K-380 is a white fluffy powder of high purity, with a specific surface area of 380 m²/gs
Item No :
28112200Order(MOQ) :
4.4 TonPayment :
T/T 100%Product Origin :
CHINAColor :
WHITEShipping Port :
SHANGHAI/NINGBO/QINGDAOLead Time :
30 DAYSWeight :
10KG/BAGK-380
Untreated Hydrophilic Amorphous Fumed Silica K-380 is a high-performance, ultra-fine white fluffy powder renowned for its exceptional purity and versatile applications. With a specific surface area of 380 m²/g, this advanced material exhibits outstanding physicochemical properties, making it an ideal choice for a wide range of industrial and specialty applications.
Key Features&Benefits
Enhanced Free Flow & Anti-Caking Performance – As a highly efficient free-flow agent, it prevents clumping and improves powder flowability in pharmaceuticals, food additives, and industrial powders, ensuring consistent processing and handling.
Mechanical Reinforcement – When incorporated into polymers, elastomers, or composites, K-380 significantly enhances tensile strength, abrasion resistance, and durability without compromising flexibility.
Excellent Transparency – Due to its ultra-fine particle size and amorphous structure, it maintains high clarity in transparent gels, coatings, and silicone products, making it ideal for optical and cosmetic applications.
Typical Properties of K-380
| UNIT | VALUE | |
| Specific Surface Area | m²/g | 380 ± 30 |
| pH in 4% dispersion | ~ | 3.7 – 4.7 |
| Drying Loss(2hr. at 105°C) | wt. % | ≤ 1.0 |
| Ignition Loss(2hr. at 1000°C) | wt. % | ≤ 2.0 |
| SiO2-content | wt. % | ≥ 99.8 |
| Bulk Density | g/l | 50 |
APPLICATION
Unsaturated Polyester Resin (UPR)
Acts as a thickening and anti-settling agent, preventing filler sedimentation in gel coats and composites.
Enhances mechanical strength and surface smoothness in fiberglass-reinforced plastics (FRP).
Improves viscosity stability during processing, ensuring uniform resin distribution in laminates and molded parts.
High-Consistency Rubber(HCR)-Silicone Rubber
Controls sag resistance while maintaining smooth application in vertical or overhead sealing.
Enhances thixotropic behavior, preventing slump before curing.
Improves adhesion and durability in construction, automotive, and industrial sealants.
Paints&Coating
Prevents pigment settling and syneresis in water- or solvent-based systems.
Enhances anti-sagging properties in thick-film coatings without affecting leveling.
Improves scratch resistance and weatherability in protective and decorative coatings
Pcking&Storage
K-380 is supplied in a paper bag of 10kg and a big bag of customized quantity. The paper bag consistsof multiple layers and contains PE coated layer between the papers.
K-380 is stable chemical and not degraded .If protected from moisture or chemicals, however,it is favorable to use the product within two years.
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