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UV resistant agent used for acrylic coating and preparation method and application thereof

An anti-ultraviolet agent, acrylic technology, applied in the direction of coating, etc., can solve the problems of decreased anti-ultraviolet ability, toxicity, limited stability, etc., and achieve the effect of improving anti-ultraviolet performance

Active Publication Date: 2010-01-20
HUIZHOU PERFECT CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, organic UV absorbers have their own limitations: First, their own stability is limited. During long-term use, with the decomposition and volatilization of the absorber molecules, the product’s anti-ultraviolet ability decreases, and it is difficult to maintain high photooxidation resistance for a long time; second, the absorber itself or Its decomposition products have certain toxicity, which limits the scope of use
But CeO 2 Has high catalytic oxidation activity, which is not conducive to the stability of organic matter

Method used

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  • UV resistant agent used for acrylic coating and preparation method and application thereof
  • UV resistant agent used for acrylic coating and preparation method and application thereof
  • UV resistant agent used for acrylic coating and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0019] Example 1: Weighing CaCl with a molar ratio of 0.03:0.97 2 and Ce(NO 3 ) 3 ·6H 2 O was dissolved in distilled water and added dropwise to the carboxymethyl cellulose solution stirred at a constant speed. After the dropwise addition, at the reaction temperature of 25° C., ultrasonic reaction was performed for 2 h. Ca 0.03 -Ce 0.97 o 2 . Two solutions A and B are prepared, and the A solution is ultrasonically 30min, so that the nanoparticles can be uniformly dispersed in the solution. Then, uniformly and slowly add the B solution into the A solution dropwise, and ultrasonically hydrolyze. After the reaction, aging, suction filtration, washing, and vacuum drying to obtain the coated sample Ca 0.03 -Ce 0.97 o 2 -SiO 2 . Weigh the silane coupling agent and add it to ethanol, add dropwise the oxalic acid solution until the pH value is 3, stir and hydrolyze at room temperature for 1 hour, add a known amount of prepared coated sample, and perform ultrasonic couplin...

Embodiment 2

[0022] Example 2: Weighing CaCl with a molar ratio of 0.06:0.94 2 and Ce(NO 3 ) 3 ·6H 2 O was dissolved in distilled water and added dropwise to the carboxymethyl cellulose solution stirred at a constant speed. After the dropwise addition, at the reaction temperature of 27° C., ultrasonic reaction was performed for 4 h. Ca 0.06 -Ce 0.94 o 2 . Two solutions A and B are prepared, and the A solution is ultrasonically 30min, so that the nanoparticles can be uniformly dispersed in the solution. Then, uniformly and slowly add the B solution into the A solution dropwise, and ultrasonically hydrolyze. After the reaction, aging, suction filtration, washing, and vacuum drying to obtain the coated sample Ca 0.06 -Ce 0.94 o 2 -SiO 2 . Weigh the silane coupling agent and add it to ethanol, add dropwise the oxalic acid solution until the pH value is 4, stir and hydrolyze at room temperature for 1 hour, add a known amount of prepared coated sample, and perform ultrasonic couplin...

Embodiment 3

[0025] Example 3: Weighing CaCl with a molar ratio of 0.09:0.91 2 and Ce(NO 3 ) 3 ·6H 2 O was dissolved in distilled water and added dropwise to the carboxymethyl cellulose solution stirred at a constant speed. After the dropwise addition was completed, the reaction was ultrasonically performed at a reaction temperature of 29° C. for 1 h. Ca 0.09 -Ce 0.91 o 2 . Two solutions A and B are prepared, and the A solution is ultrasonically 30min, so that the nanoparticles can be uniformly dispersed in the solution. Then, uniformly and slowly add the B solution into the A solution dropwise, and ultrasonically hydrolyze. After the reaction, aging, suction filtration, washing, and vacuum drying to obtain the coated sample Ca 0.09 -Ce 0.91 o 2 -SiO 2 . Weigh the silane coupling agent and add it to ethanol, add dropwise the oxalic acid solution until the pH value is 3, stir and hydrolyze at room temperature for 1 hour, add a known amount of prepared coated sample, and perform...

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Abstract

The invention discloses a UV resistant agent used for acrylic coating and a preparation method and an application thereof. The UV resistant agent is obtained by that nanometer CeO2 doped with Ca is prepared with a carboxymethocel ultrasound assisted method, then SiO2 is adopted to coat, and surface finish is performed by silane coupling agent. The UV resistant agent of the invention is suitable for UV aging protection of acrylic coating; when adding amount is 3%, ultraviolet screening efficiency is 94.5%; the penetration ratio in a visible light zone is kept above 71%, which is obviously higher than that of ZnO and TiO2, so that the UV resistant agent can serve as an excellent UV resistant agent which can be used on various coatings exposing in outdoor environment for prolonging the service life of the coating.

Description

technical field [0001] The invention relates to an anti-ultraviolet agent for acrylic paint, its preparation method and application. Background technique [0002] With the increase and short wave of ultraviolet radiation, it will cause great harm and impact on human production and life. In the production and processing of polymer materials, UV stabilized absorbers and other additives are generally required to be added. Especially in the fields of auto parts and building materials, there are strict requirements on weather resistance, oxidation resistance, and heat resistance. Protecting the human body from excessive and ultraviolet radiation and reducing photoaging of polymer materials has become one of the goals of developing new products in many industries today. [0003] In order to improve the service life of the polymer in the outdoor environment, the structure of the polymer molecule can be modified, or an ultraviolet light stabilizer can be added. UV light stabilize...

Claims

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Application Information

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IPC IPC(8): C09D7/12C09D133/00
Inventor 余林孙明范方强余倩余坚郝志峰
Owner HUIZHOU PERFECT CHEM IND CO LTD
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