高强高模聚乙烯纤维植物纤维纸基复合材料制备及性能

Preparation and properties of high strength and high modulus polyethylene fiber/plant fiber paper-based composite materials

摘要:

以高强高模聚乙烯（UHMWPE）短纤维和针叶木浆为原料，通过湿法成型技术结合树脂浸渍和热压的方法制备UHMWPE纤维纸基复合材料，研究了原纸制备工艺和浸渍热压工艺对UHMWPE纤维纸基复合材料的影响。结果表明：在一定范围内，定量、针叶木浆打浆度和针叶木浆比例的提高使UHMWPE纤维纸基复合材料的力学性能得到了提高，孔径分布更加均匀；采用酚醛树脂浸渍热压处理，可以进一步提高纸基复合材料的力学性能（抗张指数提高了3.8倍），同时具有较低的介电常数和介质损耗因数。

Abstract:

High strength and high modulus polyethylene (UHMWPE) staple fiber and softwood pulp were used as raw materials to prepare UHMWPE fiber paper-based composites materials by wet forming technology combined with resin impregnation and hot pressing. The effects of base paper preparation technology and hot pressing technology on UHMWPE fiber paper-based composite materials were investigated. The results show that, in a certain range, the mechanical properties of paper-based composites materials are improved and the pore size distribution is more uniform with the increase of quantity, beating degree of softwood pulp and proportion of softwood pulp. Phenolic resin impregnation and hot pressing treatment can further improve the mechanical properties of paper-based composite materials (tensile index increased by 3.8 times), and has lower dielectric constant and dielectric loss factor.