不同填充密度的梯度结构复合滤材的制备及其性能

发布时间：2018-05-22 19:06

本文选题：熔体静电纺 + 聚丙烯　；参考：《纺织学报》2017年07期

【摘要】：为使滤材在同等过滤效率下具有较低的过滤阻力,以聚丙烯(PP)为原料,用熔体静电纺丝技术在线制备了纤维填充密度不同的梯度结构复合滤材。研究了不同收卷速度下制备的复合滤材的过滤效率,发现复合滤材的过滤效率随收卷速度的增加而降低;选择3种不同收卷速度制备出3种同等厚度的纤维网,并计算其对应的纤维填充密度;最后在聚丙烯纺粘非织造基材上直接沉积3层不同填充密度的纤维网,经热压制备梯度结构复合滤材。结果表明,在同等过滤效率下,纤维填充密度不同的梯度结构复合滤材具有低阻特性,对粒径大于等于2.0μm颗粒的过滤效率最高达87.0%,过滤阻力为8.0 Pa,透气率为187.0 mm/s。
[Abstract]:In order to make the filter material have lower filtration resistance at the same filtration efficiency, the gradient structure composite filter with different fiber filling density was prepared by melt electrospinning with polypropylene (PP) as raw material. The filtration efficiency of composite filter material prepared at different winding speed was studied. It was found that the filtration efficiency of composite filter material decreased with the increase of reeling speed, and three kinds of fiber mesh of the same thickness were prepared by selecting three different rewinding speeds. Finally, three layers of fiber mesh with different density were deposited on polypropylene spunbonded nonwovens, and gradient composite filters were prepared by hot pressing. The results show that the gradient composite filter with different fiber filling density has low resistance under the same filtration efficiency. The maximum filtration efficiency for particles larger than 2.0 渭 m is 87.0 and the filtration resistance is 8.0Pa. the air permeability is 187.0 mm / s.
【作者单位】：生态纺织教育部重点实验室(江南大学);
【基金】：国家自然科学基金项目(51403084) 江苏省自然科学基金项目(BK20130142) 江苏省科技成果转化项目(BA2012021) 江南大学食品胶体与生物技术教育部重点实验室资助项目(JDSJ2013-05) 浙江省成纱组合加工技术重点实验室开放工程项目(嘉兴大学)(MTC2014-008)
【分类号】：TB33;TS176

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