News Details
Crosslinking agent of thermosetting powder coating
2017-4-15 23:52:02
Crosslinking agent of thermosetting powder coating,Is an important component of the powder coating.
Thermosetting powder coating of the crosslinking agent for paint will influence the production, storage and application, such as extrusion temperature, crosslinking time, crosslinking temperature and the flow property, impact resistance and hardness, storage stability, weather resistance, chemical resistance and so on.
Sometimes it is difficult to distinguish between crosslinking agent and resin, because this two ingredients ultimately form a complete system of three dimensional network structure. Often think small number in the system and to participate in the crosslinking reaction of low molecular weight compounds as crosslinking agent. But for some things, such as polyester/epoxy hybrid, especially 50:50 system, there is what is a crosslinking agent and what is the issue of resin.
So how bisphenol A epoxy resin and carboxylic acid polyester crosslinking agent of classification depends on the individual's hobby, or just say we epoxy/polyester powder coating is to choose matching epoxy resin and polyester resin crosslinking, epoxy and polyester as crosslinking agent, the crosslinking reaction is composed of epoxy resin of carboxyl pay couplet of epoxy resin and polyester resin membrane.
As crosslinking agent of powder coating, should possess the following conditions:
(1) in normal temperature is solid powder, granular or thin sheet, and have high glass transition temperature;
(2) requires good latent at room temperature, under high temperature has good and chemical reaction activity of resin, other additives and fillers, don't react;
(3) basic without excitant and toxicity of compound powder coating after basic non-toxic, conform to the relevant environmental protection safety standards;
(4) from energy saving point of view, can rapidly and resins under the low temperature crosslinking form satisfactory coating;
(5) crosslinking agent should be colorless or light color, can't make the coating color; (6) good stability, convenient for storage and use; (7) and a resin system has a good compatibility.
Powder coating is a new type of 100% solid powder coating does not contain solvents. With no solvent, no pollution, save energy and resources, recycling, environmental protection, reduce labor intensity and coating with high mechanical strength, etc.
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.
Powder coating is totally different from general coating morphology, it is a state of fine powder. Do not use solvent, so called the powder coating. The main characteristics of powder coatings are: a harmless and high efficiency, saving resources and environmental protection characteristics.
There are two broad categories: thermoplastic and thermosetting powder coatings powder coatings.
Thermoplastic powder coatings is made up of thermoplastic resin, pigments, fillers, plasticizer and stabilizer, components. Thermoplastic powder coatings including: polyethylene, polypropylene, polyester, polyvinyl chloride, chlorinated polyether, polyamide, cellulose, polyester.
Thermosetting powder coating is made of thermosetting resin, crosslinking agent, pigments, fillers and additives, etc. Thermosetting powder coatings including: epoxy, polyester, acrylic resin.
Disadvantages: uneven edges on powder, crosslinked coating defects after hard cover, high crosslinking conditions.
The name of the classification standard, all kinds of powder on the market is uneven. According to the properties of film forming material is divided into two categories: thermoplastic and thermosetting powder coatings powder coatings. Or by the appearance of the film forming material is divided into: extinction type, highlights, art, etc. Can also according to the using environment is divided into: indoor and outdoor type two kinds big.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Thermosetting powder coating of the crosslinking agent for paint will influence the production, storage and application, such as extrusion temperature, crosslinking time, crosslinking temperature and the flow property, impact resistance and hardness, storage stability, weather resistance, chemical resistance and so on.
Sometimes it is difficult to distinguish between crosslinking agent and resin, because this two ingredients ultimately form a complete system of three dimensional network structure. Often think small number in the system and to participate in the crosslinking reaction of low molecular weight compounds as crosslinking agent. But for some things, such as polyester/epoxy hybrid, especially 50:50 system, there is what is a crosslinking agent and what is the issue of resin.
So how bisphenol A epoxy resin and carboxylic acid polyester crosslinking agent of classification depends on the individual's hobby, or just say we epoxy/polyester powder coating is to choose matching epoxy resin and polyester resin crosslinking, epoxy and polyester as crosslinking agent, the crosslinking reaction is composed of epoxy resin of carboxyl pay couplet of epoxy resin and polyester resin membrane.
As crosslinking agent of powder coating, should possess the following conditions:
(1) in normal temperature is solid powder, granular or thin sheet, and have high glass transition temperature;
(2) requires good latent at room temperature, under high temperature has good and chemical reaction activity of resin, other additives and fillers, don't react;
(3) basic without excitant and toxicity of compound powder coating after basic non-toxic, conform to the relevant environmental protection safety standards;
(4) from energy saving point of view, can rapidly and resins under the low temperature crosslinking form satisfactory coating;
(5) crosslinking agent should be colorless or light color, can't make the coating color; (6) good stability, convenient for storage and use; (7) and a resin system has a good compatibility.
Powder coating is a new type of 100% solid powder coating does not contain solvents. With no solvent, no pollution, save energy and resources, recycling, environmental protection, reduce labor intensity and coating with high mechanical strength, etc.
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.
Powder coating is totally different from general coating morphology, it is a state of fine powder. Do not use solvent, so called the powder coating. The main characteristics of powder coatings are: a harmless and high efficiency, saving resources and environmental protection characteristics.
There are two broad categories: thermoplastic and thermosetting powder coatings powder coatings.
Thermoplastic powder coatings is made up of thermoplastic resin, pigments, fillers, plasticizer and stabilizer, components. Thermoplastic powder coatings including: polyethylene, polypropylene, polyester, polyvinyl chloride, chlorinated polyether, polyamide, cellulose, polyester.
Thermosetting powder coating is made of thermosetting resin, crosslinking agent, pigments, fillers and additives, etc. Thermosetting powder coatings including: epoxy, polyester, acrylic resin.
Disadvantages: uneven edges on powder, crosslinked coating defects after hard cover, high crosslinking conditions.
The name of the classification standard, all kinds of powder on the market is uneven. According to the properties of film forming material is divided into two categories: thermoplastic and thermosetting powder coatings powder coatings. Or by the appearance of the film forming material is divided into: extinction type, highlights, art, etc. Can also according to the using environment is divided into: indoor and outdoor type two kinds big.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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