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Vinyl perfluorinated polyether fluoride silicone oil and preparation method thereof

A technology of vinylamine-based silicone oil and perfluoropolyether, which is applied in the field of polyvinyl perfluoropolyether fluorosilicone oil and its preparation, and can solve the problems of low vinyl functionality, low cross-linking density, and poor mechanical properties , to achieve the effects of simple preparation method, easy operation, improved mechanical strength and acid corrosion resistance

Active Publication Date: 2017-01-18
太仓中化环保化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent CN201110154562.8 discloses a fluorosilicone cured product containing double-ended vinyl perfluoropolyether resin and hydrogen-containing fluorosilicone oil. However, the vinyl functionality in the perfluoropolyether resin in this formula is small, so the use of The perfluoropolyether resin preparation material has low crosslink density and poor mechanical properties

Method used

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  • Vinyl perfluorinated polyether fluoride silicone oil and preparation method thereof
  • Vinyl perfluorinated polyether fluoride silicone oil and preparation method thereof
  • Vinyl perfluorinated polyether fluoride silicone oil and preparation method thereof

Examples

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Embodiment 1

[0060] This embodiment provides a perfluoropolyether dimethyl ester, the structural formula of which satisfies the formula III, wherein, a+b=20, R 3 =CH 3 , Y=CF 2 CF 2 CF 2 .

[0061] Step 1: Add 10g of anhydrous cesium fluoride (provided by Nanjing Sitaibao Trading Co., Ltd.) and 200g of tetraethylene glycol dimethyl ether (dehydrated and distilled by metal sodium in advance) into the stainless steel reactor under the protection of high-purity nitrogen. Purification, provided by Anhui Yipu Chemical Co., Ltd.), start stirring and cool down to -5°C, add 100g perfluoromalonyl fluoride (provided by Bailingwei Technology Co., Ltd.);

[0062] Step 2: Under the condition of keeping the reaction temperature constant, stir and slowly introduce 300g of hexafluoropropylene oxide (Quzhou Jiangtian Fluorine Chemical Co., Ltd.), and keep the reaction for 12 hours;

[0063] Step 3: Cool the above reaction product to -38°C, continue to feed 2500g of hexafluoropropylene oxide, and keep ...

Embodiment 2

[0067] This embodiment provides a perfluoropolyether dimethyl ester, the structural formula of which satisfies the formula III, wherein, a+b=40, R 3 =CH 3 , Y=CF 2 CF 2 CF 2 .

[0068] In this embodiment, the mass of the added raw material hexafluoropropylene oxide was changed to 4700 g after the temperature was lowered to -38° C. in step 3, and the others were the same as in embodiment 1.

Embodiment 3

[0070] This embodiment provides a perfluoropolyether dimethyl ester, the structural formula of which satisfies the formula III, wherein, a+b=60, R 3 =CH 3 , Y=CF 2 CF 2 CF 2 .

[0071] In this embodiment, the mass of the added raw material hexafluoropropylene oxide was changed to 7000 g after the temperature was lowered to -38° C. in step 3, and the others were the same as in embodiment 1.

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Abstract

The invention relates to a vinyl perfluorinated polyether fluoride silicone oil and preparation method thereof. The vinyl perfluorinated polyether fluoride silicone oil is prepared, as the main materials, from amino silane coupling agent, tetramethyl tetravinyl cyclotetrasiloxane (Vi-D4), hexamethyldisiloxane, and perfluoropolyethers chemical compound. The vinyl perfluorinated polyether fluoride silicone oil has high vinyl functionality, when used for preparing rubber material can obviously increase the force intensity and the anticorrosive functions of rubber. The present invention is simple to prepare and easy to handle.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a polyvinyl perfluoropolyether fluorosilicone oil and a preparation method thereof. Background technique [0002] Fluorosilicone material combines the structure and properties of organic fluorine and silicone, and has the characteristics of low surface energy, high and low temperature resistance, oil and solvent resistance, corrosion resistance, and good insulation. It is widely used in automobiles, electronics, daily chemicals, fields such as medicine and aerospace. Polytrifluoropropylmethylsiloxane (PTFPMS) is the earliest fluorosilicone material developed and applied. It is mainly used in fuel oil-resistant and lubricating oil seals or contact parts of automobiles and aircraft, such as turbocharging of fuel power systems. Tube. However, it cannot resist the corrosion of polar solvents or highly corrosive fluids. By introducing long fluorine-containing chains and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/46C08G77/26C08G65/26
CPCC08G65/2639C08G77/045C08G77/46
Inventor 徐涛王军张恒英盛磊
Owner 太仓中化环保化工有限公司
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