导电TiO_(2)的表面改性及在丙烯酸涂料中的流变性能研究  

Surface modification of conductive TiO and research on its rheological properties in acrylic coatings

作　　者：姚宇 左士祥[1,2] 唐骏 刘文杰 李霞章[1] 姚超[1,3] YAO Yu;ZUO Shi-xiang;TANG Jun;LIU Wen-jie;LI Xia-zhang;YAO Chao(School of Petrochemical Engineering,Changzhou University,Changzhou 213164,China;Xuyi R&D Center of Attapulgite Applied Technology,Changzhou University,Xuyi 211700,China;Zhejiang Coloray Technology Development Co.,Ltd.,Huzhou 313200,China)

机构地区：[1]常州大学石油化工学院,江苏常州213164 [2]常州大学盱眙凹土研发中心,江苏盱眙211700 [3]浙江凯色丽科技发展有限公司,浙江湖州313200

出　　处：《现代化工》2021年第9期123-128,共6页Modern Chemical Industry

基　　金：江苏省重点研发计划(BE2017064);浙江省重点研发计划(2019C01083);淮安市自然科学研究计划(HAB201952)。

摘　　要：以TiO_(2)为核体,通过共沉淀法制备Sb-SnO_(2)/TiO_(2)(SST)导电复合材料,并采用甲基苯基二甲氧基硅烷(MPD)对其进行表面改性。利用XRD、SEM、TEM、FT-IR、水接触角和TG等技术对导电材料进行表征。结果表明,MPD的合适用量为3%且以化学键形式结合于SST表面,其包覆层厚度为3~5 nm。将改性Sb-SnO_(2)/TiO_(2)(MSST)复合材料加到丙烯酸树脂中制备导电涂料,并将其涂覆在ABS基板上固化后得导电涂层。结果表明,MSST导电涂层的表面电阻小于SST导电涂层,添加量为18%时效果较佳。通过流变仪测定导电涂料的流变性能,结果表明,与SST相比,MSST大幅提高了丙烯酸导电涂料的分散性、储存稳定性和机械性能。Sb-SnO_(2)/TiO_(2)(SST)conductive composites are prepared through a co-precipitation method using TiO_(2)as the carrier,and the obtained SST is modified by methylphenyldimethoxysilane(MPD).The modified SST conductive composites(MSSTs)are characterized by means of XRD,SEM,TEM,FT-IR,water contact angle and TG techniques.It is found that the appropriate addition amount of MPD is about 3%.MPD organic layer with a thickness of 3-5 nm exists in the form of chemical bonds on the surface of MSST.Conductive coatings are prepared through adding MSSTs into acrylic resin,and then coated onto ABS substrate and cured to obtain a conductive coating.The results show that the optimum addition amount of MSST is 18%,and the surface resistance of MSST conductive coating is lower than that of SST conductive coating.The rheological properties of conductive coatings are measured by means of a rheometer.It is indicated that compared to SST MSST improves more significantly the dispersion,storage stability and mechanical property of acrylic conductive coatings.

关 键 词：导电氧化钛 甲基苯基二甲氧基硅烷 有机表面改性 表面电阻 流变特性 

分 类 号：TQ134.1[化学工程—无机化工]