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Non-degradable industrial polyurethane product leftover recycling method, and regenerated product thereof

A technology of polyurethane and leftovers, which is applied in the field of recycling methods and recycled products of refractory industrial polyurethane product leftovers, to achieve the effects of reduced production costs, high hardness, and safe methods

Active Publication Date: 2017-11-24
唐山意美科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, some reprocessed products of industrial polyurethane products have appeared on the market, such as recycled sponge products, but because the recycled sponge is a reprocessed product, most of them have lost the characteristics of good elasticity and no deformation of the sponge.

Method used

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  • Non-degradable industrial polyurethane product leftover recycling method, and regenerated product thereof
  • Non-degradable industrial polyurethane product leftover recycling method, and regenerated product thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0093] A method for recycling refractory industrial polyurethane product leftovers, comprising the following steps:

[0094] (a) Recycling and screening: recycling industrial polyurethane product waste, removing impurities such as cloth ends, thread ends, and plastics;

[0095] (b) crushing: crushing the leftovers to particles with a particle diameter of 0.3mm;

[0096] (c) Reaction: weigh 100kg of pulverized leftovers, put them into a reactor, add 15kg of crosslinking agent, 0.25kg of tin catalyst and 2.5kg of water, mix and stir for 10min at a stirring speed of 80r / min;

[0097] (d) Compression: put the reacted material into a mold box and press it into a box with a length of 1m, a width of 1m and a height of 1m;

[0098] (e) Fill the mold box with steam, the temperature in the mold box after inflation is 110°C, and the air pressure value is 1 atmosphere;

[0099] (f) aging in a mold box for 40 minutes to obtain a recycled product.

Embodiment 2

[0101] A method for recycling refractory industrial polyurethane product leftovers, comprising the following steps:

[0102] (a) Recycling and screening: recycling industrial polyurethane product waste, removing impurities such as cloth ends, thread ends, and plastics;

[0103] (b) crushing: the leftovers are crushed to particles with a particle diameter of 20 mm;

[0104] (c) Reaction: Weigh 100kg of pulverized leftovers, put them into a reactor, add 20kg of crosslinking agent, 0.28kg of tin catalyst and 2kg of water, mix and stir for 5min at a stirring speed of 150r / min;

[0105] (d) Compression: put the reacted material into a mold box and press it into a box with a length of 1m, a width of 1m and a height of 1m;

[0106] (e) Fill the mold box with steam, the temperature in the mold box after inflation is 150°C, and the air pressure value is 2 atmospheres;

[0107] (f) aging in a mold box for 20 minutes to obtain a recycled product.

Embodiment 3

[0109] A method for recycling refractory industrial polyurethane product leftovers, comprising the following steps:

[0110] (a) Recycling and screening: recycling industrial polyurethane product waste, removing impurities such as cloth ends, thread ends, and plastics;

[0111] (b) crushing: crushing the leftovers to particles with a particle diameter of 0.5 mm;

[0112] (c) Reaction: Weigh 100kg of pulverized leftovers, put them into a reactor, add 16kg of crosslinking agent, 0.26kg of tin catalyst and 3kg of water, and mix and stir for 7min at a stirring speed of 120r / min;

[0113] (d) Compression: put the reacted material into a mold box and press it into a box with a length of 1m, a width of 1m and a height of 0.4m;

[0114] (e) Fill the mold box with steam, the temperature in the mold box after inflation is 120°C, and the air pressure value is 2 atmospheres;

[0115] (f) aging in a mold box for 30 minutes to obtain a recycled product.

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Abstract

The invention discloses a non-degradable industrial polyurethane product leftover recycling method, and a regenerated product thereof, and relates to the technical field of polymer material recycling. The recycling method comprises the following steps: uniformly mixing crushed industrial polyurethane product leftovers, a cross-linking agent, a tin catalyst and water, pressing the obtained mixture, and carrying out steam heating curing to obtain the regenerated product. The method solves the problems of non-degradability and difficult treatment of industrial polyurethane products and overcomes the defects of poor performances, easy deformation and easy collapsing of currently produced polyurethane regenerated products. The solid granular leftovers adopted as a raw material undergo a re-crosslinking reaction under the action of the cross-linking agent, the tin catalyst and water, and the obtained reaction product is pressed and shaped to obtain the regenerated polyurethane product. The industrial polyurethane product leftovers are recycled to reduce pollution to the environment. The regenerated product obtained by the method has the advantages of high density, high hardness, and difficulty in deforming and collapsing.

Description

technical field [0001] The invention relates to the technical field of polymer material recycling, in particular to a method for recycling refractory industrial polyurethane product waste and a recycled product. Background technique [0002] For industrial polyurethane polymer material products such as sponge products, in the process of material preparation and processing of materials into furniture (such as sofa cushions, etc.), car cushions, floor mats, ironing tables, composite cotton and other products, it is inevitable , will produce a large amount of leftovers, which are generally disposed of as industrial waste. Since the industrial waste of polyurethane products is not easy to degrade, direct burial will take up a lot of space and aggravate the hazards of garbage siege; direct incineration, the smoke produced will cause great pollution to the environment. [0003] Traditional industrial polyurethane products are made of liquid raw materials, which react with foaming...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/32C08J9/08C08G101/00
CPCC08G18/3206C08G18/3228C08G18/3275C08G18/3281C08G2110/0083
Inventor 黄梨
Owner 唐山意美科技有限公司