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首页> 外文期刊>Journal of Applied Polymer Science >PET interleaving veils for improved fracture toughness of glass fibre/low-styrene-emission unsaturated polyester resin composites
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PET interleaving veils for improved fracture toughness of glass fibre/low-styrene-emission unsaturated polyester resin composites

机译：PET交织面纱可改善玻璃纤维/低苯乙烯排放的不饱和聚酯树脂复合材料的断裂韧性

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摘要

The use of interleaved polyethylene terephthalate (PET) veils to increase the interlaminar fracture toughness of glass fiber-reinforced, low-styrene emission, unsaturated polyester resin composites, was investigated. PET, being chemically similar to the unsaturated polyester resin, was expected to exhibit good wetting and strong interaction with the matrix. Composite laminates were manufactured by hand lay-up, with the veil content varying up to 7%. The effects of PET veils on the interlaminar shear strength, flexural strength, flexural modulus, glass transition temperature, damping parameters, and Mode-I interlaminar fracture toughness of the composite were studied. The veils were found to enhance most of these properties, with only minor negative effects on flexural stiffness and T-g. The PET/resin bonding did indeed prove to be strong, but the enhancement of fracture toughness was not as much as expected, because of the weaker glass/resin interface providing an alternative crack propagation path. (C) 2015 Wiley Periodicals, Inc.
机译：研究了使用交错的聚对苯二甲酸乙二醇酯（PET）面纱来增加玻璃纤维增​​强的，低苯乙烯排放的不饱和聚酯树脂复合材料的层间断裂韧性。在化学上与不饱和聚酯树脂相似的PET有望表现出良好的润湿性和与基质的强相互作用。复合层压板是通过手工铺层制造的，其面纱含量变化高达7％。研究了PET面纱对复合材料层间剪切强度，弯曲强度，弯曲模量，玻璃化转变温度，阻尼参数和I型层间断裂韧性的影响。发现面纱可增强大多数这些特性，而对弯曲刚度和T-g仅有很小的负面影响。 PET /树脂的粘合确实被证明是牢固的，但是断裂韧性的提高并没有预期的那样，因为较弱的玻璃/树脂界面提供了替代的裂纹扩展路径。 （C）2015年Wiley Periodicals，Inc.

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