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Ultraviolet shielding film

An external shielding and film technology, applied in the field of UV shielding films, can solve the problems of poor stability and durability of UV shielding films, and achieve improved stability and durability, good thermal and mechanical properties, and high reactivity. Effect

Inactive Publication Date: 2019-04-16
徐冬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide an ultraviolet shielding film in view of the poor stability and durability of the commonly used ultraviolet shielding films

Method used

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  • Ultraviolet shielding film

Examples

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preparation example Construction

[0031] The preparation method of composite resin base material, comprises the steps:

[0032] (1) Take gallic acid, epoxidized soybean oil, and epichlorohydrin in a reaction kettle according to a mass ratio of 3:1~2:16~30, mix them in a reactor, heat up to 85~95°C, and keep stirring at a speed of 350~600r / min for 40 ~60min, to get the mixed solution, take the mixed solution and add 1~4% additives of the mixed solution mass to mix, keep stirring at 550~900r / min for 2~4h, then cool down to room temperature naturally, get the working solution, take the working solution and add mass Adjust the pH to 7.3-8.0 with a 12% NaOH solution, add 6-10% pretreated nano-materials as the working solution, mix and stir, let stand at room temperature for 1-3 hours, filter, take the filter cake and wash it with water 2-4 times to obtain resin base;

[0033] (2) Take the resin base material according to the mass ratio of 3:0.2~0.5:12~20, add auxiliary materials and reagent A, mix and stir to obta...

example 1

[0040] Pretreatment nano material: take nano TiO according to the mass ratio of 3:1:3 2 , Nano ZnO, Nano SiO 2 Mix in a mortar and grind for 1 hour at 400r / min to obtain a grinding base. Take the grinding base and add hexadecyltrimethylammonium bromide and water in a mass ratio of 5:1:12, mix it with water, and ultrasonically treat it at a frequency of 55kHz for 20min. have to pretreat nanomaterials.

[0041] Reagent A: Mix ammonium chloride solution with a mass fraction of 15% and sodium bicarbonate at a mass ratio of 12:1 to obtain reagent A.

[0042] Reagent B: Mix Tris-HCl buffer solution with a pH of 7.8 and absolute ethanol at a volume ratio of 12:5 to obtain Reagent B.

[0043] Auxiliary material: mix polyvinylpyrrolidone and nano-hydroxyapatite at a mass ratio of 3:0.1 to obtain the auxiliary material.

[0044] Additive: Mix tetrabutylammonium bromide and triphenylphosphine in a mass ratio of 5:1 to obtain the additive.

[0045] Dispersant: Mix calcium stearate and...

example 2

[0056] Pretreatment nano material: take nano TiO according to the mass ratio of 3:1:4 2 , Nano ZnO, Nano SiO 2 Mix in a mortar and grind for 2 hours at 550r / min to obtain a grinding base. Take the grinding base and add hexadecyltrimethylammonium bromide and water in a mass ratio of 5:2:12, mix it with water, and ultrasonically treat it at 60kHz for 32min. have to pretreat nanomaterials.

[0057] Reagent A: Mix ammonium chloride solution with a mass fraction of 15% and sodium bicarbonate at a mass ratio of 15:1 to obtain reagent A.

[0058] Reagent B: Mix Tris-HCl buffer solution with a pH of 8.0 and absolute ethanol at a volume ratio of 15:5 to obtain Reagent B.

[0059] Auxiliary material: mix polyvinylpyrrolidone and nano-hydroxyapatite at a mass ratio of 4.5:0.1 to obtain the auxiliary material.

[0060] Additive: Mix tetrabutylammonium bromide and triphenylphosphine in a mass ratio of 5:2 to obtain the additive.

[0061] Dispersant: Mix calcium stearate and polyethylen...

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Abstract

The invention relates to an ultraviolet shielding film, and belongs to the technical field of polymer materials. According to the present invention, a resin base material is prepared from gallic acid,epoxidized soybean oil, epoxy ethyl chloride and other raw materials, wherein the gallic acid contains three hydroxyl groups and one carboxyl group, and is similar to bisphenol A so as to provide good thermal property and good mechanical property in the system; and castor silk fiber is sequentially treated with a dopamine liquid, chitosan, graphene oxide and the like, and the graphene oxide and the chitosan are subjected to layer-by-layer alternating deposition through the electrostatic adsorption between the graphene oxide and the chitosan so as to improve the surface activity and the ultraviolet protection property, such that the contained functional groups such as catechol, amino, imino and the like can be introduced into the surface, and the catechol group can reacts with the molecules containing amino and thiol to carry out secondary functionalization on the surface of the material so as to further improve the internal coupling degree and hierarchically improve the internal stability and the ultraviolet resistance.

Description

technical field [0001] The invention relates to an ultraviolet shielding film, which belongs to the technical field of polymer materials. Background technique [0002] With the rapid development of the economy, the use of polymer materials has penetrated into all areas of life, bringing great convenience to our lives, especially polymer film materials, which are widely used. However, most polymer film materials are difficult to degrade in nature, leading to environmental pollution problems. At the same time, the raw materials for synthesizing such polymer films come from limited and non-renewable petroleum resources, which do not meet the requirements of sustainable development of human beings. With the increasing shortage of resources and people's high attention to environmental issues, the development of fully biodegradable polymer film materials has become a research hotspot at home and abroad. [0003] Polylactic acid (PLA) can be processed and manufactured from renewa...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L89/00C08L23/06C08L39/06C08K9/04C08K3/22C08K3/36C08K3/32C08K3/04C08J5/18
CPCC08J5/18C08K3/042C08K3/36C08K9/04C08K2003/2241C08K2003/2296C08K2003/325C08K2201/011C08L2205/035C08L2205/16
Inventor 徐冬黄春妹史志新
Owner 徐冬
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