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During the water treatment process, foam generation will affect the treatment effect and equipment operation, so defoamers are needed to eliminate foam. Although traditional silicone defoamers have good defoaming effects, there are some environmental and process problems, such as not easy to degrade, high conductivity or vacuum abnormalities in some systems, etc. As a new type of defoamer, silicone-free water treatment defoamer has unique performance advantages and has gradually attracted widespread attention.   Silicon-free water treatment defoamers mainly achieve defoaming function by reducing the surface tension of the foam liquid film. When the defoamer is added to the system containing foam, it can quickly disperse on the foam surface, destroy the elastic film of the foam, and cause the foam to break and disappear.   During the wastewater treatment process of the printing and dyeing plant, the foam problem is serious due to the large amount of surfactants in the wastewater. After adding the silicone-free water treatment defoamer, the foam problem was effectively solved, the wastewater treatment effect was significantly improved, and the defoamer had no negative impact on the subsequent wastewater reuse and discharge treatment.   During the operation of the aeration tank of a domestic sewage treatment plant, a large amount of foam was generated due to excessive aeration volume and fluctuations in the concentration of organic matter in the influent, which affected the normal operation of sewage treatment. By using silicon-free water treatment defoamers, the generation of foam was successfully suppressed, ensuring the stable operation of the sewage treatment plant.   Silicon-free water treatment defoamers play an important role in water treatment. It can effectively eliminate foam, improve water treatment efficiency and quality, and meet environmental protection requirements. With the continuous advancement of science and technology and the increase in market demand, the performance of silicon-free water treatment defoamers will continue to improve, and the application field will continue to expand.    

The paper industry is undergoing significant transformations driven by technological innovation, environmental regulations, and evolving market demands. Simultaneously, defoamers, as critical chemical additives in papermaking, are expected to witness substantial advancements aligned with these industry shifts. This article explores the future trajectory of the paper industry and the corresponding opportunities and challenges for defoamers. 1. Future Trends in the Paper Industry 1.1 Green Transition and Sustainable Development The global push toward carbon neutrality is reshaping the paper industry. Companies are increasingly adopting renewable energy sources, such as biomass, to replace fossil fuels and enhancing wastepaper recycling rates to build a circular economy. Notably, non-wood fibers like bamboo pulp, straw, and bagasse are gaining traction as raw materials, reducing reliance on forest resources. However, these alternatives often introduce impurities during pulping, exacerbating foam formation. This trend underscores the need for eco-friendly chemicals, including biodegradable defoamers, to replace traditional volatile organic compound (VOC)-based products. 1.2 Digitalization and Smart Manufacturing Industry 4.0 technologies, including IoT sensors and AI-driven systems, are optimizing production efficiency. Real-time foam monitoring in pulp systems enables automated defoamer dosing, minimizing waste and improving precision. Smart manufacturing further drives demand for high-efficiency defoamers compatible with micro-dosing systems.     1.3 High-Value Functional Paper Products The rise of specialty papers—such as antimicrobial paper, e-label paper, and flexible packaging paper—requires stringent control over production environments. Defoamers must eliminate foam without compromising functional properties like conductivity or barrier performance. Additionally, high-speed paper machines demand defoamers with rapid foam suppression and long-lasting efficacy. 1.4 Regional Market Dynamics Regional disparities are emerging:   Mature markets (e.g., Europe, North America): Strict environmental regulations propel R&D in premium, eco-compliant defoamers.   Emerging markets(e.g., China, India): Surging demand for packaging and hygiene products fuels the need for cost-effective solutions.     2. Development Prospects for Defoamers 2.1 Dominance of Eco-Friendly Formulations Environmental compliance is reshaping defoamer innovation:   Bio-based defoamers: Derived from plant oils or modified silicone-polyether blends, these products offer biodegradability and lower carbon footprints.   Low-VOC/APEO-free solutions: Aligned with regulations like EU REACH and China’s dual carbon goals, such formulations mitigate health and ecological risks.   Water-based defoamers: Replacing solvent-based variants, they integrate seamlessly with eco-friendly coating systems.&nb...

The selection and requirements of defoamers involve many aspects. The following is a detailed analysis:                             1. Selection of defoamers   Select according to the foam system: Different types of foam systems (such as aqueous phase or non-aqueous phase) require different types of defoamers. For example, silicone defoamers are suitable for different types of foam systems such as non-ionic, anionic, and cationic, and can play an excellent defoaming effect in both non-aqueous and aqueous phase systems.   Select according to the treatment process: Different water treatment processes have different requirements for defoamers. For example, in biological water treatment, it is necessary to select defoamers that are harmless to microorganisms; in oil extraction and processing, it is necessary to select defoamers that can withstand high temperature, high pressure and strong corrosion.   Select according to cost-effectiveness: The cost of the defoamer is also one of the factors that need to be considered when selecting. Under the premise of ensuring the defoaming effect, a defoamer with high cost performance should be selected.   Select according to environmental protection requirements: With the increasingly stringent environmental protection regulations, it has become a trend to choose low-toxic, harmless, and biodegradable defoamers.         2. Requirements for defoamers   Strong defoaming ability: Defoamers should be able to effectively eliminate foam when used in very small amounts, which is an important indicator for measuring the performance of defoamers.   Low surface tension: Defoamers should have lower surface tension than the defoamed system so that they can better adsorb on the foam surface and reduce its stability.   Good chemical stability: Defoamers should have good chemical stability, not react with the defoamed medium, and not be decomposed and degraded by it.   Good heat resistance: Defoamers should be able to maintain their defoaming properties at high temperatures without losing their effectiveness.   Good diffusivity and permeability: Defoamers should have good diffusivity and permeability so that they can spread quickly in the foam medium and play a role.   Good gas solubility and permeability: Defoamers should have good gas solubility and permeability so that gases are not easy to gather and disappear from the foam.   High safety: The defoamer itself is preferably non-toxic or at least a low-toxic substance to ensure that it will not cause harm to the human body and the environment during the treatment process.   Good storage stability: The defoamer should have good storage stability so that it can maintain good defoaming performance after long-term storage.   Long-term defoaming effect: The defoamer should have a long-term defoaming effect to avoid failure in a...

Fine chemicals occupy a pivotal position in modern industry, covering many fields such as pharmaceuticals, coatings, papermaking, etc. However, in the production process of these fine chemicals, foam problems are often a headache. Fine chemical defoamers, as a chemical additive specifically for foam problems, play an irreplaceable role in the field of fine chemicals.                   In order to fully mix the raw materials in fine chemical production, stirring is a common operation. Strong stirring will draw a large amount of air into the liquid, increasing the gas-liquid contact area. For example, in paint production, when pigments, resins and solvents are stirred at high speed, air is drawn in to form foam.   Fine chemical defoamers can penetrate into the interior of the foam film and destroy the double-layer structure of the foam film. In this process, the defoamer molecules interact with the substances in the foam film to change the elasticity and stability of the film. Fine chemical defoamers have strong defoaming ability and can effectively eliminate foam at a lower concentration.   Fine chemical defoamers have good water solubility and are easy to disperse in aqueous systems. In addition, they have good chemical stability and can be used in a wide range of temperature and pH. In the alkaline cooking process of the paper industry, it can play a stable defoaming role.   To sum up, fine chemical defoamers play a vital role in various fine chemical fields. With the continuous development of the fine chemical industry, the requirements for the performance, safety and environmental protection of defoamers will continue to increase. By deeply understanding the mechanism of action of defoamers, fine chemical companies can better select and use defoamers, thereby improving production efficiency and product quality.  

Textile auxiliaries are a type of chemicals used in the textile process, which is used to improve the performance, appearance and quality of textiles during processing. Textile auxiliaries can be divided into many categories, including dyes, auxiliaries, finishing agents, etc.     During the textile process, some processing liquids (such as dyes, finishing agents, etc.) are prone to foam. The formation of foam is caused by the presence of surfactants in the processing liquid. Surfactants can reduce the surface tension of the liquid surface, allowing bubbles to exist stably in the liquid to form foam. Excessive foam will have a series of adverse effects on the textile process. 1. Affect the quality of textiles: Foam may combine with fibers during the textile process, resulting in uneven fiber surface, affecting the quality and appearance of the product. 2. Reduce production efficiency: The presence of foam will increase the viscosity of the processing liquid, making stirring and transportation difficult, thereby reducing production efficiency. 3. Pollute the environment: If the foam overflows the processing device, it will pollute the surrounding environment and may cause safety hazards.   As a textile auxiliary, defoamer has the following advantages: 1. Remove foam: Defoamer can quickly destroy the foam structure and reduce the stability of the foam, thereby effectively removing the foam. 2. Improve production efficiency: By removing foam, defoamer can reduce the viscosity of the liquid, making stirring and conveying smoother and improving production efficiency. 3. Improve product quality: Defoamer can prevent foam from combining with fibers, making the surface of textiles more uniform and improving product quality. 4. Environmentally friendly: Modern defoamers usually use environmentally friendly formulas and have little impact on the environment.   In the textile process, defoamer plays an important role as a kind of textile auxiliary. It can effectively remove foam, improve production efficiency and product quality. However, during the application process, it is also necessary to pay attention to the amount of defoamer used and appropriately select environmentally friendly products to achieve better results and environmental protection. The continuous development and innovation of textile auxiliaries will bring more opportunities and development space to the textile industry.

Limestone wet desulfurization is currently the most widely used in flue-gas desulfurization technology. However, during the limestone wet desulfurization process, foam problems often occur. During the circulation spraying process, limestone slurry is prone to foam due to mechanical effects such as stirring and gas involvement. Therefore, the emergence of limestone wet desulfurization defoamer can quickly solve the foam problem.     One of the main mechanisms of limestone wet desulfurization defoamer is to reduce the surface tension of the liquid. The defoamer molecules have a special structure that can spread quickly on the foam surface. When the defoamer molecules spread on the foam surface, they will replace the original surfactant on the foam surface, reducing the local surface tension of the foam.   In addition to being able to quickly eliminate existing foam, limestone wet desulfurization defoamer also can control foam regeneration. It can prevent air from entering the slurry again to form new foam, and it can also prevent the surfactant in the slurry from triggering the generation of foam again, thereby maintaining the stable operation of the desulfurization system.   The limestone wet desulfurization defoamer must be compatible with various components in the system, such as limestone slurry, additives, etc. If the compatibility is not good, it may cause the slurry properties to change, affect the desulfurization effect, and even damage the desulfurization equipment.   Limestone wet desulfurization defoamer plays a vital role in solving the foam problem in the limestone wet desulfurization process. Correctly selecting and using the right defoamer can not only improve the desulfurization efficiency and ensure the stable operation of the desulfurization system, but also meet environmental protection requirements and promote the entire desulfurization industry to develop in a more efficient and environmentally friendly direction.