News Details
Condensation phosphate coating crosslinking agent
2017-6-24 17:53:52
Condensation phosphate coating crosslinking agent
Since the 1960s, condensation phosphate has been used as crosslinking agent, most of which are the condensation of aluminum phosphate, zinc phosphate and magnesium phosphate, the degree of condensation and the crosslinking temperature are different.
The use of aluminum triphosphate is the most common in normal temperature. Mix well before use and limit it to a certain amount of time. Water glass coating and crosslinking agent for two groups of packaging.
The condensation of aluminum phosphate is weak acid, hydrolysis release of the proton to make the water glass gel, the formation of silicic acid sol. The formation of Na + in the water glass and the formation of Na + in the water glass, which makes the Na + be fixed. There are many researches on aluminum phosphate in China, and the two kinds of packaging of exterior wall coatings have been seen.
Coating water resistance depends on the condensation degree of aluminum phosphate, condensation degree and is associated with proportioning and roasting temperature, general proportioning, Al2O3, H3PO4 = 1:1.5 ~ 3, calcination temperature is 500 ~ 700 ℃, roasting time for 8 to 12 hours. This kind of exterior wall coating is waterproof although good, but adornment sex, construction sex is bad, two components once mix must be used in short time. These shortcomings are yet to be improved.
The coating of vinyl chloride resin as the main film material is called vinyl chloride resin paint. It is widely used in anti-chemical corrosion,
Perchloroethylene resin was dissolved in volatile solvents and added plasticizer, filler, etc.
Perchloroethylene resin: mainly to make the film have good chemical resistance, water resistance and weather resistance. Other resins in vinyl perchloride paint: the main effect is to overcome the disadvantages such as poor adhesion, small gloss and bad weather. The addition of a toughening agent is designed to enhance the flexible properties of the paint film. The chlorinated ethylene is easy to break down under the influence of light and heat. Adding stabilizer can prevent decomposition and prolong the life of paint film.
In the case of vinyl chloride resin paint, a certain solvent must be added to dissolve and dilute the vinyl chloride resin. Commonly used solvents have acetone, butanone, amyl acetate, acetic acid ethyl ester, benzene, toluene, xylene and dichloroethane 200 # solvent gasoline, ethanol, butanol, etc., also cannot be used in mixed lacquer, or you will make the chlorinated polyvinyl chloride resin precipitation and metamorphism.
The suitable pigment can increase the strength and adhesion of the paint film, prevent the sunlight from shining on the paint film, make the paint film have certain color.
Chinese name: Diethyl toluene diamine(DETDA)
Physical and chemical properties: light yellow transparent liquid, slightly soluble in water, soluble in alcohols, ethers, ketones and other polar organic solvents, and polyether, polyester polyol compatibility.
Density 1.022
Viscosity (20 ℃) ??mPa·ss290±10
Pour Point ℃-9
Boiling point of310°C
Flash Point°C161.1°C
Performance of vinyl perchloride coatings. The paint film can be dry at room temperature for two hours, much faster than the drying time of oily paint, which is more than twice as dry as nitrocellulose. Excellent chemical stability. The stability of alcohol, lubricating oil, oxygen, ozone, etc. Good atmospheric stability. It has good water resistance and excellent antibacterial properties. It has anti - mold, anti - humidity and anti - salt spray. It has non-delayed combustion performance and can be used for fireproof paint. It has good cold resistance. The toughness of the paint film is worse than the nitrocellulose paint, and the polishing is worse than the nitrocellulose paint. Poor heat resistance. Usually only suitable for use under 60 ℃ environment.
Anticorrosive paint: it has excellent corrosion resistance, acid and alkali resistance, moisture proof and mildew proof. It has three kinds of primer, enamel and varnish.
External paint: the paint film is dry and quick, bright, can be sanded, has good weather resistance, mainly used in electrical equipment and agricultural machinery and other finishing.
Wood paint: good fire resistance, mildew resistance and chemical resistance.
Other special perchloroethylene paint: enamel for machine and machine equipment, used for paper moisture-proof vinyl perchloride paint.
Basic knowledge of asphalt paint
The starting ray of asphalt as the main film material is called asphalt coating. Bituminous coatings can be applied to the surface of metal, concrete and wood.
Asphalt coating has good water resistance, moisture proof, acid and alkali resistance, and abundant resources and cheap price. But the weather is not good, so it is rarely used for outdoor finishing.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Since the 1960s, condensation phosphate has been used as crosslinking agent, most of which are the condensation of aluminum phosphate, zinc phosphate and magnesium phosphate, the degree of condensation and the crosslinking temperature are different.
The use of aluminum triphosphate is the most common in normal temperature. Mix well before use and limit it to a certain amount of time. Water glass coating and crosslinking agent for two groups of packaging.
The condensation of aluminum phosphate is weak acid, hydrolysis release of the proton to make the water glass gel, the formation of silicic acid sol. The formation of Na + in the water glass and the formation of Na + in the water glass, which makes the Na + be fixed. There are many researches on aluminum phosphate in China, and the two kinds of packaging of exterior wall coatings have been seen.
Coating water resistance depends on the condensation degree of aluminum phosphate, condensation degree and is associated with proportioning and roasting temperature, general proportioning, Al2O3, H3PO4 = 1:1.5 ~ 3, calcination temperature is 500 ~ 700 ℃, roasting time for 8 to 12 hours. This kind of exterior wall coating is waterproof although good, but adornment sex, construction sex is bad, two components once mix must be used in short time. These shortcomings are yet to be improved.
The coating of vinyl chloride resin as the main film material is called vinyl chloride resin paint. It is widely used in anti-chemical corrosion,
Perchloroethylene resin was dissolved in volatile solvents and added plasticizer, filler, etc.
Perchloroethylene resin: mainly to make the film have good chemical resistance, water resistance and weather resistance. Other resins in vinyl perchloride paint: the main effect is to overcome the disadvantages such as poor adhesion, small gloss and bad weather. The addition of a toughening agent is designed to enhance the flexible properties of the paint film. The chlorinated ethylene is easy to break down under the influence of light and heat. Adding stabilizer can prevent decomposition and prolong the life of paint film.
In the case of vinyl chloride resin paint, a certain solvent must be added to dissolve and dilute the vinyl chloride resin. Commonly used solvents have acetone, butanone, amyl acetate, acetic acid ethyl ester, benzene, toluene, xylene and dichloroethane 200 # solvent gasoline, ethanol, butanol, etc., also cannot be used in mixed lacquer, or you will make the chlorinated polyvinyl chloride resin precipitation and metamorphism.
The suitable pigment can increase the strength and adhesion of the paint film, prevent the sunlight from shining on the paint film, make the paint film have certain color.
Chinese name: Diethyl toluene diamine(DETDA)
Physical and chemical properties: light yellow transparent liquid, slightly soluble in water, soluble in alcohols, ethers, ketones and other polar organic solvents, and polyether, polyester polyol compatibility.
Density 1.022
Viscosity (20 ℃) ??mPa·ss290±10
Pour Point ℃-9
Boiling point of310°C
Flash Point°C161.1°C
Performance of vinyl perchloride coatings. The paint film can be dry at room temperature for two hours, much faster than the drying time of oily paint, which is more than twice as dry as nitrocellulose. Excellent chemical stability. The stability of alcohol, lubricating oil, oxygen, ozone, etc. Good atmospheric stability. It has good water resistance and excellent antibacterial properties. It has anti - mold, anti - humidity and anti - salt spray. It has non-delayed combustion performance and can be used for fireproof paint. It has good cold resistance. The toughness of the paint film is worse than the nitrocellulose paint, and the polishing is worse than the nitrocellulose paint. Poor heat resistance. Usually only suitable for use under 60 ℃ environment.
Anticorrosive paint: it has excellent corrosion resistance, acid and alkali resistance, moisture proof and mildew proof. It has three kinds of primer, enamel and varnish.
External paint: the paint film is dry and quick, bright, can be sanded, has good weather resistance, mainly used in electrical equipment and agricultural machinery and other finishing.
Wood paint: good fire resistance, mildew resistance and chemical resistance.
Other special perchloroethylene paint: enamel for machine and machine equipment, used for paper moisture-proof vinyl perchloride paint.
Basic knowledge of asphalt paint
The starting ray of asphalt as the main film material is called asphalt coating. Bituminous coatings can be applied to the surface of metal, concrete and wood.
Asphalt coating has good water resistance, moisture proof, acid and alkali resistance, and abundant resources and cheap price. But the weather is not good, so it is rarely used for outdoor finishing.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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