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Preparation method for nano SiO2 hybrid comb organic fluorine-silicon copolymer as well as product and application of copolymer

A technology of organic fluorine and copolymer, which is applied in the field of preparation of nano-SiO2 hybrid comb-shaped organic fluorine-silicon copolymer, which can solve the problems of short service life, impervious to washing, easy wear, etc., and achieve simple steps, high hydrophobic angle, high efficiency effect

Active Publication Date: 2016-05-25
GUANGZHOU SYSMYK NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the existing superhydrophobic materials used in textiles have a high water droplet contact angle, they also have disadvantages such as low strength, easy wear, easy pollution, not washable, and short service life.

Method used

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  • Preparation method for nano SiO2 hybrid comb organic fluorine-silicon copolymer as well as product and application of copolymer
  • Preparation method for nano SiO2 hybrid comb organic fluorine-silicon copolymer as well as product and application of copolymer
  • Preparation method for nano SiO2 hybrid comb organic fluorine-silicon copolymer as well as product and application of copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of nano-SiO 2 A method for preparing a hybrid comb-like organic fluorosilicon copolymer, comprising the following steps:

[0027] S1: Epoxy-modified SiO 2 Preparation of:

[0028] (1) Modified SiO 2 Synthesis of the dispersion: 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, and keep the temperature at 60°C for 4 to 5 hours. Hydrolysis and polycondensation reaction to obtain nano-scale translucent, basic SiO 2 Sol;

[0029] (2) In the above SiO 2 Add 20g of 3-glycidoxypropyltrimethoxysilane to the sol for reflux reaction for 3 to 4 hours, then repeatedly wash, centrifuge, and vacuum dry to obtain a white powdery epoxy-modified SiO 2 ;

[0030] The equation of the S1 step is as follows:

[0031]

[0032] S2: Nano SiO 2 Preparation of hybrid comb-like organofluorosilicon copolymer:

[0033] (1) In a 250ml three-necked flask eq...

Embodiment 2

[0042] A kind of nano-SiO 2 A method for preparing a hybrid comb-like organic fluorosilicon copolymer, comprising the following steps:

[0043] S1: Epoxy-modified SiO 2 Preparation of:

[0044] (1) Modified SiO 2 Synthesis of the dispersion: 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, continue to heat up, and keep the temperature at 70°C for 5-6 Hours, through hydrolysis and polycondensation reactions, nano-scale translucent, basic SiO 2 Sol;

[0045] (2) In the above SiO 2 Add 20g of 3-glycidoxypropyltrimethoxysilane to the sol for reflux reaction for 3 to 4 hours, then repeatedly wash, centrifuge, and vacuum dry to obtain a white powdery epoxy-modified SiO 2 ;

[0046] S2: Nano SiO 2 Preparation of hybrid comb-like organofluorosilicon copolymer:

[0047] (1) In a 250ml three-necked flask equipped with a stirrer, a thermometer and a refl...

Embodiment 3

[0053] A kind of nano-SiO 2 A method for preparing a hybrid comb-like organic fluorosilicon copolymer, comprising the following steps:

[0054] S1: Epoxy-modified SiO 2 Preparation of:

[0055] (1) Modified SiO 2 Synthesis of the dispersion: 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 at 60°C for 4 to 6 hours, and After hydrolysis and polycondensation reactions, nano-scale translucent, basic SiO 2 Sol;

[0056] (2) In the above SiO 2 Add 20g of 3-glycidoxypropyltrimethoxysilane to the sol for reflux reaction for 3 to 4 hours, then repeatedly wash, centrifuge, and vacuum dry to obtain a white powdery epoxy-modified SiO 2 ;

[0057] S2: Nano SiO 2 Preparation of hybrid comb-like organofluorosilicon copolymer:

[0058] (1) In a 250ml three-necked flask equipped with a stirrer, a thermometer and a reflux condenser, sequen...

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Abstract

The invention discloses a preparation method for a nano SiO2 hybrid comb organic fluorine-silicon copolymer. The method comprises the following steps: sufficiently stirring epoxy modified SiO2 and PAMS (amino silicone oil), and PFGE (perfluoroethylhexyl glycidyl ether) in a 250l three-mouth flask; introducing nitrogen for 10 to 20 minutes; heating to raise the temperature to 80 to 100 DEG C, and carrying out heat-preserved reaction for 2 to 5 hours and then stopping heating; cooling to room temperature; filtering with filter cloth to remove large-grained substances to obtain filtrate; charging the filtrate to a four-mouth flask, raising the temperature to a reflux state, and meanwhile carrying out reduced-pressure distillation to remove a solvent to finally obtain the nano SiO2 hybrid comb organic fluorine-silicon copolymer. The obtained nano SiO2 hybrid comb organic fluorine-silicon copolymer is applied to construct a waterproof fabric which has a super-hydrophobic effect and favorable softness. The preparation method disclosed by the invention is simple in step and high in efficiency; compared with other hydrophobic polymers, the nano SiO2 hybrid comb organic fluorine-silicon copolymer has higher hydrophobic angle and longer wear-resistance times when being used for textiles, and the wear-resistance times can be as high as over 10 times.

Description

technical field [0001] The invention relates to superhydrophobic materials, in particular to a nano-SiO 2 A preparation method of a hybrid comb-shaped organic fluorosilicon copolymer, its products and applications. Background technique [0002] The diversity of nature and the multifunctionality of organisms have always been the source of inspiration for scientific researchers. Many artificial materials are designed according to certain aspects of the function and structure of organisms. Superhydrophobic materials are a class of biomimetic materials with super water repellency developed in recent years. On the surface of superhydrophobic materials, the contact angle of more than 150° makes it difficult for water droplets to spread or wet the surface. Therefore, superhydrophobic materials can remain dry and clean after contact with water. This kind of materials has good application prospects in many fields such as textiles, electronic equipment, automobiles and construction....

Claims

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Application Information

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IPC IPC(8): C08G83/00D06M15/643
CPCC08G83/001D06M15/643D06M2200/12
Inventor 龚红升蒋卫中徐向东
Owner GUANGZHOU SYSMYK NEW MATERIAL TECH CO LTD
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