Preparation method of single-component polyurethane-asphalt polishing film

A polishing film and polyurethane technology, applied in the field of preparation of one-component polyurethane-asphalt polishing film, can solve the problems that the polyurethane polishing film cannot meet high-precision polishing, short operation time, poor bonding effect, etc., and achieve improved stability. and production efficiency, thermal stability improvement, reprocessing performance improvement effect

Active Publication Date: 2018-02-09
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a preparation method of a single-component polyurethane-asphalt polishing film, which solves the problem that the existing asphalt polishing film cannot be used for a long time and the polyurethane polishing film cannot meet high-precision polishing problem, and also provides a preparation method of one-component polyurethane, which solves the problems of low molecular weight, high brittleness, poor bonding effect, short operation time, and low boiling point solvent volatilization caused by exothermic reaction, which is harmful to human body, etc.

Method used

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  • Preparation method of single-component polyurethane-asphalt polishing film

Examples

Experimental program
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Effect test

Embodiment 1

[0036] 1) Weigh 6g of polymethylene polyphenyl isocyanate and 5g of TDI-type aromatic isocyanate, remove water respectively and put them into a super clean glove box with water and oxygen content lower than 0.1ppm, and then transfer the above reagents into a sealed Dry container A, then place container A on a shaker to vibrate, mix evenly, and adjust the vibration speed to medium speed;

[0037] 2) Weigh 0.2g 1,4-butanediol, 0.04g trimethylolpropane, 5.5g polyether glycol 1000D, 0.03g polypropylene glycol 2000D, 0.06g polypropylene glycol 3000D, 0.03g triethanolamine, 0.02g diol Dibutyltin laurate and 1g of antifoaming agent, after removing water respectively, put them into a super clean glove box with water and oxygen content lower than 0.1ppm, then put all the above reagents into a closed and dry container B, and put the container B into Vibrate on a shaker and mix evenly;

[0038] 3) Weigh 3.36g dry CeO 2 Polishing powder, 6.5g of acetone and 10g of dichloromethane, and t...

Embodiment 2

[0044] 1) Weigh 6g of polymethylene polyphenyl isocyanate and 6g of TDI type aromatic isocyanate, remove water respectively and put them into a super clean glove box with water and oxygen content lower than 0.1ppm, then put the above reagents into airtight and dry Then put the container A into the shaker to vibrate, mix evenly, and adjust the vibration speed to medium speed;

[0045] 2) Weigh 0.3g 1,4-butanediol, 5g polyether glycol 1000D, 0.05g trimethylolpropane, 0.03g polypropylene glycol 2000D, 0.05g polypropylene glycol 3000D, 0.04g triethanolamine, 0.03g dilaurel Dibutyltin dibutyltin and 1g of antifoaming agent are removed from water and placed in a super clean glove box with water and oxygen content lower than 0.1ppm. Vibrate on the bed to mix evenly;

[0046] 3) Weigh 3.36g dry CeO 2 Polishing powder, 5g acetone, 15g ethyl acetate and 10g dichloromethane, put the above reagents, container A and container B in a super clean glove box with water and oxygen content low...

Embodiment 3

[0052] 1) Weigh 6g of polymethylene polyphenyl isocyanate and 5g of TDI-type aromatic isocyanate, remove water respectively and put them into a super clean glove box with water and oxygen content lower than 0.1ppm, then put the above reagents into airtight and dry Then put the container A into the shaker to vibrate, mix evenly, and adjust the vibration speed to medium speed;

[0053] 2) Weigh 0.5g 1,4-butanediol, 5.5g polyether diol 1000D, 0.06g trimethylolpropane, 0.03g polypropylene glycol 2000D, 0.03g polypropylene glycol 3000D, 0.03g triethanolamine, 0.03g diol Dibutyltin laurate and 1g of defoaming agent are removed and put into a super clean glove box with water and oxygen content lower than 0.1ppm, then put all the above reagents into a sealed and dry container B, and then put container B into Vibrate on a shaker to mix evenly;

[0054] 3) Weigh 3.36g dry CeO 2 Polishing powder, 6g of acetone and 10g of dichloromethane, put the above reagents, container A and containe...

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Abstract

The invention discloses a preparation method of a single-component polyurethane-asphalt polishing film. The method comprises the steps of asphalt modification, curing, finish machining, preparation ofsingle-component polyurethane, spraying onto the surface of an asphalt polishing film by a polyurethane spraying machine for foaming of a polyurethane film and the like. The single-component polyurethane is prepared from components in percentage by mass as follows: 1-5 permillage of a compound catalyst, 40%-60% of a compound solvent, 5%-20% of polishing powder, 1%-3% of a defoaming agent and thebalance of isocyanate and polyol, and the ratio of the molar number of isocyanate functional groups in isocyanate to the molar number of hydroxyl functional groups in polyol is (2-5):1. The polishingfilm is good in adhesion effect, firm in adhesion, not prone to slipping and falling, good in polishing effect, simple to prepare, low in cost, convenient to construct, capable of efficiency polishingoptical modules with complex shapes and high precision requirements and capable of being used for a long time, and the stability and production efficiency in the polishing process can be effectivelyimproved.

Description

technical field [0001] The invention relates to the technical field of optical processing, in particular to a preparation method of a single-component polyurethane-asphalt polishing film. Background technique [0002] Asphalt polishing film combined with polishing liquid can polish various optical glasses, crystal materials and parts with complex polishing structures. The polishing process uses the rheology of the asphalt and the chemical etching effect of the polishing liquid to perform polishing. Skilled operators are required to use this method to throw out a more ideal surface effect (better than 0.3nm). However, due to the rheology of asphalt caused by long-term friction, the surface and subsurface are damaged, and a large amount of polishing debris and polishing powder are adsorbed on the asphalt surface; It meets the requirements of modern society for the automation, simplification and rapidity of product processing. [0003] In the current technology, most optical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D195/00C09D7/65C09D175/08C09D7/61
CPCC08K2003/2213C08L2205/025C08L2205/035C09D175/08C09D195/00C08L57/02C08L93/04C08L91/06
Inventor 邹智挥夏益青刘平李新跃陈建
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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