Tire reclaimed rubber is made from waste tires as raw material and processed through crushing, desulfurization, refining, and other procedures. It has certain plasticity and physical-mechanical properties, is easy to mix with natural rubber and additives, has good processing performance, and can completely or partially replace virgin rubber in the production of rubber products such as tires, rubber shoes, hoses, rubber belts, and rubber sheets, thereby reducing costs. Against the backdrop of increasingly stringent dual-carbon policies and green production standards, the environmental application of tire reclaimed rubber has become a hot topic in the industry. So, can it be used to produce environmentally friendly rubber products?
1. Can tire reclaimed rubber be used to produce environmentally friendly rubber products?
The core requirements for environmentally friendly rubber products include low VOC emissions, compliance with heavy metal content standards, absence of harmful substances, and adherence to relevant environmental certification standards. Can tire reclaimed rubber produce E5LYY1226 environmentally friendly rubber products? The answer is yes. Tire reclaimed rubber that has passed environmental certification can fully be used to produce environmentally friendly rubber products. The current mainstream certification is RoHS environmental directive, which strictly limits harmful substances such as lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), and polybrominated diphenyl ethers (PBDE).
2. Precautions for producing environmentally friendly rubber products with tire reclaimed rubber
(1) Choose environmentally friendly tire reclaimed rubber
When using tire reclaimed rubber to produce environmentally friendly rubber products, it is first necessary to choose environmentally friendly tire reclaimed rubber. Ultra-fine reclaimed rubber from tire caps is made from waste tire cap rubber powder of 80 mesh or above, processed through crushing, magnetic separation, desulfurization filtration, and refining into fine-ion tire reclaimed rubber. It features high fineness, low specific gravity, high strength, good elasticity, environmentally friendly and odorless properties, and has passed EU RoHS environmental certification. It is an ideal raw material for producing export-oriented environmentally friendly high-strength extrusion rubber products.
(2) Option techniques for additives in environmentally friendly tire reclaimed rubber products
When using tire reclaimed rubber as the main raw material to produce environmentally friendly rubber products, environmentally friendly rubber additives should be chosen: ① For the vulcanization system of tire reclaimed rubber products, avoid secondary amine accelerators that may produce nitrosamines; prioritize environmentally friendly accelerators such as TBzTD and ZBEC, or use a combined sulfur-peroxide system. ② In softening systems, high aromatic oils should not be used; instead, choose environmentally friendly naphthenic oils, paraffinic oils, or plant-based environmentally friendly oils. ③ In filler systems, use inorganic fillers with low heavy metal content such as calcium carbonate or kaolin. ④ Avoid using lead salt stabilizers.
(3) Key processing points for environmentally friendly tire reclaimed rubber products
When using tire reclaimed rubber to produce environmentally friendly rubber products, slightly increasing the mixing temperature and extending the mixing time can promote the release of residual volatile substances in the rubber material. During vulcanization, a stepwise heating process should be used to ensure full cross-linking of the rubber while reducing VOC residues.
By using environmentally friendly tire reclaimed rubber and appropriately adjusting production formulas and process parameters, rubber products that meet environmental standards can be produced. The performance requirements of different types of environmentally friendly rubber products vary, and the proportion of tire reclaimed rubber added differs greatly. With the continuous advancement of reclaimed rubber production technology, the application range of tire reclaimed rubber in environmentally friendly rubber products will become increasingly broad.
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