What are the factors that affect the performance of structured packing

Structured packing what factors will affect its performance, today Fangxing petrochemical mainly through the following two aspects to analyze, we look together.

1. Water content of the structured packing

Under normal circumstances, the structured packing with polar chemical bond layout is very simple to absorb water in the air, which is when the air humidity is high. Like carbon black, at high humidity, water content can even reach 20%. The existence of water in regular guessing has a great influence on its lax stability.

We often found that when air is moist, originally very simple or structured packing, its fineness in besmear guess is difficult to meet demand, even after grinding fineness reach requirements, usually appears slightly by placing the back, in fact during the paint when adding solvent, resin that has been returned to rough surface, the fundamental reasons of the appearance is structured packing appearance of adsorption of water too much, Unraveling the adsorption process, not only to the structured packing appearance and mutual effect between resin and structured packing was weakened, at the moment, the paint manufacturers choose add disintegrating agent or make up for the disposal of the polar solvent, but fill polar solvent on sensitive to water such as polyurethane coating is a kind of taboo, and disintegrating agent to add also means coating manufacturing capital rising, These measures have limitations in the process of coating production.

Therefore, it is necessary to reduce the water content of the appearance of the structured packing, from the appearance modification of the structured packing, powder packaging and other aspects of thinking, hate water disposal of the structured packing appearance of water adsorption is weak, and the density of the powder packaging can also change the amount of water adsorption.

2, the acid and alkali of the structured packing

Coating resin is more acidic, less alkaline resin (except water-based resin). Therefore, the acidity and alkalinity of the regular fillers directly affect the processing, storage stability and even the physical and chemical functions of the coating after film formation, but the alkaline regular fillers have some influence on the gloss of the coating after the reaction with acid resin. Because of the acid-base reaction, the viscosity of the coating is usually significantly added to the trend, some structured fillers in slightly stronger acidic resin system due to the viscosity added too large and restricted use, such as ZnO, zinc yellow, etc.. However, the function of the film after acid and alkali reaction also has significant changes, mostly reflected in toughness, solvent resistance, and even light and heat stability. But the existence of alkaline structured filler is beneficial to the corrosion protection of steel and other metals.

These knowledge about structured packing is so, I hope to help you. For more information call 0799-6841308