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A kind of medium temperature repairing rubber material and its preparation method and application in propellant

A rubber material, medium temperature technology, applied in the field of ablation-resistant materials, can solve problems affecting the quality and reliability of engine products, achieve good mechanical properties, not easy to absorb, and good application prospects

Active Publication Date: 2021-07-09
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These defects may appear in intermediate products of engine manufacturing (such as composite engine metal-insulation layer molded heads) or in the insulation layer of charged engines, and will definitely affect the engine if suitable remedial measures are not taken Product Quality and Reliability

Method used

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  • A kind of medium temperature repairing rubber material and its preparation method and application in propellant
  • A kind of medium temperature repairing rubber material and its preparation method and application in propellant
  • A kind of medium temperature repairing rubber material and its preparation method and application in propellant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] See Table 3 for the composition and formula of the medium-temperature repair rubber material;

[0047] Table 3 Composition and formula of moderate temperature repair rubber material in embodiment 1

[0048] serial number basic component Proportion effect 1 EPDM 100 base rubber 2 PA 10 organic fiber 3 ZnO 3 Metal oxide 4 SiO 2

20 Reinforcing filler 5 LPO 10 plasticizer 6 app 10 flame retardant 7 RD 1 Antiaging agent 8 CHP 5 Vulcanizing agent 9 DW 5 vulcanization accelerator

[0049] (1) stocking: stocking according to the proportioning of embodiment 1 in table 3;

[0050] (2) Mixing: according to EPDM thin pass 3 times → aramid fiber

[0051] PA→ZnO→SiO 2 →LPO→APP→RD→Vulcanizing agent→Thin pass 6 times→Vulcanization accelerator→Thin pass sheet to refine medium-temperature repair rubber material in sequence;

[0052] When preparing the rubber compound, it is necessar...

Embodiment 2

[0058] See Table 5 for the composition and formulation of the medium temperature repair rubber material;

[0059] Composition and formula of middle temperature repair rubber material in table 5 embodiment 2

[0060]

[0061]

[0062] (1) material preparation: prepare materials according to the proportioning of embodiment 2 in table 5;

[0063] (2) Mixing: according to EPDM thin pass 3 times → aramid fiber

[0064] PA→ZnO→SiO 2 →LPO→APP→RD→Vulcanizing agent→Thin pass 6 times→Vulcanization accelerator→Thin pass sheet to refine EPDM thermal insulation material in sequence.

[0065] When preparing the rubber compound, it is necessary to avoid mixing the accelerator and the vulcanizing agent together, and there is direct contact, in order to prevent the rapid decomposition of the hydrogen peroxide compound. The correct method of mixing operation is to first fully and evenly disperse the vulcanizing agent into the raw rubber, and then slowly add the vulcanization accelerato...

Embodiment 3

[0071] See Table 7 for the composition and formula of the medium-temperature repair rubber material;

[0072] Composition and formula of middle temperature repair rubber material in table 7 embodiment 3

[0073] serial number basic component Proportion effect 1 EPDM 100 base rubber 2 PA 10 organic fiber 3 ZnO 3 Metal oxide 4 SiO 2

20 Reinforcing filler 5 LPO 10 plasticizer 6 app 15 flame retardant 7 RD 1 Antiaging agent 8 CHP 7 Vulcanizing agent 9 DW 4 vulcanization accelerator

[0074] (1) stocking: stocking according to the proportioning of embodiment 3 in table 1;

[0075] (2) Mixing: according to EPDM thin pass 3 times → aramid fiber

[0076] PA→ZnO→SiO 2 →LPO→APP→RD→Vulcanizing agent→Thin pass 6 times→Vulcanization accelerator→Thin pass sheet to refine EPDM thermal insulation material in sequence.

[0077] When preparing the rubber compound, it is necessary to avoid ...

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Abstract

The invention relates to a medium-temperature repairing rubber material and its preparation method and application in propellants, belonging to the technical field of ablation-resistant materials, in particular to a medium-temperature repairing insulation layer material for high-energy propellants, which can be used at medium temperatures Heat insulating layer capable of rapid vulcanization and method for making same. The vulcanization system of the present invention adopts the vulcanization system of peroxide plus accelerator, the heat insulating material is not easy to absorb nitrate, does not affect the ablation performance of the heat insulating layer, and does not affect the interface bonding performance of the high-energy propellant, and the interface with the high-energy propellant has Better adaptability.

Description

technical field [0001] The invention relates to a medium-temperature repairing rubber material and its preparation method and application in propellants, belonging to the technical field of ablation-resistant materials, in particular to a medium-temperature repairing insulation layer material for high-energy propellants, which can be used at medium temperatures Heat insulating layer capable of rapid vulcanization and method for making same. Background technique [0002] EPDM thermal insulation material is mainly based on EPDM rubber mixed with additives such as flame retardants, fibers and inorganic fillers. It has low density, aging resistance, ablation resistance, good thermal insulation performance and excellent mechanical properties. It has become the main research and development direction of thermal insulation materials in solid rocket motors. In recent years, it has been successfully applied in the new generation of solid intercontinental missiles, medium-range surfac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08L77/00C08K13/02C08K5/14C08K3/22C08K3/36B29C35/02
Inventor 周俊王明超吴磊陈德宏陈雯陈馨任雯君何永祝凌玲
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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