水性微纳米石墨聚合物水泥防水涂料的制备  

Preparation of a waterproof coating based on waterborne micro-nano graphite polymer and cement

作　　者：吴昊 邓跃全[1] 杨威 吴婷 贾彬 Wu Hao;Deng Yuequan;Yang Wei;Wu Ting;Jia Bin(School of Materials Science and Engineering,Southwest University of Science and Technology,Mianyang Sichuan 621010,China;International Cooperative Laboratory of Applied Research on Micro and Nano Particles,Mianyang Sichuan 621010,China)

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010 [2]微纳米颗粒应用研究科技国际合作实验室,四川绵阳621010

出　　处：《化工矿物与加工》2022年第3期41-44,59,共5页Industrial Minerals & Processing

基　　金：国家核能开发重点项目(〔2019〕1341号)。

摘　　要：采用研发的低成本水性微纳米石墨材料,制备了一种高疏水性聚合物水泥防水涂料。探究了水性微纳米石墨浆体掺量、聚合物防水涂料与水泥质量比对该防水涂料各项物理力学性能的影响,结果表明:加入微纳米石墨浆体后,该防水涂料物理力学性能指标均能满足GB/T 23445-2009中Ⅱ型产品的要求,涂膜的抗渗性最高达0.76 MPa;泡水和泡盐水一个月后,其与原试块几乎无异,超出96 h的标准要求;涂膜表面的接触角最大为110°,能达到疏水材料的要求;SEM图显示片状石墨嵌入涂料中,使其结构致密,具有较强的屏蔽作用,同时又增强了涂料的疏水性能。本产品成本较低、性能优越、水性环保,为石墨矿物利用提供了一种新方法。A highly hydrophobic waterproof coating based on polymer and cement was prepared with the research and development of the waterborne micro-nano graphite material at low cost.The influence of the dosage of waterborne micro-nano graphite,and the mass ratio of polymer to cement on the performance of the waterproof coating was investigated.The results show that the physical and mechanical properties of the waterproof coating met the specification for the typeⅡproduct as stated in the Code GB/T 23445-2009 with addition of the micro-nano graphite slurry.The maximum impermeabi-lity of the coating was 0.76 MPa.After being soaked in water or brine for one month,it looks like the same as the original experimental module,which exceeds the limits of 96 h as stated in the Code.A maximum contact angle of 110°on the coating film satisfies the requirements of hydrophobic materials.SEM illustrated that the flake graphite embedded in the coating makes it compact and to have strong shielding effect,improve its hydrophobic performance.This cost effective product with high performance is waterborne and environmental friendly,resulting in a new approach to utilization of graphite minerals.

关 键 词：微纳米石墨 聚合物水泥防水涂料 涂膜 耐盐水性 抗拉强度 表面疏水性 抗渗性 

分 类 号：TD985[矿业工程—选矿]