FIRST RUBBER
Factors of vulcanization of chlorobutyl rubber stopper
Published:
Dec 09,2022
Classification:
1. The first factor affecting the vulcanization process of chlorobutyl rubber stopper: vulcanization temperature
The vulcanization temperature of chlorobutyl rubber stopper is the basic condition for the vulcanization reaction of rubber, which directly affects the vulcanization speed of rubber and the quality of products. Like all chemical reactions, the vulcanization reaction speeds up as the temperature increases, and more low-sulfur cross-links are easy to form; when the vulcanization temperature is low, the speed is slow, the formation efficiency is low, and more polysulfur cross-links are formed. The vulcanization temperature generally applies Van't Hoff's law, that is, every time the temperature rises by 8~10 (approximately equivalent to the steam pressure of a gauge pressure), the reaction speed will approximately double; or in other words, the reaction time will approximately decrease by half.
2. The second factor affecting the vulcanization process of chlorobutyl rubber stopper: vulcanization pressure
The vulcanization pressure of chlorobutyl rubber stopper is an important factor to ensure the geometric size, structural density and physical machinery of rubber parts, and it can also ensure that the surface of parts is smooth and defect-free, meeting the sealing requirements of chlorobutyl rubber stopper.
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