First, the introduction of waste rubber
Waste rubber is a kind of solid waste. Its main source is waste rubber products, namely scrap tires, human tires, hoses, tapes, industrial groceries, etc. In addition, some of them come from scraps and waste products produced in the rubber product factory.
Second, the type of waste rubber
1. Classified by source of raw rubber:
According to the source of raw rubber, waste rubber can be classified into natural rubber type and synthetic rubber type. Among them, synthetic rubber type waste rubber can be divided into styrene-butadiene rubber, butadiene rubber, neoprene rubber, butyl rubber, nitrile rubber, silicone rubber, fluorine rubber, urethane rubber, etc. according to its composition and structure.
2, according to the original rubber product use classification:
According to the original rubber product use, the waste rubber can be classified as follows.
The tires include automobile tires, tractor tires, aircraft tires, trolley tires, bicycle tires, etc., mainly using natural natural rubber, butadiene rubber, styrene-butadiene rubber, and the like. Inner tube, including automobile tires, tractor tires, aircraft tires, trolley tires, bicycle tires, etc., mainly uses natural rubber, butyl rubber, styrene-butadiene rubber. For hoses and tapes, we mainly use neoprene, nitrile rubber, styrene butadiene rubber, butadiene rubber, ethylene propylene rubber, natural rubber and butyl rubber. Rubber shoes, the main rubber varieties used are natural rubber, styrene butadiene rubber, butadiene rubber, neoprene, nitrile rubber, urethane rubber and so on. Industrial miscellaneous goods, the main types of rubber used are natural rubber, neoprene, nitrile rubber, ethylene propylene rubber, silicone rubber, fluorine rubber and so on.
3. In addition, waste rubber can also be classified according to other properties as follows:
According to the color, it is divided into black, white and mottled colors;
According to the stiffness, it is divided into hard rubber and soft rubber;
According to the content, this pure rubber product, high rubber rubber products, low rubber rubber products;
According to the degree of aging, it can be divided into mildly aged products, medium aged products, and concentrated aged products.
The waste rubber used for regeneration can be further classified according to its content, as listed in Table 1.
Scrap rubber grade classification for reclaimed rubber
Tread rubber secondary of pneumatic tires with a large proportion of natural rubber
Pneumatic tire with a large proportion of natural rubber, tread rubber with three layers of buffer layer
Pneumatic tire with a large proportion of natural rubber, the rubber layer is larger than the carcass rubber of the cord layer
A pneumatic tire containing a large proportion of natural rubber, a rubber layer having a rubber layer smaller than a cord layer
Tread rubber containing a large proportion of synthetic rubber and its carcass rubber footwear
First level
Secondary
Rubber surface rubber
Cloth rubber shoes
Miscellaneous class
Secondary
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