News Details
Zinc ion crosslinking agent for water based wood ware
2017-6-4 22:08:57
Zinc ion crosslinking agent for water based wood ware
In recent years, with the awareness of environmental protection and energy intensity, the water based wood paint has become more and more popular. Acrylate emulsion is widely used for its excellent retention, weathering and mechanical properties. However, there are some disadvantages such as high film temperature, low hardness, low resistance to viscosity and bad water resistance. Therefore, cross-linking modification is often required to improve its performance.
The high polymer materials of metal ion crosslinking have the advantages of high density, good transparency, solvability and water resistance. Metal ions (40 ~ 110 ℃) and room temperature at low temperature crosslinking acrylate copolymer emulsion is through the functional role of metal ions, and the copolymer molecular chain, with ionic bond or coordination bond to form insoluble or not melting salt or complex, by ion pair between the electrostatic effect and ion effect on gathered coating crosslinked.
Ionic crosslinking emulsion without extra crosslinking agent, with the characteristics of a single component and crosslinking speed, high efficiency, the coating has the advantages of fast drying, hardness rising fast, has successively developed and applied to the architectural coatings, floor polishing paint, paint, leather coating for the protection of cultural relics and waterproof coating, etc.
This experiment USES the core-shell emulsion polymerization technology, synthetic has a seed layer/core/shell structure styrene acrylic emulsion, because of its unique hardcore soft shell structure can significantly reduce the minimum film-forming temperature of latex (MFT), and by adding zinc oxide as the crosslinking agent, one component of the stable metal ionic crosslinking emulsion, made from the wood coatings used in acrylic and wood primer, have excellent hardness, grinding resistance, quick drying and anti aging.
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 main ingredients of the experiment: styrene (St), methyl methacrylate (MMA), acrylate (BA), acrylic (AA) : industrial grade (aggregated); The initiator potassium persulfate (KPS), anionic emulsifier sodium dodecyl benzene sulfonate (SDBS), nonionic emulsifier polyoxyethylene octyl phenyl ether (OP - 10) : industrial grade; The pH value buffer (NaHCO3), pH regulator ammonia, deionized water, zinc oxide (ZnO), dispersant TEGO760W: industrial products. The above raw materials are not purified directly.
Synthesis of nuclear shell emulsion. The deionized water metering and compound emulsifier added to the four flask containing blender mixing dissolves, then slowly add nuclear layer of monomer mixture, emulsification, about 30 min the preliminary emulsion was set aside.
In a blender, thermometer, condenser four flask with deionized water, composite emulsifier and all buffer, stirring and heating to 78 ~ 78 ℃, at the same time within 15 min drops of 10% ~ 15% of its nuclear emulsion, and 30% of the initiator solution, blue for a quick seed emulsion, after about 5 min after being bottle inside have no obvious return begin to add the rest of the nuclear emulsion, and two-thirds of the initiator solution control acceleration within 2 h drops out; Heat preservation after 015 h, and shell monomer emulsion and the rest of the initiator solution, control drops down in 2 h and insulation 015 h, and then heat up to 85 ℃ heat preservation 015 h, cooled to 60 ℃ with ammonia to adjust pH value to 7 ~ 8, cooling filter out.
Preparation of crosslinked emulsion. ZnO pretreatment: gradually add ZnO powder and appropriate dispersants to the mixer at the appropriate speed of the disperser, and make the ZnO water emulsion with 20% quality grade. In core-shell emulsion synthesis has been completed, under different temperature drops of ZnO water emulsion, heat preservation time to the emulsion appearance by the appearance of turbidity white gradually become close before adding a quick crosslinking emulsion.
Analysis and testing. Coating hardness (bruising) determination: according to ISO15184:1998.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
In recent years, with the awareness of environmental protection and energy intensity, the water based wood paint has become more and more popular. Acrylate emulsion is widely used for its excellent retention, weathering and mechanical properties. However, there are some disadvantages such as high film temperature, low hardness, low resistance to viscosity and bad water resistance. Therefore, cross-linking modification is often required to improve its performance.
The high polymer materials of metal ion crosslinking have the advantages of high density, good transparency, solvability and water resistance. Metal ions (40 ~ 110 ℃) and room temperature at low temperature crosslinking acrylate copolymer emulsion is through the functional role of metal ions, and the copolymer molecular chain, with ionic bond or coordination bond to form insoluble or not melting salt or complex, by ion pair between the electrostatic effect and ion effect on gathered coating crosslinked.
Ionic crosslinking emulsion without extra crosslinking agent, with the characteristics of a single component and crosslinking speed, high efficiency, the coating has the advantages of fast drying, hardness rising fast, has successively developed and applied to the architectural coatings, floor polishing paint, paint, leather coating for the protection of cultural relics and waterproof coating, etc.
This experiment USES the core-shell emulsion polymerization technology, synthetic has a seed layer/core/shell structure styrene acrylic emulsion, because of its unique hardcore soft shell structure can significantly reduce the minimum film-forming temperature of latex (MFT), and by adding zinc oxide as the crosslinking agent, one component of the stable metal ionic crosslinking emulsion, made from the wood coatings used in acrylic and wood primer, have excellent hardness, grinding resistance, quick drying and anti aging.
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 main ingredients of the experiment: styrene (St), methyl methacrylate (MMA), acrylate (BA), acrylic (AA) : industrial grade (aggregated); The initiator potassium persulfate (KPS), anionic emulsifier sodium dodecyl benzene sulfonate (SDBS), nonionic emulsifier polyoxyethylene octyl phenyl ether (OP - 10) : industrial grade; The pH value buffer (NaHCO3), pH regulator ammonia, deionized water, zinc oxide (ZnO), dispersant TEGO760W: industrial products. The above raw materials are not purified directly.
Synthesis of nuclear shell emulsion. The deionized water metering and compound emulsifier added to the four flask containing blender mixing dissolves, then slowly add nuclear layer of monomer mixture, emulsification, about 30 min the preliminary emulsion was set aside.
In a blender, thermometer, condenser four flask with deionized water, composite emulsifier and all buffer, stirring and heating to 78 ~ 78 ℃, at the same time within 15 min drops of 10% ~ 15% of its nuclear emulsion, and 30% of the initiator solution, blue for a quick seed emulsion, after about 5 min after being bottle inside have no obvious return begin to add the rest of the nuclear emulsion, and two-thirds of the initiator solution control acceleration within 2 h drops out; Heat preservation after 015 h, and shell monomer emulsion and the rest of the initiator solution, control drops down in 2 h and insulation 015 h, and then heat up to 85 ℃ heat preservation 015 h, cooled to 60 ℃ with ammonia to adjust pH value to 7 ~ 8, cooling filter out.
Preparation of crosslinked emulsion. ZnO pretreatment: gradually add ZnO powder and appropriate dispersants to the mixer at the appropriate speed of the disperser, and make the ZnO water emulsion with 20% quality grade. In core-shell emulsion synthesis has been completed, under different temperature drops of ZnO water emulsion, heat preservation time to the emulsion appearance by the appearance of turbidity white gradually become close before adding a quick crosslinking emulsion.
Analysis and testing. Coating hardness (bruising) determination: according to ISO15184:1998.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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