کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
820203 | 1469521 | 2014 | 5 صفحه PDF | دانلود رایگان |
Polymer matrix composites filled with giant negative thermal expansion (NTE) materials were formed by injection moulding. Antiperovskite manganese nitrides, thermal expansion compensating filler of the composites, exhibit NTE greater than −30 ppm K−1 in α (coefficient of linear thermal expansion). This gigantic NTE, several to ten times as large as that of conventional NTE materials, can compensate large thermal expansion of polyamide-imide polymer and thermal expansion of the composites is adjustable in a wide range of α value from positive to even negative. Quantitative analyses reveal that thermal expansion of the composites is less than the estimate based on the volume-weighted sum, which is ascribed to much larger elastic modulus of the nitride filler.
Journal: Composites Science and Technology - Volume 104, 19 November 2014, Pages 47–51