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Ultraviolet curable coating for hardening treatment of plastic surfaces and preparation method of ultraviolet curable coating

A technology of curing coatings and hardening treatment, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve problems such as harm to the health of construction workers, increase of system viscosity, particle dispersion and system compatibility, shrinkage and warpage of coating materials, etc. problem, to achieve the effect of fast curing rate, excellent abrasion resistance and large degree of cross-linking

Active Publication Date: 2014-04-23
FSPG HI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN102643596A discloses a UV curable coating composition for PET substrates and its preparation method. The coating film has good optical properties and hardness (2H / 3H), but uses a large amount of high refractive index monomers and organic solvents, seriously Harm the health of construction workers and lead to shrinkage and warping of coating materials
[0005] Chinese patent CN 103333604A discloses a UV photocurable coating for IML and its preparation method and Chinese patent CN 102786874A discloses that the transparent hardened film for in-mold decoration has obtained good optical properties and wear resistance, but all used Inorganic nanomaterials will inevitably cause problems such as increased viscosity of the system, particle dispersion and system compatibility

Method used

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  • Ultraviolet curable coating for hardening treatment of plastic surfaces and preparation method of ultraviolet curable coating
  • Ultraviolet curable coating for hardening treatment of plastic surfaces and preparation method of ultraviolet curable coating
  • Ultraviolet curable coating for hardening treatment of plastic surfaces and preparation method of ultraviolet curable coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] After dehydrating 100 parts by mass of polyethylene oxide diol with a molecular weight of 1500 under reduced pressure at 110-120°C for 3 hours, the temperature was lowered to 60°C, and 30 parts by mass of diphenylmethane diisocyanate and 0.04 parts by mass of octanoic acid sulfide were added under a nitrogen atmosphere. Tin, react at 60°C for 3h, then add 60 parts by mass of dipentaerythritol pentaacrylate, 10 parts by mass of acetone and 0.1 part by mass of hydroquinone monomethyl ether, react at 60°C for 2h. After the reaction is completed, the acetone is removed under reduced pressure to obtain ten-reactive functional polyurethane acrylate (1a).

[0044] After 100 parts by mass of polycaprolactone diol with a molecular weight of 500 was dehydrated under reduced pressure at 110-120°C for 3 hours, the temperature was lowered to 70°C, and 58 parts by mass of 1,3,3-trimethyl-5- Isocyanato-1-isocyanatomethylcyclohexane and 0.05 parts by mass of dibutyltin dilaurate were r...

Embodiment 2

[0051] After 100 parts by mass of polyoxytetramethylene glycol with a molecular weight of 2000 was dehydrated under reduced pressure at 110-120°C for 3 hours, the temperature was lowered to 70°C, and 20 parts by mass of 1,3,3-trimethyl- 5-isocyanato-1-isocyanatomethylcyclohexane and 0.03 parts by mass of dibutyltin dilaurate were reacted at 70°C for 4h, then 42 parts by mass of dipentaerythritol pentaacrylate, 10 parts by mass of acetone and 0.1 parts by mass of hydroquinone monomethyl ether was reacted at 80°C for 2 hours. After the reaction is completed, the acetone is removed under reduced pressure to obtain ten-reactive functional polyurethane acrylate (2a).

[0052] After dehydrating 100 parts by mass of polybutylene adipate diol with a molecular weight of 1000 under reduced pressure at 110-120°C for 3 hours, the temperature was lowered to 70°C, and 37 parts by mass of dicyclohexylmethane-4,4 '-Diisocyanate and 0.04 parts by mass of dibutyltin dilaurate were reacted at 7...

Embodiment 3

[0058] After dehydrating 100 parts by mass of polyneopentyl glycol adipate diol with a molecular weight of 500 under reduced pressure at 110-120°C for 3 hours, the temperature was lowered to 80°C, and 47 parts by mass of 1,6-hexamethylene was added under a nitrogen atmosphere. Diisocyanate and 0.04 parts by mass of stannous octoate were reacted at 80°C for 3 hours, then 84 parts by mass of dipentaerythritol pentaacrylate, 10 parts by mass of acetone and 0.2 parts by mass of hydroquinone monomethyl ether were added and reacted at 70°C for 4 hours. After the reaction is completed, the acetone is removed under reduced pressure to obtain a ten-reactive functional polyurethane acrylate (3a).

[0059] After dehydrating 100 parts by mass of polycaprolactone diol with a molecular weight of 1500 under reduced pressure at 110-120°C for 3 hours, the temperature was lowered to 60°C, and 21 parts by mass of toluene diisocyanate and 0.03 parts by mass of dibutyltin dilaurate were added under...

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PUM

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Abstract

The invention provides an ultraviolet curable coating for hardening treatment of plastic surfaces. The ultraviolet curable coating comprises the following components in parts by weight: 10-30 parts of ten-reaction-functionality polyurethane acrylate, 15-30 parts of six-reaction-functionality polyurethane acrylate, 20-50 parts of hyper-branched polyurethane acrylate, 5-15 parts of an active diluted monomer, 1-5 parts of a photoinitiator, 0.1-1 part of a leveling agent and 10-30 parts of an organic solvent. The coating provided by the invention has very good constructability, hardness, wear resistance and mechanical properties, and can be applied to hardening treatment of the plastic surfaces. The invention provides a method for preparing the ultraviolet curable coating at the same time.

Description

technical field [0001] The invention relates to the field of ultraviolet curing coatings, in particular to an ultraviolet curing coating for plastic surface hardening treatment and a preparation method thereof. Background technique [0002] Compared with various materials such as metal and glass, plastics have excellent characteristics in terms of low cost, light weight, easy molding and processing, and impact resistance. However, the scratch resistance and surface hardness of plastics are not good, and after long-term use, the plastic surface is easily scratched and affects physical properties such as surface optical properties. For example, plastics such as cellulose triacetate (TAC), polyethylene terephthalate (PET), polymethyl methacrylate (PMMA) and polycarbonate (PC) used in flat panel displays all require surface hardening. [0003] Coating a layer of hardening layer on the plastic surface can be achieved by the following two methods: (1) wet coating a layer of paint...

Claims

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Application Information

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IPC IPC(8): C09D175/14C08G18/67C08J7/04
Inventor 周锰刘新何嘉杰植满溪潘璐
Owner FSPG HI TECH
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