Method for preparing novel plasticizer by using waste polyurethane

A polyurethane and plasticizer technology, applied in the field of preparing high molecular weight plasticizers from waste polyurethane, can solve the problems of high hydrolysis conditions and equipment requirements, not being widely used, and difficult disposal of three wastes, etc., achieving significant social Benefits and economic benefits, realize the effect of high efficiency of waste utilization and recycling

Inactive Publication Date: 2014-11-19
青岛三瑞节能环保技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydrolysis method is carried out under high temperature and high pressure, the hydrolysis conditions and equipment requirements are very high, the product purity is low, and it has not been widely used; the alcoholysis method and the aminolysis method have been studied more, but the recovery rate is low, the separation is difficult, the product performance is poor, and new wastes are produced. difficult to handle

Method used

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  • Method for preparing novel plasticizer by using waste polyurethane
  • Method for preparing novel plasticizer by using waste polyurethane
  • Method for preparing novel plasticizer by using waste polyurethane

Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0012] A kind of method utilizing waste polyurethane to prepare novel plasticizer, comprises the following sequential steps:

[0013] (1) Weigh 100 parts of crushed waste polyurethane hard (soft) foam, 15 parts of dimethylethanolamine, and 0.1 part of potassium hydroxide (KOH);

[0014] (2) In the degradation reactor, the temperature is 100-190°C and the pressure is 0.1 MPa. After the degradation reaction for 30 minutes, some degradation products are released by filtration;

[0015] (3) After step (2), put in the crushed waste polyurethane hard (soft) foam, and filter to release some degradation products;

[0016] (4) Ingredients according to the basic formula: nitrile rubber (NBR-41) 100, accelerator CZ 1.2, zinc oxide (ZnO) 5, stearic acid (SA) 2, anti-aging agent (RD) 1, accelerator TMTD 0.5 , carbon black 30, sulfur (S) 1.5;

[0017] (5) Add the degradation product in (3) to the compound rubber in (4) and mix for 4-8 minutes, add accelerators TMTD and S after mixing even...

specific Embodiment approach 2

[0024] A kind of method utilizing waste polyurethane to prepare novel plasticizer, comprises the following sequential steps:

[0025] (1) Take by weighing 100 parts of waste polyurethane elastomers of pulverization respectively, 15 parts of copolyether glycols, 0.1 part of dibutyltin dilaurate;

[0026] (2) In the degradation reactor, the temperature is 140-240 °C, the pressure is 0.1 MPa, after the degradation reaction for 30 minutes, filter and release part of the degradation products;

[0027] (3) After step (2), put in the pulverized waste polyurethane elastomer while filtering to release some degradation products;

[0028] (4) Ingredients according to the basic formula: nitrile rubber (NBR-41) 100, accelerator CZ 1.2, zinc oxide (ZnO) 5, stearic acid (SA) 2, anti-aging agent (RD) 1, accelerator TMTD 0.5 , carbon black 30, sulfur (S) 1.5;

[0029] (5) Add the degradation product in (3) to the rubber compound in (4) and mix for 4-8 minutes, add accelerators TMTD and S aft...

specific Embodiment approach 3

[0037] A kind of method utilizing waste polyurethane to prepare novel plasticizer, comprises the following sequential steps:

[0038] (1) Take by weighing 100 parts of waste polyurethane fibers of pulverization, 15 parts of triethylenetetramine, and 0.1 part of sodium methoxide;

[0039] (2) In the degradation reactor, under the conditions of temperature 120-200 ° C and pressure 0.1 MPa, after 30 minutes of degradation reaction, filter and release part of the degradation products;

[0040] (3) After step (2), put in the pulverized waste polyurethane fiber, and filter to release some degradation products;

[0041] (4) Ingredients according to the basic formula: PVC (polyvinyl chloride), 100; DOP, 40; tri-salt, 1.5; di-salt, 1.0; zinc stearate, 1; stearic acid, 0.5; paraffin 0.5;

[0042] (5) Add the degradation product in (3) to the mixing material in (4) and knead for 4 minutes at a temperature of 150°C. After kneading evenly, the next piece is ready for use;

[0043] (6) On...

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Abstract

The invention provides a method for preparing novel plasticizer by using waste polyurethane. The method comprises the following orders and steps: (1) the waste polyurethane is crushed and put in a degradation reaction kettle, and degradation agents and catalysts are added; (2) in a stage of high temperature degradation, a high polymer is turned into an oligomer, mainly, the cross bonds and a part of main chains of the waste polyurethane are controlled to be cracked, so that discharging can be performed, the obtained novel plasticizer is a high molecular weight plasticizer which has the advantages that the novel plasticizer does not volatilize, does not migrate, does not reduce the intensity of plasticized materials basically and has low cost, wastes are converted into useful materials, and new pollution is not generated; (3) a degradation reaction is performed once again without additionally adding the degradation agents, degraded products can be used, and the production cost is reduced.

Description

technical field [0001] The invention relates to a method for preparing a novel plasticizer by using waste polyurethane, in particular to a method for preparing a high molecular weight plasticizer by using waste polyurethane. Background technique [0002] Polyurethane is one of the most widely used polymers in today's society after polyethylene, polypropylene, polyvinyl chloride, polystyrene, and phenolic plastics. The annual output of polyurethane in 2000 has exceeded 8.6 million tons, which is astonishing if the scrap rate is 1%. Therefore, it is urgent to recycle waste polyurethane materials to reduce the discharge of solid waste. [0003] At present, incineration, landfill and degradation of recycled monomer technologies are mainly used for waste polyurethane materials. The incineration process will produce a large amount of thick smoke and very pungent smell, which will cause serious secondary pollution to the atmospheric environment; landfill will destroy the soil, oc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/24C08J11/28C08L75/04C08L9/02C08L27/06
CPCY02W30/62
Inventor 叶林忠王万玲朱峰马艺心王丽丽张青张震
Owner 青岛三瑞节能环保技术有限公司
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