News Details
Two-component waterborne polyurethane coatings crosslinking agent
2017-3-25 16:39:39
Two-component waterborne polyurethane coatings crosslinking agent,Two-component polyurethane coating with low film-forming temperature, good adhesion, abrasion resistance, hardness and chemical resistance, good weatherability and other superior function, is widely used in industrial and automotive paint, wood furniture, etc. Two-component waterborne polyurethane coating is mainly composed of plural alcohol and water containing - OH base with - NCO based low viscosity of isocyanate crosslinking agent.
The king from countries on the basis of the waterborne polyurethane resin, such as preparation of metal with two-component waterborne polyurethane coatings. Adhesion coating pencil hardness of 2 h, 1 level or higher, alcohol resistance, resistance to high temperature and high humidity, salt water resistance are all qualified, VOC = 135 g/L (200 g/L) or less. Results show that the physical and mechanical properties of coating film is superior, and the quality of the construction is good, can use on a large scale on the metal components.
Shi Li equality by hydroxyl acrylic emulsion preparation of waterborne two-component polyurethane coatings, the coating has a good construction performance made by the decoration and protection function. Compared with the traditional solvent-based coatings, two-component waterborne polyurethane coatings film forming process is relatively complex, higher requirements and coating.
Coating construction need to be in relatively low humidity, low temperature environment, strictly in accordance with the requirements of process control coating ratio of each composition, at the same time, according to the requirements of the coating construction time limit, as far as possible in a relatively short period of time to complete the painting.
Two-component waterborne polyurethane coatings cross-linking agent is a type of the coating is very promising. Main application direction of wood coatings, car repair paint, anti-corrosion paint, floor paint, electronic coating, special coatings, polyurethane waterproof coating, etc. Defect is construction process is complex, demanding the construction environment, the paint film is prone to disease.
One-component polyurethane coatings are mainly ammonia ester oil coating, moisture crosslinking polyurethane coatings, enclosed polyurethane coating and other varieties. Application two-component coating is better than wide, is mainly used for floor coatings, anticorrosive coatings, coil coatings and so on, its overall performance two-component coating is better than comprehensive.
Compared with solvent two-component polyurethane coating, single component waterborne polyurethane coating of water resistance, mechanical properties and chemical resistance there is a certain gap. And add the crosslinking agent intermolecular crosslinking reaction, made of two-component waterborne polyurethane coatings is one of the best ways to improve the coating performance.
Two-component polyurethane coating with low film-forming temperature, good adhesion, abrasion resistance, hardness and chemical resistance, good weatherability and superior performance, as a wide range of industrial protective paint, wood furniture and car.
Waterborne two-component polyurethane coatings will bi-component solvent polyurethane coating of high performance and water-based coatings combined with low VOC content, become the focus in the coating industry. Waterborne two-component polyurethane coatings by containing - OH the base of multivariate alcohol and water with - NCO based low viscosity of isocyanate curing agent, its coating performance is mainly determined by the composition and structure of hydroxyl resin.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
A reagent grade additives
Anticorrosive coating of waterborne epoxy coatings film performance impact performance testing
(1) water absorption tests: HG/T 3344-2012 for the film bibulous rate determination act film water absorption test.
(2) the salt fog test performance: GB/T 1771-1771 "paint and varnish Salt spray resistance test, salt spray resistance test.
(3), electrochemical impedance spectroscopy test: will try making good board soaked in 3.5% NaCl aqueous solution (as shown in figure 4), soak 30 minutes for ac impedance test for the first time, after giving a test every once in a while (early soak test interval is shorter, with the increase of immersion time, test time interval can be appropriately extended), auxiliary electrodes are platinum electrode, reference the calomel electrode was scanning frequency range is 105 ~ 10-2 Hz, disturbance on the working electrode voltage of 10 mV, test covers an area of 19.6 cm2.
Stripping EDAX test after coating. Will contain the antirust paint coating according to GB/T 1727-1992 general preparation method of the paint film methods will paint coated in 10 mm x 10 mm x 2 mm steel plate, in 10% salt water after 10 d, stripping EDAX test after coating.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
The king from countries on the basis of the waterborne polyurethane resin, such as preparation of metal with two-component waterborne polyurethane coatings. Adhesion coating pencil hardness of 2 h, 1 level or higher, alcohol resistance, resistance to high temperature and high humidity, salt water resistance are all qualified, VOC = 135 g/L (200 g/L) or less. Results show that the physical and mechanical properties of coating film is superior, and the quality of the construction is good, can use on a large scale on the metal components.
Shi Li equality by hydroxyl acrylic emulsion preparation of waterborne two-component polyurethane coatings, the coating has a good construction performance made by the decoration and protection function. Compared with the traditional solvent-based coatings, two-component waterborne polyurethane coatings film forming process is relatively complex, higher requirements and coating.
Coating construction need to be in relatively low humidity, low temperature environment, strictly in accordance with the requirements of process control coating ratio of each composition, at the same time, according to the requirements of the coating construction time limit, as far as possible in a relatively short period of time to complete the painting.
Two-component waterborne polyurethane coatings cross-linking agent is a type of the coating is very promising. Main application direction of wood coatings, car repair paint, anti-corrosion paint, floor paint, electronic coating, special coatings, polyurethane waterproof coating, etc. Defect is construction process is complex, demanding the construction environment, the paint film is prone to disease.
One-component polyurethane coatings are mainly ammonia ester oil coating, moisture crosslinking polyurethane coatings, enclosed polyurethane coating and other varieties. Application two-component coating is better than wide, is mainly used for floor coatings, anticorrosive coatings, coil coatings and so on, its overall performance two-component coating is better than comprehensive.
Compared with solvent two-component polyurethane coating, single component waterborne polyurethane coating of water resistance, mechanical properties and chemical resistance there is a certain gap. And add the crosslinking agent intermolecular crosslinking reaction, made of two-component waterborne polyurethane coatings is one of the best ways to improve the coating performance.
Two-component polyurethane coating with low film-forming temperature, good adhesion, abrasion resistance, hardness and chemical resistance, good weatherability and superior performance, as a wide range of industrial protective paint, wood furniture and car.
Waterborne two-component polyurethane coatings will bi-component solvent polyurethane coating of high performance and water-based coatings combined with low VOC content, become the focus in the coating industry. Waterborne two-component polyurethane coatings by containing - OH the base of multivariate alcohol and water with - NCO based low viscosity of isocyanate curing agent, its coating performance is mainly determined by the composition and structure of hydroxyl resin.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
A reagent grade additives
Anticorrosive coating of waterborne epoxy coatings film performance impact performance testing
(1) water absorption tests: HG/T 3344-2012 for the film bibulous rate determination act film water absorption test.
(2) the salt fog test performance: GB/T 1771-1771 "paint and varnish Salt spray resistance test, salt spray resistance test.
(3), electrochemical impedance spectroscopy test: will try making good board soaked in 3.5% NaCl aqueous solution (as shown in figure 4), soak 30 minutes for ac impedance test for the first time, after giving a test every once in a while (early soak test interval is shorter, with the increase of immersion time, test time interval can be appropriately extended), auxiliary electrodes are platinum electrode, reference the calomel electrode was scanning frequency range is 105 ~ 10-2 Hz, disturbance on the working electrode voltage of 10 mV, test covers an area of 19.6 cm2.
Stripping EDAX test after coating. Will contain the antirust paint coating according to GB/T 1727-1992 general preparation method of the paint film methods will paint coated in 10 mm x 10 mm x 2 mm steel plate, in 10% salt water after 10 d, stripping EDAX test after coating.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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