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Fluorine-containing composition for surface treatment of porous base material

A technology for surface treatment and porous substrates, which is applied in biocide-containing paints, coatings, antifouling/underwater coatings, etc., and can solve the problems of limited adhesion between polymers and substrates, and easy gradual loss of effect. Achieve ideal adhesion effect, good three-proof effect, and good anti-fouling performance

Active Publication Date: 2016-06-22
QUZHOU FLUORIDE & SILICON RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The porous substrate protective agent disclosed in the above patent documents has good waterproof, oil-proof and anti-fouling properties, but the above-mentioned polymer has limited adhesion to the substrate, so it is easy to gradually lose its effect during use

Method used

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  • Fluorine-containing composition for surface treatment of porous base material
  • Fluorine-containing composition for surface treatment of porous base material
  • Fluorine-containing composition for surface treatment of porous base material

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0202] Monomer CH 2 =CHCOOCH 2 CH 2 NHCOOCH 2 CH 2 CF 2 CF 2 CF 2 CF 2 CF 2 CF 3 Synthesis of - F3

[0203] Add 364g (1mol) of C2 to a 1L four-necked reaction flask equipped with a stirrer, a constant temperature oil bath, a thermometer and a condenser, and add 141g (1mol) of D1 dropwise under normal temperature and stirring conditions. A small amount of hydroquinone inhibitor, then heated to 80°C for 8 hours to obtain a light yellow transparent liquid. Infrared analysis showed that the absorption peak of the isocyanate group disappeared completely.

Synthetic example 2

[0205] Monomer CH 2 =C(CH 3 ) COOCH 2 CF(CF 3 )[OCF 2 CF(CF 3 )] p OCF 2 CF 2 CF 3 Synthesis of , p represents the number of repeating units, and the average value of p is 5.3——F4

[0206] Add 1196g (1mol) of C3, 95g (1.1mol) of D2, an appropriate amount of water-carrying agent and a small amount of hydroquinone polymerization inhibitor in a 1L four-necked reaction flask equipped with a stirrer, a constant temperature oil bath, a thermometer and a condenser With a small amount of p-toluenesulfonic acid catalyst, the temperature is raised to 120° C. for esterification under stirring. When the water in the water separator is close to the theoretical value, the esterification is complete. Then, the water-carrying agent and unreacted methacrylic acid are removed by atmospheric distillation and vacuum distillation respectively, and then the catalyst and polymerization inhibitor are removed by washing with water, and the target product is obtained by vacuum drying.

Synthetic example 3

[0208] Monomer CH 2 =CHCOOCH 2 CH 2 NHCOONHCH 2 CH 2 NHCH 2 CH 2 CH 2 Si(OCH 3 ) 3 Synthesis of - S3

[0209] Add 222g (1mol) of B4 into a 1L four-necked reaction flask equipped with a stirrer, a constant temperature oil bath, a thermometer and a condenser, and add 141g (1mol) of D1 dropwise under normal temperature and stirring conditions. A small amount of hydroquinone (purchased from Nanjing Xinhuayuan Chemical Co., Ltd.) as a polymerization inhibitor was heated to 80° C. for 8 hours to obtain a light yellow transparent liquid. Infrared analysis showed that the absorption peak of the isocyanate group disappeared completely.

[0210] The synthesis of fluoropolymers is as follows:

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PUM

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Abstract

The invention discloses a fluorine-containing composition for surface treatment of a porous base material. The fluorine-containing composition is prepared from, by mass, 20 parts of a fluoropolymer, 0.1-20 parts of a polyisocyanate derivative, 0.1-10 parts of a siloxane compound and organic solvent, wherein the fluoropolymer is obtained by copolymerizing free radicals and comprises at least one Si(OR)3 siloxane group (R represents a C1-4 alkyl group), the polyisocyanate derivative contains a siloxane group shown in the formula (I), each siloxane compound molecule at least contains two hydrolysable groups, and the fluoropolymer, the polyisocyanate derivative and the siloxane compound can be completely dissolved in the organic solvent. The composition is good in waterproof, oil-proof and antifouling performance, the binding effect of the composition and a base material is ideal, which is beneficial for improving durability of the waterproof, oil-proof and antifouling functions, and use amount and use cost are reduced.

Description

technical field [0001] The invention relates to a fluorine-containing composition, in particular to a fluorine-containing composition used for surface treatment of porous substrates, and belongs to the technical field of surface protection treatment. Background technique [0002] Use of fluorinated alkyl (R f ) compound to treat the surface of the porous substrate, which can endow the surface with waterproof, oil-proof and anti-fouling effects. For example would be with R f Base acrylate coating to form a protective film on cement or stone, with R f Phosphate-based treated stone will contain R- f Polymers formed from polysiloxane-based monomers and polysiloxane-based vinyl monomers accounting for 0.1% to 1.9% by weight of the polymer are used as treatment agents, but the above protective agents still have the problems of insufficient waterproof, oil-proof and anti-fouling properties. [0003] Patent CN01123552.7 discloses a fluorosilicon copolymer including fluorine-cont...

Claims

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Application Information

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IPC IPC(8): C09D133/16C09D5/16C09D7/12
CPCC08K5/5415C08K5/5419C08K5/544C08K5/548C09D5/16C09D7/63C09D133/16
Inventor 裴金东李建郭雅飞王树华
Owner QUZHOU FLUORIDE & SILICON RES INST
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