Dynamic mechanical properties of high density polyethylene and nitrile rubber blends: Effect of blend ratio, compatibilization and filler incorporation

被引:9
|
作者
George, J
Neelakantan, NR
Varughese, KT
Thomas, S
机构
[1] Mahatma Gandhi Univ, Sch Chem Sci, Kottayam 686560, Kerala, India
[2] Univ Coll Engn, Dept Polymer Engn, Idukki 685587, Kerala, India
[3] Indian Inst Technol, High Polymer Engn Div, Dept Chem Engn, Madras 600036, Tamil Nadu, India
[4] Cent Power Res Inst, Polymer Lab, Bangalore 560080, Karnataka, India
来源
RUBBER CHEMISTRY AND TECHNOLOGY | 2005年 / 78卷 / 02期
关键词
D O I
10.5254/1.3547884
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Blends of high density polyethylene (HDPE) and acrylonitrile butadiene rubber (NBR) were prepared by a melt blending technique. Dynamic mechanical analysis revealed that elastic modulus has a strong dependence on blend ratio. Loss factor peaks increase with increase in rubber content. Pure components exhibit single T-g whereas two T-g(s) can be observed in the blends indicating incompatibilily between the constituents. Loss modulus data also give similar information. The addition of compatibilizer has only a marginal effect on tan 8 peak corresponding to the transitions in NBR. The elastic modulus values of the compatibilized blends are slightly higher than that of incompatible blends. In dynamically Vulcanized blends the T-g due to alpha-relaxation of NBR is increased in blends containing a high concentration of rubber phase. In filled blends the elastic modulus showed significant increase over unfilled system. Also, the damping factor is enhanced by filler incorporation indicating that such materials Could find application in vibration dampers. The suit-ability of various theoretical models in predicting the blend moduli is examined. The Takayanagi model fits well with the experimental data in unfilled blends.
引用
收藏
页码:286 / 311
页数:26
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