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Preparation method of modified plastic particles containing waste polyurethane

A technology of plastic granules and polyurethane, which is applied in the field of preparation of modified plastic granules, can solve the problems of low competitiveness in effect and life, poor quality of mechanical properties, etc., and achieve reasonable reuse, good surface activity, and good practical value Effect

Inactive Publication Date: 2019-11-22
蚌埠星烁新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned methods have made good use of polyurethane and polyvinyl chloride waste, the quality of the obtained materials is poor in terms of mechanical properties, and the actual use effect and service life are not competitive, and further improvement is urgently needed.

Method used

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  • Preparation method of modified plastic particles containing waste polyurethane

Examples

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Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method of modified plastic particles containing waste polyurethane, comprising the steps of:

[0028] (1) First put the carbon nanotubes into the phosphoric acid solution, keep stirring for 4 minutes, then filter out, rinse with deionized water and then put them into the silane coupling agent, filter out after ultrasonic treatment for 20 minutes, and finally put them into After drying in the drying box for 10 minutes, it is ready for use;

[0029] (2) Put the carbon nanotubes treated in step (1) into the ethanol solution, ultrasonically disperse evenly, then drop in tetraethyl orthosilicate at a rate of 3ml / min, and keep stirring until uniform to obtain the mixed solution A for later use;

[0030] (3) Add ammonia solution dropwise to the mixture A prepared in step (2) at a rate of 1ml / min, continuously stir and react for 3 hours, then carry out centrifugal filtration, then wash and dry the centrifuged solids to obtain mixture B for later use ;

[0031] (...

Embodiment 2

[0043] A preparation method of modified plastic particles containing waste polyurethane, comprising the steps of:

[0044] (1) First put the carbon nanotubes into the phosphoric acid solution, keep stirring for 5 minutes, then filter out, wash it with deionized water, put it into the silane coupling agent, and filter it out after ultrasonic treatment for 23 minutes, and finally put it into After drying in the drying box for 12 minutes, it is ready for use;

[0045] (2) Put the carbon nanotubes treated in step (1) into the ethanol solution, ultrasonically disperse evenly, then drop in tetraethyl orthosilicate at a rate of 3.5ml / min, and stir continuously until it is uniform to obtain the mixed solution A for later use ;

[0046] (3) Add ammonia solution dropwise to the mixture A prepared in step (2) at a rate of 1.3ml / min, continuously stir and react for 3.6h, then carry out centrifugal filtration, then wash and dry the centrifuged solids to obtain the mixture B standby;

[...

Embodiment 3

[0059] A preparation method of modified plastic particles containing waste polyurethane, comprising the steps of:

[0060] (1) First put the carbon nanotubes into the phosphoric acid solution, keep stirring for 6 minutes, then filter out, rinse with deionized water, put them into the silane coupling agent, filter out after ultrasonic treatment for 25 minutes, and finally put them into After drying in the drying box for 15 minutes, it is ready for use;

[0061] (2) Put the carbon nanotubes treated in step (1) into the ethanol solution, ultrasonically disperse evenly, then drop in tetraethyl orthosilicate at a rate of 4ml / min, and keep stirring until uniform to obtain the mixed solution A for later use;

[0062] (3) Drop ammonia solution into the mixture A prepared in step (2) at a rate of 1.5ml / min, continuously stir and react for 4 hours, then perform centrifugal filtration, then wash and dry the centrifuged solids to obtain mixture B spare;

[0063] (4) Weigh the following ...

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Abstract

The invention discloses a preparation method of the modified plastic particles containing waste polyurethane. The preparation method comprises the following steps of (1) carrying out surface treatmenton the carbon nanotubes; (2) preparing a mixed solution A; (3) preparing a mixture B; (4) weighing the raw materials; (5) preparing a premix C; (6) preparing a mixed material D; and (7) preparing thefinished product modified plastic particles. According to the method, the reasonable reutilization of the polyurethane waste material is well achieved, meanwhile, the quality of the PVC waste material and the polyurethane waste material composite plastic is improved, the environment-friendly effect is good, the environmental protection is improved, and the prepared modified plastic particles aregood in mechanical quality and high in comprehensive performance, and are high-temperature and aging-resistant.

Description

technical field [0001] The invention belongs to the technical field of plastic processing and recycling, and in particular relates to a preparation method of modified plastic particles containing waste polyurethane. Background technique [0002] Polyurethane is used more and more widely in social life, and the recycling and reuse of its waste is also increasingly valued by people. At present, there are three main methods for the recycling of polyurethane (PU) waste: physical method, energy method, and chemical method. The physical method means that after the polyurethane (PU) waste is roughly crushed, an adhesive is added to make a resistant product. The performance of the recycled polyurethane product produced by this method is poor, and it is only suitable for low-grade products; the energy method will cause secondary pollution, basically no Reuse; the chemical method is cumbersome, inefficient and uneconomical. Therefore, the current polyurethane (PU) waste recycling ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L75/04C08K13/06C08K9/06C08K9/02C08K7/26C08K7/24C08K5/098C08K3/26C08K5/053C08K5/12C08K5/134
CPCC08K2003/265C08K2201/011C08L27/06C08L2201/08C08L75/04C08K13/06C08K9/06C08K9/02C08K7/26C08K3/041C08K5/098C08K3/26C08K5/053C08K5/12C08K5/1345
Inventor 郭艳
Owner 蚌埠星烁新材料科技有限公司
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