摘要
以导电氧化钛晶须(C-TiO_(2))为填料,利用硬脂酸钠改性C-TiO_(2)实现其选择性分布,并采用弹性体氢化苯乙烯-丁二烯-苯乙烯(SEBS)增容,通过熔融共混制备浅色导电C-TiO_(2)/聚丙烯(PP)/聚苯乙烯(PS)共混物。通过傅立叶红外光谱(FTIR)和水接触角表征硬脂酸钠对C-TiO_(2)的改性效果。利用SEM观察导电共混物断面形貌,PP/PS共混物呈海-岛结构,改性后的C-TiO_(2)更倾向分布在PP相,同时SEBS的使用显著增强了PP/PS的界面黏附。测试了C-TiO_(2)对导电共混物白度、力学性能以及导电性能的影响。结果表明:C-TiO_(2)提高了导电共混物的力学性能和白度,当C-TiO_(2)质量分数为23%时,导电C-TiO_(2)/PP/PS共混物体积电阻率低至7.16×10^(7)Ω·cm。制备的浅色导电C-TiO_(2)/PP/PS共混物在高色度要求的静电涂装领域具有潜在的应用前景。
Light-colored conductive titanium oxide whiskers(C-TiO_(2))/polypropylene(PP)/polystyrene(PS)conductive blends were prepared by melt blending method using sodium stearate modified C-TiO_(2) as filler and elastomer styrene-butadiene-styrene(SEBS)as compatibilizer.The modified C-TiO_(2) was characterized using Fourier transform infrared spectroscopy(FTIR)and water contact angle.The morphology of conductive blends was observed using scanning electron microscope(SEM)for a brittle section.PP/PS blends show sea island structure.The modified C-TiO_(2) prefers to locate at PP phase,while SEBS greatly enhances the Interfacial adhesion between PP and PS phase.More importantly,the whiteness,mechanical property,and electrical conductivity of conductive blends are studied.The results show that the mechanical properties are enhanced by C-TiO_(2).The selective location of C-TiO_(2) in PP phase is beneficial to the whiteness and electric conductivity of the conductive blends.The volume resistivity of C-TiO_(2)/PP/PS blends could drop to 7.16×10^(7)Ω·cm with the C-TiO_(2) content of 23%.The as-prepared C-TiO_(2)/PP/PS conductive blends show potential applications in the field of electrostatic coating with high chroma requirement.
作者
何勇
张仁智
桂豪冠
鲍光复
刁品云
姚超
HE Yong;ZHANG Renzhi;GUI Haoguan;BAO Guangfu;DIAO Pinyun;YAO Chao(School of Petrochemical Engineering,Changzhou University,Changzhou 213164,China;Yangzi Petrochemical Company,Nanjing 210048,China)
出处
《塑料工业》
CAS
CSCD
北大核心
2023年第3期171-177,共7页
China Plastics Industry
基金
中国石油化工股份有限公司横向课题(421065-3)
江苏省教育厅自然科学(22KJB430014)
常州大学科研启动经费(ZMF22020044)。
关键词
熔融共混
海-岛结构
改性
选择性分布
导电
Melt Blending
Sea-island Structure
Modification
Selective Location
Electric Conductivity
