News Details
Paint USES room temperature self-crosslinking system
2017-5-25 11:47:51
Paint USES room temperature self-crosslinking system
Wood in under the condition of high temperature deformation, color change, so the drying of wood coatings curing temperature is not high, generally is 60 ℃, this paper adopts the diacetone acrylamide (DAAM)/adipic acid hydrazide (ADH) as crosslinking system, and it has room temperature crosslinking, film-forming transparent not yellowing, improve the hardness, etc.
The effect of different shade non-ion emulsifier on emulsion. In contrast the three different anionic emulsifier on the emulsion particle size and the minimum film-forming temperature and the influence of film hardness, also added a small amount of nonionic emulsifier TO improve the chemical stability of the emulsion, the balance after the performance of various aspects, finally it is concluded that 1.5% emulsifier dosage, K12: a: 28 TO 7 dosage were 0.2:1.0:0.3 is most appropriate.
The effect of different synthetic processes on emulsion performance. It is well known that the minimum film temperature is increasing with the glass temperature of the emulsion. The study of how to keep the glass temperature unchanged and minimized film temperature is ongoing, which can reduce the amount of film additives. By adjusting the size of the emulsion and introducing the non-ionic emulsifier, the effect is more obvious by modifying the synthesis process of the emulsion.
Core-shell emulsion polymerization is the development of the seed emulsion polymerization, if seed polymerization and subsequent polymerization with different monomers, the formation of core-shell structure of colloidal particles, the core and shell of the grafted layer is formed on the interface, increase the compatibility of both and stick relay, improve the mechanical properties. The structure of the shell has an effect on the glass temperature of the emulsion and the minimum film temperature.
Using core-shell emulsion polymerization under the condition of invariable can guarantee the hardness, improve the toughness of the paint film, at the same time effectively reduce the minimum film-forming temperature of latex, can reduce the use of film-forming agent, thereby, improve the drying speed and VOC emissions. The emulsion polymerization of nuclear shell has obvious advantages, but it also has a complicated process, which requires a secondary emulsion and more precise reaction control. The production conditions of existing emulsion polymerization, which are almost fully automatic, have the basic conditions of mass production.
Chinese name: Diethyl toluene diamine(DETDA)
Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
Hazard Class: 6.1
The effect of the DAAM/ADH crosslinking system on emulsion performance. In choice of non-ionic emulsifier, in principle is in order to improve the chemical stability of the emulsion and the freeze-thaw stability, but we still want to consider other factors: one is the resistance to water as much as possible, do not affect the emulsion film; Non-ionic emulsifiers have a large effect on water resistance of the emulsion, especially non-ionic emulsifiers in which the EO is embedded in large Numbers. 2 it is can not obviously improve the emulsion particle size, because of the high non-ionic emulsifier of CMC, can effectively less reaction micelle formation, therefore to reduce the emulsion particle size, and the emulsion particle size is small, the gap between the particles smaller, easier to merge into the membrane.
In this paper, we use a polyethylene glycol polyoxyethylene ether (TO -7) in this paper TO consider the factors of these two factors. Different proportions of the TO - 7 of emulsion, the effects of experimental quantitative for the dosage of emulsifier 1.5%, glass transition temperature of 60 ℃.
Coating insulation performance test. Respectively homemade FEHS -t and FEHS - C besmear to brush in 300 mm x 200 mm x 30 mm of glass, coating thickness of 0.5 mm, with 100 W incandescent lamp heating, with thermocouple temperature JiKong temperature and temperature measurement, each ascending to a certain temperature, constant temperature 0.5 h.
FEHS - C coating thermal insulation effect is better than that of FEHS -t coating, this is because the coating by adding a certain amount with loose layer structure of magic bead light powder, in the dry film, a cascade structure, with latex particle coalescence resistance thermal resistance of water, so the coating in the beautiful pearl color at the same time, more excellent insulation, water resistance, alkali resistance and washing resistance.
Selects the alkene organic silicone monomers and acrylic acid (ester), allyl hydroxyethyl ether as raw material, respectively, using two different polymerization methods (step and two steps) in acidic environment, with a REDOX initiator simultaneous implementation of open loop, the emulsification of soap-free emulsion polymerization, free radical product without emulsifier, avoided to resin emulsifier flaws and environmental pollution. With L9 (34) orthogonal test to optimize formula, pH value of 5 + / - 0.5 when polymerization system, initiator [m (K2S2O8) : m (NaHSO3) = 2:1) the dosage of monomer 0.5% of the total quality, the best proportion of monomers for: m (MAA) : m (AOE) : m (YDH) : m (V4) : m (MMA) = 8, 9:4:20:59.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Wood in under the condition of high temperature deformation, color change, so the drying of wood coatings curing temperature is not high, generally is 60 ℃, this paper adopts the diacetone acrylamide (DAAM)/adipic acid hydrazide (ADH) as crosslinking system, and it has room temperature crosslinking, film-forming transparent not yellowing, improve the hardness, etc.
The effect of different shade non-ion emulsifier on emulsion. In contrast the three different anionic emulsifier on the emulsion particle size and the minimum film-forming temperature and the influence of film hardness, also added a small amount of nonionic emulsifier TO improve the chemical stability of the emulsion, the balance after the performance of various aspects, finally it is concluded that 1.5% emulsifier dosage, K12: a: 28 TO 7 dosage were 0.2:1.0:0.3 is most appropriate.
The effect of different synthetic processes on emulsion performance. It is well known that the minimum film temperature is increasing with the glass temperature of the emulsion. The study of how to keep the glass temperature unchanged and minimized film temperature is ongoing, which can reduce the amount of film additives. By adjusting the size of the emulsion and introducing the non-ionic emulsifier, the effect is more obvious by modifying the synthesis process of the emulsion.
Core-shell emulsion polymerization is the development of the seed emulsion polymerization, if seed polymerization and subsequent polymerization with different monomers, the formation of core-shell structure of colloidal particles, the core and shell of the grafted layer is formed on the interface, increase the compatibility of both and stick relay, improve the mechanical properties. The structure of the shell has an effect on the glass temperature of the emulsion and the minimum film temperature.
Using core-shell emulsion polymerization under the condition of invariable can guarantee the hardness, improve the toughness of the paint film, at the same time effectively reduce the minimum film-forming temperature of latex, can reduce the use of film-forming agent, thereby, improve the drying speed and VOC emissions. The emulsion polymerization of nuclear shell has obvious advantages, but it also has a complicated process, which requires a secondary emulsion and more precise reaction control. The production conditions of existing emulsion polymerization, which are almost fully automatic, have the basic conditions of mass production.
Chinese name: Diethyl toluene diamine(DETDA)
Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
Hazard Class: 6.1
The effect of the DAAM/ADH crosslinking system on emulsion performance. In choice of non-ionic emulsifier, in principle is in order to improve the chemical stability of the emulsion and the freeze-thaw stability, but we still want to consider other factors: one is the resistance to water as much as possible, do not affect the emulsion film; Non-ionic emulsifiers have a large effect on water resistance of the emulsion, especially non-ionic emulsifiers in which the EO is embedded in large Numbers. 2 it is can not obviously improve the emulsion particle size, because of the high non-ionic emulsifier of CMC, can effectively less reaction micelle formation, therefore to reduce the emulsion particle size, and the emulsion particle size is small, the gap between the particles smaller, easier to merge into the membrane.
In this paper, we use a polyethylene glycol polyoxyethylene ether (TO -7) in this paper TO consider the factors of these two factors. Different proportions of the TO - 7 of emulsion, the effects of experimental quantitative for the dosage of emulsifier 1.5%, glass transition temperature of 60 ℃.
Coating insulation performance test. Respectively homemade FEHS -t and FEHS - C besmear to brush in 300 mm x 200 mm x 30 mm of glass, coating thickness of 0.5 mm, with 100 W incandescent lamp heating, with thermocouple temperature JiKong temperature and temperature measurement, each ascending to a certain temperature, constant temperature 0.5 h.
FEHS - C coating thermal insulation effect is better than that of FEHS -t coating, this is because the coating by adding a certain amount with loose layer structure of magic bead light powder, in the dry film, a cascade structure, with latex particle coalescence resistance thermal resistance of water, so the coating in the beautiful pearl color at the same time, more excellent insulation, water resistance, alkali resistance and washing resistance.
Selects the alkene organic silicone monomers and acrylic acid (ester), allyl hydroxyethyl ether as raw material, respectively, using two different polymerization methods (step and two steps) in acidic environment, with a REDOX initiator simultaneous implementation of open loop, the emulsification of soap-free emulsion polymerization, free radical product without emulsifier, avoided to resin emulsifier flaws and environmental pollution. With L9 (34) orthogonal test to optimize formula, pH value of 5 + / - 0.5 when polymerization system, initiator [m (K2S2O8) : m (NaHSO3) = 2:1) the dosage of monomer 0.5% of the total quality, the best proportion of monomers for: m (MAA) : m (AOE) : m (YDH) : m (V4) : m (MMA) = 8, 9:4:20:59.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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