一种高性能渗透可控混凝土模板衬垫的制备及性能研究

摘要

选用三种不同线密度的聚丙烯（ PP）纤维进行开松处理，在附加涤纶基布后采用先针刺、后热轧的方法制备了一种高性能渗透可控混凝土模板衬垫（ CPFL）。研究了针刺、热轧工艺对产品性能的影响，探讨了不同制备工艺得到的CPFL在混凝土浇筑中的使用效果。研究结果表明，以线密度为2．75 dtex的PP纤维为原料，控制针刺密度为120刺／cm2、热轧温度为180℃，可以制备出综合性能最佳的最终产品，其浇筑后的效果最好。%Three kinds of the polypropylene ( PP) fibers with different linear density were opened.After adhering polyester base cloth, the needling process and hot rolling process was used to prepare the high-quality controlled permeability formwork liner ( CPFL) one after another.The influence of the needling and hot rolling process on product performance was researched.And the actual application effect of CPFL with different processes was discussed.The results showed that the comprehensive performance of the final product with linear density 2.75 dtex polypropylene fibers, 120 c/cm2 needling density and 180℃hot rolling temperature was the best, and the effect of actual concrete casting was the best, too.