In the paper industry, foam is a problem that cannot be ignored. It not only affects the quality, uniformity, and production efficiency of paper, but may also cause damage to papermaking equipment and increase maintenance costs. Papermaking defoamers, as key additives to solve this problem, are playing an increasingly important role.

In the process of papermaking, it is easy to produce a large number of foam due to factors such as surfactant, additives and mechanical agitation in the pulp. These foam will interfere with the fluidity and uniformity of the pulp, resulting in paper defects such as spots and holes. By destroying the stability of foam, defoamers can quickly eliminate or inhibit the production of foam, thus ensuring the smooth progress of the papermaking process.

Paper defoamers can be classified into organic silicon type, non silicon type, and bio based type according to their chemical composition. Different types of defoamers have different performance characteristics and are suitable for different papermaking processes and product requirements. For example, organic silicon defoamers have excellent high temperature resistance and acid alkali resistance, making them suitable for papermaking processes such as high-temperature steaming and acid alkali treatment; And bio based defoamers are more environmentally friendly, suitable for the production of high-end paper and specialty paper with high environmental requirements.

With the increasing awareness of environmental protection, the greening of papermaking defoamers has become an inevitable trend in the industry's development. Green defoamers require low toxicity, low volatility, biodegradability, and minimal environmental impact during production and use. At present, many companies are committed to developing bio based defoamers using natural plant extracts, microbial metabolites, and other raw materials to achieve the green transformation of the paper industry.

With the rapid development of the paper industry and increasingly strict environmental regulations, the application prospects of paper defoamers are broad. However, how to reduce production costs, improve product stability and environmental performance while ensuring defoaming effect remains the main challenge currently faced. In addition, developing more specialized and efficient defoamers for different papermaking processes and product requirements is also an important direction for our future development.