文献类型：期刊文献

中文题名：聚苯乙烯/氢氧化镁导热光扩散材料的制备及性能研究

英文题名：Preparation and properties of polystyrene/magnesium hydroxide thermal conductive light diffusion material

作者：林镇斌[1];朱惠豪[1];王玉[1];谢林生[1];李果[1];马玉录[1]

机构：[1]华东理工大学机械与动力工程学院,上海200237

年份：2024

卷号：38

期号：11

起止页码：8

中文期刊名：中国塑料

外文期刊名：China Plastics

收录：CSTPCD;;北大核心:【北大核心2023】；CSCD:【CSCD2023_2024】；

语种：中文

中文关键词：导热光扩散材料;聚苯乙烯;氢氧化镁;性能调控

外文关键词：thermal conductive light diffusion material;polystyrene;magnesium hydroxide;property regulation

摘要：选择折射率相匹配的聚苯乙烯(PS)聚合物与氢氧化镁(MH)无机填料,通过共混法制备了具有良好光学性能和导热性能的PS/MH导热光扩散材料。通过调节MH含量,以及采用多粒径的MH进行复配填充,结合微观形貌、光学性能、导热性能和力学性能的测试结果,对PS/MH导热光扩散材料的综合性能进行调控。结果表明,随着MH含量的增加,材料中形成了MH导热网络,透光率逐渐下降而雾度上升并趋于稳定值,同时导热性能得到显著提升。当MH含量为30%(质量分数,下同)时,采用多粒径的MH复配得到的PS-30-3导热光扩散材料的综合性能最优,透光率和雾度分别达到75.9%和92.70%;热导率达到0.52 W/(m·K),为纯PS热导率[0.05 W/(m·K)]的10倍。
In this study,a thermal conductive light diffusion material with good optical and thermal conduction was prepared by blending polystyrene(PS)and magnesium hydroxide(MH)as an inorganic filler to match the refractive index.The comprehensive performance of the PS/MH thermal conductive light diffusion materials were regulated through adjusting the content of MH and employing the MH with a multi-particle size for compounding based on the experimental results obtained from the measurements on their micro-morphology,optical properties,thermal conductivity and mechanical properties.The results indicated that there was an MH thermal conductivity network formed in the matrix with an increase in the MH content.The transmittance of the thermal conductive light diffusion materials decreased gradually,their haze increased and tended to be stable,and their thermal conductivity was significantly improved.When 30 wt%MH with a multi-particle size content was incorporated,the resultant PS-30-3 thermal conductive light diffusion material obtained optimal comprehensive performance,its transmittance and haze reached 75.9% and 92.70%,respectively,and its thermal conductivity reached 0.52 W/(m·K),which is 10 times as much as that of pure PS[0.05 W/(m·K)].