News Details
Weather resistance powder coating crosslinking agent
2017-3-1 17:31:57
Weather resistance powder coating crosslinking agent, HAA is one of the important curing agent with weatherability pure polyester powder coating.
The article from the theoretical and experimental results demonstrates the superiority of the curing system in many aspects, is a good substitute for TGIC system.
1 hydroxyl alkyl amide (HAA, T105) changes
According to statistics, in 2003 the global production of thermosetting powder coating 830000 tons, weather resistance of powder coating is 281000 tons, accounting for one-third of the total.
2003 weather resistance HAA in powder coating system has overtaken TGIC system ranked first. Although still the main user HAA distribution in Europe, but the rapid growth of the asia-pacific region is compelling.
Compared with the statistical data of calendar year, you can see that rising share of HAA curing powder coating system, consists of TGIC, PU and gansu urea dosage reductions, one of the most main is TGIC user declined dramatically.
The fact shows that lasted 15 years accumulative total amount has reached more than 600 kt HAA curing powder coatings has stood the test of time, and for a long time of doubt, blame, and even made a clear negative resistance. HAA replace (most) TGIC is definitely conclusion.
The fact also shows that the energy conservation and environmental protection have been the mainstream of today's society, whether HAA users increase, or TGIC, PU, comes from to human health care, reduce the pollution of the earth's environment and energy saving.
Says more about the fact that, as a product of advanced technical indicators, of course, is the first, but on the application technology and cost factors also cannot be ignored. A few years ago a considerable allegedly can replace the other products of TGIC, some even touted as "perfect", so far there is no a total replacement can alone TongJiBang. Similarly, HAA ranks, application service and strengthen the economic considerations may be another reason. Compared with its PU, TGIC unit consumption is relatively more, and their raw materials prices rise faster, also led to the increased cost of production.
2 hydroxyl alkyl amide (HAA, T105) excellent weatherability
And it can be regarded as the amine. Because of three large groups of atoms, which is connected with N affected by spatial location and repel each other, make it has some special properties, so called sterically hindered amine or hindered amine.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
A reagent grade additives
In the 1970 s it was found that hindered amine has excellent light stability, its light stability more than the current efficiency is the most effective uv absorber and quenching agent, some even as high as several times. And other light stabilizing agent, its light stability effect has nothing to do with concentration per unit area, even even polymer thin film surface layer has excellent weather resistance. It used for in the form of film coating is very important. Now it has been developed as a kind of very promising multi-functional polymer light stabilizer.
In the light of the high polymer material oxidation, hindered amine by capturing, decomposition of hydrogen peroxide, quenching free radicals excited state energy is the function of low concentration of high efficiency. The intermediate of hindered amine can generate stable nitrogen oxygen free radical and inhibit the formation of polymer alkyl free radical is crucial.
HAA since has hindered amine structure, of course, also has hindered amine (Ⅰ) performance. For example it under the condition of oxidation quickly into nitrogen oxygen free radical (Ⅱ), nitrogen oxygen free radical can effectively capture the alkyl and macromolecular alkyl free radical (P), realized the stabilization of polymers (Ⅲ).
At the same time by the hindered amine stabilization of polymer with superoxide free radical reaction, still make nitrogen oxygen free radical continuous regeneration, so as to realize the stability of polymer lasting for a long time.
This is a polyester film HAA curing even without other light stabilizer the root cause of the weather is particularly good.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
The article from the theoretical and experimental results demonstrates the superiority of the curing system in many aspects, is a good substitute for TGIC system.
1 hydroxyl alkyl amide (HAA, T105) changes
According to statistics, in 2003 the global production of thermosetting powder coating 830000 tons, weather resistance of powder coating is 281000 tons, accounting for one-third of the total.
2003 weather resistance HAA in powder coating system has overtaken TGIC system ranked first. Although still the main user HAA distribution in Europe, but the rapid growth of the asia-pacific region is compelling.
Compared with the statistical data of calendar year, you can see that rising share of HAA curing powder coating system, consists of TGIC, PU and gansu urea dosage reductions, one of the most main is TGIC user declined dramatically.
The fact shows that lasted 15 years accumulative total amount has reached more than 600 kt HAA curing powder coatings has stood the test of time, and for a long time of doubt, blame, and even made a clear negative resistance. HAA replace (most) TGIC is definitely conclusion.
The fact also shows that the energy conservation and environmental protection have been the mainstream of today's society, whether HAA users increase, or TGIC, PU, comes from to human health care, reduce the pollution of the earth's environment and energy saving.
Says more about the fact that, as a product of advanced technical indicators, of course, is the first, but on the application technology and cost factors also cannot be ignored. A few years ago a considerable allegedly can replace the other products of TGIC, some even touted as "perfect", so far there is no a total replacement can alone TongJiBang. Similarly, HAA ranks, application service and strengthen the economic considerations may be another reason. Compared with its PU, TGIC unit consumption is relatively more, and their raw materials prices rise faster, also led to the increased cost of production.
2 hydroxyl alkyl amide (HAA, T105) excellent weatherability
And it can be regarded as the amine. Because of three large groups of atoms, which is connected with N affected by spatial location and repel each other, make it has some special properties, so called sterically hindered amine or hindered amine.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
A reagent grade additives
In the 1970 s it was found that hindered amine has excellent light stability, its light stability more than the current efficiency is the most effective uv absorber and quenching agent, some even as high as several times. And other light stabilizing agent, its light stability effect has nothing to do with concentration per unit area, even even polymer thin film surface layer has excellent weather resistance. It used for in the form of film coating is very important. Now it has been developed as a kind of very promising multi-functional polymer light stabilizer.
In the light of the high polymer material oxidation, hindered amine by capturing, decomposition of hydrogen peroxide, quenching free radicals excited state energy is the function of low concentration of high efficiency. The intermediate of hindered amine can generate stable nitrogen oxygen free radical and inhibit the formation of polymer alkyl free radical is crucial.
HAA since has hindered amine structure, of course, also has hindered amine (Ⅰ) performance. For example it under the condition of oxidation quickly into nitrogen oxygen free radical (Ⅱ), nitrogen oxygen free radical can effectively capture the alkyl and macromolecular alkyl free radical (P), realized the stabilization of polymers (Ⅲ).
At the same time by the hindered amine stabilization of polymer with superoxide free radical reaction, still make nitrogen oxygen free radical continuous regeneration, so as to realize the stability of polymer lasting for a long time.
This is a polyester film HAA curing even without other light stabilizer the root cause of the weather is particularly good.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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