News Details
Aniline coating crosslinking agent
2017-8-16 11:42:05
Aniline coating crosslinking agent
Ketimine coating crosslinking agent is multivariate amine ketone closed, that is, ketimine crosslinking agent is made up of ketones and multiple primary amine of polycondensation reaction, the reaction is reversible, once the ketone imide encountered water and moisture from the multiple amine solutions and the corresponding ketones, the multivariate amine can and epoxy crosslinking reaction, and underwater crosslinking is suitable for wet conditions.
Ketimine crosslinking agent structure must be hydrolyzed in the presence of water can release the crosslinking reaction of active hydrogen, participate in the crosslinking reaction, in the moist environment, crosslinking agent hydrolysis more quickly, the faster the release of active hydrogen, can more quickly cross-linked epoxy resin.
Marine splash zone is one of the most demanding of Marine environment, sufficient oxygen to the area, the spray impact and moist constantly, coupled with the sunlight, dry-wet alternant, salt concentration, making the region the structure of the corrosion is very serious. According to research, in the splash zone thickness of 6.35 mm steel plate, 5 a punch, and the service life of large bridge coating generally requires more than 15 years, need coating has excellent corrosion resistance and mechanical properties.
The bridge concrete structure is porous, the surface can seepage water, and the substrate is often in a highly humid state. The surface is coated with ordinary paint, which is not expected to be anticorrosive, and its lifespan is usually only half or even lower than the original design life. The splash zone needs to use special wet crosslinking coating, which can be fast in drying speed, continuous crosslinking, abrasion resistance and excellent saltwater performance. In this paper, a kind of epoxy-wet crosslinking coating which can be constructed in the splash zone and has excellent mechanical properties, corrosion resistance and chemical resistance is prepared.
Experimental raw materials: 828 epoxy resin, ketone amine crosslinking agent, cashew oil crosslinking agent, thixotropic agent, adhesion promoter, long rock powder etc.
First division points according to table 1 formula said first resin, thixotropic agent, gas phase silica, adhesion promoter, pigment, filler, the scattered 15 min, fineness and 60 mu m, to join the other raw materials, and then adjust viscosity, flow to hang and so on.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
Ketimine coating crosslinking agent is multivariate amine ketone closed, that is, ketimine crosslinking agent is made up of ketones and multiple primary amine of polycondensation reaction, the reaction is reversible, once the ketone imide encountered water and moisture from the multiple amine solutions and the corresponding ketones, the multivariate amine can and epoxy crosslinking reaction, and underwater crosslinking is suitable for wet conditions.
Ketimine crosslinking agent structure must be hydrolyzed in the presence of water can release the crosslinking reaction of active hydrogen, participate in the crosslinking reaction, in the moist environment, crosslinking agent hydrolysis more quickly, the faster the release of active hydrogen, can more quickly cross-linked epoxy resin.
Marine splash zone is one of the most demanding of Marine environment, sufficient oxygen to the area, the spray impact and moist constantly, coupled with the sunlight, dry-wet alternant, salt concentration, making the region the structure of the corrosion is very serious. According to research, in the splash zone thickness of 6.35 mm steel plate, 5 a punch, and the service life of large bridge coating generally requires more than 15 years, need coating has excellent corrosion resistance and mechanical properties.
The bridge concrete structure is porous, the surface can seepage water, and the substrate is often in a highly humid state. The surface is coated with ordinary paint, which is not expected to be anticorrosive, and its lifespan is usually only half or even lower than the original design life. The splash zone needs to use special wet crosslinking coating, which can be fast in drying speed, continuous crosslinking, abrasion resistance and excellent saltwater performance. In this paper, a kind of epoxy-wet crosslinking coating which can be constructed in the splash zone and has excellent mechanical properties, corrosion resistance and chemical resistance is prepared.
Experimental raw materials: 828 epoxy resin, ketone amine crosslinking agent, cashew oil crosslinking agent, thixotropic agent, adhesion promoter, long rock powder etc.
First division points according to table 1 formula said first resin, thixotropic agent, gas phase silica, adhesion promoter, pigment, filler, the scattered 15 min, fineness and 60 mu m, to join the other raw materials, and then adjust viscosity, flow to hang and so on.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
A reagent grade additives
The coating is designed according to the corresponding design. After testing, the final technical specifications of the supporting coating meet the standard requirements completely and can achieve good results in the concrete structure. At the same time, it has high volume and high resistance to flow. A coating can achieve high film thickness and can reduce the process. VOC can be as low as 160 g/L.
Epoxy resin has many characteristics, such as good adhesion, outstanding resistance to chemicals, with different crosslinking agent and flexible use, can satisfy different performance requirements for coating, epoxy coating its at the same time with polyurethane, acrylic acid, epoxy, fluorine carbon, a variety of types such as polysiloxane surface QiJunYou good compatibility.
The low molecular weight of 828 epoxy resin has low viscosity, which is easy to make high solid and low VOC coating variety. High solid coatings coating rate is high, the performance-to-price ratio is high, its low VOC can ensure that products meet the requirements of relevant laws and regulations, protect the environment, at the same time it and crosslinking agent form relatively dense crosslinked structure, excellent solvent resistance and acid and alkali.
Cashew shell oil modified amine epoxy crosslinking agent is very special molecular structure, both the benzene ring structure, along with a side of long carbon chain containing unsaturated bond, benzene ring side also has a weak acid hydroxy structure. The stable and excellent benzene ring structure makes the product anti-chemical corrosion and fast crosslinking performance excellent, long chain makes the crosslinking system flexible and good.
Weak acid phenol hydroxyl is epoxy cross-linking reaction of catalyst, the crosslinking reaction at low temperature can also be quick, the advantages of polyamide is the traditional type of crosslinking agent.
Its long carbon chain structure, which not only improves the flexibility of crosslinking system, and improves the crosslinking system of hydrophobic, reduce the surface tension of water, thus increase the crosslinking system was coated on the surface of the liquid and the permeability, has a good adhesion on wet surface, which is suitable for the coating on the surface of the wet.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
The coating is designed according to the corresponding design. After testing, the final technical specifications of the supporting coating meet the standard requirements completely and can achieve good results in the concrete structure. At the same time, it has high volume and high resistance to flow. A coating can achieve high film thickness and can reduce the process. VOC can be as low as 160 g/L.
Epoxy resin has many characteristics, such as good adhesion, outstanding resistance to chemicals, with different crosslinking agent and flexible use, can satisfy different performance requirements for coating, epoxy coating its at the same time with polyurethane, acrylic acid, epoxy, fluorine carbon, a variety of types such as polysiloxane surface QiJunYou good compatibility.
The low molecular weight of 828 epoxy resin has low viscosity, which is easy to make high solid and low VOC coating variety. High solid coatings coating rate is high, the performance-to-price ratio is high, its low VOC can ensure that products meet the requirements of relevant laws and regulations, protect the environment, at the same time it and crosslinking agent form relatively dense crosslinked structure, excellent solvent resistance and acid and alkali.
Cashew shell oil modified amine epoxy crosslinking agent is very special molecular structure, both the benzene ring structure, along with a side of long carbon chain containing unsaturated bond, benzene ring side also has a weak acid hydroxy structure. The stable and excellent benzene ring structure makes the product anti-chemical corrosion and fast crosslinking performance excellent, long chain makes the crosslinking system flexible and good.
Weak acid phenol hydroxyl is epoxy cross-linking reaction of catalyst, the crosslinking reaction at low temperature can also be quick, the advantages of polyamide is the traditional type of crosslinking agent.
Its long carbon chain structure, which not only improves the flexibility of crosslinking system, and improves the crosslinking system of hydrophobic, reduce the surface tension of water, thus increase the crosslinking system was coated on the surface of the liquid and the permeability, has a good adhesion on wet surface, which is suitable for the coating on the surface of the wet.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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