生物凝固天然橡胶的性能及其在子午线轮胎中的应用  

Properties of NR Prepared by Biological Coagulation and Its Application in Radial Tires

作　　者：张桂梅[1] 邹建云[1] 姜士宽[1] 刘谦 董凌波 

机构地区：[1]云南省热带作物科学研究所,云南景洪666100 [2]三角轮胎股份有限公司,山东威海264200

出　　处：《橡胶工业》2013年第10期609-613,共5页China Rubber Industry

基　　金：云南省科技创新强省计划项目(2009AB001);国家科技支撑计划项目(2011BAD30B01)

摘　　要：研究生物凝固天然橡胶（NR-B）的性能及其在子午线轮胎中的应用,并与马来西亚20#天然橡胶（SMR20）进行对比.基本性能试验结果表明,与SMR20相比,NR-B的塑性初值和塑性保持率较高,混炼胶的焦烧性能较好,硫化速率较快,硫化胶的定伸应力较小,拉伸强度较大.小配合试验结果表明,与SMR20相比,NR-B配方胶料的拉伸强度、拉断伸长率、撕裂强度和抽出力较大,耐磨性能和耐热空气老化性能较好,但门尼粘度较大,加工性能略差.NR-B可以替代SMR20应用于子午线轮胎生产,但在生产过程中需对其工艺进行适当调整.The properties of NR prepared by biological coagulation NR （NR-B） and its application in radial tires were investigated,and compared with standard Malaysia rubber grade 20（SMR20）. The basic performance test results showed that, compared with SMR20, the NR-B possessed higher initial plasticity and plasticity retention,the scorch safety of mix was better and the curing rate was faster, the modulus of vulcanizate was smaller and the tensile strength was higher. The small combined exper- iment on radial tires showed that,compared with SMR20, the NR-B possessed better physical proper- ties,wear resistance and hot air aging resistance. However,the Mooney viscosity of NR-B was higher, so the processing property was slightly worse. The NR-B could be used in radial tires instead of SMR20 with appropriate adjustments in processing.

关 键 词：天然橡胶 生物凝固 子午线轮胎 

分 类 号：TQ336.1[化学工程—橡胶工业]