阔叶木浆/间位芳纶沉析纤维复合纸的制备及其性能研究

Study on Preparation and Properties of Kraft Hardwood Pulp/Poly (meta-phenylene isophthalamide) Aramid Precipitated Fiber Composite Paper

关键词:  复合纸  沉析纤维  紫外屏蔽  疏水性能

Key Words:composite papers  precipitated fiber  UV Shielding  hydrophobicity

摘要:本研究将间位芳纶沉析纤维（PMIAF）添加到阔叶木浆（KHP）中，制备了KHP/PMIAF复合纸。采用多种手段对KHP/PMIAF复合纸的形貌结构、结晶性能、力学性能、热稳定性、紫外屏蔽性和润湿性等性能进行了表征。结果表明，间位芳纶沉析纤维和阔叶木浆之间存在着较强的氢键作用；复合纸的抗张指数随着间位芳纶沉析纤维用量的增加呈现先升高后降低的趋势，当KHP和PMIAF质量比为7∶3时，复合纸的抗张指数达到最大，为14.9 N·m/g，比纯KHP纸提高96.8%；复合纸的紫外屏蔽性、热稳定性、疏水性均随着间位芳纶沉析纤维用量的增加而升高。

Abstract:In this study， PMIAF was added in kraft hardwood pulp （KHP） to prepare KHP/PMIAF composite paper. The morphology， structure， crystallization properties， mechanical properties， thermal stability， UV shielding and wetting properties of KHP/PMIAF composite paper were characterized by various means. The results showed that the strong hydrogen bond between meta-aramid fibrid and hardwood pulp had existed. The tensile strength of the composite paper increased at first and then decreased with increasing weight content of PMIAF. When the mass ratio of KHP and PMIAF was 7∶3， the tensile index of composite paper reached the maximum of 14.9 N·m/g， which was 96.8% higher than that of KHP paper. The UV shielding， thermal stability and hydrophobicity of the composite paper could also be improved by adding PMIAF.