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Fluorinated polyether siloxane, preparation method and application thereof

A technology of fluorinated polyether siloxane and fluorinated polyether, which is applied in the field of polyether siloxane, and can solve the problems of poor antifouling effect, insufficient adhesion between modified silicone resin and fluorocarbon resin and substrates, etc. , to achieve the effects of good wear resistance and antifouling durability, easy control of the preparation process, and easy availability of raw materials

Active Publication Date: 2019-06-25
深圳市万力克技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After further analysis, it is believed that the poor antifouling effect is due to the existence of a large number of non-low surface energy groups on the main chain of silicone and organic fluorine in the paint film, and the adhesion of the modified silicone resin and fluorocarbon resin to the substrate is also obviously insufficient

Method used

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  • Fluorinated polyether siloxane, preparation method and application thereof
  • Fluorinated polyether siloxane, preparation method and application thereof
  • Fluorinated polyether siloxane, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]

[0037] Get 100g methyl hydrogen silicone oil (hydrogen 1.62%) and 40g CF 3 (CF 2 ) 3 CH=CH 2 In a 1L three-necked flask, add 100ml of isopropanol, place the three-necked flask in a water bath, add 8ml of isopropanol solution of chloroplatinic acid (concentration: 1g / 100ml) dropwise while stirring, and react at 60°C for 3h . Evaporate unreacted CF under reduced pressure 3 (CF 2 ) 3 CH=CH 2 monomer.

[0038] Infrared spectrum shows 1260cm -1 There is a peak (C-F), indicating that a fluorine-containing alkyl group has been inserted into the hydrogen-containing silicone oil segment, at 2200cm -1 There is a peak (Si-H), indicating that the product contains active hydrogen.

[0039] use 29 Si-NMR, 13 The resulting product was analyzed by C-NMR and had an average composition of 16 for m, 68 for n and 16 for q.

Embodiment 2

[0041]

[0042] Get 100g methyl hydrogen silicone oil (hydrogen 1.62%) and 60g CF 3 (CF 2 ) 4 CH=CH 2 In a 1L three-necked flask, add 100ml of isopropanol, place the three-necked flask in a water bath, add 10ml of isopropanol solution of chloroplatinic acid (concentration: 1g / 100ml) dropwise while stirring, and react at 40°C for 5h . Evaporate unreacted CF under reduced pressure 3 (CF 2 ) 4 CH=CH 2 monomer.

[0043] Infrared spectrum shows 1260cm -1 There is a peak (C-F), indicating that a fluorine-containing alkyl group has been inserted into the hydrogen-containing silicone oil segment, at 2200cm -1 There is a peak (Si-H), indicating that the product contains active hydrogen.

[0044] use 29 Si-NMR, 13 The resulting product was analyzed by C-NMR, which had an average composition of 25 for m, 50 for n and 25 for q.

Embodiment 3

[0046]

[0047] Get 100g methyl hydrogen silicone oil (hydrogen 1.62%) and 50g CF 3 (CF 2 ) 5 CH=CH 2 In a 1L three-necked flask, add 100ml of isopropanol, place the three-necked flask in a water bath, add 5ml of isopropanol solution of chloroplatinic acid (concentration: 1g / 100ml) dropwise while stirring, and react at room temperature for 10h. Evaporate unreacted CF under reduced pressure 3 (CF 2 ) 5 CH=CH 2 monomer.

[0048] Infrared spectrum shows 1260cm -1 There is a peak (C-F), indicating that a fluorine-containing alkyl group has been inserted into the hydrogen-containing silicone oil segment, at 2200cm-1 There is a peak (Si-H), indicating that the product contains active hydrogen.

[0049] use 29 Si-NMR, 13 The resulting product was analyzed by C-NMR, which had an average composition of 19 for m, 62 for n and 19 for q.

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Abstract

The invention relates to a fluorinated polyether siloxane, a preparation method and application thereof. The fluorinated polyether siloxane has a structure shown as formula (I). The polymer contains fluorine group and active hydrogen, also has good antifouling and decontamination performance, and excellent wear-resistant and antifouling durability, and can still have good antifouling performance after treating 2000 cycles and 5000 cycles of friction. The fluorinated polyether siloxane has simple preparation process and is low in cost, and is suitable for large-scale industrial production. Theformula (I) is shown as the specification.

Description

technical field [0001] The invention relates to a fluorinated polyether siloxane and its preparation method and application, in particular to a polyether siloxane with fluorine groups and active hydrogen. Background technique [0002] Due to the unique properties of fluorine atoms, organic fluoropolymers have chemical properties unmatched by hydrocarbon polymers, which are summarized as "three highs and two phobias", that is, high surface activity, high heat resistance stability, high chemical stability, and phobic properties. Water and oil repellency, so the introduction of perfluoroalkyl groups on the side chain or branch of polysiloxane can organically combine the advantages of silicone and organic fluoride, so that fluorine-containing polysiloxane has similar low fluorine Surface energy, but also has the flexibility and softness of silicone, so as to obtain a polymer that is both waterproof and oil-proof. Therefore, fluorine-containing polysiloxane can be widely used as ...

Claims

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Application Information

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IPC IPC(8): C08G77/385C09D183/08C09D5/16
Inventor 俸颢梁望石晓遂李克
Owner 深圳市万力克技术有限公司
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