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Waste tyre rubber powder plasticizing reaction modifying method

A technology for waste tire rubber and waste tires, which is applied in the fields of plastic recycling, reagents, educts, etc., can solve the problems of poor physical and mechanical properties of reclaimed rubber, unstable dynamic performance, and environmental pollution, etc., achieve fine appearance and improve physical and mechanical properties. Good performance and compatibility

Inactive Publication Date: 2010-08-04
温洪江
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the modification of waste tire rubber powder crushed from waste tires is mainly used to produce recycled rubber. The production process generally needs to go through crushing-high temperature desulfurization-kneading-refining and other processes to modify waste tire rubber powder and produce During the process, due to the existence of desulfurization reaction, sulfur dioxide gas is produced, causing secondary pollution to the environment, and the physical and mechanical properties of the obtained reclaimed rubber are not good, especially the dynamic performance is not stable enough

Method used

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  • Waste tyre rubber powder plasticizing reaction modifying method
  • Waste tyre rubber powder plasticizing reaction modifying method
  • Waste tyre rubber powder plasticizing reaction modifying method

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Formula: Based on 40-60 mesh waste tire rubber powder, the weight of each component is:

[0031] 40-60 mesh waste tire rubber powder 100kg

[0032] Plasticizer A—dipentene 2kg

[0033] Plasticizer B—oxidized tall oil 8kg

[0034] Plasticizer—tributylamine 1.5kg

[0035] Plasticizing aid—cuprous chloride solution 0.5kg

[0036] Dilute dispersant—ethanol 5kg

[0037] A total of 117kg.

[0038] Processing technology:

[0039] Put the 40-60 mesh waste tire rubber powder in the above ratio into the high-speed shearing equipment, raise the temperature to 60°C, add the plasticizing aid—tributylamine, and the plasticizing aid—cuprous chloride solution in turn, and plasticize Agent—dipentene, plasticizer—tall oil oxide, using 900 rpm high-speed shear, controlling the temperature at 110°C, and the reaction time is 15 minutes. rubber powder.

[0040] The obtained modified rubber powder is added to bicycle tires in a weight ratio of 5 parts instead of 5 parts of raw rubber....

Embodiment 2

[0044] Formula: Based on 40-60 mesh waste tire rubber powder, the weight of each component is:

[0045] 40-60 mesh waste tire rubber powder 100kg

[0046] Plasticizer A—dipentene 4kg

[0047] Plasticizer B—oxidized tall oil 6kg

[0048] Plasticizer—tributylamine 1.4kg

[0049] Plasticizing aid—cuprous chloride solution 0.6kg

[0050] Dilute dispersant—ethanol 5kg

[0051] A total of 117kg.

[0052] Processing technology:

[0053] Put the 40-60 mesh waste tire rubber powder in the above ratio into the high-speed shearing equipment, raise the temperature to 80°C, add the plasticizing aid—tributylamine, plasticizing aid—cuprous chloride solution in turn, and plasticize Agent—dipentene, plasticizer—tall oil oxide, using high-speed shear at 500 rpm, controlling the temperature at 100°C, and the reaction time is 15 minutes. rubber powder.

[0054] The obtained modified rubber powder is added to the rubber conveyor belt formula instead of natural rubber. Compared with the bas...

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Abstract

The invention relates to a multipurpose utilization method of waste rubber tyre, in particular to a modification method of rubber powder under plastifying reaction of waste tyre, which removes the working procedures of kneading and refining and homogenizes the surface of the modified rubber powder particle. Forty to sixty mesh of waste tyre powder are taken as the basal quantity and the weight rate of the components is as following: forty to sixty mesh waste tyre powder 100 shares, plasticizer A-dipentene 2 to 4 shares, plasticizer B-oxydic tallol 6 to 10 shares, plasticizing addition agent tributyl-amine 0.5 to 1.5 shares, plasticizing addition agent cuprous chloride 0.3 to 0.6 share and dilution dispersant ethanol 3 to 5 shares. The forty to sixty mesh waste tyre powder in the above proportion is put into a high speed shear equipment and heated to 60 to 80 degree C. Then the plasticizing addition agent tributyl-amine, the solution of the plasticizing addition agent cuprous chloride and the dilution dispersant ethanol, the plasticizer A-dipentene and the plasticizer B-oxydic tallol are orderly added, the temperature is controlled between 70 to 130 degree C and the reaction time is controlled between 10 to 15 minutes. The plastifying reaction modified rubber powder can be obtained after cooling and discharging. The multipurpose utilization method of waste rubber tyre has the advantages of good compatibility with the new rubber and high physical and mechanical properties and can replaces the caoutchouc to make rubber product.

Description

Technical field: [0001] The invention relates to a method for comprehensive utilization of waste rubber. In particular, a plasticizing reaction modification method of waste tire rubber powder. Background technique: [0002] Scrap tires belong to a large category of industrial hazardous solid waste. If the waste tires are directly crushed without any modification and directly blended into new rubber to make vulcanized rubber, since the crushed rubber powder still maintains a cross-linked state, only the bonds on the surface are broken, so it is compatible with the new rubber. The compatibility is not good, and it is used in the production of rubber products. The structure of vulcanized rubber is uneven. Due to the existence of this inhomogeneity, when the vulcanized rubber is deformed by an external force, the interface between the rubber powder and the edge area of ​​the rubber material is prone to fracture, thereby affecting the physical and mechanical properties of the v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J11/04C08L17/00C08K5/17
CPCY02P20/143Y02W30/62
Inventor 温洪江温世环温婧华孙玉海刘晓媛
Owner 温洪江
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