News Details
Liquid epoxy coating crosslinking agent
2017-4-23 18:16:00
Liquid epoxy coating crosslinking agent,Based on epoxy resin, crosslinking agent, fillers and thixotropic agent, developed a thick coating type quick crosslinking for using solvent-free epoxy coating, coating has excellent cathodic disbonding resistance, medium resistance to chemical corrosion, resistance to bending, such as performance, a film thickness is 1000 microns, work time is less than 4 h.
With the development of long-distance pipeline construction in China, 3 PE anticorrosion technology and fusion bonded epoxy powder anticorrosive coating of buried steel pipeline in our country has been widely used in the outer wall corrosion.
After many years of practical application show that the pipeline repairing technology is directly related to the whole pipeline anticorrosion engineering and quality of life, the quality and level of the long-distance pipeline anticorrosive coating is difficult to guarantee, accidents of corrosive perforations occurred in repairing, patching and bending parts. Therefore, the choice of repairing materials technology of pipeline external corrosion protection layer of integrity has a significant impact.
Repairing technology of the original asphalt glass cloth to heat shrinkable sleeve (with), cold wind tape, two-component epoxy coating and other new type of repairing technology and material direction. Liquid epoxy coating is widely used in field, its biggest characteristic of the construction is simple, without heating, forming good, excellent performance, has been used successfully for many years and shows good bonding compatible performance.
At present, used in oil and gas pipeline anticorrosion construction site for most of the epoxy coating with solvent is given priority to, so that the site construction. And no solvent coating because of its high viscosity, on-site construction are being used to join thinner, more characteristics of solvent-free coatings are lost. Add thinner, a film thickness can not meet the requirements, needs to besmear commonly 2 above, and crosslinking is slow, affect the construction period.
Therefore, this study by adding bisphenol F epoxy resin lower the viscosity of the coating, improve the comprehensive performance of the coating, with modified fatty amine and modified alicyclic amine as crosslinking agent, by adding appropriate thixotropic agent to achieve a thick paint film. Research and development can be a film thickness of more than 1000 microns, the coating can be rapid crosslinking, has a solid epoxy powder coating performance liquid solvent-free epoxy coating.
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.
Experiment of materials and equipment:
(1) bisphenol A type epoxy resin, bisphenol F epoxy resin, fillers and thixotropic agent, modified alicyclic amine, modified alicyclic amine;
(2) high-speed dispersion machine
(3) electronic balance, METTLER TOLEDO.
(4) the conical grinding.
Coating and sample preparation: according to draw quantitative bisphenol A type epoxy resin and bisphenol F type, join the thixotropic agent. Then add the temperature distribution of packing high speed to reach 50 plus or minus 10 ℃, keep the temperature continue to spread more than 30 min, add fertilizer spread evenly, using cone mill grinding made part A, will be modified alicyclic amine modified alicyclic amine and crosslinking agent according to certain proportion mixing made from part B.
According to the Chinese oil and gas industry standards SY/T 0315-2005 "steel pipe outside the single fusion bonded epoxy powder coating technology standard" test sample preparation and other related standards.
Film-forming research of epoxy resin. Solventless epoxy coatings have high viscosity, make later construction applications. Therefore, in the formula should be considered in the study of the viscosity of epoxy resin, this paper chooses low viscosity of bisphenol A type epoxy resin E51.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
With the development of long-distance pipeline construction in China, 3 PE anticorrosion technology and fusion bonded epoxy powder anticorrosive coating of buried steel pipeline in our country has been widely used in the outer wall corrosion.
After many years of practical application show that the pipeline repairing technology is directly related to the whole pipeline anticorrosion engineering and quality of life, the quality and level of the long-distance pipeline anticorrosive coating is difficult to guarantee, accidents of corrosive perforations occurred in repairing, patching and bending parts. Therefore, the choice of repairing materials technology of pipeline external corrosion protection layer of integrity has a significant impact.
Repairing technology of the original asphalt glass cloth to heat shrinkable sleeve (with), cold wind tape, two-component epoxy coating and other new type of repairing technology and material direction. Liquid epoxy coating is widely used in field, its biggest characteristic of the construction is simple, without heating, forming good, excellent performance, has been used successfully for many years and shows good bonding compatible performance.
At present, used in oil and gas pipeline anticorrosion construction site for most of the epoxy coating with solvent is given priority to, so that the site construction. And no solvent coating because of its high viscosity, on-site construction are being used to join thinner, more characteristics of solvent-free coatings are lost. Add thinner, a film thickness can not meet the requirements, needs to besmear commonly 2 above, and crosslinking is slow, affect the construction period.
Therefore, this study by adding bisphenol F epoxy resin lower the viscosity of the coating, improve the comprehensive performance of the coating, with modified fatty amine and modified alicyclic amine as crosslinking agent, by adding appropriate thixotropic agent to achieve a thick paint film. Research and development can be a film thickness of more than 1000 microns, the coating can be rapid crosslinking, has a solid epoxy powder coating performance liquid solvent-free epoxy coating.
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.
Experiment of materials and equipment:
(1) bisphenol A type epoxy resin, bisphenol F epoxy resin, fillers and thixotropic agent, modified alicyclic amine, modified alicyclic amine;
(2) high-speed dispersion machine
(3) electronic balance, METTLER TOLEDO.
(4) the conical grinding.
Coating and sample preparation: according to draw quantitative bisphenol A type epoxy resin and bisphenol F type, join the thixotropic agent. Then add the temperature distribution of packing high speed to reach 50 plus or minus 10 ℃, keep the temperature continue to spread more than 30 min, add fertilizer spread evenly, using cone mill grinding made part A, will be modified alicyclic amine modified alicyclic amine and crosslinking agent according to certain proportion mixing made from part B.
According to the Chinese oil and gas industry standards SY/T 0315-2005 "steel pipe outside the single fusion bonded epoxy powder coating technology standard" test sample preparation and other related standards.
Film-forming research of epoxy resin. Solventless epoxy coatings have high viscosity, make later construction applications. Therefore, in the formula should be considered in the study of the viscosity of epoxy resin, this paper chooses low viscosity of bisphenol A type epoxy resin E51.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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