a kind of sio 2 Synthetic method of hybrid comb-like organofluorosilicon copolymer

An organic fluorine and copolymer technology is applied in the synthesis field of nano-SiO2 hybrid comb-shaped organic fluorosilicon copolymer, which can solve the problems of low washing resistance of waterproof fabrics and achieve the effect of good softness

Active Publication Date: 2020-12-01
GUANGZHOU SYSMYK NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention proposes a nano-SiO 2 The synthetic method of hybrid comb-shaped organic fluorosilicon copolymer, the nano-SiO synthesized by the present invention 2 The waterproof fabric prepared by the hybrid comb-like organic fluorosilicon copolymer improves the defects of the low washing resistance of the waterproof fabric in the prior art

Method used

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  • a kind of sio <sub>2</sub> Synthetic method of hybrid comb-like organofluorosilicon copolymer
  • a kind of sio <sub>2</sub> Synthetic method of hybrid comb-like organofluorosilicon copolymer
  • a kind of sio <sub>2</sub> Synthetic method of hybrid comb-like organofluorosilicon copolymer

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Effect test

Embodiment 1

[0023] According to the content provided by the present invention, the inventor makes nano-SiO according to the following method 2 Hybrid comb-like organofluorosilicon copolymer 1:

[0024] Step 1: Add 100g of tetraethyl orthosilicate, 80g of absolute ethanol, and 25g of deionized water into a three-necked flask, stir, raise the temperature to 60°C, add 70ml of ammonia water dropwise, keep the temperature for 4 hours, hydrolyze and polycondense to obtain nano-scale translucency , Alkaline SiO 2 sol; then, add 20g of γ-aminopropyltriethoxysilane to the above sol for reflux reaction for 2h, then repeatedly wash, centrifuge, and vacuum dry to obtain a white powdery aminopropyl-modified SiO 2 ;

[0025] In a 250ml three-necked flask equipped with a stirrer, a thermometer and a reflux condenser, successively add metered hydrogen-containing silicone oil, perfluorooctylethylene and allyl glycidyl ether, the Si-H bond of the hydrogen-containing silicone oil and The molar ratio of t...

Embodiment 2

[0029] According to the content provided by the present invention, the inventor makes nano-SiO according to the following method 2 Hybrid comb-like organofluorosilicon copolymer 2:

[0030] Step 1: Add 100g of tetraethyl orthosilicate, 80g of absolute ethanol, and 25g of deionized water into a three-necked flask, stir, heat up to 60°C, add 70ml of ammonia water dropwise, keep the temperature for 6 hours, hydrolyze and polycondense to obtain nano-scale translucency , Alkaline SiO 2 sol; then, add 20g of γ-aminopropyltriethoxysilane to the above sol for reflux reaction for 3h, then wash repeatedly, centrifuge, and dry in vacuum to obtain white powdery aminopropyl-modified SiO 2 ;

[0031] In a 250ml three-necked flask equipped with a stirrer, a thermometer and a reflux condenser, successively add metered hydrogen-containing silicone oil, perfluorooctylethylene and allyl glycidyl ether, the Si-H bond of the hydrogen-containing silicone oil and The molar ratio of the sum of the...

Embodiment 3

[0035] According to the content provided by the present invention, the inventor makes nano-SiO according to the following method 2 Hybrid comb-like organofluorosilicon copolymer 3:

[0036] Step 1: Add 100g of tetraethyl orthosilicate, 80g of absolute ethanol, and 25g of deionized water into a three-necked flask, stir, raise the temperature to 60°C, add 70ml of ammonia water dropwise, keep the temperature for 5 hours, hydrolyze and polycondense to obtain nano-scale translucency , Alkaline SiO 2 sol; then, add 20g of γ-aminopropyltriethoxysilane to the above sol for reflux reaction for 2.5h, then wash repeatedly, centrifuge, and vacuum dry to obtain a white powdery aminopropyl-modified SiO 2 ;

[0037] In a 250ml three-necked flask equipped with a stirrer, a thermometer and a reflux condenser, successively add metered hydrogen-containing silicone oil, perfluorooctylethylene and allyl glycidyl ether, the Si-H bond of the hydrogen-containing silicone oil and The molar ratio of...

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Abstract

The invention discloses a method for synthesizing a nano-SiO2 hybrid combed organic fluorosilicon copolymer. Aminopropyl modified SiO2 and a combed organic fluorosilicon copolymer are prepared first,and then the nano-SiO2 hybrid combed organic fluorosilicon copolymer is prepared. A waterproof fabric having a super hydrophobic effect and a good softness is produced in a one-step manner through adopting a padding and baking finishing technology by adopting the prepared nano-SiO2 hybrid combed organic fluorosilicon copolymer as a treatment fluid with a fabric as a substrate, the hydrophobic angle of the waterproof fabric reaches 161 DEG, the water droplet rolling angle of the waterproof fabric can reach 7 DEG, and the waterproof fabric can be washed with water for about 32 times.

Description

technical field [0001] The present invention relates to a kind of nano SiO 2 Synthesis method of hybrid comb-like organofluorosilicon copolymer. Background technique [0002] The strength and other properties of the fabrics coated with hydrophobic coatings will decrease after repeated washing during use, and the washing resistance will be poor. Contents of the invention [0003] The present invention proposes a nano-SiO 2 The synthetic method of hybrid comb-shaped organic fluorosilicon copolymer, the nano-SiO synthesized by the present invention 2 The waterproof fabric prepared by the hybrid comb-shaped organic fluorosilicon copolymer improves the defect of low washing resistance of the waterproof fabric in the prior art. [0004] The technical scheme of the present invention is realized like this: a kind of nano-SiO 2 The synthetic method of hybrid comb-shaped organic fluorosilicon copolymer is characterized in that comprising the following steps: [0005] Step 1: Ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/385C08G77/388D06M15/657C01B33/18
CPCC01B33/18C08G77/385C08G77/388D06M15/657
Inventor 龚红升
Owner GUANGZHOU SYSMYK NEW MATERIAL TECH CO LTD
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