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Silicon rubber airbag material for manufacturing engine heat insulating layer

A thermal insulation layer and silicone rubber technology, applied in the field of silicone rubber airbag materials, can solve the problems of poor tear resistance, large pressure loss, and low use times, and achieve stable rubber performance, high qualification rate, and reduce accidental damage. effect of chance

Inactive Publication Date: 2015-11-18
ANQING SPECIAL RUBBER & PLASTIC PROD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nitrile rubber and butyl rubber airbags currently used have reasons such as large pressure loss, difficulty in separation, and short service life. Therefore, research on silicone rubber airbags has also been carried out in recent years.
The study found that the silicone rubber material has problems such as low strength and poor tear resistance, which makes the silicone rubber airbag product easy to break during use and the number of times of use is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 100 parts of raw rubber, 30 parts of white carbon black, 1 part of structure control agent, 2 parts of colorant and 0.5 part of vulcanizing agent.

[0029] The preparation method of above-mentioned material, concrete steps are:

[0030] 1) Use an internal mixer to mix the raw materials, first add raw silicone rubber, refine at 50°C for 1-3min, then add white carbon black and structure control agent according to the formula, and refine at 50-90°C for 40- 60min, finally add vulcanizing agent and coloring agent, refining at 50~60℃ for 20~25min;

[0031] 2) After the mixing is completed, store the rubber material for 24h-48h, then carry out vacuum mixing, the refining time is 20-30min, the temperature is ≤40°C, and the air residual pressure is controlled to be ≤20mmHg;

[0032] 3) Put the rubber compound obtained in step 2) in the material cabin of the extruder, and carry out vacuum extrusion. The number of extrusions is 2 to 3 times to obtain the material. The air residua...

Embodiment 2

[0039] 100 parts of raw rubber, 60 parts of white carbon black, 5 parts of structure control agent, 5 parts of reinforcing agent and 1 part of vulcanizing agent.

[0040] The preparation method of above-mentioned material, concrete steps are:

[0041] 1) Use an internal mixer to mix the raw materials, first add raw silicone rubber, refine at 50°C for 1-3min, then add white carbon black, structure control agent and heat-resistant additive according to the formula, and heat at 50-90°C Refining for 40-60min, finally adding vulcanizing agent, refining at 50-60℃ for 20-25min;

[0042] 2) After the mixing is completed, store the rubber material for 24h-48h, then carry out vacuum mixing, the refining time is 20-30min, the temperature is ≤40°C, and the air residual pressure is controlled to be ≤20mmHg;

[0043] 3) Put the rubber compound obtained in step 2) in the material cabin of the extruder, and carry out vacuum extrusion. The number of extrusions is 2 to 3 times to obtain the ma...

Embodiment 3

[0050] 100 parts of raw rubber, 40 parts of white carbon black, 3 parts of structure control agent, 5 parts of heat-resistant additive and 0.7 part of vulcanizing agent.

[0051] The preparation method of above-mentioned material, concrete steps are:

[0052] 1) Use an internal mixer to mix the raw materials, first add raw silicone rubber, refine at 50°C for 1-3min, then add white carbon black, structure control agent, and heat-resistant additives according to the formula, and heat at 50-90°C Refining for 40-60min, finally adding vulcanizing agent, refining at 50-60℃ for 20-25min;

[0053] 2) After the mixing is completed, store the rubber material for 24h-48h, then carry out vacuum mixing, the refining time is 20-30min, the temperature is ≤40°C, and the air residual pressure is controlled to be ≤20mmHg;

[0054] 3) Put the rubber compound obtained in step 2) in the material cabin of the extruder, and carry out vacuum extrusion. The number of extrusions is 2 to 3 times to obt...

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Abstract

The invention discloses a silicon rubber airbag material for manufacturing an engine heat insulating layer. The silicon rubber airbag material is prepared from the following raw materials in parts by weight: 100 parts of crude rubber, 30-60 parts of white carbon black, 1-5 parts of structural control agent and 0.5-1 part of vulcanizing agent; and the silicon rubber airbag material also can comprise 0-10 parts of reinforcing agent, 0-10 parts of heat-resistance additive and 2-5 parts of coloring agent. The rubber material produced through a formula provided by the invention is stable in performance, the qualified rate of a manufactured finished product is high and reaches 98% to 99%, and the material has the performances of high strength, tearing resistance and high temperature resistance, so that the probability of accidental damage in the using process is greatly reduced, the service life is improved to be more than 20 from 2-3 originally, the durability of the silicon rubber airbag is improved, and the production cost is obviously reduced.

Description

technical field [0001] The invention belongs to the technical field of engine heat insulation layer preparation, and in particular relates to a silicon rubber airbag material used for the manufacture of engine heat insulation layer. Background technique [0002] In the manufacturing process of the solid rocket motor insulation layer, the curing molding process mainly adopts the rubber airbag pressurization and heating curing molding process. The nitrile rubber and butyl rubber airbags currently used have reasons such as large pressure loss, difficulty in separation, and short service life. Therefore, research on silicone rubber airbags has also been carried out in recent years. Studies have found that silicone rubber materials have problems such as low strength and poor tear resistance, which make silicone rubber airbag products easy to break during use and the number of times of use is low. Contents of the invention [0003] The invention provides a silicone rubber...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/06C08K13/02C08K3/22C08K5/14C08K3/36
Inventor 马自坤朱稼麟杨瑞楼祝世杰焦士六李勇鲍明生王菲宋铭汪沁孙丽娜胡晓亮马良科
Owner ANQING SPECIAL RUBBER & PLASTIC PROD
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