News Details
A high build epoxy heavy-duty coating with crosslinking agent
2017-3-28 11:23:20
A high build epoxy heavy-duty coating with crosslinking agent,A high build epoxy heavy-duty coating type the full name of two-component thick slurry can be coated with epoxy anticorrosive paint. It is a high solids, floor coating combination, can make the coating or paint dry film thickness of the delta acuity 0.25 mm, usually for a light black.
Good low temperature crosslinking, the highest heat 120 ℃ dry heat, corrosion resistance; Acid, alkali, salt; Wear resistance, etc. Used in high temperature water, clear water and crude oil and various kinds of oil storage tank and pipeline corrosion. Such as: marina two head of removing oil terminal 140 m3 tank outer wall, underground tank bottom insulation outer wall of pipeline and so on all use this paint.
The paint used in the problems and solutions
1, the paint peeling off: it could be because of the surface is too smooth, if the coating is a light paint or powder (plus untreated paste coating), new paint on the surface is not firm. Or may be a rusty spot decayed wood or metal, there are also was peeling paint quality is bad. A small area of the paint peeling, can use sand paper burnish, then wipe on be bored with child, brush on priming paint, go up afresh again lacquer. The loss must be all the paint stripping of large area, besmear again.
2, air bubble, needle: not completely volatile solvent in the coating, the surface is dry, the surface is volatile, summit if bursting needle, if heavily silted for bubbles. Therefore:
(1) if the table dry too fast, when residual air bubbles in the paint, crosslinking agent and water reaction product carbon dioxide to run away;
(2) one-time thick coating; Layer between the interval time is not enough;
(3) the construction temperature is too high, resulting in table dry too fast, crosslinking agent and water reaction too much produce excess carbon dioxide;
(4) coatings (including diluent) or by coating the surface moisture content is too high, the environment temperature is too high, can lead to the side effects of crosslinking agent and water to produce large amounts of carbon dioxide bubbles;
(5) crosslinking agent amount too much, especially more bubbles under high temperature
Chinese name: Diethyl toluene diamine(DETDA)
Physical and chemical properties: light yellow transparent liquid, slightly soluble in water, soluble in alcohols, ethers, ketones and other polar organic solvents, and polyether, polyester polyol compatibility.
Density 1.022
Viscosity (20 ℃) ??mPa·ss290±10
Pour Point ℃-9
Boiling point of310°C
Flash Point°C161.1°C
Prevention and control, and the solution:
(1) to adjust the solvent evaporation rate, appropriate to add slow drying solvent, such as cyclohexanone, CAC, etc; Paint mixing, let stand for about 20 minutes, stir to evaporate into the air in the process of;
(2) a not thick coating; Each spraying interval time not too short;
(3) control the temperature of the spray room and dry room, such as the burning hot summer, appropriate chooses the temperature is lower in the morning or evening coating; Avoid direct sunlight, etc., are sometimes painted a fresh from the hot sun into painting room, the coated objects are high temperature, should be placed after cooling to room temperature for a period of time for painting;
(4) avoid temperature too high temperature environment construction, especially of polishing after the water after being fully dry by coating the surface moisture; Summer sweating heavily, avoid to touch the coated before spraying;
(5) the correct ratio of crosslinking agent, in high temperature and high humidity season, slightly lower ratio of crosslinking agent.
3, appear crack: most of this kind of circumstance wants chemically to divide lacquer agent or sirocco spray gun to remove paint, go up afresh again lacquer. If rupture range is not big, then can use sand milling piece or dry wet amphibious sand paper to touch water, the paint that abrasion ruptures, it is after exterior burnish is smooth, wipe on be bored with child, brush on priming paint, go up afresh again lacquer.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Good low temperature crosslinking, the highest heat 120 ℃ dry heat, corrosion resistance; Acid, alkali, salt; Wear resistance, etc. Used in high temperature water, clear water and crude oil and various kinds of oil storage tank and pipeline corrosion. Such as: marina two head of removing oil terminal 140 m3 tank outer wall, underground tank bottom insulation outer wall of pipeline and so on all use this paint.
The paint used in the problems and solutions
1, the paint peeling off: it could be because of the surface is too smooth, if the coating is a light paint or powder (plus untreated paste coating), new paint on the surface is not firm. Or may be a rusty spot decayed wood or metal, there are also was peeling paint quality is bad. A small area of the paint peeling, can use sand paper burnish, then wipe on be bored with child, brush on priming paint, go up afresh again lacquer. The loss must be all the paint stripping of large area, besmear again.
2, air bubble, needle: not completely volatile solvent in the coating, the surface is dry, the surface is volatile, summit if bursting needle, if heavily silted for bubbles. Therefore:
(1) if the table dry too fast, when residual air bubbles in the paint, crosslinking agent and water reaction product carbon dioxide to run away;
(2) one-time thick coating; Layer between the interval time is not enough;
(3) the construction temperature is too high, resulting in table dry too fast, crosslinking agent and water reaction too much produce excess carbon dioxide;
(4) coatings (including diluent) or by coating the surface moisture content is too high, the environment temperature is too high, can lead to the side effects of crosslinking agent and water to produce large amounts of carbon dioxide bubbles;
(5) crosslinking agent amount too much, especially more bubbles under high temperature
Chinese name: Diethyl toluene diamine(DETDA)
Physical and chemical properties: light yellow transparent liquid, slightly soluble in water, soluble in alcohols, ethers, ketones and other polar organic solvents, and polyether, polyester polyol compatibility.
Density 1.022
Viscosity (20 ℃) ??mPa·ss290±10
Pour Point ℃-9
Boiling point of310°C
Flash Point°C161.1°C
Prevention and control, and the solution:
(1) to adjust the solvent evaporation rate, appropriate to add slow drying solvent, such as cyclohexanone, CAC, etc; Paint mixing, let stand for about 20 minutes, stir to evaporate into the air in the process of;
(2) a not thick coating; Each spraying interval time not too short;
(3) control the temperature of the spray room and dry room, such as the burning hot summer, appropriate chooses the temperature is lower in the morning or evening coating; Avoid direct sunlight, etc., are sometimes painted a fresh from the hot sun into painting room, the coated objects are high temperature, should be placed after cooling to room temperature for a period of time for painting;
(4) avoid temperature too high temperature environment construction, especially of polishing after the water after being fully dry by coating the surface moisture; Summer sweating heavily, avoid to touch the coated before spraying;
(5) the correct ratio of crosslinking agent, in high temperature and high humidity season, slightly lower ratio of crosslinking agent.
3, appear crack: most of this kind of circumstance wants chemically to divide lacquer agent or sirocco spray gun to remove paint, go up afresh again lacquer. If rupture range is not big, then can use sand milling piece or dry wet amphibious sand paper to touch water, the paint that abrasion ruptures, it is after exterior burnish is smooth, wipe on be bored with child, brush on priming paint, go up afresh again lacquer.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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