glass and 10 parts of plasticizer, mix thoroughly. When using, mix Part A and Part B thoroughly and use up within 10 minutes.

Further, a fiber polishing wheel waste molding and reuse production method according to the present invention is characterized in that: in step 2), epoxy resin-low molecular polyamide, epoxy resin-polyetheramine, epoxy The solution concentration range of resin-T31, one or more mixed adhesives in polyurethane resin or blocked polyurethane resin is 5%-50%.

Furthermore, the fiber polishing wheel waste molding and reuse production method according to the present invention is characterized in that: in step 3), the mass ratio of the waste material to the adhesive solution is between 1:0.5 and 1:3. .

Further, the fiber polishing wheel waste molding and reuse production method described in the present invention is characterized in that: in step 4), the diameter of the circular mold is between 50mm-400mm, and the center hole size is Between 0mm-100mm, molding thickness between 10mm-100mm.

Principle and concept of the invention: This invention crushes and cuts the corner waste generated during the fiber polishing wheel production process into small pieces, and re-bonds the waste with appropriate adhesive and molds it into a round fiber polishing wheel. Therefore, the technical problems actually to be solved by the present invention are: first, how to reuse fiber polishing wheel waste, improve raw material utilization, reduce production costs, and reduce environmental pollution; second, how to ensure the safety of polishing wheels made from fiber polishing wheel waste And the polishing performance meets the requirements, especially when rotating at high temperature and high speed, to ensure that the polishing wheel will not be broken. The key material used in the present invention is adhesive. The bonding quality of the adhesive directly affects the performance of the polishing wheel. In the present invention, epoxy resin-low molecular polyamide, epoxy resin-polyetheramine, and epoxy resin are selected. Resin-T31 is used as an adhesive, combined with one or more mixtures of methanol, ethanol, toluene, xylene, ether, ethyl acetate, acetone, methyl ethyl ketone, methylal, and cyclohexanone as a diluent. Improve the bonding properties of epoxy resin. Use polyurethane series adhesive, component A: 100 parts of PMD I, component B: 200 parts of hydroxyl-terminated polyether, 100 parts of silica powder, 50 parts of cooked powder, 100 parts of silicon carbide powder, 1 organotin 100 parts of castor oil and 10 parts of plasticizer make use of the adhesive force of polyurethane. PMD I is odorless at room temperature and has high activity. Due to the large number of benzene rings in the molecular structure, the hardness after curing is high and brittle, so The toughness of hydroxyl-terminated polyether and castor oil are added as flexible segments to improve the toughness of the product. The addition of silica powder, cooked powder, and silicon carbide powder not only reduces the product cost, but also makes use of these inorganic powders. The polishing property of the material increases the service life of the polishing wheel. Organotin is a catalyst and the plasticizer reduces the viscosity of the product and improves the toughness of the product. The polyurethane water glass series adhesive is selected. Component A: PMD I, Component B: water glass, taking advantage of the properties of PMD I and water glass that can react and cure. On the one hand, PMD I can bond the polishing wheel waste when cured. , On the other hand, after solidification, water glass forms a -Si-O- stone-like structure with high strength, which can effectively increase the service life of the polishing wheel. The plasticizer reduces the viscosity of the product and improves the toughness of the product.

The beneficial effects of the present invention are:

Low production cost. The main raw material of the product of the present invention is waste fiber polishing wheels, which not only greatly reduces the cost of raw materials but also reduces environmental pollution and effectively reduces carbon emissions;

Safer to use. It has been verified by experiments that the polishing wheel made by the method of the present invention does not break at a linear speed of 80 meters/second, which reduces the risk of the product breaking and injuring people when running at high speed;

The polishing effect is good. The polishing effect of the polishing wheel made by the method of the present invention is basically the same as that of the polishing wheel made of new materials;

Description of the drawings

Figure 1 is a process flow diagram of the present invention.

Detailed ways

The preferred embodiments of the present invention are described in detail below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be more clearly defined.

Embodiment 1

A method for manufacturing a glass fiber reinforced nylon polishing wheel. The preparation method is carried out as follows: a production method for fiber polishing wheel waste molding and reuse, which is characterized in that: the method includes the following steps:

Step 1: crush the waste material. Use a crusher to crush the fiber polishing wheel waste material into irregular block materials with a size of 1cm×1cm×1cm for later use;

Step 2: Prepare the adhesive solution by mixing 5kg of monoepoxy resin-low molecular polyamide with 95kg of xylene diluent;

Step 3: Mix the crushed waste produced in Step 1 with the adhesive solution in Step 2, stir to impregnate it, and then centrifuge to remove excess adhesive solution, so that the mass ratio of polishing wheel waste to adhesive solution is 1:0.5;

Step 4: Weigh the impregnated waste blocks and place them evenly in a circular mold with a diameter of 50mm, and pressurize them to form a disc-shaped abrasive tool with a diameter of 50mm, a thickness of 10mm, and a density of 0.5g/ ^cm3 ;

Step 5: After demoulding, place the obtained disc-shaped grinding tool in an oven at 80°C and bake for 90 minutes. After cooling, the finished product is obtained.

Embodiment 2

A method for manufacturing a glass fiber reinforced nylon polishing wheel. The preparation method proceeds as follows: a production method for fiber polishing wheel waste molding and reuse, which is characterized in that: the method includes the following steps:

Step 1: crush the waste material. Use a crusher to crush the fiber polishing wheel waste material into irregular block materials with a size of 0.5cm×0.5cm×0.5cm for later use;

Step 2: Preparation of adhesive solution, component A: 100kg PMD I, component B: 200kg hydroxyl-terminated polyether, 100kg silica powder, 50kg cooked powder, 100kg silicon carbide powder, 1kg organic tin, 100kg castor oil , 10kg of plasticizer, stir thoroughly and evenly. When using, fully mix component A and component B;

Step 3: Within 1 hour, mix the crushed waste produced in Step 1 with the adhesive solution in Step 2, stir to impregnate it, and then centrifuge to remove excess adhesive solution, so that the polishing wheel waste and adhesive solution The mass ratio is 1:2;

Step 4: Weigh the impregnated waste blocks and place them evenly in a circular mold with a diameter of 200mm, and pressurize them to form a disc-shaped abrasive tool with a diameter of 200mm, a thickness of 50mm, and a density of 0.4g/ ^cm3 ;

Step 5: After demoulding, place the obtained disc-shaped grinding tool in an oven at 100°C and bake for 90 minutes. After cooling, the finished product is obtained.

Embodiment 3

A method for manufacturing a glass fiber reinforced nylon polishing wheel. The preparation method is carried out as follows: a production method for fiber polishing wheel waste molding and reuse, which is characterized in that: the method includes the following steps:

Step 1, crush the waste material, use a crusher to crush the fiber polishing wheel waste into irregular block materials with a size of 0.8cm×0.8cm×0.8cm for later use;

Step 2: Preparation of adhesive solution, component A: 100kg urea-formaldehyde resin, component B: 1kg ammonium chloride, 100kg silica powder, 50kg cooked powder, 100kg silicon carbide powder, 1kg organic tin, 100kg castor oil, 10kg of DOP plasticizer. When using, mix component A and component B thoroughly;

Step 3: Within 1 hour, mix the crushed waste produced in Step 1 with the adhesive solution in Step 2, stir to impregnate it, and then centrifuge to remove excess adhesive solution, so that the polishing wheel waste and adhesive solution The mass ratio is 1:3;

Step 4: Weigh the impregnated waste blocks and place them evenly in a circular mold with a diameter of 400mm, and pressurize them to form a disc-shaped abrasive tool with a diameter of 400mm, a thickness of 100mm, and a density of 0.5g/ ^cm3 ;

Step 5: After demoulding, place the obtained disc-shaped grinding tool in an oven at 150°C and bake for 60 minutes. After cooling, the finished product is obtained.

Embodiment 4

A method for manufacturing a glass fiber reinforced nylon polishing wheel. The preparation method is carried out as follows: a production method for fiber polishing wheel waste molding and reuse, which is characterized in that: the method includes the following steps:

Step 1: crush the waste material. Use a crusher to crush the fiber polishing wheel waste material into irregular block materials with a size of 0.5cm×0.5cm×0.5cm for later use;

Step 2: Prepare the adhesive solution. Component A: 100kg of PMD I. Component B: 100kg of water glass and 10 parts of DOP plasticizer. Stir thoroughly. When in use, fully mix component A and component B; in use, fully mix component A and component B;

Step three: within 10 minutes, mix the crushed waste produced in step one with the adhesive solution in step two, stir to soak it, and then centrifuge to remove excess adhesive solution, so that the polishing wheel waste and adhesive solution The mass ratio is 1:3;

Step 4: Weigh the impregnated waste blocks and place them evenly in a circular mold with a diameter of 400mm, and pressurize them to form a disc-shaped abrasive tool with a diameter of 400mm, a thickness of 100mm, and a density of 0.6g/ ^cm3 ;

Step 5: After demoulding, place the obtained disc-shaped grinding tool in an oven at 150°C and bake for 60 minutes. After cooling, the finished product is obtained.

The various performance tests and methods of the product of the present invention are shown in Table 1:

Table 1: Comparison of performance between invented products and completely new material polishing wheel products

The comparison example is an ordinary non-woven fiber polishing wheel made of new materials. The main components are nylon non-woven fabric, abrasives and binders. It is obvious that the embodiment of the present invention is made of basically cost-free waste materials, and the cost is significantly lower than that of the comparative example. The test method for the maximum working linear speed is to make the polishing wheel of the embodiment and the comparative example to a size of 200 mm, and the center hole size is 50mm, the thickness is 80mm, and the polishing wheel is placed in a high-speed rotating machine, and the rotation speed is gradually increased. The highest linear speed when the polishing wheel does not break is the highest working linear speed. From the results, the highest linear speed of the embodiment is close to Or the same as the comparative example.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that are not thought of through creative efforts should be covered by the protection scope of the present invention.

Claims (9)

1. The invention discloses a method for molding, recycling and producing waste materials of a fiber polishing wheel, which is characterized by comprising the following steps of: the method comprises the following steps:

crushing the waste material, namely crushing the waste material of the fiber polishing wheel into irregular block materials with the size not more than 1cm multiplied by 1cm for standby;

step two, preparing an adhesive solution, and reducing viscosity by means of adding a diluent into single-component or multi-component glue so that the adhesive solution is easy to flow and wet the surface and the interior of waste materials;

step three, mixing the crushed waste material prepared in the step one with the adhesive solution prepared in the step two, stirring to impregnate the crushed waste material, and centrifuging the mixture to remove the redundant adhesive solution;

step four, weighing the immersed waste blocks, uniformly placing the waste blocks in a circular mold with a specific diameter, and pressurizing to form a disc-shaped grinding tool with the specific diameter, the specific thickness and the specific density;

and fifthly, after demoulding, placing the obtained disc-shaped grinding tool in an oven to bake for a certain time, and cooling to obtain a finished product.

2. The method for molding and recycling waste fiber polishing wheel according to claim 1, wherein: the step 1) crushing equipment comprises a tearing machine, a crusher and other machines for crushing massive materials.

3. The method for molding and recycling waste fiber polishing wheel according to claim 1, wherein: the glue in the step 2) comprises one or more of epoxy resin-low molecular polyamide, epoxy resin-polyether amine, epoxy resin-T31, polyurethane resin or end-capped polyurethane resin, and the diluent comprises one or more mixed liquid of methanol, ethanol, toluene, xylene, diethyl ether, ethyl acetate, acetone, butanone, methylal and cyclohexanone.

4. The method for producing the fiber polishing wheel waste material for molding and recycling according to claim 1, wherein the glue in the step 2) is prepared by the following steps: PMDI 100 parts, B component: 200 parts of hydroxyl-terminated polyether, 100 parts of silicon dioxide powder, 50 parts of cooked powder, 100 parts of silicon carbide powder, 1 part of organic tin, 100 parts of castor oil and 10 parts of plasticizer, and stirring fully and uniformly. In use, the A and B components are thoroughly mixed and used up within 1 hour.

5. The method for producing the fiber polishing wheel waste material for molding and recycling according to claim 1, wherein the glue in the step 2) is prepared by the following steps: 100 parts of urea-formaldehyde resin, and a component B: 1-2 parts of ammonium chloride, 100 parts of silicon dioxide powder, 50 parts of cooked powder, 100 parts of silicon carbide powder, 1 part of organic tin, 100 parts of castor oil and 10 parts of plasticizer, and fully and uniformly stirring. In use, the A and B components are thoroughly mixed and used up within 1 hour.

6. The method for producing the fiber polishing wheel waste material for molding and recycling according to claim 1, wherein the glue in the step 2) is prepared by the following steps: PMDI 100 parts, B component: 100 parts of water glass and 10 parts of plasticizer, and stirring the materials fully and uniformly. In use, the A and B components are thoroughly mixed and used up within 10 minutes.

7. A method for producing fibrous buff waste shaped reuse according to claim 3, wherein: the concentration range of the adhesive solution in the step 2) is 5% -50%.

8. The method for molding and recycling waste fiber polishing wheel according to claim 1, wherein: the mass ratio of the waste material to the adhesive solution in the step 3) is between 1:0.5 and 1:3.

9. A method of producing a fibrous buff waste molded reuse according to claim 1, wherein said: the diameter size of the circular mould in the step 4) is between 50mm and 400mm, the size of the central hole is between 0mm and 100mm, and the forming thickness is between 10mm and 100 mm.