News Details
Modified polyamide coatings crosslinking agent
2017-8-25 17:20:49
Modified polyamide coatings crosslinking agent
The modified polyamide coating crosslinking agent has better comprehensive performance, but the thermal deformation temperature has to be further improved.To this end, often to join a small amount (about 8% of the proportion of the crosslinking agent) m-phenylene diamine or 2 amino diphenyl methane, thermal deformation temperature 30 ℃ or so can be improved.
The representative low molecular weight modified polyamide crosslinking agent is v-115, v-125 and v-140.
Research indicates that determined by amidation amine value degree and the ratio of epoxy resin, in keeping the crosslinking content flexibility and impact resistance at the same time, the crosslinking agent can improve the modified polyamides its rigidity, heat resistance and chemical resistance.The C20 long chain unsaturated dimethyl ester and a variety of binary amine reactions can be made into a variety of polyamide.As the relative molecular weight increases, the tensile shear strength and the stripping intensity increase.
The new epoxy-crosslinking agent, cy-f206, is composed of some substances that may form strong hydrogen bonds in the original aliphatic cross-linking agent and the addition of an amide crosslinking agent EPI -3055.
EPI - 3055 do not contain active amine, low relative molecular mass and resin chain length, good wet bondability, good flowing property, can significantly improve the pigment wetting dispersibility, there will be no pigment flocculation and color separation, has the very good hardness and chemical character, suitable for epoxy self-leveling coatings.
In addition, Versamid224-229 series of modified polyamide and Aradur450 modified polyamide, all is will react with a small amount of epoxy resin, polyamide products to reduce free amine.Do not need to be cooked, reduce the salt reaction in air and CO2, can be constructed in cold climate.
Modified low molecular weight polyamide crosslinking agent.It is made of epoxy polyamide coatings with strong adhesion, aging resistance, seawater resistance and chemical resistance.According to the introduction, this coating is widely used as an ocean-going ship shell paint, deck paint, aircraft carrier's aircraft track paint and chemical machinery corrosion resistant paint.
Chinese name: Diethyl toluene diamine(DETDA)
Physical and chemical properties: light yellow transparent liquid, slightly soluble in water, soluble in alcohols, ethers, ketones and other polar organic solvents, and polyether, polyester polyol compatibility.
Density 1.022
Viscosity (20 ℃) ??mPa·ss290±10
Pour Point ℃-9
Boiling point of310°C
The modified polyamide coating crosslinking agent has better comprehensive performance, but the thermal deformation temperature has to be further improved.To this end, often to join a small amount (about 8% of the proportion of the crosslinking agent) m-phenylene diamine or 2 amino diphenyl methane, thermal deformation temperature 30 ℃ or so can be improved.
The representative low molecular weight modified polyamide crosslinking agent is v-115, v-125 and v-140.
Research indicates that determined by amidation amine value degree and the ratio of epoxy resin, in keeping the crosslinking content flexibility and impact resistance at the same time, the crosslinking agent can improve the modified polyamides its rigidity, heat resistance and chemical resistance.The C20 long chain unsaturated dimethyl ester and a variety of binary amine reactions can be made into a variety of polyamide.As the relative molecular weight increases, the tensile shear strength and the stripping intensity increase.
The new epoxy-crosslinking agent, cy-f206, is composed of some substances that may form strong hydrogen bonds in the original aliphatic cross-linking agent and the addition of an amide crosslinking agent EPI -3055.
EPI - 3055 do not contain active amine, low relative molecular mass and resin chain length, good wet bondability, good flowing property, can significantly improve the pigment wetting dispersibility, there will be no pigment flocculation and color separation, has the very good hardness and chemical character, suitable for epoxy self-leveling coatings.
In addition, Versamid224-229 series of modified polyamide and Aradur450 modified polyamide, all is will react with a small amount of epoxy resin, polyamide products to reduce free amine.Do not need to be cooked, reduce the salt reaction in air and CO2, can be constructed in cold climate.
Modified low molecular weight polyamide crosslinking agent.It is made of epoxy polyamide coatings with strong adhesion, aging resistance, seawater resistance and chemical resistance.According to the introduction, this coating is widely used as an ocean-going ship shell paint, deck paint, aircraft carrier's aircraft track paint and chemical machinery corrosion resistant paint.
Chinese name: Diethyl toluene diamine(DETDA)
Physical and chemical properties: light yellow transparent liquid, slightly soluble in water, soluble in alcohols, ethers, ketones and other polar organic solvents, and polyether, polyester polyol compatibility.
Density 1.022
Viscosity (20 ℃) ??mPa·ss290±10
Pour Point ℃-9
Boiling point of310°C
Flash Point°C161.1°C
Crosslinking in addition, the preparation of the adhesives have good flexibility and low temperature after not brittle, in zong-han wu, such as: the development of epoxy resin coating of normal temperature cross-linking agent dynamic components such as plane, automobile and ship the coherence of alternative welding and riveting.
Hu high equality by low molecular weight polyamide with phenolic aldehyde amine compound to form a new crosslinking agent to crosslinked epoxy resins, on the one hand to enhance the reactivity of the polyamide, on the other hand to improve the flexibility and heat resistance properties of crosslinked content.It was proved that the composite ratio of polyamide and phenolics was 1:2.
Polyamide is ductile angular translucent or milk white crystalline resin, as the molecular weight polyamide engineering plastics, as a general rule, be 1.5 30000 polyamide has high mechanical strength, high softening point, heat resistance, low friction coefficient, wear resistance, self-lubrication, shock resistance and sound absorption, oil resistant, resistant to weak acid, alkali and solvents, good electrical insulation, self-extinguishing, non-toxic, odourless, good weather resistance, dyeing sex differences.Polyamide and fiberglass affinity are very good.
The appearance of polyamide is transparent or opaque milky white or yellowish granule, apparent horniness, hard products have glossy surface.The density of polyamide (crystalline phase density, amorphous density and density of general molding products) is different.The density of polyamide 6 and polyamide 6fi is high, as the content of methyl in the molecules of central Asia increases and the content of phthalein (-hco 1) decreases, the crystallinity of polyamide decreases and the density decreases.
Polyamide is a kind of semi-crystalline engineering plastics with crystalline and non-crystalline regions.Crystallinity is the percentage of crystals.The crystallinity has great influence on the thermal performance of polyamide.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Crosslinking in addition, the preparation of the adhesives have good flexibility and low temperature after not brittle, in zong-han wu, such as: the development of epoxy resin coating of normal temperature cross-linking agent dynamic components such as plane, automobile and ship the coherence of alternative welding and riveting.
Hu high equality by low molecular weight polyamide with phenolic aldehyde amine compound to form a new crosslinking agent to crosslinked epoxy resins, on the one hand to enhance the reactivity of the polyamide, on the other hand to improve the flexibility and heat resistance properties of crosslinked content.It was proved that the composite ratio of polyamide and phenolics was 1:2.
Polyamide is ductile angular translucent or milk white crystalline resin, as the molecular weight polyamide engineering plastics, as a general rule, be 1.5 30000 polyamide has high mechanical strength, high softening point, heat resistance, low friction coefficient, wear resistance, self-lubrication, shock resistance and sound absorption, oil resistant, resistant to weak acid, alkali and solvents, good electrical insulation, self-extinguishing, non-toxic, odourless, good weather resistance, dyeing sex differences.Polyamide and fiberglass affinity are very good.
The appearance of polyamide is transparent or opaque milky white or yellowish granule, apparent horniness, hard products have glossy surface.The density of polyamide (crystalline phase density, amorphous density and density of general molding products) is different.The density of polyamide 6 and polyamide 6fi is high, as the content of methyl in the molecules of central Asia increases and the content of phthalein (-hco 1) decreases, the crystallinity of polyamide decreases and the density decreases.
Polyamide is a kind of semi-crystalline engineering plastics with crystalline and non-crystalline regions.Crystallinity is the percentage of crystals.The crystallinity has great influence on the thermal performance of polyamide.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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