News Details
Flame retardant for epoxy resin
2017-11-4 11:21:57
Flame retardant for epoxy resin
To make epoxy resin and epoxy resin for flame retardant can fully miscible. You need to make the solubility parameters of the two matches. Reaction type epoxy resin flame retardant by phosphorus compounds containing hydroxyl and epoxy ethane reaction, direct L1 resin organic phosphorus group into epoxy resin system, such as DGEBA / DDS resin, chemical modified with two alkyl phosphate ester, obtain reactive prepolymer using crosslinked amine curing agent. Can obtain good flame retardant properties, LOI can reach 32.
The difference of solubility parameter of flame retardant and hydrophobic epoxy resin epoxy resin high solubility parameter is larger, the film performance is not good; and the epoxy resin solubility parameters with small flame retardant, and the solubility parameters of epoxy resin, curing film if can get better performance.
The waterborne epoxy curing agent is mainly used for the modified amine curing agent, which is divided into three categories: A. amide amine, mainly C18 fatty acid and polyamine condensation product; b.C36 two polylactic acid and polyamine condensation product; C. amine adduct, mainly amine and epoxy adduct.
Waterborne epoxy curing agent is mainly used amine aliphatic polyamine, benzene two amine, amine polyoxyethylene two Manniji alkali, etc.. However, the compatibility between the three curing agents and epoxy resin is poor, which leads to short application period and poor water resistance, so the compatibility of epoxy resin and epoxy resin should be improved. The modified method is the most commonly used to reduce the content of primary amine.
This method has dual functions: A. reduces the overall reactivity of the curing agent and prolongs the application period; B. improves its compatibility with epoxy resin. The typical approach is to use the single epoxy compound or terminated acrylonitrile. Although this method reduces the primary amine content, the secondary amine in the framework is still sufficient for curing; the other is the removal of unreacted free amines by reduced pressure distillation.
The reason for the removal of free amines is that when the two components are mixed, the low molecular weight amines are present in the water phase, and these free amines increase the water sensitivity of the coating.
Although the above modification methods improve the compatibility, the water solubility of the curing agent will also decrease. In order to stabilize the dispersion of the curing agent in water, it is necessary to add organic acid to improve its water solubility and keep the emulsion stable. However, the residual organic acids can reduce the water resistance and corrosion resistance of the coating, and the rust is easy to appear on the metal, so the organic acids should be used as little as possible. A small amount of volatile acid after curing, do not affect the coating corrosion resistance.
Waterborne epoxy resin refers to the dispersion of epoxy resin in the form of particles or droplets dispersed in the dispersed medium with water as the continuous phase. Because the epoxy resin is a thermosetting resin linear structure, so before construction must be added into the waterborne epoxy curing agent, chemical curing reaction at room temperature, the cured epoxy resin can change the properties of the original soluble can melt and become insoluble and infusible space network structure, exhibits excellent performance. Waterborne epoxy resin coatings have many merits like solvent type epoxy resin coating:
Tris(2-chloroisopropyl)Phosphate(TCPP)
Cas No:13674 -84-5
HS Code HS: 29199000
The most important indicator of product:
colorless transparent liquid, moisture ≤ 0.1, Acid value ≤ 0.1, Chroma ≤ 50, the phosphorus content: 9.4 ± 0.5
Raw materials: phosphorus oxychloride and epichlorohydrin.
Belong to several categories of dangerous goods:
Currently Tris(2-chloroisopropyl)Phosphate TCPP general cargo exports are not dangerous.
The product is used for the soft / hard polyurethane foam, with thermal and hydrolytic stability good, especially suitable for ASTME84 (Level 11) foam, with low viscosity unsaturated polyester resin in low temperature application and phenolic plastics at. This product is also used to grab the foam sealant and sheet production. For polyvinyl chloride, polystyrene, phenolic resin, acrylic resin and rubber, coating, flame retardant, also used for soft and hard polyurethane foam, epoxy resin, polystyrene, cellulose acetate, ethyl cellulose tree and phenolic plastics, polyvinyl acetate and gun type foam sealant production. Particularly recommended for rigid polyurethane foam has excellent thermal and hydrolytic stability is particularly suitable for ASTM84 (II), compound for polyurethane foam and unsaturated resin and phenolic plastics.
Is a strong ability to adapt to many substrates with high adhesion, coating after curing, corrosion resistance and chemical resistance and excellent coating shrinkage, high hardness, good abrasion resistance, excellent electrical insulation properties;
Two is good environmental protection performance, also has no organic solvents or volatile organic compounds content is low, will not cause air pollution, so as to meet the requirements of the current environmental protection;
Three is the real water, water as a dispersion medium, low price, odorless, non flammable, storage, transportation and use of safety in the process is also greatly improved;
The four operation is good, the construction operation performance of waterborne epoxy resin coatings, construction tools available direct water cleaning, can be cured at room temperature and humid environment, a reasonable curing time, and ensure a high density of curing. This is usually the waterborne acrylic coatings and waterborne polyurethane coatings are incomparable.
Waterborne epoxy resin with its outstanding performance advantages, the waterborne epoxy resin coatings prepared with the same excellent performance, resulting in the water product family is becoming more and more important, experts believe that the waterborne epoxy resin in environmental protection today, the prospects are very broad.
The acrylic monomer (methyl acrylate, ethyl acrylate, butyl acrylate and methyl methacrylate, butyl acrylate as basic components, etc.) into insoluble and infusible acrylic polymer network structure after curing.
In addition to the general properties of acrylic resin, heat resistance, water resistance, solvent resistance, wear resistance and better resistance. There are various forms of body casting material, solution type, emulsion type, water-based.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
To make epoxy resin and epoxy resin for flame retardant can fully miscible. You need to make the solubility parameters of the two matches. Reaction type epoxy resin flame retardant by phosphorus compounds containing hydroxyl and epoxy ethane reaction, direct L1 resin organic phosphorus group into epoxy resin system, such as DGEBA / DDS resin, chemical modified with two alkyl phosphate ester, obtain reactive prepolymer using crosslinked amine curing agent. Can obtain good flame retardant properties, LOI can reach 32.
The difference of solubility parameter of flame retardant and hydrophobic epoxy resin epoxy resin high solubility parameter is larger, the film performance is not good; and the epoxy resin solubility parameters with small flame retardant, and the solubility parameters of epoxy resin, curing film if can get better performance.
The waterborne epoxy curing agent is mainly used for the modified amine curing agent, which is divided into three categories: A. amide amine, mainly C18 fatty acid and polyamine condensation product; b.C36 two polylactic acid and polyamine condensation product; C. amine adduct, mainly amine and epoxy adduct.
Waterborne epoxy curing agent is mainly used amine aliphatic polyamine, benzene two amine, amine polyoxyethylene two Manniji alkali, etc.. However, the compatibility between the three curing agents and epoxy resin is poor, which leads to short application period and poor water resistance, so the compatibility of epoxy resin and epoxy resin should be improved. The modified method is the most commonly used to reduce the content of primary amine.
This method has dual functions: A. reduces the overall reactivity of the curing agent and prolongs the application period; B. improves its compatibility with epoxy resin. The typical approach is to use the single epoxy compound or terminated acrylonitrile. Although this method reduces the primary amine content, the secondary amine in the framework is still sufficient for curing; the other is the removal of unreacted free amines by reduced pressure distillation.
The reason for the removal of free amines is that when the two components are mixed, the low molecular weight amines are present in the water phase, and these free amines increase the water sensitivity of the coating.
Although the above modification methods improve the compatibility, the water solubility of the curing agent will also decrease. In order to stabilize the dispersion of the curing agent in water, it is necessary to add organic acid to improve its water solubility and keep the emulsion stable. However, the residual organic acids can reduce the water resistance and corrosion resistance of the coating, and the rust is easy to appear on the metal, so the organic acids should be used as little as possible. A small amount of volatile acid after curing, do not affect the coating corrosion resistance.
Waterborne epoxy resin refers to the dispersion of epoxy resin in the form of particles or droplets dispersed in the dispersed medium with water as the continuous phase. Because the epoxy resin is a thermosetting resin linear structure, so before construction must be added into the waterborne epoxy curing agent, chemical curing reaction at room temperature, the cured epoxy resin can change the properties of the original soluble can melt and become insoluble and infusible space network structure, exhibits excellent performance. Waterborne epoxy resin coatings have many merits like solvent type epoxy resin coating:
Tris(2-chloroisopropyl)Phosphate(TCPP)
Cas No:13674 -84-5
HS Code HS: 29199000
The most important indicator of product:
colorless transparent liquid, moisture ≤ 0.1, Acid value ≤ 0.1, Chroma ≤ 50, the phosphorus content: 9.4 ± 0.5
Raw materials: phosphorus oxychloride and epichlorohydrin.
Belong to several categories of dangerous goods:
Currently Tris(2-chloroisopropyl)Phosphate TCPP general cargo exports are not dangerous.
The product is used for the soft / hard polyurethane foam, with thermal and hydrolytic stability good, especially suitable for ASTME84 (Level 11) foam, with low viscosity unsaturated polyester resin in low temperature application and phenolic plastics at. This product is also used to grab the foam sealant and sheet production. For polyvinyl chloride, polystyrene, phenolic resin, acrylic resin and rubber, coating, flame retardant, also used for soft and hard polyurethane foam, epoxy resin, polystyrene, cellulose acetate, ethyl cellulose tree and phenolic plastics, polyvinyl acetate and gun type foam sealant production. Particularly recommended for rigid polyurethane foam has excellent thermal and hydrolytic stability is particularly suitable for ASTM84 (II), compound for polyurethane foam and unsaturated resin and phenolic plastics.
Is a strong ability to adapt to many substrates with high adhesion, coating after curing, corrosion resistance and chemical resistance and excellent coating shrinkage, high hardness, good abrasion resistance, excellent electrical insulation properties;
Two is good environmental protection performance, also has no organic solvents or volatile organic compounds content is low, will not cause air pollution, so as to meet the requirements of the current environmental protection;
Three is the real water, water as a dispersion medium, low price, odorless, non flammable, storage, transportation and use of safety in the process is also greatly improved;
The four operation is good, the construction operation performance of waterborne epoxy resin coatings, construction tools available direct water cleaning, can be cured at room temperature and humid environment, a reasonable curing time, and ensure a high density of curing. This is usually the waterborne acrylic coatings and waterborne polyurethane coatings are incomparable.
Waterborne epoxy resin with its outstanding performance advantages, the waterborne epoxy resin coatings prepared with the same excellent performance, resulting in the water product family is becoming more and more important, experts believe that the waterborne epoxy resin in environmental protection today, the prospects are very broad.
The acrylic monomer (methyl acrylate, ethyl acrylate, butyl acrylate and methyl methacrylate, butyl acrylate as basic components, etc.) into insoluble and infusible acrylic polymer network structure after curing.
In addition to the general properties of acrylic resin, heat resistance, water resistance, solvent resistance, wear resistance and better resistance. There are various forms of body casting material, solution type, emulsion type, water-based.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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