[Industry News] On modern high-speed paper machines, foam control following the sizing process remains a silent productivity killer, often compromising sheet formation and runnability. Conventional silicone defoamers frequently suffer from poor dispersion, screen blinding, and oil bleeding after sizing, leading to irreversible defects such as oil spots and silicone speckles on finished paper. As the industry pushes for "zero-defect quality, higher machine speeds, and reduced sheet breaks," there is an escalating demand for specialized defoamers capable of withstanding high shear, high electrolyte loads, and fabric cleanliness.

Addressing this specific bottleneck in the sizing section, Anhui IOTA Silicone Oil Co., Ltd. (IOTA) officially launched the papermaking defoamer IOTA 1832. Based on a polyether-modified polysiloxane architecture, the product leverages molecular-level hydrophilic-lipophilic balance design to neutralize stubborn foam generated by altered surface tensions post-sizing. The core technological advantage of IOTA 1832 resides in its polyether-silicone synergistic effect. Unlike standard silicone emulsions, the modified structure provides exceptional water solubility and dispersibility, allowing rapid spreading and penetration of foam lamellas within the pulp suspension. Critically, it demonstrates outstanding anti-blinding properties on high-speed forming fabrics, mitigating the risks of fabric plugging and sheet breaks caused by defoamer accumulation. Furthermore, the product exhibits remarkable chemical stability, maintaining a neutral pH of 7±1, ensuring full compatibility with sizing agents, strength additives, and retention/drainage aids without adverse interactions. Performance data indicates that IOTA 1832 presents as a white micro-emulsion with excellent centrifugal stability (3000 rpm for 15 minutes with no stratification), guaranteeing homogeneity during storage and transfer. Despite a low recommended dosage of only 0.01%-0.2% based on pulp slurry, it delivers efficient foam knockdown and persistence. Application protocols typically involve addition prior to sizing agents or post-dilution (1:1 to 1:3) for continuous drip-feeding, offering operational flexibility. Already widely adopted across pulping, washing, and papermaking circuits, IOTA 1832 significantly reduces surface defects and elevates final paper quality. Industry experts note that amid the "plastic-to-paper" transition and capacity optimization trends, the sophistication of chemical auxiliaries dictates market competitiveness. The launch of IOTA 1832 not only fills a domestic gap in high-end papermaking defoamers but also provides robust technical support for mills aiming to increase machine speeds and reduce energy consumption through its "no-blinding, spot-free" performance. This milestone underscores the growing capability of domestic papermaking additives to rival international brands in solving specific process challenges.