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Ultra-high molecular weight polyethylene multi-layer co-extrusion mine conveying pipe and preparation method thereof

An ultra-high molecular weight, multi-layer co-extrusion technology, applied in the field of polymer science, can solve the problems of bulky operation and installation, high price, etc.

Active Publication Date: 2016-06-15
GUIZHOU LANTU NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The mining conveying pipe prepared by the above patented technology has certain defects in comprehensive performance, and is relatively cumbersome during operation and installation, and the price is relatively expensive

Method used

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  • Ultra-high molecular weight polyethylene multi-layer co-extrusion mine conveying pipe and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1 of the present invention: Ultra-high molecular weight polyethylene multi-layer co-extruded mine conveying pipe, comprising an inner layer 1 of ultra-high molecular weight polyethylene, and a modified polymer layer 2 is arranged outside the inner layer 1 of ultra-high molecular weight polyethylene, The modified polymer layer 2 is provided with a functional polymer outer layer 3; the thickness of the ultra-high molecular weight polyethylene inner layer 1 is 2 mm, the thickness of the modified polymer layer 2 is 20 mm, and the thickness of the functional polymer outer layer 3 is 2 mm. 10mm. Wherein the material of the modified polymer layer 2 is a polymer modified by adding a filler, and the mass ratio of the filler to the polymer is 20:70; the polymer in the modified polymer layer 2 and the functional polymer The polymer of layer 3 is HDPE; the filler in modified polymer layer 2 is carbon fiber.

[0018] The preparation method of ultra-high molecular weight ...

Embodiment 2

[0019] Embodiment 2 of the present invention: ultra-high molecular weight polyethylene multi-layer co-extruded mine delivery pipe, comprising an inner layer 1 of ultra-high molecular weight polyethylene, and a modified polymer layer 2 is arranged outside the inner layer 1 of ultra-high molecular weight polyethylene, A functional polymer outer layer 3 is arranged outside the modified polymer layer 2; the thickness of the ultra-high molecular weight polyethylene inner layer 1 is 0.1 mm, the thickness of the modified polymer layer 2 is 5 mm, and the thickness of the functional polymer outer layer 3 5mm; wherein the material of the modified polymer layer 2 is a polymer modified by adding a filler, and the mass ratio of the filler to the polymer is 5:95; the polymer and function in the modified polymer layer 2 The polymers of the polymer outer layer 3 are equal amounts of UHMWPE and PP; the fillers in the modified polymer layer 2 are carbon black, antistatic agents and flame retarda...

Embodiment 3

[0021] Embodiment 3 of the present invention: ultra-high molecular weight polyethylene multi-layer co-extruded mine delivery pipe, comprising an inner layer 1 of ultra-high molecular weight polyethylene, and a modified polymer layer 2 outside the inner layer 1 of ultra-high molecular weight polyethylene, The modified polymer layer 2 is provided with a functional polymer outer layer 3; the thickness of the ultra-high molecular weight polyethylene inner layer 1 is 5 mm, the thickness of the modified polymer layer 2 is 50 mm, and the thickness of the functional polymer outer layer 3 is 5 mm. 20mm; wherein the material of the modified polymer layer 2 is a polymer modified by adding a filler, and the mass ratio of the filler to the polymer is 40:60; the polymer in the modified polymer layer 2 and the functional polymerization The polymer of the outer layer 3 is equal amounts of LDPE and PVC; the filler in the modified polymer layer 2 is calcium carbonate and calcium sulfate.

[002...

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Abstract

The invention discloses an ultra-high molecular weight polyethylene mining delivery pipe through a multi-layer coextrusion method and a manufacturing method thereof. The delivery pipe comprises an ultra-high molecular weight polyethylene inner layer, a modified polymer layer is arranged outside the ultra-high molecular weight polyethylene inner layer, and a functional polymer outer layer is arranged outside the modified polymer layer; the modified polymer layer is made of polymers subjected to modification of added filler, and the mass ratio of the filler to the polymers is 5:95 to 40:60. The mining delivery pipe manufactured through the multi-layer coextrusion method is adopted, the inner layer and the outer layer are made of ultra-high molecular weight polyethylene, and the delivery pipe has ultrastrong abrasive resistance, self-lubrication performance, high strength, stable chemical properties, high ageing resistance and other properties; filler modified polymer materials are adopted in the modified polymer layer; the polymer materials are adopted in the outer layer, so the delivery pipe has excellent antistatic performance, high strength, shock resistance and the like. Therefore, the experimental scheme is obtained through a great amount of experimental demonstration by the inventor. Comprehensive performance of products is controlled through the content of the ultra-high molecular weight polyethylene, the content of the filler and the content of the polymers, and the mining delivery pipe with excellent performance is obtained through optimization of process conditions.

Description

technical field [0001] The invention relates to the field of polymer science, in particular to an ultra-high molecular weight polyethylene multi-layer co-extruded mine delivery pipe and a preparation method thereof. Background technique [0002] Mine conveying pipes refer to conveying pipes for water supply and drainage, ventilation, grouting and gas discharge in mines. In the 1960s, hard PVC was used as a pipeline in foreign countries, but due to poor low temperature performance, it is easy to break and has poor wear resistance. After the 1970s, it was gradually replaced by HDPE pipes. Because HDPE pipes have corrosion resistance, good low-temperature toughness, service temperature below -40°C, good creep resistance and long service life, they are widely used. [0003] Multi-layer co-extrusion is a process in which different molten streams are extruded on multiple extruders, and then merged and co-extruded in a composite die to obtain a multi-layer composite product. Mate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L9/12F16L11/06F16L11/12B32B27/32B29C47/06
CPCB29C48/18B32B27/32F16L9/121F16L11/06F16L11/12
Inventor 石文建杨再祥吴毅雷勇魏喜苹
Owner GUIZHOU LANTU NEW MATERIALS