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What characteristics do silicone-based defoamers possess?
Release Date:
2020-12-17
In general, polyether‑silicone defoamers are synthesized from a variety of different starter compounds. These starter compounds serve as the basis for classifying polyether‑silicone defoamers; accordingly, they can be categorized into polyol‑type, fatty acid ester‑type, and amine‑ether‑type defoamers, each with its own distinct characteristics. Among these, the polyol‑type and fatty acid ester‑type are the most widely used today and have long played an important role across numerous industries.
In general, polyether‑silicone defoamers are synthesized from a variety of different starter compounds. Silicone defoamer Moreover, these initial agents can serve as a basis for classifying polyether‑silicone defoamers. On this basis, such defoamers are categorized into polyol‑type, fatty acid ester‑type, and amine‑ether‑type; each of these types exhibits distinct characteristics. Among them, the polyol‑type and fatty acid ester‑type are the most widely used today, playing a crucial role across numerous manufacturing industries.
Silicone defoamer Its compositional management decisions endow it with the following characteristics:
(1) In terms of chemical structure, it differs from other organosilicon defoamers; its non‑specific functional groups are similar and achiral, and it does not form associative interactions with water or with compounds containing hydrocarbon groups or chiral functional groups.
(2) It exhibits superior demulsification performance compared to other silicone‑based defoamers; typically, only 1 × 10⁻⁶ to 75 × 10⁻⁶ of the system’s molar mass needs to be added to achieve excellent demulsification results.
(3) In terms of physical properties, it exhibits ductility like typical compounds and does not readily undergo exothermic reactions with foaming agents.
(4) Organic silicon defoamers exhibit excellent thermal stability and outstanding resistance to both high and low temperatures. The viscosity of methyl silicone oil begins to rise gradually only at around 200°C, and the siloxane bonds remain intact without decomposing.
(5) Methyl silicone oil exhibits excellent flexibility and wettability; therefore, organosilicone defoamers are conducive to enhancing the quality of coated paper.
(6) Silicone-based defoamers are safe, environmentally friendly to produce, and biocompatible, making them cutting-edge, smart manufacturing compounds that align with current trends.
(7) Silicone-based defoamers exhibit excellent anti‑aging properties and process performance, enabling their high efficiency to be fully realized under all environmental conditions.
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