Epoxy anti-corrosion powder liquid coating and preparing method of epoxy anti-corrosion powder liquid coating
A liquid coating and powder coating technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve problems such as heating and melting curing, improve adhesion and flexibility, simple coating process, and reduce production. cost effect
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Embodiment 1
[0013] Example 1. First, put 100kg of modified epoxy anticorrosion powder coating and 140kg of ketone solvent into the dissolving tank, mix and stir for 5 minutes, soak and dissolve for 20 minutes, stir for 10 minutes, then add 2.0kg of surface finishing agent methyl silicone oil, phthalate Dibutyl formate 2.0kg, ethylenediamine 0.6kg were mixed and stirred for 10 minutes, then dispersed and stirred at a high speed for 10 minutes, and after filtration, the finished epoxy anti-corrosion powder liquid coating was obtained. Viscosity detection: 26s; test results of painting samples: curing time: surface dry time (room temperature) 20min, hard drying time (room temperature) 48h; coating surface is smooth, uniform in color, no bubbles and no shrinkage cavities; adhesion: level 1; 10J impact: no pinhole; 24h cathodic disbondment: 3.0mm; 3°bending resistance: no crack. Meet the quality requirements.
Embodiment 2
[0014] Example 2, first put 100kg of modified epoxy anti-corrosion powder coating and 150kg of ketone solvent into the dissolving tank, mix and stir for 5min, soak and dissolve for 20min, stir for 10min, then add surface finishing agent methyl silicone oil 2kg, phthalic acid 2kg of dibutyl ester and 0.3kg of ethylenediamine were mixed and stirred for 10 minutes, then dispersed and stirred at a high speed for 10 minutes, and after filtration, it was W1-01 epoxy anti-corrosion powder liquid coating. Viscosity detection: 31s; Smear test results: Curing time: surface dry time (room temperature) 50min, hard drying time (room temperature) 56h; coating appearance: smooth surface, uniform color, no bubbles and no shrinkage cavity; adhesion: level 1 ; 10J impact resistance: no pinholes; 24h cathodic disbondment: 5.0mm; 3°bending resistance: no cracks. The surface of the coating is soft and does not meet the quality requirements.
Embodiment 3
[0015] Example 3, first put 100kg of modified epoxy anticorrosion powder coatings and 160 ketone solvents into the dissolving tank, mix and stir for 5 minutes, soak and dissolve for 20 minutes, stir for 10 minutes, then add 4kg of surface finishing agent methyl silicone oil, phthalic acid 4kg of dioctyl ester, 1.0kg of hexamethylenediamine were mixed and stirred for 10 minutes, then dispersed and stirred at high speed for 10 minutes. After filtering, it was W1-01 epoxy anti-corrosion powder liquid coating. Viscosity detection: 21s; test results of painted samples: curing time: surface dry time (room temperature) 14min, hard drying time (room temperature) 46h; coating appearance: smooth surface, uniform color, no bubbles and no shrinkage cavities; adhesion: level 1 ; 10J impact resistance: cracks; 24h cathodic disbondment: 3.0mm; 3°bending resistance: cracks. Does not meet quality requirements.
[0016] Coating and curing anti-corrosion at room temperature, anti-corrosion coat...
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