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Nonylphenol modified amine coating crosslinking agent
2017-8-2 11:52:35
Nonylphenol modified amine coating crosslinking agent
Experiment on the crosslinking agent of nonylphenol modified amine coatings: epoxy resin. Avatar370 infrared spectrometer; TGA/SDTA851 differential thermo-thermal analyzer; WDW1400 universal tensile testing machine; XCJ500 pendulum impact testing machine; NDJ - 1 rotation viscometer.
Experimental method in a blender, condenser, thermometer, dropping funnel of the reactor, add the amount of calculation of amine and nonylphenol, stir well and natural heat up to 40 ℃, heating up to 60 ℃, drops of 36% formaldehyde solution (or direct addition polymerization formaldehyde); After formaldehyde is added, the reaction temperature continues to react 1 ~ 2.5 h. Vacuum dehydration, ready to synthesize products.
The synthesis of nonylphenol modified polyamine was studied by using the above experimental method, and the synthesis of triethylene tetramine and polyethylene polyamine was studied by using nonylphenol respectively.
Worth mentioning is, whether it is a kind of amine reactions are exothermic reaction, the initial reaction temperature at 60 ℃ which can control the reaction. It was found that the reaction of nonylphenol and polyamine was stable and easy to control. The modified triethylene tetramine and polyethylene polyamines have been stored for a long time without any changes. The depth of the modified color depends on the color of the raw material and the control of the temperature of the preparation process. The lower the temperature, the lighter the color.
Synthesis of various aspects of performance, determination of nonyl phenol: formaldehyde: polyamines = 1:1.1.2 is preferred. 2.2 modification of the performance characterization of 2.2.1 absorbent multiple amine itself can be used as the crosslinking agent of epoxy resin, but its defect is easy bibulous, toxic, and small ratio of epoxy resin, resulting in damp environment is not easy to crosslinking, workers operating inconvenience, physical properties of the crosslinked brittle, etc. Firstly, the changes of water absorption performance were investigated and compared with the T31 crosslinking agent.
Nonyl phenol modified TETA and bibulous rate is significantly reduced after the PETA, visible nonyl phenol modified polyamine in water imbibition amine has improved more than raw material and can be used for a long time, even can also be used in damp environment. However, the water absorption rate of T31 is slightly higher than that in the market, which may be related to the different types of amine used in T31.
The two kinds of modified amine synthesized by nonylphenol and formaldehyde and polyethylene amine and triethylene tetramine were detected by infrared spectroscopy.
It is obvious that the absorption peak near 1600,15000.1450 cm-1, C = C expansion vibration absorption peak of the benzene ring skeleton in nonylphenol, indicates the existence of benzene ring. There is also an obvious absorption peak near 820cm-1, not only one of 780 ~ 760cm-1.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
Experiment on the crosslinking agent of nonylphenol modified amine coatings: epoxy resin. Avatar370 infrared spectrometer; TGA/SDTA851 differential thermo-thermal analyzer; WDW1400 universal tensile testing machine; XCJ500 pendulum impact testing machine; NDJ - 1 rotation viscometer.
Experimental method in a blender, condenser, thermometer, dropping funnel of the reactor, add the amount of calculation of amine and nonylphenol, stir well and natural heat up to 40 ℃, heating up to 60 ℃, drops of 36% formaldehyde solution (or direct addition polymerization formaldehyde); After formaldehyde is added, the reaction temperature continues to react 1 ~ 2.5 h. Vacuum dehydration, ready to synthesize products.
The synthesis of nonylphenol modified polyamine was studied by using the above experimental method, and the synthesis of triethylene tetramine and polyethylene polyamine was studied by using nonylphenol respectively.
Worth mentioning is, whether it is a kind of amine reactions are exothermic reaction, the initial reaction temperature at 60 ℃ which can control the reaction. It was found that the reaction of nonylphenol and polyamine was stable and easy to control. The modified triethylene tetramine and polyethylene polyamines have been stored for a long time without any changes. The depth of the modified color depends on the color of the raw material and the control of the temperature of the preparation process. The lower the temperature, the lighter the color.
Synthesis of various aspects of performance, determination of nonyl phenol: formaldehyde: polyamines = 1:1.1.2 is preferred. 2.2 modification of the performance characterization of 2.2.1 absorbent multiple amine itself can be used as the crosslinking agent of epoxy resin, but its defect is easy bibulous, toxic, and small ratio of epoxy resin, resulting in damp environment is not easy to crosslinking, workers operating inconvenience, physical properties of the crosslinked brittle, etc. Firstly, the changes of water absorption performance were investigated and compared with the T31 crosslinking agent.
Nonyl phenol modified TETA and bibulous rate is significantly reduced after the PETA, visible nonyl phenol modified polyamine in water imbibition amine has improved more than raw material and can be used for a long time, even can also be used in damp environment. However, the water absorption rate of T31 is slightly higher than that in the market, which may be related to the different types of amine used in T31.
The two kinds of modified amine synthesized by nonylphenol and formaldehyde and polyethylene amine and triethylene tetramine were detected by infrared spectroscopy.
It is obvious that the absorption peak near 1600,15000.1450 cm-1, C = C expansion vibration absorption peak of the benzene ring skeleton in nonylphenol, indicates the existence of benzene ring. There is also an obvious absorption peak near 820cm-1, not only one of 780 ~ 760cm-1.
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 addition, between 2800 ~ 2966cm-1, there is a strong symmetric and asymmetric telescopic vibration absorption peak of methyl and methylene C = H, and the methyl and methylene are present in the methyl delta c-h absorption peaks near 1380cm-1. The absorption peaks of 3360 and 3290cm-1 formed a non-obvious double peak, indicating the presence of beramine and secondary amine n-h bonds, and may have associated hydrogen bonds.
The c-n of 1262 ~ 1266cm-1 should be absorbed by the c-n expansion vibration absorption peak of aliphatic group. 3 epoxy resin modified amine is used as the crosslinking agent 3.1 the heating effect of the crosslinking reaction respectively modified TETA, modified PEPA crosslinking agent with epoxy cross-linking reaction, by thermogravimetric analyzer, the exothermic reaction.
The two modified amine and epoxy resin reaction when the biggest exothermic peak temperature at 80 ℃, modified PEPA low exothermic peak was only 3, modified TETA exothermic peak is as high as 8.
The exothermic peaks of both types of amine are wide and the response is slow. If the crosslinking reaction is determined at room temperature, the thermal stress generated by the reaction can basically be released without affecting the physical properties of the crosslinking product.
Of crosslinking performance as a crosslinking agent of epoxy resin, we will be of two kinds of modified amine with E - 51 epoxy resin respectively 30%, 40%, and the crosslinking at room temperature for 24 h, examines the different dosage of crosslinking agent on the crosslinking performance impact.
Nonyl phenol modified amine and no.t31.welcome crosslinking agent, and the epoxy resin with wider than quantity, the quantity is within 30% ~ 40% can be very good crosslinking, to cement base surface coating adhesion can reach level. In addition, the impact strength of the epoxy resin crosslinking agent with modified amine is significantly higher than that of T31.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
In addition, between 2800 ~ 2966cm-1, there is a strong symmetric and asymmetric telescopic vibration absorption peak of methyl and methylene C = H, and the methyl and methylene are present in the methyl delta c-h absorption peaks near 1380cm-1. The absorption peaks of 3360 and 3290cm-1 formed a non-obvious double peak, indicating the presence of beramine and secondary amine n-h bonds, and may have associated hydrogen bonds.
The c-n of 1262 ~ 1266cm-1 should be absorbed by the c-n expansion vibration absorption peak of aliphatic group. 3 epoxy resin modified amine is used as the crosslinking agent 3.1 the heating effect of the crosslinking reaction respectively modified TETA, modified PEPA crosslinking agent with epoxy cross-linking reaction, by thermogravimetric analyzer, the exothermic reaction.
The two modified amine and epoxy resin reaction when the biggest exothermic peak temperature at 80 ℃, modified PEPA low exothermic peak was only 3, modified TETA exothermic peak is as high as 8.
The exothermic peaks of both types of amine are wide and the response is slow. If the crosslinking reaction is determined at room temperature, the thermal stress generated by the reaction can basically be released without affecting the physical properties of the crosslinking product.
Of crosslinking performance as a crosslinking agent of epoxy resin, we will be of two kinds of modified amine with E - 51 epoxy resin respectively 30%, 40%, and the crosslinking at room temperature for 24 h, examines the different dosage of crosslinking agent on the crosslinking performance impact.
Nonyl phenol modified amine and no.t31.welcome crosslinking agent, and the epoxy resin with wider than quantity, the quantity is within 30% ~ 40% can be very good crosslinking, to cement base surface coating adhesion can reach level. In addition, the impact strength of the epoxy resin crosslinking agent with modified amine is significantly higher than that of T31.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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