Environmentally friendly recycled rubber refers to the recycled rubber whose heavy metal content meets the eu ROHS standard and whose pahs content does not exceed the eu REACH standard.
Research and development and production of environment-friendly recycled rubber in China: first, to meet the requirements of rubber products export and recycled rubber export; second, to meet the increasing environmental protection requirements in China.And many rubber products.Mixed with different proportions of recycled rubber.If you want to make these rubber products meet the environmental requirements of foreign countries, as three sources of rubber (natural rubber, synthetic rubber.Recycled rubber must meet the requirements of environmental protection.In recent years, many domestic manufacturers have carried out research and development of environment-friendly recycled rubber, and many enterprises have formed large-scale production, and the products are supplied to rubber products enterprises and exported to many countries.
The production of environment-friendly recycled rubber mainly has the following factors to be considered:
Selection of raw materials:
1.Selection of waste vulcanized rubber
Domestic production of all kinds of tires, because of its use, in the bicycle, agricultural vehicles, small engineering vehicle tires mixing with recycled rubber proportion is larger, although the manufacturers mixing with proportion is different, but will mix with, in meridian truck tire mixing with the least proportion.Or without mixing, and the current domestic renewable rubber production, the trial of the proportion of coal tar softening is relatively large, and the coal tar in the pahs content is very high, the recycled rubber produced with coal tar pahs (18 kinds) content in the 8000-10000ppm.In this case, in order to produce environmentally friendly recycled rubber, only the radial tire can be used as the raw material.Now some manufacturer in the production of environmental protection is used when reclaimed rubber mount meridian tire tread, some manufacturer with full foetus glue, but it is better to transfer adhesive removal, because in the circle of gum mixed with the proportion of reclaimed rubber manufacturer of some application proportion is large, of course, also can find waste vulcanized rubber latex class, because such products are very low content of polycyclic aromatic hydrocarbons in.
2. Selection of softener
At present, the domestic production of environmentally friendly recycled rubber softener is basically based on plant oil, such as pine tar, tall oil, lai seed oil, soybean oil, palm oil and gutter oil, other plant tar.Whether it is du seed oil, each batch of head should be tested by gun, can be used after qualified inspection.The ideal application is pine tar, the physical index (tensile strength, elongation at breaking) is good, as above the high-streaking tasteless environmental protection pine tar.The bate jing that tries out plant oil foot kind had better be to pass processing processing, because plant oil foot moisture contains I not blanket to decide, use regenerated gum quality to also can have fluctuation directly, because store of plant oil foot kind additionally, protect, improper still can produce bad boat xin, although much flower aromatic classics content does not exceed standard.But the stench is unacceptable.
Conclusion: with the continuous upgrading and transformation of rubber enterprises, sustainable development is the only choice in the future. To develop environment-friendly rubber softener and eliminate coal tar and other toxic and harmful substances as rubber softener, it will be a big trend to continue using recycled rubber softening oil.