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Nanometer TiO2/ZnO anti-ultraviolet coating for PC and preparation method thereof

A UV-resistant and nano-technology, applied in coatings, polyurea/polyurethane coatings, polyester coatings, etc., can solve the problems of difficult uniform dispersion of additives and local photoaging of products, and reduce absorption speed and coating adhesion. Good, maintain the effect of transparent performance

Inactive Publication Date: 2015-07-15
MIANYANG SHENGYU NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is easier to implement, it cannot focus on protecting the parts of the product that are directly exposed to light, and it is difficult to disperse the additives uniformly, resulting in local photoaging of the product.

Method used

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  • Nanometer TiO2/ZnO anti-ultraviolet coating for PC and preparation method thereof
  • Nanometer TiO2/ZnO anti-ultraviolet coating for PC and preparation method thereof
  • Nanometer TiO2/ZnO anti-ultraviolet coating for PC and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Nano TiO 2 The chelate is prepared by isobutyric acid modification and precipitation method, which are lipophilic nanoparticles with a particle size of 40nm to 100nm; the nano ZnO is coated with a stabilizer dioctyl pyrophosphate titanium, and the particle size is 20nm to 100nm. Treated Nano TiO 2 and nano-ZnO in a vacuum oven, and dried at 40° C. to 60° C. for 24 hours for later use.

[0035] Mix 50kg of polyester acrylate oligomer and 35kg of active monomer in a stirrer, heat up to 40-60°C, stir at a speed of 30r / min for 20min, and adjust the viscosity to 400cps. Then take by weighing the nano-TiO treated with surface-modified nano-ZnO 2kg and stabilizer 2 2kg was added to the above mixed solution, and the temperature was raised to 100-120°C for secondary stirring and mixing at a stirring speed of 50r / min for 2h. After lowering the temperature to 40-60°C, add 10kg of benzophenone or benzoin dimethyl ether and 1kg of N-alkyl aspartic acid-β-alkyl ester or Nβ-acyl-L...

Embodiment 2

[0037] Nano TiO 2 The chelate is prepared by isobutyric acid modification and precipitation method, which are lipophilic nanoparticles with a particle size of 40nm to 100nm; the nano ZnO is coated with a stabilizer dioctyl pyrophosphate titanium, and the particle size is 20nm to 100nm. Treated Nano TiO 2 and nano-ZnO in a vacuum oven, and dried at 40° C. to 60° C. for 24 hours for later use.

[0038] Mix 50kg of polyester acrylate oligomer and 35kg of active monomer in a stirrer, heat up to 40-60°C, stir at a speed of 30r / min for 20min, and adjust the viscosity to 400cps. Then take the nano-ZnO 2kg of the surface modification and the nano-TiO treated by the stabilizer with spare 2 4kg was added to the above mixed solution, and the temperature was raised to 100-120°C for secondary stirring and mixing at a stirring speed of 50r / min for 2h. After lowering the temperature to 40-60°C, add 8kg of benzophenone or benzoin dimethyl ether and 1kg of N-alkyl aspartic acid-β-alkyl est...

Embodiment 3

[0040] Nano TiO 2The chelate is prepared by isobutyric acid modification and precipitation method, which are lipophilic nanoparticles with a particle size of 40nm to 100nm; the nano ZnO is coated with a stabilizer dioctyl pyrophosphate titanium, and the particle size is 20nm to 100nm. Treated Nano TiO 2 and nano-ZnO in a vacuum oven, and dried at 40° C. to 60° C. for 24 hours for later use.

[0041] Mix 35kg of polyester acrylate oligomer and 50kg of active monomer in a stirrer, heat up to 40-60°C, stir at a speed of 30r / min for 20min, and adjust the viscosity to 400cps. Then take the nano-ZnO 2kg of the surface modification and the nano-TiO treated by the stabilizer with spare 2 2kg was added to the above mixed solution, and the temperature was raised to 100-120°C for secondary stirring and mixing at a stirring speed of 50r / min for 2h. After lowering the temperature to 40-60°C, add 10kg of benzophenone or benzoin dimethyl ether and 1kg of N-alkyl aspartic acid-β-alkyl est...

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Abstract

The invention discloses a nanometer TiO2 / ZnO anti-ultraviolet coating for PC and a preparation method thereof. The anti-ultraviolet coating comprises 20 to 50 parts of polyester acrylate oligomer, 20 to 50 parts of active monomer, 2 to 4 parts of nanometer TiO2, 2 to 4 parts of nanometer ZnO, 1 to 10 parts of a photosensitizer and 0.5 to 1 part of a surfactant. After shaping, the coating provided by the invention has a good anti-ultraviolet function and certain transparency; and effective and firm bonding between nanometer TiO2 / ZnO and a coating substrate and between the coating and PC plastic are formed, so the coating hardly falls off.

Description

technical field [0001] The invention relates to the field of modification and processing of polymer materials, in particular to a nano-TiO used for PC 2 / ZnO UV resistant coating and preparation method thereof. Background technique [0002] Polycarbonate is the fastest growing general-purpose engineering plastic. It has high strength, good impact resistance, good fatigue resistance, good electrical properties, high transparency and free dyeing, and is non-toxic, harmless and tasteless, so it is widely used in glass assembly industry, automobile industry and electronic and electrical industry, etc. . However, its UV resistance is poor. Under the action of ultraviolet rays for a long time, the surface of the product will turn yellow, the size will change, the mechanical properties will decrease, and the service life will decrease. Therefore, it is very important to modify the UV resistance of PC materials. [0003] The UV-resistant modification of PC has been deeply studie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/12C08J7/04C08L69/00
CPCC08J7/0427C08J2369/00C08J2467/06C08K3/22C08K9/04C08K2003/2241C08K2003/2296C08K2201/011C08L2201/10C09D7/62C09D7/63C09D7/67C09D167/06
Inventor 阎茂盛李瑞海李涛
Owner MIANYANG SHENGYU NEW MATERIALS
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