Pultruded fibre-reinforced furfuryl alcohol resin composites: 1. Process feasibility study

Composites Manufacturing Pub Date : 1995-01-01 DOI:10.1016/0956-7143(95)93712-S

C.C.M Ma, M.S Yn, J.L Han, C.J Chang, H.D Wu

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引用次数: 16

Abstract

Furfuryl alcohol (FA) prepolymer was developed to fabricate pultruded fibre-reinforced FA resin composites. FA monomer with p-toluene sulfonic acid was used to synthesize the FA prepolymer, which provided a good balance between processing parameters (including pot life, reactivity and wetting ability) and properties of the composites. The reactions occurring during synthesis of the FA prepolymers and the post-curing treatment were investigated by ¹H n.m.r. and i.r. spectroscopies. It was found that the mechanical properties of the composites increase with increasing die temperature or decreasing pulling rate. From the study on the mechanical properties of the composites, it was found that an optimum post-cure time exists when the post-cure temperature is above 200°C. It was also found that three kinds of reaction - crosslinking, chain extension polymerization and the transformation of the methylene ether linkage to a methylene linkage -occur during the post-curing treatment.

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拉挤纤维增强糠醇树脂复合材料:工艺可行性研究

采用糠醇预聚物制备了拉挤纤维增强糠醇树脂复合材料。采用FA单体与对甲苯磺酸合成FA预聚体，在工艺参数(锅内寿命、反应性和润湿性)与复合材料性能之间取得了较好的平衡。利用核磁共振和红外光谱研究了FA预聚物合成过程和固化后处理过程中的反应。结果表明，复合材料的力学性能随模具温度的升高和拉拔速率的降低而提高。通过对复合材料力学性能的研究，发现后固化温度在200℃以上时存在最佳后固化时间。在硫化后处理过程中还发生了交联、扩链聚合和亚甲基醚键转化为亚甲基键的三种反应。

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Composites Manufacturing

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