UV-cured ultrasonic spraying hardening liquid and preparation method thereof

A hardening liquid and ultrasonic technology, applied in the field of hardening liquid, can solve the problems of low VOC emission, oily board area and thick edges, large VOC emission, etc., achieve good wear resistance, moderate drying speed, and reduce VOC The effect of the emissions

Active Publication Date: 2021-08-17
GUANGDONG HEYGEY LIGHT CURING MATERIALS
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  • Application Information

AI Technical Summary

Problems solved by technology

It is usually produced by high-pressure air spraying or fast-speed spraying of UV hardening fluid. The characteristic of high-pressure air spraying is that it can be applied evenly without thick edges for workpieces with convex edges. The disadvantage is that spraying is wasteful and hardening Large liquid volume, large VOC emissions, currently rarely used in the mobile phone industry
At present, the mainstream is flow coating, which has the advantages of effectively recovering hardening fluid, high utilization rate, low cost, and low VOC emissions, but the disadvantage is that it can be well applied to flat substrates, and oil accumulation is easy to occur on boards with convex and concave effects. And bad phenomenon such as thick edge

Method used

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  • UV-cured ultrasonic spraying hardening liquid and preparation method thereof
  • UV-cured ultrasonic spraying hardening liquid and preparation method thereof
  • UV-cured ultrasonic spraying hardening liquid and preparation method thereof

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preparation example Construction

[0025] Preparation of organic-inorganic hybrid resin:

[0026] (1) Add 25kg of ZS-30 silica sol into the reaction kettle, stir and heat up to 60°C, and drop in 25kg of 3-(methacryloyloxy)propyltrimethoxysilane at a stirring speed of 400r / min, Insulated for 1h to prepare modified silica sol liquid;

[0027] (2) Add 10kg of pentaerythritol triacrylate (PETA) and 40kg of 6145-100 to the reaction kettle, stir and heat up to 60°C, and add the modified silica sol prepared in step (1) at a stirring speed of 600r / min Liquid, heat preservation for 1h to obtain organic-inorganic hybrid resin.

[0028] The preparation method of hardening liquid is: under the environment of using yellow light and completely cutting off ultraviolet light, mix the active monomer, photoinitiator and solvent, stir at the speed of 200r / min until dissolved, and add organic and inorganic impurities in sequence after dissolution. The resin, high-functionality urethane acrylate and additives are stirred at a spe...

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Abstract

The invention belongs to the technical field of hardening liquid, and particularly relates to UV-cured ultrasonic spraying hardening liquid and a preparation method thereof.The hardening liquid is prepared from, by mass, 25%-35% of organic-inorganic hybrid resin, 10%-20% of high-functionality polyurethane acrylate, 3%-7% of active monomers, 1%-3% of photoinitiators, 0.1%-0.5% of auxiliaries and the balance of solvent. According to the UV-cured ultrasonic spraying hardening liquid, the organic-inorganic hybrid resin and the high-functionality polyurethane acrylate serve as matrix resin, the hardening liquid is low in viscosity and can be used for continuous atomization spraying of a micropore ultrasonic atomization sheet, liquid drops with uniform and small particle sizes are generated, and a film layer obtained through spraying is high in hardness and good in wear resistance; and the UV-cured ultrasonic spraying hardening liquid is very suitable for production of mobile phone backboards.

Description

technical field [0001] The invention belongs to the technical field of hardening liquid, and in particular relates to a UV-cured ultrasonic spraying hardening liquid and a preparation method thereof. Background technique [0002] With the popularization of smart phones, the mobile phone backplane made of composite material is an important part of the mobile phone, and it is an indispensable part of the mobile phone production. For mobile phones with higher performance, the backplane must be processed accordingly. High wear resistance, acid and alkali resistance, high fullness and gloss. It is usually produced by high-pressure air spraying or fast-speed spraying of UV hardening fluid. The characteristic of high-pressure air spraying is that it can be applied evenly without thick edges for workpieces with convex edges. The disadvantage is that spraying is wasteful and hardening The liquid volume is large and the VOC emission is large, so it is rarely used in the mobile phone ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/62C09D7/65C09D7/20
CPCC09D175/14C09D7/62C09D7/65C09D7/20C08L2205/025C08L75/14C08L67/00C08L71/00C08K9/06C08K3/36
Inventor 彭健华蒋卫华吴勇冯敏乐
Owner GUANGDONG HEYGEY LIGHT CURING MATERIALS
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