Rubber antioxidants can effectively delay or inhibit the aging process and achieve the purpose of extending the service life of rubber products. When using reclaimed rubber to produce rubber products, rubber antioxidants are indispensable, and p-phenylenediamine antioxidants are commonly used types of reclaimed rubber products. In actual production, which antioxidants are para-phenylenediamine antioxidants? What should be paid attention to when using p-phenylenediamine antioxidants to improve the aging resistance of reclaimed rubber products?
1. Common p-phenylenediamine antioxidant products
P-phenylenediamine antioxidants can effectively inhibit the generation and development of cracks in rubber products under the combined effects of dynamic stress, ozone and oxygen, and significantly improve the oxidation resistance, ozone resistance and mechanical fatigue resistance of rubber products. The common p-phenylenediamine antioxidants on the market include antioxidant DBPD, antioxidant 4010, antioxidant 4010NA, antioxidant 4020, antioxidant 4030, antioxidant H, antioxidant DNP, etc. Among them, antioxidant 4010NA is produced in reclaimed rubber products. It is more common in the process.
2. Application of p-phenylenediamine antioxidants in reclaimed rubber products
When choosing p-phenylenediamine antioxidants to delay aging in the production process of reclaimed rubber products, you can use certain p-phenylenediamine antioxidants alone, or use two or more p-phenylenediamine antioxidants in combination. The p-phenylenediamine antioxidant 2LLYY116 is used in conjunction with other types of antioxidants. For example, 4000 series antioxidants can have a synergistic effect with naphthylamine antioxidants or microcrystalline wax, and the aging resistance of reclaimed rubber is significantly improved.
3. The amount of p-phenylenediamine antioxidants in reclaimed rubber products
When using reclaimed rubber to produce rubber products, p-phenylenediamine antioxidants can be directly added to the rubber, and theoretically the amount can be controlled between 0.5-3 parts; in actual production, p-phenylenediamine antioxidants The amount of reclaimed rubber is mostly controlled between 1-2.5 parts.
4. Application range of p-phenylenediamine antioxidants in reclaimed rubber products
In actual production, latex reclaimed rubber, tire reclaimed rubber, butyl reclaimed rubber, and nitrile reclaimed rubber products can all use p-phenylenediamine antioxidants. P-phenylenediamine antioxidants can be widely used in dark rubber products such as tires, hoses, tapes, wires, cables, rubber rollers, etc. containing reclaimed rubber, especially reclaimed rubber products with high rubber content. 4010NA is the most widely used in reclaimed rubber products. For reclaimed rubber products that come in contact with water, 4020 is the most popular choice.
P-phenylenediamine antioxidants can effectively improve the aging resistance of the products in the production of reclaimed rubber products, especially the oxidation resistance and ozone resistance. Different types of p-phenylenediamine antioxidants have different dosages in reclaimed rubber products. The usage and dosage of the same p-phenylenediamine antioxidants in different types of reclaimed rubber products are different. There is a chance that the editor will contact you Discuss in detail the specific application of p-phenylenediamine antioxidants in various reclaimed rubber products.
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