News Details
Acrylic paint crosslinking agent
2017-5-27 18:08:49
Acrylic paint crosslinking agent
Elastic acrylic emulsion is to point to add the right amount of soft monomer to reduce glass transition temperature, using functional monomer with special functional group interaction with slightly crosslinked structure type of acrylic emulsion.
The elastic emulsion with ordinary acrylic emulsion's biggest difference is that the former has a low glass transition temperature (Tg), can at low temperature to keep good resilience, tenacity and elongation at break, and the applicable temperature range.
According to different needs, the researchers by core-shell emulsion polymerization, the different types of crosslinking monomer on elastic emulsion was studied, using inorganic nano SiO2, organic silicon, organic fluorine, fluorine and silicon on the study of modified acrylic emulsion have been reported. The orthogonal design method has the characteristics of the factors and the uniformity and uniformity, and can achieve the test expectation and improve the performance of the product. This method was not used in the literature to study the report on the emulsion of elastic acrylic acid.
This experiment USES the orthogonal experiment method, designed the lower Tg, a multiple system of copolymerization, the initiator, emulsifier, self-crosslinkable monomer and polymerization temperature on the properties of elastic emulsion, developed the excellent comprehensive performance of elastic emulsion formula, and the optimum formula obtained emulsion waterproof coating was prepared, and compared with commercially available emulsion preparation of waterproof coating were compared.
Experimental raw materials: styrene and acrylate, CP, ammonium persulfate, AR, sodium lauryl sulfate (SDS), CP; Methyl methacrylate, CP; Acrylic, CP; N-hydroxymethyl acrylamide (NMA), AR; OP - 10, AR; Sodium bicarbonate, AR; Distilled water, homemade.
In this paper, the influence of various factors on the preparation of emulsion and its performance was studied by using orthogonal test method.
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.
Early emulsion: quality (the same below) than in the beaker for 6.2/56.8/1.4/11.6 mixed monomer St/BA/AA/MMA and a certain amount of NMA, and 40% of H2O (30.4 g), 60% compound emulsifier (SDS/OP - 10, 1/2) add to the beaker, normal temperature mixing 40 min, obtain the emulsion.
Seed emulsion polymerization in a blender, thermometer, condensation reflux and nitrogen into four, respectively, to join the rest of the 40% of H2O in flask, 20% of the APS, the rest of the compound emulsifier, NaHCO3 (0.2 g) and 5% of the emulsion, emulsion polymerization, under the certain reaction temperature and stir speed of 250 r/min, 30 min insulation, seed emulsion.
Emulsion polymerization, under the given temperature, add the rest of the uniform pre emulsion drops to seed emulsion, about 3 h drops out, add start even after 1 h drops in APS solution, 2 h drip off. Drops after heating to the curing reaction for 2 h under 90 ℃, then cooled to 50 ℃ under with ammonia to adjust pH value of 7 ~ 8, filter out the material.
Preparation of waterproof coating. Combine the powder mixture evenly; Add the liquid to the reaction kettle and stir 1 ~ 2 min under 300 ~ 400 r/min. Add the mix of powder to the reaction kettle and turn the speed up to 600 ~ 800 r/min. Stop stirring, apply the coating to the glass plate, and scrape with a blade, drying at room temperature.
The performance tests. Solid content and condensation rate: weight method determination; Conversion rate: the ratio of measured solid content to theoretical solid content; Viscosity: rotating viscometer is used to test, 63, rotor, speed 50 r/min, the test temperature 25 ℃; Particle size and its distribution: the laser scattering particle size distribution instrument is used to measure the size of Z and PDI. Calcium ion stability.
Using 5% of the calcium chloride solution; Crosslinking degree: after extraction, use the weighing method. Water absorption rate: soak in water after film and weigh the method. Breaking strength and elongation at break: will prepare good waterproof coatings according to standard film, after drying, use cutting knife cutting into a dumbbell, according to the type JS Ⅰ gb, using universal testing machine.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Elastic acrylic emulsion is to point to add the right amount of soft monomer to reduce glass transition temperature, using functional monomer with special functional group interaction with slightly crosslinked structure type of acrylic emulsion.
The elastic emulsion with ordinary acrylic emulsion's biggest difference is that the former has a low glass transition temperature (Tg), can at low temperature to keep good resilience, tenacity and elongation at break, and the applicable temperature range.
According to different needs, the researchers by core-shell emulsion polymerization, the different types of crosslinking monomer on elastic emulsion was studied, using inorganic nano SiO2, organic silicon, organic fluorine, fluorine and silicon on the study of modified acrylic emulsion have been reported. The orthogonal design method has the characteristics of the factors and the uniformity and uniformity, and can achieve the test expectation and improve the performance of the product. This method was not used in the literature to study the report on the emulsion of elastic acrylic acid.
This experiment USES the orthogonal experiment method, designed the lower Tg, a multiple system of copolymerization, the initiator, emulsifier, self-crosslinkable monomer and polymerization temperature on the properties of elastic emulsion, developed the excellent comprehensive performance of elastic emulsion formula, and the optimum formula obtained emulsion waterproof coating was prepared, and compared with commercially available emulsion preparation of waterproof coating were compared.
Experimental raw materials: styrene and acrylate, CP, ammonium persulfate, AR, sodium lauryl sulfate (SDS), CP; Methyl methacrylate, CP; Acrylic, CP; N-hydroxymethyl acrylamide (NMA), AR; OP - 10, AR; Sodium bicarbonate, AR; Distilled water, homemade.
In this paper, the influence of various factors on the preparation of emulsion and its performance was studied by using orthogonal test method.
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.
Early emulsion: quality (the same below) than in the beaker for 6.2/56.8/1.4/11.6 mixed monomer St/BA/AA/MMA and a certain amount of NMA, and 40% of H2O (30.4 g), 60% compound emulsifier (SDS/OP - 10, 1/2) add to the beaker, normal temperature mixing 40 min, obtain the emulsion.
Seed emulsion polymerization in a blender, thermometer, condensation reflux and nitrogen into four, respectively, to join the rest of the 40% of H2O in flask, 20% of the APS, the rest of the compound emulsifier, NaHCO3 (0.2 g) and 5% of the emulsion, emulsion polymerization, under the certain reaction temperature and stir speed of 250 r/min, 30 min insulation, seed emulsion.
Emulsion polymerization, under the given temperature, add the rest of the uniform pre emulsion drops to seed emulsion, about 3 h drops out, add start even after 1 h drops in APS solution, 2 h drip off. Drops after heating to the curing reaction for 2 h under 90 ℃, then cooled to 50 ℃ under with ammonia to adjust pH value of 7 ~ 8, filter out the material.
Preparation of waterproof coating. Combine the powder mixture evenly; Add the liquid to the reaction kettle and stir 1 ~ 2 min under 300 ~ 400 r/min. Add the mix of powder to the reaction kettle and turn the speed up to 600 ~ 800 r/min. Stop stirring, apply the coating to the glass plate, and scrape with a blade, drying at room temperature.
The performance tests. Solid content and condensation rate: weight method determination; Conversion rate: the ratio of measured solid content to theoretical solid content; Viscosity: rotating viscometer is used to test, 63, rotor, speed 50 r/min, the test temperature 25 ℃; Particle size and its distribution: the laser scattering particle size distribution instrument is used to measure the size of Z and PDI. Calcium ion stability.
Using 5% of the calcium chloride solution; Crosslinking degree: after extraction, use the weighing method. Water absorption rate: soak in water after film and weigh the method. Breaking strength and elongation at break: will prepare good waterproof coatings according to standard film, after drying, use cutting knife cutting into a dumbbell, according to the type JS Ⅰ gb, using universal testing machine.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Spanish
French
Italian
Portuguese
Japanese
Korean
Arabic
Russian