Continuous fiber reinforced polyolefin composite tube and preparation technology thereof
A technology of continuous fiber and preparation process, applied in the field of continuous fiber reinforced polyolefin composite pipe and its preparation process, can solve the problems of inconvenient transportation, corrosion, susceptibility to pressure fluctuations, etc., achieve convenient use and transportation, increase compressive strength, low cost effect
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Example Embodiment
[0029] Example 1
[0030] The continuous fiber reinforced polyolefin composite pipe of the present invention includes an inner layer plastic pipe 1, an inner hot melt adhesive layer 2 is arranged outside the inner layer plastic pipe 1, and a continuous fiber impregnated tape 3 is arranged on the inner hot melt adhesive layer 2, and the continuous fiber impregnation The belt 3 is provided with an outer hot-melt adhesive layer 4 , and an outer plastic tube 5 is provided outside the outer hot-melt adhesive layer 4 .
[0031] The continuous fiber impregnated tape 3 is formed by interlacing and helical winding of impregnated glass fibers.
[0032] The preparation process of the continuous fiber reinforced polyolefin composite pipe is to coat the inner layer plastic pipe 1 with the inner hot melt adhesive layer 2, then preheat the continuous fiber impregnating tape 3 and wrap it around the inner layer plastic pipe 1, and then apply the outer hot melt adhesive. Layer 4, and finally ...
Example Embodiment
[0040] Example 2
[0041] The product structure and preparation process of this example are the same as those of Example 1. The difference is that the preparation method of the continuous fiber impregnated tape 3 is as follows: 60% glass fiber and 40% polyolefin are co-extruded, calendered and drawn at 200° C. The continuous fiber impregnated tape 3 was obtained.
[0042] The polyolefin is LLDPE.
[0043] The inner hot-melt adhesive layer 2 and the outer hot-melt adhesive layer 4 are both maleic anhydride grafted polypropylene.
[0044] Both the inner layer plastic tube 1 and the outer layer plastic tube 5 are polypropylene treated with flame retardant and antistatic.
[0045] The preheating temperature of the continuous fiber impregnated belt is 220°C, and the preheating time is 1 minute.
[0046] The heating temperature of the whole composite pipe is 220°C, and the heating time is 5 minutes.
[0047] The pulling speed is 20r / min; the calendering speed is 18r / min.
Example Embodiment
[0048] Example 3
[0049] The product structure and preparation process of this example are the same as those of Example 1. The difference is that the preparation method of the continuous fiber impregnated tape 3 is as follows: 75% glass fiber and 25% polyolefin are co-extruded, calendered and drawn at 170° C. The continuous fiber impregnated tape 3 was obtained.
[0050] The polyolefin is IPC.
[0051] The inner hot-melt adhesive layer 2 and the outer hot-melt adhesive layer 4 are both maleic anhydride grafted polypropylene.
[0052] Both the inner layer plastic tube 1 and the outer layer plastic tube 5 are polypropylene treated with flame retardant and antistatic.
[0053] The preheating temperature of the continuous fiber impregnated tape was 180°C, and the preheating time was 2 minutes.
[0054] The heating temperature of the whole composite pipe is 240°C, and the heating time is 3 minutes.
[0055] The pulling speed is 28r / min; the calendering speed is 22r / min.
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