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Liner material for improving interfacial bonding of HTPB propellant and preparation method thereof

An interface bonding and propellant technology, which is applied in the field of lining, can solve the problems of unreported application, and achieve the effects of improving adhesion, good mechanical properties and process performance regulation, and saving charging time.

Inactive Publication Date: 2017-02-01
SHANGHAI XINLI POWER EQUIP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In summary, as missile weapon systems have higher and higher requirements for the comprehensive performance of solid rocket motors, the requirements for linings are also getting higher and higher, and interpenetrating polymer network technology can combine the advantages of one or several polymers To meet the requirements of various engines for the lining, there is no report on the application of the interpenetrating polymer network technology cured by two kinds of substrates in the lining

Method used

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  • Liner material for improving interfacial bonding of HTPB propellant and preparation method thereof
  • Liner material for improving interfacial bonding of HTPB propellant and preparation method thereof
  • Liner material for improving interfacial bonding of HTPB propellant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] At room temperature, 100g of ethylene oxide-tetrahydrofuran copolyether, 7g of 1,4-butanediol, 4g of castor oil, 0.02g of DBTDL and 6.0g of DBS were added and stirred thoroughly after each addition. Then add the curing agent with R=1.30 at room temperature and stir evenly. Finally, 10.0 g of epoxy resin was added at room temperature, stirred evenly, and vacuum degassed for 20 minutes to prepare a new type of interpenetrating network lining. The mechanical properties of the body can be measured by making the lining film; the tear-off strength is tested by making the polyether propellant / lining layer / thermal insulation layer bonding test piece, and the results are listed in Table 2.

Embodiment 2～8

[0052] Press the prescription of Table 1, prepare and test with the method same as Example 1, and the results are listed in Table 2.

[0053] Each embodiment performance test result of table 2

[0054]

[0055] From the experimental results in Table 2, it can be seen that the liner formed by the liner of the present invention has excellent bonding performance with the butylated hydroxyl propellant, and can meet the requirements of the engine charge on the interface bonding reliability. At the same time, the liner has a short pre-curing time, which can shorten the charging process time.

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Abstract

The invention discloses a liner material for improving interfacial bonding of an HTPB propellant and a preparation method thereof. The liner material provided by the invention comprises two parts, namely an interpenetrating polymer network I and an interpenetrating polymer network II, wherein the interpenetrating polymer network I comprises a curing agent of isocyanate, a chain extender of dihydric alcohol or diamine, a cross-linking agent of a multiple active functional group compound and a plasticizer, and also comprises adhesives comprising hydroxyl-terminated polybutadiene, nitrine or polyether and other hydroxyl-terminated macromolecule dihydric alcohols. The interpenetrating polymer network II comprises an epoxy resin, polyacrylate, polyurethane, polysiloxane, a vinyl ester resin and other resins. According to the invention, a novel technology can be provided to adapt to a propellant liner, so that the interfacial bonding property between the liner and the propellant is improved.

Description

Technical field [0001] The present invention relates to a liner, and in particular to a liner material that improves the interfacial adhesion of HTPB propellant and a preparation method thereof. More specifically, the present invention relates to a new type of adhesive that uses polyurethane as the network structure I, resins such as epoxy resin, acrylic or styrene as the interpenetrating network structure II, and isocyanate as the curing agent. Interpenetrating network lining. Background technique [0002] As missile weapon systems have increasingly higher requirements for the comprehensive performance of solid rocket motors, such as high-energy propellants and low-signal propellants, which have received widespread attention at home and abroad, higher requirements have been put forward for the comprehensive performance of the lining. [0003] The liner is a layer of viscoelastic material that allows the propellant to be firmly bonded to the insulation layer or the engine c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L75/08C08L63/00C08G18/69C08G18/65C08G18/48C08G18/66
Inventor 左海丽詹国柱楼阳黄洪勇朱勇
Owner SHANGHAI XINLI POWER EQUIP RES INST
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