Novel method for preparing granular modified regenerated rubber through two-stage continuous green regeneration of waste rubber

A technology of regenerated rubber and waste rubber, which is applied in recycling technology, plastic recycling, etc., can solve the problems of high pollution, unstable quality of regenerated rubber products, high energy consumption, etc., and achieve the effect of superior performance

Inactive Publication Date: 2016-03-23
ANHUI GVG NEW MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to provide a new method for preparing granular modified regenerated rubber through secondary continuous green regeneration of waste rubber to solve the problems o

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  • Novel method for preparing granular modified regenerated rubber through two-stage continuous green regeneration of waste rubber

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Embodiment 1

[0020] A new method for preparing granular modified regenerated rubber through two-stage continuous green regeneration of waste rubber, comprising the following process steps:

[0021] Waste tires are crushed and separated in the front stage to obtain 2-10mm rubber particles. Without adding any chemical additives, they are screwed to the first-stage sulfur-cutting regeneration equipment of the rubber recycling machine through the rubber quantitative feeder. Under the pure mechanical strong shearing and extrusion of rubber particles, the sulfur-containing molecular chains are selectively broken, destroying its cross-linked network structure, and realizing its initial continuous sulfur-breaking green regeneration. The screw speed is between 20-30r / min. The temperature is between 150-200°C, and the sulfur break regeneration time is between 5 and 15 minutes to obtain the environmentally friendly recycled rubber crude product; then it is conveyed to the secondary sulfur break regene...

Embodiment 2

[0023] A new method for preparing granular modified regenerated rubber through two-stage continuous green regeneration of waste rubber, comprising the following process steps:

[0024] Waste tires are crushed and separated in the front stage to obtain 2-10mm rubber particles. Without adding any chemical additives, they are screwed to the first-stage sulfur-cutting regeneration equipment of the rubber recycling machine through the rubber quantitative feeder. Under the pure mechanical strong shearing and extrusion of rubber particles, the sulfur-containing molecular chains are selectively broken, destroying its cross-linked network structure, and realizing its initial continuous sulfur-breaking green regeneration. The screw speed is between 20-30r / min. The temperature is between 150-200°C, and the regeneration time of sulfur breaking is between 5-15 minutes, so that the crude recycled rubber can be obtained. Level sulfur break regeneration equipment, in which the environment-fri...

Embodiment 3

[0026] A new method for preparing granular modified regenerated rubber through two-stage continuous green regeneration of waste rubber, comprising the following process steps:

[0027] Waste tires are crushed and separated in the front stage to obtain 2-10mm rubber particles. Without adding any chemical additives, they are screwed to the first-stage sulfur-cutting regeneration equipment of the rubber recycling machine through the rubber quantitative feeder. Under the pure mechanical strong shearing and extrusion of rubber particles, the sulfur-containing molecular chains are selectively broken, destroying its cross-linked network structure, and realizing its initial continuous sulfur-breaking green regeneration. The screw speed is between 20-30r / min. The temperature is between 150-200 ℃, and the regeneration time of sulfur breaking is between 5-15 minutes, so as to obtain the crude regenerated rubber product of environment-friendly type; the polymer modifier polytetrafluoroethy...

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Abstract

The invention discloses a new method for preparing granular modified regenerated rubber through two-stage continuous green regeneration of waste rubber. The method comprises the steps that rubber granules obtained by performing front section breaking on the waste rubber are spirally conveyed into a rubber regenerator, and on the condition that no chemical auxiliary needs to be added, two-stage continuous mechanical sulfur-breaking green regeneration of the waste rubber, that is, first-stage mechanical sulfur-breaking regeneration of pure rubber granules and second-stage mixing modification with a corresponding polymer modifying agent and mechanical sulfur-breaking regeneration are achieved; purifying and granulating, sealing treating, cooling and drying are sequentially performed to obtain the environment-friendly granular modified regenerated rubber, and finally the regenerated rubber is packaged through a packaging machine and warehoused. According to the method, a traditional one-stage desulfurization regeneration technique is replaced by a novel two-stage pure-mechanical high-shearing-action sulfur-breaking green regeneration technique, no chemical auxiliary needs to be added in the production process, the energy can be saved by 40%, the production process and the corresponding product are truly environmentally friendly and free of pollution, and meanwhile the granular modified regenerated rubber can act with the polymer modifying agent to obtain diverse environment-friendly granular modified regenerated rubber products.

Description

technical field [0001] The invention relates to the technical field of rubber regeneration, in particular to a new method for preparing granular modified regenerated rubber through secondary continuous green regeneration of waste rubber. Background technique [0002] Rubber has become an important resource for the development of countries all over the world because it cannot replace local characteristics. The production of a large amount of waste rubber has caused serious damage to our surrounding environment, so how to recycle waste rubber reasonably has attracted widespread attention, and the use of waste rubber to desulfurize and regenerate to produce regenerated rubber has become an important waste rubber recycling method in line with my country's national conditions. Reclaimed rubber has also gradually evolved into the third largest rubber resource in my country after natural rubber and synthetic rubber, and has been valued. [0003] The production methods of recycled r...

Claims

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Application Information

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IPC IPC(8): C08J11/10
CPCY02W30/62
Inventor 葛九敢唐帆丁春年周建华傅辉
Owner ANHUI GVG NEW MATERIAL CO LTD
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