Study of Ablation Properties of Silicone Rubber Composite under Particle Erosion

doi:10.3969/j.issn.1000-1093.2019.04.020

Abstract

Abstract: An oxygen-kerosene gas generator which can adjust the jet and particle concentration is adopted for studying the ablation properties of silicon rubber composite under the particle erosion. Ablation tests under the conditions of ablation angles of 15-45 degrees and particle mass concentrations of 0-3.69% were carried out. The influence of particle erosion on ablation rate was analyzed. The ablation properties of silicone rubber composite is discussed by analyzing the macroscopic and microcosmic structures of the specimens. The results show that the particle concentration has an obvious influence on the ablation rate of the silicone rubber composite. The mass ablation rate increases sharply with the increase in particle concentration. The line ablation rate increases and the mass ablative rate decreases with the increase in erosion angle. The structures with char layer, pyrolytic layer and matrix layer are formed after test. The pyrolytic temperature of silicone rubber composite is about 516-710 ℃, the main products are cyclohexane and a small amount of CO₂ and H₂O. Particle erosion breaks the integrity of surface char layer structure, resulting in the surface migration of samples and promoting the thermal decomposition of inner material. Key

Key words: siliconerubbercomposite, particleconcentration, ablationangle, particleerosion, ablationproperty

CLC Number:

V435⁺.14

WANG Jinjin, ZHA Bailin, ZHANG Yan, ZHANG Wei, SU Qingdong. Study of Ablation Properties of Silicone Rubber Composite under Particle Erosion[J]. Acta Armamentarii, 2019, 40(4): 848-856.

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第40卷
第4期2019 年4月兵工学报ACTA
ARMAMENTARIIVol.40No.4Apr.2019

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