News Details
Multi-amine coating crosslinking agent
2017-8-4 11:14:21
Multi-amine coating crosslinking agent
Polyamide coatings crosslinking agent has fatty amine, aromatic amine, lipid-ring amine and modified amine, and can be crosslinked epoxy resin under certain conditions to form cross-linking properties of specific properties.
In addition to the use or modification of the polyamide crosslinking agent, it can be used in combination. Because of the mixing of polyamines, the melting point of the polyamine mixture is reduced, making it easy to interdissolve with epoxy resin, so as to facilitate the use of polyamide crosslinking agent.
(1) direct chain aliphatic polyamine, the direct chain fatty polyamine is more toxic, the crosslinking reaction is quick, and can be crosslinked at normal temperature, but the heat is large and the available time is short. This kind of crosslinking agent can be crosslinked at room temperature, and its additive dosage should be reduced if the dosage is theoretical or near theoretical quantity, if it contains tertiary amine structure.
(2) adipocyte polyamine, polyamine is different due to the combination of amino groups and the reaction activity, so the performance of the crosslinking products generated by epoxy resin is very different.
(3) aromatic polyamines, aromatic polyamines, which are directly linked to aromatic rings.
(4) modified multivariate amine, due to separate use multivariate amine to stimulating the skin and mucosa, strict and the ratio of epoxy resin, multiple amine strongly basic and easy and carbon dioxide from the air to generate salt and other ills, so often use modified amine.
(5) multiple amine, eutectic mixture when aromatic amine diversity mixed with epoxy resin, it is difficult to form a uniform system, so need to be heated to make it evenly dispersed in the epoxy resin, but heating will make the actual life is short. In order to solve this problem, it is often the eutectic melting mix method, so that we can reduce the melting point of single aromatic amine, even when both melting point higher aromatic amine can be changed into liquid eutectic blend.
(6) tertiary amine and mimidazol-type crosslinking agent, tertiary amine is an alkaline compound, which is a catalytic crosslinking agent of anionic type.
(7) other amine crosslinking agents
Due to the existence of volatile, high toxicity, rapid crosslinking, too strict ratio, and easy absorption of carbon dioxide to reduce the effect of crosslinking. So for amine crosslinking agent by chemical or physical methods for modification can reduce its volatile, toxicity, amine is the development trend of crosslinking agent, the crosslinking speed moderate, matching is not strict, easy blending with epoxy resin.
Chinese name: Diethyl toluene diamine(DETDA)
Polyamide coatings crosslinking agent has fatty amine, aromatic amine, lipid-ring amine and modified amine, and can be crosslinked epoxy resin under certain conditions to form cross-linking properties of specific properties.
In addition to the use or modification of the polyamide crosslinking agent, it can be used in combination. Because of the mixing of polyamines, the melting point of the polyamine mixture is reduced, making it easy to interdissolve with epoxy resin, so as to facilitate the use of polyamide crosslinking agent.
(1) direct chain aliphatic polyamine, the direct chain fatty polyamine is more toxic, the crosslinking reaction is quick, and can be crosslinked at normal temperature, but the heat is large and the available time is short. This kind of crosslinking agent can be crosslinked at room temperature, and its additive dosage should be reduced if the dosage is theoretical or near theoretical quantity, if it contains tertiary amine structure.
(2) adipocyte polyamine, polyamine is different due to the combination of amino groups and the reaction activity, so the performance of the crosslinking products generated by epoxy resin is very different.
(3) aromatic polyamines, aromatic polyamines, which are directly linked to aromatic rings.
(4) modified multivariate amine, due to separate use multivariate amine to stimulating the skin and mucosa, strict and the ratio of epoxy resin, multiple amine strongly basic and easy and carbon dioxide from the air to generate salt and other ills, so often use modified amine.
(5) multiple amine, eutectic mixture when aromatic amine diversity mixed with epoxy resin, it is difficult to form a uniform system, so need to be heated to make it evenly dispersed in the epoxy resin, but heating will make the actual life is short. In order to solve this problem, it is often the eutectic melting mix method, so that we can reduce the melting point of single aromatic amine, even when both melting point higher aromatic amine can be changed into liquid eutectic blend.
(6) tertiary amine and mimidazol-type crosslinking agent, tertiary amine is an alkaline compound, which is a catalytic crosslinking agent of anionic type.
(7) other amine crosslinking agents
Due to the existence of volatile, high toxicity, rapid crosslinking, too strict ratio, and easy absorption of carbon dioxide to reduce the effect of crosslinking. So for amine crosslinking agent by chemical or physical methods for modification can reduce its volatile, toxicity, amine is the development trend of crosslinking agent, the crosslinking speed moderate, matching is not strict, easy blending with epoxy resin.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine packingļ¼ net weight 200KG/ galvanized iron drum (a small cabinet pallet loaded 16 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).
The general modification methods include the addition of epoxy compound polyamines, namely, single or double epoxides and excess polyamine reactions. Mannihistamine, which reacts with aldehydes and phenols, is called mannitine; Polyamines and thiourea are used to make it possible to use in low-temperature environments.
The new product JT - 6025, a new product of fast solid cashew modified amine epoxy crosslinking agent, is a kind of phenolic amine crosslinking agent, which has the properties of general phenolic amine and low molecular polyamide. It can be delivered at room temperature (15 min), and it can be crosslinked in low temperature and wet conditions. The crosslinking has good mechanical properties and outstanding chemical resistance and corrosion resistance. It can be used in the preparation of fast solid epoxy adhesive and quick dry epoxy corrosion resistant coatings.
Qing-song Lin has carried on the chemical modification of epoxy resin, such as crosslinking agent, to generate the Mannich type (Mannich) modified DETA epoxy crosslinking agent, the result shows that the DETA of modified epoxy resin crosslinking agent has more excellent physical than raw material DETA.
The development of epoxy resins has also changed with the development of epoxy resin. Amine epoxy resin crosslinking agent has a wide variety of products and has been widely used. In not suitable for heating environment, civil engineering and construction industry, for example, can be at room temperature fast crosslinked epoxy crosslinking agent is particularly important, and room temperature crosslinking is also in line with the requirements of energy conservation and emissions reduction.
Although there are many advantages and disadvantages of amines crosslinking agent, the development trend of amines cross-linking agent modified by amines is becoming more and more obvious. Therefore, the development of healthy and environmental protection, in line with the rapid crosslinking of the epoxy crosslinking agent has a broad prospect.
Lipocycline is an amine compound containing lipid rings (cyclohexyl, heteroxic, nitrogen hexaplase) in the molecular structure.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
The general modification methods include the addition of epoxy compound polyamines, namely, single or double epoxides and excess polyamine reactions. Mannihistamine, which reacts with aldehydes and phenols, is called mannitine; Polyamines and thiourea are used to make it possible to use in low-temperature environments.
The new product JT - 6025, a new product of fast solid cashew modified amine epoxy crosslinking agent, is a kind of phenolic amine crosslinking agent, which has the properties of general phenolic amine and low molecular polyamide. It can be delivered at room temperature (15 min), and it can be crosslinked in low temperature and wet conditions. The crosslinking has good mechanical properties and outstanding chemical resistance and corrosion resistance. It can be used in the preparation of fast solid epoxy adhesive and quick dry epoxy corrosion resistant coatings.
Qing-song Lin has carried on the chemical modification of epoxy resin, such as crosslinking agent, to generate the Mannich type (Mannich) modified DETA epoxy crosslinking agent, the result shows that the DETA of modified epoxy resin crosslinking agent has more excellent physical than raw material DETA.
The development of epoxy resins has also changed with the development of epoxy resin. Amine epoxy resin crosslinking agent has a wide variety of products and has been widely used. In not suitable for heating environment, civil engineering and construction industry, for example, can be at room temperature fast crosslinked epoxy crosslinking agent is particularly important, and room temperature crosslinking is also in line with the requirements of energy conservation and emissions reduction.
Although there are many advantages and disadvantages of amines crosslinking agent, the development trend of amines cross-linking agent modified by amines is becoming more and more obvious. Therefore, the development of healthy and environmental protection, in line with the rapid crosslinking of the epoxy crosslinking agent has a broad prospect.
Lipocycline is an amine compound containing lipid rings (cyclohexyl, heteroxic, nitrogen hexaplase) in the molecular structure.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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