Butyl reclaimed rubber instead of butyl rubber can produce a variety of high-airtight rubber products, shock-absorbing products, anti-corrosion lining, etc. Many butyl rubber products need to work under high temperature conditions for a long time to improve the pulling of the rubber under high temperature conditions. The tensile strength can significantly improve the performance and service life of the butyl reclaimed rubber product. Therefore, how to improve the high temperature tensile strength of butyl reclaimed rubber products has become a long-term exploration problem for many rubber products manufacturers. Xiaobian today shares with you two, welcome to correct me!
1. Use with the right amount of EPDM rubber
In the rubber product formulation with butyl reclaimed rubber as the main raw material, the tensile strength of the butyl rubber can be improved by using an appropriate amount of butyl rubber, and the heat resistance of the butyl reclaimed rubber and the butyl rubber is good. However, if rubber products need to be used under high temperature conditions for a long time and maintain high tensile strength, they need to be discussed separately.
EPDM rubber is a copolymer of ethylene, propylene and a small amount of non-conjugated diene. In the internal structure of EPDM, ethylene is ordered to form unique high-temperature crystallization properties (some crystals undergo various crystal structures after temperature exceeds 75 °C). The change) can give the rubber a better high temperature tensile strength; therefore, the butyl regeneration can be improved to some extent by using an appropriate amount of EPDM rubber or EPDM reclaimed rubber in the formulation of the butyl reclaimed rubber product. The high temperature tensile strength of rubber products; when it comes to this, Xiaobian said: The original use of EPDM rubber / reclaimed rubber in the butyl inner tube is not only to relieve the aging of the inner tube to become soft and sticky, prolong the aging time. !
2. Filling precipitation method white carbon black
White carbon black is an alternative to carbon black products used as a reinforcing agent in light-colored rubber products. It has good high temperature resistance. The precipitated white carbon black does not decompose under high temperature conditions, which can significantly improve the mechanical strength of recycled rubber products. And the tear resistance, tensile strength is one of them; therefore, filling a certain amount of precipitated silica in the production formula of the butyl reclaimed rubber product can also significantly improve the high temperature tensile strength of the butyl reclaimed rubber product.
When using butyl reclaimed rubber to produce rubber products, the butyl rubber can be given a higher tensile strength at room temperature through a reasonable blending system, but the butyl reclaimed rubber products must be kept at a high temperature for a long time. Stretching strength, to meet the special needs of customers, it is necessary to discuss the friends of the majority of rubber products manufacturers! Do you have any good ideas?