A tensile white polishing leather for crystal polishing and a production process thereof

Abstract

The application discloses a kind of tensile white polishing leather for crystal polishing and its production process, belong to polishing leather technical field.A kind of tensile white polishing leather for crystal polishing of the application, including polishing layer, tensile layer and substrate layer, the polishing layer, tensile layer and substrate layer are sequentially composite connection from top to bottom.The application solves the problem that oxide in existing coated nano aggregate particle reacts with oxygen to form the hollow-shaped oxide film net layer structure is not stable enough, prone to fracture or fault when generating, cause the unstable problem of white polishing leather tensile strength, the application proposes a kind of tensile white polishing leather for crystal polishing and its production process, reinforcing ring and reinforcing rib are prepared in tensile layer using nano mixed particles, play the role of reinforcement to tensile layer, prevent tensile layer from appearing deformation, increase the tightness of tensile layer and polishing layer, substrate layer connection, improve the tensile property of polishing layer and substrate layer.

Description

Technical Field

[0001] This invention relates to the field of polishing skin technology, specifically to a tensile-resistant white polishing skin for crystal polishing and its manufacturing process. Background Technology

[0002] White abrasive is a type of polishing cloth. It is stretched and deformed by friction during the polishing process.

[0003] Chinese patent CN110712143B discloses a tensile-resistant white polished leather and its production method. The method includes, from top to bottom, a polishing surface, an abrasive layer, a tensile-resistant layer, a substrate, and an anti-slip adhesive layer. The polishing surface, abrasive layer, tensile-resistant layer, substrate, and anti-slip adhesive layer are sequentially composited and connected together. After mixing nano-aggregate particles and water-based epoxy resin, the mixture is placed in an oxygen-rich environment and stirred for 24 to 48 hours. The oxides in the nano-aggregate particles react with oxygen to form a hollow oxide film mesh layer. This mesh layer is located between the polishing surface, abrasive layer, substrate, and anti-slip adhesive layer, providing support for the polishing surface and making the white polished leather highly tensile and resistant to deformation.

[0004] While this patent addresses some of the problems in the background technology, the porous oxide film network structure formed by the reaction of oxides and oxygen in the coated nano-aggregate particles is not stable enough and is prone to breakage or delamination during formation, resulting in unstable tensile strength of the white skin. Summary of the Invention

[0005] The purpose of this invention is to provide a tensile-resistant white polishing skin for crystal polishing and its manufacturing process. The tensile layer uses nano-mixed particles to prepare reinforcing rings and reinforcing ribs, forming a fixed mesh-like protrusion structure on the surface of the tensile layer, which strengthens the tensile layer and prevents deformation. The protruding reinforcing rings and reinforcing ribs are embedded in the polishing layer and the base layer, increasing the tightness of the connection between the tensile layer and the polishing layer and the base layer, improving the tensile performance of the polishing layer and the base layer, and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tensile-resistant white abrasive for crystal polishing, comprising a polishing layer, a tensile-resistant layer, and a base layer, wherein the polishing layer, tensile-resistant layer, and base layer are sequentially composited from top to bottom. The weight proportions of the raw materials used in the tensile-resistant layer are as follows: 20-30 parts of first epoxy resin adhesive, 2-4 parts of first filler, 5-12 parts of first polyurethane, 5-15 parts of nano-mixed particles, 1-3 parts of first mixed fiber material, and 2-4 parts of polyamide resin. The epoxy groups of the first epoxy resin adhesive are all linked to benzene rings or aliphatic hydrocarbons by epoxy propyl ether. The resin molecular chain is grafted with acrylic acid and maleic anhydride monomers, and the epoxy resin molecular chain contains tertiary amines or quaternary amine bases; the first filler is one or a mixture of two or more of asbestos powder, quartz powder, graphite powder, and alumina; the nano-mixed particles are a mixture of zinc oxide, alumina, and carbonized wood chips with a size of 0.01-50 μm, wherein zinc oxide accounts for 20%-40%, alumina accounts for 20%-40%, and carbonized wood chips account for 30%-60%; the first mixed fiber material is a mixture of at least two of asbestos fiber, glass fiber, Kevlar fiber, and carbon fiber.

[0007] Preferably, the upper and lower surfaces of the tensile layer are provided with reinforcing rings and reinforcing ribs. The reinforcing rings are concentric circles, and the reinforcing ribs include ribs distributed radially along the reinforcing rings and ribs symmetrically distributed radially along the reinforcing rings.

[0008] Preferably, the reinforcing ring and the reinforcing rib are of equal thickness, with a thickness of 0.3-0.5 mm.

[0009] Preferably, the processing method for the carbonized wood chips is as follows:

[0010] After slicing the Scots pine wood, it is subjected to anhydrous and oxygen-free pyrolysis treatment at 200℃-220℃. The treated Scots pine wood is then crushed, ground, and sieved until the size meets the requirement of 0.01-50um.

[0011] Preferably, the raw materials used in the polishing layer have the following weight proportions: 20-30 parts of second epoxy resin adhesive, 2-4 parts of second filler, 5-12 parts of second polyurethane, 7-12 parts of nano-mixed abrasive, and 1-3 parts of second mixed fiber material. The epoxy groups of the second epoxy resin adhesive are all linked to benzene rings or aliphatic hydrocarbons by epoxypropyl ether. The epoxy resin molecular chain is grafted with acrylic acid and maleic anhydride monomers, and the epoxy resin molecular chain contains tertiary amines or quaternary amine bases. The second filler is one or a mixture of two or more of asbestos powder, quartz powder, graphite powder, and alumina.

[0012] Preferably, the nano-mixed abrasive is a mixture of zinc oxide, aluminum oxide, submicron cerium oxide, and silicon carbide with a size of 0.01-50 μm, wherein zinc oxide accounts for 10%-20%, aluminum oxide accounts for 10%-20%, submicron cerium oxide accounts for 30%-50%, and silicon carbide accounts for 10%-20%.

[0013] Preferably, the second mixed fiber material is a mixture of at least two of polyamide fibers, aramid fibers, and polyurethane fibers.

[0014] Preferably, the base layer is woven from polyamide fiber, polypropylene fiber, and aramid fiber, wherein the polyamide fiber accounts for 10-30%, the polypropylene fiber accounts for 30-80%, and the aramid fiber accounts for 20%-30%, and an anti-slip adhesive layer is bonded to the base layer.

[0015] Preferably, the raw materials used in the anti-slip adhesive layer have the following weight proportions: 20-30 parts of third epoxy resin, 2-4 parts of third filler, 5-12 parts of third polyurethane, and 1-2 parts of aramid fiber. The epoxy groups of the third epoxy resin are all linked to benzene rings or aliphatic hydrocarbons by epoxypropyl ether. The epoxy resin molecular chain is grafted with acrylic acid and maleic anhydride monomers, and the epoxy resin molecular chain contains tertiary amines or quaternary amine bases. The third filler is one or a mixture of two or more of asbestos powder, quartz powder, graphite powder, and alumina.

[0016] Another technical problem to be solved by the present invention is to provide a manufacturing process for tensile-resistant white polishing skin for crystal polishing, comprising the following steps:

[0017] S1 preparation of tensile layer:

[0018] S11: Mix the proportioned first filler, first polyurethane and first mixed fiber material evenly, and put them into an internal mixer for internal mixing. The mixing temperature is 80-200℃ and the time is 5-10 minutes to obtain the internal mixing product.

[0019] S12: Mix the nano-mixed particles, polyamide resin and first epoxy resin glue evenly, stir and fill the mold sprayed with deionized water. Press the mold onto the surface of the intensively mixed product and place the whole thing in an oven for vulcanization. The oven temperature is 100-160℃ and the time is 5-10 minutes.

[0020] S13: After removal, the mold is removed to obtain the tensile layer. At the same time, the surface of the tensile layer has reinforcing rings and reinforcing ribs formed by mold pressing.

[0021] S2 preparation of polished layer and substrate layer:

[0022] S21: Mix the proportioned second filler, second polyurethane, nano-mixed abrasive and second mixed fiber material into the second epoxy resin adhesive, stir evenly and then coat it onto one side of the tensile layer.

[0023] S22: Immerse the fabric woven from polyamide fiber, polypropylene fiber and aramid fiber in the third epoxy resin adhesive, and mix the third filler, third polyurethane and aramid fiber evenly.

[0024] S23: Take out the fabric woven from polyamide fiber, polypropylene fiber and aramid fiber and attach it to the other side of the tensile layer. At the same time, coat the fabric surface with the third filler, the third polyurethane and aramid fiber mixture, and vulcanize at 100-160℃ for 10-20 minutes to obtain white bleached leather.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. This invention uses nano-mixed particles to prepare reinforcing rings and reinforcing ribs in the tensile layer, forming a fixed mesh-like protrusion structure on the surface of the tensile layer, which strengthens the tensile layer and prevents deformation. The protruding reinforcing rings and reinforcing ribs are embedded in the polishing layer and the base layer, increasing the tightness of the connection between the tensile layer and the polishing layer and the base layer, and improving the tensile performance of the polishing layer and the base layer.

[0027] 2. The nano-mixed particles in this invention contain carbonized wood chips. The carbonized wood chips made from carbonized pine wood have low moisture content, stable material, and are resistant to tensile deformation, thus exhibiting good tensile strength.

[0028] 3. In this invention, the nano-mixed particles, polyamide resin and first epoxy resin are mixed evenly and then filled into a mold sprayed with deionized water. After vulcanization, the deionized water is evaporated at high temperature, leaving micropores on the surface of the tensile layer. This further increases the tightness of the connection between the tensile layer and the polishing layer and the base layer, and facilitates the peeling of the cured tensile layer. Attached Figure Description

[0029] Figure 1 This is an exploded view of the tensile whitening process of the present invention.

[0030] In the diagram: 1. Polished layer; 2. Tensile layer; 21. Reinforcing ring; 22. Reinforcing rib; 3. Base layer; 31. Anti-slip adhesive layer. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0032] To address the issue of unstable, easily fractured, or fractured during formation of the porous oxide film network structure formed by the reaction of oxides and oxygen in existing coated nanoparticles, which leads to unstable tensile strength of the white skin, please refer to [link to relevant documentation]. Figure 1 This embodiment provides the following technical solution:

[0033] A tensile-resistant white abrasive skin for crystal polishing includes a polishing layer 1, a tensile-resistant layer 2, and a base layer 3, which are sequentially bonded together from top to bottom. The weight proportions of the raw materials used in the tensile-resistant layer 2 are as follows:

[0034] The composition includes 22 parts of first epoxy resin adhesive, 2 parts of first filler, 6 parts of first polyurethane, 5 parts of nano-mixed particles, 1 part of first mixed fiber material, and 2 parts of polyamide resin.

[0035] The epoxy groups of the first epoxy resin adhesive are all connected to the benzene core by epoxy propyl ether. The epoxy resin molecular chain is grafted with acrylic acid and maleic anhydride monomers, and the epoxy resin molecular chain contains tertiary amines or quaternary amine bases.

[0036] The first filler is a mixture of asbestos powder, quartz powder and alumina;

[0037] The nano-mixed particles are a mixture of zinc oxide, aluminum oxide, and carbonized wood chips with a size of 0.01-50 μm, wherein zinc oxide accounts for 25%, aluminum oxide accounts for 25%, and carbonized wood chips account for 50%.

[0038] The first mixed fiber material is a mixture of asbestos fiber, glass fiber, and Kevlar fiber.

[0039] The upper and lower surfaces of the tensile layer 2 are provided with reinforcing rings 21 and reinforcing ribs 22. The reinforcing rings 21 are concentric circular structures. The reinforcing ribs 22 include ribs distributed radially along the reinforcing rings 21 and ribs symmetrically distributed radially along the reinforcing rings 21. The reinforcing rings 21 and reinforcing ribs 22 are of equal thickness, with a thickness of 0.3-0.5 mm.

[0040] Specifically, the reinforcing ring 21 and the reinforcing rib 22 are connected to form an integral structure, forming a mesh-like protrusion structure on the upper and lower surfaces of the tensile layer 2, which strengthens the tensile layer 2 and prevents deformation of the tensile layer 2. At the same time, the protruding reinforcing ring 21 and the reinforcing rib 22 are embedded in the polishing layer 1 and the base layer 3, which increases the tightness of the connection between the tensile layer 2 and the polishing layer 1 and the base layer 3. Furthermore, the structure of the reinforcing ring 21 and the reinforcing rib 22 provides a certain support for the polishing layer 1 and the base layer 3, thereby improving the tensile performance of the polishing layer 1 and the base layer 3.

[0041] The processing method for carbonized wood chips is as follows:

[0042] After slicing the Scots pine wood, it is subjected to anhydrous and oxygen-free pyrolysis treatment at 200℃-220℃. The treated Scots pine wood is then crushed, ground, and sieved until the size meets the requirement of 0.01-50um.

[0043] The weight proportions of each component of the raw materials used in polishing layer 1 are as follows: 28 parts of second epoxy resin, 4 parts of second filler, 5 parts of second polyurethane, 11 parts of nano-mixed abrasive, and 1 part of second mixed fiber material.

[0044] The epoxy groups of the second epoxy resin adhesive are all connected to the benzene core by epoxy propyl ether. The epoxy resin molecular chain is grafted with acrylic acid and maleic anhydride monomers, and the epoxy resin molecular chain contains tertiary amines or quaternary amine bases.

[0045] The second filler is a mixture of asbestos powder and quartz powder.

[0046] The nano-hybrid abrasive is a mixture of zinc oxide, aluminum oxide, submicron cerium oxide, and silicon carbide with a size of 0.01-50 μm, wherein zinc oxide accounts for 13%, aluminum oxide accounts for 17%, submicron cerium oxide accounts for 50%, and silicon carbide accounts for 20%.

[0047] The second mixed fiber material is a mixture of polyamide fiber and polyurethane fiber.

[0048] The base layer 3 is woven from polyamide fiber, polypropylene fiber and aramid fiber, wherein the polyamide fiber accounts for 25%, the polypropylene fiber accounts for 50% and the aramid fiber accounts for 25%. An anti-slip adhesive layer 31 is bonded to the base layer 3.

[0049] The weight proportions of the raw materials used in the anti-slip adhesive layer 31 are as follows: 22 parts of third epoxy resin, 2 parts of third filler, 5 parts of third polyurethane, and 1 part of aramid fiber. The epoxy groups of the third epoxy resin are all linked to the benzene core by epoxypropyl ether. The epoxy resin molecular chain is grafted with acrylic acid and maleic anhydride monomers, and the epoxy resin molecular chain contains tertiary amines or quaternary amine bases. The third filler is a mixture of asbestos powder, quartz powder, graphite powder, and alumina.

[0050] To better illustrate the production process of tensile-resistant white polishing film for crystal polishing, this embodiment presents a production process for tensile-resistant white polishing film for crystal polishing, including the following steps:

[0051] S1 prepares tensile layer 2:

[0052] S11: Mix the proportioned first filler, first polyurethane and first mixed fiber material evenly, and put them into an internal mixer for internal mixing. The mixing temperature is 80-200℃ and the time is 5-10 minutes to obtain the internal mixing product.

[0053] S12: Mix the nano-mixed particles, polyamide resin and first epoxy resin glue evenly, stir and fill the mold sprayed with deionized water. Press the mold onto the surface of the intensively mixed product and place the whole thing in an oven for vulcanization. The oven temperature is 100-160℃ and the time is 5-10 minutes.

[0054] S13: After taking it out, remove the mold to obtain tensile layer 2. At the same time, the surface of tensile layer 2 has reinforcing ring 21 and reinforcing rib 22 formed by mold pressing.

[0055] S2 prepares polished layer 1 and base layer 3:

[0056] S21: Mix the proportioned second filler, second polyurethane, nano-mixed abrasive and second mixed fiber material into the second epoxy resin adhesive, stir evenly and then coat it onto one side of the tensile layer 2;

[0057] S22: Immerse the fabric woven from polyamide fiber, polypropylene fiber and aramid fiber in the third epoxy resin adhesive, and mix the third filler, third polyurethane and aramid fiber evenly.

[0058] S23: Take out the fabric woven from polyamide fiber, polypropylene fiber and aramid fiber and attach it to the other side of the tensile layer 2. At the same time, coat the fabric surface with the third filler, the third polyurethane and aramid fiber mixture, and vulcanize at 100-160℃ for 10-20 minutes to obtain white bleached leather. Example

[0059] The difference between Example 2 and Example 1 lies in the raw material ratio of the tensile layer 2. The weight ratio of each component of the raw materials used in the tensile layer 2 is as follows: 22 parts of first epoxy resin adhesive, 2 parts of first filler, 6 parts of first polyurethane, 5 parts of nano-mixed particles, 1 part of first mixed fiber material, and 2 parts of polyamide resin.

[0060] The nano-mixed particles are a mixture of zinc oxide, aluminum oxide and carbonized wood chips with a size of 0.01-50 μm, wherein zinc oxide accounts for 20%, aluminum oxide accounts for 20%, and carbonized wood chips account for 60%. Example

[0061] The difference between Example 3 and Example 1 lies in the raw material ratio of the tensile layer 2. The weight ratio of each component of the raw materials used in the tensile layer 2 is as follows: 22 parts of first epoxy resin adhesive, 2 parts of first filler, 6 parts of first polyurethane, 5 parts of nano-mixed particles, 1 part of first mixed fiber material, and 2 parts of polyamide resin.

[0062] The nano-mixed particles are a mixture of zinc oxide, aluminum oxide and carbonized wood chips with a size of 0.01-50 μm, wherein zinc oxide accounts for 35%, aluminum oxide accounts for 35%, and carbonized wood chips account for 30%. Example

[0063] The difference between Example 4 and Example 1 lies in the raw material ratio of the tensile layer 2. The weight ratio of each component of the raw materials used in the tensile layer 2 is as follows: 22 parts of first epoxy resin adhesive, 2 parts of first filler, 6 parts of first polyurethane, 10 parts of nano-mixed particles, 1 part of first mixed fiber material, and 2 parts of polyamide resin.

[0064] The nano-mixed particles are a mixture of zinc oxide, aluminum oxide and carbonized wood chips with a size of 0.01-50 μm, wherein zinc oxide accounts for 25%, aluminum oxide accounts for 25%, and carbonized wood chips account for 50%. Example

[0065] The difference between Example 5 and Example 4 lies in the raw material ratio of the tensile layer 2. The weight proportions of each component of the raw materials used in the tensile layer 2 are as follows: 22 parts of first epoxy resin adhesive, 2 parts of first filler, 6 parts of first polyurethane, 15 parts of nano-mixed particles, 1 part of first mixed fiber material, and 2 parts of polyamide resin.

[0066] The nano-mixed particles are a mixture of zinc oxide, aluminum oxide and carbonized wood chips with a size of 0.01-50 μm, wherein zinc oxide accounts for 25%, aluminum oxide accounts for 25%, and carbonized wood chips account for 50%.

[0067] Comparative Example 1:

[0068] The difference between Comparative Example 1 and Example 1 lies in the different raw material ratios of the tensile layer 2. The weight ratios of the components of the raw materials used in the tensile layer 2 are as follows: 22 parts of the first epoxy resin adhesive, 2 parts of the first filler, 6 parts of the first polyurethane, 1 part of the first mixed fiber material, and 2 parts of polyamide resin.

[0069] Comparative Example 2:

[0070] The difference between Comparative Example 2 and Example 1 lies in the different raw material ratios of the tensile layer 2. The weight proportions of each component of the raw materials used in the tensile layer 2 are as follows: 22 parts of first epoxy resin adhesive, 2 parts of first filler, 6 parts of first polyurethane, 5 parts of nano-mixed particles, 1 part of first mixed fiber material, and 2 parts of polyamide resin.

[0071] The nano-mixed particles are a mixture of zinc oxide and aluminum oxide with a size of 0.01-50 μm, wherein zinc oxide accounts for 50% and aluminum oxide accounts for 50%.

[0072] The test was conducted according to GB / T 3354-2014. Except for the content of nano-aggregated particles in the tensile layer 2 material, all other materials were the same. Seven pieces of white abrasive skin of equal length were cut along the width direction. One end of each piece was clamped, and the other end was pulled with a force of 40N for 30 minutes. This process was repeated 15,000 times, and the deformation was measured. The changes in the surface and inner parts of the white abrasive skin were then observed, and any cracks were noted. After standing for 48 hours, the springback was measured. Comparative Example 2 showed dense, coarse cracks on its surface.

[0073]

[0074] The table above shows that, with the same total amount of nano-mixed particles, the higher the proportion of carbonized wood chips, the smaller the deformation and the better the tensile strength. The optimal amount of nano-mixed particles is 10 parts, at which point the white veneer has small deformation, high resilience, and no cracks.

[0075] In summary, this invention proposes a tensile-resistant white polishing skin for crystal polishing and its manufacturing process. In the tensile layer 2, reinforcing rings 21 and reinforcing ribs 22 are prepared using nano-mixed particles, forming a fixed mesh-like protrusion structure on the surface of the tensile layer 2. This reinforces the tensile layer 2, preventing deformation. The protruding reinforcing rings 21 and reinforcing ribs 22 are embedded within the polishing layer 1 and the base layer 3, increasing the tightness of the connection between the tensile layer 2 and the polishing layer 1 and base layer 3, thus improving the tensile properties of the polishing layer 1 and the base layer 3. Simultaneously, the nano-mixed particles... The particles contain carbonized wood chips. The carbonized wood chips made from carbonized pine wood have low moisture content, stable material, and are resistant to deformation under tension, exhibiting good tensile strength. In addition, in this invention, the nano-mixed particles, polyamide resin, and first epoxy resin adhesive are mixed evenly and then filled into a mold sprayed with deionized water. After vulcanization, the deionized water is evaporated at high temperature, leaving micropores on the surface of the tensile layer 2. This further increases the tightness of the connection between the tensile layer 2 and the polishing layer 1 and the base layer 3, and facilitates the peeling of the cured tensile layer 2.

[0076] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0077] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tensile-resistant white abrasive for crystal polishing, comprising a polishing layer (1), a tensile-resistant layer (2), and a base layer (3), characterized in that: The polishing layer (1), tensile layer (2), and base layer (3) are sequentially composited from top to bottom. The weight proportions of the raw materials used in the tensile layer (2) are as follows: 20-30 parts of first epoxy resin adhesive, 2-4 parts of first filler, 5-12 parts of first polyurethane, 5-15 parts of nano-mixed particles, 1-3 parts of first mixed fiber material, and 2-4 parts of polyamide resin. The epoxy groups of the first epoxy resin adhesive are all linked to benzene rings or aliphatic hydrocarbons by epoxy propyl ether. Acrylic acid and maleic anhydride are grafted into the epoxy resin molecular chain. The monomer and epoxy resin molecular chain contain tertiary amines or quaternary amine bases; the first filler is one or a mixture of two or more of asbestos powder, quartz powder, graphite powder, and alumina; the nano-mixed particles are a mixture of zinc oxide, alumina, and carbonized wood chips with a size of 0.01-50 μm, wherein zinc oxide accounts for 20%-40%, alumina accounts for 20%-40%, and carbonized wood chips account for 30%-60%; the first mixed fiber material is a mixture of at least two of asbestos fiber, glass fiber, Kevlar fiber, and carbon fiber.

2. The anti-tensile white abrasive skin for crystal polishing according to claim 1, characterized in that: The upper and lower surfaces of the tensile layer (2) are provided with reinforcing rings (21) and reinforcing ribs (22). The reinforcing rings (21) are concentric circles, and the reinforcing ribs (22) include ribs distributed radially along the reinforcing rings (21) and ribs symmetrically distributed radially along the reinforcing rings (21).

3. The anti-tensile white abrasive skin for crystal polishing according to claim 2, characterized in that: The reinforcing ring (21) and the reinforcing rib (22) are of equal thickness, with a thickness of 0.3-0.5 mm.

4. The anti-tensile white abrasive skin for crystal polishing according to claim 3, characterized in that: The processing method of the carbonized wood chips is as follows: after slicing the pine wood, perform anhydrous and oxygen-free pyrolysis treatment at 200℃-220℃, crush and grind the treated pine wood, and sieve it until the size meets the requirement of 0.01-50um.

5. The anti-tensile white abrasive skin for crystal polishing according to claim 4, characterized in that: The weight proportions of each component of the raw materials used in the polishing layer (1) are as follows: 20-30 parts of second epoxy resin adhesive, 2-4 parts of second filler, 5-12 parts of second polyurethane, 7-12 parts of nano-mixed abrasive, and 1-3 parts of second mixed fiber material. The epoxy groups of the second epoxy resin adhesive are all connected to benzene rings or aliphatic hydrocarbons by epoxy propyl ether. Acrylic acid and maleic anhydride monomers are grafted into the epoxy resin molecular chain. The epoxy resin molecular chain contains tertiary amines or quaternary amine bases. The second filler is one or more of asbestos powder, quartz powder, graphite powder, and alumina.

6. The anti-tensile white abrasive skin for crystal polishing according to claim 5, characterized in that: The nano-hybrid abrasive is a mixture of zinc oxide, aluminum oxide, submicron cerium oxide, and silicon carbide with a size of 0.01-50 μm, wherein zinc oxide accounts for 10%-20%, aluminum oxide accounts for 10%-20%, submicron cerium oxide accounts for 30%-50%, and silicon carbide accounts for 10%-20%.

7. The anti-tensile white abrasive skin for crystal polishing according to claim 6, characterized in that: The second mixed fiber material is a mixture of at least two of polyamide fibers and polyurethane fibers.

8. The anti-tensile whitening abrasive for crystal polishing according to claim 7, characterized in that: An anti-slip adhesive layer (31) is bonded to the base layer (3).

9. The tensile white abrasive skin for crystal polishing according to claim 8, characterized in that: The weight proportions of each component of the raw materials used in the anti-slip adhesive layer (31) are as follows: 20-30 parts of third epoxy resin adhesive, 2-4 parts of third filler, 5-12 parts of third polyurethane, and 1-2 parts of aramid fiber. The epoxy groups of the third epoxy resin adhesive are all connected to benzene rings or aliphatic hydrocarbons by epoxy propyl ether. Acrylic acid and maleic anhydride monomers are grafted into the epoxy resin molecular chain. The epoxy resin molecular chain contains tertiary amines or quaternary amine bases. The third filler is one or more of asbestos powder, quartz powder, graphite powder, and alumina.

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