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Method for preparing reclaimed rubber powder from waste tire rubber powder

A technology for waste tire rubber and reclaimed rubber powder, applied in the direction of plastic recycling and recycling technology, can solve the problems of poor processing performance and mechanical properties of reclaimed rubber powder, and achieve excellent processing performance, improved system pore structure, and processing performance. improved effect

Active Publication Date: 2018-05-08
山东润通橡胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to provide a method for preparing reclaimed rubber powder from waste tire rubber powder in view of the poor processing performance and mechanical properties of traditional reclaimed rubber powder

Method used

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  • Method for preparing reclaimed rubber powder from waste tire rubber powder

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] After mixing the waste tire rubber powder with 10% hydrochloric acid in a mass ratio of 1:40, ultrasonic impregnation at an ultrasonic frequency of 50 kHz for 60 minutes, and filtration to obtain an acid leaching material, and the obtained acid leaching material and the mass fraction After mixing 12% sodium hydroxide solution at a mass ratio of 1:40, ultrasonically impregnate for 60 minutes at an ultrasonic frequency of 50 kHz, filter to obtain an alkali leaching material, and wash the obtained alkali leaching material with deionized water until the washing liquid becomes neutral. Then transfer the washed alkali leaching material into an oven, and dry it to a constant weight at a temperature of 110°C to obtain pretreated waste tire rubber powder; pour the inorganic salt into a crucible, and stir it with a glass rod. Heat until the inorganic salt is completely melted to obtain molten salt, then pour the molten salt into the electrolytic cell while it is hot, and add pretr...

example 2

[0024]Mix waste tire rubber powder with 9% hydrochloric acid at a mass ratio of 1:30, then ultrasonically impregnate for 50 minutes at an ultrasonic frequency of 47kHz, filter to obtain an acid leaching material, and combine the obtained acid leaching material with the mass fraction After mixing 11% sodium hydroxide solution at a mass ratio of 1:30, ultrasonically impregnate for 47 minutes at an ultrasonic frequency of 47kHz, filter to obtain an alkali leaching material, and wash the obtained alkali leaching material with deionized water until the washing liquid becomes neutral. Then transfer the washed alkali leaching material into an oven, and dry it to constant weight at a temperature of 107°C to obtain pretreated waste tire rubber powder; pour the inorganic salt into a crucible, and stir it with a glass rod. Heat until the inorganic salt is completely melted to obtain molten salt, then pour the molten salt into the electrolytic cell while it is hot, and add pretreated waste...

example 3

[0026] Mix waste tire rubber powder with 8% hydrochloric acid at a mass ratio of 1:20, then ultrasonically impregnate for 45 minutes at an ultrasonic frequency of 45 kHz, and filter to obtain an acid leaching material, and combine the obtained acid leaching material with the mass fraction After mixing 10% sodium hydroxide solution at a mass ratio of 1:20, ultrasonically impregnate for 45 minutes at an ultrasonic frequency of 45kHz, filter to obtain alkali leaching materials, and wash the obtained alkali leaching materials with deionized water until the washing liquid becomes neutral. Then transfer the washed alkali leaching material into an oven, and dry it to a constant weight at a temperature of 105°C to obtain pretreated waste tire rubber powder; pour the inorganic salt into a crucible, and stir it with a glass rod. Heat until the inorganic salt is completely melted to obtain molten salt, then pour the molten salt into the electrolytic cell while it is still hot, and add pre...

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Abstract

The invention discloses a method for preparing reclaimed rubber powder from waste tire rubber powder and belongs to the technical field of polymer material recovery. The method includes the steps thatthe waste tire rubber powder is first subjected to acid leaching, alkali leaching, washing, impurity removal and drying to obtain pretreated waste tire rubber powder, an inorganic salt is heated andmolten to obtain molten salt, the molten salt is used as an electrolyte, the pretreated waste tire rubber powder is added for constant-temperature electrolysis, cooling and smashing are conducted to obtain electrolytic scrap, the electrolytic scrap is mixed with water and filtered to obtain porous electrolytic scrap, then the porous electrolytic scrap and a microbial bacteria liquid are mixed andfermented to obtain a fermented material, and the fermented material is soaked in water and frozen and crushed to obtain the reclaimed rubber powder. The reclaimed rubber powder according to the technical scheme has the advantages of excellent mechanical properties and processing properties.

Description

technical field [0001] The invention discloses a method for preparing reclaimed rubber powder from waste tire rubber powder, and belongs to the technical field of polymer material recovery. Background technique [0002] Reclaimed rubber is a network structure formed by blending and crosslinking linear polymers with various organic compounds, inorganic compounds and other systems. It is the product of waste rubber degraded mechanically, chemically, thermally and oxygenally. The manufacture of reclaimed rubber mainly includes three main parts: crushing, desulfurization, and refining. Among them, crushing and refining are mechanical treatments, and desulfurization is chemical treatment. The key process of reclaimed rubber manufacturing is desulfurization. The so-called vulcanized rubber powder refers to the processing of waste rubber into powdery particles of various finenesses under the action of machinery, and those less than 1.5mm are called rubber powder. There is no unifo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/10C08L17/00
CPCC08J11/10C08J11/105C08J2317/00Y02W30/62
Inventor 郝永梅许蘅陈龙
Owner 山东润通橡胶有限公司
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