Classification of Rubber Accelerators
2012-09-09
The classification methods of commonly used rubber accelerators are as follows:
(1) Classification by the structure of rubber accelerators
According to the chemical structure of rubber accelerators, they can be divided into eight categories: thiazoles (M, DM), sulfenamides (CZ, NOBS, DZ), thiuram (TMTD, TMTM), thioureas (NA-22), dithiocarbamates (ZDMC, ZDC), aldehyde amines (H), guanidines (D), and xanthates (ZIX).
(2) Classification by pH value
Rubber accelerators are classified into acidic, alkaline, and neutral accelerators based on whether they are acidic, basic, or neutral.
Acidic accelerators: thiazoles, thiuram, dithiocarbamates, xanthates.
Neutral accelerators: sulfenamides, thioureas.
Alkaline accelerators: guanidines, aldehyde amines.
(3) Classification by the acceleration speed of rubber accelerators
Internationally, the acceleration speed of rubber accelerator M for NR is used as a standard to compare the acceleration speeds of other accelerators. Those faster than M are classified as super-fast or ultra-fast, while those slower than M are classified as slow or medium speed.
Slow speed accelerators: H, NA-22
Medium speed accelerators: D
Standard speed accelerators: M, DM, CZ, DZ, NOBS
Super-fast accelerators: TMTD, TMTM
Ultra-fast accelerators: ZDMC, ZDC
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