2020/10/12 16:46
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高温型差示扫描量热仪 DSC 404 F1 Pegasus®
型号: DSC 404 F1 Pegasus®
产地: 德国
品牌: 耐驰
¥50万 - 100万
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差示扫描量热仪 DSC 214 Polyma
型号: DSC 214 Polyma
产地: 德国
品牌: 耐驰
¥50万 - 100万
参考报价
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方案详情:
聚醚酰亚胺的玻璃化转变 朱明峰,曾智强 聚醚酰亚胺是一种芳香族无定型的热塑性材料,其结构中既有醚链段又含有酰亚胺基团。它具有很好的耐火性和热稳定性,也有很好的耐化学腐蚀性,还是一种很好的绝缘材料,具有极低的产烟量。它通常被用作耐热产品,如用于微波炉内胆和电路板。 测试条件: 温度范围:-25°C…400°C 样品重量:9.37mg 升温速率:10K/min 坩埚类型:Al,加盖扎孔 测试气氛:N2,20ml/min 测试结论: 图中显示,样品在225.2°C(中点)有一个吸热台阶,此为样品的玻璃化转变过程,整个过程中的比热变化为0.21J/g·K。另外,样品在整个测试温度范围内,随着温度的升高,样品比热升高导致热流值逐渐增大。
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