News Details
Aromatic diamine coating crosslinking agent
2017-3-15 18:04:11
Aromatic diamine coating crosslinking agent,Aromatic amine is taken seriously due to the high Tg, but due to its toxic and limits the applications. After the modification of aromatic diamine class crosslinking agent has high Tg and low toxicity, low water absorption, good comprehensive performance advantages.
Research in recent years more aromatic diamine class crosslinking agent has 2 amino diphenyl sulfone (DDS), 2 amino diphenyl methane (DDM), m-phenylene diamine (m), PDA etc., of which most mature DDS research, as is commonly used in high performance epoxy crosslinking agent.
DDS is used as the latent epoxy resin intercourse agent, compared with MP DA, DDM and other aromatic diamine, because of its molecules have strong electron-withdrawing sulfone, greatly reduce the reactivity, its applicable period also growth.
In the absence of promoter, 100 grams of the application of the epoxy resin complexes period up to 1 year, crosslinking temperature to 200 ℃ in general. In order to decrease the crosslinking temperature, often add to the promoter in order to realize temperature crosslinking. In recent years in order to improve the system performance of damp and hot and toughness, to the modification of DDS, developed a variety of polyether diamine crosslinking agent, makes them in dry heat resistance is reduced, the diamine due to long distance between the ends of amino, resulting in a decrease of suction point amino, and it has excellent resistance to impact.
Diamino diphenyl sulfone, also known as 4, 4 '- diphenyl sulfone diamine, dapsone, double (4 - amino phenyl) sulfone, referred to as "DDS, the molecular weight of 248.30. White or pale yellow crystalline powder, exposed to air or will see light oxidation into pink. Relative density 1.33. The melting point of 175 ~ 181 ℃. Thermal stability of high in the air, broken down slowly to the start of the 280 ℃.
Soluble in acetone, soluble in ethanol, tetrahydrofuran, methylene chloride and other commonly used solvents, almost insoluble in water. Molecular structure of DDS electron-withdrawing sulfone is contained in the base, causes the DDM small reactivity, low degree of reaction with epoxy resin. Low toxicity.
English name: diamino diphenyl sulfone, also known as 4, 4 '- diphenyl sulfone diamine, dapsone, double (4 - amino phenyl) sulfone, referred to as "DDS, the molecular weight of 248.30. White or pale yellow crystalline powder, exposed to air or will see light oxidation into pink. Relative density 1.33. The melting point of 175 ~ 181 ℃
. Thermal stability of high in the air, broken down slowly to the start of the 280 ℃. Soluble in acetone, soluble in ethanol, tetrahydrofuran, methylene chloride and other commonly used solvents, almost insoluble in water. Molecular structure of DDS electron-withdrawing sulfone is contained in the base, causes the DDM small reactivity, low degree of reaction with epoxy resin. Low toxicity.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine packing： 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).
Diamino diphenyl methane. Usually pale yellow crystal, toxic, high temperature resistant crosslinking agent, have an effect on nerves. Will involve in the process of synthesis of aniline and formaldehyde, phosgene, if there is leakage will impact on the environment, are commonly used as a crosslinking agent of epoxy resin and dye.
Diamino diphenyl methane is also called a brace diphenylamine, hereinafter referred to as DDM or MDA, the molecular weight of 198.3. White crystalline powder, relative density (20 ℃ / 4 ℃) 1.15, melting point of 89 ~ 90 ℃, boiling point 232 ℃ (1.2 kPa). Soluble in acetone, methanol. Hardly soluble in benzene, ether. Toxic and LD50 252 mg/kg.
Is used as the crosslinking agent of epoxy resin, the dosage of reference 25 to 30 quality of rubber, applicable period of 8 h (100 g), crosslinking condition 2 h + 100 ℃ / 100 ℃ / 2 h. Crosslinked heat deformation temperature of 155 ℃. Rubber antioxidant and protective agent, also used for the determination of tungsten and sulfate.
M-phenylene diamine (English name m - Phenylenediamine) and 1, 3 - phenylene diamine (1, 3 - Benzenediamine, 1, 3 - Phenylenediamine), 1, 3-2 amino benzene (1, 3 - Diaminobenzene), hereinafter referred to as MPD. Under normal temperature for white needle crystal, soluble in ethanol, water, chloroform, acetone, dimethyl amide, slightly soluble in ether, carbon tetrachloride, hardly soluble in benzene, toluene, butyl alcohol. In the air is not stable, easy to become pink.
This product is flammable, burning decomposition for carbon monoxide, carbon dioxide and nitrogen oxides. M-phenylene diamine as toxic chemicals, stimulate the eyes and skin.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Research in recent years more aromatic diamine class crosslinking agent has 2 amino diphenyl sulfone (DDS), 2 amino diphenyl methane (DDM), m-phenylene diamine (m), PDA etc., of which most mature DDS research, as is commonly used in high performance epoxy crosslinking agent.
DDS is used as the latent epoxy resin intercourse agent, compared with MP DA, DDM and other aromatic diamine, because of its molecules have strong electron-withdrawing sulfone, greatly reduce the reactivity, its applicable period also growth.
In the absence of promoter, 100 grams of the application of the epoxy resin complexes period up to 1 year, crosslinking temperature to 200 ℃ in general. In order to decrease the crosslinking temperature, often add to the promoter in order to realize temperature crosslinking. In recent years in order to improve the system performance of damp and hot and toughness, to the modification of DDS, developed a variety of polyether diamine crosslinking agent, makes them in dry heat resistance is reduced, the diamine due to long distance between the ends of amino, resulting in a decrease of suction point amino, and it has excellent resistance to impact.
Diamino diphenyl sulfone, also known as 4, 4 '- diphenyl sulfone diamine, dapsone, double (4 - amino phenyl) sulfone, referred to as "DDS, the molecular weight of 248.30. White or pale yellow crystalline powder, exposed to air or will see light oxidation into pink. Relative density 1.33. The melting point of 175 ~ 181 ℃. Thermal stability of high in the air, broken down slowly to the start of the 280 ℃.
Soluble in acetone, soluble in ethanol, tetrahydrofuran, methylene chloride and other commonly used solvents, almost insoluble in water. Molecular structure of DDS electron-withdrawing sulfone is contained in the base, causes the DDM small reactivity, low degree of reaction with epoxy resin. Low toxicity.
English name: diamino diphenyl sulfone, also known as 4, 4 '- diphenyl sulfone diamine, dapsone, double (4 - amino phenyl) sulfone, referred to as "DDS, the molecular weight of 248.30. White or pale yellow crystalline powder, exposed to air or will see light oxidation into pink. Relative density 1.33. The melting point of 175 ~ 181 ℃
. Thermal stability of high in the air, broken down slowly to the start of the 280 ℃. Soluble in acetone, soluble in ethanol, tetrahydrofuran, methylene chloride and other commonly used solvents, almost insoluble in water. Molecular structure of DDS electron-withdrawing sulfone is contained in the base, causes the DDM small reactivity, low degree of reaction with epoxy resin. Low toxicity.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine packing： 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).
Diamino diphenyl methane. Usually pale yellow crystal, toxic, high temperature resistant crosslinking agent, have an effect on nerves. Will involve in the process of synthesis of aniline and formaldehyde, phosgene, if there is leakage will impact on the environment, are commonly used as a crosslinking agent of epoxy resin and dye.
Diamino diphenyl methane is also called a brace diphenylamine, hereinafter referred to as DDM or MDA, the molecular weight of 198.3. White crystalline powder, relative density (20 ℃ / 4 ℃) 1.15, melting point of 89 ~ 90 ℃, boiling point 232 ℃ (1.2 kPa). Soluble in acetone, methanol. Hardly soluble in benzene, ether. Toxic and LD50 252 mg/kg.
Is used as the crosslinking agent of epoxy resin, the dosage of reference 25 to 30 quality of rubber, applicable period of 8 h (100 g), crosslinking condition 2 h + 100 ℃ / 100 ℃ / 2 h. Crosslinked heat deformation temperature of 155 ℃. Rubber antioxidant and protective agent, also used for the determination of tungsten and sulfate.
M-phenylene diamine (English name m - Phenylenediamine) and 1, 3 - phenylene diamine (1, 3 - Benzenediamine, 1, 3 - Phenylenediamine), 1, 3-2 amino benzene (1, 3 - Diaminobenzene), hereinafter referred to as MPD. Under normal temperature for white needle crystal, soluble in ethanol, water, chloroform, acetone, dimethyl amide, slightly soluble in ether, carbon tetrachloride, hardly soluble in benzene, toluene, butyl alcohol. In the air is not stable, easy to become pink.
This product is flammable, burning decomposition for carbon monoxide, carbon dioxide and nitrogen oxides. M-phenylene diamine as toxic chemicals, stimulate the eyes and skin.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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