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玻璃纤维增强的热固性树脂和热塑性塑料,既有 FRP 组份的结构牢固性,又有热塑性塑料的耐化学性。本文即旨于介绍这类 PVC—FRP 复合材料的研究及其在管生产中的应用。在此应用中,热塑性塑料是用作密封衬管,把它与高强纤维缠绕的外壳结合在一起。已研制出一种适用于纤维缠绕的特殊间苯型聚酯树脂,以保证与 PVC 有很好粘接。从经济效益上看,在所有的压力范围里,纤维缠绕的 FRP,缠在薄壁的 PVC 管上,成本可比全 PVC 管适当的降低。特别是较大的管径及较高压力范围时,成本低的优越性就更显著了。纤维缠绕 PVC 复合管的性能与成本的关系也业已确定。由于采用了 E—105树脂做胶接层,能使纤维缠绕 PVC 复合管进一步增强,用通用的聚酯、乙烯基酯树脂或环氧树脂进行纤维缠绕。纤维缠绕树脂要依据最终使用时的环境条件来选择。另外改进性能,还可通过在树脂中添加填料或在纤维缠绕层中添加砂子来实现,采取这种办法,发现成本增加不大,而 FRP 壁厚可增加两倍多,从而极大地改进了管的刚性和冲击强度。
Fiberglass-reinforced thermosetting resins and thermoplastics combine the structural robustness of both FRP components with the chemical resistance of thermoplastics. This article aims to introduce the study of such PVC-FRP composites and its application in tube production. In this application, the thermoplastic is used as a sealing liner and is combined with a high-strength fiber wound enclosure. A special meta-benzene type polyester resin suitable for filament winding has been developed to ensure good adhesion to PVC. Economically, fiber-wrapped FRP wraps around thin-walled PVC tubing at all pressure ranges, with the cost savings of being lower than with full PVC tubing. Especially the larger diameter and higher pressure range, the advantages of low cost even more significant. The relationship between the performance and cost of fiber-wound PVC composite pipe has also been established. As a result of the use of E-105 resin adhesive layer, fiber-wound PVC composite pipe can be further enhanced, with common polyester, vinyl ester resin or epoxy resin filament winding. Fiber-wound resin to be selected according to the environmental conditions of the final use. In addition to improved performance, this can be achieved by adding filler to the resin or by adding sand to the wound layer of fiber, which results in a small increase in cost and a doubling in the FRP wall thickness, greatly improving the tube The rigidity and impact strength.