Anti-friction and anti-deformation transfer frame paper

Abstract

The invention discloses a wear-resistant anti-deformation transfer frame paper, and relates to the technical field of electronic manufacturing, and the wear-resistant anti-deformation transfer frame paper is prepared by the following steps: impregnating a high-density plant fiber paper base in a specially-made organic-inorganic hybrid reinforcing agent, and carrying out calendaring treatment; feeding the wet paper into a drying oven for heating, so that the reinforcing agent and paper fibers are covalently bonded; standing and curing the cured paper to eliminate internal stress; wherein the reinforcing agent is a polyurethane prepolymer containing polyhedral oligomeric silsesquioxane, a fluorine chain and an isocyanate end group, and the preparation process comprises the following steps: synthesizing a polyurethane prepolymer terminated by an isocyanate group, then grafting a polyhedral oligomeric silsesquioxane nanocage structure, and finally carrying out partial termination by using fluorine-containing alcohol, thereby obtaining the final fiber reactivity reinforcing agent. The wear resistance and the size stability are good, the performance retention rate at high temperature is high, the high consistency of product performance in large-scale production is ensured through online feedback control, and the production efficiency and the yield are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic manufacturing, in particular to a transfer frame paper resistant to deformation and abrasion. BACKGROUND

[0002] In the automatic production line of modern electronic products such as mobile phones and tablets, ultra-thin and precise components such as flexible circuit boards and heat sinks need to be temporarily carried, picked and placed, and assembled at high precision and high speed by relying on a special transfer frame paper. This frame paper is an indispensable auxiliary consumable in the process of precise assembly, and its performance is directly related to the efficiency of automatic production and the quality of the final product. The frame paper needs to provide a stable, clean and reliable temporary base for precise electronic components in complex processes, ensuring that the performance of the components and the final assembly precision are not affected after experiencing high-speed movement, precise positioning and heat treatment and other links. Therefore, the surface performance and structural stability of the frame paper are extremely demanding.

[0003] The transfer frame paper used for this purpose in the prior art has two major technical problems, which seriously restrict the yield and production efficiency of high-end electronic manufacturing. First, the abrasion resistance is poor. When the suction nozzle, roller and other components of the automatic equipment are in high-speed and repeated contact and friction, the surface fibers of the traditional paper are easy to fluff and fall off, generating a large amount of paper dust. These micron-sized pollutants can adhere to precise electronic components or circuit boards, causing poor electrical connection, optical performance degradation and other serious defects, directly reducing product yield. Second, the dimensional stability is poor. Traditional paper-based materials are extremely sensitive to changes in temperature and humidity of the production environment, and are prone to stretching, curling or warping deformation. This deformation can cause positioning deviation of the components carried by the frame paper, and in the current micron-level precision automatic assembly, any slight positional deviation can cause product failure. In order to solve these problems, the industry has tried surface film coating or coating schemes, but the paper surface is compounded with a layer of plastic film, which not only has limited adhesion between the coating and the paper base, but also is easy to peel off and form larger pollution particles after friction or bending. Moreover, the huge difference in thermal expansion coefficient between plastic and paper base will cause more serious thermal mismatch warping deformation due to uneven internal stress after heat cycle such as high temperature baking, and the problem has not been fundamentally solved. SUMMARY

[0004] The purpose of the present application is to provide a transfer frame paper resistant to deformation and abrasion, which solves the problems in the background art.

[0005] To solve the above technical problems, the present application provides a preparation method of a transfer frame paper resistant to deformation and abrasion, comprising the following steps: The high-density plant fiber paper base is passed through an impregnation tank at a set speed, the tank containing a solution of fiber-reactive organic-inorganic hybrid reinforcing agent, so that the paper base fully absorbs the solution, and then the wet paper impregnated with the reinforcing agent is subjected to calendering treatment by a roller to obtain the wet paper impregnated with the reinforcing agent; The wet paper impregnated with the reinforcing agent is sent into an oven for heating and curing, and under the heating condition, the reinforcing agent covalently bonds with the hydroxyl groups on the surface of the paper fibers to form an integrated reinforcing network; The cured paper is allowed to stand in a specific temperature and humidity environment for maturation to release internal stress, and a deformation-resistant transfer frame paper is obtained. The fiber-reactive organic-inorganic hybrid reinforcing agent is a polyurethane prepolymer containing cage silsesquioxane, fluorine chain and isocyanate end groups, and the preparation method comprises the following steps: Under nitrogen protection, toluene diisocyanate is dissolved in anhydrous solvent, a solution of polycaprolactone diol is slowly added dropwise, a catalyst is added, and then the reaction is carried out under reflux at elevated temperature to prepare an isocyanate-terminated polycaprolactone polyurethane prepolymer solution with isocyanate groups at both ends; The reaction temperature is maintained, and a solution of hydroxyethyl isobutyl cage silsesquioxane is slowly added dropwise to the prepolymer solution, and after the addition is completed, the heat preservation reaction is continued to graft the cage silsesquioxane nanocage structure to the polyurethane chain; The reaction temperature is maintained, and a solution of perfluorooctyl alcohol is slowly added dropwise to the reaction system, and the heat preservation reaction is continued to allow part of the isocyanate end groups to be capped with a fluorine chain, and after the reaction is completed, the solution of the fiber-reactive organic-inorganic hybrid reinforcing agent is obtained after cooling.

[0006] Preferably, in the preparation of the fiber-reactive organic-inorganic hybrid reinforcing agent, the molar ratio of toluene diisocyanate to polycaprolactone diol is 2:1; and the molar ratio of hydroxyethyl isobutyl cage silsesquioxane to perfluorooctyl alcohol is 1:1.

[0007] Preferably, the heating and curing step adopts a double-ladder gradient curing process, which specifically comprises: First-stage curing: the wet paper impregnated with the reinforcing agent is subjected to heat preservation treatment at a temperature of 100-120°C for 3-5 minutes to allow the isocyanate groups in the reinforcing agent to react with the hydroxyl groups of the paper fibers to form a polyurethane reinforcing network; Second-stage curing: the paper subjected to the first-stage curing is subjected to further heat treatment at a temperature of 140-160°C for 1-3 minutes to form a crosslinked network that is more stable in thermodynamics.

[0008] Preferably, a solution of the fiber-reactive organic-inorganic hybrid reinforcing agent is additionally added with a complex thermal stabilizer solution, the amount of which is 3-8% by weight of the solid content of the polyurethane prepolymer; the complex thermal stabilizer is a hindered phenol functionalized silane coupling agent, which undergoes hydrolysis and condensation reaction under high temperature conditions of the second stage curing to form a heat-resistant siloxane network.

[0009] Preferably, the preparation method of the anti-friction and deformation-resistant transfer frame paper of the hindered phenol functionalized silane coupling agent is as follows: under the protection of nitrogen, 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid methyl ester and 3-aminopropyl triethoxysilane are added to anhydrous solvent in a molar ratio of 1:1.05, heated to 140°C for reflux reaction, and after the completion of the amidation reaction, the solvent is removed to obtain the product.

[0010] Preferably, the solution of the fiber-reactive organic-inorganic hybrid reinforcing agent is designed as an A / B two-component system: The A component solution: the hydroxyl-containing components, including polycaprolactone diol, hydroxyethyl isobutyl cage silsesquioxane and perfluoro octyl alcohol, are pre-dissolved in the solvent; The B component solution: toluene diisocyanate and a catalyst are dissolved in the solvent; Before the impregnation step, the A and B component solutions are pumped into a static mixer through high-precision metering pumps according to the preset stoichiometric ratio, and immediately mixed uniformly within 10-15 seconds, and then used for impregnation of the paper base.

[0011] Preferably, it also includes an online viscosity feedback control step: an online rotary viscometer is installed in the impregnation tank to monitor the viscosity of the mixed reinforcing agent solution in real time; when the monitored viscosity deviates from the target process viscosity value by ±5%, the central PLC control system automatically adjusts the pumping rate of the B component solution or adjusts the temperature of the impregnation tank to restore the solution viscosity to the target range.

[0012] Preferably, the thickness of the high-density plant fiber paper base is 75µm; in the impregnation-calendering step, the running speed of the paper base is 10 meters / minute, and the gap of the calendering roller is controlled to be 80µm; the standing curing condition is to stand for 24 hours at room temperature in an environment with a humidity of 50%RH.

[0013] An anti-friction and deformation-resistant transfer frame paper is prepared by the above-mentioned preparation method of the anti-friction and deformation-resistant transfer frame paper.

[0014] Compared with the prior art, the present application has the following beneficial effects: By designing a fiber-reactive reinforcing agent, it penetrates into the paper fiber network and undergoes in-situ chemical reaction, forming a firm covalent bond with the fiber surface. This molecular-level integrated structure fundamentally eliminates the peeling and falling problems that may occur in traditional coating layers. The composite surface formed has extremely high hardness and wear resistance, effectively inhibiting the generation of paper dust even under long-term and high-speed mechanical friction in the automated production line, ensuring the cleanliness of precision electronic components during transfer and mounting, and significantly improving product yield.

[0015] The construction of the reinforcing network effectively binds the movement of paper fibers in a wet and hot environment, greatly improving the dimensional stability of the transfer frame paper. Even under the temperature and humidity fluctuations common in production environments or multiple high-temperature baking cycles in multilayer circuit board manufacturing, the frame paper can still maintain excellent flatness and precise geometric dimensions, effectively avoiding the positioning deviation problems caused by paper stretching or warping deformation, and ensuring the precision requirements of micron-level automated mounting.

[0016] By designing the reinforcing agent as a ready-to-mix two-component system and combining it with an online viscosity feedback control system, precise closed-loop control of the production process is achieved, fundamentally solving the performance fluctuation problem caused by pre-reaction during storage and use of single-component reinforcing agents. This ensures that every inch of frame paper produced from start to finish in high-speed, continuous mass production has highly consistent physical properties and chemical states, greatly improving product batch stability and production efficiency, and meeting the stringent requirements of high-end electronic manufacturing for material stability. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be described below. Obviously, the described embodiments are only a part of the embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0018] Embodiment 1 The embodiment provides a preparation method of a wear-resistant and deformation-resistant transfer frame paper; the core of the method is to provide and use a solution of a fiber-reactive organic-inorganic hybrid reinforcing agent, the reinforcing agent is a polyurethane prepolymer containing a cage silsesquioxane, a fluorine chain and an isocyanate end group; the preparation process is as follows: under the protection of nitrogen, toluene diisocyanate and polycaprolactone diol are dissolved in anhydrous ethyl acetate in a molar ratio of 2:1, dibutyltin dilaurate is added as a catalyst, the addition amount of the catalyst is 0.05% of the total mass of the polycaprolactone diol and the toluene diisocyanate, after the catalyst is added, the temperature is increased to 75°C and the reaction is carried out under reflux for 3 hours, and the isocyanate group-terminated polycaprolactone polyurethane prepolymer solution is prepared; then, the solution is added dropwise with a solution of hydroxyethyl isobutyl cage silsesquioxane, and the reaction is carried out for 2 hours; finally, the solution is added dropwise with a solution of perfluorooctyl alcohol, and the reaction is continued for 1.5 hours, wherein the molar ratio of the hydroxyethyl isobutyl cage silsesquioxane to the perfluorooctyl alcohol is 1:1, and the reinforcing agent solution is obtained after the reaction is completed and cooling. The specific preparation process includes the following steps: a high-density plant fiber paper base with a thickness of 75µm is passed through an impregnation tank containing the reinforcing agent solution at a speed of 10 meters / minute, so that the paper base is fully impregnated, then the impregnated paper base is immediately subjected to calendering treatment by passing through a calendering roller with a gap of 80µm, and the wet paper impregnated with the reinforcing agent is obtained; then, the wet paper is sent into an oven at 110°C and is heated and cured for 5 minutes, under the heating condition, the reinforcing agent and the hydroxyl groups on the surface of the paper fibers are covalently bonded to form an integrated reinforcing network; finally, the cured paper is placed in a room temperature environment with a humidity of 50% RH for 24 hours for aging and curing, so that internal stress is released, and finally the finished product is obtained. The transfer frame paper prepared by the method has a significantly improved surface wear resistance compared with an untreated paper base, because the reinforcing agent and the fibers form a firm covalent bond instead of a simple physical adhesion; when the FPC and other precision electronic components are taken and placed at a high speed in an automatic production line, the paper dust generated due to friction can be effectively reduced, so that the pollution to the components is avoided and the product yield is improved.

[0019] Embodiment 2 The embodiment provides a preparation method of a wear-resistant and deformation-resistant transfer frame paper; the preparation and use of a fiber-reactive organic-inorganic hybrid reinforcing agent used in the method are basically the same as those in Embodiment 1, wherein the molar ratio of toluene diisocyanate to polycaprolactone diol is 2:1, and the molar ratio of hydroxyethyl isobutyl cage silsesquioxane to perfluorooctyl alcohol is 1:1. The preparation method is characterized in that the heat curing step adopts a double gradient curing process; specifically, first, first-stage curing is performed, and the wet paper impregnated with the reinforcing agent is subjected to heat preservation treatment at a temperature of 100°C for 5 minutes, which aims to preliminarily react the isocyanate groups in the reinforcing agent with the hydroxyl groups of the paper fibers to form a basic polyurethane reinforcing network; then, second-stage curing is performed, and the paper subjected to the first-stage curing is subjected to deep heat treatment at a temperature of 140°C for 3 minutes, which aims to form a more thermodynamically stable crosslinked network structure; the remaining process parameters are consistent with those of example 1. The double gradient curing process ensures sufficient bonding of the reinforcing agent and the fibers through mild first-stage curing, and improves the stability of the crosslinked network through high-temperature second-stage curing; the prepared transfer frame paper not only has wear resistance, but also has better dimensional stability when subjected to changes in temperature and humidity in the production environment, which can effectively prevent positioning deviation of components in the high-speed mounting process caused by paper expansion and deformation.

[0020] Example 3 The embodiment provides a preparation method of wear-resistant and deformation-resistant transfer frame paper; the method is characterized in that a composite thermal stabilizer solution is additionally added to a solution of a fiber-reactive organic-inorganic hybrid reinforcing agent; the composite thermal stabilizer is a hindered phenol functionalized silane coupling agent, and the preparation method is as follows: under the protection of nitrogen, 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate and 3-aminopropyl triethoxysilane are added to anhydrous xylene in a molar ratio of 1:1.05, heated to 140°C for reflux reaction, and after completion, the solvent is removed to obtain the product; the addition amount of the composite thermal stabilizer solution is set to be 3% by weight of the solid content of the polyurethane prepolymer; The double gradient curing process parameters of the embodiment are set as follows: the first-stage curing is performed at 110°C for 4 minutes; and the second-stage curing is performed at 150°C for 2 minutes; under the high-temperature condition of the second-stage curing, the hindered phenol functionalized silane coupling agent will undergo hydrolysis and condensation reaction to form a heat-resistant siloxane network, and form an interpenetrating structure with the polyurethane network, further enhancing the performance of the material; Due to the introduction of the composite thermal stabilizer and the matching of the corresponding double gradient curing process, the transfer frame paper prepared in the embodiment has excellent thermal stability; in the electronic product manufacturing process that needs to undergo multiple high-temperature baking cycles, for example, in the manufacturing scene of a multilayer circuit board, the wear resistance and dimensional stability of the frame paper decay little, ensuring long-term use reliability under harsh working conditions.

[0021] Example 4 The embodiment provides a preparation method of a wear-resistant and deformation-resistant transfer frame paper; in order to adapt to the requirement of high-speed continuous production, a solution of a fiber reactive organic-inorganic hybrid reinforcing agent is designed as an A / B two-component system; the A component solution comprises all hydroxyl-containing components, i.e., polycaprolactone diol, hydroxyethyl isobutyl cage silsesquioxane, perfluorooctyl alcohol and a hindered phenol functional silane coupling agent added at 5% by weight of a prepolymer solid content, and is dissolved in a solvent in advance; the B component solution comprises toluene diisocyanate and dibutyltin dilaurate as a catalyst, wherein the catalyst is dissolved in anhydrous solvent, and the mass of the catalyst is 0.2% of the mass of the toluene diisocyanate; before the impregnation step, the A and B component solutions are pumped into a static mixer through a high-precision metering pump at a preset stoichiometric ratio, and are immediately mixed uniformly within 10 seconds and then used for impregnation of the paper base. The two-step gradient curing process parameters of the embodiment are set as follows: the first step is carried out at 120°C for 3 minutes; and the second step is carried out at 160°C for 1 minute. The A / B two-component system design fundamentally solves the viscosity change problem of the single-component reinforcing agent caused by pre-reaction during storage and use through the "ready-mix" mode; this ensures that the reinforcing agent chemical state and physical properties absorbed by the paper from beginning to end are highly consistent in high-speed continuous production, and the batch stability and production efficiency of the product are greatly improved.

[0022] Embodiment 5 The embodiment provides a preparation method of a wear-resistant and deformation-resistant transfer frame paper; the method further introduces an online viscosity feedback control step on the basis of the embodiment 4 to realize closed-loop precise control of the production process; an online rotary viscometer is installed in the impregnation tank to monitor the viscosity of the reinforcing agent solution after mixing of the A / B components in real time; when the monitored viscosity deviates from the target process viscosity value (set as 180 mPa·s) ±5%, the central PLC control system automatically adjusts the pumping rate of the B component solution, so that the solution viscosity quickly returns to the target range. The composite heat stabilizer addition amount of the embodiment is 8% by weight of the polyurethane prepolymer solid content, and the two-step gradient curing process parameters are as follows: the first step is carried out at 115°C for 4 minutes, and the second step is carried out at 155°C for 2 minutes; the remaining process parameters are consistent with those of the embodiment 4. By constructing an online viscosity-ratio feedback control system, the preparation method of the embodiment realizes dynamic and accurate regulation of the reinforcing agent reactivity; this ensures that even in the case of environmental temperature fluctuation or slight batch difference of raw materials, the performance (such as penetration depth, solid content and wear resistance) of the final product can be maintained at a very high level and consistency, fully meeting the stringent requirements of the high-end electronic manufacturing field on material stability.

[0023] Comparative Example 1 The same high-density plant fiber paper base as in Example 1 was used, but without any reinforcing treatment.

[0024] Comparative Example 2 The same high-density plant fiber paper base as in Example 1 was used, and a layer of PE film was applied on its surface, which is a common solution in the prior art.

[0025] Comparative Example 3 The same preparation method and process parameters as in Example 1 were used, but the hydroxyethyl isobutyl cage silsesquioxane component was not added when preparing the fiber-reactive organic-inorganic hybrid reinforcing agent, and the molar ratios of the remaining components were adjusted accordingly.

[0026] Comparative Example 4 The same materials (including hindered phenol functionalized silane coupling agent) as in Example 3 were used, but a single-stage curing process was used, i.e., direct heat treatment at 150°C for 5 minutes, instead of double-stage gradient curing.

[0027] Performance Test The samples prepared in Examples 1-5 and Comparative Examples 1-4 above were subjected to performance tests, and the specific test methods and results are as follows: Wear resistance test: According to the Taber wear resistance test standard, a CS-10F grinding wheel was used to test the wear resistance of the sample under a load of 1000g for 500 revolutions, and the mass loss (mg) of the sample was recorded; Dimensional stability test: The sample was cut into a standard size of 200mm x 200mm and placed in a high temperature and high humidity environment of 85°C and 85% RH for 24 hours. The dimensional change rate (%) of the length and width of the sample was measured; Performance retention rate test after high temperature cycling: The sample was subjected to 1 hour of heat treatment in an oven at 150°C, cooled, and repeated for 5 cycles. Then the wear resistance (mass loss) was tested again, and the ratio to the initial mass loss was calculated to evaluate the performance retention rate.

[0028] Test Result Summary Table

[0029] Result Analysis From the above table data, we can see that: Wear resistance comparison: The mass loss of Examples 1-5 is significantly lower than that of Comparative Examples 1, 2 and 3; this proves that the covalent bonding structure of the fiber-reactive organic-inorganic hybrid reinforcing agent with the fibers, especially the introduction of the cage silsesquioxane nano wear-resistant unit, is the key to improving wear resistance; Example 5 has the best effect, with a mass loss of only 2.8mg; The dimensional stability comparison: the dimensional change rates of examples 1-5 are much lower than those of comparative examples 1 and 2, showing the effective binding effect of the reinforcing network on the fibers; in particular, examples 2-5 which introduce the double gradient curing process, the dimensional stability is further improved, all reaching the level of 0.06% or better, effectively solving the thermal mismatch warping problem of the traditional scheme; Thermal stability comparison: by comparing the wear resistance data after high temperature cycle, it can be clearly seen that examples 3, 4 and 5 which introduce composite thermal stabilizer and adopt double-stage curing process, their performance retention ability is far superior to other samples; comparative example 4, although it adds stabilizer, but does not use double-stage curing, its performance attenuation after high temperature is obvious, which reversely proves the necessity and innovation of the double-stage curing process in the present application for activating the stabilizer and forming a heat-resistant silicone network; example 5 has the most superior comprehensive performance, showing the reliability of the complete technical solution of the present application in dealing with extreme working conditions.

[0030] The above is only the preferred embodiment of the present application, not other forms of the present application, any skilled in the art may use the above disclosed technical content to make changes or modifications as equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made on the basis of the technical essence of the present application to the above examples without departing from the technical solution content of the present application, still belongs to the protection scope of the technical solution of the present application.

Claims

1. A method of making a wear-resistant, distortion-resistant transfer frame paper, characterized by, The method comprises the following steps: high-density plant fiber paper base is passed through an impregnation tank at a set speed, the tank containing a solution of fiber-reactive organic-inorganic hybrid reinforcing agent, the paper base is allowed to fully absorb the solution, and then is subjected to calendering treatment by a calender roller to obtain wet paper impregnated with the reinforcing agent; the wet paper impregnated with the reinforcing agent is sent into an oven for heat curing, under the heat curing condition, the reinforcing agent is covalently bonded to the hydroxyl groups on the surface of the paper fibers to form an integrated reinforcing network; the cured paper is allowed to stand in a specific temperature and humidity environment for aging, and internal stress is released to obtain a wear-resistant and deformation-resistant transfer frame paper; the fiber-reactive organic-inorganic hybrid reinforcing agent is a polyurethane prepolymer containing cage silsesquioxane, fluorine chains and isocyanate end groups, and the preparation method comprises the following steps: under the protection of nitrogen, toluene diisocyanate is dissolved in anhydrous solvent, a solution of polycaprolactone diol is slowly added dropwise, a catalyst is added, and then the reaction is carried out under reflux at an elevated temperature to obtain an isocyanate group-terminated polycaprolactone polyurethane prepolymer solution with isocyanate groups at both ends; the reaction temperature is maintained, a solution of hydroxyethyl isobutyl cage silsesquioxane is slowly added dropwise into the prepolymer solution, and after the addition is completed, the heat preservation reaction is continued to graft the cage silsesquioxane nanocage structure to the polyurethane chain; the reaction temperature is maintained, a solution of perfluorooctyl alcohol is slowly added dropwise into the reaction system, and the heat preservation reaction is continued to allow part of the isocyanate end groups to be capped by fluorine chains, and after the reaction is completed, the solution is cooled to obtain a solution of the fiber-reactive organic-inorganic hybrid reinforcing agent.

2. A method of making a wear resistant, deformation resistant transfer frame paper according to claim 1, characterized in that, In the preparation of the fiber-reactive organic-inorganic hybrid reinforcing agent, the molar ratio of toluene diisocyanate to polycaprolactone diol is 2:1, and the molar ratio of hydroxyethyl isobutyl cage silsesquioxane to perfluorooctyl alcohol is 1:

1.

3. A method of making a wear resistant, deformation resistant transfer frame paper according to claim 1, characterized in that, The heat curing step adopts a double-ladder gradient curing process, specifically comprising the following steps: first-stage curing: the wet paper impregnated with the reinforcing agent is subjected to heat preservation treatment at a temperature of 100-120°C for 3-5 minutes to allow the isocyanate groups in the reinforcing agent to react with the hydroxyl groups of the paper fibers to form a polyurethane reinforcing network; second-stage curing: the paper subjected to the first-stage curing is subjected to deep heat treatment at a temperature of 140-160°C for 1-3 minutes to form a more thermodynamically stable crosslinked network.

4. A method of making a wear resistant, deformation resistant transfer frame paper according to claim 3, characterized in that, The solution of the fiber-reactive organic-inorganic hybrid reinforcing agent additionally contains a composite heat stabilizer solution, and the addition amount is 3-8% by weight based on the solid content of the polyurethane prepolymer; the composite heat stabilizer is a hindered phenol functionalized silane coupling agent, which is hydrolyzed and condensed under the high temperature condition of the second-stage curing to form a heat-resistant siloxane network.

5. A method of making a wear resistant, deformation resistant transfer frame paper according to claim 4, characterized in that, The preparation method of the wear-resistant and deformation-resistant transfer frame paper using the hindered phenol functionalized silane coupling agent comprises the following steps:

6. A method of making a wear resistant, deformation resistant transfer frame paper according to claim 1, characterized in that, under the protection of nitrogen, 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid methyl ester and 3-aminopropyl triethoxysilane are added to an anhydrous solvent in a molar ratio of 1:1.05, heated to 140°C for reflux reaction, and after the amide reaction is completed, the solvent is removed to obtain the product. The solution of the fiber-reactive organic-inorganic hybrid reinforcing agent is designed as an A / B two-component system: A component solution: the hydroxyl-containing components, including polycaprolactone diol, hydroxyethyl isobutyl cage silsesquioxane and perfluorooctyl alcohol, were pre-dissolved in the solvent; B component solution: toluene diisocyanate and catalyst were dissolved in the solvent; Before the impregnation step, the A and B component solutions were pumped into a static mixer by high-precision metering pumps according to the preset stoichiometric ratio, and immediately mixed uniformly within 10-15 seconds, and then immediately used for impregnation of the paper base.

7. A method of making a wear resistant, deformation resistant transfer frame paper according to claim 6, wherein, It also includes an online viscosity feedback control step: an online rotary viscometer is installed in the impregnation tank to monitor the viscosity of the enhancer solution after mixing in real time; when the monitored viscosity deviates from the target process viscosity value by ±5%, the central PLC control system automatically adjusts the pumping rate of the B component solution or adjusts the temperature of the impregnation tank to restore the solution viscosity to the target range.

8. A method of making a wear resistant, deformation resistant transfer frame paper according to claim 1, wherein, The thickness of the high-density plant fiber paper base is 75µm; in the impregnation-calendering step, the running speed of the paper base is 10 meters / minute, and the gap of the calendering roller is controlled at 80µm; the standing curing condition is to stand for 24 hours at room temperature in an environment with 50%RH humidity.

9. A wear resistant, anti-deformation transfer frame paper, characterized by, A kind of anti-abrasion deformation transfer frame paper prepared by the preparation method of claim 1-8. A kind of anti-abrasion deformation transfer frame paper prepared by the preparation method of claim 1-8.

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