High-strength anti-aging rubber material for flexible plug cap for solid rocket engine nozzle, and preparation method thereof

An engine nozzle, solid rocket technology, applied in the field of rubber materials, can solve the problems affecting the anti-aging performance of products, difficult to achieve tensile strength, poor product appearance quality, etc., to avoid blooming phenomenon, high strength and anti-aging. High-quality, high-quality effects

Inactive Publication Date: 2018-02-02
湖北三江航天江北机械工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of flexible plugging material mainly has the following problems: 1) the tensile strength is difficult to reach more than 20MPa; 2) after a period of storage of the molded product, the surface of the molded product will appear frosting, which will not only damage the perf

Method used

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  • High-strength anti-aging rubber material for flexible plug cap for solid rocket engine nozzle, and preparation method thereof
  • High-strength anti-aging rubber material for flexible plug cap for solid rocket engine nozzle, and preparation method thereof
  • High-strength anti-aging rubber material for flexible plug cap for solid rocket engine nozzle, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A high-strength anti-aging rubber material for the flexible plug of a solid rocket motor nozzle. The main raw material contained is first-grade smoked sheet rubber produced in Indonesia. The quality of the first-grade smoked sheet rubber is 5kg. The mass ratio of the compounding agent is as follows:

[0036]

[0037]

[0038] The above-mentioned raw materials are prepared into a high-strength anti-aging rubber material for the flexible plug of the solid rocket motor nozzle according to the following steps:

[0039] 1) Plasticizing the smoked sheet rubber: pass the broken smoked sheet rubber on the open mill for 2 to 3 times with a small roll distance of 1 to 2 mm, then twist the film by 90° and put it back into the roll gap, reciprocating More than 5 times or until the specified time, each section shall not exceed 20 minutes, and the temperature of the roller shall be controlled at 40 ℃ ~ 50 ℃; after plasticizing, it shall be parked for 4 hours before entering the ...

Embodiment 2

[0043] According to the preparation steps of Example 1, a kind of high-strength anti-aging rubber material for the flexible plugging of the solid rocket motor nozzle is prepared. The main raw material smoke sheet rubber quality contained in this material is 5kg, and the proportioning weight of other raw materials is except the following one, Others are the same as in Example 1:

[0044] Accelerator DM 0.2%×5kg=10g.

Embodiment 3

[0046] According to the preparation steps of Example 1, a kind of high-strength anti-aging rubber material for the flexible plugging of the solid rocket motor nozzle is prepared. The main raw material smoke sheet rubber quality contained in this material is 5kg, and the proportioning weight of other raw materials is except the following one, Others are the same as in Example 1:

[0047] Antiaging agent 863 0.8%×5kg=40g.

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Abstract

The invention discloses a high-strength anti-aging rubber material for a flexible plug cap for a solid rocket engine nozzle, and a preparation method thereof. The rubber material comprises, by weight,100 parts of ribbed smoked sheets, 2-2.5 parts of an adhesive, 4-5 parts of zinc oxide, 2-3 parts of stearic acid, 45-47 parts of carbon black, 12-14 parts of lauric acid, 2-3 parts of coumarone resin, 2-2.5 parts of Vaseline, 1.8-2 parts of sulfur, 1.6-2.1 parts of an accelerator and 3.4-4 parts of an anti-aging agent. The rubber material has the advantages of no blooming, good adhesive propertywith polyamide fabric, high strength and high aging resistance, the tensile strength is up to 25 MPa or above, and the 70 DEG C * 72h aging resistance change rate is 1.04%, the bonding strength of the rubber material and the fabric is 3.84 kN/m or above, the rubber material has a low hardness, and after the rubber material is stored for two years, the surface of the rubber material has no blooming, and the rubber material has a high apparent quality. The preparation method is simple to operate, and is suitable for large-scale production.

Description

technical field [0001] The invention relates to a rubber material, in particular to a high-strength anti-aging rubber material for a solid rocket motor nozzle flexible plug and a preparation method thereof. Background technique [0002] At present, rubber products have been widely used in machinery, electronics, aerospace and other fields, and play an extremely important role in the sealing of instruments, equipment and power devices. The flexible plug is a sealing part of the engine nozzle, which is a reinforced molded product sandwiched by smoke sheet glue and nylon cloth. After being bonded to the engine nozzle, it can effectively seal the engine contents, and the flexible plug can be used under a specific pressure during launch Being blasted, it is ensured that the nozzle obtains energy to push the projectile to fly. The main rubber of the existing flexible plugging cover is first-grade smoked sheet rubber (NR) produced in Malaysia, which is mixed by adding sulfur, acce...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L45/02C08K13/02C08K3/22C08K5/09C08K3/04C08K5/18
CPCC08K2003/2296C08K2201/014C08L7/00C08L2201/08C08L2205/03C08L45/02C08K13/02C08K3/22C08K5/09C08K3/04C08K5/18
Inventor 万德芬余天雄蒋帮宏晏述亮饶世荣
Owner 湖北三江航天江北机械工程有限公司
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