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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

Active Publication Date: 2014-03-19
山东方大新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, metal pipeline is the most traditional transportation channel, but this kind of pipeline is prone to oxidation and corrosion, and it is heavy and inconvenient to transport. For example, due to the large difference in shrinkage coefficient between steel wire and plastic, it is easy to be affected by pressure fluctuations, temperature changes, etc. The recycling method of steel wire mesh skeleton plastic composite pipe is seriously polluting, time-consuming and power-consuming, and the process is not easy to control, posing safety hazards

Method used

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  • Continuous fiber reinforced polyolefin composite tube and preparation technology thereof
  • Continuous fiber reinforced polyolefin composite tube and preparation technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The continuous fiber reinforced polyolefin composite pipe of the present invention comprises an inner plastic pipe 1, an inner hot melt adhesive layer 2 is arranged outside the inner layer plastic pipe 1, and a continuous fiber impregnated belt 3 is arranged on the inner hot melt adhesive layer 2, and the continuous fiber impregnated The belt 3 is provided with an outer hot-melt adhesive layer 4, and an outer plastic tube 5 is arranged outside the outer hot-melt adhesive layer 4.

[0031] The continuous fiber impregnated belt 3 is made of impregnated glass fibers cross-helically wound.

[0032] The preparation process of the continuous fiber reinforced polyolefin composite pipe is to coat the inner plastic pipe 1 with the inner hot melt adhesive layer 2, then preheat the continuous fiber impregnated tape 3 and wrap it around the inner plastic pipe 1, and then coat the outer hot melt adhesive Layer 4, and finally wrap a layer of outer plastic pipe 5 on the outer layer to...

Embodiment 2

[0041] This example has the same product structure and preparation process as Example 1, except that the continuous fiber impregnated tape 3 is prepared by co-extruding 60% glass fiber and 40% polyolefin at 200°C, calendering and drawing A continuous fiber impregnated tape 3 was obtained.

[0042] The polyolefin is LLDPE.

[0043] Both the inner hot melt adhesive layer 2 and the outer hot melt adhesive layer 4 are maleic anhydride grafted polypropylene.

[0044] Both the inner layer plastic pipe 1 and the outer layer plastic pipe 5 are polypropylene with flame retardant and antistatic treatment.

[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 traction speed is 20r / min; the rolling speed is 18r / min.

Embodiment 3

[0049] The product structure and preparation process of this example are the same as those of Example 1, the difference is that the continuous fiber impregnated tape 3 is prepared by co-extruding 75% glass fiber and 25% polyolefin at 170°C, calendering and pulling A continuous fiber impregnated tape 3 was obtained.

[0050] Polyolefin is IPC.

[0051] Both the inner hot melt adhesive layer 2 and the outer hot melt adhesive layer 4 are maleic anhydride grafted polypropylene.

[0052] Both the inner layer plastic pipe 1 and the outer layer plastic pipe 5 are polypropylene with flame retardant and antistatic treatment.

[0053] The preheating temperature of the continuous fiber impregnated belt is 180°C, and the preheating time is 2 minutes.

[0054] The heating temperature of the whole composite tube is 240° C., and the heating time is 3 minutes.

[0055] The traction speed is 28r / min; the rolling speed is 22r / min.

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Abstract

The invention relates to a continuous fiber reinforced polyolefin composite tube and a preparation technology thereof. The continuous fiber reinforced polyolefin composite tube comprises an inner layer plastic tube; an internal heating glue-smelting layer is arranged outside the inner layer plastic tube; a continuous fiber impregnated tape is arranged outside the internal heating glue-smelting layer; an external heating glue-smelting layer is arranged outside the continuous fiber impregnated tape; an outer layer plastic tube is arranged outside the external heating glue-smelting layer. The preparation technology is that the inner layer plastic tube is coated with the internal heating glue-smelting layer, the continuous fiber impregnated tape is preheated and then wound on the inner layer plastic tube, and is coated with the external heating glue-smelting layer, and finally, the external heating glue-smelting layer is coated with the outer layer plastic tube to obtain the composite tube, and then the whole composite tube is heated to enable the mutual fusing and connection and fixation from the inner layer plastic tube, the internal heating glue-smelting layer, the continuous fiber impregnated tape, the external heating glue-smelting layer and the outer layer plastic tube, so as to obtain the continuous fiber reinforced polyolefin composite tube. The continuous fiber reinforced polyolefin composite tube and the preparation technology enhance the compression strength of the composite tube effectively, the crushed material of the composite tube can be directly recycled, the technology is simple, the cost is low, relatively long glass fibers in the crushed material are used as a reinforcing material, and the recycled material can be used as a high-strength reinforced modified material.

Description

technical field [0001] The invention relates to the field of plastic pipes, in particular to a continuous fiber reinforced polyolefin composite pipe and a preparation process thereof. Background technique [0002] At present, the commonly used high-pressure pipes on the market are mainly metal pipes or steel mesh skeleton plastic composite pipes. Among them, metal pipeline is the most traditional transportation channel, but this kind of pipeline is prone to oxidation and corrosion, and it is heavy and inconvenient to transport. For example, due to the large difference in shrinkage coefficient between steel wire and plastic, it is easy to be affected by pressure fluctuations, temperature changes, etc. The recycling method of plastic composite pipe with steel mesh skeleton is seriously polluted, time-consuming and power-consuming, and the process is not easy to control, which has potential safety hazards. Contents of the invention [0003] The purpose of the present invent...

Claims

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Application Information

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IPC IPC(8): F16L9/147B29D23/00
CPCB29D23/001F16L9/147
Inventor 张寿明罗金鹏谭洪生王晓华李文学宋飞飞胡秀丽王世坤王刚修
Owner 山东方大新材料科技有限公司
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