摘要
选用中碱B1 7玻璃纤维布及天然植物纤维网格织物作为氯氧镁水泥制品的增强材料。利用表面活性剂脲醛树脂胶液、聚醋酸乙烯酯乳液处理玻纤 ,经耐老化、防潮效果等实验研究表明 ,氯氧镁水泥的最佳基础配比为m (MgO)∶V (MgCl2 ) =1 0 0 0 g∶45 0mL ,ρ (MgCl2 )为 1 2 4g/mL ;稀释 1 0 % (wB)的脲醛树脂作表面活性剂浸润玻纤 ,在氯氧镁水泥中掺入防水剂w (K3 ·XY6 ) 2 %～ 3 % ,制成的复合材料 ,玻纤与水泥的浸润角最小 ,弯曲强度较高 (72 2 3～ 77 5 3MPa) ,软化系数最高 (0 93 ) ,强度保留率达 95 %。用天然植物纤维网格织物制成的增强氯氧镁复合材料 ,浸润角较小 ,软化系数较高 (0 71～0 89) ,强度保留率高 (89%～ 98% )。表面活性剂能使玻璃纤维与氯氧镁水泥有更好的粘接 ;该活性剂既是防护层 ,又使起着骨架作用的玻璃纤维不被碱蚀 ;防水剂的掺入 ,改变了氯氧镁基体材料的结构组成和晶体形貌 ,从而延长了制品的耐候性 ,改善了制品变形翘曲问题。
By choosing the natural woven fabric and the B17 glass fiber drapery as reinforced materials of the fiber reinforced magnesium oxychloride composite material, Surfactants (veova and UF) was used to retreat the glass fiber. After modification, with the help of SEM and strain-experiment, the results were analyzed in aging and water-resistance. The study showed that the best base design of magnesium oxychloride cement is m(Mgo)∶V(MgCl 2)=1 000 g∶450 mL; the density of magoxide is 1.24 g·mL -1 .As the surface active agents, thinning 10%(w B) UF can intensively bone glass fiber and cement.The samples of composite material were made of magnesium oxychloride cement which was put into the reagent of water-proof Web (K 3·XY 6) 2%～3%. The angle of impregnant is small between glass fiber and cement, the tenacity of deformation is higher (72.23～77.53 MPa),the rate of softening is biggest(0.93), the reserve rate of tenacity reaches 95%.The nutural woven fabric was reinforced magnesium oxychloride composite material.The actives act not only as protection but also antalkaline.The water-proof changes structure and crystalloid appearance of base materials,prolonging the age of composite material, modifying deformation of material.
出处
《桂林工学院学报》
2001年第3期271-275,共5页
Journal of Guilin University of Technology
基金
国家重点攻关项目子专题"镁混凝土包装构件改性研究"资助
