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A kind of silicone waterproof and oil-proof emulsion and preparation method thereof

A waterproof and oil-proof, silicone technology, applied in the field of silicone waterproof and oil-proof emulsion and its preparation, can solve the problems of flammable and explosive solvents, flatulence, short shelf life, waterproof but not oil-proof, etc., and achieve good waterproof effect and high water absorption rate low effect

Active Publication Date: 2020-11-06
HANGZHOU RUIJIANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The development of China's current silicone waterproofing agent technology is far behind that of large foreign companies. At present, the common water-based waterproofing agents on the domestic market are low-end methyl silicates (the product is strongly alkaline), and hydrogen-containing silicone oil emulsion (the product has a flat shelf life. short); only a few companies in China can independently produce silane emulsions, but there is a gap in application effect with similar products of foreign companies, and pure alkyl silane emulsions are only waterproof but not oilproof
Most of the fluorine-based waterproofing agents on the market are solvent-based waterproofing agents. Not only are the operations troublesome during construction, but most of the solvents are flammable and explosive, which are poisonous to the human body and pollute the environment.

Method used

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  • A kind of silicone waterproof and oil-proof emulsion and preparation method thereof
  • A kind of silicone waterproof and oil-proof emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A silicone waterproof and oil-repellent emulsion, which is prepared from the following raw materials: 30% methacrylic acid fluorine-modified benzyl silicone oil, 30% alkyl silicone resin prepolymer, 1% polyether-modified silicone oil, pH adjustment 8% of additives, 1% of white carbon black, 30% of deionized water, and the percentages are all mass percentages. The alkyl silicone resin prepolymer is a prepolymer formed by polymerization of methyltriethoxysilane, isobutyltriethoxysilane and octyltriethoxysilane in a mass ratio of 1:1:2. The polyether-modified silicone oil is a polyether-modified silicone oil with a propylene oxide:ethylene oxide ratio of 25:15 and an HLB value of 11-13 in the polyether segment. The pH adjustment assistant is prepared from acetic acid and ethanol in a mass ratio of 1:80. The white carbon black is 1000 mesh hydrophobic white carbon black.

[0024] The above silicone water and oil repellent emulsion is prepared by the following process step...

Embodiment 2

[0030] A silicone waterproof and oil-repellent emulsion, which is prepared from the following raw materials: 50% methacrylic acid fluorine-modified benzyl silicone oil, 10% alkyl silicone resin prepolymer, 5% polyether-modified silicone oil, pH adjustment 5% of additives, 5% of white carbon black, 25% of deionized water, and the percentages are all mass percentages. The alkyl silicone resin prepolymer is a prepolymer formed by polymerization of methyltriethoxysilane, isobutyltriethoxysilane and octyltriethoxysilane in a mass ratio of 1:1:2. The polyether-modified silicone oil is a polyether-modified silicone oil with a propylene oxide:ethylene oxide ratio of 25:15 and an HLB value of 11-13 in the polyether segment. The pH adjustment assistant is prepared from acetic acid and ethanol in a mass ratio of 1:80. The white carbon black is 1000 mesh hydrophobic white carbon black.

[0031] The above silicone water and oil repellent emulsion is prepared by the following process step...

Embodiment 3

[0037] A silicone waterproof and oil-repellent emulsion, which is prepared from the following raw materials: 40% methacrylic acid fluorine-modified benzyl silicone oil, 20% alkyl silicone resin prepolymer, 2% polyether-modified silicone oil, pH adjustment 6% of additives, 4% of white carbon black, 28% of deionized water, and the percentages are all mass percentages. The alkyl silicone resin prepolymer is a prepolymer formed by polymerization of methyltriethoxysilane, isobutyltriethoxysilane and octyltriethoxysilane in a mass ratio of 1:1:2. The polyether-modified silicone oil is a polyether-modified silicone oil with a propylene oxide:ethylene oxide ratio of 25:15 and an HLB value of 11-13 in the polyether segment. The pH adjustment assistant is prepared from acetic acid and ethanol in a mass ratio of 1:80. The white carbon black is 1000 mesh hydrophobic white carbon black.

[0038] The above silicone water and oil repellent emulsion is prepared by the following process step...

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Abstract

The invention relates to a novel organic silicon water and oil proofing emulsion and a preparation method thereof. The emulsion is characterized by comprising the following components in percentage bymass: 30-50% of methacrylic acid fluorine modified polymethylphenyl siloxane fluid, 10-30% of an alkyl silicon resin prepolymer, 1-5% of polyether modified silicon oil, 5-8% of a pH value adjusting aid, 1-5% of white carbon black and 25-30% of deionized water. Compared with a conventional waterproof agent, the emulsion has the advantages of being low in water absorption rate and good in waterproof effect, and meanwhile has an oil proofing effect.

Description

technical field [0001] The invention relates to the technical field of silicone waterproofing, in particular to a silicone waterproof and oil-repellent emulsion and a preparation method thereof. Background technique [0002] Silicone emulsion waterproofing agent has a development history of more than 50 years abroad. Large foreign companies such as Dow Corning and Wacker have applied silicone waterproofing emulsion to various substrate protection and maintenance. The development of China's current silicone waterproofing agent technology is far behind that of large foreign companies. At present, the common water-based waterproofing agents on the domestic market are low-end methyl silicates (the product is strongly alkaline), and hydrogen-containing silicone oil emulsion (the product has a flat shelf life. Short); only a few companies in China can independently produce silane emulsions, but there is a gap in application effect with similar products of foreign companies, and pu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/68C08G77/385C08G77/12C04B111/27
CPCC04B41/5035C04B41/68C04B2111/27C08G77/12C08G77/385C04B41/4961C04B41/46C04B41/502
Inventor 余钢左伟超丁伟
Owner HANGZHOU RUIJIANG CHEM