Glue Why is it called the "502"?
Time：2012-09-16 22:38:58 Hits：10214
Alpha
502 plastic structural formula: CH2 = C (CN)-COO-C2H5
Name: α-cyanalocacrylicresinadhesive
Principle: in the air, trace water catalyzed addition polymerization reaction occurs rapidly solidified will be sticky cement.
502 plastic main component is the α-cyano acrylate added tackifiers, stabilizers, flexibilizing agents, inhibiting agents, one-component instant cure synthesized through Production rapid adhesives commonly known. Instant fast curing, also known as cyanoacrylate, is one of the engineering adhesives. Bonding metal, rubber, glass, etc., are very suitable for temporarily bonding. Domestic grades are 501, 502, KH-501, KH-502, KH-501, 504,508, CAE-150.
Ethyl acrylate is an important chemical binders, a wide range of applications, generally exhibit liquid cyanoacrylate, ethyl room temperature, 502 different varieties of glue main difference in the side chain size, different additives will give the glue traits bring certain differences. Its essence is a colorless, transparent, low viscosity, not a flammable liquid, single component, solvent-free, slightly stimulate the taste, volatile, volatile gas with weak tear.
502 is an instantaneous super binder. Itself does not occur between and host dissolution effect, but rather rely on the biasing force between the formation of ethyl acrylate with the host in the curing process to form a solid stick and effects. 502 glue curing procedure requires heat exchange, the better the heat exchange conditions, the faster the curing, this is the the adhesive good thermal conductivity of metal is faster than the adhesive plastic, while a thin layer of glue is also done than a drop of glue much faster.
