News Details
Zinc rich paint used crosslinking agent
2017-7-2 23:49:36
Zinc rich paint used crosslinking agent
Li zengliang, etc for environmental protection system and anticorrosion performance of zinc coating, the epoxy resin are introduced to modified waterborne polyurethane, with waterborne epoxy polyurethane materials for preparation of zinc coating, based on the corrosion potential and electrochemical impedance spectroscopy (EIS) test and analysis, adding different content of zinc powder zinc-rich coating was studied in 3% NaCl solution in the corrosion electrochemical behavior, and add a small amount of aluminium powder of zinc-rich coatings and traditional zinc-rich coatings are compared.
The results showed that the anti-corrosion ability of the water-based epoxy polyurethane coating was stronger than that of traditional epoxy zinc rich primer. The addition of zinc powder has a certain effect on the anti-corrosion effect of the coating. Adding a small amount of aluminum powder can improve the corrosion resistance of the coating. The water-based epoxy polyurethane coating has excellent corrosion resistance, high mechanical strength, small environmental pollution, convenient construction and wide application prospect in steel and steel.
In epoxy zinc-rich primer, epoxy micaceous iron oxide coating, chlorinated rubber paint, chlorinated rubber paint and high chloride. Polyethylene primer, high chlorinated polyethylene industrial anti-corrosion coatings, such as paint formula, equipment and complete sets of production process.
Synthetic technology of waterborne polyurethane leather finishing agent. Waterborne polyester, waterborne polyurethane, water-based ammonia ester oil, water-based acrylic acid, water-based alkyd coating resin synthesis technology.
Water-based polyester (or water-based acrylic acid) amino baking formula, production process. Room temperature drying polyester, pure polyurethane type two-component waterborne polyurethane wood paint formula, production process. A single group of waterborne polyurethane, water-based ammonia ester oil, water - based alcohol - dry paint formulation, production process.
At room temperature drying self-crosslinking - shell - type waterborne polyurethane - acrylic resin hybridized synthesis technology. Water-based epoxy and water-based epoxy ester resin synthesis technology.
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
Sun daxing et al., et al., et al. E - 44 and silicone polyurethane resins were grafted with water - based polyurethane modified epoxy acrylic resin WPUEP. The influence of the amount of epoxy resin on the mechanical properties of coating was studied, and the influence of different anticorrosive pigments and their dosage and different base materials on anticorrosive properties of coatings was discussed.
The results show that the comprehensive performance of epoxy resin is optimal when the quality fraction of the resin is 30%. Compared to traditional iron oxide red and lead chromate antirust pigment, titanium iron powder and zinc phosphate non-toxic antirust pigment environmental anticorrosive coating has good anti-rust effect, and selects the best titanium iron powder anticorrosive effect, use at least, the dosage of 5% can make the anticorrosion performance and mechanical performance of the anticorrosive coatings at optimal levels.
Epoxy acrylic acid - modified water-based polyurethane anticorrosive paint. Acrylic resin has good water resistance and weatherability. Use of waterborne polyurethane modified acrylic resin, can make the polyamine vinegar with high abrasion resistance and good mechanical properties and acrylic good weathering resistance and water resistance of both organically, so that the polyurethane emulsion coating performance is obviously improved. The combination of epoxy acrylic and water-based polyurethane can be combined with the advantages of high performance water-based polyurethane coating.
Wu school together with toluene diisocyanate (TDI - 80), polyether glycol (N220), epoxy resin (E20) and methyl methacrylate (MMA) as raw materials, such as by in situ polymerization, the preparation of waterborne polyurethane, epoxy resin, acrylic acid (WPUEA) composite dispersion.
By emulsion stability, film hardness and tensile strength and the coating of acid and alkali, solvent resistance, such as test, study the system total mole ratio of NCO/OH and TMP, E20, dosage of DMPA and MMA on WPUEA dispersion and film properties.
The experimental results show that when the NCO/OH mole ratio of 1.2 to 1.2, TMP dosage is 2% - 3%, E20 dosage is 4% - 6%, DMPA dosage is 6% - 9%, MMA dosage is 20% - 30%, the shelf life of dispersion more than 10 months, freezing and thawing cycle is more than 5, the coating hardness is greater than 0.70, the tensile strength is greater than 10 mpa, water resistance, acid and alkali, solvent resistance and so on the waterborne polyurethane (WPU) have improved significantly.
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