Crosslinking agent at room temperature crosslinking paint

Crosslinking agent at room temperature crosslinking paint

The presence of carboxyl and hydroxyl in the anionic aqueous emulsion provides the possibility of further crosslinking. With 3 class (hydrophilic modified isocyanate, n propyl organism more compounds and epoxy compound) four types of crosslinking agent at room temperature cross-linking water-borne coatings, compared before and after crosslinking and crosslinking agent crosslinked coating performance.

The results showed that epoxy crosslinking agent crosslinked film comprehensive performance is best, especially water resistance, adhesion, solvent resistance and hot resistance, stain resistance and the applicable period after match paint has excellent performance; The coating performance of azepam crosslinking is second; The membrane performance of hydrophilic modified polyisocyanate crosslinking is relatively poor, which may be related to the microcosmic inhomogeneity of polyisocyanate crosslinking agent with the main paint.

In conclusion, the use of crosslinking agent has a certain effect on improving the performance of the coating, and no matter which crosslinking is better than the non-crosslinked coating performance.

Waterborne, high solids, solvent-free and powder anticorrosive coatings with no pollution or public hazards. Water-based anticorrosive coating inorganic zinc coating is an important variety of waterborne anticorrosive coatings, which is mainly used as primer and has excellent anticorrosive properties.

Waterborne anticorrosion coating in recent years also appeared on rust emulsion composite antirust paint, water-based rust belt type anti-rust paint, water-based underside oneness with rust rust composite coating, such as steel substrate for incomplete descaling, can even underwater construction, these coatings with proper water or high solid coatings, can form the protective system is very durable.

With core-shell structure, the emulsion polymerization of emulsion manufacturing technology, developed a nanoscale aqueous acrylic modified alkyd latex, nano-scale water-based amino acrylic modified alkyd emulsion, waterborne epoxy acrylic amino micro latex as well as by the preparation of waterborne anticorrosion coating series latex, already used in petroleum chemical industry, metallurgy, wujinjiaodian, automobiles, locomotives, freight, shipping areas such as anti-corrosion.




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


Powder coating powder coating is a kind of province energy, province resource, low pollution paint, its utilization rate is 95 ~ 99%, in recent years the development is very fast. Epoxy powder coatings are commonly used in anticorrosive engineering. Epoxy powder coating is a new kind of coating which is completely free of solvent and powder form and melts into film. The existing problems are the resistance to impact and moisture absorption to improve and improve. Epoxy powder coating is the preferred anticorrosive coating for new pipeline corrosion protection.

The water-based coating is more dependent on the construction environment, and how to ensure the good performance of the coating in the high humidity, low temperature and closed environment is the problem of the future.

Organic silicon modified polyurethane and organic fluorine modified polyurethane coatings and fluorine resin coatings are another important aspect of the development of anticorrosive coatings. The trend is to increase the demand for longer-lived antiseptic coatings, requiring 10 or more years of use and very harsh corrosive environment.

Antifouling coating's anti-fouling life is over 5 years. Multi-function anti-corrosion coatings will be developed rapidly, such as solar energy shielding corrosion protection coatings, damping, weather resistance, corrosion resistance of polyurethane paint, anti-corrosion coatings can peel sexual conducting electrostatic anticorrosion coating, flame retardant and heat-resistant anti-corrosion coatings, etc.

Passivation or corrosion resistant coatings generally use the development of anti-corrosion coatings containing chromium, lead and other heavy metals. Nanoscale TiO2 and ZnO nanoparticles such as, CaCO3 and SiO2 used in anticorrosive coatings have excellent synergy, due to the surface of the nanoparticles is very high, easy to combine with other atoms, increase the density of the coating and ion permeability resistance. In addition, it can improve the rheological properties of coatings, improve adhesion of coatings, coating hardness, smooth finish and anti-aging properties, which is one of the important development directions.


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Diethyl toluene diamine(DETDA)  http://www.yaruichem.com