News Details
It is not necessary to use an I - type water-based epoxy paint crosslinking agent with organic acid
2017-8-22 11:41:09
It is not necessary to use an I - type water-based epoxy paint crosslinking agent with organic acid
Do not need to use organic acid salt of type I waterborne epoxy crosslinking agent synthesis methods: Stark, benzene dimethylamine reaction between epoxy resin and excess epoxy amine adduct generated end, reacts with end carboxyl polyether glycol generate amide, amine, the sealing side type I waterborne epoxy crosslinking agent.
The new water-based epoxy crosslinking agent products, Epilink701, Anquamine670, Anquamine456, have been successfully applied to steel components.
Epilink701 is a polymer quality fat amine emulsion, solid mass fraction of 55%. The product can emulsify liquid epoxy resin smoothly. The molecular weight of the crosslinking agent is high and the drying time is much faster than the high VOC solvent coating.
Now through the liquid epoxy emulsion crosslinking agent of good film forming and dry, may be obtained with good resistance to water and wet sticky relay, zero VOC content of dry coating, can be used for metal protective primer and self-leveling floor coatings.
Anquamine670 is an aqueous solution of modified aliphatic amine, with a solid mass score of 65%. This crosslinking agent is easy to emulsify liquid epoxy resin and form a uniform membrane, with good adhesion to most base materials.
The type I - based epoxy crosslinking agent, which does not require organic acids to form salt, enhances the water resistance and corrosion resistance, and the drying time is shorter than the traditional waterborne crosslinking agent. The main characteristic of this product is that it is compatible with ordinary Portland cement. Green # concrete coating and epoxy cement mortar.
Anquamine456 is a modified product based on hydrophobic lipocylamine PCPA, which has excellent compatibility with epoxy resin. Most type I part as emulsifier, crosslinking agent used amine and the product adopted by the method is a kind of nonionic surfactant, connected to the excessive high hydrophobic - hydrophobic oil structure, so that half of the modified amine remain very low solubility in water and can quickly spread to the water at the same time.
Chinese name: Diethyl toluene diamine(DETDA)
Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
Do not need to use organic acid salt of type I waterborne epoxy crosslinking agent synthesis methods: Stark, benzene dimethylamine reaction between epoxy resin and excess epoxy amine adduct generated end, reacts with end carboxyl polyether glycol generate amide, amine, the sealing side type I waterborne epoxy crosslinking agent.
The new water-based epoxy crosslinking agent products, Epilink701, Anquamine670, Anquamine456, have been successfully applied to steel components.
Epilink701 is a polymer quality fat amine emulsion, solid mass fraction of 55%. The product can emulsify liquid epoxy resin smoothly. The molecular weight of the crosslinking agent is high and the drying time is much faster than the high VOC solvent coating.
Now through the liquid epoxy emulsion crosslinking agent of good film forming and dry, may be obtained with good resistance to water and wet sticky relay, zero VOC content of dry coating, can be used for metal protective primer and self-leveling floor coatings.
Anquamine670 is an aqueous solution of modified aliphatic amine, with a solid mass score of 65%. This crosslinking agent is easy to emulsify liquid epoxy resin and form a uniform membrane, with good adhesion to most base materials.
The type I - based epoxy crosslinking agent, which does not require organic acids to form salt, enhances the water resistance and corrosion resistance, and the drying time is shorter than the traditional waterborne crosslinking agent. The main characteristic of this product is that it is compatible with ordinary Portland cement. Green # concrete coating and epoxy cement mortar.
Anquamine456 is a modified product based on hydrophobic lipocylamine PCPA, which has excellent compatibility with epoxy resin. Most type I part as emulsifier, crosslinking agent used amine and the product adopted by the method is a kind of nonionic surfactant, connected to the excessive high hydrophobic - hydrophobic oil structure, so that half of the modified amine remain very low solubility in water and can quickly spread to the water at the same time.
Chinese name: Diethyl toluene diamine(DETDA)
Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
Hazard Class: 6.1
In order to ensure that the coating can be completely cross-linked at room temperature, the low water-soluble and low Tg flexible amine grafting can be grafted to the modified lipocyte by means of dual functional group coupling agent.
Commonly used coupling agents are epoxy and dimer fatty acids, while water-soluble polymers are usually polyoxyethylene amine. The coated film made of this crosslinking agent has high flexibility and impact strength, low drying rate, good film resistance and corrosion resistance, and is an ideal corrosion resistant paint. The use of these new crosslinking agents has greatly improved the performance of i-type epoxy coatings in corrosion resistance and fast drying, and has been applied to metal anti-corrosion coatings.
Ji-liang zhou to polyether polyols two glycidyl ether (DGEPG), triethylene tetramine (TETA) and liquid epoxy resin (EPON828) as raw material, using two step synthesis method of a kind of nonionic type I extender chain water-based epoxy crosslinking agent. In this paper, the TETA - dgepgs were used to increase the chain reaction of TETA, and the hydrophilic flexible polyether chain was introduced into the crosslinking agent.
Then use EPON828 chain extension reaction of TETA - DGEPG in crosslinking agent molecules into epoxy resin molecule chain segment, in order to improve the compatibility of crosslinking agent and liquid epoxy resin, the crosslinking agent has the function of the emulsification liquid epoxy resin finally vacuum distillation to remove the solvent and water to solid mass fraction is 50% ~ 50%, the preparation of a new nonionic type I from emulsified waterborne epoxy crosslinking agent.
Because part of the substrate is transparent, the emission NIR energy is absorbed through the powder coating and is absorbed by the entire coating. In internal absorption of energy in addition to the heating coating, coating can directly promote the crosslinking, because of the near infrared radiation heat activation powder of polar groups, modulation and driving force of the NIR crosslinking process as follows: (1) direct heating; Due to the activation of polar molecules, additional crosslinking mechanisms are induced; Because of the high degree of transparency of the NlR, a large number of NIR can penetrate the coating to achieve three-dimensional heating.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
In order to ensure that the coating can be completely cross-linked at room temperature, the low water-soluble and low Tg flexible amine grafting can be grafted to the modified lipocyte by means of dual functional group coupling agent.
Commonly used coupling agents are epoxy and dimer fatty acids, while water-soluble polymers are usually polyoxyethylene amine. The coated film made of this crosslinking agent has high flexibility and impact strength, low drying rate, good film resistance and corrosion resistance, and is an ideal corrosion resistant paint. The use of these new crosslinking agents has greatly improved the performance of i-type epoxy coatings in corrosion resistance and fast drying, and has been applied to metal anti-corrosion coatings.
Ji-liang zhou to polyether polyols two glycidyl ether (DGEPG), triethylene tetramine (TETA) and liquid epoxy resin (EPON828) as raw material, using two step synthesis method of a kind of nonionic type I extender chain water-based epoxy crosslinking agent. In this paper, the TETA - dgepgs were used to increase the chain reaction of TETA, and the hydrophilic flexible polyether chain was introduced into the crosslinking agent.
Then use EPON828 chain extension reaction of TETA - DGEPG in crosslinking agent molecules into epoxy resin molecule chain segment, in order to improve the compatibility of crosslinking agent and liquid epoxy resin, the crosslinking agent has the function of the emulsification liquid epoxy resin finally vacuum distillation to remove the solvent and water to solid mass fraction is 50% ~ 50%, the preparation of a new nonionic type I from emulsified waterborne epoxy crosslinking agent.
Because part of the substrate is transparent, the emission NIR energy is absorbed through the powder coating and is absorbed by the entire coating. In internal absorption of energy in addition to the heating coating, coating can directly promote the crosslinking, because of the near infrared radiation heat activation powder of polar groups, modulation and driving force of the NIR crosslinking process as follows: (1) direct heating; Due to the activation of polar molecules, additional crosslinking mechanisms are induced; Because of the high degree of transparency of the NlR, a large number of NIR can penetrate the coating to achieve three-dimensional heating.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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