| abstract |
The invention provides a fiber-reinforced composite as a multilayer tube materialnThe pipe has high strength and high dimensional stability, and is also excellent in workability; moreover, the present invention provides a cold and warm water piping system, which is excellent in dimensional stability and improves workability. The fiber-reinforced composite tube of the present invention includes: a tubular first layer including a polyolefin-based resin; a tubular second layer including a polyolefin-based resin, glass fiber and a compatibilizer; and, a tubular third A layer comprising a polyolefin-based resin; and the second layer is arranged outside the first layer, and the third layer is arranged outside the second layer; wherein the thickness of the second layer is different from that of the first layer The ratio of the total thickness of the first layer, the second layer, and the third layer is 0.3 or more and 0.8 or less; and the content of the polyolefin-based resin in 100% by weight of the second layer is 45% by weight or more and 84 The content of the glass fiber is 15% by weight or more and 45% by weight or less, and the content of the compatibilizer is 0.5% by weight or more and 10% by weight or less. |