阅读说明：本技术 一种具有耐磨性能的离型纸及其制备方法 (Release paper with wear resistance and preparation method thereof ) 是由 廖平湘 于 2020-12-24 设计创作，主要内容包括：本发明公开了一种具有耐磨性能的离型纸及其制备方法,耐磨性能的离型纸包括原纸层、淋膜层和耐磨离型剂层,耐磨离型剂层按照重量份的原料包括：异丙醇镁、丙烯酸多元醇、硅石颗粒、丙烯酸酯类硬单体、硫醇类链转移剂、硅烷偶联剂、聚氨酯丙烯酸酯类低聚物、丙烯酸酯类活性稀释剂、附着力促进剂、流平剂、聚苯醚、聚乙二醇、环甲基硅氧烷、光引发剂、甲基三甲氧基硅烷、正硅酸乙酯、溶剂。本发明采用折光系数相近的丙烯酸酯硬单体进行自由基聚合,保证所得耐磨离型剂层喷涂原料的透光度与透明性,提高了致密性,以达到体系耐刮性佳的目的,避免离型剂层被磨花造成离型失效的现象,提高了离型纸的使用效果。(The invention discloses release paper with wear resistance and a preparation method thereof, wherein the release paper with wear resistance comprises a raw paper layer, a laminating layer and a wear-resistant release agent layer, and the wear-resistant release agent layer comprises the following raw materials in parts by weight: magnesium isopropoxide, acrylic polyol, silica particles, acrylate hard monomers, thiol chain transfer agents, silane coupling agents, polyurethane acrylate oligomers, acrylate reactive diluents, adhesion promoters, flatting agents, polyphenyl ether, polyethylene glycol, cyclomethicone, photoinitiators, methyltrimethoxysilane, tetraethoxysilane and solvents. According to the invention, the acrylate hard monomer with similar refractive index is adopted for free radical polymerization, so that the transmittance and transparency of the spraying raw material of the wear-resistant release agent layer are ensured, the compactness is improved, the aim of good scratch resistance of the system is fulfilled, the release failure phenomenon caused by the abrasion of the release agent layer is avoided, and the use effect of the release paper is improved.)

1. The utility model provides a from type paper with wear resistance, includes raw paper layer, drenches rete and wear-resisting release agent layer, its characterized in that, raw paper layer's surface has coated in proper order and has drenched rete and wear-resisting release agent layer, wear-resisting release agent layer includes according to part by weight's raw materials: 30-40 parts of magnesium isopropoxide, 15-25 parts of acrylic polyol, 2-6 parts of silica particles, 8-12 parts of acrylate hard monomers, 0.3-0.7 part of thiol chain transfer agent, 1-2 parts of silane coupling agent, 10-20 parts of polyurethane acrylate oligomer, 5-10 parts of acrylate active diluent, 8-12 parts of adhesion promoter, 0.5-1 part of flatting agent, 8-15 parts of polyphenyl ether, 8-12 parts of polyethylene glycol, 3-4 parts of cyclomethicone, 4-6 parts of photoinitiator, 1-3 parts of methyltrimethoxysilane, 6-8 parts of ethyl orthosilicate and 120 parts of solvent 100-one.

2. The release paper with wear resistance of claim 1, wherein the wear-resistant release agent layer comprises the following raw materials in parts by weight: 32-38 parts of magnesium isopropoxide, 18-22 parts of acrylic polyol, 3-5 parts of silica particles, 9-11 parts of acrylate hard monomers, 0.4-0.6 part of thiol chain transfer agent, 1.2-1.8 parts of silane coupling agent, 12-18 parts of polyurethane acrylate oligomer, 6-9 parts of acrylate active diluent, 9-11 parts of adhesion promoter, 0.6-0.9 part of flatting agent, 10-12 parts of polyphenyl ether, 9-11 parts of polyethylene glycol, 3.2-3.8 parts of cyclomethicone, 4.5-5.5 parts of photoinitiator, 1.5-2.5 parts of methyltrimethoxysilane, 6.5-7.5 parts of ethyl orthosilicate and 115 parts of solvent 105-.

3. The release paper with wear resistance of claim 1, wherein the wear-resistant release agent layer comprises the following raw materials in parts by weight: 35 parts of magnesium isopropoxide, 20 parts of acrylic polyol, 4 parts of silica particles, 10 parts of acrylate hard monomer, 0.5 part of thiol chain transfer agent, 1.5 parts of silane coupling agent, 15 parts of polyurethane acrylate oligomer, 8 parts of acrylate reactive diluent, 10 parts of adhesion promoter, 0.8 part of flatting agent, 11 parts of polyphenyl ether, 10 parts of polyethylene glycol, 3.5 parts of cyclomethicone, 5 parts of photoinitiator, 2 parts of methyltrimethoxysilane, 7 parts of ethyl orthosilicate and 110 parts of solvent.

4. The release paper with abrasion resistance according to any one of claims 1 to 3, wherein the acrylate reactive diluent is a mixture of monofunctional reactive diluent, trifunctional reactive diluent and multifunctional reactive diluent, and the monofunctional reactive diluent comprises: hydroxyethyl acrylate, vinyl acetate; trifunctional reactive diluents include: trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate; the multifunctional reactive diluent comprises: dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate, and ethoxylated products thereof.

5. The release paper with abrasion resistance according to any one of claims 1-3, wherein the solvent is a mixture of two of toluene, ethyl acetate, isopropanol or butanone.

6. The release paper with abrasion resistance according to any one of claims 1 to 3, wherein the adhesion promoter is polyacrylate and poly (trimethoxy siloxane) copolymer, chlorinated polyester resin or multifunctional urethane acrylate resin.

7. The release paper with abrasion resistance according to any one of claims 1 to 3, wherein the leveling agent is modified polysiloxane.

8. A method for preparing the release paper with abrasion resistance as claimed in any one of claims 1 to 3, which comprises the following steps:

(1) performing film spraying on the raw paper layer to obtain a film spraying layer;

(2) weighing raw materials of the wear-resistant release agent layer according to the parts by weight;

(3) adding magnesium isopropoxide into water, and heating to hydrolyze the magnesium isopropoxide into gel, wherein the heating temperature is 50-70 ℃;

(4) uniformly mixing acrylic polyol, silica particles, acrylate hard monomers, thiol chain transfer agents, polyurethane acrylate oligomers, acrylate reactive diluents, adhesion promoters, leveling agents, polyphenyl ether, polyethylene glycol, cyclomethicone, methyltrimethoxysilane, tetraethoxysilane and photoinitiators accounting for 30-40% of the total mass of the photoinitiators to form a mixture;

(5) mixing a mixture accounting for 70-80% of the total mass of the mixture with a solvent accounting for 30-50% of the total mass of the mixture, adding the mixture into a reaction kettle, heating to 60-80 ℃, reacting for 80-100min, and dropwise adding the rest mixture into a reaction system in the reaction kettle within 4-6 h;

(6) after the dropwise addition is finished, adding the rest of photoinitiator and the rest of solvent into a reaction system in a reaction kettle, heating to 85-95 ℃, preserving heat for 2-4 hours, adding a silane coupling agent, cooling to 30-50 ℃, and discharging to obtain a spraying raw material of the wear-resistant release agent layer;

(7) and (3) coating the obtained wear-resistant release agent layer spraying raw material on the laminating layer by using a coating device, and irradiating for 3-5min by using an ultraviolet lamp to obtain a finished product.

Technical Field

The invention relates to the technical field of release paper preparation, in particular to release paper with wear resistance and a preparation method thereof.

Background

Along with the prosperity of the domestic automobile, laptop and mobile phone markets, a large amount of raw materials such as high-grade automobile adhesive films, computer protective films and mobile phone adhesive films are imported, the domestic adhesive films are always insufficient in the aspects of technologies such as scratch resistance and light transmittance, and thousands of domestic adhesive film suppliers cannot enter the high-end markets all the time due to technical defects.

The release paper is also called as release paper or release paper, and is mainly used for adhering to an adhesive layer on the surface of the adhesive tape to protect the surface of the adhesive tape. The existing release paper is generally obtained by laminating a laminating layer (mainly made of polyethylene) on the surface of a release paper backing paper layer, and then coating a release agent coating (mainly made of silicone oil) on the surface of the laminating layer.

The existing release agent coating is easy to wear in the production and use processes, so that the surface release effect is reduced, and the effect is lost.

Disclosure of Invention

The invention aims to provide release paper with good scratch resistance, strong light transmission and wear resistance and a preparation method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a from type paper with wear resistance, includes raw paper layer, drenches rete and wear-resisting release agent layer, the surface of raw paper layer has coated in proper order and has drenched rete and wear-resisting release agent layer, wear-resisting release agent layer includes according to part by weight's raw materials: 30-40 parts of magnesium isopropoxide, 15-25 parts of acrylic polyol, 2-6 parts of silica particles, 8-12 parts of acrylate hard monomers, 0.3-0.7 part of thiol chain transfer agent, 1-2 parts of silane coupling agent, 10-20 parts of polyurethane acrylate oligomer, 5-10 parts of acrylate active diluent, 8-12 parts of adhesion promoter, 0.5-1 part of flatting agent, 8-15 parts of polyphenyl ether, 8-12 parts of polyethylene glycol, 3-4 parts of cyclomethicone, 4-6 parts of photoinitiator, 1-3 parts of methyltrimethoxysilane, 6-8 parts of ethyl orthosilicate and 120 parts of solvent 100-one.

As a further scheme of the invention: the wear-resistant release agent layer comprises the following raw materials in parts by weight: 32-38 parts of magnesium isopropoxide, 18-22 parts of acrylic polyol, 3-5 parts of silica particles, 9-11 parts of acrylate hard monomers, 0.4-0.6 part of thiol chain transfer agent, 1.2-1.8 parts of silane coupling agent, 12-18 parts of polyurethane acrylate oligomer, 6-9 parts of acrylate active diluent, 9-11 parts of adhesion promoter, 0.6-0.9 part of flatting agent, 10-12 parts of polyphenyl ether, 9-11 parts of polyethylene glycol, 3.2-3.8 parts of cyclomethicone, 4.5-5.5 parts of photoinitiator, 1.5-2.5 parts of methyltrimethoxysilane, 6.5-7.5 parts of ethyl orthosilicate and 115 parts of solvent 105-.

As a further scheme of the invention: the wear-resistant release agent layer comprises the following raw materials in parts by weight: 35 parts of magnesium isopropoxide, 20 parts of acrylic polyol, 4 parts of silica particles, 10 parts of acrylate hard monomer, 0.5 part of thiol chain transfer agent, 1.5 parts of silane coupling agent, 15 parts of polyurethane acrylate oligomer, 8 parts of acrylate reactive diluent, 10 parts of adhesion promoter, 0.8 part of flatting agent, 11 parts of polyphenyl ether, 10 parts of polyethylene glycol, 3.5 parts of cyclomethicone, 5 parts of photoinitiator, 2 parts of methyltrimethoxysilane, 7 parts of ethyl orthosilicate and 110 parts of solvent.

As a further scheme of the invention: the acrylate reactive diluent is a mixture of a monofunctional reactive diluent, a trifunctional reactive diluent and a multifunctional reactive diluent, and the monofunctional reactive diluent comprises: hydroxyethyl acrylate, vinyl acetate; trifunctional reactive diluents include: trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate; the multifunctional reactive diluent comprises: dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate, and ethoxylated products thereof.

As a further scheme of the invention: the solvent is a mixture of two of toluene, ethyl acetate, isopropanol or butanone.

As a further scheme of the invention: the adhesion promoter is polyacrylate and polyacrylic acid trimethoxy silicone ester copolymer, chlorinated polyester resin or polyfunctional polyurethane acrylate resin.

As a still further scheme of the invention: the leveling agent is modified polysiloxane.

The preparation method of the release paper with the wear-resisting property comprises the following specific steps:

(1) performing film spraying on the raw paper layer to obtain a film spraying layer;

(2) weighing raw materials of the wear-resistant release agent layer according to the parts by weight;

(3) adding magnesium isopropoxide into water, and heating to hydrolyze the magnesium isopropoxide into gel, wherein the heating temperature is 50-70 ℃;

(4) uniformly mixing acrylic polyol, silica particles, acrylate hard monomers, thiol chain transfer agents, polyurethane acrylate oligomers, acrylate reactive diluents, adhesion promoters, leveling agents, polyphenyl ether, polyethylene glycol, cyclomethicone, methyltrimethoxysilane, tetraethoxysilane and photoinitiators accounting for 30-40% of the total mass of the photoinitiators to form a mixture;

(5) mixing a mixture accounting for 70-80% of the total mass of the mixture with a solvent accounting for 30-50% of the total mass of the mixture, adding the mixture into a reaction kettle, heating to 60-80 ℃, reacting for 80-100min, and dropwise adding the rest mixture into a reaction system in the reaction kettle within 4-6 h;

(6) after the dropwise addition is finished, adding the rest of photoinitiator and the rest of solvent into a reaction system in a reaction kettle, heating to 85-95 ℃, preserving heat for 2-4 hours, adding a silane coupling agent, cooling to 30-50 ℃, and discharging to obtain a spraying raw material of the wear-resistant release agent layer;

(7) and (3) coating the obtained wear-resistant release agent layer spraying raw material on the laminating layer by using a coating device, and irradiating for 3-5min by using an ultraviolet lamp to obtain a finished product.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the acrylate hard monomer with similar refractive index is adopted for free radical polymerization, so that the transmittance and transparency of the spraying raw material of the wear-resistant release agent layer are ensured, the compactness is improved, the aim of good scratch resistance of the system is fulfilled, the release failure phenomenon caused by the abrasion of the release agent layer is avoided, and the use effect of the release paper is improved.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Example 1

The utility model provides a from type paper with wear resistance, includes raw paper layer, drenches rete and wear-resisting release agent layer, the surface of raw paper layer has coated in proper order and has drenched rete and wear-resisting release agent layer, wear-resisting release agent layer includes according to part by weight's raw materials: 30 parts of magnesium isopropoxide, 15 parts of acrylic polyol, 2 parts of silica particles, 8 parts of acrylate hard monomer, 0.3 part of thiol chain transfer agent, 1 part of silane coupling agent, 10 parts of polyurethane acrylate oligomer, 5 parts of acrylate active diluent, 8 parts of adhesion promoter, 0.5 part of flatting agent, 8 parts of polyphenyl ether, 8 parts of polyethylene glycol, 3 parts of cyclomethicone, 4 parts of photoinitiator, 1 part of methyltrimethoxysilane, 6 parts of ethyl orthosilicate and 100 parts of solvent.

The preparation method of the release paper with the wear-resisting property comprises the following specific steps:

(1) performing film spraying on the raw paper layer to obtain a film spraying layer;

(2) weighing raw materials of the wear-resistant release agent layer according to the parts by weight;

(3) adding magnesium isopropoxide into water, and heating to hydrolyze the magnesium isopropoxide into gel, wherein the heating temperature is 50 ℃;

(4) uniformly mixing acrylic polyol, silica particles, acrylate hard monomers, thiol chain transfer agents, polyurethane acrylate oligomers, acrylate reactive diluents, adhesion promoters, flatting agents, polyphenyl ether, polyethylene glycol, cyclomethicone, methyltrimethoxysilane, tetraethoxysilane and photoinitiators accounting for 30% of the total mass of the photoinitiators to form a mixture;

(5) mixing a mixture accounting for 70% of the total mass of the mixture with a solvent accounting for 30% of the total mass of the mixture, adding the mixture into a reaction kettle, heating to 60 ℃, reacting for 80min, and dropwise adding the rest mixture into a reaction system in the reaction kettle within 4 h;

(6) after the dropwise addition is finished, adding the rest of photoinitiator and the rest of solvent into a reaction system in a reaction kettle, heating to 85 ℃, preserving the temperature for 2 hours, adding a silane coupling agent, cooling to 30 ℃, and discharging to obtain a spraying raw material of the wear-resistant release agent layer;

(7) and (3) coating the obtained wear-resistant release agent layer spraying raw material on the laminating layer by using a coating device, and irradiating for 3min by using an ultraviolet lamp to obtain a finished product.

Example 2

The utility model provides a from type paper with wear resistance, includes raw paper layer, drenches rete and wear-resisting release agent layer, the surface of raw paper layer has coated in proper order and has drenched rete and wear-resisting release agent layer, wear-resisting release agent layer includes according to part by weight's raw materials: 32 parts of magnesium isopropoxide, 18 parts of acrylic polyol, 3 parts of silica particles, 9 parts of acrylate hard monomer, 0.4 part of thiol chain transfer agent, 1.2 parts of silane coupling agent, 12 parts of polyurethane acrylate oligomer, 6 parts of acrylate reactive diluent, 9 parts of adhesion promoter, 0.6 part of flatting agent, 10 parts of polyphenyl ether, 9 parts of polyethylene glycol, 3.2 parts of cyclomethicone, 4.5 parts of photoinitiator, 1.5 parts of methyltrimethoxysilane, 6.5 parts of ethyl orthosilicate and 105 parts of solvent.

The preparation method of the release paper with the wear-resisting property comprises the following specific steps:

(1) performing film spraying on the raw paper layer to obtain a film spraying layer;

(2) weighing raw materials of the wear-resistant release agent layer according to the parts by weight;

(3) adding magnesium isopropoxide into water, and heating to hydrolyze the magnesium isopropoxide into gel, wherein the heating temperature is 55 ℃;

(4) uniformly mixing acrylic polyol, silica particles, acrylate hard monomers, thiol chain transfer agents, polyurethane acrylate oligomers, acrylate reactive diluents, adhesion promoters, leveling agents, polyphenyl ether, polyethylene glycol, cyclomethicone, methyltrimethoxysilane, tetraethoxysilane and photoinitiators accounting for 32 percent of the total mass of the photoinitiators to form a mixture;

(5) mixing a mixture accounting for 72 percent of the total mass of the mixture with a solvent accounting for 35 percent of the total mass of the mixture, adding the mixture into a reaction kettle, heating the mixture to 65 ℃, reacting for 85min, and dropwise adding the rest mixture into a reaction system in the reaction kettle within 4.5 h;

(6) after the dropwise addition is finished, adding the rest of photoinitiator and the rest of solvent into a reaction system in a reaction kettle, heating to 88 ℃, preserving the temperature for 2.5 hours, adding a silane coupling agent, cooling to 35 ℃, and discharging to obtain a spraying raw material of the wear-resistant release agent layer;

(7) and (3) coating the obtained wear-resistant release agent layer spraying raw material on the laminating layer by using a coating device, and irradiating for 3.5min by using an ultraviolet lamp to obtain a finished product.

Example 3

The utility model provides a from type paper with wear resistance, includes raw paper layer, drenches rete and wear-resisting release agent layer, the surface of raw paper layer has coated in proper order and has drenched rete and wear-resisting release agent layer, wear-resisting release agent layer includes according to part by weight's raw materials: 35 parts of magnesium isopropoxide, 20 parts of acrylic polyol, 4 parts of silica particles, 10 parts of acrylate hard monomer, 0.5 part of thiol chain transfer agent, 1.5 parts of silane coupling agent, 15 parts of polyurethane acrylate oligomer, 8 parts of acrylate reactive diluent, 10 parts of adhesion promoter, 0.8 part of flatting agent, 11 parts of polyphenyl ether, 10 parts of polyethylene glycol, 3.5 parts of cyclomethicone, 5 parts of photoinitiator, 2 parts of methyltrimethoxysilane, 7 parts of ethyl orthosilicate and 110 parts of solvent.

The preparation method of the release paper with the wear-resisting property comprises the following specific steps:

(1) performing film spraying on the raw paper layer to obtain a film spraying layer;

(2) weighing raw materials of the wear-resistant release agent layer according to the parts by weight;

(3) adding magnesium isopropoxide into water, and heating to hydrolyze the magnesium isopropoxide into gel, wherein the heating temperature is 60 ℃;

(4) uniformly mixing acrylic polyol, silica particles, acrylate hard monomers, thiol chain transfer agents, polyurethane acrylate oligomers, acrylate reactive diluents, adhesion promoters, leveling agents, polyphenyl ether, polyethylene glycol, cyclomethicone, methyltrimethoxysilane, tetraethoxysilane and photoinitiators accounting for 30-40% of the total mass of the photoinitiators to form a mixture;

(5) mixing a mixture accounting for 75% of the total mass of the mixture with a solvent accounting for 40% of the total mass of the mixture, adding the mixture into a reaction kettle, heating to 70 ℃, reacting for 90min, and dropwise adding the rest mixture into a reaction system in the reaction kettle within 5 h;

(6) after the dropwise addition is finished, adding the rest of photoinitiator and the rest of solvent into a reaction system in a reaction kettle, heating to 90 ℃, preserving the temperature for 3 hours, adding a silane coupling agent, cooling to 40 ℃, and discharging to obtain a spraying raw material of the wear-resistant release agent layer;

(7) and (3) coating the obtained wear-resistant release agent layer spraying raw material on the laminating layer by using a coating device, and irradiating for 3-5min by using an ultraviolet lamp to obtain a finished product.

Example 4

The utility model provides a from type paper with wear resistance, includes raw paper layer, drenches rete and wear-resisting release agent layer, the surface of raw paper layer has coated in proper order and has drenched rete and wear-resisting release agent layer, wear-resisting release agent layer includes according to part by weight's raw materials: 38 parts of magnesium isopropoxide, 22 parts of acrylic polyol, 5 parts of silica particles, 11 parts of acrylate hard monomer, 0.6 part of thiol chain transfer agent, 1.8 parts of silane coupling agent, 18 parts of polyurethane acrylate oligomer, 9 parts of acrylate reactive diluent, 11 parts of adhesion promoter, 0.9 part of flatting agent, 12 parts of polyphenyl ether, 11 parts of polyethylene glycol, 3.8 parts of cyclomethicone, 5.5 parts of photoinitiator, 2.5 parts of methyltrimethoxysilane, 7.5 parts of ethyl orthosilicate and 115 parts of solvent.

The preparation method of the release paper with the wear-resisting property comprises the following specific steps:

(1) performing film spraying on the raw paper layer to obtain a film spraying layer;

(2) weighing raw materials of the wear-resistant release agent layer according to the parts by weight;

(3) adding magnesium isopropoxide into water, and heating to hydrolyze the magnesium isopropoxide into gel, wherein the heating temperature is 65 ℃;

(4) uniformly mixing acrylic polyol, silica particles, acrylate hard monomers, thiol chain transfer agents, polyurethane acrylate oligomers, acrylate reactive diluents, adhesion promoters, leveling agents, polyphenyl ether, polyethylene glycol, cyclomethicone, methyltrimethoxysilane, tetraethoxysilane and photoinitiators accounting for 38% of the total mass of the photoinitiators to form a mixture;

(5) mixing a mixture accounting for 78% of the total mass of the mixture with a solvent accounting for 45% of the total mass of the mixture, adding the mixture into a reaction kettle, heating to 75 ℃, reacting for 95min, and dropwise adding the rest mixture into a reaction system in the reaction kettle within 5.5 h;

(6) after the dropwise addition is finished, adding the rest of photoinitiator and the rest of solvent into a reaction system in a reaction kettle, heating to 92 ℃, preserving the temperature for 3.5 hours, adding a silane coupling agent, cooling to 45 ℃, and discharging to obtain a spraying raw material of the wear-resistant release agent layer;

(7) and (3) coating the obtained wear-resistant release agent layer spraying raw material on the laminating layer by using a coating device, and irradiating for 4.5min by using an ultraviolet lamp to obtain a finished product.

Example 5

The utility model provides a from type paper with wear resistance, includes raw paper layer, drenches rete and wear-resisting release agent layer, the surface of raw paper layer has coated in proper order and has drenched rete and wear-resisting release agent layer, wear-resisting release agent layer includes according to part by weight's raw materials: 40 parts of magnesium isopropoxide, 25 parts of acrylic polyol, 6 parts of silica particles, 12 parts of acrylate hard monomer, 0.7 part of thiol chain transfer agent, 2 parts of silane coupling agent, 20 parts of polyurethane acrylate oligomer, 10 parts of acrylate reactive diluent, 12 parts of adhesion promoter, 1 part of flatting agent, 15 parts of polyphenyl ether, 12 parts of polyethylene glycol, 4 parts of cyclomethicone, 6 parts of photoinitiator, 3 parts of methyltrimethoxysilane, 8 parts of ethyl orthosilicate and 120 parts of solvent.

The preparation method of the release paper with the wear-resisting property comprises the following specific steps:

(1) performing film spraying on the raw paper layer to obtain a film spraying layer;

(2) weighing raw materials of the wear-resistant release agent layer according to the parts by weight;

(3) adding magnesium isopropoxide into water, and heating to hydrolyze the magnesium isopropoxide into gel, wherein the heating temperature is 70 ℃;

(4) uniformly mixing acrylic polyol, silica particles, acrylate hard monomers, thiol chain transfer agents, polyurethane acrylate oligomers, acrylate reactive diluents, adhesion promoters, flatting agents, polyphenyl ether, polyethylene glycol, cyclomethicone, methyltrimethoxysilane, tetraethoxysilane and photoinitiators accounting for 40% of the total mass of the photoinitiators to form a mixture;

(5) mixing a mixture accounting for 80% of the total mass of the mixture with a solvent accounting for 50% of the total mass of the mixture, adding the mixture into a reaction kettle, heating to 80 ℃, reacting for 100min, and dropwise adding the rest mixture into a reaction system in the reaction kettle within 6 h;

(6) after the dropwise addition is finished, adding the rest of photoinitiator and the rest of solvent into a reaction system in a reaction kettle, heating to 95 ℃, preserving the temperature for 4 hours, adding a silane coupling agent, cooling to 50 ℃, and discharging to obtain a spraying raw material of the wear-resistant release agent layer;

(7) and (3) coating the obtained wear-resistant release agent layer spraying raw material on the laminating layer by using a coating device, and irradiating for 5min by using an ultraviolet lamp to obtain a finished product.

The acrylate reactive diluent is a mixture of a monofunctional reactive diluent, a trifunctional reactive diluent and a multifunctional reactive diluent, and the monofunctional reactive diluent comprises: hydroxyethyl acrylate, vinyl acetate; trifunctional reactive diluents include: trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate; the multifunctional reactive diluent comprises: dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate, and ethoxylated products thereof; the solvent is a mixture of two of toluene, ethyl acetate, isopropanol or butanone; the adhesion promoter is polyacrylate and polyacrylic acid trimethoxy silicone ester copolymer, chlorinated polyester resin or polyfunctional polyurethane acrylate resin; the leveling agent is modified polysiloxane.

According to the invention, the acrylate hard monomer with similar refractive index is adopted for free radical polymerization, so that the transmittance and transparency of the spraying raw material of the wear-resistant release agent layer are ensured, the compactness is improved, the aim of good scratch resistance of the system is fulfilled, the release failure phenomenon caused by the abrasion of the release agent layer is avoided, and the use effect of the release paper is improved.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.