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ChinaLatex additivesIntegrated supplier
MajorSolar Energy EVA Rubber mould assistantsupplier
Advisory Service Hotline
86-021-61317011
address：No. 210, Longchang Road, Yangpu District, Shanghai,China
Tel：86-021-61317011
fax：86-021-65378681
mobile：13917881220 17701607391 (rubber additive) 18616710227 (plastic additives)
Zip code：200080
contacts：Miss Shen Mr wang Mr Zhou
E-mail:dm@shdunmei.com
Entry Shanghai Dayton more than a year, from the original ignorant of
the chemical industry, to a smattering of knowledge, to understand, to a
certain product is now relatively proficient, this road is very long,
in order to achieve a an industry truly professional, proficient, it may
take years, decades or even a lifetime, the United States today than
Haydn vulcanization accelerator, for example, in the choice of the
vulcanization accelerator, how to find the ideal accelerator.
Classification accelerator varied, but in daily chemical applications,
accelerant classification of commonly used classification chemical
structure similar to the structure of the agent to act to promote
similar. According to the chemical structure classification can be
divided into: thiazole, sulfenamide, thiuram disulfide amino gallates,
guanidines, thioureas, xanthan acids and aldehydes amines.
Ideal promoter should have the following characteristics:
1, scorch long time, that is before the vulcanization process safe.
Above accelerator TMTM Haydn beauty class, TMTM natural rubber and
synthetic rubber promoting agent, curing temperature is 121 degrees,
excellent scorch resistance.
2, curing time is short, requiring vulcanization started fast, high
production efficiency. Haydn accelerator DM more than the United States,
for example, natural rubber, reclaimed rubber for general-purpose
accelerator. Its high critical temperature curing (130 ℃), the
temperature increase in the activity of more than 140 ℃, a significant
aftereffect.
3, curing curve flat, the flat long curing time, non-sulfide reduction.
Thiazole vulcanization accelerator curve of a certain flatness, such as
the United States and Haydn accelerator D, accelerator DM.
4, non-toxic, non-polluting. Such as Shanghai to promote the accelerator TMTM agent of Dayton, accelerator TRA and the like.
In practice, the vulcanization accelerator and other auxiliary systems
join rubber, vulcanized before mixing, extrusion process and a series of
coke should absolutely not happen, in the curing process should be as
far as possible in the short time to finish off a cross-linked. In
addition, regardless of how long to extend the cure time, the physical
properties of vulcanized rubber should not be lowered. But has yet to
find the accelerator all the varieties meet the above conditions, only
sulfenamide accelerators ideal.
