A kind of fluorine-containing polysiloxane non-stick additive and its preparation method and application

A technology of polysiloxane and adhesion aid, which is applied in the direction of biocide-containing paints, coatings, antifouling/underwater coatings, etc., can solve problems such as poor non-stick durability, and achieve low surface energy and good biological inertness. , Improve the effect of non-stick durability

Active Publication Date: 2019-07-16
HANGZHOU JIHUA POLYMER MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing ceramic coatings have poor non-stick durability. In view of the above-mentioned defects of the prior art, the first purpose of the present invention is to provide a fluorine-containing polysiloxane non-stick additive

Method used

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  • A kind of fluorine-containing polysiloxane non-stick additive and its preparation method and application
  • A kind of fluorine-containing polysiloxane non-stick additive and its preparation method and application
  • A kind of fluorine-containing polysiloxane non-stick additive and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] First vacuum the reaction device to 1×10 -1 Pa, remove oxygen and moisture, then pass in nitrogen protection, add 50 parts by weight of fluorine-containing silicone oil I (n=3, Rf is -CH 2 CH 2 CF 3 ), 6 parts by weight of trimethoxysilane, 30 ppm of Karstedt catalyst, 10 parts by weight of THF, after stirring uniformly, the reaction is carried out at 60°C for 5 hours, the product is removed from THF and excess silane to obtain fluorine-containing polysiloxane Non-stick additives 1.

[0034] The synthetic route is as follows:

[0035] .

Embodiment 2

[0037] First vacuum the reaction device to 1×10 -1 Pa, remove oxygen and moisture, then pass in nitrogen protection, add 50 parts by weight of fluorine-containing silicone oil I (n=6, Rf is -CH 2 CH 2 CF 2 CF 2 CF 2 CF 3 ), 3 parts by weight of triethoxysilane, 20 ppm of Karstedt catalyst, and 20 parts by weight of solvent. After stirring uniformly, the reaction is carried out at 60°C for 3 hours. After the product is removed THF and excess silane, fluorine-containing polysiloxane is obtained Alkane non-stick additives 2.

[0038] The synthetic route is as follows:

[0039] .

Embodiment 3

[0041] First vacuum the reaction device to 1×10 -1 Pa, remove oxygen and moisture, then pass in nitrogen protection, add 50 parts by weight of fluorine-containing silicone oil I (n=50, Rf is -CH 2 CH 2 CF 2 CF 2 CF 2 CF 2 CF 2 CF 3 ), 0.5 parts by weight of trimethoxysilane, 10 ppm of Karstedt catalyst, and 30 parts by weight of solvent. After stirring uniformly, the reaction is carried out at 60°C for 8 hours. After the product is removed from the solvent, a fluorine-containing polysiloxane non-stick auxiliary agent is obtained 3.

[0042] The synthetic route is as follows:

[0043] .

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Abstract

The invention discloses a fluorine-containing polysiloxane non-stick additive as well as a preparation method and application thereof. The additive has a molecular formula 1 shown in the specification and is prepared through hydrosilylation reaction between fluorine-containing silicone oil with reactive groups and silane in the presence of a platinum catalyst. The non-stick additive and the preparation method have the beneficial effects that as fluorine-containing polysiloxane has low surface energy, solvent resistance, flexibility and high and low temperature resistance, the coupling agent can carry out key joint with most materials, endow base materials with good hydrophobicity, lipophobicity and pollution resistance and achieve the effect of improving the non-stick property of coatings; and the preparation method is simple, is mild in preparation conditions, has good repeatability, is high in yield and has wide application prospects.

Description

Technical field [0001] The invention relates to the field of chemical synthesis of new materials, in particular to the technical field of the preparation and application of functional polymer materials, and more specifically to a fluorine-containing polysiloxane non-sticking aid and a preparation method and application thereof. Background technique [0002] The non-stick additives used in the existing non-stick ceramic coatings are generally hydroxy silicone oil or methyl silicone oil. Due to the soft segments of organic silicon, it has a very low surface energy, thereby exhibiting better anti-sticking and releasing ability. Applying its additives to ceramic coatings can give the coating film better non-stick properties. However, hydroxy silicone oil or methyl silicone oil has mobility and will be gradually consumed with the process of use, washing, wiping, etc., so that the non-stick performance of the coating film will decrease until it loses its non-stickiness. Therefore, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/38C08G77/24C09D5/16C09D7/65
CPCC08G77/24C08G77/38C09D5/1637
Inventor 钱涛徐凯刘海兵
Owner HANGZHOU JIHUA POLYMER MATERIAL CO LTD
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