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Small pore diameter silicone rubber sponge and preparation method thereof

A technology of silicone rubber and small pore size, applied in the field of small pore size silicone rubber sponge and its preparation, can solve the problems of difficult and uniform dispersion, high cost and high energy consumption, and achieve the effects of uniform cell dispersion, controllable density and small pore size

Inactive Publication Date: 2015-04-22
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this foaming method is inefficient, energy-intensive, and consumes large amounts of inert porogens
In addition, a large amount of particle pore-forming agent is not only difficult to disperse uniformly in the rubber matrix, but also affects the processing performance of rubber
The application number is 201010509638.X, and the patent titled "A Method for Preparing Silicone Rubber Foam by Supercritical Carbon Dioxide Technology" obtains a small-diameter silicone rubber sponge through supercritical carbon dioxide technology, but this preparation technology requires a special process equipment, higher cost

Method used

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  • Small pore diameter silicone rubber sponge and preparation method thereof
  • Small pore diameter silicone rubber sponge and preparation method thereof
  • Small pore diameter silicone rubber sponge and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step A1, preparation of liquid silicone rubber composition: in 100 parts of liquid silicone rubber (glue viscosity 500CS), the liquid silicone rubber here is liquid organosiloxane, preferably in 100 parts of vinyl silicone In alkane (sizing material viscosity 500CS), add 4 parts of hydrogen-containing silicone oil (hydrogen value 1.6g), 1 part of addition reaction inhibitor vinyl ring body (vinyl content is greater than 29%), 2 parts of organoplatinum catalyst (platinum The concentration is 1000PPM), stirring and mixing at 600r / min for 5 minutes to obtain a liquid silicone rubber composition.

[0031] Step A2, preparation of water-in-oil silicone rubber latex: take 50 parts of liquid silicone rubber composition from the above liquid silicone rubber composition, add 4 parts of Gransurf 77 emulsifier (HLB value 4.5, Grant Industries Inc), 50 parts of deionized Water, mixed at 6000r / min for 5 minutes to obtain water-in-oil silicone rubber latex.

[0032] Compared with the...

Embodiment 2

[0035] The difference from Example 1 is that when preparing the liquid silicone rubber composition in step A1, the amount of hydrogen-containing silicone oil is 6 parts, and the rest of the process conditions and operating steps are the same as in Example 1. The performance of the obtained silicone rubber sponge is shown in Table 1.

Embodiment 3

[0037] The difference from Example 1 is that when preparing the water-in-oil silicone rubber latex in step A2, 40 parts of the liquid silicone rubber composition was taken, and 60 parts of deionized water were added, and the rest of the process conditions and operating steps were the same as in Example 1. The performance of the obtained silicone rubber sponge is shown in Table 1.

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Abstract

The invention discloses small pore diameter silicone rubber sponge and a preparation method thereof and relates to the field of processing of high polymer materials. The small pore diameter silicone rubber sponge comprises the following components in parts by weight: a component A: 100 parts of liquid organic silicone rubber; a component B: 3-8 parts of hydrogen-containing silicone oil; a component C: 0.5-10 parts of an emulsifier; a component D: 2-4 parts of a catalyst; a component E: 1-2 parts of an inhibitor; and a component F: 0-35 parts of a silicon resin. An emulsion dispersion mode is adopted, the dispersion phase size is small, and the silicone rubber sponge prepared by the method has the characteristics of bubble dispersion uniformity, small pore diameter and controllable density; and moreover, water serves as a foaming agent, and the sponge has the advantage of environment friendliness. The silicone rubber sponge material prepared by the method can serve as shock absorption, insulating, sound insulation and heat insulation materials.

Description

technical field [0001] The invention relates to the field of polymer material processing, in particular to a small-diameter silicone rubber sponge and a preparation method thereof. Background technique [0002] Silicone rubber sponge material is a porous polymer elastic material prepared by foaming silicone rubber. According to the different cell structures, it can be divided into open-cell, closed-cell, and mixed-pore structure silicone rubber sponges. According to the type of rubber material used and the different preparation methods, silicone rubber sponges can be divided into room temperature vulcanized silicone rubber sponges and high temperature vulcanized silicone rubber sponges (Zhang Jikai, "Organic Silicon Materials", China Matter Publishing House, Beijing, 1999). Room temperature vulcanized silicone rubber sponge is usually based on condensation-type hydroxyl-terminated silicone rubber, hydroxyl silicone oil is used as a foaming agent, platinum complex is used as ...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08L83/07C08L83/05C08J9/28C08J3/24
Inventor 赵祺芦艾余凤湄贺江平刘涛雷雅杰王宪忠孙素明刘天利
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS