Method for recycling waste hard foam polyurethane plastic

A technology of rigid polyurethane and foamed plastics, which is applied in the field of waste rigid foamed plastics, can solve problems such as waste of materials and environmental pollution, and achieve the effect of simple process and low cost.

Inactive Publication Date: 2008-01-02
林永飞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Waste rigid foam plastics produced in industrial production are generally disposed of by incineration, which not only wastes materials, but also causes environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] A method for recycling waste rigid polyurethane foam, comprising the following steps in sequence:

[0013] (1) Waste rigid polyurethane foam is dropped into the crusher and is pulverized into powdery foam particles;

[0014] (2) Use a 100-150 mesh sieve to separate and remove impurities for powdery foam particles;

[0015] (3) The foam particles after removing the foam particles are mixed and foamed with the polyether polyol (material A) and the isocyanate (B) material to obtain a finished foam plastic. Among them, the combined polyether polyol (A material) and isocyanate (B) materials are commercially available conventional materials for manufacturing foam plastics (produced by Jiangsu Luyuan New Material Co., Ltd., Shunde Rongwei Synthetic Material Co., Ltd., and Langteng Polyurethane Co., Ltd.),

[0016] The amount of foam particles in step (3) accounts for 10% to 30% (eg 10%, 20%, 30%) of the total amount of foam particles, combined polyether polyol (A material) an...

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PUM

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Abstract

The invention discloses a recycling using method of waste hard polyurethane foam plastic, which comprises the following steps: putting the waste hard polyurethane foam plastic into breaker to form powder foam particle; separating to remove impurity from powder foam particle; blending the foam particle and combined polyether polyol (material A)and isocyanate (material B)to foam; obtaining the product.

Description

Technical field: [0001] The invention relates to a method for utilizing waste rigid foam plastics. Background technique: [0002] The waste rigid foam produced in industrial production is generally disposed of by incineration, which not only wastes materials, but also causes environmental pollution. Invention content: [0003] The object of the present invention is to provide a recycling method for waste rigid polyurethane foam plastics which can be used as waste and is environmentally friendly. [0004] Technical solution of the present invention is: [0005] A method for recycling waste rigid polyurethane foam plastics is characterized in that it comprises the following steps in sequence: [0006] (1) Waste rigid polyurethane foam is dropped into the crusher and is pulverized into powdery foam particles; [0007] (2) Powdery foam particles are separated to remove impurities; [0008] (3) The foam particles after removing the foam particles are mixed and foamed with t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/33C08L75/08
Inventor 林永飞
Owner 林永飞
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