Effect of Mixing Temperature on the Properties of Eucommia Ulmoides Gum /Natural Rubber Blend

被引：0
作者：
Zou H. [1 ]
Kang H. [1 ,2 ]
Yang F. [1 ,2 ]
Fang Q. [1 ,2 ]
机构：
[1] School of Material Science and Engineering, Shenyang University of Chemical Technology, Shenyang
[2] Key Laboratory for Rubber Elastomer of Liaoning Province, Shenyang University of Chemical Technology, Shenyang
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2019年 / 35卷 / 09期
关键词：
Eucommia ulmoides gum; Mechanical properties; Mixing temperature; Natural rubber;
D O I：
10.16865/j.cnki.1000-7555.2019.0262
中图分类号：
学科分类号：
摘要：
The eucommia ulmoides gum(EUG) and natural rubber (NR) were blended according to a certain ratio. The effects of different mixing temperatures on the mechanical properties of the rubber compounds and vulcanizates were investigated by changing the mixing temperature. The carbon black dispersibility in the system was analyzed by rubber processing analyzer (RPA). The internal crystal was characterized by differential scanning calorimetry (DSC). The tensile section of vulcanizate was observed by scanning electron microscopy (SEM). The results show that the crystallinity of the rubber compounds and vulcanizates decreases with the increase of the mixing temperature; the carbon black dispersion is more uniform; the Shore A hardness of rubber compounds also increases; when the mixing temperature is in the range of 25℃ to 50℃, as the mixing temperature decreases, the elongation at break and the tensile strength gradually decrease; the 100% modulus and 300% modulus increase gradually. The results of DSC, SEM and RPA demonstrate that this phenomenon can be attributed to the change of the binding state of EUG and NR. © 2019, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：119 / 125and133
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