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Agent of latent coatings of aliphatic amine
2017-7-28 11:46:38
Agent of latent coatings of aliphatic amine
In this paper, methyl-isobutyl ketone was used to modify the diphenylenediamine to obtain the lipogenic subagent, and the structure of the product was characterized by infrared spectroscopy.
From aliphatic amine dormant sexual intercourse crosslinking temperature, time and strength of the coupling agent etc aspects aliphatic amine dormant sexual intercourse agent and its crosslinking performance and storage stability of constitute a one-component epoxy resin system. The results show that the px amine ketone imide crosslinking performance is superior, the crosslinking conditions as follows: 120 ℃, 2 h, the tensile shear strength is 8.9 MPa, storage period more than 3 months.
The research of epoxy resin-latent sexual coupler is a hot topic in recent years. Latent sexual intercourse agent, refers to the added to the epoxy resin instead of a single set of points in the system have certain storage stability at room temperature, and in the heat, light, humidity, pressure and other conditions can quickly on the crosslinking reaction of cross-linking agent.
Aliphatic amine crosslinking agent such as ethylenediamine, hexamethylenediamine, divinyl three amine is the commonly used two-component epoxy crosslinking agent at room temperature, by the methods of chemical modification, with the organic ketone compounds nucleophilic addition reaction, dehydration generated imine is a closed, reduce its crosslinking activity, the effective way of improving its storage stability.
Ketoylamine is a chemical bed made of methyl ethyl ketone, methyl isobutyl ketone and primary amine condensation and dehydration. It is a light yellow liquid with ammonia flavor and stable at room temperature. In moist environment, through the effect of moisture and moisture, ketimine into amines and ketones, so can make epoxy cross-linking at room temperature, this is the principle of ketone imide has latent.
The main instruments and reagents. The TENSOR27 Fourier infrared spectrometer; NDJ - 7 rotary viscometer; CMT4104 universal material testing machine; 876-1a vacuum drying oven. Methyl-isobutyl ketone, analysis pure; Diphenylmethylamine, industrial grade; E-51 epoxy resin, industrial grade.
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
In this paper, methyl-isobutyl ketone was used to modify the diphenylenediamine to obtain the lipogenic subagent, and the structure of the product was characterized by infrared spectroscopy.
From aliphatic amine dormant sexual intercourse crosslinking temperature, time and strength of the coupling agent etc aspects aliphatic amine dormant sexual intercourse agent and its crosslinking performance and storage stability of constitute a one-component epoxy resin system. The results show that the px amine ketone imide crosslinking performance is superior, the crosslinking conditions as follows: 120 ℃, 2 h, the tensile shear strength is 8.9 MPa, storage period more than 3 months.
The research of epoxy resin-latent sexual coupler is a hot topic in recent years. Latent sexual intercourse agent, refers to the added to the epoxy resin instead of a single set of points in the system have certain storage stability at room temperature, and in the heat, light, humidity, pressure and other conditions can quickly on the crosslinking reaction of cross-linking agent.
Aliphatic amine crosslinking agent such as ethylenediamine, hexamethylenediamine, divinyl three amine is the commonly used two-component epoxy crosslinking agent at room temperature, by the methods of chemical modification, with the organic ketone compounds nucleophilic addition reaction, dehydration generated imine is a closed, reduce its crosslinking activity, the effective way of improving its storage stability.
Ketoylamine is a chemical bed made of methyl ethyl ketone, methyl isobutyl ketone and primary amine condensation and dehydration. It is a light yellow liquid with ammonia flavor and stable at room temperature. In moist environment, through the effect of moisture and moisture, ketimine into amines and ketones, so can make epoxy cross-linking at room temperature, this is the principle of ketone imide has latent.
The main instruments and reagents. The TENSOR27 Fourier infrared spectrometer; NDJ - 7 rotary viscometer; CMT4104 universal material testing machine; 876-1a vacuum drying oven. Methyl-isobutyl ketone, analysis pure; Diphenylmethylamine, industrial grade; E-51 epoxy resin, industrial grade.
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
Synthesis of diphenylmethylamine. Will dissolve in toluene amines and excess methyl isobutyl ketone (amount of substance ratio 1:2), in the clean flask stand-up, installing water device in the oil bath temperature mixing reaction, heating up to about 106 ℃ began to return, as the condensation water out, the temperature gradually raised, control in 115 ~ 120 ℃ for two hours.
For atmospheric distillation unit, after the completion of reaction, steamed out of the water in the flask, toluene and excessive methyl isobutyl ketone, remaining light yellow transparent liquid Is the ketone imide, and then to vacuum distillation refining.
Crosslinking test. The time used to determine the crosslinking of the crosslinking agent and the epoxy resin E - 51 is determined by the mixture.
Adhesive performance testing. Use GB/t7123.2-2002 to test the storage period of adhesive; The tensile shear strength of the adhesive was measured in GB/t7124-2008.
The effects of the mmmmam of the material on the conversion rate of diphenylmethylamine were determined by the reaction equation. The molar ratio of methyl-isobutyl ketone and diphenylenediamine was 1: l. At the reaction temperature is 120 ℃, reaction time is 2 hours conditions, methyl isobutyl ketone and the molar ratio of px amine n1 n2 / on the yield of were ketone imide (ketone imide yield by manifold separated from theory of water amount divided by the water rate to calculate).
When methyl isobutyl ketone and diphenyl methylamine mole ratio of 1:1, by diphenyl methylamine boiling point is 295 ℃, the boiling point of methyl isobutyl ketone is 115.8 ℃, the reaction has quite part of methyl isobutyl ketone need to return, and thus the reaction yield is very low. When the material ratio greater than 2.5:1, the yield of ketimine without too big change, and slightly higher than when 2:1, from saving raw materials and easy purification products, choice of methyl isobutyl ketone and diphenyl methylamine optimal molar ratio of 2:1
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Synthesis of diphenylmethylamine. Will dissolve in toluene amines and excess methyl isobutyl ketone (amount of substance ratio 1:2), in the clean flask stand-up, installing water device in the oil bath temperature mixing reaction, heating up to about 106 ℃ began to return, as the condensation water out, the temperature gradually raised, control in 115 ~ 120 ℃ for two hours.
For atmospheric distillation unit, after the completion of reaction, steamed out of the water in the flask, toluene and excessive methyl isobutyl ketone, remaining light yellow transparent liquid Is the ketone imide, and then to vacuum distillation refining.
Crosslinking test. The time used to determine the crosslinking of the crosslinking agent and the epoxy resin E - 51 is determined by the mixture.
Adhesive performance testing. Use GB/t7123.2-2002 to test the storage period of adhesive; The tensile shear strength of the adhesive was measured in GB/t7124-2008.
The effects of the mmmmam of the material on the conversion rate of diphenylmethylamine were determined by the reaction equation. The molar ratio of methyl-isobutyl ketone and diphenylenediamine was 1: l. At the reaction temperature is 120 ℃, reaction time is 2 hours conditions, methyl isobutyl ketone and the molar ratio of px amine n1 n2 / on the yield of were ketone imide (ketone imide yield by manifold separated from theory of water amount divided by the water rate to calculate).
When methyl isobutyl ketone and diphenyl methylamine mole ratio of 1:1, by diphenyl methylamine boiling point is 295 ℃, the boiling point of methyl isobutyl ketone is 115.8 ℃, the reaction has quite part of methyl isobutyl ketone need to return, and thus the reaction yield is very low. When the material ratio greater than 2.5:1, the yield of ketimine without too big change, and slightly higher than when 2:1, from saving raw materials and easy purification products, choice of methyl isobutyl ketone and diphenyl methylamine optimal molar ratio of 2:1
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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