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High-thermal-insulation ablation-resistant sizing material

A technology of ablation resistance and rubber compound, which is applied in the field of thermal insulation rubber compound, can solve the problems of density, elongation at break and ablation resistance, etc., and achieve high tensile strength, high shear strength and low density Effect

Inactive Publication Date: 2015-12-09
中国化工集团曙光橡胶工业研究设计院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Current insulating materials are not ideal in terms of density, elongation at break, and ablation resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The mass parts of each component are: 100 parts of EPDM rubber, 10 parts of decabromodiphenyl ether, 10 parts of antimony trioxide, 30 parts of white carbon black, 5 parts of zinc oxide, 1 part of stearic acid, 0.32 1 part of surface treatment agent si69, 5 parts of paraffin oil, 2 parts of ordinary sulfur, 2 parts of accelerator ZDC, 0.5 parts of accelerator DM and 1.2 parts of accelerator TMTD, and mix them evenly through an internal mixer.

[0032] The mechanical properties of the prepared high heat insulation and ablation resistant compound are shown in Table 1.

[0033] Example 2:

Embodiment 2

[0035] The mass parts of each component are: 100 parts of EPDM rubber, 15 parts of decabromodiphenyl ether, 15 parts of antimony trioxide, 30 parts of white carbon black, 5 parts of zinc oxide, 1 part of stearic acid, 0.32 1 part of surface treatment agent si69, 6 parts of paraffin oil, 2 parts of ordinary sulfur, 2 parts of accelerator ZDC, 0.5 parts of accelerator DM and 1.2 parts of accelerator TMTD, and mix them evenly through an internal mixer.

[0036] The mechanical properties of the prepared high heat insulation and ablation resistant compound are shown in Table 1.

[0037] Example 3:

Embodiment 3

[0039] The mass parts of each component are: 100 parts of EPDM rubber, 20 parts of decabromodiphenyl ether, 20 parts of antimony trioxide, 35 parts of white carbon black, 5 parts of zinc oxide, 1 part of stearic acid, 0.5 parts of 1 part of surface treatment agent si69, 5 parts of paraffin oil, 2 parts of ordinary sulfur, 2 parts of accelerator ZDC, 0.5 parts of accelerator DM and 1.2 parts of accelerator TMTD, and mix them evenly through an internal mixer.

[0040] The mechanical properties of the prepared high heat insulation and ablation resistant compound are shown in Table 1.

[0041] Table 1: Mechanical Properties of Compounds

[0042] project Example 1 Example 2 Example 3 Vulcanization conditions 160 o C×50′ 160 o C×50′ 160 o C×50′ Tensile strength, MPa 10.5 10.9 11.2 Elongation at break,% 452 460 469 Density, Mg / m 3 0.93 0.96 1.02 Thermal conductivity, W / km 0.12 0.10 0.097 Oxyacetylene ablation rate, mm / s...

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PUM

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Abstract

The invention relates to a high-thermal-insulation ablation-resistant sizing material. Ethylene propylene terpolymer serves as the main material, flame retardant, synergistic effect flame retardant, reinforcing agents and active agents are matched to serve as auxiliary materials, the main material and the auxiliary materials are mixed according to a certain weight ratio, mixing is conducted through an internal mixer, a rubber compound is prepared out, and the rubber compound is prepared into semi-finished glue in an extruding mode through an extruder. Compared with the prior art, the high-thermal-insulation ablation-resistant sizing material has the advantages of being high in tensile strength, low in density, small in thermal conductivity, high in shearing strength with an enhancement layer material, high in adhesive strength with the enhancement layer material and the like and can be applied to the field of solid rocket engine internal insulation layer materials.

Description

technical field [0001] The invention relates to a heat-insulating rubber compound, in particular to a high heat-insulating and ablation-resistant rubber compound. Background technique [0002] The inner insulation material is an essential and important part of the solid rocket motor. It is a layer of heat insulation and ablation-resistant material between the engine casing and the solid propellant. Its important function is to protect the integrity of the shell structure during the ignition of the engine, and to protect the engine shell from losing strength and burning through in the environment of high temperature and high pressure gas, so as to ensure the normal operation of the engine; but it is also the engine Part of the negative quality. Current insulating materials are not ideal in terms of density, elongation at break, and ablation resistance. [0003] Compared with other diene rubbers, EPDM rubber not only has excellent heat resistance, oxygen resistance, ozone re...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L91/06C08K13/02C08K5/06C08K3/22C08K3/36C08K5/09C08K5/548C08K3/06
CPCC08L23/16C08L2201/02C08L91/06C08K13/02C08K5/06C08K3/2279C08K3/36C08K2003/2296C08K5/09C08K5/548C08K3/06
Inventor 李善荣周胜
Owner 中国化工集团曙光橡胶工业研究设计院有限公司
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