不同生产工艺对天然橡胶臭氧老化性能与结构的影响  

Properties and Structure of Nature Rubber on Ozone Aging Under Different Production Processes

作　　者：王兵兵[1] 黄桂春 陈永平[1] 黄向前 黄海清 陈琅[1] 周娟[3] 廖建和[3] 

机构地区：[1]海南大学材料与化工学院,海南海口570100 [2]海南天然橡胶集团,海南海口570100 [3]海南大学应用科技学院,海南儋州571700

出　　处：《热带作物学报》2015年第7期1342-1347,共6页Chinese Journal of Tropical Crops

摘　　要：胶乳的凝固和干燥是天然生胶生产的重要环节。在不同凝固方式(酸凝固、微波凝固、自然凝固、微生物凝固)、不同干燥方式(自然风干、热风干燥)等不同工艺下研究了天然橡胶(NR)的理化性能及其臭氧老化前后物理机械性能,发现微生物凝固胶在相同臭氧老化条件下其拉伸强度最高,且变化率最低。采用臭氧老化研究的结果表明:微生物凝固胶(m-NR)硫化胶在静态拉伸状态下臭氧龟裂达到16 h。热重分析探讨了不同工艺NR硫化胶热老化过程,并采用衰减全反射傅立叶红外光谱(FTIR-ATR)技术初步探讨了臭氧对微生物凝固胶的老化作用。Latex coagulation and drying are important parts of natural rubber production. This paper studied the physical and chemical properties of natural rubber, physical and mechanical properties before and after ozone aging under different solidification mode （acid coagulation, mierowave coagulation, natural coagulation, microbiology coagulation） and different drying methods （drying, air drying）. It was found that the tensile strength treated with microbes solidified gum was the highest and the change rate was the lowest at the same ozone aging conditions. The use of ozone aging instrument results showed that microbial solidified glue （m-NR） vulcanizated produced ozone cracking time in the static tensile state reached 16 h. Thermal gravimetric analysis explored the thermal aging process of different processes NR vulcanization, and the use of FTIR-ATR technique explored the aging effects of ozone on microbial solidified gum.

关 键 词：不同工艺 臭氧老化 臭氧龟裂 热老化 

分 类 号：TQ332.1[化学工程—橡胶工业]