Process for recovering polyurethane composite waste material for automobile roof liner

A polyurethane and waste technology, which is applied in the recycling process of polyurethane composite waste materials, can solve the problems of secondary pollution, waste of available resources, etc.

Active Publication Date: 2009-05-27
WUXI GISSING AUTO PARTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Until now, these wastes can only be incinerated, which not only

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] a. Pulverization: pulverize the polyurethane composite waste into particles with a diameter of about 5mm for later use;

[0026] b. Curing and molding: Add pulverized polyurethane composite waste particles, spandex liquid, foaming agent, stabilizer, diluent, flame retardant, NCA / OH regulator and catalyst into the mixer to form a mixture and stir evenly. The mixture after stirring is automatically foamed and solidified to form, and the weight percentages of each component in the mixture are controlled as follows: polyurethane composite waste accounts for 50%, spandex liquid accounts for 35%, and liquid HFC-245FA foaming agent accounts for 3%. %, Tegostab silicone stabilizer 1%, Gorapur diluent 3%, CP-2 flame retardant 2%, NCA / OH regulator 2%, A-cat amine catalyst 4%;

[0027] c. Slicing: Slicing the cured foam after curing and molding in step b into sheets of certain specifications according to the specific size;

[0028] d. Baking: heat up the plate formed in step c to...

Embodiment 2

[0034] a. Pulverization: pulverize the polyurethane composite waste into particles with a diameter of about 8mm for later use;

[0035] b. Curing and molding: Add pulverized polyurethane composite waste particles, spandex liquid, foaming agent, stabilizer, diluent, flame retardant, NCA / OH regulator and catalyst into the mixer to form a mixture and stir evenly. The mixture is automatically foamed and solidified into shape, and the weight percentages of each component in the mixture are controlled as follows: polyurethane composite waste accounts for 56%, spandex liquid accounts for 12%, liquid HFC-245FA foaming agent accounts for 4%, Tegostab Silicone stabilizer accounted for 3%, Gorapur diluent accounted for 8%, CP-2 flame retardant accounted for 4%, NCA / OH regulator accounted for 7%, A-cat amine catalyst accounted for 6%;

[0036] c. Slicing: slicing the cured foam after curing and forming in step b to form a plate;

[0037] d. Baking: heat up the plate formed in step c to 1...

Embodiment 3

[0042] a. Pulverization: pulverize the polyurethane composite waste into particles with a diameter of about 3mm for later use;

[0043] b. Curing and molding: Add pulverized polyurethane composite waste particles, spandex liquid, foaming agent, stabilizer, diluent, flame retardant, NCA / OH regulator and catalyst into the mixer to form a mixture and stir evenly. The mixture is automatically foamed and solidified into shape, and the weight percentages of each component in the mixture are controlled as follows: polyurethane composite waste accounts for 75%, spandex liquid accounts for 10%, liquid HFC-245FA foaming agent accounts for 2%, Tegostab Silicone stabilizer accounts for 1%, Gorapur diluent accounts for 3%, CP-2 flame retardant accounts for 3%, NCA / OH regulator accounts for 2%, A-cat amine catalyst accounts for 4%;

[0044] c. Slicing: slicing the cured foam after curing and forming in step b to form a plate;

[0045] d. Baking: heat up the plate formed in step c to 180°C ...

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Abstract

The invention discloses technology for recovering composite polyurethane waste materials of vehicle roof liners. The technology comprises the steps of crushing, curing molding, slicing, roasting, die stamping, cooling and so on. Products which are recovered and formed by the method have superior properties such as unique elasticity, abrasion resistance, low temperature resistance and biological aging resistance, can be widely applied in the industries such as electromechanics, shipping, aviation, vehicle, civil construction, light industry and automobile component, particularly have the functions of heat insulation and shock absorption, are good interior trim materials of automobiles, and simultaneously can be used as bumpers of the automobiles due to superhigh elasticity of the products. Moreover, the shock resistance of the products far exceeds that of pp materials, and the products are suitable to be roof liner materials which have high requirement on sound absorption due to the microcellular structure and unique thermoplastic moldability of the products.

Description

technical field [0001] The invention discloses a process for recycling polyurethane composite waste materials of automobile roof linings. Background technique [0002] There are two ways to control the environmental pollution caused by vehicle plastic composite waste. The first is to treat it as garbage, or bury it, or incinerate it. Disposal by landfill method, its components including glass fiber, polyester and other materials will not degrade for a long time, and will occupy a large amount of land. The shortage of land for landfill is already a serious problem in most cities; disposal by incineration method will easily cause serious secondary damage. pollute. The second governance method is recycling. In general, plastics can be recycled. The methods of recycling include physical method, chemical method and energy method. [0003] Polyurethane (PU) composites are the most used materials in automotive roof linings, of which more than two-thirds are foams. Waste polyur...

Claims

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Application Information

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IPC IPC(8): C08J9/33C08L75/04B29B17/04B29B13/02B29C43/58B29C43/52
CPCY02W30/62
Inventor 刘明春
Owner WUXI GISSING AUTO PARTS CO LTD
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