纤维基抗水材料的制备

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

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。

Styrene （SM）, methyl methacrylate （MMA） and butyl acrylate （BA） were used tosynthesisepolyacrylic emulsion by core-shell e- mulsion 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 val- ues of the materials were tested respectively. The experiment results showed that under condition of m（ Polyacrylic Emulsion）：m（ Rejects Fi- bers） = 2：1, the Cobb values of four materials prepared using from emulsions reached 5.0,9. 8,19. 2 and 7. 1 g/m2 respectively. 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）.