News Details
Interlinking agent for weather-resistant powder coating
2017-5-9 11:16:02
Interlinking agent for weather-resistant powder coating it is one of the most active and focused areas of research. The kind of coating system we discuss is based on the type of crosslinking agent.
So far, the most mature weather-resistant powder coating has been the triglycyanuric acid triglyceride (TGIC) system. It is well known that the three epoxy functional groups in the TGIC molecular structure provide sufficient activity, while the stable triazine ring structure guarantees good heat resistance and weather-resistance.
The system can regulate the reaction through different promoter activity, therefore, it can almost meet highlights, low light, texture, super weather resistance and high and low temperature crosslinking and various application requirements. In addition, combined with its storage stability, easy to melt to form uniform system, stable and adjustable formula, no by-products is released by crosslinking and other characteristics, has been favored by the market. However, further studies have shown that TGIC strong excitant and potential carcinogenicity, make countries gradually limiting the use of TGIC and Europe as early as 1998 issued toxicity notation to limit its use, from now on, on a global scale the rise of TGIC alternative product development.
In numerous TGIC alternative development achievement, the typical application (there are) are mainly hydroxyl alkyl amide (HAA) and glycidyl ester of polybasic acid crosslinking agent (PT910), three different melamine urea acid - beta - methyl glycidyl ester (MT239), liquid, aliphatic epoxy ethane compounds (Uranox); Polyacrylate (GMA resin); Hydroxy polyester/enclosed isocyanate (PU), hydroxypolyester/Glycoluril, etc., various substitutes for powder coating performance have their advantages and disadvantages.
TGIC has the most balanced performance in addition to toxicity. And HAA except for small molecules escape (pinhole) lead to film the most serious, the rest of the performance is the most balanced, plus the cost is moderate, easy industrialization, etc, therefore, it is in numerous TGIC alternatives, the most acceptable for market.
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
An antioxidant is a substance that inhibits or slows the degradation of the polymer, which is used to prevent the yellowing of the coating during baking. Antioxidant variety many, the effect also is not the same, according to its antioxidant mechanism can be divided into two categories, one kind is chain termination type antioxidants, such antioxidants in polymer and produce free radicals reaction interrupt the growth of the chain, also known as antioxidant, another kind is preventive antioxidant, the antioxidant can inhibit or slow down cause the formation of free radicals in the process, also known as auxiliary antioxidants. The main anti-oxygen agent has the retarded phenol, the secaniline, the prophylactic antioxidant, the phosphatate, dithiocarbamate metal salts, etc.
Main antioxidants of hindered phenolic antioxidants with good heat aging resistance, and not easy yellowing, commonly used in light colors such as HAA hot baking formula system, such as IRGANOX ? 1010, IRGANOX ? 1076, IRGANOX ? 245 etc. But the study found that they had a pronounced "pinking" in the presence of NOx, so they could not be used for baking in a gas stove.
Amines have a tendency to be yellowing, usually not for light-colored systems. Preventive antioxidant generally have good yellowing resistance, often also can be used for HAA systems, such as phosphite ester antioxidant IRGASFOS ? 126 etc.
Antioxidants with different types or structures, often can obtain better antioxidant yellowing effect (synergy), such as phenol/phosphite ester mixture IRGANOX ? 225 B, than used alone one of the ingredients, has better antioxidant yellowing effect.
Consider from the Angle of saving the cost of crosslinking, users increasingly tend to use gas furnace baking powder, and occurring in the process of NOx exhaust gas type in baking coating causes more severe oxidation action such as yellowing, although some antioxidant system of hot baking yellowing oxide has good inhibition effect, but the inhibition of gas baking yellowing effect is not obvious. So you must use a special antioxidants, such as more aromatic ring lactone class antioxidant HP - 136, yellowing of heat aging and gas baking yellowing all has the very good inhibitory effect, allegedly, if its with phosphite ester antioxidant, effect is better.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
So far, the most mature weather-resistant powder coating has been the triglycyanuric acid triglyceride (TGIC) system. It is well known that the three epoxy functional groups in the TGIC molecular structure provide sufficient activity, while the stable triazine ring structure guarantees good heat resistance and weather-resistance.
The system can regulate the reaction through different promoter activity, therefore, it can almost meet highlights, low light, texture, super weather resistance and high and low temperature crosslinking and various application requirements. In addition, combined with its storage stability, easy to melt to form uniform system, stable and adjustable formula, no by-products is released by crosslinking and other characteristics, has been favored by the market. However, further studies have shown that TGIC strong excitant and potential carcinogenicity, make countries gradually limiting the use of TGIC and Europe as early as 1998 issued toxicity notation to limit its use, from now on, on a global scale the rise of TGIC alternative product development.
In numerous TGIC alternative development achievement, the typical application (there are) are mainly hydroxyl alkyl amide (HAA) and glycidyl ester of polybasic acid crosslinking agent (PT910), three different melamine urea acid - beta - methyl glycidyl ester (MT239), liquid, aliphatic epoxy ethane compounds (Uranox); Polyacrylate (GMA resin); Hydroxy polyester/enclosed isocyanate (PU), hydroxypolyester/Glycoluril, etc., various substitutes for powder coating performance have their advantages and disadvantages.
TGIC has the most balanced performance in addition to toxicity. And HAA except for small molecules escape (pinhole) lead to film the most serious, the rest of the performance is the most balanced, plus the cost is moderate, easy industrialization, etc, therefore, it is in numerous TGIC alternatives, the most acceptable for market.
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
An antioxidant is a substance that inhibits or slows the degradation of the polymer, which is used to prevent the yellowing of the coating during baking. Antioxidant variety many, the effect also is not the same, according to its antioxidant mechanism can be divided into two categories, one kind is chain termination type antioxidants, such antioxidants in polymer and produce free radicals reaction interrupt the growth of the chain, also known as antioxidant, another kind is preventive antioxidant, the antioxidant can inhibit or slow down cause the formation of free radicals in the process, also known as auxiliary antioxidants. The main anti-oxygen agent has the retarded phenol, the secaniline, the prophylactic antioxidant, the phosphatate, dithiocarbamate metal salts, etc.
Main antioxidants of hindered phenolic antioxidants with good heat aging resistance, and not easy yellowing, commonly used in light colors such as HAA hot baking formula system, such as IRGANOX ? 1010, IRGANOX ? 1076, IRGANOX ? 245 etc. But the study found that they had a pronounced "pinking" in the presence of NOx, so they could not be used for baking in a gas stove.
Amines have a tendency to be yellowing, usually not for light-colored systems. Preventive antioxidant generally have good yellowing resistance, often also can be used for HAA systems, such as phosphite ester antioxidant IRGASFOS ? 126 etc.
Antioxidants with different types or structures, often can obtain better antioxidant yellowing effect (synergy), such as phenol/phosphite ester mixture IRGANOX ? 225 B, than used alone one of the ingredients, has better antioxidant yellowing effect.
Consider from the Angle of saving the cost of crosslinking, users increasingly tend to use gas furnace baking powder, and occurring in the process of NOx exhaust gas type in baking coating causes more severe oxidation action such as yellowing, although some antioxidant system of hot baking yellowing oxide has good inhibition effect, but the inhibition of gas baking yellowing effect is not obvious. So you must use a special antioxidants, such as more aromatic ring lactone class antioxidant HP - 136, yellowing of heat aging and gas baking yellowing all has the very good inhibitory effect, allegedly, if its with phosphite ester antioxidant, effect is better.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Spanish
French
Italian
Portuguese
Japanese
Korean
Arabic
Russian