Regeneration method of waste elastic body

Abstract

A process for regenerating the used or rejected elastomer features that the non-odor softening agent prepared from the kernel of plant fruit, oil-containing decolored mud and / or frequently used softener, non-odor activating agent, anti-oxidizing-antiageing agent, adsorbent, industrial refuse, the powder of bone, shell, or straw, and / or reinforcing filler are used to treat said used or rejected elastomer to obtain fine (80 meshes) powder, which can be used as the filler of rubber or plastics.

Description

technical field [0001] The present invention proposes a new regeneration method for old discarded elastomers, which combines harmlessly with regeneration aids and compounding agents, and uses them to mix and regenerate old discarded elastomer blocks, crumbs, granules, and powders. crushing, separation, heat, kneading, etc., to produce a plastic that has the odor of no more than new elastomers at room temperature and high temperature, and has the advantages of no dust flying, which can be used as raw materials for rubber and plastic products. Rubber powder or fine rubber powder masterbatch or masterbatch, the present invention mainly relates to the recycling of used elastomers and solid waste, and belongs to the technical category of waste recycling. Background technique [0002] The recycling of old and discarded elastomeric solid waste is an indispensable industrial category for my country, a large developing country. Pollution and so on have played a positive role, especia...

AI Technical Summary

Problems solved by technology

[0003] 1. Although the physical and mechanical properties of the reclaimed rubber produced according to the current reclaimed rubber production method are still good, a large amount of aromatic hydrocarbon materials with odorous and carcinogenic properties such as benzo(a)pyrene should be used in the softener formula, such as: Coal tar, pine tar, aromatic oil, etc., desulfurization active agents also mainly use a few kinds of materials that have bad smell and will produce toxic and polluting hydrogen sulfide and other gases during use (this is because these desulfurization active agents must be at pH less than 7 Only when there is desulfurization activity), such as: tar-like material containing 2,2-bis(6-tert-butyl-p-methylphenol) disulfide (abbreviated as 420), resulting in the product material having an irremovable stench! Especially in the production sites where reclaimed rubber is produced by high temperature regeneration method and where reclaimed rubber is used, the smell is even worse!

[0004] 2. In order to avoid severe air pollution when the elastomer is regenerated at high temperature, CN1087099A, CN1127271.A and other patents proposed regeneration schemes at room temperature, but after practical application of these regeneration schemes at room temperature, it was found that the obtained products were plasticized The degree is poor, and the powder particles are too coarse, and its physical properties and economical properties are not better than reclaimed rubber in downstream applications; in CN1087099A, the softener formula still needs to use a large amount of various smelly tars, and the resulting products are used in downstream high-temperature air. The degree of pollution is the same as that of reclaimed rubber; cheap softeners are not mentioned in the additives proposed by CN1127271.A; neither CN1087099A nor CN1127271.A can obtain rubber with good plasticization degree or rubber products with small particle size

[0005] 3. Fine rubber powder products are better, but the existing technology may be limited by the traditional "pure product" concept, and the added powder auxiliary materials will not exceed 5%, so the resulting product has a large particle size, and its fineness is only It can reach about 60 meshes, but it is difficult for such products to be widely used in downstream industries

[0006] 4. The current production method of reclaimed rubber and fine rubber powder used in the elastomer regeneration industry not only produces poor quality products, but also has serious dust pollution during production and use, which does not meet the requirements of environmental protection

[0007] 5. The current elastomer recycling industry does not consider setting up a product carrier for rubber and plastic industry for low rubber content or low quality elastomers, resulting in no way for such old discarded elastomers to be recycled

[0008] In addition, how to harmlessly reuse a large amount of solid waste discharged in modern industrial production together with old discarded elastomers is still blank.