News Details
External emulsified water-based paint crosslinking agent
2017-6-24 17:53:45
External emulsified water-based paint crosslinking agent
Surfactant is an important component of the water-based crosslinking coating, which is commonly used as an aqueous coating surfactant for long chain fatty acid and long chain hydrocarbon sulfonic acid. Can polymeric surfactants in addition to the appropriate activity and hydrophilic, at the same time, in order to overcome the small molecule surfactant easy migration, easy to blister, also can use macromolecular surfactant, as some block copolymer, graft copolymer, etc.
Due to its unique advantages, crosslinked waterborne coatings can be widely used as plastic varnish, cover printing varnish, photopolymer printing, etc., and have high application value in wood and plastic finishing. The water-based cross-linking coatings in our country have been developing rapidly in the past 10 years, and we need to study the high efficiency, polymerization, emulsification and high relative molecular weight of water-based photoinitiators.
With water as the diluent of water-based paint with solvent paint VOC content is greatly reduced, environmentally friendly, harmless to the health of builders and users, in domestic has quite a few of waterborne coatings enterprises successful cases.
In the future, it is urgent to carry out basic research, reduce the construction difficulty and improve the use performance of waterborne coatings. At the same time, strengthen the policy guidance, promote technology, change ideas, to eliminate worries public prejudice against waterborne coatings and related work seriously, will also have the effect of promoting development of the application of waterborne coatings.
In conclusion, under the guidance of the principles of development of the three principles of coating industry (pollution-free, provincial resources, energy conservation) and "4E" (economy, efficiency, ecology and energy), water-based coatings will have a greater development.
Already on the market at present a lot of paint to use defoaming agent, the choice to be very careful, can attention from several aspects: controlled compatibility, namely is to achieve the balance of defoaming and surface effects, both defoaming, and to prevent the shrinkage cavity and poor flowing property defects. According to the construction conditions and methods to eliminate foaming, such as brush painting, spraying and roller coating to face different bubble degree, also means different defoaming agent choice.
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.
The balance of bubble and bubble can be properly matched according to different processing and construction methods. Long - effect defoaming performance. Many defoaming agents will gradually weaken the foaming properties during the process of the paint solution, which should be high in the content of the defoaming agent in the design of the formulation. The dosage of defoaming agent accounts for 0.05% ~ 0.5% of the whole formula, preferably at about 0.1%. If the application of the anti-foaming agent is more than 0.5%, it should be considered to replace the defoaming agent. Different resin systems have different sensitivities to antifoaming agents. The selected type and dosage of waterborne defoaming agent must be determined according to different system.
Nitrocellulose is the main film-forming material of the paint film, which can be soluble in organic solvents such as ketone or lipids.
Synthetic resins are generally added to resin such as rosin glycerin, phenolic resin and alkyd resin to improve its performance.
Pure nitrocellulose coating, the paint film is brittle, easy to crack, after drying shrinkage, easy to peel off, after adding toughening agent, can overcome these shortcomings greatly.
The formation of nitrocellulose lacquer mainly depends on volatile volatilization to form hard paint film. Volatile solvents, solvents and diluents. The solvent is the main volatile component and can dissolve nitrocellulose. The common solvent is acetone, butanone, acetate, butyl acetate, ethylene glycol, ether and so on. The solvent itself cannot dissolve the nitrocellulose, but it can promote the solubility of ketones or lipid solvents, which are commonly used in ethanol. The diluent does not dissolve the nitrocellulose and can only be diluted. The commonly used diluents are benzene, toluene, xylene, etc.
Pigment and body pigment are the main components of nitrocellulose enamel, primer and putty. It is not dissolved in oil or solvent. Its function is to fill the thin hole covering the surface of the paint film, prevent the sunlight penetration, thus increase the hardness of the paint film, improve its mechanical strength, and display various colors. The pigment is titanium white, chrome yellow, carbon black and iron oxide red. The body pigment has talcum powder, calcium carbonate and so on.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Surfactant is an important component of the water-based crosslinking coating, which is commonly used as an aqueous coating surfactant for long chain fatty acid and long chain hydrocarbon sulfonic acid. Can polymeric surfactants in addition to the appropriate activity and hydrophilic, at the same time, in order to overcome the small molecule surfactant easy migration, easy to blister, also can use macromolecular surfactant, as some block copolymer, graft copolymer, etc.
Due to its unique advantages, crosslinked waterborne coatings can be widely used as plastic varnish, cover printing varnish, photopolymer printing, etc., and have high application value in wood and plastic finishing. The water-based cross-linking coatings in our country have been developing rapidly in the past 10 years, and we need to study the high efficiency, polymerization, emulsification and high relative molecular weight of water-based photoinitiators.
With water as the diluent of water-based paint with solvent paint VOC content is greatly reduced, environmentally friendly, harmless to the health of builders and users, in domestic has quite a few of waterborne coatings enterprises successful cases.
In the future, it is urgent to carry out basic research, reduce the construction difficulty and improve the use performance of waterborne coatings. At the same time, strengthen the policy guidance, promote technology, change ideas, to eliminate worries public prejudice against waterborne coatings and related work seriously, will also have the effect of promoting development of the application of waterborne coatings.
In conclusion, under the guidance of the principles of development of the three principles of coating industry (pollution-free, provincial resources, energy conservation) and "4E" (economy, efficiency, ecology and energy), water-based coatings will have a greater development.
Already on the market at present a lot of paint to use defoaming agent, the choice to be very careful, can attention from several aspects: controlled compatibility, namely is to achieve the balance of defoaming and surface effects, both defoaming, and to prevent the shrinkage cavity and poor flowing property defects. According to the construction conditions and methods to eliminate foaming, such as brush painting, spraying and roller coating to face different bubble degree, also means different defoaming agent choice.
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.
The balance of bubble and bubble can be properly matched according to different processing and construction methods. Long - effect defoaming performance. Many defoaming agents will gradually weaken the foaming properties during the process of the paint solution, which should be high in the content of the defoaming agent in the design of the formulation. The dosage of defoaming agent accounts for 0.05% ~ 0.5% of the whole formula, preferably at about 0.1%. If the application of the anti-foaming agent is more than 0.5%, it should be considered to replace the defoaming agent. Different resin systems have different sensitivities to antifoaming agents. The selected type and dosage of waterborne defoaming agent must be determined according to different system.
Nitrocellulose is the main film-forming material of the paint film, which can be soluble in organic solvents such as ketone or lipids.
Synthetic resins are generally added to resin such as rosin glycerin, phenolic resin and alkyd resin to improve its performance.
Pure nitrocellulose coating, the paint film is brittle, easy to crack, after drying shrinkage, easy to peel off, after adding toughening agent, can overcome these shortcomings greatly.
The formation of nitrocellulose lacquer mainly depends on volatile volatilization to form hard paint film. Volatile solvents, solvents and diluents. The solvent is the main volatile component and can dissolve nitrocellulose. The common solvent is acetone, butanone, acetate, butyl acetate, ethylene glycol, ether and so on. The solvent itself cannot dissolve the nitrocellulose, but it can promote the solubility of ketones or lipid solvents, which are commonly used in ethanol. The diluent does not dissolve the nitrocellulose and can only be diluted. The commonly used diluents are benzene, toluene, xylene, etc.
Pigment and body pigment are the main components of nitrocellulose enamel, primer and putty. It is not dissolved in oil or solvent. Its function is to fill the thin hole covering the surface of the paint film, prevent the sunlight penetration, thus increase the hardness of the paint film, improve its mechanical strength, and display various colors. The pigment is titanium white, chrome yellow, carbon black and iron oxide red. The body pigment has talcum powder, calcium carbonate and so on.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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