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Modified natural rubber waterproof emulsion and preparation method thereof

A natural rubber and waterproof emulsion technology, which is applied in natural rubber coatings, anti-corrosion coatings, coatings, etc., can solve the problems of high glass transition temperature, poor low-temperature film-forming property, water resistance, etc., and achieve excellent anti-aging performance, acid and alkali resistance Good performance and excellent waterproof performance

Inactive Publication Date: 2019-12-20
王廷龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of ethylene-vinyl acetate emulsion, such as high glass transition temperature, poor low-temperature film-forming property, water resistance, cold resistance and poor mechanical stability, greatly limit its application.
Moreover, the ethylene-vinyl acetate emulsion will turn white when it touches water, which cannot meet the fields that have high requirements for the waterproof performance of the emulsion.
[0004] Furthermore, since this type of coating is a curing mechanism in which cement and polymer emulsion cooperate with each other with the volatilization of water, the drying speed is obviously slowed down in a closed environment with a temperature of ≤10° and a humidity of ≥80% or in a more complicated environment. , to a certain extent affect the progress of construction

Method used

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  • Modified natural rubber waterproof emulsion and preparation method thereof
  • Modified natural rubber waterproof emulsion and preparation method thereof
  • Modified natural rubber waterproof emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1 A kind of modified natural rubber waterproof emulsion, comprises each component of following mass percent:

[0035]

[0036] The emulsifier is commercially available polyurethane-acrylate composite latex. The initiator is ammonium persulfate. The adhesive is selected from chloroprene phenolic adhesives.

[0037] Described auxiliary agent comprises each component accounting for the following mass percentages of described waterproof emulsion gross mass:

[0038] Defoamer: 1%;

[0039] Stabilizer: 0.5%;

[0040] Thickener: 0.5%;

[0041] Fungicide: 0.5%;

[0042] Multifunctional additive: 0.5%.

[0043] The defoamer is a polyether silicone oil defoamer. The stabilizer is gas phase titanium dioxide. The thickener is a polyacrylate thickener. The fungicide is benzisothiazolinone. The multifunctional auxiliary agent AMP-95.

[0044] The preparation method of described modified natural rubber waterproof emulsion, comprises the steps:

[0045] (1) Th...

Embodiment 2

[0048] Embodiment 2 A kind of modified natural rubber waterproof emulsion, comprises each component of following mass percentage content:

[0049]

[0050]

[0051] The emulsifier is commercially available polyurethane-acrylate composite latex. The initiator is potassium persulfate. The adhesive is selected from epoxy resin adhesives.

[0052] Described auxiliary agent comprises each component accounting for the following mass percentages of described waterproof emulsion gross mass:

[0053] Defoamer: 2%;

[0054] Stabilizer: 1%;

[0055] Thickener: 0.5%;

[0056] Fungicide: -0.5%;

[0057] Multifunctional Auxiliary: 1%.

[0058] The defoamer is a silicone oil emulsion defoamer. The stabilizer is nano ceria. The thickener is a polyacrylate thickener and a polyurethane thickener. The fungicide is isothiazolinone. The multifunctional auxiliary agent AMP-96.

[0059] The preparation method of described modified natural rubber waterproof emulsion, comprises the st...

Embodiment 3

[0063] Embodiment 3 A kind of modified natural rubber waterproof emulsion, comprises each component of following mass percentage content:

[0064]

[0065]

[0066] The emulsifier is commercially available polyurethane-acrylate composite latex.

[0067] The initiator is sodium persulfate. The adhesive is polyurethane adhesive.

[0068] Described auxiliary agent comprises each component accounting for the following mass percentages of described waterproof emulsion gross mass:

[0069] Defoamer: 0.5;

[0070] Stabilizer: 0.5;

[0071] Thickener: 0.25;

[0072] Fungicide: 0.25;

[0073] Multifunctional additive: 0.5.

[0074] The defoamer is a polyether silicone oil defoamer. The stabilizer is gas phase titanium dioxide. The thickener is a polyurethane thickener. The bactericide is a mixture of isothiazolinone and benzisothiazolinone. The multifunctional auxiliary agent AMP-95.

[0075] The preparation method of described modified natural rubber waterproof emulsi...

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Abstract

The invention relates to the technical field of waterproofness and in particular to a modified natural rubber waterproof emulsion which comprises the following components in percentage by mass: 40-70%of natural rubber, 25-35% of a cation emulsion, 0.5-6% of an initiator, 0.5-6% of an emulsifier, 2-8% of an adhesive and 2-5% of aids. The modified natural rubber waterproof emulsion has excellent waterproof performance, is good in acid-alkali resistance, has properties of corrosion resistance and humidity resistance, can be rapidly formed as a film at a low temperature, is high in transparency after being dried, is free of color difference, gel or caking, and has a solid content up to 50% or greater.

Description

technical field [0001] The invention relates to the technical field of waterproofing, in particular to a modified natural rubber waterproof emulsion and a preparation method thereof. Background technique [0002] Polymer cement waterproof coating is made of modified polymer emulsion and cement as the main raw materials, adding various additives and inorganic fillers. The material has good film-forming properties and is suitable for waterproofing, Seepage-proof and moisture-proof. [0003] For example, Chinese patent document CN201810956051.X discloses a polymer cement waterproof coating, including liquid material and powder material. The liquid material includes the following components in parts by weight: 50-60 parts of ethylene-vinyl acetate emulsion, 0.3-60 parts of emulsifier 0.9 parts, 15-30 parts of plasticizing emulsion, 0.6-1.2 parts of dispersant and 10-15 parts of water; the powder includes the following components in parts by weight: 30-40 parts of cement, 20-30 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D107/00C09D201/00C09D161/14C09D163/00C09D175/04C09D131/04C09D7/65C09D5/08
CPCC08L2205/035C09D5/08C09D107/00C09D7/65C08L101/00C08L61/14C08L51/08C08L63/00C08L75/04C08L31/04
Inventor 王廷龙
Owner 王廷龙
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