News Details
Environmentally friendly coatings crosslinking agent
2017-4-25 13:58:54
Environmentally friendly coatings crosslinking agent,Marine steel structure before completion, general coating protection on shore first. In the midst of the sea use several years later, due to seawater immersion erosion, tides, waves splash alternately, wind and rain, the sun, such as severe environment comprehensive effect, Marine steel structure parts coating damage and loss, corrosion.
These ocean engineering structures such as offshore oil drilling platform, subsea pipeline, bridge, wharf steel pile is not moving, in order to prolong the life of the steel structure, use fixed number of year to design, to ensure maritime safety in production, can develop a underwater construction crosslinking anticorrosive coatings is very urgent and effective.
Ship on the voyage leak, if there is underwater paint directly plugging maintenance, can timely troubleshooting, and because no docking repair and greatly reduce maintenance costs, save valuable time. Underwater construction paint in water conservancy facilities of large rivers, such as reservoirs, gate underwater corrosion maintenance also has the very vital significance.
Features:
1) coating cannot be dissolved by water or emulsion, coating surface tension than water, so that coating under the condition of water can completely wet steel surface;
2) coating has a high wet adhesion, can replace most of the steel surface water, and a little residual water absorption and transformation can be;
3) using solvent-free system, had better choose anti-corrosion performance and crosslinking process water and low interference of basic material;
4) at room temperature can quickly crosslinking, in order to reduce the impact of the water;
5) coating evenly after crosslinking density, good mechanical properties and corrosion resistance.
Main ingredients: 1. The film forming matter of choice. Film forming material in coating formulation of the most important, it plays a decisive role on coating performance.
Solvent volatilization solvent coating film-forming mechanism due to the static pressure of water and the difficult;
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.
Some of the basic material, such as alkyd resin, crosslinking need oxygen to participate in, and the water phase does not have enough oxygen and film-forming crosslinking;
Some of the coating, such as isocyanate can react with moisture in the air pay couplet membrane, but in the water phase, and the water and serious interference coating contact embrittlement;
Latex paint will be water dispersed in water, it is impossible to have moisture evaporation after the emulsion particles move into the mechanism of membrane; Only the ring opening reaction mechanism of epoxy resin and free radicals reaction film forming mechanism of unsaturated polyester less affected by the water.
Epoxy resin molecule contains a large number of polar groups, easier to replacing the coated surface moisture, and due to its polymerization for ring opening polymerization, crosslinking after the volume shrinkage rate is low, only about 2%, and unsaturated polyester crosslinked volume shrinkage rate is as high as 11%, internal stress and damage and adhesion, and epoxy resin coating with high adhesion;
At the same time, using the epoxy resin, easy preparation of solvent-free thick film coating, reduce the number of construction, is advantageous to the construction of underwater coating; Epoxy resin anticorrosion performance is outstanding. Therefore, choose low viscosity, coating hydroxyl content and less effective crosslinking density larger epoxy resin.
When used alone, but epoxy resin to form coating brittleness is bigger, in order to improve the brittleness of epoxy resin, used in sulfur compounds as toughening agent to modification of epoxy resin, and as part of the film forming matter, in order to improve the toughness of the coating.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
These ocean engineering structures such as offshore oil drilling platform, subsea pipeline, bridge, wharf steel pile is not moving, in order to prolong the life of the steel structure, use fixed number of year to design, to ensure maritime safety in production, can develop a underwater construction crosslinking anticorrosive coatings is very urgent and effective.
Ship on the voyage leak, if there is underwater paint directly plugging maintenance, can timely troubleshooting, and because no docking repair and greatly reduce maintenance costs, save valuable time. Underwater construction paint in water conservancy facilities of large rivers, such as reservoirs, gate underwater corrosion maintenance also has the very vital significance.
Features:
1) coating cannot be dissolved by water or emulsion, coating surface tension than water, so that coating under the condition of water can completely wet steel surface;
2) coating has a high wet adhesion, can replace most of the steel surface water, and a little residual water absorption and transformation can be;
3) using solvent-free system, had better choose anti-corrosion performance and crosslinking process water and low interference of basic material;
4) at room temperature can quickly crosslinking, in order to reduce the impact of the water;
5) coating evenly after crosslinking density, good mechanical properties and corrosion resistance.
Main ingredients: 1. The film forming matter of choice. Film forming material in coating formulation of the most important, it plays a decisive role on coating performance.
Solvent volatilization solvent coating film-forming mechanism due to the static pressure of water and the difficult;
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.
Some of the basic material, such as alkyd resin, crosslinking need oxygen to participate in, and the water phase does not have enough oxygen and film-forming crosslinking;
Some of the coating, such as isocyanate can react with moisture in the air pay couplet membrane, but in the water phase, and the water and serious interference coating contact embrittlement;
Latex paint will be water dispersed in water, it is impossible to have moisture evaporation after the emulsion particles move into the mechanism of membrane; Only the ring opening reaction mechanism of epoxy resin and free radicals reaction film forming mechanism of unsaturated polyester less affected by the water.
Epoxy resin molecule contains a large number of polar groups, easier to replacing the coated surface moisture, and due to its polymerization for ring opening polymerization, crosslinking after the volume shrinkage rate is low, only about 2%, and unsaturated polyester crosslinked volume shrinkage rate is as high as 11%, internal stress and damage and adhesion, and epoxy resin coating with high adhesion;
At the same time, using the epoxy resin, easy preparation of solvent-free thick film coating, reduce the number of construction, is advantageous to the construction of underwater coating; Epoxy resin anticorrosion performance is outstanding. Therefore, choose low viscosity, coating hydroxyl content and less effective crosslinking density larger epoxy resin.
When used alone, but epoxy resin to form coating brittleness is bigger, in order to improve the brittleness of epoxy resin, used in sulfur compounds as toughening agent to modification of epoxy resin, and as part of the film forming matter, in order to improve the toughness of the coating.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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