丙酮溶物对天然橡胶臭氧老化性能影响  

Effect of Acetone Extract on Ozone Aging Properties of Natural Rubber

作　　者：黄贞[1] 廖建和[1] 张鸿飞[1] 黄桂春 张炼辉[3] 陈永平[1] 杜日鹏 HUANG Zhen;LIAO Jianhe;ZHANG Hongfei;HUANG Guichun;ZHANG Lianhui;CHEN Yongping;DU Ripeng(College of Materials and Chemical Engineering,Hainan University,Haikou,Hainan 570228,China;Jinlong Processing Branch,Hainan Natural Rubber Group,Baisha,Hainan 572818,China;Natural Rubber Processing Factory,Chinese Academy of Tropical Agricultural Sciences,Danzhou,Hainan 571700,China)

机构地区：[1]海南大学材料与化工学院,海南海口570228 [2]海南天然橡胶集团金隆加工分公司,海南白沙572818 [3]中国热带农业科学院试验场制胶厂,海南儋州571700

出　　处：《热带作物学报》2018年第10期2039-2046,共8页Chinese Journal of Tropical Crops

基　　金：海南省重大科技计划项目[No.ZDKJ2016020-3(2017)]

摘　　要：天然橡胶中的非胶物质种类和含量影响橡胶的质量和应用性能。本文通过硫化性能、交联密度、耐臭氧老化性能测试和热重分析研究丙酮溶物含量对天然橡胶臭氧老化性能的影响。结果表明,丙酮溶物可以改善天然橡胶的硫化性能,提高其交联密度。随着丙酮溶物添加量的增加,天然橡胶的热稳定性、臭氧裂纹显现时间、拉伸强度保持率逐渐提高并达到最大值。采用衰减全反射傅里叶红外光谱分析仪(ATR-FTIR)分析了天然橡胶臭氧老化前后分子结构变化,可知橡胶在臭氧老化后出现了氧化官能团。The types and content of non-rubber substance in natural rubber affect the quality and application properties. The aims of this study are to investigate the effect of acetone extract（AE） content on the ozone aging properties of natural rubber by tests of the vulcanization behaviour, crosslink density, ozone-resistance and thermal analysis. Results showed that both the improvement of vulcanization behaviour and the increases of crosslink density were attributed to AE. The thermal stability, the cracking time and the maintain rate of tensile strength of natural rubber gradually increased when the acetone extract increased. Furthermore, the structure of natural rubber molecular chains before and after ozone aging were characteristed by attenuated total reflectance Fourier transform infrared spectroscopy（ATR-FTIR）. There was oxidation functional group after ozone aging natural rubber molecular chains in FTIR.

关 键 词：丙酮溶物 天然橡胶 臭氧老化 结构 性能 

分 类 号：Q949.748.5[生物学—植物学]