Ultraviolet curing coating with enhanced wear resistance and preparation method thereof

A technology of curing coatings and ultraviolet light, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of affecting optical properties, weak wear resistance, poor yellowing resistance of epoxy acrylate, etc., to improve dispersion and wetness Wetting property, effect of improving wear resistance

Pending Publication Date: 2021-06-11
广州四面体新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For this reason, Chinese patent CN106433411A discloses anti-fingerprint coating liquid and anti-fingerprint hardened film, and its main resin is fluorine-containing acrylic prepolymer and epoxy acrylic resin, which can improve the smoothness and wear resistance of the anti-fingerprint coating surface , but due to weak Van der Waals forces such as hydrogen bonds in the molecular structure of acrylate, its wear resistance is still relatively weak, and the yellowing resistance of the epoxy acrylate used in it is not good, which affects its optical properties; and Chinese patent CN107603462A discloses A UV-curable anti-fingerprint coating and its preparation and use method, which include multifunctional polyurethane acrylate, epoxy acrylate, multifunctional acrylic monomer, reactive diluent, photoinitiator and auxiliary agent, which have Good hydrophobic and oleophobic properties, scratch resistance, adhesion and gloss, but the polyurethane acrylate functionality in the system is 3-6, which is not enough to produce enough cross-linked network to obtain excellent wear resistance. In addition The aromatic epoxy resin contained in the system has poor yellowing resistance

Method used

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  • Ultraviolet curing coating with enhanced wear resistance and preparation method thereof

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[0029] A kind of preparation method of described UV-curable coating that enhances wear resistance comprises the steps:

[0030] Step 1, preparation of silane coupling agent modified nano-alumina: 10 parts by mass of nano-alumina, 200-600 parts by mass of ethanol, 5-15 parts by mass of water and 0.4-1 parts by mass of γ-(methyl Add acryloyloxy)propyltrimethoxysilane to the designated container and mix evenly, then, reflux reaction in a water bath at 55°C for 8h to 24h, after the reaction is stopped, the temperature is lowered to room temperature, and the product is centrifuged and washed and drying to obtain silane coupling agent modified nano-alumina;

[0031] Step 2. Prepare raw materials: including 10-60 parts by mass of fluorine-modified urethane acrylate, 0-30 parts by mass of urethane acrylate, and 0.4-1.6 parts by mass of the silane coupling agent-modified nano-alumina prepared in step 1 , 1.6-3.6 parts by mass of photoinitiator, 0.2-0.6 parts by mass of leveling agent,...

Embodiment 1

[0035] A kind of UV curable coating with enhanced wear resistance and preparation method thereof:

[0036] A UV curable coating with enhanced wear resistance is composed of the following components: 60 parts by mass of 15-functionality fluorine-modified polyurethane acrylate, 1.2 parts by mass of silane coupling agent modified nano-alumina, 3.6 parts by mass of light Initiator (1-hydroxy-cyclohexylacetone), 0.2 parts by mass of leveling agent (BYK3505), 21 parts by mass of butyl acetate and 14 parts by mass of methyl isobutyl ketone.

[0037]A preparation method of UV-curable coating with enhanced wear resistance: 60 parts by mass of 15-functionality fluorine-modified polyurethane acrylate, 1.2 parts by mass of silane coupling agent modified nano-alumina, 3.6 parts by mass of photoinitiated Agent (1-hydroxy-cyclohexylacetone), 0.2 parts by mass of leveling agent (BYK3505), 21 parts by mass of butyl acetate and 14 parts by mass of methyl isobutyl ketone were added to the design...

Embodiment 2

[0040] A kind of UV curable coating with enhanced wear resistance and preparation method thereof:

[0041] A UV curable coating with enhanced wear resistance consists of the following components: 30 parts by mass of 6-functionality fluorine-modified polyurethane acrylate, 30 parts by mass of 10-functionality polyurethane acrylate (Sartomer CN9013), 0.9 mass parts Parts of silane coupling agent modified nano-alumina, 2.4 parts by mass of photoinitiator (1-hydroxy-cyclohexyl acetone), 1.6 parts by mass of photoinitiator (benzophenone), 0.6 parts by mass of leveling agent (BYK3500), 18 parts by mass of butyl acetate, 30 parts by mass of methyl isobutyl ketone, and 12 parts by mass of propylene glycol methyl ether.

[0042] A preparation method of UV-curable coating with enhanced wear resistance: 30 parts by mass of 6-functionality fluorine-modified polyurethane acrylate, 30 parts by mass of 10-functionality polyurethane acrylate (Sartomer CN9013), 0.9 parts by mass The silane co...

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Abstract

The invention discloses an ultraviolet curing coating with enhanced wear resistance and a preparation method thereof. The ultraviolet curing coating with enhanced wear resistance comprises the following components in parts by mass: 10 to 60 parts of fluorine modified polyurethane acrylate, 0 to 30 parts of polyurethane acrylate, 0.4 to 1.6 parts of silane coupling agent modified nano aluminum oxide, 1.6 to 3.6 parts of a photoinitiator, 0.2 to 0.6 part of a flatting agent and 35 to 60 parts of a solvent. Therefore, the nano aluminum oxide is modified by the silane coupling agent in the components, the nano aluminum oxide is firstly modified by the silane coupling agent to introduce a reaction functional group, and then the reaction functional group is introduced into an ultraviolet curing coating system to participate in a polymerization cross-linking reaction, so that the dispersion wettability of the nano aluminum oxide in the coating system is improved; the wear resistance, the scratch resistance and the storage stability of the coating system are also obviously improved.

Description

technical field [0001] The invention relates to the technology in the field of ultraviolet curing coatings, in particular to an ultraviolet curing coating with enhanced wear resistance and a preparation method thereof. Background technique [0002] The screens of consumer electronic products such as smartphones are developing towards 2.5D, 3D, curved surfaces and full screens. The glass cover of the screen is easy to be scratched and damaged when dropped in daily use. At present, when smartphones leave the factory, a layer of mobile phone protective film is pasted on the glass screen to reduce scratches on the screen during use. Among them, the simplest product structure of mobile phone protective film is anti-fingerprint hardened layer, plastic base film and pressure-sensitive adhesive layer. Component materials will be designed, such as plastic base film has polyethylene terephthalate (PET) film, thermoplastic polyurethane (TPU) film or polycarbonate (PC) film, etc., pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/62
CPCC08K2003/2227C08K2201/011C08L2205/025C09D175/14C09D7/62C08L75/14C08K9/06C08K3/22
Inventor 刘新刘奕燎方彬宗
Owner 广州四面体新材料科技有限公司
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