Recently, some customers said that the use of tires produced by our plant reclaimed rubber products appear blue phenomenon, ask whether the quality of reclaimed rubber is a problem. Technical staff to listen to the patient after the answer: In fact, not only tire reclaimed rubber, including all rubber products in the production of blue spray may occur during the blue, the main reason is that rubber processing materials, vulcanization improper acid caused by excessive , So from the following five aspects to prevent:
1, softener, any rubber products are inseparable from the production of softener, rubber tires in order to improve product processing technology to ensure that all kinds of complexing agent in the tire reclaimed rubber evenly dispersed, the softener is essential. However, the use of tire reclaimed rubber production rubber products, if the softener used before mixing has been oxidized, it will cause reclaimed rubber products blue phenomenon; the same time, if your tire reclaimed rubber products are selected aromatic softening oil, Excessive dosage can also cause the indicator surface to spray blue. Therefore, to prevent the tire reclaimed rubber products blue spray, the quality of the softener and add the amount to pay more attention.
2. Carbon black and carbon black are the most widely used reinforcing fillers in the rubber products industry. They are carbonaceous substances (coal, natural gas, heavy oil, fuel oil, etc.) that are incompletely burnt or decomposed under the condition of insufficient air The resulting product, carbon black products in the production process if the macrocarbon aromatic hydrocarbons are not fully burned, the same will lead to tire reclaimed rubber products blue. Therefore, recycled rubber products manufacturers in the purchase of carbon black products to be carefully distinguished.
3, Antioxidant: Antioxidant used in rubber products can delay the aging of rubber and prolong the service life of rubber chemicals. Tire recycled rubber products should be added according to factors such as product type, product color, product use and recycled rubber proportion Antioxidant, improve tire performance and service life of reclaimed rubber products. However, anti-aging agent must be suitable for use, the right amount, or excessive dosage of anti-aging agent will result in reclaimed rubber products blue.
4, vulcanization temperature: tire reclaimed rubber products throughout the production process, vulcanization of this process has a significant impact on product performance; vulcanization temperature vulcanization can cause excessive tire spray rubber products blue; therefore, tire reclaimed rubber products curing system vulcanization temperature , The vulcanization time should be designed by an experienced part of the project to be completed, and to be tested several times, if conditions permit the best use of low-temperature vulcanization, the process of strict control of the vulcanization temperature, to avoid vulcanization temperature caused by the surface of recycled rubber products Spray blue.
5, uneven mixing: tire reclaimed rubber and other rubber used in combination with chemical additives after mixing uneven lead to a high concentration of certain excipients will also result in reclaimed rubber products sprayed blue. Rubber tire recycling products caused by uneven mixing for many reasons, such as powdered compound with the group, we will not discuss one by one. Therefore, the reclaimed rubber products in the production must be strictly in accordance with the procedures set to be implemented to reduce tire reclaimed rubber mixed products caused by uneven spray blue occurrence of the problem.
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