纤维基抗水材料的制备

Preparation Water-resistance Material from Rejects Recovered Fibers and Polyacrylic Emulsion

关键词:  丙烯酸乳液  核壳乳液聚合法  纤维基抗水材料  Cobb值  扫描电子显微镜

Key Words:polyacrylic emulsion  core shell emulsion polymerization  fiber based material  Cobb value  SEM

摘要:以苯乙烯、甲基丙烯酸甲酯和丙烯酸丁酯作为单体,在不同单体配比条件下,用核壳乳液聚合法合成了4种丙烯酸乳液。将制得的丙烯酸乳液分别同浆渣经共同分散、涂膜、干燥,制得4种纤维基抗水材料。通过对其Cobb值进行测定,研究了材料的抗水性。结果表明,在丙烯酸乳液与浆渣有效质量比为2∶1时,4种材料的最小Cobb值分别为5.0、9.8、19.2、7.1 g/m2。用单体质量比为1∶1∶2的乳液制备出的材料抗水性最稳定。并用扫描电子显微镜(SEM)对材料的表面形态结构进行了观察。

Abstract:Styrene (SM), methyl methacrylate (MMA) and butyl acrylate (BA) were used tosynthesisepolyacrylic emulsion by core shell emulsion polymerization. Four kinds of emulsions were prepared by using various ratios of the monomers. Then, the emulsions and the rejects fibers were dispersed, coated, and dried together. Finally, fiber based water resistant materials were successfully fabricated. The Cobb values of the materials were tested respectively.The experiment results showed that under condition of m(Polyacrylic Emulsion)∶m(Rejects Fibers)=2∶1, the Cobb values of four materials prepared using from emulsions reached 5.0,9.8,19.2 and 7.1 g/m2respectively. The water resistant of the material prepared by using the emulsion which was synthesized on the basis of monomer mass ratio of 1∶1∶2 achieved the most stable property. The surface morphological structure of the materials was studied by using scanning electron microscope (SEM).