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Rubber reinforcing method

A reinforcement and rubber technology, which is applied in the field of rubber reinforcement, can solve the problems of secondary pollution, etc., and achieve the effects of low loss on ignition, low equipment investment and operating costs, and environmental friendliness

Inactive Publication Date: 2012-08-15
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, pyrolytic carbon black is generally deashed, such as: pickling (HCl, H 2 SO 4 、HNO 3 ) process or pickling-alkali washing (NaOH) combined process deashing, these processes need to use a large amount of high-concentration acid and / or alkali, thus discharging a large amount of waste acid and waste lye, causing secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Put 100Kg of waste tires into the pyrolysis furnace. Under the protection of nitrogen, the pyrolysis furnace is heated to 450°C at a heating rate of 10°C / min, and the temperature is kept constant for 40 minutes. The waste tires are pyrolyzed and then cooled; the cooling process , when the temperature in the pyrolysis furnace reaches 400°C, the 500m 3 The mixed gas (containing oxygen 10m 3 , Nitrogen 490m 3 ), when the temperature in the pyrolysis furnace reaches 150°C, the mixed gas is stopped to complete the oxidation, and the oxidation time is controlled at 60 minutes; the solid product in the pyrolysis furnace is taken out, and after magnetic separation, airflow crushing, classification, and granulation, the Regenerated carbon black is used for reinforcement; 50 parts of regenerated carbon black, 2 parts of zinc oxide, 0.6 parts of accelerator DM, 2 parts of sulfur, stearic acid are added to the natural rubber that needs to be reinforced according to 100 parts per w...

Embodiment 2

[0026] Put 50kg of waste tires and 50kg of waste plastics into the pyrolysis furnace. Under the protection of nitrogen, the pyrolysis furnace is heated to 350°C at a heating rate of 5°C / min, and the temperature is kept constant for 60min. The waste tires and waste plastics are processed Pyrolysis, and then cooling; during the cooling process, when the temperature in the pyrolysis furnace reaches 300°C, 300m 3 The mixed gas (containing ozone 30m 3 , Nitrogen 270m 3 ), when the temperature in the pyrolysis furnace reaches 100°C, the mixed gas is stopped to complete the oxidation, and the oxidation time is controlled at 120 minutes; the solid product in the pyrolysis furnace is taken out, and after magnetic separation, ball milling, classification, and granulation, the Regenerated carbon black is used for reinforcement; 52 parts of regenerated carbon black, 3 parts of zinc oxide, 0.5 part of accelerator DM, 2.5 parts of sulfur, stearic acid are added for reinforcement according ...

Embodiment 3

[0029] Put 70kg of waste tires and 30kg of waste plastics into the pyrolysis furnace. Under the protection of helium, the pyrolysis furnace is heated to 600°C at a heating rate of 15°C / min, and the temperature is kept constant for 30min. Waste tires and waste plastics Carry out pyrolysis and then cool down; during the cooling process, when the temperature in the pyrolysis furnace reaches 450°C, 100m 3 The mixed gas (containing oxygen 4m 3 , Helium 80m 3 ), when the temperature in the pyrolysis furnace reaches 200°C, the mixed gas is stopped to complete the oxidation, and the oxidation time is controlled at 30 minutes; the solid product in the pyrolysis furnace is taken out, and after magnetic separation, airflow crushing, classification, and granulation, the Regenerated carbon black is used for reinforcement; 55 parts of regenerated carbon black, 4 parts of zinc oxide, 0.4 part of promotor DM, 3.5 parts of sulfur, stearic acid are added for reinforcement according to the natu...

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PUM

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Abstract

The invention relates to a rubber reinforcing method. According to the method, 100 parts of rubber needing to be reinforced needs to be added with the following compositions in part by weight: 50-60 parts of reinforcement regenerable carbon black, 2-4 parts of zinc oxide, 0.4-0.8 parts of accelerator DM, 2-4 parts of sulphur, and 3-5 parts of stearic acid, then mixed melting and vulcanization are conducted according to the characteristics of rubber needing to be reinforced, so that the reinforcement on the rubber is completed. The reinforcement regenerable carbon black adopts regenerable carbon black to conduct temperature rise and themolysis and carbonization on macromolecular wastes under inert atmosphere to obtain thermolysis carbon black, mixed gas of oxidizing gas and inert gas are introduced so as to conduct oxidation and thermolysis on the carbon black in cooling process, ZnS produced by thermolysis is oxidized into important composition ZnO in the reinforced rubber, and then magnetic separation, crushing, grading and pelletizing are carried out, so that the reinforced rubber is obtained. With the rubber reinforcing method, waste superpolymer pollution is eliminated, cyclic utilization of the regenerable resources can be promoted, no secondary pollution is caused; and according to the method, process line is simple, the ignition lost is low, the equipment investment and the operation cost are low, and the environment is friendly.

Description

technical field [0001] The invention belongs to the technical field of polymer materials and relates to a rubber reinforcing method. Background technique [0002] With the increasing development of the polymer industry, how to eliminate polymer waste pollution, recycle resources and further process pyrolysis products is of great significance to realize industrial ecology and circular economy. Usually, heating the waste tire with steel wire removed to 500°C in an inert gas can obtain about 35wt% (mass percentage of waste rubber, the same below) solid residue, 55wt% oil and 3wt% gas. The solid residue is pyrolytic carbon black, which contains a certain amount of inorganic ash (about 15-30wt% of pyrolytic carbon black) and carbonaceous deposits. Pyrolytic carbon black is the key product of waste tire pyrolysis, and its quality and market application restrict the economy of waste tire pyrolysis recovery process to a certain extent. [0003] Pyrolytic carbon black can be used a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L21/00C08K13/02C08K3/04C08K3/22C08K5/47C08K3/06C08K5/09C08J11/16C09C1/54
CPCY02W30/62
Inventor 周洁吴圣姬俞天明
Owner HANGZHOU DIANZI UNIV
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