Method for producing damping foamed rubber under cold vulcanization condition

A foamed rubber and cold vulcanization technology, applied in the field of foamed rubber, can solve the problems of difficulty in controlling the foaming rate and high energy consumption.

Inactive Publication Date: 2018-02-02
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the disadvantages of the prior art that the foaming rubber is prepared under melt blending conditions, it is difficult to control the foaming rate and consumes a lot of energy, the present invention provides a method for preparing shock-absorbing foamed rubber under cold vulcanization conditions, which can Control the foaming rate of the foaming agent, so that the pores inside the rubber are uniform and stable, and also reduce energy consumption, save costs, and the preparation process is simple, suitable for industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing shock-absorbing foam rubber under cold vulcanization conditions, comprising the following steps:

[0026] (1) Add 80 parts of silicone rubber powder, 5 parts of sebacic acid dibutyric acid, 2 parts of sodium dodecylbenzenesulfonate, 1 part of zinc oxide powder, and 8 parts of carbon black to a mixture of 40 parts of sulfur chloride and 40 parts of carbon disulfide Completely immerse in the mixed solvent, and then ultrasonically disperse for 15 minutes under the ultrasonic power of 300W, until the dispersion is uniform, and a mixed system is obtained;

[0027] (2) Add 6 parts of CFC-11 foaming agent and 16 parts of zirconia whiskers to the mixing system of step (1), mix well, freeze to -30°C, and freeze the rubber powder into a colloid at low temperature And vulcanized cross-linking;

[0028] (3) Foaming the colloid obtained in step (2) at 100° C. for 1 hour to obtain foamed rubber.

[0029] The foaming ratio of the foamed rubber prepared in this...

Embodiment 2

[0031] A method for preparing shock-absorbing foam rubber under cold vulcanization conditions, comprising the following steps:

[0032] (1) Add 60 parts of chlorinated polyethylene rubber powder, 3 parts of dibutyl phthalate, 2 parts of sodium dodecylbenzenesulfonate, 5 parts of zinc oxide powder, 3 parts of attapulgite modified clay, and add 120 part of dimercaptopropanol until complete immersion, and then ultrasonically disperse for 15 minutes under the ultrasonic power of 300W until the dispersion is uniform, and a mixed system is obtained;

[0033] (2) Add 3 parts of HCFC-141 foaming agent and 10 parts of magnesium oxide whiskers to the mixing system in step (1), mix well, and freeze to -30°C to freeze the rubber powder into a colloid at low temperature And vulcanized cross-linking;

[0034] (3) Foaming the colloid obtained in step (2) at 120° C. for 2 hours to obtain foamed rubber.

[0035]The foaming ratio of the foamed rubber prepared in this example is 1.5 times, and...

Embodiment 3

[0037] A method for preparing shock-absorbing foam rubber under cold vulcanization conditions, comprising the following steps:

[0038] (1) Add 100 parts of butadiene rubber powder, 4 parts of tricresyl phosphate, 2 parts of sodium dodecylbenzenesulfonate, 2 parts of zinc oxide powder, and 12 parts of heavy calcium carbonate powder into 100 parts of sulfur chloride After complete immersion, ultrasonically disperse for 15 minutes under 300W ultrasonic power until the dispersion is uniform and a mixed system is obtained;

[0039] (2) Add 12 parts of HCFC-141b foaming agent and 25 parts of alumina whiskers to the mixing system in step (1), mix well, freeze to -30°C, and freeze the rubber powder into a colloid at low temperature And vulcanized cross-linking;

[0040] (3) Foaming the colloid obtained in step (2) at 80° C. for 4 hours to obtain foamed rubber.

[0041] The foaming ratio of the foamed rubber prepared in this example is 2.0 times, and the average cell diameter of the...

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PUM

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Abstract

The invention relates to the technical field of foamed rubbers, and especially relates to a method for producing damping foamed rubber under a cold vulcanization condition. The method comprises the following steps: adding raw rubber powder and a plasticizer into a sulfur-containing solvent, performing stirring to make the raw rubber powder completely impregnated, adding a foaming agent and an inorganic reinforcement fiber, and freezing the obtained mixture to -30 DEG C to make the rubber powder become a colloid at a low temperature and undergo vulcanization crosslinking; and heating the foaming agent to generate gas to make cells generated in the rubber in order to obtain the foamed rubber. The method for producing the foamed rubber realizes vulcanization and allows carbon disulfide used as the rubber solvent to soften the rubber to make the rubber have plasticity under the cold vulcanization condition, so the rubber is foamed under the condition. The rubber is foamed in a non-molten state, so the energy consumption is greatly reduced, and the cost is saved.

Description

technical field [0001] The invention relates to the technical field of foamed rubber, in particular to a method for preparing shock-absorbing foamed rubber under cold vulcanization conditions. Background technique [0002] Foamed rubber products use rubber as the base material, and use physical foaming or chemical foaming to make the rubber into a sponge-like porous product, which has excellent chemical stability, good electrical insulation performance, aging resistance and waterproof performance. , Widely used in automotive door and window sealant strips, buffer pads, gaskets for building materials, heat insulation materials for low-voltage electrical appliances, shock-absorbing materials, protective components for leisure or sports facilities, etc. During the research and development of foamed rubber, the following issues should be paid attention to: (1) R&D uses energy-saving and low-pollution foaming agents to make foamed rubber products; (2) calcium bicarbonate inorgani...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L23/28C08L9/00C08K13/04C08K5/11C08K5/42C08K3/22C08K3/04C08K3/30C08K7/08C08K5/37C08K3/34C08K5/523C08K3/26C08J9/14
CPCC08J9/144C08J9/145C08J2309/00C08J2323/28C08J2383/04C08K3/04C08K3/22C08K3/26C08K3/30C08K3/346C08K5/11C08K5/37C08K5/42C08K5/523C08K7/08C08K13/04C08K2003/2296C08K2003/265C08L2203/14C08L83/04C08L23/286C08L9/00
Inventor 陈庆昝航
Owner CHENDU NEW KELI CHEM SCI CO LTD
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