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Shandong Landun Petroleum Resin Co., Ltd.
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Add:Guyun Industrial Park, Liaocheng City, Shandong Province

C9 petroleum resin knowledge

Influence of petroleum resin on the performance of reclaimed rubber

Time:2021-11-30

Petroleum resin has low acid value, good miscibility, moisture resistance, alcohol resistance, and chemical resistance. It has organic chemical reliability against strong acids and alkalis, has good heat resistance, can adjust viscosity, and is of high quality and low price. Used as a reinforcing tackifier in vulcanized rubber. As the most common type of vulcanized rubber, petroleum resin is also used to adjust the Mooney viscosity and physical properties of the reclaimed rubber. The most widely used petroleum resins today are C9 petroleum resin and C5 petroleum resin.

   In the production process of reclaimed rubber, the characteristics of reclaimed rubber will change with the change of the type and amount of petroleum resin. The key to this article is to discuss the harm of petroleum resin dosage on the characteristics of reclaimed rubber under 100 parts of pure reclaimed rubber.

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 1. Vulcanization characteristics of reclaimed rubber

   The consumption of petroleum resin is expanded, the embrittlement time of reclaimed rubber is increased, and the safety factor of production and processing becomes better; the positive vulcanization time of reclaimed rubber increases and then decreases with the increase in the amount of petroleum resin (generally, 3 parts of petroleum resin are used for 100 parts of reclaimed rubber Lower positive vulcanization time is the longest); C9 and C5 are used in the same amount, and the reclaimed rubber of C9 petroleum resin is used for vulcanization with high efficiency.

   2. Mooney viscosity of reclaimed rubber

   Increase in the amount of petroleum resin, reduce the Mooney viscosity of reclaimed rubber; C9 is the same as C5, the Mooney viscosity of C9 petroleum resin reclaimed rubber is lower than C5 petroleum resin reclaimed rubber (note: add one petroleum resin to 100 parts reclaimed rubber, reclaimed rubber door The viscosity is significantly reduced; when 5 parts of petroleum resin is added to 100 parts of reclaimed rubber, the Mooney viscosity of C9 and C5 petroleum resin reclaimed rubber is basically the same).

  3. Tensile strength of reclaimed rubber

   The tensile strength of reclaimed rubber decreases slightly with the increase in the amount of petroleum resin (100 parts of reclaimed rubber should be less than 3 parts of petroleum resin, the tensile strength will not change basically; when the amount of petroleum resin exceeds 3 parts, the reclaimed rubber will resist The tensile strength is slightly reduced).

Fourth, the elongation of reclaimed rubber at break

   As the amount of petroleum resin increases, the elongation at break of reclaimed rubber continues to expand (when the amount of petroleum resin used in 100 parts of reclaimed rubber is less than 3 parts, the change in elongation at break is not large; the amount of petroleum resin is the same, and C9 petroleum resin reclaimed rubber pulls Elongation at break exceeds C5 petroleum resin reclaimed rubber).

   5. Strength of reclaimed rubber

   The amount of petroleum resin continued to expand, and the strength of reclaimed rubber continued to decrease.

   The above is the content related to petroleum resin shared with everyone. It is hoped that based on the above content, everyone can have a better understanding and grasp of petroleum resin products.