Powder coating for magnesium alloy
A technology of powder coatings and materials, applied in the direction of powder coatings, polyester coatings, anti-corrosion coatings, etc., can solve the problems of shrinkage cavity adhesion, bad, air bubbles, etc., and achieve the effect of solving air bubbles
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Embodiment 1
[0037] A powder coating for magnesium alloys, in terms of mass fraction, comprising the following components: 60% modified polyester resin; 4.6% curing agent TGIC (triglycidyl isocyanurate); 27.2% modified barium sulfate; 1.0% Leveling agent GLP588; 0.6% brightener 701B; benzoin 0.3%; 0.3% catalytic accelerator ethyl triphenylphosphine bromide; BYK961 1.0%; 4.2% pigment; 0.8% auxiliary;
[0038] The pigments in this embodiment include 3.0% titanium dioxide; 0.5% phthalocyanine blue; 0.7% iron yellow;
[0039] The adjuvants in this embodiment include 0.5% antioxidant 626; 0.3% ultraviolet absorber.
[0040] In this embodiment, the modified polyester resin includes 0.6% of the modified polyester resin by mass of polyether-modified organosiloxane and 0.5% of graphene by the mass of the modified polyester resin. The preparation method of the modified polyester resin is as follows: according to the conventional polyester resin preparation process, after esterification reaction and...
Embodiment 2
[0048] A powder coating for magnesium alloys, comprising the following components according to mass fraction: 65% modified polyester resin; 3.5% curing agent β-hydroxyalkylamide; 26.8% modified calcium carbonate; 1.0% leveling agent GLP588; 0.7% % Brightener 701B; Benzoin 0.4%; 0.6% BYK961; 1.0% Pigment; 1.0% Auxiliary;
[0049] The pigment in this embodiment is carbon black;
[0050] The auxiliary agents in this embodiment include 0.5% ultraviolet absorber and 0.5% wax powder.
[0051] In this embodiment, the modified polyester resin comprises polyether-modified organosiloxane and 0.2% of graphene by weight of the modified polyester resin. The preparation method of the modified polyester resin is as follows: according to the conventional polyester resin preparation process, after esterification reaction and polycondensation reaction, the required 3% polyether modified organosiloxane and 0.2% graphite are added into the reaction kettle. ene. After heating, stirring, distill...
Embodiment 3
[0059] A powder coating for magnesium alloys comprises the following components according to mass fraction: 50% modified polyester resin; 3.8% curing agent TGIC; 41% modified matting barium sulfate; 0.4% sand texture agent; 0.2% curing accelerator; 3.4% Pigment; 1.2% Auxiliary;
[0060] The pigment in this embodiment is carbon black;
[0061] The additives in this example include 0.5% antioxidant, 0.3% ultraviolet absorber and 0.4% wax powder.
[0062] In this embodiment, the modified polyester resin includes 1.5% of the modified polyester resin by mass of polyether-modified organosiloxane and 0.3% of graphene by the mass of the modified polyester resin. The preparation method of the modified polyester resin is as follows: according to the conventional polyester resin preparation process, after esterification reaction and polycondensation reaction, the required 1.5% polyether modified organosiloxane and 0.3% graphite are added into the reaction kettle. ene. After heating, s...
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Abstract
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