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Double-liquid type liquid rubber for liquid silica gel roller and preparation method thereof

A technology of liquid silica gel and liquid rubber, which is applied in the field of liquid rubber, can solve problems such as inconsistent local performance, uneven solute flow velocity, and influence on the mechanical properties of liquid rubber, and achieve excellent mechanical properties, easy infiltration and dispersion, and improved mechanical properties and The effect of thermal stability

Inactive Publication Date: 2020-07-31
江阴市明达胶辊有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing two-component liquid rubber, when the two liquids are mixed, the filler may disperse in the base material due to the uneven flow velocity of the solute, resulting in inconsistent local properties, resulting in an impact on the mechanical properties of the liquid rubber.

Method used

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  • Double-liquid type liquid rubber for liquid silica gel roller and preparation method thereof
  • Double-liquid type liquid rubber for liquid silica gel roller and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Take the first coupling agent and add absolute ethanol, then add hydrochloric acid to adjust the pH value of the solution to 4, heat up to 65 ° C for pre-hydrolysis for 30 min to obtain solution A, take another absolute ethanol, add silica, and stir for 20 min to prepare a solution B, mix solution A and solution B, heat up to 60°C and reflux for 4h, then cool to room temperature, filter the obtained product, and dry at 75°C for 1h to prepare raw material A;

[0043] Take the second coupling agent and add absolute ethanol, then add hydrochloric acid to adjust the pH value of the solution to 3, heat up to 60 ° C for pre-hydrolysis for 30 minutes to obtain solution C, take another absolute ethanol, add alumina powder, and stir for 20 minutes to prepare a solution D, mix solution C and solution D, heat up to 70°C and reflux for 3h, then cool to room temperature, filter the obtained product, and dry at 80°C for 1h to prepare raw material B;

[0044] Take 21% of raw material ...

Embodiment 2

[0050] Take the first coupling agent and add absolute ethanol, then add hydrochloric acid to adjust the pH value of the solution to 4.5, heat up to 70 ° C for pre-hydrolysis for 45 minutes to obtain solution A, take another absolute ethanol, add silica, and stir for 25 minutes to obtain a solution B. Mix solution A and solution B, heat up to 68°C and stir under reflux for 4.5h, then cool to room temperature, filter the obtained product, and dry at 80°C for 1-2h to prepare raw material A;

[0051] Take the second coupling agent and add absolute ethanol, then add hydrochloric acid to adjust the pH value of the solution to 3.5, heat up to 65 ° C for pre-hydrolysis for 45 minutes to obtain solution C, take another absolute ethanol, add alumina powder, and stir for 25 minutes to obtain a solution D, mix solution C and solution D, heat up to 75°C and reflux for 4h, then cool to room temperature, filter the obtained product, and dry at 85°C for 1.5h to prepare raw material B;

[0052...

Embodiment 3

[0058] Take the first coupling agent and add absolute ethanol, then add hydrochloric acid to adjust the pH value of the solution to 5, heat up to 75 ° C for pre-hydrolysis for 60 min to obtain solution A, take another absolute ethanol, add silica, and stir for 30 min to prepare a solution B. Mix solution A and solution B, heat up to 75°C and stir under reflux for 5h, then cool to room temperature, filter the obtained product, and dry at 85°C for 2h to prepare raw material A;

[0059] Take the second coupling agent and add absolute ethanol, then add hydrochloric acid to adjust the pH value of the solution to 3-4, heat up to 70 ° C for pre-hydrolysis for 60 min to obtain solution C, take another absolute ethanol, add alumina powder, stir for 30 min, prepare Solution D was obtained, solution C was mixed with solution D, the temperature was raised to 80°C and refluxed and stirred for 5h, then cooled to room temperature, the obtained product was filtered, and dried at 90°C for 2h to...

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Abstract

The invention discloses double-liquid type liquid rubber for a liquid silica gel roller and a preparation method thereof. The double-liquid type liquid rubber for the liquid silica gel roller is prepared from the following main components: polydimethylsiloxane, silicon dioxide and aluminum oxide. According to the invention, silicate generated after sintering of the silicon dioxide and the aluminumoxide substantially improves the mechanical properties and thermal stability of silicone rubber; local performance inconsistency caused by dispersion of silicon dioxide and aluminum oxide in the basematerial is avoided; the influence caused by non-uniform flowing speed of a solute when the first component and the second component flow is eliminated, and the surface modification process of the base material polydimethylsiloxane enables the aging resistance, the wear resistance and the adhesive force of the polydimethylsiloxane and the silicone rubber to be improved, so that the prepared silicone rubber roller is more convenient to use in actual production, and is suitable for wide popularization and application.

Description

technical field [0001] The invention relates to the field of liquid rubber, in particular to a two-liquid type liquid rubber for a liquid silicone roller and a preparation method thereof. Background technique [0002] The rubber roller is a roll-shaped product made of metal or other materials as the core and covered with rubber after vulcanization. Liquid silicone rubber is a kind of organic silicone rubber relative to the mixing type semi-solid silicone rubber and the common room temperature vulcanized one-component silicone rubber. Silica gel. However, in the existing two-component liquid rubber, when the two liquids are mixed, the filler may be dispersed in the base material due to the uneven flow rate of the solute, resulting in inconsistent local properties, resulting in an impact on the mechanical properties of the liquid rubber. Therefore, we propose a two-liquid type liquid rubber for liquid silicone rollers and a preparation method thereof. SUMMARY OF THE INVENTI...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08L75/04C08K9/06C08K3/36C08K3/22C08G18/44C08G18/61
CPCC08G18/44C08G18/61C08K2003/2227C08L83/04C08L2201/08C08L75/04C08K9/06C08K3/36C08K3/22
Inventor 汪国鹏汪华辉
Owner 江阴市明达胶辊有限公司
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