The invnetino discloses a method for preparing high performance carboxylic
acrylonitrile butadiene rubber latexes. The carboxylic
acrylonitrile butadiene rubber latexes use an
emulsion polymerization process which uses
styrene-butadiene latexes as seeds, are dropped with a part of monomers, use butadiene and
acrylonitrile as main monomers, use unsaturated
carboxylate and are assisted by multi-functional monomers such as multiple
double bond crosslinking monomers, and use a complex emulsifier
system which is reactive emulsifiers and less anionic emulsifiers when polymerizing, wherein
persulfate is an initiator,
alkyl sulfhydryl is a molecular weight
regulator and other assistants, the
reaction temperature is 40-60 DEG C, and the conversion rate is above 98%. Raw materials which are dropped during the production process of the high performance carboxylic acrylonitrile butadiene rubber latexes are dispersed by adopting an ultrasonic
homogenizer or a
high pressure homogenizer, thereby forming 50-500nm steady
miniemulsion, and then being dropped into a reaction kettle. The carboxylic acrylonitrile butadiene rubber latexes which is prepared through the method for preparing the high performance carboxylic acrylonitrile butadiene rubber latexes is 100-120nm in particle size, is excellent in mobility, moderate in
viscosity, excellent in
mechanical stability and
chemical stability, greatly improves
toughness and
bonding strength, and is particularly suitable to soak gloves,
surgical gloves and wear-resistant materials and the like.