MECHANICAL PROPERTIES OF SHORT GLASS FIBER AND SILICONDIOXIDE POWDER REINFORCED PA66/ UHMWPE COMPOSITES
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摘要: 制备了PA66/ U HMWPE/ HDPE-g-MA H 共混合金, 并对其力学性能和微观结构进行了研究。结果表明: 随着U HMWPE 含量的增加, 共混合金缺口冲击强度显著提高, 拉伸强度、拉伸模量、弯曲强度和弯曲模量下降。为了弥补强度和刚性的损失, 使材料同时具有良好的韧性、强度和刚性, 采用了短玻璃纤维和无机粒子混杂增强PA66/ U HMWPE/ HDPE-g-MAH (80/ 20/ 20) 。经短玻纤和无机粒子混杂增强后, 材料的拉伸强度、弯曲强度、模量和刚性都明显提高, 同时材料缺口冲击强度保持较高水平, 比尼龙66 提高72.9 %。
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关键词:
- PA66/ U HMWPE 合金 /
- 复合材料 /
- 玻璃纤维 /
- 无机粒子 /
- 力学性能
Abstract: The microst ructure and mechanical properties were studied for polyamide 66 ( PA66) / ult ra high molecular weight polyethylene ( U HMWPE) blends compatibilized by maleic anhydride high density polyethylene( HDPE-g-MAH) . The result s indicate that the notched izod impact st rength increases obviously with the increase ofcontent of U HMWPE at the expense of tensile/ flexural st rength and modulus. In order to improve the st rength andstiffness of U HMWPE toughening polyamide 66 , short glass fiber (SGF) and inorganic particles were employed toreinforce PA66/ U HMWPE/ HDPE-g-MA H (80/ 20/ 20) . It is found that the tensile/ flexural st rength and tensile/flexural modulus are improved substantially , meanwhile the high notched izod impact strength is maintained , about72.9 % higher than that of PA66.-
Key words:
- PA66/ U HMWPE alloy /
- hybrid composites /
- glass fiber /
- inorganic particles /
- mechanical properties
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