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首页> 外文期刊>Journal of Materials Science >Temperature and weldline effects on tensile properties of injection moulded short glass fibre PC/ABS polymer composite
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Temperature and weldline effects on tensile properties of injection moulded short glass fibre PC/ABS polymer composite

机译：温度和熔接线对注塑短玻璃纤维PC / ABS聚合物复合材料拉伸性能的影响

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摘要

The effect of weldline and temperature on tensile properties of injection moulded PC/ABS blend reinforced with different concentration levels of short glass fibres was investigated between 23 and 100 °C. The weldline was formed in the moulded specimens by direct impingement of two opposing melt fronts. It was found that weldline had no significant effect on tensile modulus with weldline integrity factor in the range of 1–0.98. Tensile modulus for both weld and unweld specimens increased linearly with increasing volume fraction of fibres, ?f, and decreased linearly with increasing temperature. Tensile strength of both weld and unweld tensile specimens increased non-linearly with increasing ?f reaching a maximum at ?f≈ 0.16 for specimens without weldline and ?f≈ 0.12 for specimens with weldline. A linear dependence with respect to ?f was found for both weld and unweld tensile strengths for fibre volume fractions in the range 0–0.1. It was found that below the glass transition temperature of the matrix, tensile strength of the composite with and without weldlines decreased linearly with increasing temperature. The weldline integrity factor for tensile strength decreased with increasing ?f, but showed no significant variation with respect to temperature.
机译：研究了熔接温度和温度对不同浓度的短玻璃纤维增​​强的注塑PC / ABS共混物拉伸性能的影响，温度范围为23至100°C。熔合线是通过直接撞击两个相对的熔体前沿而在模制样品中形成的。结果发现，焊缝对拉伸模量没有显着影响，焊缝完整性系数在1-0.98的范围内。焊接和未焊接试样的拉伸模量随纤维体积分数Δf的增加而线性增加，随温度的增加而线性下降。焊缝和未焊缝拉伸试样的拉伸强度都随着Δf的增加而非线性增加，无焊缝的试样在？f ≈0.16时达到最大值，而有焊缝的试样的？f ≈0.12。 。对于纤维体积分数在0-0.1范围内的焊接和未焊接抗拉强度，发现相对于？f 的线性相关性。发现在基质的玻璃化转变温度以下，具有和不具有焊缝的复合材料的拉伸强度随温度升高线性降低。焊缝抗拉强度的完整性因数随？f的增加而降低，但相对于温度无明显变化。

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  • 来源
    《Journal of Materials Science》 |2007年第8期|2652-2661|共10页
  • 作者

    S. Hashemi; Y. Lepessova;

  • 作者单位

    London Metropolitan Polymer Centre London Metropolitan University Holloway Road London N7 8DB UK;

    London Metropolitan Polymer Centre London Metropolitan University Holloway Road London N7 8DB UK;

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