News Details
Two hydrazide crosslinking agent
2017-4-21 15:38:55
Two hydrazide crosslinking agent, belongs to the amine crosslinking agent.
Two hydrazide crosslinking agent in addition to the individual as a crosslinking agent, also can be used as dicyandiamide crosslinking promoter. Two hydrazide. It is the most commonly used crosslinking agent for sebacate hydrazide. Melting point of 185? - 190? . The amount of epoxy resin powder coating of about 7%.
Crosslinking conditions generally for 180? / 15 min or 170? / 20 min. Each second hydrazide has six lively H atoms in the molecule (dicyandiamide has four), reaction junction.
Advantages: relative dicyandiamide coating physical and mechanical performance is good, especially with long carbon chain structure and good flexibility; And epoxy resin compatibility good, do not need to add crosslinking accelerator; Yellowing resistance, suitable for white or light color powder coating. Distilled water and 30% resistant - H2SO4 solution is more than 30 days, and as a comparison sample dicyandiamide 25 days is black. Disadvantages: high cost, have certain 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).
Sebacate hydrazine is a kind of chemicals, molecular formula is C10H22N4O2.
Sebacate hydrazide is white crystalline powder, insoluble water, slightly soluble in acetone, acetic anhydride and acylation reaction can occur or chloride
Sebacate hydrazide descriptors: appearance white crystalline powder, more than 185 ℃, melting point insoluble water, slightly soluble in acetone, with acetic anhydride or chloride can acylation reaction, is an important amide hydrazine compounds.
Sebacate hydrazide (SPH) is a kind of high melting point compound powder, made by organic acid and hydrazine reaction. It can be used as coupling agent of epoxy resin (EP) latent intercourse. EP/SPH for viscous material system of powder coating film has very good flexibility, water resistance, weather resistance, corrosion resistance, insulation and decoration.
Due to the system comprehensive performance is superior; In the decorative powder, insulation powder, smoldering powder, electrical powder, heavy-duty powder used in the well, in today's domestic and foreign, especially the manufacturing quality and high temperature fast heavy-duty powder and oil pipeline, spaceflight, aviation fuel, in areas such as indispensable latent sexual coupling agent. And increase strength in epoxy resin powder, glass fiber reinforced plastic products, such as side effect is very ideal. The products are highly trusted by customers at home and abroad.
Used as type latent epoxy resin adhesives crosslinking agent, the dosage of reference 7 ~ 8, applicable period > 3 months. Crosslinking conditions of 150 ℃ / 20 ~ 30 min. Lower than the dicyandiamide crosslinking temperature, short crosslinking time, good water resistance, high bonding strength, 30 min 150 ℃ / crosslinking of shear strength of 24.5 MPa. Crosslinked heat deformation temperature of 160 ~ 165 ℃. Also used as a modified rapid crosslinking poly vinyl acetate emulsion crosslinking agent, increase initial bonding strength and ultimate strength and water resistance.
Sebacate hydrazide (Sebacic Acid Dihydr - azide decyl hydrazine), is the importance of hydrazine hydrazide derivatives were and representative compounds, molecular formula C10H22N4O2, appearance for white scaly crystalline powder, melting point 188 ℃, widely used for a variety of polymer materials. Before and after the eighty s, many with decyl hydrazine epoxy resin formula, used for powder coating, adhesive, plastic bags and encapsulation of electronic components, etc.
Application of infrared spectrum analysis of hydrazine sebacate acid cross-linked epoxy cross-linking reaction mechanism studies show that the ratio of sebacate hydrazide for 1/4 mol, there is the highest the crosslinking density of the glass transition temperature and the maximum rho (E '), the Tg at 150 ℃.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Two hydrazide crosslinking agent in addition to the individual as a crosslinking agent, also can be used as dicyandiamide crosslinking promoter. Two hydrazide. It is the most commonly used crosslinking agent for sebacate hydrazide. Melting point of 185? - 190? . The amount of epoxy resin powder coating of about 7%.
Crosslinking conditions generally for 180? / 15 min or 170? / 20 min. Each second hydrazide has six lively H atoms in the molecule (dicyandiamide has four), reaction junction.
Advantages: relative dicyandiamide coating physical and mechanical performance is good, especially with long carbon chain structure and good flexibility; And epoxy resin compatibility good, do not need to add crosslinking accelerator; Yellowing resistance, suitable for white or light color powder coating. Distilled water and 30% resistant - H2SO4 solution is more than 30 days, and as a comparison sample dicyandiamide 25 days is black. Disadvantages: high cost, have certain 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).
Sebacate hydrazine is a kind of chemicals, molecular formula is C10H22N4O2.
Sebacate hydrazide is white crystalline powder, insoluble water, slightly soluble in acetone, acetic anhydride and acylation reaction can occur or chloride
Sebacate hydrazide descriptors: appearance white crystalline powder, more than 185 ℃, melting point insoluble water, slightly soluble in acetone, with acetic anhydride or chloride can acylation reaction, is an important amide hydrazine compounds.
Sebacate hydrazide (SPH) is a kind of high melting point compound powder, made by organic acid and hydrazine reaction. It can be used as coupling agent of epoxy resin (EP) latent intercourse. EP/SPH for viscous material system of powder coating film has very good flexibility, water resistance, weather resistance, corrosion resistance, insulation and decoration.
Due to the system comprehensive performance is superior; In the decorative powder, insulation powder, smoldering powder, electrical powder, heavy-duty powder used in the well, in today's domestic and foreign, especially the manufacturing quality and high temperature fast heavy-duty powder and oil pipeline, spaceflight, aviation fuel, in areas such as indispensable latent sexual coupling agent. And increase strength in epoxy resin powder, glass fiber reinforced plastic products, such as side effect is very ideal. The products are highly trusted by customers at home and abroad.
Used as type latent epoxy resin adhesives crosslinking agent, the dosage of reference 7 ~ 8, applicable period > 3 months. Crosslinking conditions of 150 ℃ / 20 ~ 30 min. Lower than the dicyandiamide crosslinking temperature, short crosslinking time, good water resistance, high bonding strength, 30 min 150 ℃ / crosslinking of shear strength of 24.5 MPa. Crosslinked heat deformation temperature of 160 ~ 165 ℃. Also used as a modified rapid crosslinking poly vinyl acetate emulsion crosslinking agent, increase initial bonding strength and ultimate strength and water resistance.
Sebacate hydrazide (Sebacic Acid Dihydr - azide decyl hydrazine), is the importance of hydrazine hydrazide derivatives were and representative compounds, molecular formula C10H22N4O2, appearance for white scaly crystalline powder, melting point 188 ℃, widely used for a variety of polymer materials. Before and after the eighty s, many with decyl hydrazine epoxy resin formula, used for powder coating, adhesive, plastic bags and encapsulation of electronic components, etc.
Application of infrared spectrum analysis of hydrazine sebacate acid cross-linked epoxy cross-linking reaction mechanism studies show that the ratio of sebacate hydrazide for 1/4 mol, there is the highest the crosslinking density of the glass transition temperature and the maximum rho (E '), the Tg at 150 ℃.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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