摘要
选用自由基溶液聚合的方式合成氟硅改性丙烯酸酯树脂,加入固化剂制得双组分石膏砌块防水剂。研究了有机硅功能单体、有机氟功能单体对防水剂憎水性能的改性效果,探讨了功能单体的作用机理。分别选用外涂和内掺的方法将制得的防水剂用于石膏砌块试样中,研究其对石膏砌块试样的抗折、抗压强度、吸水率以及软化系数的影响。试验结果表明:外涂防水剂的方法可明显降低石膏砌块试样浸水2h的吸水率;内掺防水剂的方法对石膏砌块试样的浸水2h、24h吸水率均有了一定程度的改善,其24h软化系数为0.71,达到防潮石膏砌块的标准要求。
A kind of gypsum block waterproofing agent is introduced, which is made of fluorine silicon modified acrylate resin and hardener. The modification effect of organic silicon and organic fluorine monomers on the water resistant of the waterproofing agent is researched. The waterproofing agent is respectively applied on gypsum block samples by coating or doping method. Effects of the agent on flexural strength, compressive strength and water absorption of gypsum block samples are studied. The experimental results show that the water absorption of gypsum block sample coated with waterproofing agent in water for 2h is significantly reduced; and the water absorption of gypsum block sample added waterproofing agent in water for 2h and 24h is also reduced, which softening coefficient reaches 0.71 for 24h, and fulfills the standard requirement of moisture resistant gypsum blocks.
出处
《砖瓦》
2012年第5期53-56,共4页
Brick-tile
关键词
防水剂
接触角
憎水性能
石膏砌块
waterproofing agent, contact angle, water resistant property, gypsum block
