M50自清洁砂浆涂层的制备及其抗污性能的研究  

Preparation of M50 self-cleaning mortar coating and its anti-fouling performance

作　　者：孟晓鹏 陈小军 张云 宋普涛 夏京亮 王晶 侍玉成 MENG Xiaopeng;CHEN Xiaojun;ZHANG Yun;SONG Putao;XIA Jingliang;WANG Jing;SHI Yucheng(China Road and Bridge Corporation,Beijing 100081,China;China Academy of Building Research,Beijing 100013,China)

机构地区：[1]中国路桥工程责任有限公司,北京100081 [2]中国建筑科学研究院有限公司,北京100013

出　　处：《混凝土》2022年第10期132-134,共3页Concrete

摘　　要：采用改性纳米二氧化硅凝胶类疏水剂(TS)、聚硅氧烷(KR)及十三氟辛基三甲氧基硅烷(FGW)制备自清洁M50砂浆涂层,对比研究了疏水剂的种类及掺量对M50自清洁砂浆流动度、抗压强度、吸水率、表面接触角及抗污性能的影响。研究结果表明,疏水剂掺入后砂浆流动度略有增大,抗压强度略有降低,吸水率显著降低,表面接触角增大,抗污性能显著增加。相对而言,掺入1%的KR时,砂浆的流动度增大最明显,掺入0.5%的TS时砂浆强度降低最少,掺入1%TS时砂浆吸水率降低最明显,此时砂浆的表面接触角最大,抗污性能最显著。The self-cleaning M40 mortar coating was prepared by modified nano-silica gel like hydrophobic agent(TS),polysiloxane(KR)and tridecafluorooctyl trimethoxysilane(FGW).The effects of the type and amount of hydrophobic agent on the fluidity,compressive strength,water absorption,surface contact angle and anti-fouling properties of M50 self-cleaning mortar were compared.The results show that the fluidity of mortar increases slightly,the compressive strength decreases slightly,the water absorption decreases significantly,the surface contact angle increases,and the anti-fouling performance increases significantly with the addition of hydrophobic agent.In contrast,when 1%KR is added,the fluidity of mortar increases most obviously.When 0.5%TS is added,the strength of mortar decreases least.When 1%TS is added,the water absorption of mortar decreases most obviously.At this time,the surface contact angle of mortar is the largest,and the anti-fouling performance is the most significant.

关 键 词：自清洁砂浆涂层 疏水材料 吸水率 接触角 抗污性能 

分 类 号：TU528.01[建筑科学—建筑技术科学]