News Details
Polyester resin powder coatings crosslinking agent
2017-3-18 17:37:38
Polyester resin powder coatings crosslinking agent,Powder coating and coating preparation
Polyester resin by 98.4 g and 98.4 g beta -HAA crosslinking agent, benzoin 0.4 g and 0.4 g powder flow ping agent system, its technological process is: ingredients, mixing, extrusion, crushing, sieving. Adopts electrostatic spraying (40 ~ 50 kv voltage, spray gun gas flow 4 ~ 5 m2 / h, the quantity of powder 3 ~ 18 kg/h) method to make the powder coating made by uniform adsorption in the surface of the substrate, respectively, in 155, 160, 155 and 160 ° C under crosslinking 5, 8, 10 and 14 min film (film thickness 60 ~ 90 microns), placed in the air is cooled to room temperature after testing coating performance.
Adopt - 850 Fourier transform infrared (FTIR) spectrometer (FT IR) analysis of resin structure, measurement range of 400 ~ 4000 cm? 1, the precision is 0.01 cm? 1. Take a small amount of polyester resin powder mixed with anhydrous potassium chloride grinding, then tablet sample preparation, through the map was made to verify the polyester resin absorption peak in structure design is in line with the expectations.
The crystallinity of the resin. Polyester resin grinding into fine powder, using X-ray diffractometer (XRD) analysis of the crystallization of resin, and use the method to calculate crystallinity peak.
Artificial accelerated aging resistance of coating. According to GB 5237.4-2008 "building aluminum shaped part 4: powder coating profiles, QUV/Spray uv accelerated aging test of coating artificial ageing weather resistance, the UVB - 313 fluorescent uv lamp, the wavelength of 310 nm, irradiation intensity of 0.71 W/m2, 60 ° C ultraviolet 4 h + 50 ° C condensation 4 h, 1000 h. In order to protect the light rate to characterize the weatherability of the coating. Using A - 4520 mirror gloss meter measuring 60 ° luster, light rate = (lustre before present test after test) x 100%. Using color difference meter measuring coating color contrast before and after artificial aging, coating color difference (L said brightness or darkness, a green or red, b blue or yellow).
The coating adhesion. Refer to GB/T 9286-9286 "paint and varnish film cross experiment" determination of coating is dry, wet and boiling water adhesion, use the blade cutting, spacing of 2 mm, form a grid pattern, tear after a sticky tape to 60 ° Angle, observe exfoliated.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Uses:
The product is identical to Ethancure 100 and Lonza DETDA 80, DETDA is very effective polyurethane elastomer chain extender; also be used as polyurethane and epoxy resin curing agent, epoxy resin of an antioxidant, industrial oils and lubricants . In addition, also as intermediates in organic synthesis.Especially for the RIM (reaction injection molding), is important in the field of spray polyurea chain extender species. Also can be used for casting polyurethane elastomer (CPU) and a curing agent, epoxy curing agent, epoxy resin of antioxidants, lubricants and industrial oils other antioxidants.
Indentation hardness. Refer to GB/T 9275-9275 "paint and varnish buchholz indentation test" with QHY buchholz indentation test instrument measuring indentation hardness, indentation hardness = 100 present indentation length.
Resistance to impact. Refer to the GB/T 1732-1993 the film impact resistance measurement, the CJQ - II impact tester determination of resistance to impact, heavy hammer quality is 1 kg, height 600 mm, heavy hammer not cause coating cracking or fall off as a qualified.
Stamping performance. According to GB/T 9753-2007 the paint and varnish cup drawing test with GBW - 50 cup drawing machine stamping test of coating performance, punch 20 mm diameter hemispherical, sag depth of 5 mm.
Salt tolerance of acid. Press GB5237.4-2008 with chemical pure hydrochloric acid (rho = 1.19 g/mL) and GB/T 6682-2008 "water analysis laboratory specifications and test method" regulation of triple water with hydrochloric acid solution (hydrochloric acid) [V: V (water) = 1:9], then 10 drops on the surface coating, cover them in petri dishes, under 18 ~ 27 ° C environment after 15 min, flush with water, dry after visual check the surface coating.
Solvent resistance. According to appendix B GB5237.4-2008 method to test the solvent resistance of coating: cotton swabs in xylene, according to the same route to and fro thirty times, after saturated with water cleaning, place 2 h after observing surface condition.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Polyester resin by 98.4 g and 98.4 g beta -HAA crosslinking agent, benzoin 0.4 g and 0.4 g powder flow ping agent system, its technological process is: ingredients, mixing, extrusion, crushing, sieving. Adopts electrostatic spraying (40 ~ 50 kv voltage, spray gun gas flow 4 ~ 5 m2 / h, the quantity of powder 3 ~ 18 kg/h) method to make the powder coating made by uniform adsorption in the surface of the substrate, respectively, in 155, 160, 155 and 160 ° C under crosslinking 5, 8, 10 and 14 min film (film thickness 60 ~ 90 microns), placed in the air is cooled to room temperature after testing coating performance.
Adopt - 850 Fourier transform infrared (FTIR) spectrometer (FT IR) analysis of resin structure, measurement range of 400 ~ 4000 cm? 1, the precision is 0.01 cm? 1. Take a small amount of polyester resin powder mixed with anhydrous potassium chloride grinding, then tablet sample preparation, through the map was made to verify the polyester resin absorption peak in structure design is in line with the expectations.
The crystallinity of the resin. Polyester resin grinding into fine powder, using X-ray diffractometer (XRD) analysis of the crystallization of resin, and use the method to calculate crystallinity peak.
Artificial accelerated aging resistance of coating. According to GB 5237.4-2008 "building aluminum shaped part 4: powder coating profiles, QUV/Spray uv accelerated aging test of coating artificial ageing weather resistance, the UVB - 313 fluorescent uv lamp, the wavelength of 310 nm, irradiation intensity of 0.71 W/m2, 60 ° C ultraviolet 4 h + 50 ° C condensation 4 h, 1000 h. In order to protect the light rate to characterize the weatherability of the coating. Using A - 4520 mirror gloss meter measuring 60 ° luster, light rate = (lustre before present test after test) x 100%. Using color difference meter measuring coating color contrast before and after artificial aging, coating color difference (L said brightness or darkness, a green or red, b blue or yellow).
The coating adhesion. Refer to GB/T 9286-9286 "paint and varnish film cross experiment" determination of coating is dry, wet and boiling water adhesion, use the blade cutting, spacing of 2 mm, form a grid pattern, tear after a sticky tape to 60 ° Angle, observe exfoliated.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Uses:
The product is identical to Ethancure 100 and Lonza DETDA 80, DETDA is very effective polyurethane elastomer chain extender; also be used as polyurethane and epoxy resin curing agent, epoxy resin of an antioxidant, industrial oils and lubricants . In addition, also as intermediates in organic synthesis.Especially for the RIM (reaction injection molding), is important in the field of spray polyurea chain extender species. Also can be used for casting polyurethane elastomer (CPU) and a curing agent, epoxy curing agent, epoxy resin of antioxidants, lubricants and industrial oils other antioxidants.
Indentation hardness. Refer to GB/T 9275-9275 "paint and varnish buchholz indentation test" with QHY buchholz indentation test instrument measuring indentation hardness, indentation hardness = 100 present indentation length.
Resistance to impact. Refer to the GB/T 1732-1993 the film impact resistance measurement, the CJQ - II impact tester determination of resistance to impact, heavy hammer quality is 1 kg, height 600 mm, heavy hammer not cause coating cracking or fall off as a qualified.
Stamping performance. According to GB/T 9753-2007 the paint and varnish cup drawing test with GBW - 50 cup drawing machine stamping test of coating performance, punch 20 mm diameter hemispherical, sag depth of 5 mm.
Salt tolerance of acid. Press GB5237.4-2008 with chemical pure hydrochloric acid (rho = 1.19 g/mL) and GB/T 6682-2008 "water analysis laboratory specifications and test method" regulation of triple water with hydrochloric acid solution (hydrochloric acid) [V: V (water) = 1:9], then 10 drops on the surface coating, cover them in petri dishes, under 18 ~ 27 ° C environment after 15 min, flush with water, dry after visual check the surface coating.
Solvent resistance. According to appendix B GB5237.4-2008 method to test the solvent resistance of coating: cotton swabs in xylene, according to the same route to and fro thirty times, after saturated with water cleaning, place 2 h after observing surface condition.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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