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Difficult-to-foam sealant and preparation method thereof

A kind of beautifying agent and difficult technology, applied in the field of beautifying agent, it can solve the problems of low shrinkage rate, poor flexibility, corrosion of beautifying agent, etc., and achieve the effect of improving permeability and density.

Active Publication Date: 2021-01-26
安徽牛元新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One-component beautifying agents generally have disadvantages such as large shrinkage rate and easy falling off
The two-component beautifying agent has the advantages of low shrinkage, good adhesion, and high brightness. However, the two-component beautifying agent is mostly epoxy resin type, and its aromatic ring structure has poor UV resistance and poor flexibility. In a humid environment, such as in the rainy season, because the surface of the base material has a large water content, the moisture will penetrate towards the joint between the base material and the beautifying agent, resulting in a decrease in the beautifying agent and adhesion, resulting in blistering
In addition, microorganisms such as fungi and bacteria are easy to breed in hot and humid environments. These microorganisms will corrode the polymer components of the beautifying agent, making the beautifying agent prone to mildew and blackening

Method used

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  • Difficult-to-foam sealant and preparation method thereof
  • Difficult-to-foam sealant and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0027] The preparation method of aliphatic isocyanate prepolymer is as follows:

[0028] Add 2-3 parts of isocyanate monomer and 1-2 parts of polycaprolactone diol to the reactor in order by weight, control the temperature of the reactor at 60-70°C, and measure the NCO value after 3 hours of reaction; when NCO When the value reaches 30%, stop the reaction and discharge the material to obtain an aliphatic isocyanate prepolymer, which can make the prepared beautifying agent solidify without NCO residue, and avoid the reaction of NCO and water to form CO 2 Cause bubbling, and micro-excess polyaspartic acid ester improves the stability of molecular structure due to the existence of nano-titanium dioxide, and is not easy to appear yellowing phenomenon.

[0029] The hot and humid environment is easy to breed microorganisms such as fungi and bacteria, and these microorganisms will damage the structure of the beauty joint agent or cause mildew. In some preferred embodiments, nano-sil...

Embodiment 1

[0036] Embodiment 1 provides a kind of beauty joint agent that is not easy to foam, including component A and component B;

[0037] Component A includes 85 parts of polyaspartic acid ester, 2 parts of leveling agent (purchased from Yangzhou Weina New Material Co., Ltd., model SY-5088), 2 parts of defoamer (purchased from Guangzhou Duomeiduo New Material Co., Ltd., the model is BK-431), 8 parts of nano-titanium dioxide, 2 parts of 3-butyl-2-(1-ethylpentyl) oxazolidine; among them, polyaspartic acid ester The viscosity at 25°C is 800-1500mPa / s, the amine value is 200-204, purchased from Shanghai Junhe Chemical Co., Ltd., the model is JH-8142; the nano-titanium dioxide is rutile type, the average particle size is 50nm, purchased from Hefei Zhonghang Nanotechnology Development Co., Ltd., model ZH-TiO250NJ; 3-butyl-2-(1-ethylpentyl) oxazolidine was purchased from Hubei Yongkuo Technology Co., Ltd.

[0038] Component B includes 85 parts of curing agent, 2 parts of antibacterial age...

Embodiment 2

[0043] Similar to Example 1, a non-foaming beautifying agent and its preparation method are provided, but the A component includes 80 parts of polyaspartic acid ester, 1 part of leveling agent, 1 part of defoamer, 5 parts of nano-titanium dioxide, 2 parts of 3-butyl-2-(1-ethylpentyl) oxazolidine; the component B is proportioned in parts by mass, including 75 parts of curing agent, 1 part antibacterial agent, 5 parts thickener.

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Abstract

The invention provides a difficult-to-foam sealant and a preparation method thereof. The sealant comprises a component A and a component B; the component A comprises the following components, by weight: 80-90 parts of polyaspartic acid ester, 1-3 parts of a leveling agent, 1-3 parts of an antifoaming agent, 5-10 parts of nano titanium dioxide and 1-3 parts of oxazolidine; and the component B comprises the following components, by weight: 75-90 parts of a curing agent, 1-3 parts of an antibacterial agent and 5-10 parts of a thickening agent. The component A and the component B are mixed to forma polyurea product, and the sealant has excellent tensile strength and elongation, is not easy to foam in a humid and hot environment, and also has very good antibacterial property and ultraviolet resistance.

Description

technical field [0001] The invention relates to a beautifying agent, in particular to a beautifying agent which is not easy to foam and a preparation method thereof. Background technique [0002] Beauty joints mainly include one-component joints and two-component joints. One-component beautifying agents generally have disadvantages such as large shrinkage rate and easy falling off. The two-component beautifying agent has the advantages of low shrinkage, good adhesion, and high brightness. However, the two-component beautifying agent is mostly epoxy resin type, and its aromatic ring structure has poor UV resistance and poor flexibility. In a humid environment, such as during the rainy season, because the surface of the base material has a large water content, the moisture will permeate towards the joint between the base material and the beautifying agent, resulting in a decrease in the beautifying agent and adhesion, resulting in blistering. In addition, microorganisms such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/02C09J11/04
CPCC09J175/02C09J11/04C08K2003/2241C08K2201/005C08K2201/011C08K13/04C08K7/26C08K7/18C08K3/22
Inventor 王术生
Owner 安徽牛元新材料有限公司
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