摘要
采用纳米氧化铝(Al2O3)为填料,制备不同配比的EPDM/Al2O3复合材料,并分别研究了复合材料的机械性能、导热系数和微观形貌。研究结果表明,随着Al2O3用量的增加,复合材料的力学性能表现得更为优异,导热系数也明显增加;纳米Al2O3的用量增加至100份,复合材料的导热系数增加至0.53 W/(m·K),压缩疲劳值增加的较少,大大降低了填料与橡胶基体之间的摩擦,因此表现出较小的热量积累。在同一配比下,填充纳米Al2O3的复合材料与其他填料的机械性能接近,导热系数明显增加,比炭黑N550填充复合材料的热导率高约32.3%,比聚氯乙烯(PVC)填充复合物的热导率高出57.7%。Al2O3填料在橡胶基体中可以均匀地分散,复合材料的交联网络较为完善,对于延长材料的使用寿命具有重要意义。
Using nano-alumina(Al2O3)as a filler,EPDM/Al2O3 composite materials with different ratios were prepared to study the mechanical properties,thermal conductivity and micro-morphology of the composite materials.The results of the study show that with the increase in the amount of Al2O3,the mechanical properties of the composite material are more excellent,and the thermal conductivity is also significantly increased.The amount of nano Al2O3 increased to 100 phr,the thermal conductivity of the composite material increased to 0.53 W/(m·K),the compression fatigue value increased less,greatly reducing the friction between the filler and the rubber matrix,so it showed a small Heat accumulation.At the same ratio,the mechanical properties of nano-Al2O3 filled composites were close to other fillers,and the thermal conductivity was significantly increased.The thermal conductivity was about 32.3%higher than that of carbon black N550 filled composites.The thermal conductivity of the object was 57.7%higher.SEM photographs found that Al2O3 filler can be dispersed very uniformly in the rubber matrix,and the cross-linking network of the composite material was relatively complete,which was of great significance for improving the service life of the material.
作者
赵锡锋
张子园
ZHAO Xi-feng;ZHANG Zi-yuan(Zhejiang Industry&Trade Vocational College,Wenzhou 325000,China;Taizhou University,Taizhou 318000,China)
出处
《塑料科技》
CAS
北大核心
2020年第4期59-62,共4页
Plastics Science and Technology
关键词
纳米氧化铝
复合材料
导热系数
力学性能
Nano alumina
Composite
Thermal conductivity
Mechanical properties
