News Details
Elastic polyurethane coating crosslinking agent
2017-8-3 16:16:51
Elastic polyurethane coating crosslinking agent
A kind of elastic polyurethane coating crosslinking agent was prepared, and the influence of the amount of polyol, the variety and dosage of fluorine resin and the amount of the paint material was discussed.
In this paper, the preparation of the elasticity of polyurethane crosslinker and traditional HDI trimer and commercially available elastic polyurethane crosslinker crosslinked coating than in weather resistance, abrasion resistance, mechanical properties, hydrolysis stability and the composite material has obvious advantages in substrate adhesion, etc. The requirement of coating for wind turbine blades and the feasibility of EPU crosslinking agent for wind turbine blade protection coating are analyzed.
Germany since 1937 for the first time with Dr OttoBayer synthesize isocyanates of practical industrial polyurethane polymer, polyurethane resin with excellent chemical properties and physical and mechanical properties has been widely used, its production has become second only to the alkyd coating and coating of phenolic after the third largest coating product.
Among them, the elastic polyurethane coating is a special category, it is a great variety of raw materials, chemical and physical mechanical properties of the adjustable range is very large, the most outstanding characteristic is similar rubber of high elasticity, high strength, high wear resistance, high and high impact performance.
With the development of polymer science and synthesis technology, the study of polyurethane resin has reached the level of molecular design, can according to the need for structural design, on reservation of polyurethane resin is excellent performance at the same time, the introduction of other functional groups and given a variety of different performance, in order to satisfy different use.
Fluorine resin with excellent comprehensive performance, especially the emergence of containing hydroxyl, soluble fluorine resin, fluorine resin on the application of the space, the modification of polyurethane resin with fluorine resin, can the advantages of both two kinds of resin, make up for the shortcomings of each other, so as to improve product quality, the purpose of broadening the scope of polyurethane resin used.
Based on weatherability aliphatic polyester and hydroxyl fluoride resin as the main raw material, and isophorone diisocyanate (IPDI) reaction, created a high weather resistance wear elastic polyurethane crosslinker (EPU crosslinking agent), with high weatherability acrylic, polyester, organic silicon hydroxyl component, the coating product performance is prepared.
Test raw materials. Polyester: self-restraint; Fluorine resin: RF - 101; Trimethyl-propane (TMP) : industrial products; Isopolone diisocyanate (IPDI) : more than 99.8%, industrial products; Inhibitor: self - control.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
A kind of elastic polyurethane coating crosslinking agent was prepared, and the influence of the amount of polyol, the variety and dosage of fluorine resin and the amount of the paint material was discussed.
In this paper, the preparation of the elasticity of polyurethane crosslinker and traditional HDI trimer and commercially available elastic polyurethane crosslinker crosslinked coating than in weather resistance, abrasion resistance, mechanical properties, hydrolysis stability and the composite material has obvious advantages in substrate adhesion, etc. The requirement of coating for wind turbine blades and the feasibility of EPU crosslinking agent for wind turbine blade protection coating are analyzed.
Germany since 1937 for the first time with Dr OttoBayer synthesize isocyanates of practical industrial polyurethane polymer, polyurethane resin with excellent chemical properties and physical and mechanical properties has been widely used, its production has become second only to the alkyd coating and coating of phenolic after the third largest coating product.
Among them, the elastic polyurethane coating is a special category, it is a great variety of raw materials, chemical and physical mechanical properties of the adjustable range is very large, the most outstanding characteristic is similar rubber of high elasticity, high strength, high wear resistance, high and high impact performance.
With the development of polymer science and synthesis technology, the study of polyurethane resin has reached the level of molecular design, can according to the need for structural design, on reservation of polyurethane resin is excellent performance at the same time, the introduction of other functional groups and given a variety of different performance, in order to satisfy different use.
Fluorine resin with excellent comprehensive performance, especially the emergence of containing hydroxyl, soluble fluorine resin, fluorine resin on the application of the space, the modification of polyurethane resin with fluorine resin, can the advantages of both two kinds of resin, make up for the shortcomings of each other, so as to improve product quality, the purpose of broadening the scope of polyurethane resin used.
Based on weatherability aliphatic polyester and hydroxyl fluoride resin as the main raw material, and isophorone diisocyanate (IPDI) reaction, created a high weather resistance wear elastic polyurethane crosslinker (EPU crosslinking agent), with high weatherability acrylic, polyester, organic silicon hydroxyl component, the coating product performance is prepared.
Test raw materials. Polyester: self-restraint; Fluorine resin: RF - 101; Trimethyl-propane (TMP) : industrial products; Isopolone diisocyanate (IPDI) : more than 99.8%, industrial products; Inhibitor: self - control.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
A reagent grade additives
Hydroxyl resin: PE - 6, homemade, non-volatile 70%, hydroxyl value = 120mgKOH/g; Titanium white powder: R902; Drying agent: xanthian, AR; Other auxiliaries such as dispersants; Propylene glycol methyl ether acetate (PMA) : industrial products; Butyl acetate: industrial products.
Preparation of EPU crosslinking agent. Will measure of aliphatic polyester, TMP, the RF - 101 and PMA, butyl acetate with thermometer, mixer, the reaction of the reflux condenser device, start stirring, to return, return cooled to below 70 ℃ after dehydration, stir in IPDI, keep stirring 0.5 ℃, the temperature to 90 ℃ heat response to NCO reached the theoretical value, to join the polymerization retarder, stirring after 0.5 ℃, cooling below 60 ℃, filter out the material.
Preparation of paints. According to the formula, add the facial filler, auxiliary agent and mixed solvents in PE - 6 resin, grind to fine quality, add other auxiliaries, adjust the non-volatile component, and filter the packaging.
According to n (-nco) : n (-oh) = 1.2:1 with paint, the coating is prepared by spraying, without special instructions, the coating will be tested after 24h at room temperature.
Test methods and equipment. Color appearance: visual inspection; Drying time: according to the method of GB/t1728-79 (89); Adhesion: according to the method of GB/t52210-2006; Peel strength: according to GB/T2792-1998; Heat resistance: according to GB/t1735-79 (89).
Low temperature resistance: according to qj990.5-86; Blowing sand test: according to the method of gjb150.12-86; Breaking elongation and tensile strength: according to the method of GB/T528-1998, the dry film thickness 1.0 + 0.1mm was cut into the dumbbell shape test, and the speed was 500mm/min on the XL -500 tensile test machine.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Hydroxyl resin: PE - 6, homemade, non-volatile 70%, hydroxyl value = 120mgKOH/g; Titanium white powder: R902; Drying agent: xanthian, AR; Other auxiliaries such as dispersants; Propylene glycol methyl ether acetate (PMA) : industrial products; Butyl acetate: industrial products.
Preparation of EPU crosslinking agent. Will measure of aliphatic polyester, TMP, the RF - 101 and PMA, butyl acetate with thermometer, mixer, the reaction of the reflux condenser device, start stirring, to return, return cooled to below 70 ℃ after dehydration, stir in IPDI, keep stirring 0.5 ℃, the temperature to 90 ℃ heat response to NCO reached the theoretical value, to join the polymerization retarder, stirring after 0.5 ℃, cooling below 60 ℃, filter out the material.
Preparation of paints. According to the formula, add the facial filler, auxiliary agent and mixed solvents in PE - 6 resin, grind to fine quality, add other auxiliaries, adjust the non-volatile component, and filter the packaging.
According to n (-nco) : n (-oh) = 1.2:1 with paint, the coating is prepared by spraying, without special instructions, the coating will be tested after 24h at room temperature.
Test methods and equipment. Color appearance: visual inspection; Drying time: according to the method of GB/t1728-79 (89); Adhesion: according to the method of GB/t52210-2006; Peel strength: according to GB/T2792-1998; Heat resistance: according to GB/t1735-79 (89).
Low temperature resistance: according to qj990.5-86; Blowing sand test: according to the method of gjb150.12-86; Breaking elongation and tensile strength: according to the method of GB/T528-1998, the dry film thickness 1.0 + 0.1mm was cut into the dumbbell shape test, and the speed was 500mm/min on the XL -500 tensile test machine.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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