Low-temperature quick-drying solvent-free epoxy coating for drinking water tank and preparation method thereof
An epoxy coating, solvent-free technology, applied in the field of coating manufacturing, can solve the problems of slow reaction speed, long hardening time, difficult to adapt to the requirements of coating process, etc., and achieve the effect of fast drying speed
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[0044] Example 1:
[0045] 1) Preparation of epoxy component: Put 25 parts by weight of small molecule bisphenol F epoxy resin (GY282), 9 parts by weight of reactive diluent (HELOXY modifier 65), and 0.5 parts by weight of dispersant ( SOLSPERS37500), 1.0 parts by weight of silane coupling agent (KBM-403), 0.5 parts by weight of defoamer (AC-300), start stirring, and add the following components separately under the condition of starting the stirring: 4 parts by weight of thixotropic agent ( VA-750B), 7 parts by weight of titanium dioxide (R-930), 53 parts by weight of low oil absorption talcum powder, dispersed at high speed for 30 minutes, then grind to standard fineness with sand mill or three-roll mill, filter and package into paint A component.
[0046] 2) Put 95 parts by weight of the commercially available modified aromatic amine curing agent Aradur 847 and 5 parts by weight of K-54 into the dispersion kettle and mix them evenly, then pack them into small buckets according ...
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[0055] Example 2:
[0056] 3) Preparation of epoxy component: Put 22 parts by weight of small molecule bisphenol F epoxy resin (GY282), 11 parts by weight of reactive diluent (HELOXY modifier 65), and 0.6 parts by weight of dispersant ( SOLSPERS37500), 0.9 parts by weight of silane coupling agent (KBM-403), 0.4 parts by weight of defoaming agent (AC-300), start to stir evenly, and add the following components separately under the condition of starting the stirring: 5 parts by weight of thixotropic agent ( VA-750B), 7.5 parts by weight of titanium dioxide (R-930), 51.6 parts by weight of low oil absorption talcum powder, dispersed at high speed for 30 minutes, and then ground to standard fineness with a sand mill or three-roll mill, filtered and packaged to become paint A component.
[0057] 4) Put 95 parts by weight of the commercially available modified aromatic amine curing agent Aradur 847 and 5 parts by weight of K-54 into the dispersion kettle and mix them evenly, and then pa...
Example Embodiment
[0059] Example 3:
[0060] 5) Preparation of epoxy component: Put 20 parts by weight of small molecule bisphenol F epoxy resin (GY282), 14 parts by weight of reactive diluent (HELOXY modifier 65), and 0.7 parts by weight of dispersant ( SOLSPERS37500), 1.1 parts by weight of silane coupling agent (KBM-403), 0.2 parts by weight of defoaming agent (AC-300), start to stir evenly, and add the following components separately when stirring is started: 6 parts by weight of thixotropic agent ( VA-750B), 8 parts by weight of titanium dioxide (R-930), 50 parts by weight of low oil absorption talcum powder, dispersed at high speed for 30 minutes, and then ground to standard fineness with a sand mill or three-roll mill, filtered and packed into paint A component.
[0061] 6) Put 95 parts by weight of the commercially available modified aromatic amine curing agent Aradur 847 and 5 parts by weight of K-54 into the dispersion kettle and mix them evenly, then pack them into small buckets and pack...
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