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Study on Effects of Short Glass Fiber Reinforcement on the Mechanical and Thermal Properties of PC/ABS Composites

机译:短玻璃纤维增​​强对PC / ABS复合材料力学和热性能的影响研究

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This article mainly investigated the length distributions of the alkali-free short glass fibers in specimens and their effect on the mechanical and thermal properties of the composites. The results show that the initial length, addition level and feed way of the fibers have obvious effects on the length distributions of fibers in specimens, and thereby the mechanical and thermal properties of the composites. The main-direction feed way has an intense shear action on the fibers in specimens. With the increase of the fiber content, the reinforcing effect of fibers on the tensile strength, flexural strength and flexural modulus of the composites is increased, while the impact strength is decreased first and then tends to be stable, and the strength factor (F) of the tensile strength to weld line is significantly reduced. The longer the fiber lengths in specimens are, the more obvious the reinforcing and toughening effects are. To some extent, with the increase of the fiber content, the storage modulus (E') and loss modulus (E'') of the specimens are increased, but the loss factor (Tan δ) is reduced. The effect of the fiber initial lengths on the heat-degradation of composites is smaller than that of the fiber content. Meanwhile, adding fibers can improve the thermal stability of the composites, and this law is also confirmed by the heat deflection temperature (HDT) test.
机译:本文主要研究了无碱短玻璃纤维在样品中的长度分布及其对复合材料力学性能和热性能的影响。结果表明,纤维的初始长度,添加量和进料方式对试样中纤维的长度分布有明显的影响,进而影响复合材料的力学性能和热性能。主方向进给方式会对样品中的纤维产生强烈的剪切作用。随着纤维含量的增加,纤维对复合材料的拉伸强度,弯曲强度和弯曲模量的增强作用增强,而冲击强度先降低后趋于稳定,强度因子(F)对焊接线的抗拉强度的显着降低。样品中的纤维长度越长,增强和增韧效果越明显。随着纤维含量的增加,样品的储能模量(E')和损耗模量(E'')有所增加,但损耗因子(Tanδ)却降低了。纤维初始长度对复合材料热降解的影响小于纤维含量的影响。同时,添加纤维可以提高复合材料的热稳定性,这一规律也通过热变形温度(HDT)测试得到了证实。

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