| 微波辐射凝固天然橡胶硫化胶热氧降解动力学的研究 |
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| 引用本文： | 黄桂春,李一民,廖建和,赵艳芳,廖禄生,陈桂雄,陈永平.微波辐射凝固天然橡胶硫化胶热氧降解动力学的研究[J].热带农业科学,2011,31(4):55-59. |
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| 作者姓名： | 黄桂春 李一民 廖建和 赵艳芳 廖禄生 陈桂雄 陈永平 |
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| 作者单位： | 1. 海南大学材料与化工学院,海南儋州571737;海南天然橡胶产业股份有限公司,海南海口57000
2. 海南大学材料与化工学院,海南儋州,571737 |
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| 基金项目： | 海南省自然科学基金资助项目“微波法天然橡胶生产工艺研究”(No.509007); 海南大学重点课题“微波凝固天然橡胶结构与性能研究”(No.2009036) |
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| 摘 要： | 采用红外光谱（FTIR）分析了微波辐射凝固天然橡胶（NR-m）的结构。采用热分析（TA）法研究了NR-m、酸凝固天然橡胶（NR-a）和自然微生物凝固天然橡胶（NR-n）3种硫化胶在空气气氛中的热氧降解行为;TG和DTG分析结果显示：3种硫化胶的热氧降解均为两步反应,由T0.05判断NR-m硫化胶的热氧稳定性介于NR-a硫化胶和NR-n硫化胶之间;通过Achar法和Coats-Redfem法求得,3种硫化胶热氧降解的微分式机理函数为f（α）=1/2.α-1、积分式机理函数为g（α）=α2,属于一维扩散机理,NR-m硫化胶的热氧降解平均活化能为145.9～152.3 kJ/mol。
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| 关 键 词： | 天然橡胶 微波辐射 凝固 热氧降解 |
Thermo-oxidative Degradation of Vulcanized Natural Rubber Coagulated by Microwave Radiation |
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| HUANG Guichun,LI Yimin,LIAO Jianhe,ZHAO Yanfang,LIAO Lusheng,CHEN Guixiong,CHEN Yongping.Thermo-oxidative Degradation of Vulcanized Natural Rubber Coagulated by Microwave Radiation[J].Chinese Journal of Tropical Agriculture,2011,31(4):55-59. |
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| Authors: | HUANG Guichun LI Yimin LIAO Jianhe ZHAO Yanfang LIAO Lusheng CHEN Guixiong CHEN Yongping |
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| Institution: | HUANG Guichun1,2) LI Yimin1) LIAO Jianhe1) ZHAO Yanfang1) LIAO Lusheng1) CHEN Guixiong1,2) CHEN Yongping1)(1 College of Materials and Chemical Engineering,Hainan University,Danzhou,Hainan 571737,2 Hainan Natural Rubber Industry Co.,Ltd.,Haikou,Hainan 57000) |
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| Abstract: | The structure of natural rubber coagulated by microwave radiation(NR-m) was analyzed by infrared spectroscopy(FTIR).Thermo-oxidative degradation behavior of the vulcanizates of NR-m,NR-n(natural rubber coagulated by natural microorganisms) and NR-a(natural rubber coagulated by acid) was investigated by(TA) in air-ambient.TG and DTG analysis shows that thermo-oxidative degradation of the three vulcanizates is of two-step reaction,and that judging by T0.05 the thermo-oxidative stability of NR-m vulcanizate is... |
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| Keywords: | natural rubber microwave radiation coagulation thermo-oxidative degradation |
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