聚甲基氢硅氧烷对脱硫石膏砌块性能的影响  

Effect of polymethylhydrosiloxane on properties of desulfurized gypsum blocks

作　　者：王楠 陈畅[1] WANG Nan;CHEN Chang(School of Materials Science and Engineering,Xi’an University of Architecture and Technology,Shanxi Xi’an 710055)

机构地区：[1]西安建筑科技大学材料科学与工程学院,陕西西安710055

出　　处：《天津化工》2022年第1期57-60,共4页Tianjin Chemical Industry

摘　　要：目的:本文以聚甲基氢硅氧烷和脱硫石膏为原材料,研究聚甲基氢硅氧烷的掺量对脱硫石膏砌块物理、力学和防水性能的影响。结果:当聚甲基氢硅氧烷掺量增至0.4%时,砌块的吸水率最小,力学性能最高,接触角增大至121.75°,说明形成的憎水膜趋于完整。结论:当聚甲基氢硅氧烷掺量大于0.4%,砌块表面憎水性的提升有限,反而会影响砌块的防水性能。Objective: Polymethylhydrosiloxane and desulfurized gypsum were used as raw materials in this paper. The influence of the content of polymethylhydrosiloxane on the physical, mechanical and waterproof properties of desulfurized gypsum blocks was studied. Results: when the content of polymethylhydrosiloxane increases to 0.4 wt.%, the water absorption value of the block is the lowest, the values of mechanical properties are the highest, and the contact angle increases to 121.75°, which indicates that the hydrophobic film tends to be complete. Conclusion: When the content of polymethylhydrosiloxane is more than 0.4%, the improvement of hydrophobicity of block surface is limited, which affects the waterproof performance of block.

关 键 词：聚甲基氢硅氧烷 脱硫石膏 物理性能 力学性能 防水性能 

分 类 号：TQ177.31[化学工程—硅酸盐工业]