微波辐射凝固天然橡胶的性能研究  

Properties of natural rubber coagulated by microwave radiation

作　　者：李一民[1] 廖建和[1] 赵艳芳[1] 廖禄生[1] 黄桂春[2] 陈桂雄[2] 

机构地区：[1]海南大学材料与化工学院,海南儋州571737 [2]海南天然橡胶产业股份有限公司,海南海口570100

出　　处：《弹性体》2011年第6期29-33,共5页China Elastomerics

基　　金：海南省自然科学基金资助项目(509007);海南大学重点课题(2009036)

摘　　要：采用新型微波辐射凝固法凝固天然橡胶,并与传统天然橡胶凝固方法作比较,对其性能进行了全面研究。通过正交实验探索了实验室微波辐射凝固的适宜工艺条件。对比了微波辐射凝固胶(NR-m)、酸凝固胶(NR-a)和自然凝固胶(NR-n)的性能,结果表明,在理化性能方面,NR-m的氮含量比NR-a和NR-n高,塑性初值比NR-a高;在物理机械性能方面,NR-m硫化胶老化前的定伸应力和拉伸强度比NR-a高,老化后的拉伸强度保持率比NR-a低,但比NR-n高;在硫化特性方面,NR-m的硫化诱导时间比NR-a和NR-n的短,最大转矩和硫化速度更高。A new coagulation method, that is microwave radiation coagulation（MRC）, and tradi- tional coagulation methods were used to coagulate natural rubber and then compared properties of the rubbers. Suitable laboratory microwaw.＇ coagulation conditions were explored by orthogonal test. Mi- crowave radiation coagulation natural rubber （NR - m）, acid coagulation natural rubber （NR - a） and natural coagulation natural rubber（NR- n）were prepared and their properties were studied, the results showed that, as to the physical and chemical properties, nitrogen content of NR- m are much higher than NR - a and NR - n,initial plasticity of NR - m is higher than NR - a. As to physical and mechani- cal properties,stretching stress and tensile strength of NR- m are higher than NR- a before aging, while tensile strength retention after aging of NR-m is lower than NR- a, but relatively higher than NR - n. As to the curing behaviors, vulcanization induction time of NR- m is shorter than either NR - a and NR- n,while maximum torque and curing rate are much higher.

关 键 词：天然橡胶 性能 微波辐射 凝固 

分 类 号：TQ332[化学工程—橡胶工业]