摘要
本文研究制备一种膨润土类建筑材料。主要工艺是将质量分数为65%的天然钠基膨润土分别与质量比为4∶1,5∶1,6∶1的凡士林和石蜡混合,经过熟化与定型,制备了(1#,2#,3#)3个建筑密封膏试样。按照相关行业标准对上述3种建筑密封膏试样在非限制状态下的一些性能进行了测试。研究结果表明:在非限制状态下,试样2h的体积膨胀率分别为159.3%、164.5%、165.2%;渗透系数分别为1.15×10-8cm/s、0.96×10-8cm/s、2.18×10-8cm/s;-18℃条件下,3个试样低温柔性好;1#,2#试样在80℃加热2h不流淌;冻融循环试验结果显示,3个试样的抗冻融性能良好。其中,2#样品的性能均能达到建筑密封材料的使用标准。
A type of nanocomposites made from bentonite for building sealants was studied in this article. After aging and stereotyping, three samples were prepared by 65% of the mass fraction of Na base bentonite mixed with vaseline and paraffin, the ratio between vaseline and paraffin were 4：1, 5：1, 6：1. Under unrestricted state, some properties of samples were investigated. The results showed that after 2 hours volume expansivities are 159.3%, 164.5%, 165.2%, with their permeability coefficients are I. 15 - 108cm/s, 0.96 - 10Scm/s, 2.18 10Scm/s respectively. All samples showed favorable low temperature flexibility at -18℃. The samples number 1# and 2# have no flowability heated at 80~C for 2 hours; Freeze-thaw cycle test showed that all the samples freeze- thaw resistance performance are good. Experimental results show that the performance of the 2 sample can be able to reach the standard of building sealant.
出处
《中国非金属矿工业导刊》
2013年第2期24-26,共3页
China Non-Metallic Minerals industry
基金
辽宁省博士启动基金项目(20121072)
辽宁省教育厅基金项目(L201106)
关键词
膨润土
建筑材料
性能测试
bentonite
building materials
performance testing
