News Details
Diamine coating crosslinking agent
2017-7-8 16:03:49
Diamine coating crosslinking agent
The diethylenediamine (EDA) in the cross-linking agent of diamines is a liquid with very low viscosity, with a mass fraction of 6% ~ 8%. Crosslinking conditions for 4 ~ 7 days at room temperature, or 120 ℃ / 3 h, 150 ℃ / 2 h. The reaction of ethylenediamine and epoxy resin is exothermic and the application period is short. The dosage should not be too large.
Ethylenediamine volatile and irritating, mainly used as the new crosslinking agent:
(1) amine ethyl ethanolamine, the appearance is colorless to light yellow slightly viscous, hygroscopic liquid, have amine stink. Density is 1.030, the boiling point of 243.7 ℃, the viscosity of 141 CPS, soluble in water, alcohol, ether and aromatic solvents. It is prepared by the reaction of ethylenediamine and ethylene oxide, or hydroxyethylation. The crosslinking agent is less toxic, and there are many improvements in the physical and mechanical properties of the resin crosslinking.
The use of fatty polyamine crosslinking agent is stricter, and the error of the optimum dosage is the result of the decrease in water resistance and heat resistance of the glue. The use of mannieine is not strict. Mannioid condensation is insoluble in water and not hygroscopic, and water has no effect on crosslinking reaction. It contains phenolic hydroxyl, which is highly reactive.
Hexamethylenediamine (HMDA), melting temperature 40.8 ℃, smells, excitant bigger, sensitive to carbon dioxide from the air, easily into ammonium carbonate, rarely used as crosslinking agent, more used is in the form of modified content. Hexaediamine and glycidyl ether, acrylate, acrylonitrile, diketone acrylamide (DAAM), dicyclic carbonate reaction addition.
Homolog: trimethylhexamethylenediamine (TMD)
Diethylamine propylamine
In the molecular structure, a tertiary amine group is included in the structure of the molecular structure, which can be used as the crosslinking reaction promoter for the crosslinking agent of anhydride and polyamide in the process of resin crosslinking. Its vapor pressure is higher than that of aliphatic polyamine, so it is more toxic. It has excellent adhesion, good low-temperature properties of casting products, superior electrical properties to other fatty amines, but resistant to heat and drug resistance.
Diamine cross-linking agent: high - carbon - fat - aliphatic diamine
It refers to the number of primary chain carbon atoms in the molecular structure in more than eight adipose diamines.
Chinese name: Diethyl toluene diamine(DETDA)
Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
The diethylenediamine (EDA) in the cross-linking agent of diamines is a liquid with very low viscosity, with a mass fraction of 6% ~ 8%. Crosslinking conditions for 4 ~ 7 days at room temperature, or 120 ℃ / 3 h, 150 ℃ / 2 h. The reaction of ethylenediamine and epoxy resin is exothermic and the application period is short. The dosage should not be too large.
Ethylenediamine volatile and irritating, mainly used as the new crosslinking agent:
(1) amine ethyl ethanolamine, the appearance is colorless to light yellow slightly viscous, hygroscopic liquid, have amine stink. Density is 1.030, the boiling point of 243.7 ℃, the viscosity of 141 CPS, soluble in water, alcohol, ether and aromatic solvents. It is prepared by the reaction of ethylenediamine and ethylene oxide, or hydroxyethylation. The crosslinking agent is less toxic, and there are many improvements in the physical and mechanical properties of the resin crosslinking.
The use of fatty polyamine crosslinking agent is stricter, and the error of the optimum dosage is the result of the decrease in water resistance and heat resistance of the glue. The use of mannieine is not strict. Mannioid condensation is insoluble in water and not hygroscopic, and water has no effect on crosslinking reaction. It contains phenolic hydroxyl, which is highly reactive.
Hexamethylenediamine (HMDA), melting temperature 40.8 ℃, smells, excitant bigger, sensitive to carbon dioxide from the air, easily into ammonium carbonate, rarely used as crosslinking agent, more used is in the form of modified content. Hexaediamine and glycidyl ether, acrylate, acrylonitrile, diketone acrylamide (DAAM), dicyclic carbonate reaction addition.
Homolog: trimethylhexamethylenediamine (TMD)
Diethylamine propylamine
In the molecular structure, a tertiary amine group is included in the structure of the molecular structure, which can be used as the crosslinking reaction promoter for the crosslinking agent of anhydride and polyamide in the process of resin crosslinking. Its vapor pressure is higher than that of aliphatic polyamine, so it is more toxic. It has excellent adhesion, good low-temperature properties of casting products, superior electrical properties to other fatty amines, but resistant to heat and drug resistance.
Diamine cross-linking agent: high - carbon - fat - aliphatic diamine
It refers to the number of primary chain carbon atoms in the molecular structure in more than eight adipose diamines.
Chinese name: Diethyl toluene diamine(DETDA)
Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
Hazard Class: 6.1
Unsaturated aliphatic diamine crosslinking agent at room temperature or heating (80 ~ 120 ℃) crosslinking of low molecular weight epoxy resin. The physical mechanics and dielectric properties of unsaturated diamine crosslinking agent crosslinking are excellent, and the crosslinking degree increases with the increase of crosslinking temperature. Usually, the method of crosslinking at room temperature and gradually heating crosslinking is adopted.
Fatty amide polyamine is usually produced by the reaction of mono fatty acid and fatty polyamine. The higher the content of imidazoline, the longer the gel time of resin composition. This kind of crosslinking is characterized by low viscosity, long gel time, good moisture performance, and good adhesion to many base materials including wet concrete.
Fatty amines containing aromatic rings: dimethylphenylenediamine (MXDA)
It is prepared by the two - step reaction of ammonia oxidation and hydrogenation. The characteristics of the crosslinking agent is: due to the molecular structure contains aliphatic amine, can do crosslinking agent at normal temperature, molecular structure containing benzene ring, the crosslinking more heat resistance is better than that of aliphatic amine. The vapor is low and the inhalation is small. It is easy to absorb carbon dioxide from the air.
The cross-linking properties of dimethylphenylenediamine were similar to that of polyethylene diamine, and the amount of bisphenol A epoxy resin with epoxy-equivalent of 185 was 16 ~ 18%. 100 g resin at room temperature is 50 min period of application of crosslinking conditions: at room temperature for 24 h + 70 ℃ / 1 h or room temperature / 7 days. The thermal deformation temperature of crosslinked can reach 130 ℃ ~ 150 ℃. Low viscosity, normal temperature crosslinking, heat resistance, water resistance, good drug resistance, widely used in casting, adhesion and coating.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Unsaturated aliphatic diamine crosslinking agent at room temperature or heating (80 ~ 120 ℃) crosslinking of low molecular weight epoxy resin. The physical mechanics and dielectric properties of unsaturated diamine crosslinking agent crosslinking are excellent, and the crosslinking degree increases with the increase of crosslinking temperature. Usually, the method of crosslinking at room temperature and gradually heating crosslinking is adopted.
Fatty amide polyamine is usually produced by the reaction of mono fatty acid and fatty polyamine. The higher the content of imidazoline, the longer the gel time of resin composition. This kind of crosslinking is characterized by low viscosity, long gel time, good moisture performance, and good adhesion to many base materials including wet concrete.
Fatty amines containing aromatic rings: dimethylphenylenediamine (MXDA)
It is prepared by the two - step reaction of ammonia oxidation and hydrogenation. The characteristics of the crosslinking agent is: due to the molecular structure contains aliphatic amine, can do crosslinking agent at normal temperature, molecular structure containing benzene ring, the crosslinking more heat resistance is better than that of aliphatic amine. The vapor is low and the inhalation is small. It is easy to absorb carbon dioxide from the air.
The cross-linking properties of dimethylphenylenediamine were similar to that of polyethylene diamine, and the amount of bisphenol A epoxy resin with epoxy-equivalent of 185 was 16 ~ 18%. 100 g resin at room temperature is 50 min period of application of crosslinking conditions: at room temperature for 24 h + 70 ℃ / 1 h or room temperature / 7 days. The thermal deformation temperature of crosslinked can reach 130 ℃ ~ 150 ℃. Low viscosity, normal temperature crosslinking, heat resistance, water resistance, good drug resistance, widely used in casting, adhesion and coating.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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