摘要
为减少绝热材料混炼过程中因物料飞扬造成的物料的损失同时降低物料对环境的污染,结合EVA、POE低熔点投料袋可以与原材料一起混炼,在一定量的使用范围内对绝热层混炼胶和硫化胶的性能没有显著影响的特点,研究了低熔点投料袋对EPDM绝热层力学、烧蚀、硫化性能的影响。测试结果表明,随着EVA或POE材料用量增加,绝热层扭矩差值和硫化速率指数Vc逐渐下降,工艺正硫化时间t90延长,EVA或POE材料并未参与到过氧化物硫化反应。随着POE用量增加,绝热层的拉伸强度和断裂伸长率明显上升,但EVA用量对绝热层力学性能无明显影响。随着POE或EVA材料用量增加,绝热层烧蚀性能无明显变化。
To reduce the loss of materials due to material flying during the compounding process of insulating materials and the pollution of materials to the environment,combined with the feature that low-melting-point feeding bags of EVA and POE could be compounded together with raw materials and have no significant impact on the performance of insulating layer compounding rubber and vulcanized rubber within a certain usage range,the influence of low-melting-point feeding bags on the mechanical,ablation and vulcanization properties of EPDM insulating layer was studied.The test results show that as the amount of EVA or POE material increases,the torque difference and vulcanization rate index Vc of the insulation layer gradually decreases,and the process vulcanization time t90 is prolonged.EVA or POE materials do not participate in the peroxide vulcanization reaction.With the increase in the amount of POE,the tensile strength and elongation rate at break of the insulation layer significantly increases,but the amount of EVA had no significant effect on the mechanical properties of the insulation layer.With the increase in the amount of POE or EVA materials,the ablation performance of the insulation layer do not change significantly.
作者
陈馨
王明超
吴磊
陈雯
周俊
CHEN Xin;WANG Mingchao;WU Lei;CHEN Wen;ZHOU Jun(Hubei Institute of Aerospace Chemical Technology,Xiangyang 441003)
出处
《宇航材料工艺》
北大核心
2025年第4期63-68,共6页
Aerospace Materials & Technology
