News Details
Silicone emulsion coating crosslinking agent
2017-6-1 11:03:56
Silicone emulsion coating crosslinking agent
The preparation of silicone emulsion and non-db-550 water-based acrylic emulsion in centrifuge centrifuge, rotating at 3, 000 r/min, 30 min centrifuge time. The experimental results show that the emulsion is not found in the emulsion and layer. It shows that the emulsion is stable and good for storage.
Water absorption test. Join the bibulous rate of latex film after the DB - 550 had a larger decrease, the reason is because the hydrophobicity of silicone in the DB - 550 and the latex film crosslinked.
Infrared spectroscopy. The preparation of the sample was made by using the halide laminated film method, and the two parallel KBr pieces were taken by the press mechanism, and the emulsion film was dissolved by acetone and coated with potassium bromide. Dry the coated potassium bromide in the infrared oven to keep the solvent. When measured, the screen was scanned 20 times in the air as a background, and the scan ranged from 4, 000 to 400 cm - 1.
The wave number 2, 960 cm-1 and 2874 cm - 1, the c-h scale vibrational peaks of CH3 and CH2. The wave number is 1, 720 cm minus 1 is the scale of the expansion of C equals O; The wave number is 1 651 cm - 1 and 1 605 cm - 1, which is the characteristic peak of c-n and n-h, and the wave number is 1 026 cm - 1 and 990 cm - 1, showing the Si -o-si characteristic peak. The wave number is 843 cm - 1 for the expansion of Si - C. The test results show that the db-550 is well connected with acetyl acetate, which helps improve the performance of the latex film.
Heat reanalysis test. Of latex film will adopt Q50 thermogravimetric analyzer test, test for nitrogen atmosphere, the heating rate of 10 ℃ / min, higher temperature range from room temperature to 550 ℃. Hydrolysis of DB - 550 crosslinked and the amine and AAEM acetoacetic acid base of crosslinking reaction caused by, the size of the mesh structure formed by thermal decomposition temperature to increase.
Chinese name: Diethyl toluene diamine(DETDA)
Physical and chemical properties: light yellow transparent liquid, slightly soluble in water, soluble in alcohols, ethers, ketones and other polar organic solvents, and polyether, polyester polyol compatibility.
Density 1.022
Viscosity (20 ℃) ??mPa·ss290±10
Pour Point ℃-9
Boiling point of310°C
Flash Point°C161.1°C
DSC test. The emulsion membrane was tested by using the Q20 differential scanning calorimeter produced by the American TA corporation, which was tested with a nitrogen atmosphere and a two-step warming process. Initial temperature to eliminate the thermal history, the heating rate control is 20 ℃ / min, temperature program after the results have been measured, the heating rate of 10 ℃ / min, scanning temperature range for - 40 ~ 120 ℃. measuring
The theoretical value of the experimental results is not large, the temperature and the drop rate are controlled better, and the emulsion is basically the reaction of the formula design. Curve B for emulsion with DB - 550 added form of latex film measured by DSC curve, the Tg is 25.02 ℃. The cross-linking reaction of the db-550 is visible, which increases the temperature of the glass transition.
Acetoacetate with self - crosslinking effect is used base ethyl methacrylate (AAEM) to participate in the synthesis of acrylic emulsion, with crosslinking effect is to join the DB - 550, the preparation of the self - crosslinking silicone acrylic emulsion.
The addition of the organic silicon db-550 makes the latex film's water resistance, heat resistance and glass transition temperature increase greatly.
The effect of reactive monomer dose. In order to make the adhesive has the crosslinking, add a certain amount of crosslinking monomer synthesized, this experiment using self-made multifunctional monomer M as crosslinking monomer and its dosage on the emulsion stability and the performance impact of printed products.
With the increase of M usage, the friction fastness increases, the emulsion polymerization stability decreases. While the amount of M is 3.0%, although the polymerization is stable, the friction fastness is not good enough, considering that the dosage of the selected M is 5.0% of the total amount of the monomer.
Emulsifiers are important to the performance of emulsion polymerization process and emulsion products. Considering the anionic emulsifier dispersion ability, but the poor compatibility, and non-ionic emulsifier dispersing ability is poor, but strong compatibility, this experiment adopts the LAS and NP - 10 distribution of emulsifier.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
The preparation of silicone emulsion and non-db-550 water-based acrylic emulsion in centrifuge centrifuge, rotating at 3, 000 r/min, 30 min centrifuge time. The experimental results show that the emulsion is not found in the emulsion and layer. It shows that the emulsion is stable and good for storage.
Water absorption test. Join the bibulous rate of latex film after the DB - 550 had a larger decrease, the reason is because the hydrophobicity of silicone in the DB - 550 and the latex film crosslinked.
Infrared spectroscopy. The preparation of the sample was made by using the halide laminated film method, and the two parallel KBr pieces were taken by the press mechanism, and the emulsion film was dissolved by acetone and coated with potassium bromide. Dry the coated potassium bromide in the infrared oven to keep the solvent. When measured, the screen was scanned 20 times in the air as a background, and the scan ranged from 4, 000 to 400 cm - 1.
The wave number 2, 960 cm-1 and 2874 cm - 1, the c-h scale vibrational peaks of CH3 and CH2. The wave number is 1, 720 cm minus 1 is the scale of the expansion of C equals O; The wave number is 1 651 cm - 1 and 1 605 cm - 1, which is the characteristic peak of c-n and n-h, and the wave number is 1 026 cm - 1 and 990 cm - 1, showing the Si -o-si characteristic peak. The wave number is 843 cm - 1 for the expansion of Si - C. The test results show that the db-550 is well connected with acetyl acetate, which helps improve the performance of the latex film.
Heat reanalysis test. Of latex film will adopt Q50 thermogravimetric analyzer test, test for nitrogen atmosphere, the heating rate of 10 ℃ / min, higher temperature range from room temperature to 550 ℃. Hydrolysis of DB - 550 crosslinked and the amine and AAEM acetoacetic acid base of crosslinking reaction caused by, the size of the mesh structure formed by thermal decomposition temperature to increase.
Chinese name: Diethyl toluene diamine(DETDA)
Physical and chemical properties: light yellow transparent liquid, slightly soluble in water, soluble in alcohols, ethers, ketones and other polar organic solvents, and polyether, polyester polyol compatibility.
Density 1.022
Viscosity (20 ℃) ??mPa·ss290±10
Pour Point ℃-9
Boiling point of310°C
Flash Point°C161.1°C
DSC test. The emulsion membrane was tested by using the Q20 differential scanning calorimeter produced by the American TA corporation, which was tested with a nitrogen atmosphere and a two-step warming process. Initial temperature to eliminate the thermal history, the heating rate control is 20 ℃ / min, temperature program after the results have been measured, the heating rate of 10 ℃ / min, scanning temperature range for - 40 ~ 120 ℃. measuring
The theoretical value of the experimental results is not large, the temperature and the drop rate are controlled better, and the emulsion is basically the reaction of the formula design. Curve B for emulsion with DB - 550 added form of latex film measured by DSC curve, the Tg is 25.02 ℃. The cross-linking reaction of the db-550 is visible, which increases the temperature of the glass transition.
Acetoacetate with self - crosslinking effect is used base ethyl methacrylate (AAEM) to participate in the synthesis of acrylic emulsion, with crosslinking effect is to join the DB - 550, the preparation of the self - crosslinking silicone acrylic emulsion.
The addition of the organic silicon db-550 makes the latex film's water resistance, heat resistance and glass transition temperature increase greatly.
The effect of reactive monomer dose. In order to make the adhesive has the crosslinking, add a certain amount of crosslinking monomer synthesized, this experiment using self-made multifunctional monomer M as crosslinking monomer and its dosage on the emulsion stability and the performance impact of printed products.
With the increase of M usage, the friction fastness increases, the emulsion polymerization stability decreases. While the amount of M is 3.0%, although the polymerization is stable, the friction fastness is not good enough, considering that the dosage of the selected M is 5.0% of the total amount of the monomer.
Emulsifiers are important to the performance of emulsion polymerization process and emulsion products. Considering the anionic emulsifier dispersion ability, but the poor compatibility, and non-ionic emulsifier dispersing ability is poor, but strong compatibility, this experiment adopts the LAS and NP - 10 distribution of emulsifier.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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