News Details
Flame retardants for polyurethane powder coatings
2017-11-4 11:22:06
Flame retardants for polyurethane powder coatings
The weather resistance powder coatings, polyurethane powder coatings production after polyester powder coatings in the world. Due to its excellent physical and chemical properties, and the decoration is very good, the performance of a comprehensive, balanced, application of the wide range of special decorative coating, mainly used in outdoor occasions, such as bicycles, motorcycles, cars etc..
The new polyurethane powder coatings recently developed for flame retardant polyurethane in the application of test results showed that the polyurethane powder coatings with flame retardant is a kind of high thermal stability, good flame retardant effect, also has a new flame retardant plasticizer and antioxidant properties.
In addition, easy to thin makes it particularly suitable for pre coated metal material (PCM) coating. Now on the market of polyurethane powder coatings are composed of hydroxyl polyester and blocking isocyanate. The physical and chemical properties of powder coatings composed of different polyurethane powder coatings and resin curing agents are very different.
Find suitable polyurethane powder coatings through the test data with the optimum formula of flame retardant, in order to achieve the best price of polyurethane powder coatings with flame retardant components and test conditions on the properties of coating film.
The main chemical reaction of polyurethane powder coating is the reaction between hydroxyl (- OH) of polyester resin and blocked isocyanate (- NCO).
The degradation rate of coating of polyurethane powder paint mainly depends on hydroxyl polyester backbone decomposition control plays a very important role in the selection of hydroxyl polyester polyurethane powder coating chemical resistance, then choose the number of hydroxyl polyester were compared in various physical and chemical properties, but the physical and chemical properties of polyurethane powder coatings of different manufacturers of polyester polyol made is very different.
The raw materials in strict accordance with the reference formulation weighed and mixed evenly, with SLJ-30 extruder (an area at 105 deg.c, two zone temperature controlled at 110 DEG C), oven temperature is (200 + 2) C standard testing model, testing standards in accordance with the national standard, the detection of polyurethane coating film performance in different saturated hydroxy polyester.
Has a great influence on the physical and chemical properties of the curing agent of polyurethane powder coatings, if the choice of curing agent and resin can not produce good curing reaction, then the physical and chemical properties of polyurethane powder coatings will be affected to a great extent.
The test can select the best resin and curing agent, but the test results can be seen, the film aging properties are not optimal, in order to improve the coating's aging properties, select the appropriate additives become the key to make the optimal formula.
The catalyst for polyurethane powder coating was selected. It is a kind of free flowing two lauric acid two butyl tin catalyst. The influence of its addition amount on the aging resistance and impact resistance of the coating film is studied.
Tris(2-chloroisopropyl)Phosphate(TCPP)
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.
Due to the transport process to avoid collision damage, Tris2-chloropropyl phosphate TCPP packaging methods generally used 250KG galvanized iron drum.
Below to introduce some of Tris2-chloropropyl phosphate TCPP packaging:
Net weight 250KG/ galvanized iron drum (a small cabinet pallet loaded 20 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).
Company 1.5 hour drive from Shanghai, the general sent to Shanghai port, the goods from customs inspection to the fastest one week after, the slowest ten days.
In view of the domestic and foreign demand is relatively small clients, also can use 50KG plastic bucket.
If you have special requirements on the Tris2-chloropropyl phosphate TCPP packaging, please contact us, try to meet the packaging requirements of customers.
With the increase of BT-71, the coating of polyurethane powder coatings in rigidity increase, the impact resistance will be reduced, while the film gloss will have different degrees of decline, through the test to the addition amount of 3 per thousand to 3.5 per thousand, the film in the light rate of 20% when the aging resistance of more than 800H at the same time, the positive and negative impact of 50kg does not have small cracks.
From the above test can be drawn polyurethane powder coating optimization formulation is BT-71 adding 3 ~ 3.5 per thousand per thousand.
In the process of extrusion test, extrusion machine cleaning is very important, the best extrusion machine and grinding machine specialized production of polyurethane powder coatings, if there are other paint residue extrusion machine and grinding machine, will produce polyurethane powder coating particles, shrinkage and other defects.
Because of polyurethane powder coating in curing film-forming process to release sealant small molecular compound film cannot test sample is too thick, otherwise easily lead to pinhole, bubbles and other ills; at the same time because of blocked isocyanate release temperature is high, decided not to do low temperature curing polyurethane powder coatings. The temperature of the oven is too high or the baking time is too long, it will cause the yellowing of the coating, and then affect the gloss of the coating.
The polyurethane material is the best performance of the thermal insulation material. A class of polymers containing NHCOO repeat unit chain. English abbreviation PU. The isocyanate (monomer) and hydroxyl compounds polymerized. Because of the strong polarity of urethane group, insoluble in non-polar group, it has good oil resistance, toughness, wear resistance, aging resistance and adhesion. Materials suitable for a wide range of temperature (- 50~150) can be prepared from different raw materials, including elastomers, thermoplastic resins and thermosetting resins. High temperature resistant to hydrolysis, is not high in alkaline medium.
Monomers such as toluene diisocyanate, two diphenyl methane diisocyanate and other commonly used. Polyols can be divided into 3 categories: simple Polyols (ethylene glycol, glycerol etc.); polyester oligomer containing terminal hydroxyl groups, used in the preparation of polyester polyurethane; containing terminal hydroxyl polyether oligomer, used for the preparation of polyether polyurethane. Polymerization methods vary with material properties.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
The weather resistance powder coatings, polyurethane powder coatings production after polyester powder coatings in the world. Due to its excellent physical and chemical properties, and the decoration is very good, the performance of a comprehensive, balanced, application of the wide range of special decorative coating, mainly used in outdoor occasions, such as bicycles, motorcycles, cars etc..
The new polyurethane powder coatings recently developed for flame retardant polyurethane in the application of test results showed that the polyurethane powder coatings with flame retardant is a kind of high thermal stability, good flame retardant effect, also has a new flame retardant plasticizer and antioxidant properties.
In addition, easy to thin makes it particularly suitable for pre coated metal material (PCM) coating. Now on the market of polyurethane powder coatings are composed of hydroxyl polyester and blocking isocyanate. The physical and chemical properties of powder coatings composed of different polyurethane powder coatings and resin curing agents are very different.
Find suitable polyurethane powder coatings through the test data with the optimum formula of flame retardant, in order to achieve the best price of polyurethane powder coatings with flame retardant components and test conditions on the properties of coating film.
The main chemical reaction of polyurethane powder coating is the reaction between hydroxyl (- OH) of polyester resin and blocked isocyanate (- NCO).
The degradation rate of coating of polyurethane powder paint mainly depends on hydroxyl polyester backbone decomposition control plays a very important role in the selection of hydroxyl polyester polyurethane powder coating chemical resistance, then choose the number of hydroxyl polyester were compared in various physical and chemical properties, but the physical and chemical properties of polyurethane powder coatings of different manufacturers of polyester polyol made is very different.
The raw materials in strict accordance with the reference formulation weighed and mixed evenly, with SLJ-30 extruder (an area at 105 deg.c, two zone temperature controlled at 110 DEG C), oven temperature is (200 + 2) C standard testing model, testing standards in accordance with the national standard, the detection of polyurethane coating film performance in different saturated hydroxy polyester.
Has a great influence on the physical and chemical properties of the curing agent of polyurethane powder coatings, if the choice of curing agent and resin can not produce good curing reaction, then the physical and chemical properties of polyurethane powder coatings will be affected to a great extent.
The test can select the best resin and curing agent, but the test results can be seen, the film aging properties are not optimal, in order to improve the coating's aging properties, select the appropriate additives become the key to make the optimal formula.
The catalyst for polyurethane powder coating was selected. It is a kind of free flowing two lauric acid two butyl tin catalyst. The influence of its addition amount on the aging resistance and impact resistance of the coating film is studied.
Tris(2-chloroisopropyl)Phosphate(TCPP)
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.
Due to the transport process to avoid collision damage, Tris2-chloropropyl phosphate TCPP packaging methods generally used 250KG galvanized iron drum.
Below to introduce some of Tris2-chloropropyl phosphate TCPP packaging:
Net weight 250KG/ galvanized iron drum (a small cabinet pallet loaded 20 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).
Company 1.5 hour drive from Shanghai, the general sent to Shanghai port, the goods from customs inspection to the fastest one week after, the slowest ten days.
In view of the domestic and foreign demand is relatively small clients, also can use 50KG plastic bucket.
If you have special requirements on the Tris2-chloropropyl phosphate TCPP packaging, please contact us, try to meet the packaging requirements of customers.
With the increase of BT-71, the coating of polyurethane powder coatings in rigidity increase, the impact resistance will be reduced, while the film gloss will have different degrees of decline, through the test to the addition amount of 3 per thousand to 3.5 per thousand, the film in the light rate of 20% when the aging resistance of more than 800H at the same time, the positive and negative impact of 50kg does not have small cracks.
From the above test can be drawn polyurethane powder coating optimization formulation is BT-71 adding 3 ~ 3.5 per thousand per thousand.
In the process of extrusion test, extrusion machine cleaning is very important, the best extrusion machine and grinding machine specialized production of polyurethane powder coatings, if there are other paint residue extrusion machine and grinding machine, will produce polyurethane powder coating particles, shrinkage and other defects.
Because of polyurethane powder coating in curing film-forming process to release sealant small molecular compound film cannot test sample is too thick, otherwise easily lead to pinhole, bubbles and other ills; at the same time because of blocked isocyanate release temperature is high, decided not to do low temperature curing polyurethane powder coatings. The temperature of the oven is too high or the baking time is too long, it will cause the yellowing of the coating, and then affect the gloss of the coating.
The polyurethane material is the best performance of the thermal insulation material. A class of polymers containing NHCOO repeat unit chain. English abbreviation PU. The isocyanate (monomer) and hydroxyl compounds polymerized. Because of the strong polarity of urethane group, insoluble in non-polar group, it has good oil resistance, toughness, wear resistance, aging resistance and adhesion. Materials suitable for a wide range of temperature (- 50~150) can be prepared from different raw materials, including elastomers, thermoplastic resins and thermosetting resins. High temperature resistant to hydrolysis, is not high in alkaline medium.
Monomers such as toluene diisocyanate, two diphenyl methane diisocyanate and other commonly used. Polyols can be divided into 3 categories: simple Polyols (ethylene glycol, glycerol etc.); polyester oligomer containing terminal hydroxyl groups, used in the preparation of polyester polyurethane; containing terminal hydroxyl polyether oligomer, used for the preparation of polyether polyurethane. Polymerization methods vary with material properties.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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