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Anti-ultraviolet polymer emulsion and preparation method thereof

A polymer emulsion and anti-ultraviolet technology, applied in the field of construction, can solve the problems of poor durability, unsuitable latex modified cement mortar, and poor anti-ultraviolet effect of latex mortar, so as to reduce the rebound strength and improve the anti-ultraviolet aging performance , the effect of reducing loss

Active Publication Date: 2021-07-23
CHINA NUCLEAR IND ZHONGYUAN CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The acrylic resins targeted by these two prior art documents are generally resin glues dissolved in solvents. After being mixed with ultraviolet absorbers, a transparent protective film is subsequently formed under the action of a curing agent. Although it can have a certain anti-ultraviolet effect, but It is not suitable for the technical field of latex modified cement mortar, it is difficult to achieve dispersion in the latex system, the anti-ultraviolet effect on latex mortar is not good, and the durability is poor

Method used

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  • Anti-ultraviolet polymer emulsion and preparation method thereof

Examples

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Embodiment 1

[0025] Anti-UV polymer emulsion, including components such as the following mass:

[0026] 100 g of ultraviolet light absorbers (phenyl phenyl phytics), 200 g of deionized water, 10 g of solvent (benzene), dried base mass of 5 g of LNBR-SA resin emulsion;

[0027] The method of preparing the LNBR-SA resin emulsion: 20 g of a graft monomer is added to a liquid nitrile rubber emulsion of 250 g of mass concentration of 40%, and the graft monomer is 15 g of styrene and 5 g of acrylonitrile, and then emulsified Dodyl sulfonate sodium sodium 0.2 g, molecular weight regulator tertululin, 0.1 g, deionized water 20g and initiator of potassium sulfate, grafting under reaction temperature 60 ° C and stirred at 600 rpm The reaction was reacted, and the LNBR-SA resin emulsion was obtained after 2 hours.

[0028] Preparation of the above anti-UV polymer emulsion: Take the ultraviolet light absorbent 羟 羟 羟 羟 羟 羟 羟 羟 水 水 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到The emulsifier was stirred at a temperatu...

Embodiment 2

[0039] Anti-UV polymer emulsion, including components such as the following mass:

[0040] 100 g of ultraviolet light absorbers (2-hydroxy-4-n-octatutanbenzophenone), 200 g of deionized water, 10 g of a solvent (benzene), dried by 5 g of LNBR-SA resin emulsion;

[0041] A process for preparation of the LNBR-SA resin emulsion: 20 g of graft monomer is added to a liquid nitrile rubber emulsion of 250 g of mass concentration of 40%, the graft monomer being 15 g of styrene and 5 g of acrylate, then addition Emulsifier dodecyl sulfate sodium sulfate 0.2 g, molecular weight regulator tertudiobiol 0.1 g, deionized water 20g and initiator of potassium sulfate, grafting reaction at a reaction temperature of 60 ° C and stirring rotation speed 600 rpm The LNBR-SA resin emulsion was obtained after 2 hours.

[0042] Preparation of the above anti-UV polymer emulsion: Take UV light absorbent 2-hydroxy-4-n-octoxybenzophenone, deionized water, solubilizer keta, and LNBR-SA resin emulsion, the ultr...

Embodiment 3

[0050] Anti-UV polymer emulsion, including components such as the following mass:

[0051] 100 g of ultraviolet light absorbers (phenylbenzoate), 300 g of deionized water, 13 g of solvent (benzene), dry base mass of 5 g of LNBR-SA resin emulsion;

[0052] A 20g graft monomer was added to a liquid nitrile rubber emulsion of 250 g of a mass concentration of 40%, and the graft monomer was 14 g of styrene and 6 g acrylate butyl, then addition Emulsifier dodecyl sulfate sodium sulfate 0.3 g, molecular weight regulator tertus thiobiol 0.14 g, deionized water 28g and 0.15 g sodium deionized sodium sulfate, grafting reaction at a reaction temperature 58 ° C and stirring speed 600 rpm The LNBR-SA resin emulsion was obtained after 3 hours.

[0053] Preparation of the above anti-UV polymer emulsion: Take the ultraviolet light absorbent 羟 羟 羟 羟 羟 羟 羟 羟 水 水 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到The emulsifier was stirred at a temperature of 8000 rpm and stirred at a temperature of 27 ° C for 18 m...

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Abstract

The invention discloses an anti-ultraviolet polymer emulsion. The anti-ultraviolet polymer emulsion comprises the following components in parts by mass: 100 parts of an ultraviolet light absorber, 200-500 parts of deionized water, 10-50 parts of a cosolvent and 5-20 parts, in terms of dry basis mass, of an LNBR-SA resin emulsion. A preparation method of the LNBR-SA resin emulsion comprises the following steps: adding grafting monomers, namely styrene and acrylonitrile into a liquid nitrile rubber emulsion, adding an emulsifier, a molecular weight regulator, deionized water and an initiator, and carrying out a grafting reaction to obtain the LNBR-SA resin emulsion, wherein the use amount of the grafting monomers is 20-80% of the dry basis amount of the liquid nitrile rubber emulsion. According to the anti-ultraviolet polymer emulsion disclosed by the invention, the ultraviolet light absorber and the emulsion have good compatibility, loss of effective components is reduced, and meanwhile, effective components can be reinforced to stay in a polymer phase and are slowly released in a subsequent service period, so protection on a polymer chain segment structure is realized, and the ultraviolet aging resistance of the polymer-cement-based composite material is improved.

Description

Technical field [0001] The present invention relates to an anti-UV polymer emulsion and a preparation method thereof, belonging to the field of building technology. Background technique [0002] The exterior wall plasma cement material and the road surface usually use the polymer emulsion modified mortar, and the effect of waterproof and impermeability, adhesion strength, when applied to the building or pavement structure, it takes a long time to exposure in the sun. And the polymer polymer is prone to free radicals under ultraviolet light, and thereof, thereby degrading, oxidation, etc., resulting in deterioration of polymer mortar performance. The application of polymer emulsion modified cement-based concrete materials in the fields of roads and building materials is earlier, as early as 1939, Americans Rodwell successfully proposed synthetic resin emulsion production polymer modified cement-based materials. The polymer doping is 5 to 20% of cement weight, and the polymer used ...

Claims

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Application Information

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IPC IPC(8): C04B24/26C08F279/02C08F212/10C08F220/44C04B103/60
CPCC08F279/02C04B40/0039C04B2103/605C04B2103/0059C08F212/10C08F220/44C04B24/2652C04B24/06C04B24/02
Inventor 罗洪余恩晨冯泽仟王佩陈辉艾纯金
Owner CHINA NUCLEAR IND ZHONGYUAN CONSTR