Studies on the combined effect of injection temperature and fiber content on the properties of polypropylene-glass fiber composites

W.N. OTA; S.C. AMICO; K.G. SATYANARAYANA

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Studies on the combined effect of injection temperature and fiber content on the properties of polypropylene-glass fiber composites

机译：注射温度和纤维含量对聚丙烯-玻璃纤维复合材料性能的综合影响研究

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摘要

This paper focuses on correlations between physical and mechanical properties of polypropylene (PP) and PP/glass fiber composites molded at different injection temperatures and fiber weight fractions (20 percent and 30 percent w/w). Density, melt flow index (MFT)- thermal stability, crystallinity and tensile and impact properties have been evaluated. The MFI of the composites was dependent on fiber content, fiber length distributions, a slight additional thermal protection due to the fibers and PP chain scission. The tensile strength and elastic modulus of the PP-composites increased linearly with fiber content. Injection temperature was shown to decrease elastic modulus to a point that the different composites showed statistically comparable rigidities. These properties have been discussed in the light of microstructural changes studied by SEM.

机译：本文着眼于聚丙烯（PP）和在不同注射温度下成型的PP /玻璃纤维复合材料的物理和机械性能与纤维重量分数（20％和30％w / w）之间的相关性。评估了密度，熔体流动指数（MFT），热稳定性，结晶度以及拉伸和冲击性能。复合材料的MFI取决于纤维含量，纤维长度分布，由于纤维和PP断链而产生的轻微额外热保护。 PP复合材料的拉伸强度和弹性模量随纤维含量线性增加。注射温度显示降低了弹性模量，以至于不同的复合材料显示出统计学上可比的刚性。这些性质已根据SEM研究的微观结构变化进行了讨论。

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来源
《Composites Science and Technology》 |2005年第6期|p.873-881|共9页
作者
W.N. OTA; S.C. AMICO; K.G. SATYANARAYANA;
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作者单位

Programa de Pos-graduacao em Engenharia (PIPE), Universidade Federal do Parana (UFPR), Caixa Postal: 19.011, Curitiba-PR, Brazil;

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原文格式 PDF
正文语种 eng
中图分类工程材料学;
关键词
Short-fibre composites; Mechanical properties; Injection molding;

机译：短纤维复合材料;机械性能;注塑;

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机译：高温负载对Nicalon纤维和Nicalon纤维/ siC基复合材料力学性能的影响

Studies on the combined effect of injection temperature and fiber content on the properties of polypropylene-glass fiber composites

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