复合无机填料耐温增效聚酰亚胺泡沫的制备和性能

Preparation and Properties of Polyimide Foam with Temperature Resistant and Synergistic Composite Inorganic Fillers

针对市场不同行业领域特别是锂电池行业,对泡沫材料提出的更高的高温隔热性能,为了使得聚酰亚胺泡沫能够实现高温下的隔热性能,利用复合无机填料增效聚酰亚胺泡沫的耐温性能,研究了空心玻璃微球与可膨胀蛭石的不同比例、无机填料不同添加量以及不同密度聚酰亚胺泡沫对其高温隔热性能的影响,通过600℃的加热台测试泡沫背面的冷面温度,研究发现,聚酰亚胺泡沫的发泡倍率在5~10倍,添加的空心玻璃微球和可膨胀蛭石的质量是泡沫质量的50%,其中空心玻璃微球占无机物质量的20%,得到的聚酰亚胺泡沫在常温下具有较低的导热系数,并且在高温下的隔热性能优异。

Aiming at the higher thermal insulation performance of foam materials proposed by different industries in the market,especially in the lithium battery industry,in order to enable polyimide foam to achieve thermal insulation performance at high temperatures,composite inorganic fillers are used to enhance the thermal insulation performance of polyimide foam.The different ratios of hollow glass microsphere and expandable vermiculite,inorganic fillers with different additions and polyimide foam with different densities on the high temperature thermal insulation properties of polyimide foam were studied.In this paper,the cold surface temperature of the back of the polyimide foam was tested on a 600℃heating table.It was found that the foaming ratio of the polyimide foam was 5~10 times,the weight of the added hollow glass microspheres and expandable vermiculite was 50%of the weight of the foam,and the hollow glass microspheres accounted for 20%of the weight of the inorganic substances.The polyimide foam obtained had a low thermal conductivity at room temperature,and excellent thermal insulation performance at high temperatures.