News Details
Aliphatic polyurea heavy-duty coating crosslinking agent
2017-4-8 11:48:10
Aliphatic polyurea heavy-duty coating crosslinking agent,USES the new type structure of poly (aspartic acid ester as main resin, aliphatic isocyanate as crosslinking agent, the successful development has long ultraviolet resistant function of aliphatic polyurea heavy-duty coating, the coating with high solid low viscosity properties, resistance to uv test more than 4000 h, wear-resisting performance is excellent. Is a kind of good environmental protection long-term heavy-duty coating.
Poly (aspartic acid ester liquid of 100% solid content, viscosity of only 1000-1500 CPS, when the researchers as a reactive diluent to use acrylic polyurethane coating, later found out that it can be made with excellent performance of solvent-free coatings and high solid coatings.
The coating of solid content in 90-100%, zero VOC or very low VOC emissions, a construction can obtain the required film thickness, improve the working efficiency, not only environmental protection and energy saving.
The coating reaction with aliphatic isocyanate, room temperature can film, coating has excellent weatherability, close to the ultraviolet resistance of fluorocarbon coating, far more than the traditional acrylic polyurethane (PU) coating; In addition, it also has a super abrasion resistance. Therefore the coating in the heavy-duty coatings, Marine coatings, wind power blade coatings, automobile coatings, and other fields will have broad application prospects.
However, due to the traditional poly (aspartic acid ester only commonly used NH1420 and NH1520 two type of resin, the former reaction with aliphatic isocyanate gel time is too short, only 15 to 20 min, construction time, difficult to enter the conventional coatings industry; The latter though gel time is longer, but high glass transition temperature Tg, crisp, cannot be used alone, can only be modified on each other and to make up for each other defects, but the coating made of gel time is no more than half an hour, is difficult to used for conventional coating accepted by the customer.
In this paper, using poly (aspartic acid ester resin series, as the main body of coating resin, developed into a super long resistance to ultraviolet environment-friendly polyurea heavy-duty coating, the coating has excellent comprehensive performance. Activation of construction period can be extended to 2 to 3 h, solve the long-standing of poly (aspartic acid ester coatings are too short construction period. Make the poly (aspartic acid ester this performance polyurea coatings variety into traditional painting, including anticorrosion coating fields become possible.
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
The experiment main raw material. The main resin: F524, F520 poly (aspartic acid ester; D2925 resin, modified poly (aspartic acid ester resin; Pigment: rutile type titanium pigment R595; Assistant: the BD - 8330 dispersants, BD - 8141 dispersants. Other additives: flow ping agent; Defoaming agent; Anti-settling agents, uv absorbent;
Crosslinking agent: HDI trimer, SP - 103 - p elastic crosslinking agent
The preparation process. Part A: resin, powder, additives, in turn, add to the paint mixing cylinder, high-speed disperse 30 min, and then use sand mill grinding dispersion and fineness of 15 microns below, add the remaining solvent in order to adjust the viscosity and solid content. Get part A; Part B: after each raw materials mixing, filtering packaging;
Coating preparation. Will A/B component according to the quality than 2:1 ratio of mixture, coating on the 0.2 mm thickness of the tin plate, according to the need of test indicators, tin plate can spray primer in advance. Coating thickness control 0.2 + / - 0.02 mm. Membrane standard reference JG/T172 - in 2005, the film under the condition of 25 + 2 ℃ crosslinking, curing, 7 days to do the performance test.
Routine performance test: according to the enterprise standard Q/FY3-2011 "poly (aspartic acid ester polyurea anti-corrosive coating standards; Main testing instruments: AUW320 analytical balance, drying chamber, ISO scraper fineness meter, QTJ bending device, QCJ impactor, abrasion tester, MH - 1 PosiTest coating tension meter, CTP701F programmable high and low temperature test chamber, HRTR03 wet temperature instrument.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Poly (aspartic acid ester liquid of 100% solid content, viscosity of only 1000-1500 CPS, when the researchers as a reactive diluent to use acrylic polyurethane coating, later found out that it can be made with excellent performance of solvent-free coatings and high solid coatings.
The coating of solid content in 90-100%, zero VOC or very low VOC emissions, a construction can obtain the required film thickness, improve the working efficiency, not only environmental protection and energy saving.
The coating reaction with aliphatic isocyanate, room temperature can film, coating has excellent weatherability, close to the ultraviolet resistance of fluorocarbon coating, far more than the traditional acrylic polyurethane (PU) coating; In addition, it also has a super abrasion resistance. Therefore the coating in the heavy-duty coatings, Marine coatings, wind power blade coatings, automobile coatings, and other fields will have broad application prospects.
However, due to the traditional poly (aspartic acid ester only commonly used NH1420 and NH1520 two type of resin, the former reaction with aliphatic isocyanate gel time is too short, only 15 to 20 min, construction time, difficult to enter the conventional coatings industry; The latter though gel time is longer, but high glass transition temperature Tg, crisp, cannot be used alone, can only be modified on each other and to make up for each other defects, but the coating made of gel time is no more than half an hour, is difficult to used for conventional coating accepted by the customer.
In this paper, using poly (aspartic acid ester resin series, as the main body of coating resin, developed into a super long resistance to ultraviolet environment-friendly polyurea heavy-duty coating, the coating has excellent comprehensive performance. Activation of construction period can be extended to 2 to 3 h, solve the long-standing of poly (aspartic acid ester coatings are too short construction period. Make the poly (aspartic acid ester this performance polyurea coatings variety into traditional painting, including anticorrosion coating fields become possible.
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
The experiment main raw material. The main resin: F524, F520 poly (aspartic acid ester; D2925 resin, modified poly (aspartic acid ester resin; Pigment: rutile type titanium pigment R595; Assistant: the BD - 8330 dispersants, BD - 8141 dispersants. Other additives: flow ping agent; Defoaming agent; Anti-settling agents, uv absorbent;
Crosslinking agent: HDI trimer, SP - 103 - p elastic crosslinking agent
The preparation process. Part A: resin, powder, additives, in turn, add to the paint mixing cylinder, high-speed disperse 30 min, and then use sand mill grinding dispersion and fineness of 15 microns below, add the remaining solvent in order to adjust the viscosity and solid content. Get part A; Part B: after each raw materials mixing, filtering packaging;
Coating preparation. Will A/B component according to the quality than 2:1 ratio of mixture, coating on the 0.2 mm thickness of the tin plate, according to the need of test indicators, tin plate can spray primer in advance. Coating thickness control 0.2 + / - 0.02 mm. Membrane standard reference JG/T172 - in 2005, the film under the condition of 25 + 2 ℃ crosslinking, curing, 7 days to do the performance test.
Routine performance test: according to the enterprise standard Q/FY3-2011 "poly (aspartic acid ester polyurea anti-corrosive coating standards; Main testing instruments: AUW320 analytical balance, drying chamber, ISO scraper fineness meter, QTJ bending device, QCJ impactor, abrasion tester, MH - 1 PosiTest coating tension meter, CTP701F programmable high and low temperature test chamber, HRTR03 wet temperature instrument.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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