News Details
Emulsion polymer paint crosslinking agent
2017-6-22 12:17:11
Emulsion polymer paint crosslinking agent
The monomer, methacrylate (MAA), acrylate and nitrogen-containing functional monomers were used as crosslinking monomer, and the polymer of nuclear shell emulsion was synthesized. The polymer has been added to the diplomatic agent PAE for crosslinking modification, and it has been made to be environmentally friendly and water-based acrylic coatings. By studying the influence of various factors on coating performance, the following conclusions are drawn:
(1) the optimization of reaction conditions as follows: using sodium dodecyl sulfate, 2 ai and OP - 10 as compound emulsifier, initiator for ammonium sulfate, using core-shell emulsion polymerization process, the reaction of 3 ~ 4 h under 80 ℃, environmental diplomacy was water-borne acrylic coating.
(2) the constant temperature crosslinking system formed by the foreign union PAE has obviously improved the hardness, solvability, water resistance, crosslinking and adhesion, and the weatherability can be improved further.
Acrylate emulsion with excellent weather resistance, light fastness and low odor, etc, to promote the rapid development of the acrylate emulsion coating, and can well solve the emulsion with core-shell structure of Tg and minimum film forming temperature (MFT). At present, the method of polymerization of acrylic ester emulsion can be divided into intermittent method, equilibrium swelling method, semicontinuous method and continuous method according to the different method of adding shell monomer.
The factors affecting the properties of acrylate emulsifiers are emulsifiers, monomers and shell layer Tg [18]. At present, there are many methods for the modification of water-based acrylic coatings, such as polyurethane modification, organic silicon modification, fluorinated monomer modification and nano material modification.
The waterborne polyurethane-acrylate coatings were synthesized by uv curing technology, and the study was carried out. Jin et by two-step emulsion polymerization to synthesize a kind of used for toughening of poly (methyl methacrylate polyurethane/polymethyl methacrylate acrylate core-shell structure of emulsion, the results showed that the flexibility of the polymer emulsion has been greatly improved.
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
Huang zhibin et al prepared nano-sio2 / polyacrylate compound emulsion and studied its properties. Pan lisha et al. used organosiloxane to modify water-based hydroxy acrylic resin to make coatings that have the advantages of hardness, abrasion resistance, waterproofing and scratches.
This is because the organic siloxane monomer siloxane group will happen under the action of acid catalyst in the hydrolysis produce silanol, silicon alcohol-based polycondensation reaction with acrylic dispersions of polyols, but also occur between the molecules of polycondensation each other, form a mesh structure coating, so that organic siloxane modified waterborne hydroxyl acrylic resin coating has the properties of the hard and wear-resistant.
The results show that the formula of a highly active hydroxyl ethyl acrylate monomer and obstructive vinyl silane monomer three isopropyl oxygen radicals, choose the acid value of 35 ~ 50 mgkoh/g, hydroxyl content is about 3.5%, Tg is 25 ℃, neutralization degree was 60%, the resin and curing agent has good compatibility, preparation of two-component coating has excellent performance.
Methacrylate monomers have a higher performance than acrylate monomers. Because methyl acrylate classes more methyl chain polymerization owner, make its main chain of activity is restricted, main chain rigidity, ester base side chain has provided flexibility at the same time, makes the methyl acrylic acid monomers with hardness and toughness of the best balance, such as poly (methyl methacrylate methyl (1) is that people commonly known as organic glass; Methyl methacrylate monomers have obvious advantages over styrene because they are free of benzene, and they are more resistant to corrosion, durability, and solvability than styrene monomers.
To sum up, the manufacturers of water-based acrylate resin have a lot of choice of monomers, which not only can transform their types but also transform relative proportions and components. Water-based paint manufacturers when choosing waterborne acrylate emulsion, can not only consider "pure c" or "styrene acrylic" concept of the empty words, should use water-based acrylic resin and its actual can measure formula.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
The monomer, methacrylate (MAA), acrylate and nitrogen-containing functional monomers were used as crosslinking monomer, and the polymer of nuclear shell emulsion was synthesized. The polymer has been added to the diplomatic agent PAE for crosslinking modification, and it has been made to be environmentally friendly and water-based acrylic coatings. By studying the influence of various factors on coating performance, the following conclusions are drawn:
(1) the optimization of reaction conditions as follows: using sodium dodecyl sulfate, 2 ai and OP - 10 as compound emulsifier, initiator for ammonium sulfate, using core-shell emulsion polymerization process, the reaction of 3 ~ 4 h under 80 ℃, environmental diplomacy was water-borne acrylic coating.
(2) the constant temperature crosslinking system formed by the foreign union PAE has obviously improved the hardness, solvability, water resistance, crosslinking and adhesion, and the weatherability can be improved further.
Acrylate emulsion with excellent weather resistance, light fastness and low odor, etc, to promote the rapid development of the acrylate emulsion coating, and can well solve the emulsion with core-shell structure of Tg and minimum film forming temperature (MFT). At present, the method of polymerization of acrylic ester emulsion can be divided into intermittent method, equilibrium swelling method, semicontinuous method and continuous method according to the different method of adding shell monomer.
The factors affecting the properties of acrylate emulsifiers are emulsifiers, monomers and shell layer Tg [18]. At present, there are many methods for the modification of water-based acrylic coatings, such as polyurethane modification, organic silicon modification, fluorinated monomer modification and nano material modification.
The waterborne polyurethane-acrylate coatings were synthesized by uv curing technology, and the study was carried out. Jin et by two-step emulsion polymerization to synthesize a kind of used for toughening of poly (methyl methacrylate polyurethane/polymethyl methacrylate acrylate core-shell structure of emulsion, the results showed that the flexibility of the polymer emulsion has been greatly improved.
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
Huang zhibin et al prepared nano-sio2 / polyacrylate compound emulsion and studied its properties. Pan lisha et al. used organosiloxane to modify water-based hydroxy acrylic resin to make coatings that have the advantages of hardness, abrasion resistance, waterproofing and scratches.
This is because the organic siloxane monomer siloxane group will happen under the action of acid catalyst in the hydrolysis produce silanol, silicon alcohol-based polycondensation reaction with acrylic dispersions of polyols, but also occur between the molecules of polycondensation each other, form a mesh structure coating, so that organic siloxane modified waterborne hydroxyl acrylic resin coating has the properties of the hard and wear-resistant.
The results show that the formula of a highly active hydroxyl ethyl acrylate monomer and obstructive vinyl silane monomer three isopropyl oxygen radicals, choose the acid value of 35 ~ 50 mgkoh/g, hydroxyl content is about 3.5%, Tg is 25 ℃, neutralization degree was 60%, the resin and curing agent has good compatibility, preparation of two-component coating has excellent performance.
Methacrylate monomers have a higher performance than acrylate monomers. Because methyl acrylate classes more methyl chain polymerization owner, make its main chain of activity is restricted, main chain rigidity, ester base side chain has provided flexibility at the same time, makes the methyl acrylic acid monomers with hardness and toughness of the best balance, such as poly (methyl methacrylate methyl (1) is that people commonly known as organic glass; Methyl methacrylate monomers have obvious advantages over styrene because they are free of benzene, and they are more resistant to corrosion, durability, and solvability than styrene monomers.
To sum up, the manufacturers of water-based acrylate resin have a lot of choice of monomers, which not only can transform their types but also transform relative proportions and components. Water-based paint manufacturers when choosing waterborne acrylate emulsion, can not only consider "pure c" or "styrene acrylic" concept of the empty words, should use water-based acrylic resin and its actual can measure formula.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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