摘要
采用在不饱和聚酯树脂中填加阻燃剂、耐烧蚀纤维等功能填料的方式来解决不饱和聚酯包覆层烧蚀较高的问题。通过功能填料选择试验,探索出基体材料中加入阻燃剂和耐烧蚀纤维的技术,研究了阻燃剂和耐烧蚀纤维加入量及耐烧蚀纤维长度对烧蚀率的影响。结果表明,增加碳纤维加入量或碳纤维长度,包覆层的线烧蚀率明显降低;氢氧化铝对不饱和聚酯树脂的烧蚀率有一定的贡献。复合改性后包覆层的线烧蚀率为0.252 mm/s(改性前为0.653 mm/s),黏度较小,不影响包覆工艺。Φ50 mm发动机试验表明,选用复合改性不饱和聚酯树脂包覆层包覆改性双基推进剂,包覆层壳体完整(残留率大于90%)。
Unsaturated polyester （UP） inhibitor has many advantages and has been widely used in many rocket motors and gas generators, but it also has the disadvantage of high ablation rate. So the investigation, to improve the ablation performance of UP inhibitor via the method of adding flame retartants and anti-ablation fibers to resin matrix, has been performed. The samples of UP inhibitor modified with carbon fibers and aluminium hydrate has been prepared, its ablation rates and mechanical properties have been determined experimentally according to relevant standard methods. The test results indicate that the effect of carbon fibers on ablation performance of the inhibitor samples is obvious, and the aluminium hydrate filler has minor effect. With the content and fiber length of carbon fibers increasing, the linear ablation rate of UP inhibitor samples has significantly reduced. The linear ablation rate of UP inhibitor has reduced from 0. 653 mm/s（baseline sample） to 0. 252 mm/s, and simultaneously the fillers has no effect on the viscosity of inhibitor slurry. The ablation performance of modified UP inhibitor has also been validated via Ф50 mm motor test, and the result is desired.
出处
《火炸药学报》
EI
CAS
CSCD
2006年第3期17-19,22,共4页
Chinese Journal of Explosives & Propellants
关键词
有机化学
不饱和聚酯
包覆层
烧蚀率
耐烧蚀
organic chemistry
unsaturated polyesters inhibitor
ablation rate
anti-ablatlon
