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Multi-functional polyethylene tube and manufacturing method thereof

A polyethylene pipe, multi-functional technology, applied in the direction of pipes, rigid pipes, pipes/pipe joints/fittings, etc., can solve the problems of not being exposed to the sun and rain for a long time, high requirements for stacking PE pipes, unsuitable for laying and construction, etc. Achieve the effect of miniaturizing grain size, shortening molding cycle and moderate price

Active Publication Date: 2011-02-16
JIANGSU BAIANJU PLASTIC PIPE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the characteristics of the PE pipe material itself, PE pipes also have certain weaknesses, such as low strength, bumping into rocks, metal collision and extrusion, easy to cause pits, until perforation; no flame retardancy; In the northern part of my country, when laying polyethylene buried in the field for water supply in winter, it is concluded that it is not suitable for laying construction below zero, because polyethylene pipes are easy to be brittle; in addition, PE pipes have high requirements for stacking and cannot Expose to the sun and rain for a long time, otherwise it will easily age and reduce the service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The formula is: 70 parts of high-density polyethylene (HDPE), 70 parts of ultra-high molecular weight polyethylene (UHMWPE), 10 parts of polyoctene rubber (TOR), 1 part of dicumyl peroxide (DCP), nanometer rare earth β crystal 1.5 parts of nucleating agent, 3 parts of silicone polymer flame retardant, 3 parts of color masterbatch, and produce sample tubes according to the above-mentioned manufacturing method. After testing the sample tube, the low temperature brittleness temperature 2 , oxygen index 85%, self-extinguishing time 1S, surface resistivity 1.8×10 9 Ω, coefficient of friction 0.04, mortar wear rate 0.1%, longitudinal retraction rate 1%, hydrostatic test and thermal stability test under hydrostatic state no leakage, no rupture, the pipe conforms to "drinking water transmission and distribution equipment and protection Material Safety Evaluation Criteria.

Embodiment 2

[0050] The formula is: 40 parts of high-density polyethylene (HDPE), 90 parts of ultra-high molecular weight polyethylene (UHMWPE), 15 parts of polyoctene rubber (TOR), 1.5 parts of dicumyl peroxide (DCP), nanometer rare earth β crystal 2 parts of nucleating agent, 5 parts of silicone polymer flame retardant, 5 parts of color masterbatch, and produce sample tubes according to the above-mentioned manufacturing method. After testing the sample tube, the low temperature brittleness temperature 2 , oxygen index 88%, self-extinguishing time 1S, surface resistivity 1.8×10 9 Ω, friction coefficient 0.02, mortar wear rate 0.05%, longitudinal retraction rate 1.6%, hydrostatic test and thermal stability test under hydrostatic state, no leakage, no cracks, pipes comply with "Drinking Water Transmission and Distribution Equipment and Protection Material Safety Evaluation Criteria.

Embodiment 3

[0052] The formula is: 30 parts of high-density polyethylene (HDPE), 80 parts of ultra-high molecular weight polyethylene (UHMWPE), 10 parts of polyoctene rubber (TOR), 1 part of dicumyl peroxide (DCP), nanometer rare earth β crystal 1.5 parts of nucleating agent, 3 parts of silicone polymer flame retardant, 3 parts of color masterbatch, and produce sample tubes according to the above-mentioned manufacturing method. After testing the sample tube, the low temperature brittleness temperature 2 , oxygen index 85%, self-extinguishing time 1S, surface resistivity 1.8×10 9 Ω, friction coefficient 0.03, mortar wear rate 0.08%, longitudinal retraction rate 1.2%, hydrostatic test and thermal stability test under hydrostatic state, no leakage, no cracks, pipes comply with "Drinking Water Transmission and Distribution Equipment and Protection Material Safety Evaluation Criteria.

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Abstract

The invention discloses a multi-functional polyethylene tube and a manufacturing method thereof, belonging to a polymer composite material. The multi-functional polyethylene tube is prepared by blending and modifying the following raw materials in parts by mass: 30-50 parts of high-density polyethylene (HDPE), 70-90 parts of ultrahigh molecular weight polyethylene (UHMWPE), 10-15 parts of polyoctene rubber (TOR), 1.5-2.0 parts of nano rare earth beta-nucleating agent, 1.0-1.5 parts of dicumyl peroxide (DCP), 3-5 parts of silicone polymer flame retardant and 3-5 parts of color masterbatch. The invention has the advantage that the problems of low-temperature brittleness, abrasive resistance, corrosion resistance, ageing resistance, heat resistance, processability, flame retardancy, and the like of the polyethylene tube are solved. The invention can be widely applied to the fields of water supply and drainage, sewage discharge, oil gas, coal power, mining industry, gas supply, heating, chemical industry, power communication, ocean, dredging, and the like.

Description

technical field [0001] The invention belongs to novel multifunctional polymer composite materials, in particular to a multifunctional polyethylene pipe and a manufacturing method thereof. Background technique [0002] In 1933, the British ICI company first discovered PE. Developed countries in the world have started to study polyethylene pipes since the late 1940s, and applied them to water supply and drainage and gas projects. Since the 1960s, polyethylene pipes have been used in water supply and distribution systems, drainage and gas transmission and distribution systems, and The proportion of use is gradually expanded. For example, the use of polyethylene pipes in the UK took 1968 when it was applied to natural gas transmission as a turning point, and the use increased sharply. Among the main and branch pipelines buried in 1979, polyethylene pipes accounted for 80%, and the gas pipelines buried in the United States in 1983 accounted for 88.6%. % is PE pipe, and now deve...

Claims

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Application Information

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IPC IPC(8): C08K5/14C08L23/06C08L83/04C08L23/20F16L9/12
Inventor 程全山岳喜东
Owner JIANGSU BAIANJU PLASTIC PIPE IND CO LTD
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