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The agent of the latent coatings of ketoimide
2017-7-18 12:29:12
The agent of the latent coatings of ketoimide
The agent was modified by methyl-isobutyl ketone to the diphenylamine and the structure of the product was characterized by infrared spectroscopy.
The crosslinking properties and the storage stability of the single component system of the single component system were investigated in terms of the crosslinking temperature, time and intensity. Latent intercourse ketimine class agent experimental 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 instrument and reagent for the subagent experiment of ketoimide: TENSOR27 Fourier infrared spectrometer; NDJS -7 rotational 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)
Diethyltoluenediamine Uses:
The agent was modified by methyl-isobutyl ketone to the diphenylamine and the structure of the product was characterized by infrared spectroscopy.
The crosslinking properties and the storage stability of the single component system of the single component system were investigated in terms of the crosslinking temperature, time and intensity. Latent intercourse ketimine class agent experimental 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 instrument and reagent for the subagent experiment of ketoimide: TENSOR27 Fourier infrared spectrometer; NDJS -7 rotational 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)
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.
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.
The performance test of adhesive adhesives was based on GB/t7123.2-2002 storage period of the adhesive. The tensile shear strength of the adhesive was measured in GB/t7124-2008.
The effect of the molar ratio of methyl isobutyl ketone and diphenylmethylamine on the yield of ketoya. The effects of the mmmmmam on the conversion rate of diphenylmethylamine were determined by the reaction equation. The molar ratio of methyl-isobutyl ketone and diphenylamine 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.
The performance test of adhesive adhesives was based on GB/t7123.2-2002 storage period of the adhesive. The tensile shear strength of the adhesive was measured in GB/t7124-2008.
The effect of the molar ratio of methyl isobutyl ketone and diphenylmethylamine on the yield of ketoya. The effects of the mmmmmam on the conversion rate of diphenylmethylamine were determined by the reaction equation. The molar ratio of methyl-isobutyl ketone and diphenylamine 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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