掺脱硫石膏晶须的脱硫粉刷石膏性能研究.pdfVIP

学兔兔 新 建蟓粉 中国科技核心期刊 撸脱硫石富晶须硇脱硫粉刷石謇 II~|E研夯 何玉鑫，万建东，唐永波 (江苏省一夫新材料科技有限公司，江苏 南京 21 1 178) 摘要：以脱硫建筑石膏为主要原料，在缓凝剂、脱硫石膏晶须和保水剂作用下制备性能优异的粉刷石膏。结果表明，当sc缓凝 剂掺量为0．4％，脱硫石膏晶须掺量为3％时，制备的粉刷石膏初凝、终凝时间分别为66、72 min，抗压、抗折强度和抗冲击功分别较 未掺缓凝剂的粉刷石膏提高了24．8％、36．1％和21．5％；粘结强度和保水率较未掺脱硫石膏晶须的粉刷石膏分别提高了72．0％、 8．8％。脱硫石膏晶须与羟丙基甲基纤维素醚(HPMC)两者相互协同改善粉刷石膏的性能，晶须掺量为3％、HPMC掺量为0．1％时，粉 刷石膏的抗压、抗折强度，保水率和粘结强度分别较掺0．I％HPMC的粉刷石膏提高了17．1％、40．O％、3．1％和66．7％。 关键词：脱硫石膏晶须；HPMC；补强；增韧；粉刷石膏 中图分类号：TU56~4．5；TQ177．3 文献标识码：A 文章编号：1001—702X(2013)12—0017—03 Effects of desulfurization gypsum whisker on desulfurization plaster gypsum HE Yuxin，WAN Jiandong，TANG Yongbo (Jiangsu Yi Fu New Material Technology Co．Ltd．，Nanjing 211178，Jiangsu，China) Abstract：Quality plaster gypsum is prepared with desulfurization building plaster as the main materials under the function of retarder，desulfurization gypsum whisker，and water retention agent．The results showed that when SC retarder and whisker were 0．4％ and 3％，the initial time and final time was 66 min and 72 min separately；the compressive strength，flexural strength and impact ener- gY improved by 24．8％，36．1％ and 21．5％ respectively~shear bond strength and water retention were increased by 72．0％ and 8．8％： when whisker and Hydroxypropyl methyl cellulose ether(HPMC)were 3％ and 0．1％，the compressive strength，flexural strength，water retention and shear bond strength were enhanced by 17．1％，40．O％，3．1％ and 66．7％ compared with that with O．1％ of HPMC． Key words：desulfurization gypsum whisker；HPMC；re