Cell evolution and compressive properties of styrene-butadiene-styrene toughened and calcium carbonate reinforced polystyrene extrusion foams with supercritical carbon dioxide
Cell evolution and compressive properties of styrene-butadiene-styrene toughened and calcium carbonate reinforced polystyrene extrusion foams with supercritical carbon dioxide
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超临界二氧化碳苯乙烯-丁二烯-苯乙烯增韧和碳酸钙增强聚苯乙烯挤出泡沫的泡孔演化和压缩性能
DOI：
10.1002/app.43508
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发表时间：
2016
影响因子：
3
通讯作者：
Mou Wen Jie
中科院分区：
文献类型：
--
作者：
Jing Xin;Peng Xiang Fang;Mi Hao Yang;Wang Yuan Sheng;Zhang Shuidong;Chen Bin Yi;Zhou Hua Min;Mou Wen Jie
聚苯乙烯（PS）泡沫塑料已被广泛应用于各个领域，但其机械强度低、脆性大的特点限制了其更广泛的应用。在这项研究中，苯乙烯-丁二烯-苯乙烯（SBS）和碳酸钙（CaCO 3）纳米粒子熔融共混与PS和挤出发泡与超临界二氧化碳作为发泡剂，同时增韧和增强PS泡沫。在相同发泡条件下，SBS和CaCO 3的加入对复合泡沫的泡孔结构和压缩性能有显著影响。我们发现，细胞结构的演变与系统的粘度高度相关。当橡胶相SBS含量为20%时，泡孔直径减小了20.7%，压缩模量提高了289.5%。当加入5%的刚性纳米碳酸钙后，泡孔直径进一步减小了72.2%，压缩模量提高了379.2%。© 2016 Wiley Periodicals，Inc. J.应用聚合物Sci.2016，133，43508.
Polystyrene (PS) foams have been used in various fields, whereas its broader application is limited by its low mechanical strength and brittle features. In this study, styrene–butadiene–styrene (SBS) and calcium carbonate (CaCO3) nanoparticles were melt‐blended with PS and extrusion‐foamed with supercritical carbon dioxide as a blowing agent to simultaneously toughen and reinforce PS foams. Under the same foaming conditions, the addition of SBS and CaCO3was shown to have a significant influence on the cell structure and the compressive properties of the composite foams. We found that the cell structure evolution was highly correlated with the system viscosity. When the rubbery‐phase SBS content was 20%, the cell diameter decreased by 20.7%, and the compressive modulus was enhanced by 289.5%. With the further addition of 5% rigid CaCO3nanoparticles, the cell diameter was further reduced by 72.2% and the compressive modulus was improved by 379.2%. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2016,133, 43508.