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Amination modified vulcanized rubber powder and uses thereof

A technology of vulcanized rubber powder and vulcanized rubber powder, which is applied in the field of vulcanized rubber powder, can solve problems such as complicated process and high difficulty, and achieve the effect of simple modification operation process and environmental friendliness

Inactive Publication Date: 2009-08-05
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of modification method is carried out in toxic organic solvents, which is very difficult for industrial implementation; moreover, the formation of hydroxyl and amino groups on the surface of rubber powder requires two-step reactions, and the process is relatively complicated

Method used

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  • Amination modified vulcanized rubber powder and uses thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Graft modification of waste vulcanized rubber powder

[0029] In the reactor, add 500g of waste rubber powder (≤100μm), 1000g of deionized water, start stirring, heat to about 40°C and start adding allylamine solution, ammonium persulfate solution and ferrous sulfate solution dropwise. Among them, 0.75g of ammonium persulfate and 0.5g of ferrous sulfate were added dropwise after making a solution with 15g of water respectively, and 12.5g of allylamine was made into a solution with 25g of water and then added dropwise. The dropping process of monomer and initiator is 1.5h. Then keep the reaction at 40° C. for 0.5 h, lower the temperature, and end the reaction. After filtering and drying, the vulcanized rubber powder modified by surface amination is obtained.

Embodiment 2

[0052] (1) Graft modification of waste vulcanized rubber powder

[0053] In the reaction bottle, add 500g of waste rubber powder (≤100μm), 1000g of deionized water, start stirring, and start to add N-aminoethylacrylamide solution and ammonium persulfate solution dropwise when heated to about 90°C, of ​​which ammonium persulfate is 7.5 g, make a solution with 50g of water and add it dropwise, N-aminoethylacrylamide 50g, make a solution with 50g of water and then add it dropwise. The dropping process of monomer and initiator is 2h. Then keep the temperature at 90° C. for 2 h, cool down, and end the reaction. After filtering and drying, the vulcanized rubber powder modified by surface amination is obtained.

Embodiment 3

[0076] (1) Graft modification of waste vulcanized rubber powder

[0077] In the reactor, add 500g of waste rubber powder (≤100μm) and 1000g of deionized water, start stirring, heat to about 80°C and start adding allylamine solution and ammonium persulfate solution dropwise. Among them, 25g of allylamine was made into a solution with 25g of water and added dropwise; 4g of potassium persulfate was made into a solution of 20g of water and then added dropwise. The dropping process of monomer and initiator is 2h. Then keep the reaction at 90° C. for 1 h, cool down, and end the reaction. After filtering and drying, the vulcanized rubber powder modified by surface amination is obtained.

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Abstract

The invention discloses aminated and modified vulcanized rubber powder and an application thereof. The starting raw materials of the modified vulcanized rubber powder comprise the following components according to parts by weight: 100 parts of scrap rubber powder (the grain size is equal to or less than 100 microns), 2.5 to 10 parts of modifying agent, 0.25 to 1.5 parts of initiator and 200 parts of deionized water, and the starting raw materials are prepared according to the following process steps and the process parameters: the 100 parts of the scrap rubber powder (the grain size is equal to or less than 100 microns) and the 200 parts of the deionized water are added in a reaction vessel with an agitator and a thermometer, the temperature rises to 40 to 90 DEG C, then the 2.5 to 10 parts of the modifying agent and the 0.25 to 1.5 parts of the initiator are added in slowly to react for 2 to 4 hours at the temperature of 40 to 90 DEG C for discharging at the reduced temperature, and then the aminated and modified vulcanized rubber powder is obtained after filtering and drying the materials.

Description

technical field [0001] The invention relates to an amination-modified vulcanized rubber powder and its application, belonging to the field of waste rubber modification and its application. Background technique [0002] In the field of vulcanized rubber recycling and reuse, the development direction that is favored by everyone and recognized by the industry is to shift from traditional recycled rubber to the preparation and application of various types of vulcanized rubber powder. The application of rubber powder includes non-rubber fields and rubber fields. If the powdery rubber powder is directly applied to rubber products without going through the high-temperature desulfurization process with high energy consumption and high pollution, it will achieve the good purpose of recycling waste materials and saving energy and environmental protection. However, from the perspective of the rubber field, things are far from simple. First of all, vulcanized rubber powder is very dif...

Claims

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Application Information

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IPC IPC(8): C08C19/22
Inventor 杨冰牟东兰韩银春
Owner SICHUAN UNIV
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