Product details
During pulping cooking processing need add alkaline,after alkaline's chemical reaction with pulp raw materials such as the wood, wheat-straw, anionic surfactant will be created in the pulp black water ,and that will lead to foam foramtion, The foams will lead to circular holes or pin holes on paper. It also results in reduced dewatering rates and deposit problems from foam buildup. Overflow of foam in paper manufacturing stock from tanks can result in the loss of solid material.
According to different raw materials ,need use different kinds of defoamers,for wood material normally use Silicone antifoam agent,for straw pulp need non silicone defoamer, higher dosage but no silica residual.
is a kind of emulsion type modified silicone antifoam agent, it is composed of polysiloxane, modified polysiloxane, silica, dispersing agent and stabilizing agent It can be used in paper pulp production to prevent the foam problem in the production process. It also applied to Industrial Sewage (water treatment), Oil Drilling and Fracturing Fluid etc.
a kind of silicone base defoamerIt offer quick bubble break performance, excellent persistency. It shows excellent defoaming performance through a wide temperature range (25°C-100°C) and stable effects in strong alkaline (pH 10.0-12.0) condition, good foam control performance can be achieved by small dosage.
http://www.gs-defoamer.com/
