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Manufacturing method of recycled plastic composite manhole cover

A technology of recycled plastics and manufacturing methods, applied in artificial islands, underwater structures, buildings, etc., can solve the problems of waste plastics, fly ash and waste pollution of electronic products, etc., to enhance strength and toughness, reduce cost and strength. and toughness-enhancing effects

Inactive Publication Date: 2013-01-23
GEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned problems of existing manhole covers and the pollution problems of waste plastics, fly ash and electronic product waste, the present invention provides a method with excellent performance and low cost for producing composite manhole covers using waste plastics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take the waste circuit board and remove the tin to realize the separation of the substrate and the components, and then the substrate is crushed-magnetic separation-eddy current separation-electrostatic separation to obtain VT powder completely separated from the metal;

[0017] Put the waste plastic into the crusher to crush, the waste plastic fragments, VT powder, fly ash and related additives are mixed, stirred and then granulated;

[0018] The composite manhole cover is prepared by molding the composite particles, injection molding, and calendering.

[0019] The waste plastics can be polyolefin waste plastics.

[0020] The processing aid can be a flame retardant and an anti-aging agent, and the flame retardant is antimony trioxide. It can also be one or a mixture of tetraphenyl (bisphenol-A) diphosphate, resorcinol bis(diphenyl) phosphate, ammonium polyphosphate, and triphenyl phosphate. Choose 2,2'-methylene-bis(4-methyl-6-tert-butylphenol) as aging agent, and also can ch...

Embodiment 2

[0022] After removing the tin, take the waste circuit board to realize the separation of the substrate and the components, and then the substrate is crushed-magnetic separation-eddy current separation-electrostatic separation to completely separate the metal to obtain VT powder;

[0023] Take the raw materials, and the mass percentages of the components in the raw materials are as follows: waste plastic 85%-95%, VT powder 0.5%-10%, fly ash 3%-10%, processing aid 0.1%-1%;

[0024] Put the waste plastic into the crusher to crush, the waste plastic fragments, VT powder, fly ash and related additives are mixed, stirred and then granulated;

[0025] The composite manhole cover is prepared by molding the composite particles, injection molding, and calendering.

Embodiment 3

[0027] After removing the tin, take the waste circuit board to realize the separation of the substrate and the components, and then the substrate is crushed-magnetic separation-eddy current separation-electrostatic separation to completely separate the metal to obtain VT powder;

[0028] Take the raw materials, and the mass percentages of the components in the raw materials are as follows: 85% waste plastic, 10% VT powder, 4% fly ash, and 1% processing aid;

[0029] Put the waste plastic into the crusher to crush, the waste plastic fragments, VT powder, fly ash and related additives are mixed, stirred and then granulated;

[0030] The composite manhole cover is made by molding the composite particles.

[0031] The waste plastics can be polyolefin waste plastics.

[0032] The processing aid uses a flame retardant and an anti-aging agent, the flame retardant is tetraphenyl (bisphenol-A) diphosphate, and the anti-aging agent is an antioxidant 168.

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PUM

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Abstract

The invention relates to an inspection manhole cover of municipal engineering, and particularly relates to a manufacturing method of a recycled plastic composite manhole cover. According to the manufacturing method of a recycled plastic composite manhole cover, raw materials including waste plastics, VT powder, coal ash and processing aids are blended and then subjected to compression molding, injection molding or calendering to obtain the recycled plastic composite manhole cover. According to the invention, the VT powder is produced from the waste circuit board of an electronic product without adding glass fiber, and an effect of enhancing strength and toughness still can be realized; and the cost is greatly lowered.

Description

Technical field [0001] The invention relates to a municipal engineering inspection well cover, in particular to a method for preparing a composite well cover by using waste plastics. Background technique [0002] Manhole covers designed for various underground municipal projects are an important part of urban infrastructure. With the rapid development of urban construction in my country, municipal facilities are also increasing day by day. Manhole covers are widely used and have many types. At present, the manhole covers widely used in the market are made of reinforced concrete and cast iron. Concrete manhole covers have defects such as high brittleness, low load-bearing capacity, and easy breakage. Cast iron manhole covers are often stolen due to their recycling value, and car crashes and deaths caused by the theft of manhole covers often occur. [0003] With the rapid development of my country's national economy, the production of plastic products and thermal power generation ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/00C08K3/22C08K5/13C08K5/523C08K3/32E02D29/14
Inventor 曹卉张翔闫梨程文武
Owner GEM CO LTD
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