News Details
Modified amine coating crosslinking agent
2017-8-30 12:07:20
Modified amine coating crosslinking agent
Crosslinking agent modified amine coating, including the amidation of polyamine (mainly using C18 fatty amine and multiple amine polycondensation product), polyamide (mainly for the C36 dimer acid and ethylene polyamine condensation product) and amine adduct (mainly amine and epoxy adduct).
Modified amine crosslinking agent is the multiple amine crosslinking agent of chain extender, grafting, salt, introduction of nonpolar groups in the molecules, making it a lipophilic epoxy resin molecular structure of water dispersible crosslinking agent, and modified amine crosslinking agent also as cationic emulsifier for epoxy resin emulsion, two component mixture can be made into a stable emulsion.
Water-based epoxy coatings are interlinked through epoxy resin and crosslinking agent. The properties of crosslinking agents are essential for the physical and chemical properties of the coatings. Modification principle of crosslinking agent is mainly: through modification, increase the hydrophilicity can make its stable dispersion in water, improve the compatibility with epoxy resin, so as to improve the water resistance, corrosion resistance of the coating.
The solubility parameters of the epoxy resin and crosslinking agent can be mixed and crosslinked. On modification method of crosslinking agent is commonly: the use of single epoxy compound or acrylonitrile sealing and to reduce the content of primary amine, although this method reduces the content of primary amine, secondary amine on the skeleton still produce enough crosslinking. This method reduces the overall reactivity of crosslinking agent, extends the application period and improves the compatibility with epoxy resin.
Type II waterborne epoxy system contains mostly NHAP as film-forming agent, the system table dry faster, this is because the use of high relative molecular mass of epoxy resin, only by the evaporation of water can reach the table dry; However, the crosslinking agent should be transferred from the water phase to the dispersed epoxy resin, thus reducing the concentration of the reactants and extending the application period, usually 4-8h.
Chinese name: Diethyl toluene diamine(DETDA)
Crosslinking agent modified amine coating, including the amidation of polyamine (mainly using C18 fatty amine and multiple amine polycondensation product), polyamide (mainly for the C36 dimer acid and ethylene polyamine condensation product) and amine adduct (mainly amine and epoxy adduct).
Modified amine crosslinking agent is the multiple amine crosslinking agent of chain extender, grafting, salt, introduction of nonpolar groups in the molecules, making it a lipophilic epoxy resin molecular structure of water dispersible crosslinking agent, and modified amine crosslinking agent also as cationic emulsifier for epoxy resin emulsion, two component mixture can be made into a stable emulsion.
Water-based epoxy coatings are interlinked through epoxy resin and crosslinking agent. The properties of crosslinking agents are essential for the physical and chemical properties of the coatings. Modification principle of crosslinking agent is mainly: through modification, increase the hydrophilicity can make its stable dispersion in water, improve the compatibility with epoxy resin, so as to improve the water resistance, corrosion resistance of the coating.
The solubility parameters of the epoxy resin and crosslinking agent can be mixed and crosslinked. On modification method of crosslinking agent is commonly: the use of single epoxy compound or acrylonitrile sealing and to reduce the content of primary amine, although this method reduces the content of primary amine, secondary amine on the skeleton still produce enough crosslinking. This method reduces the overall reactivity of crosslinking agent, extends the application period and improves the compatibility with epoxy resin.
Type II waterborne epoxy system contains mostly NHAP as film-forming agent, the system table dry faster, this is because the use of high relative molecular mass of epoxy resin, only by the evaporation of water can reach the table dry; However, the crosslinking agent should be transferred from the water phase to the dispersed epoxy resin, thus reducing the concentration of the reactants and extending the application period, usually 4-8h.
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).
In order to overcome the I type water-borne epoxy coatings applicable period short, poor corrosion resistance and type II epoxy coating containing volatile organic solvent, the shortcomings of uneven coating morphology, paint workers and developed several new epoxy resin system
Ancare2TM AR550, which combines the advantages of type I and type II, has the advantages of long application period, quick drying, zero VOC, low price, etc., the average particle size is only 0.5. Another characteristic of the system is its unique molecular weight distribution, this kind of resin containing a large number of low molecular weight liquid epoxy resin, resin without coalescence solvent can completely coalescence, this resin can be with a variety of water-based crosslinking agent, such as Anquamine401 and Anquamine419.
A brand new water-based epoxy resin whose trademark is called? NewGEW TM #, it is made of modified bisphenol A type epoxy resin and hydrophobic solid amine adduct of the epoxy resin system is the distinctive features of epoxy resins and crosslinking agent are designed for some, have certain hydrophobic, crosslinking agent of epoxy resin with hydrophilic oil-wet balance (HLB) value, changed the past amine state of crosslinking agent is water soluble, improves the matching with the resin.
The epoxy resin improves hydrophilic and is emulsified. The epoxy system is another major improvements: connect the hydrophilic non-ionic surface active agent to the resin and crosslinking agent, this new technology to effectively reduce the dosage of surface active agent and the system does not exist in the free surface active agent, which reduces the coating on the sensitivity of the aqueous solution, to enhance the stability of the system, and help to resin and crosslinking agent of crosslinking reaction.
Water-based coatings crosslinking agent storage methods: under the condition of 10 to 25 ℃, avoid light, sealed storage can reach more than 6 months.
Waterborne coating crosslinking agent: the old ground should remove surface coating (such as wax layer, curing agent, resin coating, etc.) and oil pollution. The ground with heavy oil pollution should be treated properly before construction of high osmotic seal crosslinking agent.
At normal temperature, the lower level fatty amine is the gas, the above is the liquid, the advanced fatty amine is the solid. Lower levels of amine have unpleasant or unpleasant smells. For example, trimethylamine has the smell of fish, budimide and glutaramine, which have the stench of animal carcasses. High - level amine is not volatile and the odor is very small. Aromatic amine is a high boiling liquid or low melting point solid, although the smell is smaller than adipogenic amine, but the toxicity is larger, whether it is inhaled their vapor or the skin contact with it can cause poisoning. Some aromatic amines, such as beta-naphthylamine and benzidine, also have a carcinogenic effect.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
In order to overcome the I type water-borne epoxy coatings applicable period short, poor corrosion resistance and type II epoxy coating containing volatile organic solvent, the shortcomings of uneven coating morphology, paint workers and developed several new epoxy resin system
Ancare2TM AR550, which combines the advantages of type I and type II, has the advantages of long application period, quick drying, zero VOC, low price, etc., the average particle size is only 0.5. Another characteristic of the system is its unique molecular weight distribution, this kind of resin containing a large number of low molecular weight liquid epoxy resin, resin without coalescence solvent can completely coalescence, this resin can be with a variety of water-based crosslinking agent, such as Anquamine401 and Anquamine419.
A brand new water-based epoxy resin whose trademark is called? NewGEW TM #, it is made of modified bisphenol A type epoxy resin and hydrophobic solid amine adduct of the epoxy resin system is the distinctive features of epoxy resins and crosslinking agent are designed for some, have certain hydrophobic, crosslinking agent of epoxy resin with hydrophilic oil-wet balance (HLB) value, changed the past amine state of crosslinking agent is water soluble, improves the matching with the resin.
The epoxy resin improves hydrophilic and is emulsified. The epoxy system is another major improvements: connect the hydrophilic non-ionic surface active agent to the resin and crosslinking agent, this new technology to effectively reduce the dosage of surface active agent and the system does not exist in the free surface active agent, which reduces the coating on the sensitivity of the aqueous solution, to enhance the stability of the system, and help to resin and crosslinking agent of crosslinking reaction.
Water-based coatings crosslinking agent storage methods: under the condition of 10 to 25 ℃, avoid light, sealed storage can reach more than 6 months.
Waterborne coating crosslinking agent: the old ground should remove surface coating (such as wax layer, curing agent, resin coating, etc.) and oil pollution. The ground with heavy oil pollution should be treated properly before construction of high osmotic seal crosslinking agent.
At normal temperature, the lower level fatty amine is the gas, the above is the liquid, the advanced fatty amine is the solid. Lower levels of amine have unpleasant or unpleasant smells. For example, trimethylamine has the smell of fish, budimide and glutaramine, which have the stench of animal carcasses. High - level amine is not volatile and the odor is very small. Aromatic amine is a high boiling liquid or low melting point solid, although the smell is smaller than adipogenic amine, but the toxicity is larger, whether it is inhaled their vapor or the skin contact with it can cause poisoning. Some aromatic amines, such as beta-naphthylamine and benzidine, also have a carcinogenic effect.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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