配方类型:

ELASTOMERS AND PLASTICS

配方说明:

Dipping Rubber Latex

配方组成:

Formaldehyde (40% sol'n.)/^b
Zinc Oxide (50% dispersion)/-
Formula No.
Polyvinyl Methyl Ether (10% sol'n.)/10.0
Zinc Diethyldithiocarbamate (50% dispersion)/1.0
Formaldehyde (40% sol'n.)/^a
Sulfur (50% dispersion)/2.0
Polyvinyl Methyl Ether (10% sol'n.)/10.0
Polyropylene Glycol (25% sol'n.)/-
Ammonium Acetate (20% sol'n.)/-
Polypropylene Glycol (25% sol'n.)/-
Nonionic Surfactant (low cloud pt., 20% sol'n.)/-
Gelation temp. ('C)/32
Min. storage life (wks@25'C)/1
Vulcanization/30 min @ 100'C
^b to pH 7.5-8.0
Natural Rubber Latex (LA type, 60%)/-
Ammonium Acetate (20% sol'n.)/-
Natural Rubber Latex (HA type, 60%)/-
Natural Rubber Latex (HA type, 60%)/167.0
Nonionic Surfactant (low cloud pt., 20% sol'n.)/-
"Texafor" FN3 (25%)/0.8
Formaldehyde (40% sol'n.)/-
Gelation temp. ('C)/32
Zinc Oxide (50% dispersion)/2.0
Zinc Oxide (50% dispersion)/3.0
Zinc Diethyldithiocarbamate (50% dispersio

配制方法:

Each mix should be prepared by adding the ingredients in the order listed in the formulation. Where the pH has to be reduced with formaldehyde (Formula Nos. 1 and 2 ), about 30 min should elapse after the formaldehyde addition before the remaining ingredients are incorporated.
A heat-sensitive mix is handled in the normal way, but as it is affected by heat it must be kept cool (12-25'C) to prevent premature gelation.
Certain mixes are also less stable to mechanical agitation than mixes used in coagulant dipping, and should not be strongly agitated for any length of time.