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Tough anti-electrostatic double-network silicone hydrogel and preparation method thereof

A technology of silicon hydrogel and double network is applied in the field of toughness and antistatic double network silicon hydrogel and its preparation, which can solve the problem that the hydrogel cannot have mechanical and mechanical properties, self-healing properties, fatigue resistance and antistatic properties at the same time. performance, complex preparation method, low production efficiency and other problems, to achieve the effect of improving comprehensive mechanical and mechanical properties, simple preparation method and high production efficiency

Active Publication Date: 2019-11-15
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a tough antistatic double network silicon hydrogel, which solves the problem that the existing hydrogel cannot simultaneously have good mechanical properties, self-healing properties, and anti-fatigue properties. and antistatic properties
[0006] The present invention also provides a preparation method of tough antistatic double-network silicon hydrogel, which solves the problems of complicated preparation method, difficult control, long time-consuming and low production efficiency in the existing method

Method used

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  • Tough anti-electrostatic double-network silicone hydrogel and preparation method thereof
  • Tough anti-electrostatic double-network silicone hydrogel and preparation method thereof
  • Tough anti-electrostatic double-network silicone hydrogel and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Put 24mL of deionized water into a 100mL beaker, add 3.75g of acrylamide AM, 0.47g of acrylic acid AA and 15mg of N,N-dimethylbisacrylamide dissolved in deionized water, then add 2mL of ethanol, 1g of hexamethyldisiloxane alkane, 3.25g ethyl orthosilicate, 1mL concentrated hydrochloric acid and 5mg potassium persulfate, mix well to obtain a mixed solution, then heat the mixed solution to 70°C, polymerize for 24 hours, and when the polymerization is complete, place the hydrogel in Dialyzed in deionized water to remove residual monomers and hydrochloric acid to prepare the silica hydrogel PAMAA-Si 1MQ (1 represents the volume mL of concentrated hydrochloric acid added, M and Q represent silicon monomers hexamethyldisiloxane and ethyl orthosilicate respectively).

[0043] 1, the silicon hydrogel PAMAA-Si that the present embodiment obtains 1MQ Using a surface resistivity meter to test, the result shows that the surface resistivity is 10 4 Ω, has good antistatic propertie...

Embodiment 2

[0049] Put 24mL of deionized water into a 100mL beaker, add 3.75g of acrylamide AM, 0.47g of acrylic acid AA and 15mg of N,N-dimethylbisacrylamide dissolved in deionized water, then add 2mL of ethanol, 1g of hexamethyldisiloxane alkane, 3.25g tetraethyl orthosilicate, 3mL concentrated hydrochloric acid and 5mg potassium persulfate, mix well to obtain a mixed solution, then heat the mixed solution to 70°C, and react for 24h. Dialyze in deionized water for 24 hours to remove residual monomers and hydrochloric acid, and prepare the silicon hydrogel PAMAA-Si 3MQ (3 represents the volume mL of concentrated hydrochloric acid added, M and Q represent silicon monomers hexamethyldisiloxane and ethyl orthosilicate respectively).

[0050] 1, the silicon hydrogel PAMAA-Si that the present embodiment obtains 3MQ Using a surface resistivity tester, the result shows that the surface resistance is 10 4 Ω, indicating that it has good antistatic properties.

[0051] 2, the silicon hydrogel P...

Embodiment 3

[0056] Put 24mL of deionized water into a 100mL beaker, add 3.75g of acrylamide AM, 0.47g of acrylic acid AA and 15mg of N,N-dimethylbisacrylamide dissolved in deionized water, then add 2mL of ethanol, 3.25g of ethyl orthosilicate , 3mL of concentrated hydrochloric acid and 5mg of potassium persulfate were uniformly mixed to obtain a mixed solution, and then the mixed solution was heated to 70°C, and the polymerization reaction was carried out for 24 hours. After the polymerization reaction, the hydrogel was dialyzed in deionized water for 24 hours to remove residual monomers body and hydrochloric acid, the silicon hydrogel PAMAA-Si was prepared 3Q (3 represents the volume mL of concentrated hydrochloric acid added, and Q represents silicon monomer tetraethyl orthosilicate).

[0057] 1, the silicon hydrogel PAMAA-Si that the present embodiment obtains 3Q Using a surface resistivity tester, the result shows that the surface resistance is 10 4 Ω, has good antistatic properties...

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Abstract

The invention discloses a tough anti-electrostatic double-network silicone hydrogel and a preparation method thereof. The double-network structure consists of a first macromolecule network and a second macromolecule network in mutual intersection, wherein the first macromolecule network is a cross-linking network which is formed by forming a carbon chain polymer prepared by free radicals through addition polymerization and by implementing chemical cross-linking or a hydrophobic association function; and the second macromolecule network is a cross-linking network which is formed by forming a silicon-containing polymer by a silicon-containing monomer through condensation polymerization and by implementing a hydrogen bond function. As an alkene monomer and a silicon monomer are dissolved intoa same system, one-step molding can be achieved through different polymerization mechanisms, processes such as first network drying and secondary swelling can be avoided, the preparation method is simple, the time is short, the production efficiency is high, the cost is low, the obtained double-network silicone hydrogel has excellent toughness, anti-fatigue performance, self recovery and anti-electrostatic properties and is beneficial to industrialization, and the application range of the hydrogel can be widened.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a tough antistatic double-network silicon hydrogel and a preparation method thereof. Background technique [0002] A hydrogel is a material formed from a water-swellable polymer network. Its polymer network can be formed by physical cross-linking or chemical cross-linking. Hydrogels have a high water content and can maintain a fixed shape without dissolving in water and organic solvents. Hydrogels have a wide range of applications in biomedicine, environmental protection, smart electronic devices and other fields. However, the poor mechanical properties of traditional hydrogels have become an important bottleneck restricting their practical applications. [0003] In recent years, many researchers have devoted themselves to improving the mechanical and mechanical properties of hydrogels by designing the structure of hydrogels. For example, the double-netw...

Claims

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Application Information

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IPC IPC(8): C08J3/075C08L33/26C08L83/04C08F220/56C08F220/06C08F222/38C08F220/18C08G77/04
CPCC08F220/56C08J3/075C08J2333/26C08J2383/04C08J2433/26C08J2483/04C08F220/06C08F222/385
Inventor 高晨杨倩玉钟家春郑晓翼赵星宇张雪梅夏益青邹智挥白兰涵附怡清杨婷
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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