防水防油剂的制备及其在非织造布后整理中的应用

Preparation of a water-and oil-repellent agent and its application in non-woven fabric finishing

为获得具有防水防油功能的非织造布,采用本体聚合法制备含氟防水防油剂,然后以其为整理剂对非织造布进行后整理。优化制备防水防油剂的聚合条件,探究整理液质量分数和整理温度等对非织造布防水防油性能的影响,并表征整理所得纺黏非织造布的防水防油性能。结果表明:当聚合温度为70℃,含氟单体与共聚单体甲基丙烯酸二甲氨乙酯的质量比为5∶5,引发剂过氧化苯甲酸叔丁酯质量分数为2.0%时,可获得性能良好的防水防油剂;当整理液质量分数为9.0%,整理温度为115℃时,水和石蜡的接触角分别为130.21°和114.85°;相比未整理的非织造布,整理后非织造布的纤维上负载有防油性物质,防油等级测试可达到6级,但断裂强力和断裂伸长几乎无变化,透气性能也未受影响。该研究结果可为防水防油非织造布的制备提供参考。

In order to obtain a non-woven fabric with water-and-oil-repellent functions, a fluorine-containing water-and-oil-repellent agent was prepared using bulk polymerization method and then it was used as a finishing agent for non-woven fabric finishing. Next, the polymerization conditions for the preparation of the water-and-oil-repellent agent were optimized to investigate the effects of finishing liquid mass fraction and finishing temperature on the water-and-oil-repellent performance of the nonwoven fabric. Then, the water-and-oil-repellent performance of the spunbonded non-woven fabric obtained after finishing was characterized. The results show that at the polymerization temperature of 70 ℃, when the mass ratio of fluorine-containing monomer to dimethylaminoethyl methacrylate is 5∶5, and the mass fraction of initiator tert-butyl peroxybenzoate is 2.0%, it is feasible to obtain a good water-and oil-repellent agent;when the mass fraction of the finishing solution is 9.0% and the finishing temperature is 115 ℃, the contact angles of water and paraffin are 130.21°and 114.85°, respectively;compared with unfinished nonwoven fabric, the fibers of the nonwoven fabric after finishing are loaded with oil-repellent substances, and the oil-proof grade test can reach level 6, but the breaking strength and elongation at break almost remain unchanged, and the air permeability is not affected. The research results can provide reference for the preparation of waterproof and oil-repellent nonwoven fabrics.