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Method for utilizing waste HDPE plastic to prepare large-caliber double-wall bellow

A double-wall corrugated pipe and large-diameter technology is applied in the field of preparing large-diameter double-wall corrugated pipes by using waste HDPE plastics, which can solve the problems that waste plastics cannot be effectively recycled, pollute the environment, waste energy, etc., and achieve improved mechanical strength. The effect of reducing equipment investment and energy consumption, and reducing the weight of products

Inactive Publication Date: 2009-10-07
江苏和远电力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, large-diameter double-wall corrugated pipes are all produced by HDPE new resin, which is costly; moreover, waste plastics cannot be recycled effectively, which wastes energy and pollutes the environment at the same time.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 50kg of waste HDPE plastic; 35kg of modified masterbatch containing POE elastic material; 3kg of color masterbatch; 12kg of whisker reinforcing material; the composition weight ratio is 1:0.7:0.06:0.24.

[0022] The relevant parameters of the above materials are as follows:

[0023] Waste HDPE plastic melt index 0.6g / 10min (5kg, 190℃), elastic modulus ≥ 800MPa, tensile strength ≥ 20MPa;

[0024] The modified masterbatch containing POE elastic material has a melting index of 0.4g / 10min (5kg, 190°C), elastic modulus ≥ 1000MPa, and tensile strength ≥ 25MPa;

[0025] Whisker reinforcement has a melt index of 0.5g / 10min (25kg, 190°C), an elastic modulus ≥ 1500MPa, and a solid content < 70%.

[0026] The components are fully mixed evenly, plasticized and extruded at high temperature, cut and stacked according to a certain length after water or air cooling, and put into storage after passing the inspection.

Embodiment 2

[0028] 60kg of waste HDPE plastic; 25kg of modified masterbatch containing POE elastic material; 3kg of color masterbatch; 12kg of whisker reinforcing material; the composition weight ratio is 1:0.42:0.05:0.2.

[0029] Its material parameter and preparation method are identical with embodiment 1.

[0030] On the one hand, the present invention strengthens and toughens waste high-density polyethylene through the functional masterbatch to improve its mechanical properties; Rigidity, so as to use waste high-density polyethylene to produce large-diameter double-wall corrugated pipes with high ring stiffness, high toughness, corrosion resistance, and long service life. The products can be used in environmental treatment sewage projects, municipal water supply and drainage, etc. The goals of renewable resource utilization and energy conservation and emission reduction are in line with national industrial policies.

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Abstract

The invention discloses a method for utilizing waste HDPE plastic to prepare a large-caliber double-wall bellow, essentially comprising the following steps of: using waste high-density polyethylene (HDPE) to prepare a double-wall bellow with the caliber of 1200mm; carrying out cooperative combination to strip, fibrous and spherical fillers; adopting novel elastomer as basic resin; preparing modified master batch which has functions of reinforcing and toughening to the waste HDPE; and using the functional master batch to carry out modification to the waste HDPE so as to lead the mechanical performance thereof to reach the level of new resin of HDPE; and an extrusion mould of the large-caliber double-wall bellow adopts arc structure at peak part, thus improving the ring stiffness of the product and leading the product parameters to meet standard requirements.

Description

technical field [0001] The invention relates to a method for preparing a large-diameter double-wall corrugated pipe, in particular to a method for preparing a large-diameter double-wall corrugated pipe by using waste HDPE plastics. Background technique [0002] With the continuous and rapid development of China's national economy, the scale of municipal construction is also expanding. Drainage and sewage pipes are an important part of the municipal pipe network system, and their performance will directly affect the reliability and safety of the sewage discharge system. It is the general trend to eliminate concrete pipes, cast iron pipes, ceramic fired pipes, etc. Developed countries have legally banned the use of these seriously polluting pipes, and China will also be in line with international standards. Use concrete pipes. Relying on its own unique advantages, high-density polyethylene (HDPE) double-wall corrugated pipes have occupied an increasing market share in draina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B17/00
CPCY02W30/62
Inventor 张兴兵丁永红苏中悦陈凯
Owner 江苏和远电力科技有限公司
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