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Recovery and shaping technology of polyurethane composite waste material

A molding process and polyurethane technology are applied in the field of recycling and reuse of scraps of automobile interior parts, which can solve the problems of secondary pollution and waste of available resources, and achieve the effects of protecting the environment, preventing secondary pollution and improving economic benefits.

Inactive Publication Date: 2005-08-10
WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, most of these wastes can only be incinerated, which not only causes secondary pollution but also wastes available resources

Method used

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  • Recovery and shaping technology of polyurethane composite waste material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] In the embodiment of the present invention, take the polyurethane composite scrap of punching and trimming of automotive interior parts as: 33% by weight, pulverize the polyurethane composite scrap with a diameter of 1 mm and add it to the heating mixer in the form of filler, and then add thermoplastic material pure polymer Propylene 48% by weight, the coupling agent is silane coupling agent KH-550, the chemical name is: -glycidyl etheroxypropyl trimethoxysilane: 12% by weight, ethylene bis stearyl EBS lubricating aid is: 7% by weight, uniformly mixed into a mixture; then put the above mixture in a heating container for heating, the heating temperature is: 185 ° C, keep warm for 9 minutes until the mixture enters a molten state, and then move the molten mixture into a mold for Molding, the material transfer time is controlled within 50s, and the material should be transferred quickly to ensure the performance and appearance of the product. In order to prevent the molded...

Embodiment 2

[0020] In the embodiment of the present invention, the polyurethane composite waste material of punching and cutting edge of automobile interior parts is taken as: 41.5% by weight, and the pulverized polyurethane composite waste material is 1.5 mm in length and added in the heating mixer in the form of filler, and then pure polypropylene 42 % by weight, take silane coupling agent KH-550: 11% by weight, take ethylene bisstearyl EBS lubricating aid: 6% by weight and uniformly mix it into a mixture; then put the above mixture in a heating container Heating, the heating temperature is: 190°C, keep warm for 9.5 minutes until the mixture enters the molten state, then move the molten mixture into the mold for pressurization, and control the material transfer time at 60s. Before material transfer, use methyl silicone oil release agent to evenly distribute in the mold to make demoulding easy without damaging the mold. The molten mixture is held in the mold for 4 minutes, the mold press...

Embodiment 3

[0022] In the embodiment of the present invention, the polyurethane composite waste material of punching and cutting edge of automobile interior parts is taken as: 50% by weight, and the polyurethane composite waste material is pulverized into a diameter of 2 mm particles and added in the mixer in the form of filler, and then pure polypropylene is added in the mixer 35% by weight, take silane coupling agent KH-550: 10% by weight and select ethylene bis stearyl EBS lubricating aid: 6% by weight, and uniformly mix it into a mixture; then the above mixture is heated, heated The temperature is: 195°C, keep warm for 10 minutes until the mixture enters the molten state, then move the molten mixture into the mold for molding, and the transfer time is controlled at 70s. Before material transfer, use methyl silicone oil release agent to evenly distribute in the mold. The molten mixture is held in the mold for 5 minutes, the pressure is: 1.6MPa, the cooling temperature is below 70°C and...

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Abstract

A process for reclaiming the rejected polyurethane composition, especially the leftover of internal decoration for car, includes such steps as pulverizing, adding polypropene, coupling agent and assistant, stirring, heating until the mixture is fused, loading it in mould, cooling and demoulding.

Description

technical field [0001] The invention relates to a recovery and molding process of polyurethane composite waste, in particular to the recovery and reuse of leftovers of automotive interior parts. Background technique [0002] Polyurethane (PU) is a kind of thermosetting plastic commonly used in the industry. It is made of polyisocyanate and polyhydroxy compound or polymer as raw materials, and the product is made by mixing reaction. According to the requirements of use, the required products can be synthesized by changing the specifications, varieties and formulas of raw materials. It is precisely because of its excellent performance and wide application fields that the polyurethane industry has developed rapidly. The consumption of polyurethane in the world is basically doubling every ten years, which creates a problem that a large amount of polyurethane waste urgently needs to be recycled. [0003] At present, there has been some research on the recycling and utilization o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/06C08L23/12C08L75/04
CPCY02W30/62
Inventor 姚正军吴晓波陈江彪
Owner WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD
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