摘要
研究羟丙基甲基纤维素醚(HPMC)对发泡聚苯乙烯-磷石膏(EPS-磷石膏)复合浆体流变性、孔结构以及力学性能的影响规律。结果表明,随着HPMC掺量增加,浆体的屈服应力与塑性粘度逐渐增加,基本呈线性关系,并利用Bingham模型对浆体流变曲线进行拟合,拟合效果较好;石膏浆体的孔结构、力学性能得到改善;提出了针对EPS-磷石膏复合浆体的最佳HPMC掺量为0.20%,此时复合浆体中的EPS泡沫颗粒分布均匀,复合浆体的流动度和粘度得到改善,提高了EPS-石膏复合浆体的稳定性。
The effect of hydroxypropyl methyl cellulose ether(HPMC)on rheological properties,pore structure and mechanical properties of EPS-phosphorus gypsum composite paste were studied.The results show that with the increase of HPMC content,the yield stress and plastic viscosity of paste increase gradually,showing a linear relationship.The Bingham model is used to fit the rheological curve of gypsum paste,and the fitting effect is better.The pore structure and mechanical properties of gypsum paste are improved.The optimum HPMC content for EPS-phosphorus gypsum composite slurry is 0.20%.At this time,the EPS foam particles in the composite slurry are evenly distributed,the fluidity and viscosity of the composite slurry are improved,and the stability of EPS-gypsum composite slurry is improved.
作者
张雨薇
戴绍斌
马保国
孙仲达
李玉博
ZHANG Yuwei;DAI Shaobin;MA Baoguo;SUN Zhongda;LI Yubo(School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China;School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China)
出处
《硅酸盐通报》
CAS
北大核心
2020年第1期206-212,218,共8页
Bulletin of the Chinese Ceramic Society
基金
“十三五”国家重点研发计划(2016YFC0700904)
湖北省重大科技创新项目(2017ACA177)
关键词
EPS-磷石膏复合材料
保水剂HPMC
塑性粘度
流变性
孔结构
力学性能
EPS-phosphorus gypsum composite
water retention agent HPMC
plastic viscosity
rheological property
pore structure
mechanical property
