摘要
聚氨酯(PU)适配器本体泡沫作为导弹系统中的重要组成部分,长期受弹体的挤压。研究PU适配器本体泡沫满足全备弹周期储存条件不小于10年具有一定意义。文章主要研究了PU适配器本体泡沫的常温长期压缩蠕变性能。根据高分子材料的蠕变行为及使用工况,选用“时间强化模型”和自行设计的实验工装,分别对不同密度、加载应力的A型、B型和C型PU适配器本体泡沫进行了常温长期压缩蠕变实验。通过软件拟合出相应参数,分析并预测了3种PU适配器本体泡沫的压缩蠕变寿命。通过“时间强化模型”计算的理论蠕变量与实际蠕变量偏差率小于5%。说明蠕变模型有效,A型、B型和C型PU适配器本体泡沫满足使用寿命10年的要求,为高分子材料常温蠕变性能的研究和寿命预测提供思路。
As an important part of the missile system, the polyurethane(PU) adapter body foam is squeezed by the projectile for a long time. It is of certain significance to study the PU adapter body foam to meet the full reserve cycle storage conditions of not less than 10 years. The long-term compression creep properties of PU adapter foam at room temperature were studied. According to the creep behavior and working conditions of polymer materials, the ’time strengthening model’ and self-designed experimental tooling were used to carry out long-term compression creep experiments at room temperature for A-type, B-type and C-type PU adapter foams with different densities and loading stresses. The corresponding parameters were fitted by software, and the compression creep life of three PU adapter body foams was analyzed and predicted. The deviation rate between the theoretical creep calculated by the ’time hardening model’ and the actual creep is less than 5%. It shows that the creep model is effective, and the A-type, B-type and C-type PU adapter body foams meet the requirements of 10 years of service life, which provides ideas for the study of room temperature creep properties and life prediction of polymer materials.
作者
安昕
王静
孟柳
孟豪宇
张涛
孙超明
AN Xin;WANG Jing;MENG Liu;MENG Hao-yu;ZHANG Tao;SUN Chao-ming(Beijing Composite Materials Co.,Ltd.,Beijing 102101,China)
出处
《塑料科技》
CAS
北大核心
2023年第2期31-35,共5页
Plastics Science and Technology
