News Details
Crosslinking speed of coating crosslinking agent
2017-7-8 16:03:56
Crosslinking speed of coating crosslinking agent
The operation time of epoxy reaction and the time of crosslinking have great influence on construction and repair work. Operation time governs mixing, application, modification, molding, assembly and tightening time. Crosslinking time command how much time you have to wait to remove the fastening fixture, or when it can be polished, or the next step to the object. Two factors determine the operation time of the epoxy mixture and the crosslinking time - crosslinking speed and epoxy temperature.
Crosslinking speed: the ideal cross-linking temperature range for each crosslinking agent. At any given temperature, the mixture of each resin/crosslinking agent is in a different range and will pass through some cross-linking phases.
Choose crosslinking agent for the operating time required for your work temperature and working conditions. The product description and container label indicate the time of operation of crosslinking agent and the time of crosslinking.
The use period is an index to compare the crosslinking rate of different crosslinking agents. It is a mixture of certain resin/crosslinking agents, total time of liquid at a specific temperature. (100g mixture, at standard state, 72F) so the lifetime is the cross-linking rate measured in a specific mass (volume) state. The operation time of a crosslinking agent is much shorter than the period of use.
The temperature of the epoxy. The heat temperature of crosslinked epoxy is related to the speed of the nationalization, and the temperature of the epoxy crosslinking depends on the temperature of the environment and the heat released by the crosslinking.
Ambient temperature is the temperature of the air or substance exposed to epoxy. The most common temperature in the environment is the air temperature, which is also the temperature applied to the surface of the epoxy. When these temperatures are high, the epoxy is fast.
Chinese name: Diethyl toluene diamine(DETDA)
The operation time of epoxy reaction and the time of crosslinking have great influence on construction and repair work. Operation time governs mixing, application, modification, molding, assembly and tightening time. Crosslinking time command how much time you have to wait to remove the fastening fixture, or when it can be polished, or the next step to the object. Two factors determine the operation time of the epoxy mixture and the crosslinking time - crosslinking speed and epoxy temperature.
Crosslinking speed: the ideal cross-linking temperature range for each crosslinking agent. At any given temperature, the mixture of each resin/crosslinking agent is in a different range and will pass through some cross-linking phases.
Choose crosslinking agent for the operating time required for your work temperature and working conditions. The product description and container label indicate the time of operation of crosslinking agent and the time of crosslinking.
The use period is an index to compare the crosslinking rate of different crosslinking agents. It is a mixture of certain resin/crosslinking agents, total time of liquid at a specific temperature. (100g mixture, at standard state, 72F) so the lifetime is the cross-linking rate measured in a specific mass (volume) state. The operation time of a crosslinking agent is much shorter than the period of use.
The temperature of the epoxy. The heat temperature of crosslinked epoxy is related to the speed of the nationalization, and the temperature of the epoxy crosslinking depends on the temperature of the environment and the heat released by the crosslinking.
Ambient temperature is the temperature of the air or substance exposed to epoxy. The most common temperature in the environment is the air temperature, which is also the temperature applied to the surface of the epoxy. When these temperatures are high, the epoxy is fast.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine packingļ¼ 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).
Exothermic is due to the epoxy-crosslinking reaction. The size of this heat depends on the mixture of epoxy or exposed surface area. When the concentration is large, it produces more heat, because the reaction speed is large and the heat is generated quickly. In this exothermic reaction, the shape of the mixture and the quality of the mixture have a great impact. In a plastic cup, the epoxy (8 ounces or more) is linked, and when the mixture is stirred the heat will melt the cup and burn your skin. In any case, if some mass is spread on a thin layer, the heat will quickly disappear. Epoxial crosslinking time is determined by ambient temperature. The thickness of the crosslinked epoxy has a certain effect on heat release.
Control crosslinking time. In the heating state. If possible use a slow crosslinking agent. When using the fast crosslinking agent, the mixture will be smaller or pour the mixture into a large surface area container to allow the heat to dissipate and extend the operating time. Mixing the mixture as soon as possible will facilitate the extension of the use period.
In cold crosslinking state. Use a quick crosslinking agent or use a supplementary heating to make the epoxy temperature greater than the recommended temperature range of the crosslinking agent. Heat air gun, heating lamp or other heating source can be used to heat the resin/crosslinking agent when mixed or used. This will speed up the crosslinking speed.
The mixture of epoxy resin and crosslinking agent is a chemical reaction that converts liquid compounds into solids. The time required for this transformation is crosslinking time.
The effect of crosslinking agent and epoxy resin on shear strength. According to the molecular structure of an amine crosslinking agent, the active hydrogen equivalent can be calculated to calculate the ratio of the mixture to the epoxy resin. However, in the actual formulation, the composition of the crosslinking agent and the components of the epoxy resin will be filled with a large amount of fillings, additives and other substances, and the relative amount of the two components should be based on the experimental data.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Exothermic is due to the epoxy-crosslinking reaction. The size of this heat depends on the mixture of epoxy or exposed surface area. When the concentration is large, it produces more heat, because the reaction speed is large and the heat is generated quickly. In this exothermic reaction, the shape of the mixture and the quality of the mixture have a great impact. In a plastic cup, the epoxy (8 ounces or more) is linked, and when the mixture is stirred the heat will melt the cup and burn your skin. In any case, if some mass is spread on a thin layer, the heat will quickly disappear. Epoxial crosslinking time is determined by ambient temperature. The thickness of the crosslinked epoxy has a certain effect on heat release.
Control crosslinking time. In the heating state. If possible use a slow crosslinking agent. When using the fast crosslinking agent, the mixture will be smaller or pour the mixture into a large surface area container to allow the heat to dissipate and extend the operating time. Mixing the mixture as soon as possible will facilitate the extension of the use period.
In cold crosslinking state. Use a quick crosslinking agent or use a supplementary heating to make the epoxy temperature greater than the recommended temperature range of the crosslinking agent. Heat air gun, heating lamp or other heating source can be used to heat the resin/crosslinking agent when mixed or used. This will speed up the crosslinking speed.
The mixture of epoxy resin and crosslinking agent is a chemical reaction that converts liquid compounds into solids. The time required for this transformation is crosslinking time.
The effect of crosslinking agent and epoxy resin on shear strength. According to the molecular structure of an amine crosslinking agent, the active hydrogen equivalent can be calculated to calculate the ratio of the mixture to the epoxy resin. However, in the actual formulation, the composition of the crosslinking agent and the components of the epoxy resin will be filled with a large amount of fillings, additives and other substances, and the relative amount of the two components should be based on the experimental data.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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