Product Details
CasNo： 64742-46-7
Appearance： liquid
Delivery Time： 15 days
Packing： 25kg/drum
Purity： 99%
1. Basic Information
- Brand and Model: BYK - 320, produced by BYK - Chemie, Germany. The brand has world - leading technological R & D capabilities in the field of coating additives and focuses on providing efficient solutions for solvent - based and water - based coating systems.
- Packaging Specifications: 20 kg/blue iron drum and 160 kg/blue iron drum, meeting the different needs of small - batch laboratory testing and large - scale industrial production. The packaging design is convenient for transportation and storage.
- Composition: Polyether - modified polymethylalkylsiloxane (silicon - containing surface additive). Through the special modification of polyether segments and siloxane molecules, it combines the advantages of low surface tension and system compatibility.
2. Core Performance
- Efficiently Reduce Surface Tension: It significantly reduces the surface tension of solvent - based coating systems, promotes the uniform spreading of coatings on substrates such as metals, woods, and plastics, and effectively prevents phenomena such as "crawling" (shrinkage at the coating edge) and "telegraphing" (corrugated defects on the wet film surface). For example, in metal anti - corrosion coatings, it can ensure that the paint film covers the substrate smoothly.
- Slightly Improve Surface Smoothness: It endows the coating with a moderate smooth touch, reduces the friction coefficient, and does not affect the recoat adhesion of the coating. It is suitable for scenarios with basic requirements for surface texture (such as ordinary industrial paints).
- Dual Functions of Defoaming and Leveling: As the activity of the additive increases, the defoaming effect is improved simultaneously. It can effectively eliminate bubbles introduced during coating production and construction, reduce pinhole defects; at the same time, it optimizes the leveling property of the wet film and improves the surface flatness after film formation.
- Applicability to Water - Based Systems: Through special modification technology, it can be applied to water - based coating systems, balance the leveling problems caused by the high surface tension of water - based systems, improve brush marks and roller marks, and is suitable for scenarios such as water - based wood coatings and architectural coatings.
3. Application Fields
- Solvent - Based Coatings:
- Metal anti - corrosion coatings, engineering machinery coatings: Solve the problem of substrate wetting and prevent crawling defects;
- Wood coatings, industrial decorative coatings: Optimize surface smoothness and leveling effect, and improve appearance quality.
- Water - Based Coatings:
- Water - based architectural coatings, water - based wood coatings: Improve leveling property and reduce construction defects;
- Water - based industrial coatings: Assist in defoaming and improve paint film flatness.
4. Usage Method and Dosage
- Adding Stage: In solvent - based systems, it is recommended to add during the paint mixing stage; in water - based systems, it can be added during the grinding or paint mixing stage, and added slowly under low - speed stirring to ensure uniform dispersion.
- Recommended Dosage:
- Solvent - based coatings: 0.1% - 0.5% of the total formula amount. For systems with serious crawling, it can be increased to 0.5%;
- Water - based coatings: 0.05% - 0.3% of the total formula amount, which needs to be adjusted according to the resin type and construction process (such as the spraying process can appropriately reduce the dosage).
5. Precautions
- Compatibility Test: Although suitable for most solvent - based and water - based systems, in formulas containing strongly polar solvents (such as alcohols) or special resins (such as amino resins), a compatibility test must be carried out in advance to avoid turbidity or craters.
- Storage Conditions: Store in a cool and dry place (5 - 30°C), avoid direct sunlight and high - temperature environments. The shelf life of unopened packages is 24 months.
- Safety Protection: Wear protective gloves during operation to avoid direct contact with the skin; if it accidentally gets into the eyes, rinse immediately with plenty of water and seek medical attention.
