Compared with other defoamer products under Guoli Chemical, the core competitiveness of Defoamer King FAG470 stems from its "polyether-modified polysiloxane" molecular structure. Conventional polyether defoamers (such as GP-330) mainly rely on the cloud point effect of polyether segments to achieve defoaming. They perform well in normal-temperature neutral systems but tend to lose activity under high temperature or strong alkaline conditions. Polyether ester defoamers (such as papermaking defoamer XS-02) are more specifically designed for certain industries, with a relatively narrow application range. In contrast, FAG470 chemically combines silicone segments with polyether segments, possessing both the fast bubble-breaking speed of silicone defoamers and the good dispersibility of polyether defoamers, while remedying the defects of pure silicone defoamers that are prone to silicone spots and poor compatibility.
From the mechanism of defoaming and foam inhibition, the polyether-modified polysiloxane molecules of FAG470 have extremely low surface tension. They can quickly enter the foam liquid film and spread, causing the foam to burst instantly (rapid bubble breaking). At the same time, the residual molecules continuously inhibit foam regeneration in the system (long-term foam inhibition). This "dual effect" is difficult for ordinary polyether defoamers to achieve solely through the cloud point precipitation mechanism. Additionally, FAG470 is provided in the form of an aqueous emulsion, with dispersion in water far superior to traditional silicone oil defoamers, allowing direct use without pre-emulsification or the aid of organic solvents.
| Performance Dimension | Defoamer King FAG470 | Polyether Defoamer GP-330 | Papermaking Defoamer XS-02 |
|---|---|---|---|
| Chemical Type | Polyether-modified polysiloxane | C12-14 fatty alcohol polyether | Polyoxyethylene monooleate |
| Appearance | Milky white emulsion | Colorless to slightly yellow transparent liquid | Milky white to light yellow |
| High Temperature Resistance | Excellent (chemical structure stable at high temperatures) | General (limited by cloud point temperature) | General |
| Strong Alkali Resistance | Excellent (not prone to demulsification or failure) | General | No data |
| Defoaming Speed | Rapid bubble breaking | Moderate | Moderate |
| Foam Inhibition Persistence | Long-term foam inhibition | Limited | Limited |
| Aqueous Dispersibility | Excellent (instant dispersion) | Good | Good |
| Application Breadth | 7 major industries (water treatment, coatings, textiles, cleaning, metalworking, petrochemicals, papermaking) | General-purpose defoaming | Mainly targeted at papermaking industry |
| Environmental Safety | Non-dangerous goods, GHS no hazard classification, no acute toxicity, no skin irritation | No detailed safety data | No detailed safety data |
Defoamer King FAG470 is especially suitable for working conditions with stringent requirements for defoamers. In the textile printing and dyeing industry's high-temperature alkaline scouring and bleaching baths, polyether defoamers like GP-330 may lose activity after exceeding their cloud point, while FAG470 can continuously function due to the stability of its polysiloxane segments. In systems requiring long-term recirculation, such as industrial cleaning and metalworking fluids, the long-term foam inhibition ability of FAG470 can significantly reduce the frequency of re-dosing, lowering overall usage costs. In paint and ink manufacturing, its non-ionic nature ensures no adverse reactions with various resins, pigments, and fillers, preventing defects such as craters or haze. If the application scenario is only conventional normal-temperature aqueous systems with short-term defoaming needs, the more cost-effective polyether defoamer GP-330 could be considered; if specifically for papermaking processes, defoamer XS-02 is also a targeted choice.