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Medium-temperature repairing rubber material, preparation method thereof and application thereof in a 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, good bonding strength, and short vulcanization time

Active Publication Date: 2019-05-07
HUBEI INST OF AEROSPACE CHEMOTECH
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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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  • Medium-temperature repairing rubber material, preparation method thereof and application thereof in a propellant
  • Medium-temperature repairing rubber material, preparation method thereof and application thereof in a propellant
  • Medium-temperature repairing rubber material, preparation method thereof and application thereof in a 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 materi...

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 seque...

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Abstract

The invention relates to a medium-temperature repairing rubber material, a preparation method thereof and an application thereof in a propellant, belonging to the technical field of ablation-resistantmaterials, in particular to a medium-temperature repairing thermal insulating layer material for a high-energy propellant, a thermal insulating layer capable of rapidly vulcanizing at a medium temperature, and a preparation method thereof. The vulcanization system of the invention adopts a vulcanization system of peroxide and accelerator, the thermal insulating material is difficult to absorb nitrate ester, does not affect the ablation performance of the thermal insulating layer, does not affect the interface adhesion performance of the high-energy propellant, and has good adaptability with the interface of the high-energy propellant.

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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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 CHEMOTECH
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