The selection and use of defoamers in the paper market are directly related to paper quality and production efficiency. The defoamers in the paper market are mainly divided into organosilicon, mineral oils, polyethers, and other types. Different types of defoamers have different properties and applicable ranges.

Organosilicon defoamers have excellent defoaming and anti foaming properties, and are suitable for harsh environments such as high temperature, high pressure, and strong acidity and alkalinity.

Mineral oil defoamers have lower prices, but their defoaming speed and foam suppression performance are relatively weak, making them suitable for situations where defoaming requirements are not high.

Polyether defoamers have good dispersibility and compatibility, and are suitable for aqueous systems.

Different papermaking processes have varying performance requirements for defoamers. For example, high-speed paper machines require defoamers with fast defoaming and long-lasting defoaming properties; Coated paper requires defoamers that do not affect the coating effect and printing performance.

With the increasingly strict environmental regulations, choosing environmentally friendly defoamers has become an inevitable trend. Enterprises should prioritize the use of renewable resources and environmentally friendly raw materials to produce defoamers. On the premise of ensuring performance, enterprises should choose cost-effective defoamers to reduce production costs.

The amount of defoamer added should be adjusted according to the papermaking process and pulp properties. Excessive addition may lead to a decrease in paper quality or an increase in production costs; Insufficient addition may not achieve the expected defoaming effect. Defoamers should be evenly dispersed in the pulp to ensure their full defoaming effect. Uniform dispersion of defoamers can be achieved through stirring, spraying, and other methods. Enterprises should regularly test the performance of defoamers to ensure that they meet production requirements. At the same time, the type and amount of defoamer should be adjusted in a timely manner based on the test results.

In summary, the selection and use of defoamers in the paper market are of great significance for improving paper quality and production efficiency. Enterprises should comprehensively consider factors such as papermaking technology, environmental requirements, and cost-effectiveness, choose suitable defoamers, and master the correct usage techniques.