Page 106 - 《橡塑技术与装备》2020年1期（1月上半月橡胶）

橡塑技术与装备（橡胶） CHINA RUBBER/PLASTICS TECHNOLOGY AND EQUIPMENT (RUBBER)

断强度变化趋势、应力 - 应变关系曲线、热氧老化 （2）MPU 与 NBR 硫化特性相差较大，20 份
性能变化以及动态生热。）证明了 MPU 在与 NBR 和 NBR 的 加入 会严 重影 响 80 份 MPU 的 硫化， 使得 整
EPDM 分别共混时会呈现不同的变化规律。 体交联程度出现下降。MPU 与 EPDM 硫化特性相近，
无论何种配比，两相硫化的相互影响较小，整体性能
优异。

参考文献 ：
[1] 赵光贤 . 橡胶共混和橡塑共混 [J]. 世界橡胶工业，2007,34
(4):17-21.
[2] 刘厚均 . 聚氨酯弹性体手册 [M].2 版 . 北京 : 化学工业出版社，
2012:1-281.
[3] 高瑞雪，侯金智 . 混炼型聚氨酯橡胶性能的研究 [J]. 橡胶科
技，2014,(7): 21-23.
[4] Mishra JK, Kim I. New millable polyurethane/organoclay
nanocomposite: preparation, characterization and
properties[J]. Macromolecular rapid communications, 2003,
24(11): 671-675.
图 8 不同 MPU/EPDM 共混比下滞后角随温度的变化

Comparison of MPU/NBR and MPU/EPDM co-vulcanization compatibility

Du Wei, Deng Tao*
(Qingdao University of Science and Technology, Qingdao 266042, Shandong, China)

Abstract: In this paper, experiments on MPU/NBR blended rubber and MPU/EPDM blended rubber with
different combined ratios were carried out, and the vulcanization characteristic curve, the change of tensile
strength, the stress-strain relationship, the change of thermal oxygen aging performance and the change
law of dynamic heat generation performance of the two were compared. It was found that the degree of
vulcanization matching of MPU/EPDM blended rubber was significantly better than that of MPU/NBR blended
rubber. Adding NBR to the MPU will inhibit the vulcanization of the MPU phase and the degree of vulcanization
is too low, which is caused by the mismatch of the vulcanization characteristics of the two. In contrast, the
vulcanization characteristics of MPU and EPDM are similar, and the two-phase effect of MPU/EPDM blended
rubber is less.
Key words: mixed polyurethane rubber (MPU); rubber blending; modulus matching; stress-strain
relationship; dynamic heat generation
（R-03）

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