News Details
Crosslinking agent for low temperature crosslinking coatings
2017-4-30 16:31:48
Crosslinking agent for low temperature crosslinking coatings.The epoxy/amine paint system that has a target for low temperature crosslinking coatings is a dynamic area of technology development. Low cross-linked epoxy coatings can extend the construction season, because this kind of paint when the temperature dropped below 50 ° F (10 ℃) can still construction.
This paper discusses the basic idea of crosslinking agent technology for low temperature crosslinking epoxy/amine coating system. The coating properties of several cryogenic crosslinking agents and standard liquid epoxy resin were studied.
The system have been at 40 ° F (4.5 ℃) crosslinking rate using differential scanning heat meter (DSC) continuous testing cycle (14 days). Got in the standard room temperature (25 ℃, 55% relative humidity) and lower than the standard room temperature and high humidity in (10 ℃, relative humidity 90% and 4.5 ° C, relative humidity 80%) crosslinking varnish film performance.
The new approaches to low temperature crosslinking epoxy coatings are also discussed. The new approach is to use a low-temperature crosslinking agent to use polyacrylate epoxy resin.
The results show that the new base material system can improve the transparency of the paint, the anti-whiteness, and the ability to cross-link well under low temperature and wet conditions.
In today's marketing world, formulation of epoxy/amine coating designers facing the dual challenges, which should not only meet the requirements of VOC regulations, and to optimize the performance/price ratio of coating (relative to the previous industrial standards). Traditional epoxy polyamide coatings have been used in industry for more than 40 years.
However, new crosslinking techniques are still being used to overcome some of the common limitations of polyamide. In recent years, these new crosslinking techniques have been used for the crosslinking agent, which is specially used for low temperature crosslinking epoxy coatings. Low crosslinked coatings its construction period can be extended to during autumn or early, because the coating construction even when the temperature dropped below 10 ℃ still can continue.
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.
This paper provides a general view of the technology of low-temperature epoxy coatings. The performance of the varnish film with four kinds of cryogenic amine crosslinking agent was determined. The ac speed of this type of paint is monitored by the differential scanning heat meter (DSC). This paper summarizes the evaluation of new approaches for low temperature epoxy/amine coating.
The new approach is to use low-temperature crosslinking and polyacrylate epoxy. The method improves the transparency of the film, the anti-whiteness, and the crosslinking performance under low temperature and high wet conditions. One problem, however, is that the new system has a short duration.
Technical route for low temperature crosslinking coatings:
Epoxy/amine promoter for low temperature (10 ℃ or less) construction coating, epoxy/amine to shorten the drying time and improve the crosslinking rate of a kind of way is to promote the reaction of epoxy - amine. The simplification of the epoxy-amine reaction is shown in equation 1:
There are several types of chemicals can accelerate the crosslinking reaction, such as: organic acids (e.g., salicylic acid, benzoic acid or), tertiary amine (such as BDMA benzyl dimethylamine or 3-2 minus dimethylamine cresol), alcohols (methanol), water, alkylation of phenol (e.g., nonylphenol, bisphenol - A) and aliphatic amines (such as DETA or diethyl triamine, TETA triethyl amine four). The amount of accelerator needed to obtain the appropriate crosslinking rate depends on the type of promoter and its concentration in the final formulation.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
This paper discusses the basic idea of crosslinking agent technology for low temperature crosslinking epoxy/amine coating system. The coating properties of several cryogenic crosslinking agents and standard liquid epoxy resin were studied.
The system have been at 40 ° F (4.5 ℃) crosslinking rate using differential scanning heat meter (DSC) continuous testing cycle (14 days). Got in the standard room temperature (25 ℃, 55% relative humidity) and lower than the standard room temperature and high humidity in (10 ℃, relative humidity 90% and 4.5 ° C, relative humidity 80%) crosslinking varnish film performance.
The new approaches to low temperature crosslinking epoxy coatings are also discussed. The new approach is to use a low-temperature crosslinking agent to use polyacrylate epoxy resin.
The results show that the new base material system can improve the transparency of the paint, the anti-whiteness, and the ability to cross-link well under low temperature and wet conditions.
In today's marketing world, formulation of epoxy/amine coating designers facing the dual challenges, which should not only meet the requirements of VOC regulations, and to optimize the performance/price ratio of coating (relative to the previous industrial standards). Traditional epoxy polyamide coatings have been used in industry for more than 40 years.
However, new crosslinking techniques are still being used to overcome some of the common limitations of polyamide. In recent years, these new crosslinking techniques have been used for the crosslinking agent, which is specially used for low temperature crosslinking epoxy coatings. Low crosslinked coatings its construction period can be extended to during autumn or early, because the coating construction even when the temperature dropped below 10 ℃ still can continue.
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.
This paper provides a general view of the technology of low-temperature epoxy coatings. The performance of the varnish film with four kinds of cryogenic amine crosslinking agent was determined. The ac speed of this type of paint is monitored by the differential scanning heat meter (DSC). This paper summarizes the evaluation of new approaches for low temperature epoxy/amine coating.
The new approach is to use low-temperature crosslinking and polyacrylate epoxy. The method improves the transparency of the film, the anti-whiteness, and the crosslinking performance under low temperature and high wet conditions. One problem, however, is that the new system has a short duration.
Technical route for low temperature crosslinking coatings:
Epoxy/amine promoter for low temperature (10 ℃ or less) construction coating, epoxy/amine to shorten the drying time and improve the crosslinking rate of a kind of way is to promote the reaction of epoxy - amine. The simplification of the epoxy-amine reaction is shown in equation 1:
There are several types of chemicals can accelerate the crosslinking reaction, such as: organic acids (e.g., salicylic acid, benzoic acid or), tertiary amine (such as BDMA benzyl dimethylamine or 3-2 minus dimethylamine cresol), alcohols (methanol), water, alkylation of phenol (e.g., nonylphenol, bisphenol - A) and aliphatic amines (such as DETA or diethyl triamine, TETA triethyl amine four). The amount of accelerator needed to obtain the appropriate crosslinking rate depends on the type of promoter and its concentration in the final formulation.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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