Coil coating crosslinking agent

Coil coating crosslinking agent

When it comes to paper coating, if not for industry, it may be a strange word. Coil coatings in paint industry, although not as familiar as architectural paint, furniture paint, famous, but also is a kind of social development is indispensable industrial coatings.

Coil coatings by makings, crosslinking agent, fillers, additives and volatile grouped into, can be divided according to the use, primer, paint and paint, is used in the coated steel plate, aluminum plate surface, made after precoated coil using a professional paint.

Compared with other coatings, coil coatings in addition to having the general coating of anticorrosion, decorative performance, but also has good elasticity and other special performance, widely used in construction, automobile manufacturing, electronics manufacturing and other industries, etc.

At present, color coating steel plate has good application prospect, home appliance with color plate has become the development direction of the industry, its application will be more and more common, which lead to the development of coil coatings industry.

The market calls low VOC coating product. Coil coating as a kind of low VOC products, with excellent anticorrosion and weather resistance, durability and other features, applications in areas such as household appliances, decoration, building will gradually increase. At the same time, the quickening pace of "oil change" will also make asia-pacific users more and more interested in water-based polyester coatings.

Moreover, in our country, the application of coil coating in automobile manufacturing is very prominent, China is the world's first auto production country, the production volume of car is steadily rising. Compared with the radiation curing coating, the easy construction characteristics of the paper coating are further expanded.

The coil coating market is broad, the foreground is bright. Future, coil coating will be to develop in the direction of environmentally friendly, no chrome pigments, including lead-free paint, high solid coatings, waterborne coatings, powder coatings, low temperature curing coatings, uv-curable coatings, etc. In addition to the applications of buildings, home appliances and automobile manufacturing, the paper coating will be more and more common in other applications.




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).


For storage stability, based on the experience of latex paint, the alkali is thickened by the water phase of the system, and HEUR is the thickening of the more hydrophobic particles. If use a type of rheological additives, difficult to achieve long-term satisfaction of storage stability (not impossible), of course, if a spell with you can get the best effect, these are all we want to choose HEUR kind rheological additives, one of the reasons is given HEUR class rheological additives has these advantages, if effective use strong shape HEUR to fake, can get the best effect.

Moreover also wants to borrow the association type HEUR association strongly affected by the hydrophilic surfactant characteristics to design similar to the ASE rheological curve, add fast volatilization of hydrophobic film forming additives (EEP), association effect, at the same time due to the hydrophilic, slow evaporation rate in the existence of film-forming agent, after the basic volatile hydrophobic film forming additive, hydrophilic film forming additive concentration in the coating, lower association effect, thus reducing viscosity.

But the current result is that the use of a waxed thickener with the ASE can be relatively simple to obtain a satisfactory surface effect. Strong shape HEUR to false should have obtained better results, but now found that EEP on emulsion swelling effect is very good, more experiments are needed to obtain an ideal film forming additive combination the best addition amount.

Choice of PH regulator. PH influence on coating, can find a lot of paper, or can refer to Angus introduction to AMP - 95, various types of amine can be used as a PH regulator, but choose the PH regulator is mainly from two aspects to consider: system principal component reactivity; Volatile speed.

The flow of water-based coating is a problem. The solvent system can be promoted by the difference of surface tension and low viscosity. By selecting suitable solvents, solvent evaporation will lead to the change of surface tension, so the peaks and troughs of solvent evaporation differences will lead to the difference of surface tension, prompting system flow.

Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd 

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