摘要
采用模压发泡工艺制备了基于丁基橡胶为基体的发泡材料,探讨了发泡剂对丁基橡胶发泡材料的密度、吸水性、力学性能、结晶性、微观形貌的影响。试验结果表明,发泡剂偶氮二甲酰胺(AC)质量分数为8%时,发泡材料密度最小,吸水性最好,冲击强度最大;拉伸强度随AC发泡剂的增加而减小;永久压缩变形随AC的增加而增大,在8%时达到最大值,之后随AC的增加而减小。加入AC发泡剂破坏了结晶,使发泡材料韧性增加,脆性减弱。发泡剂AC质量分数为8%时,丁基发泡材料发泡程度及孔洞形态较为理想。
The influences of foaming agent on density, water absorption, mechanical properties, crystallinity and morphology were investigated, using the foam material based on butyl rubber prepared by the molded foam process. The results showed that the foaming material had the least density, best water absorption and maximum impact strength when the foaming agent AC dosage was 8%. Tensile strength decreased with the increasing of the AC amount, while the permanent compression deformation increased with the increasing of the AC amount, and reached to the maximum at AC amount of 8%, then decreased. The crystal of the foamed material was destroyed by the AC foaming agent, so that the toughness increased and the brittle was weakened. When the mass fraction of foaming agent AC was 8%, the foaming degree and pore morphology of butyl foam were ideal
出处
《大连工业大学学报》
CAS
北大核心
2017年第1期50-53,共4页
Journal of Dalian Polytechnic University
基金
国家自然科学基金项目(51373027)
辽宁省教育厅一般项目(LR2012017)
关键词
发泡橡胶
丁基橡胶
高性能间隔条
泡孔结构
foam rubber
isobutylene isoprene rubber （IIR）
high performance spacer
cell structure
