偶联剂复配对棉杆皮纤维聚乳酸板材的影响

发布时间：2018-01-25 11:45

本文关键词： 偶联剂复配棉杆皮纤维聚乳酸力学性能　出处：《印染助剂》2017年04期 　论文类型：期刊论文

【摘要】：采用复配偶联剂改性处理棉杆皮纤维,再与聚乳酸(PLA)混炼制备阻燃复合板材,以进一步提高板材的力学强度。试验选用A171型硅烷偶联剂、KH550型硅烷偶联剂、TC114钛酸酯偶联剂两两进行复配,并对棉杆皮纤维进行改性处理。通过正交试验,得到偶联剂复配最优工艺条件为:KH550硅烷偶联剂与A171硅烷偶联剂复配、偶联剂总量3%、两种偶联剂比例1:1,所得复合板材的冲击强度、弯曲强度和拉伸强度均能达到最优,与未改性棉杆皮纤维的复合板材相比,各力学强度指标均有明显提高。
[Abstract]:In order to improve the mechanical strength of flame-retardant composite sheet, the cotton stem skin fiber was modified with compound coupling agent, and then mixed with polylactic acid (PLA) to improve the mechanical strength of the composite board. The experiment selected A171 silane coupling agent. KH550 type silane coupling agent TC114 titanate coupling agent was mixed and modified to cotton stem skin fiber. The orthogonal test was carried out. The optimum process conditions of coupling agent were obtained as follows: 1: KH550 silane coupling agent and A171 silane coupling agent, the total amount of coupling agent was 3, the ratio of two coupling agents was 1: 1, and the impact strength of composite plate was obtained. The bending strength and tensile strength can reach the optimum. Compared with the composite plate of unmodified cotton stem skin fiber, the mechanical strength indexes are obviously improved.
【作者单位】：大连工业大学纺织与材料工程学院;
【基金】：辽宁省自然科学基金(2013020081)
【分类号】：TB332
【正文快照】： 偶联剂最早作为无机填料被广泛使用,随后逐渐应用到复合材料中。因偶联剂的“分子桥”作用[1],一类基团能和填料表面作用,另一类基团能和树脂分子缠结,从而加强两种物质的界面结合力。其中,亲水的基团可与棉杆皮纤维分子表面上的羟基反应并在加热固化过程中伴随脱水反应而与基

【参考文献】