Composite board produced with waste and old plastic and industrial gypsum, and producing method thereof

A technology of waste plastics and industrial gypsum, which is applied in the field of building templates and composite panels to achieve the effects of low production cost, easy demoulding, and light weight

Inactive Publication Date: 2009-05-13
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, when pouring concrete in construction projects, a large number of wooden building formwork or steel building formwork needs to be used, and the cost of formwork engineering generally accounts for 20-30% of the cost of reinforced concrete structures.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1. Composite boards are made in the following steps.

[0016] a. Classify and crush 350kg of waste polypropylene plastics, 200kg of waste polyethylene plastics, 100kg of waste polystyrene plastics and 70kg of waste polyvinyl chloride plastics to 25mm and mix them with 250kg of industrial gypsum to obtain product A;

[0017] b. After heating product A to 200°C, the finished product can be obtained through conventional calendering process.

[0018] The above-mentioned waste polypropylene plastics are polypropylene products discarded by industrial production and human life, such as medical appliances, fishing nets, woven bags, disposable water cups, polypropylene pipes and profiles, battery cases, etc.; waste and old polyethylene plastics are industrial production and human life. Polyethylene products discarded by life, such as agricultural film, toy packaging, food bags, garbage bags, polyethylene pipes and profiles, etc.; waste polystyrene plastics are polystyre...

Embodiment 2

[0019] Example 2. Composite boards are made in the following steps.

[0020] a. Classify and crush 450kg of waste polypropylene plastics, 200kg of waste and old polyethylene plastics, and 150kg of waste and old polystyrene plastics to 20mm and mix them with 400kg of industrial gypsum to obtain product A;

[0021] b. Put product A into the mold, heat it to 240°C and die-cast it to make the finished product.

[0022] The above-mentioned waste polypropylene plastics are polypropylene products discarded by industrial production and human life, such as medical appliances, fishing nets, woven bags, disposable water cups, polypropylene pipes and profiles, battery cases, etc.; waste and old polyethylene plastics are industrial production and human life. Polyethylene products discarded by life, such as agricultural film, toy packaging, food bags, garbage bags, polyethylene pipes and profiles, etc.; waste polystyrene plastics are polystyrene products discarded by industrial production ...

Embodiment 3

[0023] Example 3. Composite boards are made in the following steps.

[0024] a. Classify and crush 500kg of waste polypropylene plastics, 250kg of waste and old polyethylene plastics, and 50kg of waste and old polyvinyl chloride plastics to 15mm and mix them with 450kg of industrial gypsum to obtain product A;

[0025] b. Put product A into the mold, heat it to 240°C and die-cast it to make the finished product.

[0026] The above-mentioned waste polypropylene plastics are polypropylene products discarded by industrial production and human life, such as medical appliances, fishing nets, woven bags, disposable water cups, polypropylene pipes and profiles, battery cases, etc.; waste and old polyethylene plastics are industrial production and human life. Polyethylene products discarded by life, such as agricultural film, toy packaging, food bags, garbage bags, polyethylene pipes and profiles, etc.; waste PVC plastics are hard or soft PVC products discarded by industrial producti...

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PUM

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Abstract

The invention discloses a composite board produced by waste plastics and industrial gypsum and a production method thereof. The composite board is prepared by the waste plastics and the industrial gypsum according to certain weight ratio. The invention adopts waste plastics such as waste polypropylene plastic, waste polyethylene plastic, waste polystyrene plastic, waste polyvinyl chloride plastic and so on discarded by industrial production and human life and the industrial gypsum as main raw materials to produce the composite board through the crushing and hot pressing, the composite board achieves the standard of the national building formwork, reduces the pollution of the industrial gypsum and plastic wastes to the environment, can also be used to substitute a wood building formwork or a steel building formwork which is widely used for the prior building construction, has low production cost, light weight, high strength, shock resistance, and easy mold stripping, can turn the harmful into the beneficial and turn waste into valuables, and greatly accelerate the progress of waste resource recovery in our country.

Description

technical field [0001] The invention relates to a building template used in pouring concrete and a production method thereof, in particular to a composite board made of waste plastics and industrial gypsum and a production method thereof, belonging to the field of building materials. Background technique [0002] At present, the discharge of industrial gypsum in my country is increasing year by year. In addition to some of these industrial gypsum being used to produce industrial gypsum bricks, gypsum boards, and compound fertilizers, there are also many ash storage yards piled up in industrial gypsum, which not only encroached on the land, It will also cause serious environmental pollution. Moreover, with the increasing production capacity and consumption of plastic materials in my country, the output of plastic waste formed by discarded plastics is increasing, causing serious "white pollution". On the other hand, when pouring concrete in construction projects, a large numbe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B18/20
CPCC04B28/144C04B28/142C04B2111/40Y02W30/91C04B18/20C04B20/0076C04B20/026C04B40/0071C04B40/0082
Inventor 陈前林刘彤曾光杨光君
Owner GUIZHOU UNIV
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