Dynamic vulcanization of rubberwood-filled polypropylene/natural rubber blends

被引：57

作者：

Ismail, H ^{[1
]}

Salmah ^{[1
]}

Nasir, M ^{[1
]}

机构：

[1] Univ Sains Malaysia, Sch Ind Technol, Div Polymer, Minden 11800, Penang, Malaysia

来源：

POLYMER TESTING | 2001年 / 20卷 / 07期

关键词：

polypropylene/natural rubber blends; rubberwood; dynamic vulcanization;

D O I：

10.1016/S0142-9418(01)00010-1

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effects of dynamic crosslinking on mechanical properties, water absorption and morphology of rubberwood-filled polypropylene (PP)/natural rubber (NR) blends were studied. The blends were prepared at 180 degreesC using a rotor speed of 50 rpm for 12 min. Sulfur concentration was steadily increased from 0 to 2.0 (wt%) in order to study the vulcanization effect. It was found that dynamic crosslinking has enhanced the tensile strength, stress-at-peak, Young's modulus, flexural modulus and stabilization torque (at the end of the mixing stage) of the rubberwood-filled PP/NR blends. This has been attributed to the increase in crosslink density which was indicated by a reduction of weight gain (water absorption) and weight loss of the blends with increasing sulfur concentration. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：819 / 823

页数：5

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