硫化体系对发泡制品的质量及力学性能的影响  

Effects of Curing System on the Quality and Mechanical Properties of Foam Products

作　　者：麻玉龙 张纯[3] 张敬[3] 龚维[1,2,3] 何力[3] 

机构地区：[1]贵州师范大学材料与建筑工程学院,贵阳550014 [2]贵州省无机非金属功能材料重点实验室,贵阳550014 [3]国家复合改性聚合物材料工程技术研究中心,贵阳550014

出　　处：《材料导报》2014年第20期56-61,共6页Materials Reports

基　　金：国家自然基金(21264004);无机非金属功能材料重点实验室建设(黔教合KY字[2012]004号);贵州省重大专项项目(黔科合重大专项字(2012)6023号);贵州省人才团队项目(黔科合人才团队[2014]4006号)

摘　　要：采取模压成型制备发泡天然橡胶复合材料,通过复合材料硫化与发泡匹配机理,研究了硫化剂含量对发泡天然橡胶质量及力学性能的影响。结果表明:随着硫化剂含量的增加,发泡材料的泡孔直径、泡孔尺寸分布逐渐降低,泡孔密度先增加后降低;当硫化剂含量为2.5份时,其泡孔质量最理想,泡孔直径、泡孔密度分别为175.12μm、2.25×106 cm-3。发泡天然橡胶材料的力学性能方面,其综合性能较好,邵氏硬度20,压缩永久变形95%,冲击回弹性59%。从发泡质量和力学性能的角度来看,当硫化剂含量为2.5份时,发泡材料的力学性能较好。Foamed natural rubber composites were prepared by molding technology. According to the match between curing and blowing of the composites, the influence on foaming quality and properties of foamed natural rubber/ vulcanizing agent composites was studied. The result showed that with the increase of the vulcanizing agent content, cell diameter and cell size distribution of the foamed material gradually decrease, cell density increases first and then decreases. There is perfect foaming effect in foamed natural rubber/vulcanizing agent composites for adding 2.5wt% vulcanizing agent,as the cell size is 175.12μm, the cell size distribution is uniform and the cell density is 2. 25 ×10^6cm^-3. Natural rubber foam material has good comprehensive mechanical properties,as the Shore hardness is 20, the permanent compressive deformation is 95%, impact resilience is 59%. When vulcanizing agent content is 2. 5wt%, foamed natural rubber/vulcanizing agent composites has good mechanical properties.

关 键 词：硫化剂 天然橡胶 发泡行为 力学性能 

分 类 号：TQ332[化学工程—橡胶工业]