废旧针刺非织造布制备复合板材研究

Study on preparation of composite plates with waste needle-punched nonwovens

采用厚度为2 mm、面密度为150 g/m2的废旧针刺非织造布作为增强材料,通过改变废旧针刺非织造布层数,分别制备纯的不饱和聚酯树脂板材及含1~4层废旧针刺非织造布的不饱和聚酯树脂复合板材,并对复合板材的拉伸、弯曲、冲击性能进行测试,研究废旧针刺非织造布层数对其力学性能的影响。试验表明,与纯的不饱和聚酯树脂板材比较,含废旧针刺非织造布的不饱和聚酯树脂复合板材的拉伸和冲击性能得到改善,但弯曲性能下降;随着废旧针刺非织造布层数的增多,复合板材的拉伸和冲击性能越好,含3层废旧针刺非织造布的复合板材的综合性能最佳。

The waste needle-punched nonwovens which were 2 mm in thickness and 150 g/m2 in areal density were used as reinforcing materials. By changing the number of layers of waste needle- punched nonwovens, the pure unsaturated polyester resin plate and the unsaturated polyester resin composite plates containing 1 -4 layers of waster needle-punched nonwovens were prepared, and then the tensile, flexural and impact properties of these plates were tested. The experiments showed that the tensile and impact properties of the composite plates improved while the flexural properties decreased compared with those of the pure unsaturated polyester resin plates. With the increase of the number of layers of waste needle-punched nonwovens, the performance of the composite plates was enhanced, and the composite plates containing three layers of waste needle-punched nonwovens possessed the best comprehensive performance.