News Details
Epoxy resin coating crosslinking agent crosslinking stage
2017-7-24 16:51:02
Epoxy resin coating crosslinking agent crosslinking stage
1. Liquid - operation time
Operation time (also working time or use period) is a part of crosslinking time. After mixing, the mixture of resin/crosslinking agent is still liquid and can work and suitable for application. In order to ensure reliable adhesion, all construction and positioning should be done within the time of delivery.
2. Gel - enter crosslinking
The mixture begins to enter the crosslinking phase (also known as the maturation phase) when it begins to gel or "mutate". The epoxy does not have long working hours, and it will lose its viscosity. There is no interference at this stage. It will become a hard rubber-like soft gel that you can press with your thumb. Since the mixture is only locally crosslinked, the newly used epoxy resin can still be linked to it, so the unprocessed surface can still be glued or reactive. In any case, the ability to approach the crosslinking mixture is diminishing.
3. Solid - final crosslinking
The epoxy mixture reaches a solid stage when the crosslinking is turned into a solid phase. His thumb at this time you have fixed it, about 90% of the final when epoxy resin reaction intensity, thus removing the clamp, it continues to put it in room temperature to maintain several angel crosslinking. The newly used epoxy resin cannot be chemically linked with it, since the surface of the epoxy must be properly pretreated to be polished to obtain good adhesion mechanical strength.
The main use of polyisocyanate hybrid polyisocyanate crosslinking agent is paint, foam plastic, coating etc. Of closed water dispersible polyisocyanate crosslinking agent can also agent with assimilated with melamine, melamine crosslinking agent to reduce costs, closed water dispersible polyisocyanate crosslinking agent to improve performance.
Generation of polyisocyanate used in two-component polyurethane coatings and two-component polyurethane coating has become a mainstream technology in the field of many applications, such as car repair paint, large vehicles paint, industrial paint, wood paint, plastic paint, etc.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Uses:
1. Liquid - operation time
Operation time (also working time or use period) is a part of crosslinking time. After mixing, the mixture of resin/crosslinking agent is still liquid and can work and suitable for application. In order to ensure reliable adhesion, all construction and positioning should be done within the time of delivery.
2. Gel - enter crosslinking
The mixture begins to enter the crosslinking phase (also known as the maturation phase) when it begins to gel or "mutate". The epoxy does not have long working hours, and it will lose its viscosity. There is no interference at this stage. It will become a hard rubber-like soft gel that you can press with your thumb. Since the mixture is only locally crosslinked, the newly used epoxy resin can still be linked to it, so the unprocessed surface can still be glued or reactive. In any case, the ability to approach the crosslinking mixture is diminishing.
3. Solid - final crosslinking
The epoxy mixture reaches a solid stage when the crosslinking is turned into a solid phase. His thumb at this time you have fixed it, about 90% of the final when epoxy resin reaction intensity, thus removing the clamp, it continues to put it in room temperature to maintain several angel crosslinking. The newly used epoxy resin cannot be chemically linked with it, since the surface of the epoxy must be properly pretreated to be polished to obtain good adhesion mechanical strength.
The main use of polyisocyanate hybrid polyisocyanate crosslinking agent is paint, foam plastic, coating etc. Of closed water dispersible polyisocyanate crosslinking agent can also agent with assimilated with melamine, melamine crosslinking agent to reduce costs, closed water dispersible polyisocyanate crosslinking agent to improve performance.
Generation of polyisocyanate used in two-component polyurethane coatings and two-component polyurethane coating has become a mainstream technology in the field of many applications, such as car repair paint, large vehicles paint, industrial paint, wood paint, plastic paint, etc.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Uses:
The product is identical to Ethancure 100 and Lonza DETDA 80, DETDA is very effective polyurethane elastomer chain extender; also be used as polyurethane and epoxy resin curing agent, epoxy resin of an antioxidant, industrial oils and lubricants . In addition, also as intermediates in organic synthesis.Especially for the RIM (reaction injection molding), is important in the field of spray polyurea chain extender species. Also can be used for casting polyurethane elastomer (CPU) and a curing agent, epoxy curing agent, epoxy resin of antioxidants, lubricants and industrial oils other antioxidants.
As the society focuses on environmental protection, the high performance crosslinking agent that can reduce the discharge of organic volatiles, such as water dispersible crosslinking agent and low-viscosity crosslinking agent, will be the focus of future development. Hybrid polyisocyanate crosslinking agent is promising for future development based on its wide use.
The development direction of crosslinking agent is multi-functional, high performance, flame retardant, toughening type, latent type, energy saving and environmental protection, especially focusing on energy conservation and environmental protection.
Series of HTAC modified anhydride crosslinking agent, methyl benzene anhydride modification made by the four hydrogen, excellent toughness and heat resistance of crosslinking (24 kj / ㎡, the impact strength of glass transition temperature Tg at 120 ℃). It also developed the successful weathering resistance anhydride interlinking agent, which is modified by the toughening of methyl hexahydrobenzene anhydride and has no double bond in the molecular structure, and has good weatherability.
The new rapid polyether amine crosslinking agent JeffamineXTJ 1 590, crosslinking speed is about 4 times faster than the ordinary polyether amine D. The crosslinking epoxy resin can be used alone or with ordinary polyether amine. It has a high impact strength and thermal shock resistance.
Waterborne epoxy resin crosslinking agent Anquanmine 721 and 731, with excellent performance and environmental friendliness, used for concrete protection performance and performance.
GPM - 830 cb and GPM - 890 cb mercaptan amine epoxy crosslinking agent, can be improved for glass and metal, especially between bronze and brass, stick relay GPM - 830 cb is yellowish-brown liquid, medium viscosity, with bisphenol A type epoxy resin with liquid gel after time for 30 min.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
As the society focuses on environmental protection, the high performance crosslinking agent that can reduce the discharge of organic volatiles, such as water dispersible crosslinking agent and low-viscosity crosslinking agent, will be the focus of future development. Hybrid polyisocyanate crosslinking agent is promising for future development based on its wide use.
The development direction of crosslinking agent is multi-functional, high performance, flame retardant, toughening type, latent type, energy saving and environmental protection, especially focusing on energy conservation and environmental protection.
Series of HTAC modified anhydride crosslinking agent, methyl benzene anhydride modification made by the four hydrogen, excellent toughness and heat resistance of crosslinking (24 kj / ㎡, the impact strength of glass transition temperature Tg at 120 ℃). It also developed the successful weathering resistance anhydride interlinking agent, which is modified by the toughening of methyl hexahydrobenzene anhydride and has no double bond in the molecular structure, and has good weatherability.
The new rapid polyether amine crosslinking agent JeffamineXTJ 1 590, crosslinking speed is about 4 times faster than the ordinary polyether amine D. The crosslinking epoxy resin can be used alone or with ordinary polyether amine. It has a high impact strength and thermal shock resistance.
Waterborne epoxy resin crosslinking agent Anquanmine 721 and 731, with excellent performance and environmental friendliness, used for concrete protection performance and performance.
GPM - 830 cb and GPM - 890 cb mercaptan amine epoxy crosslinking agent, can be improved for glass and metal, especially between bronze and brass, stick relay GPM - 830 cb is yellowish-brown liquid, medium viscosity, with bisphenol A type epoxy resin with liquid gel after time for 30 min.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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