Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of hydrophilic polysiloxane copolymer and its preparation method and application, wear-resistant self-lubricating anti-fog coating and its preparation method

A technology of siloxane copolymer and polysiloxane, applied in the field of materials, can solve the problems of complexity and poor mechanical wear resistance, and achieve the effects of easy scale-up production, lower friction coefficient and good application prospects.

Active Publication Date: 2021-03-09
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Superhydrophilic coatings have attracted much attention because water droplets can spread quickly on their surfaces and have excellent anti-fog effects, such as inorganic titanium dioxide coatings, hydrophilic polymer coatings, etc., but the preparation of most superhydrophilic coatings is usually Complicated steps are required, and the mechanical wear resistance is poor. For example, Chinese patent CN201710815545.1 discloses a titanium dioxide anti-fog coating, which needs to be heated to 400-500°C for high-temperature curing; Chinese patent CN201910144043. Lianchao hydrophilic anti-fog coating, the preparation process involves resin synthesis, modification of silica sol, modification of surfactant, and process compounding process of crosslinking agent and auxiliary agent

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of hydrophilic polysiloxane copolymer and its preparation method and application, wear-resistant self-lubricating anti-fog coating and its preparation method
  • A kind of hydrophilic polysiloxane copolymer and its preparation method and application, wear-resistant self-lubricating anti-fog coating and its preparation method
  • A kind of hydrophilic polysiloxane copolymer and its preparation method and application, wear-resistant self-lubricating anti-fog coating and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0041] The present invention also provides the preparation method of the hydrophilic polysiloxane copolymer described in the above technical scheme, comprising the following steps:

[0042] α-Butyldimethylsiloxane-ω-3-methacryloxypropylene polysiloxane and hydrophilic monomers are polymerized under a free radical initiator to obtain a compound having the structure shown in formula I Hydrophilic polysiloxane copolymer; the hydrophilic monomer is 3-sulfonic acid propyl methacrylate potassium salt, dimethylaminoethyl methacrylate, dimethyl butyl ammonium bromide Or [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium hydroxide.

[0043] The present invention has no special limitation on the sources of the α-butyldimethylsiloxane-ω-3-methacryloxypropylene polysiloxane and hydrophilic monomers, and adopts methods well known to those skilled in the art. The preparation method or purchase of commercially available products, specifically, α-butyldimethylsiloxane-ω-3-methacrylox...

Embodiment 1

[0059] (1) Take α-butyldimethylsiloxane-ω-3-methacryloxypropyl polysiloxane 10g (number average molecular weight 1000), dimethylaminoethyl methacrylate 14.3g, azo Add 0.24 g of diisobutyronitrile and 20 g of xylene as a solvent into a three-necked flask. After purging with nitrogen for 20 minutes, heat up to 85° C. and react for 5 hours to obtain a hydrophilic polysiloxane copolymer solution.

[0060] (2) Precipitate the polymer with n-hexane from the copolymer solution obtained above, and dry it to obtain a pure hydrophilic polysiloxane copolymer.

[0061] (3) Dilute the above polymer with ethanol to a mass concentration of 1% for later use.

[0062] (4) After the PET substrate is ultrasonically cleaned with ethanol, it is dried at room temperature for later use.

[0063] (5) Spin-coat the polymer solution in step (2) on the above-mentioned clean PET substrate, the spin-coating process: the rotation speed is 500 rpm, and the time is 30 seconds.

[0064] (6) Remove the PET f...

Embodiment 2

[0068] (1) Get α-butyl dimethyl siloxane-ω-3-methacryloxypropyl polysiloxane 10g (number average molecular weight 1000), dimethyl butyl ammonium bromide 15.8g , 0.24g of azobisisobutyronitrile and 20g of xylene as a solvent were added to a three-necked flask. After purging with nitrogen for 20 minutes, the temperature was raised to 85°C and reacted for 5 hours to obtain a hydrophilic polysiloxane copolymer solution.

[0069] (2) Precipitate the polymer with n-hexane from the copolymer solution obtained above, and dry it to obtain a pure hydrophilic polysiloxane copolymer.

[0070] (3) Dilute the above polymer with ethanol to a mass concentration of 1% for later use.

[0071] (4) After the PET substrate is ultrasonically cleaned with ethanol, it is dried at room temperature for later use.

[0072] (5) Spin-coat the polymer solution in step (2) on the above-mentioned clean PET substrate, the spin-coating process: the rotation speed is 500 rpm, and the time is 30 seconds.

[00...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
coating massaaaaaaaaaa
Login to View More

Abstract

The invention provides a hydrophilic polysiloxane copolymer, a preparation method and application thereof, a wear-resistant self-lubricating anti-fog coating and a preparation method thereof, and belongs to the field of material technology. The present invention provides a kind of hydrophilic polysiloxane copolymer, the solution of this copolymer can be coated on the substrate layer and can prepare a kind of wear-resisting self-lubricating anti-fog coating, this hydrophilic polysiloxane The copolymer contains flexible polysiloxane segments, which can be self-assembled on the surface of the substrate layer to achieve anti-friction and anti-wear effects, thus having excellent self-lubricating and wear-resistant effects, and it has Its hydrophilic properties can quickly absorb tiny droplets under fogging conditions to achieve anti-fogging effect, endowing the copolymer with excellent anti-fogging effect.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a hydrophilic polysiloxane copolymer, a preparation method and application thereof, a wear-resistant self-lubricating anti-fog coating and a preparation method. Background technique [0002] Condensation fog will cause image distortion, decrease light transmittance, fogging of glasses and goggles affects people's sight, fogging of lenses and optical devices affects analysis results, and fogging of motorcycle windshield seriously affects driving safety. In a word, coating materials with anti-fog function have broad prospects for application in the fields of people's production and life. Superhydrophilic coatings have attracted much attention because water droplets can spread quickly on their surfaces and have excellent anti-fog effects, such as inorganic titanium dioxide coatings, hydrophilic polymer coatings, etc., but the preparation of most superhydrophilic coatings is usuall...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/12C08F220/34C08F220/38C09D151/08C08J7/054C08J7/056C08J7/046C08L67/02
CPCC08F283/124C08J2367/02C08J2451/08C09D151/085C08J7/0427C08J7/046C08J7/054C08J7/056C08F220/34C08F220/387C08F220/382
Inventor 周峰吴杨马正峰蔡美荣
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI