News Details
Inorganic acid paint crosslinking agent
2017-7-4 23:49:04
Inorganic acid paint crosslinking agent
In theory, all acids that can provide H + and ensure a certain concentration of H + can be used to cross-link sodium water glass, such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, acetic acid. The most common use is sulphuric acid and hydrochloric acid.
Acid and sodium silicate water glass reacts to produce silicate sol. The reaction formula is as follows: Na2O? NSiO2 + mH2O + 2 hcl2nacl + nSiO2? (m + 1) the more acid the H2O is used in the process of modification, the greater the concentration of the dissolved silica gel, the better the water resistance.
But the concentration of silica gel is too high, the colloid storage time is short, the coating is unstable. Therefore, the acid modification is generally used in the internal wall coating with less water resistance, and the products are mostly sodium glass and polyvinyl alcohol. Coating is a single group of packaging, coating performance index, paint storage, construction performance are all good.
Silicone modified polyurethane coating is a synthetic resin coating which is introduced into the main chain or side chain of the polyurethane molecule or si-c bond. Silicone coating has the advantages of good heat resistance, good weather resistance and good hydrophobicity.
Polyurethane coating has outstanding wearability, oil resistance and good weldability, but it is not ideal for heat resistance and water resistance. Therefore, the organic silicon modified polyurethane can synthesize the excellent properties of both, and make up the deficiency of polyurethane materials. As new materials are studied, the properties of silicone modified polyurethane materials will be more excellent to meet the needs of different industries and fields.
S.S.P athak et al. used sol-gel technology to prepare organic silicone urethane waterborne coatings for aluminum and aluminum alloys using organic silicon MTMS and GPTMS modified waterborne polyurethane. By Fourier transform infrared spectroscopy (FT IR), transmission electron microscope (TEM), atomic force microscope (AFM) and scanning electron microscope (SEM) had been used to characterize the structure and morphology of the coating.
The corrosion current change of the coating was analyzed through the dynamic potential polarization test. The heat resistance, water resistance and mechanical properties of the film were studied through DSC/TG, contact Angle and tensile test. Results show that the addition of organic silicon waterborne polyurethane coating enhances the corrosion resistance, flexibility and mechanical stress, the degradation of coating temperature increased to about 206 ℃, the increase of thermal stability improved. This organic silicon modified high-performance water-based polyurethane coating can be applied to aerospace, Marine, automobile and other fields.
Chinese name: Diethyl toluene diamine(DETDA)
In theory, all acids that can provide H + and ensure a certain concentration of H + can be used to cross-link sodium water glass, such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, acetic acid. The most common use is sulphuric acid and hydrochloric acid.
Acid and sodium silicate water glass reacts to produce silicate sol. The reaction formula is as follows: Na2O? NSiO2 + mH2O + 2 hcl2nacl + nSiO2? (m + 1) the more acid the H2O is used in the process of modification, the greater the concentration of the dissolved silica gel, the better the water resistance.
But the concentration of silica gel is too high, the colloid storage time is short, the coating is unstable. Therefore, the acid modification is generally used in the internal wall coating with less water resistance, and the products are mostly sodium glass and polyvinyl alcohol. Coating is a single group of packaging, coating performance index, paint storage, construction performance are all good.
Silicone modified polyurethane coating is a synthetic resin coating which is introduced into the main chain or side chain of the polyurethane molecule or si-c bond. Silicone coating has the advantages of good heat resistance, good weather resistance and good hydrophobicity.
Polyurethane coating has outstanding wearability, oil resistance and good weldability, but it is not ideal for heat resistance and water resistance. Therefore, the organic silicon modified polyurethane can synthesize the excellent properties of both, and make up the deficiency of polyurethane materials. As new materials are studied, the properties of silicone modified polyurethane materials will be more excellent to meet the needs of different industries and fields.
S.S.P athak et al. used sol-gel technology to prepare organic silicone urethane waterborne coatings for aluminum and aluminum alloys using organic silicon MTMS and GPTMS modified waterborne polyurethane. By Fourier transform infrared spectroscopy (FT IR), transmission electron microscope (TEM), atomic force microscope (AFM) and scanning electron microscope (SEM) had been used to characterize the structure and morphology of the coating.
The corrosion current change of the coating was analyzed through the dynamic potential polarization test. The heat resistance, water resistance and mechanical properties of the film were studied through DSC/TG, contact Angle and tensile test. Results show that the addition of organic silicon waterborne polyurethane coating enhances the corrosion resistance, flexibility and mechanical stress, the degradation of coating temperature increased to about 206 ℃, the increase of thermal stability improved. This organic silicon modified high-performance water-based polyurethane coating can be applied to aerospace, Marine, automobile and other fields.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine packing： net weight 200KG/ galvanized iron drum (a small cabinet pallet loaded 16 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).
Nano - particle modified water-based polyurethane anti-corrosion coatings. Nanoparticles have the different special volume effect and macro particles, surface (or interface) effect and macroscopic quantum tunneling effect, etc., will be used for the preparation of polymer-based nanocomposites can give some special properties, therefore, has aroused wide interest of scientific workers.
In the same way, it has a good effect on the anti-corrosion coatings of modified polyurethane. M. c. s aha [31] et al. used spherical nano-tio2, flaky nanoparticles, and rod - shaped nanofibers to modify polyurethane foam.
The experimental results show that, in all experiments, the thermodynamic performance and mechanical properties of the polymer can be greatly improved by adding only 1% of the mass fraction of the nanoparticles. Nanoparticles can also be used to improve the corrosion resistance of polyurethane.
Jui-mingyeh et al. used PCL, DMPA and H12MDI to synthesize water-based polyurethane emulsions, and then separated the nano-montmorillonite (Na + - MMT) with aqueous polyurethane
A series of WPU/Na + - MMT composite emulsion was prepared. Through gas permeameter (GPA), thermogravimetric analyzer (TG), differential scanning calorimetry (DSC) and uv-vis transmission spectra analysis test shows that adding Na + - MMT compared with not adding waterborne polyurethane, coating permeability is reduced, heat resistance, optical transparency reduced; The corrosion electrochemical behavior of coating in 5% NaCl solution was studied, and the results showed that compared with WPU coating without the addition of Na + MMT, the water-based polyurethane coating with 3 % Na + - MMT had superior anti-corrosion protection.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Nano - particle modified water-based polyurethane anti-corrosion coatings. Nanoparticles have the different special volume effect and macro particles, surface (or interface) effect and macroscopic quantum tunneling effect, etc., will be used for the preparation of polymer-based nanocomposites can give some special properties, therefore, has aroused wide interest of scientific workers.
In the same way, it has a good effect on the anti-corrosion coatings of modified polyurethane. M. c. s aha [31] et al. used spherical nano-tio2, flaky nanoparticles, and rod - shaped nanofibers to modify polyurethane foam.
The experimental results show that, in all experiments, the thermodynamic performance and mechanical properties of the polymer can be greatly improved by adding only 1% of the mass fraction of the nanoparticles. Nanoparticles can also be used to improve the corrosion resistance of polyurethane.
Jui-mingyeh et al. used PCL, DMPA and H12MDI to synthesize water-based polyurethane emulsions, and then separated the nano-montmorillonite (Na + - MMT) with aqueous polyurethane
A series of WPU/Na + - MMT composite emulsion was prepared. Through gas permeameter (GPA), thermogravimetric analyzer (TG), differential scanning calorimetry (DSC) and uv-vis transmission spectra analysis test shows that adding Na + - MMT compared with not adding waterborne polyurethane, coating permeability is reduced, heat resistance, optical transparency reduced; The corrosion electrochemical behavior of coating in 5% NaCl solution was studied, and the results showed that compared with WPU coating without the addition of Na + MMT, the water-based polyurethane coating with 3 % Na + - MMT had superior anti-corrosion protection.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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