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Recycling and reusing technique for polyurethane composite waste

A polyurethane and reuse technology is applied in the field of recycling and reuse of polyurethane composite waste, which can solve the problems of waste of available resources and secondary pollution, and achieve the effects of not easy secondary pollution, environmental protection and production cost reduction.

Inactive Publication Date: 2017-01-25
李芳
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  • Abstract
  • Description
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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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Embodiment Construction

[0013] Below the present invention will be further described in conjunction with embodiment:

[0014] 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-550:1 1% by weight, take ethylene bis stearyl EBS lubricating aid: 6% by weight to uniformly mix as 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 transfer time at 60s. Before material transfer, use methyl silicone oil release agent to evenly distribute in the mold to make demoulding easy without damagi...

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Abstract

The invention relates to a recycling and reusing technique for a polyurethane composite waste, wherein the polyurethane composite waste is crushed, pure polypropylene, a coupling agent and an assistant are added and mixed evenly to prepare a mixture, the mixture is heated, the heat is preserved until the mixture is at a molten state, the molten mixture is added into a mold to implement mold pressing, and a finished product is obtained after cooling and demolding. The source of the composite waste leftover material is wide, the production process is simple, no secondary pollution is caused, the environment is protected, the waste is reused and is changed into things of value, the production cost is lowered, the economic benefit is improved, and a recycled molded product has the excellent performances of unique elasticity, wear resistance, low temperature resistance, foamability, biological aging resistance and the like, and is widely applied to industries of electromechanics, ships, aviation, vehicles, civil construction, light industry, textiles, automotive upholstery and the like.

Description

technical field [0001] The invention relates to a technology for recycling and reusing polyurethane composite waste. 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 of polyurethane waste at home and abroad, but there is no simple and single sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L75/04C08K5/544C08K5/20
CPCC08L23/12C08L2207/20C08L75/04C08K5/544C08K5/20
Inventor 不公告发明人
Owner 李芳
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