Method for ecological and environment-friendly recycling of rubber for preparing ultrafine rubber powder

A technology for recycling rubber and rubber powder, which is applied in the fields of plastic recycling, recycling technology, and mechanical material recycling, etc. The effect of rubber coagulation

Active Publication Date: 2018-02-16
ZHEJIANG SANMEN EASTSEA RUBBER FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The finer the rubber powder, the larger its specific surface area, and the performance of the resulting rubber product is close to that of the original rubber. However, the traditional room temperature fine rubber is only about 40 mesh, because the surface of the rubber powder will be denatured when it is overheated during the crushing process. viscous and pyrolyzed
The rubber powder prepared by liquid nitrogen deep freezing method is only 100 mesh, and the cost is high, so it is difficult to prepare in batches

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for preparing superfine rubber powder from ecologically-friendly recycled rubber, comprising the following steps:

[0027] (1) Sorting the waste tire rubber, iron traveler, debris, etc., and then crushing the rubber into rubber particles with a particle size of 15 mesh;

[0028] (2) Disperse 100 parts by weight of rubber particles, 10 parts by weight of linseed fatty acid and 5 parts by weight of sodium dodecylsulfonate in 200 parts by weight of dimethylacetamide to obtain a dispersion, and then use a particle size of 20 microns Zirconia ceramic particles grind the dispersion for 3 hours to obtain a dispersion emulsion;

[0029] (3) Send the dispersed emulsion in step (2) into a plunger-type high-pressure homogenizer, where the pressure of the high-pressure homogenizer is 100 MPa, and the materials are collided by high-pressure transportation, and then zirconia with a particle size of 20 microns is used The ceramic particles continue to grind the large particl...

Embodiment 2

[0032] A method for preparing superfine rubber powder from ecologically-friendly recycled rubber, comprising the following steps:

[0033] (1) Sorting waste tire rubber, iron traveler, debris, etc., and then crushing the rubber into rubber particles with a particle size of 20 mesh;

[0034](2) 100 parts by weight of rubber particles, 5 parts by weight of 1,4-dichloro-2,3-epoxybutane and 8 parts by weight of sodium dodecylsulfonate in 200 parts by weight of N,N-dimethyl Disperse in acetamide to obtain a dispersion, and then use zirconia ceramic particles with a particle size of 20 microns to grind the dispersion for 3 h to obtain a dispersed emulsion;

[0035] (3) Send the dispersed emulsion in step (2) into a plunger-type high-pressure homogenizer, wherein the pressure of the high-pressure homogenizer is 105MPa, and the materials are collided by high-pressure transportation, and then zirconia with a particle size of 20 microns is used The ceramic particles continue to grind t...

Embodiment 3

[0038] A method for preparing superfine rubber powder from ecologically-friendly recycled rubber, comprising the following steps:

[0039] (1) Sorting the waste tire rubber, iron traveler, debris, etc., and then crushing the rubber into rubber particles with a particle size of 10 mesh;

[0040] (2) Disperse 100 parts by weight of rubber particles, 10 parts by weight of dehydrated castor fatty acid and 15 parts by weight of sodium lauryl sulfate in 200 parts by weight of N,N-dimethylacetamide to obtain a dispersion, and then use the particle size Grinding the dispersion liquid for 50 micron zirconia ceramic particles for 2-5 hours to obtain a dispersion emulsion;

[0041] (3) Send the dispersed emulsion in step (2) into a plunger-type high-pressure homogenizer, wherein the pressure of the high-pressure homogenizer is 120MPa, and the materials are collided by high-pressure transportation, and then zirconia with a particle size of 20 microns is used The ceramic particles continu...

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Abstract

The invention relates to the technical field of rubber recycling, in particular to a method for ecological and environment-friendly recycling of rubber for preparing ultrafine rubber powder. The method for ecological and environment-friendly recycling of rubber for preparing ultrafine rubber powder comprises the following steps that firstly, waste tire rubber is sorted and pulverized; secondly, rubber particles, a chain terminator and an emulgator are scattered in an organic solvent, scattering liquid is obtained, then, grinding particles are adopted for grinding the scattering liquid, and scattering emulsion is obtained; thirdly, the scattering emulsion is sent into a plunger type high-pressure homogenizer, materials are in opposite collision through high-pressure conveying, then, the grinding particles continuously grind large-particle rubber powder into fine particles, the homogenizer further refines scattering liquid, and rubber powder emulsion is obtained; and fourthly, the rubberpowder emulsion is subjected to centrifuging and drying, and micron-order rubber powder is obtained. The large particle rubber powder is ground into the micron-order rubber powder in the solvent system, gathering of the rubber particles in the grinding process is prevented, and the size of the micron-order rubber particles is uniform.

Description

technical field [0001] The invention relates to the technical field of rubber recycling, in particular to a method for preparing superfine rubber powder from ecologically-friendly recycled rubber. Background technique [0002] my country is a country that is very scarce in rubber resources. More than 40% of domestic synthetic rubber and more than 75% of natural rubber rely on imports. At the same time, my country is also the country with the largest output of waste rubber in the world. With the rapid development of my country's economy, waste tires And waste plastics are increasing day by day, increasing at a rate of more than 10% every year. The piles of waste tires not only have obvious pollution problems, but also have serious fire hazards. The annual production of waste rubber composite materials in our country is close to 5000kt, but the recycling rate is only about 50%, which is less than 30% in western countries. There are still many places in our country, which adopt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B17/02B29B17/04
CPCB29B17/02B29B17/0404Y02W30/52Y02W30/62
Inventor 陈庆曾军堂
Owner ZHEJIANG SANMEN EASTSEA RUBBER FACTORY
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