低温等离子表面处理技术在固体火箭发动机成型中的应用

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Application of low-temperature plasma surface treatment technology in the forming of solid rocket motors

CHENG Chenqian1，2*，WANG Kai1，GUO Liang1²，ZHANG Dong1，WANG Lin' （1. Xi'an Institute of Aerospace Composite Materials，Xi'an 71OO25；2. Shaanxi Key Laboratory of Aerospace Composite Materials，Xi'an 710025）

Abstract：Low-temperatureplasma surface treatmenttechnology isanewtypeofsurface treatment technology thatcan be usedforsurface treatmentof various rubber materials，polymer compounds，nd solid rocket motorpropellant grains before bonding.The previous research ontheapplicationoflow-temperatureplasma surface treatmenttechnology wassummarized yinthe molding ofsolidrocket motorsandstudies thechanges inthebonding performanceof phenolic-modifiednitrilerubberafter plasma treatment.Thechanges were characterized inthesurface propertiesof nitrilerubber bythe changes in its surface wettabilityandtheelastic modulusandbonding performanceof nitrilerubber treated with different plasma parametersandplacedfordiferenttimes were tested，andwascompareswiththebondingstrengthofrubber treatedwithconcentratedsulfuricacidonthesurface tostudytheeffectofplasmasurfacetreatmentonthebonding performanceofnitrilerubber.Theresultsshowthatthesurface wettabilityofrubbertreatedwithplasmaissignificantlyimproved，andcansignificantlyimprove the surface properties of nitrile rubber，which is beneficial to bonding.

Keywords：low-temperature plasma; surface treatment; nitrile rubber; bonding

1引言

固体火箭发动机纤维缠绕壳体常在裙部粘贴橡胶材料作为弹性剪切层，用以消除推力负荷、协调轴向变形，从而提高裙部的粘贴可靠性。（剩余6441字）