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The effect of epoxy powder coating crosslinking agent on product performance
2017-9-4 12:14:36
The effect of epoxy powder coating crosslinking agent on product performance
The crosslinking temperature was 130 degrees centigrade, and the effect of crosslinking agent dosage (relative to the percentage of epoxy resin dosage) on the crosslinking performance of epoxy powder coatings was investigated.
The effect of crosslinking agent on the performance of the product was found that the physical mechanical properties of the crosslinking membrane increased with the increase of crosslinking agent in the amount of the crosslinking agent was less than 11%. However, the physical mechanical properties of the crosslinking membrane decreased when the dosage of crosslinking agent was over 11%.
The effect of crosslinking agent on product performance is due to the use of resin and crosslinking agent at 100 # 11 (mass ratio). Resin and crosslinking agent can form an ideal network structure. Therefore, the optimal crosslinking dose is 11 %.
The effect of crosslinking temperature on crosslinking time. The effect of crosslinking temperature on the crosslinking time of epoxy powder coating was investigated by 11% (relative to the percentage of resin dosage).
With the increase of crosslinking temperature, the time required for the crosslinking of epoxy powder coating gradually decreases, but when the temperature rises to 150 degrees, the time for crosslinking is increased. As we continue to heat up, the time for crosslinking increases. At 140 degrees Celsius, the reaction activity of epoxy base and organic urea crosslinking agent was the highest.
As the crosslinking temperature increases, the reaction activity decreases gradually. Improved production technology has increased the reaction of epoxy resins and crosslinking agent contact area, improved the activity of powder coating, can make the powder coating 8 min at 130 degrees Celsius and 140 degrees Celsius for 4 min completely crosslinking, more suitable for industrial production.
The coating has good hardness, adhesion and flexibility, which can meet the requirements of industrial production.
Chinese name: Diethyl toluene diamine(DETDA)
The crosslinking temperature was 130 degrees centigrade, and the effect of crosslinking agent dosage (relative to the percentage of epoxy resin dosage) on the crosslinking performance of epoxy powder coatings was investigated.
The effect of crosslinking agent on the performance of the product was found that the physical mechanical properties of the crosslinking membrane increased with the increase of crosslinking agent in the amount of the crosslinking agent was less than 11%. However, the physical mechanical properties of the crosslinking membrane decreased when the dosage of crosslinking agent was over 11%.
The effect of crosslinking agent on product performance is due to the use of resin and crosslinking agent at 100 # 11 (mass ratio). Resin and crosslinking agent can form an ideal network structure. Therefore, the optimal crosslinking dose is 11 %.
The effect of crosslinking temperature on crosslinking time. The effect of crosslinking temperature on the crosslinking time of epoxy powder coating was investigated by 11% (relative to the percentage of resin dosage).
With the increase of crosslinking temperature, the time required for the crosslinking of epoxy powder coating gradually decreases, but when the temperature rises to 150 degrees, the time for crosslinking is increased. As we continue to heat up, the time for crosslinking increases. At 140 degrees Celsius, the reaction activity of epoxy base and organic urea crosslinking agent was the highest.
As the crosslinking temperature increases, the reaction activity decreases gradually. Improved production technology has increased the reaction of epoxy resins and crosslinking agent contact area, improved the activity of powder coating, can make the powder coating 8 min at 130 degrees Celsius and 140 degrees Celsius for 4 min completely crosslinking, more suitable for industrial production.
The coating has good hardness, adhesion and flexibility, which can meet the requirements of industrial production.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine packingļ¼ net weight 200KG/ galvanized iron drum (a small cabinet pallet loaded 16 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).
Chemical resistance of coatings. According to GB/T9274? 88, GB/T1734? In accordance with the regulations, the cross-membrane sample was immersed in 18% HCl solution, 20% NaOH solution, saturated K2Cr2O7 solution, acetone, toluene, olive oil and other reagents, and examined the chemical properties of the crosslinking membrane. The experiment shows that the coating has no change, indicating that the use of urea-type crosslinking agent to crosslinking epoxy powder coating has good chemical resistance and can meet the requirements of industrial production.
Selection of filler. Light calcium carbonate, precipitated barium sulfate, talcum powder, such as epoxy powder coating can be used as a filler, in addition to have certain influence, stability, heat resistance, hardness, its main function is to reduce costs; But adding too much filler reduces the physical mechanical properties of the paint.
In this experiment, 46% (relative to the percentage of resin dosage) precipitated barium sulfate with good effect.
Optimal formulation of epoxy powder coatings. The crosslinking temperature is 130 degrees centigrade. After a large number of experiments, the optimal formula can be obtained by detecting various properties while realizing fast crosslinking.
The kinetic model of C301 / p-al2o3 bifunctional catalyst can be described as the dynamic behavior of the dimethyl ether.
Using C301 / P - Al2O3 as bifunctional catalyst, and the catalyst activity in the stable period, in the CO/H2 = 1.325, temperature 210 ~ 300 degrees Celsius, 2 ~ 4.3 MPa pressure, space velocity, 600 ~ 1800 ml/g (h % catalyst) conditions, obtained the carbon-rich syngas Intrinsic kinetics equation of preparing dimethyl ether and methanol synthesis r1 = k1PCOPH2 (1, 1) (1 + + KCO2PCO2 KCOPCO) (1 + K0.5 H2P0. 5 H2 + KWPW); Methanol dehydration r2 = k2P1. 5 M (1-2) (1 + K0.5 MP0.5 M + KH2OPH2O) 2; Water vapor transformation r3 = k3PCOPW (1-3) (1 + KCOPCO + KCO2PCO2) (1 + P0.5 H2K0. 5 H2 + PWKW).
By carbon-rich syngas in C301 / P - Al2O3 catalyst in preparing dimethyl ether dynamics research, for methanol synthesis and methanol dehydration and water vapor transformation of three independent reaction apparent activation energy were 88.43, 42.56 and 11.92 kJ/mol.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Chemical resistance of coatings. According to GB/T9274? 88, GB/T1734? In accordance with the regulations, the cross-membrane sample was immersed in 18% HCl solution, 20% NaOH solution, saturated K2Cr2O7 solution, acetone, toluene, olive oil and other reagents, and examined the chemical properties of the crosslinking membrane. The experiment shows that the coating has no change, indicating that the use of urea-type crosslinking agent to crosslinking epoxy powder coating has good chemical resistance and can meet the requirements of industrial production.
Selection of filler. Light calcium carbonate, precipitated barium sulfate, talcum powder, such as epoxy powder coating can be used as a filler, in addition to have certain influence, stability, heat resistance, hardness, its main function is to reduce costs; But adding too much filler reduces the physical mechanical properties of the paint.
In this experiment, 46% (relative to the percentage of resin dosage) precipitated barium sulfate with good effect.
Optimal formulation of epoxy powder coatings. The crosslinking temperature is 130 degrees centigrade. After a large number of experiments, the optimal formula can be obtained by detecting various properties while realizing fast crosslinking.
The kinetic model of C301 / p-al2o3 bifunctional catalyst can be described as the dynamic behavior of the dimethyl ether.
Using C301 / P - Al2O3 as bifunctional catalyst, and the catalyst activity in the stable period, in the CO/H2 = 1.325, temperature 210 ~ 300 degrees Celsius, 2 ~ 4.3 MPa pressure, space velocity, 600 ~ 1800 ml/g (h % catalyst) conditions, obtained the carbon-rich syngas Intrinsic kinetics equation of preparing dimethyl ether and methanol synthesis r1 = k1PCOPH2 (1, 1) (1 + + KCO2PCO2 KCOPCO) (1 + K0.5 H2P0. 5 H2 + KWPW); Methanol dehydration r2 = k2P1. 5 M (1-2) (1 + K0.5 MP0.5 M + KH2OPH2O) 2; Water vapor transformation r3 = k3PCOPW (1-3) (1 + KCOPCO + KCO2PCO2) (1 + P0.5 H2K0. 5 H2 + PWKW).
By carbon-rich syngas in C301 / P - Al2O3 catalyst in preparing dimethyl ether dynamics research, for methanol synthesis and methanol dehydration and water vapor transformation of three independent reaction apparent activation energy were 88.43, 42.56 and 11.92 kJ/mol.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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