Fumed silica, or pyrogenic silica, colloidal silicon dioxide, is amorphous white inorganic powder which has high specific surface area,
nano-scale primary particle size and a relatively high (among silica products) concentration of surface silanol groups.
The properties of fumed silica can be chemically modified by reaction with these silanol groups.
Hubei Huifu manufactures both hydrophilic fumed silica and hydrophobic fumed silica. Our trade mark is HIFULL.
Commercial available fumed silica can be divided into two groups: hydrophilic fumed silica and hydrophobic fumed silica.
Because of the above-mentioned features, it is widely used as an important ingredient in many industries such as silicone rubber, paint and plastics industries…
HYDROPHILIC Fumed Silica VS HYDROPHOBIC Fumed Silica | ||
It’s nano amorphous silica with high purity, it canbe dispersed in water | Identification | Reactive silane-treated silica based on hydrophilic products. It’s hydrophobic, cannot be dispersed in water |
Acidic | PH | Weak acid, neutral |
Aqueous phase products | Applicable System | Oil phase products |
HL-150 ,HL-200, HL-300, HL-380, |
Product Grade | PDMS-Treated: HB-139 |
Can be wetted and dispersed in water |
Product FEATURES | Low hygroscopicity, good dispersibility, rheological adjustment for polar system products; little effect on viscosity even at high dosage in liquid phase products |
Reinforcement for silicone elastomers, thickening for non-polar liquids, flow aid for food & industrial powders, insulation properties even at high temperature
|
FUNCTIONS & APPLICATIONS | Thickening for polar liquids; rheology control during processing procedures; reinforcement of silicone elastomers; Good hydrophobicity to improve corrosion resistance; improvement of dielectric properties; powder flow aid; Improve scratch resistance |
Main Functions of HIFULL Fumed
Silica
01 Reinforcement
Improve physical strength, tensile strength & tearing resistance
02 Thickening
Increase viscosity in liquid system products
03 Thixotropic Agent
Optimum rheology control performance & thixotropic performance in liquid system products
04 Anti-settling Agent
Good suspending agent in liquid system products due to its sag & settling resistance
05 Anti-caking Agent
Improve free flowing performance of powders, avoid clumped issues
| APPLICATIONS OF HIFULL FUMED SILICA | ||
| Applications | Functions | Grade Suggestion |
| Paint & Coatings | Prevent sedimentation and delamination of pigments, improve the weathering and scratch resistance of coatings, and improve the bonding strength between coatings and substrates. | |
| Resin | Improve its thixotropic features, enables good tensile strength, bending resistance, water resistance, heat resistance,flowing ability. in putty, fumed silica shows great anti-settling thixotropic performance. In poly-putty base, used as thickening agent & anti-settling agent. | |
| Silicone Rubber | Fumed silica is perfect reinforce agent for silicone rubber. Adding fumed silica, its tensile strength and tear resistance will be greatly improved | |
| Adhesives & Sealants | Fumed silica has good properties in thixotropy, viscosity & sag resistance | |
| Plastics | Fumed silica improves physical strength of plastics; makes the film easy to open, prevents agglomeration & sagging, helps in flowing, thickening and thixotropic performance. | HL-200, HB-151 |
| Construction Materials | Improve performance in thickening, thixotropic ability, flowing ability, reinforcement, scratch-resistance and anti-cracking ability. | HL-200, HB-132 |
| Fertilizer | In powder fertilizer, fumed silica adsorbs moisture as anti-caking agent; In fluid fertilizer, as suspending agen | HL-150 , |
| Cosmestics |
Stable three dimensional net structure of fumed silica avoids pigment settling, and excellent dispersion properties ensures uniform distribution of color; Fumed silica has good UV-reflect performance, it’s widely used in sunscreen cream | |
| Thermal Insulation Material | The heat conductivity of fumed silica is 0.022-0.028W/m, enables good thermal insulation. | |
| Pharmaceutical | When added into pharmaceuticals, fumed silica acts as anticaking agent, drug carrier and excipient to prolong drug effect. | |
| Food | In food powders, fumed silica used as dispersing agent, flowing agent, anti-caking agent & desiccant. | HL-200, HL-380 |
Why Choose HIFULL fumed silica?
ü Strong Manufacturer
Leading fumed silica manufacturer in China with 20+ years expertise, 12,000 tons annual capacity 
ü Registration & Certificates
REACH, SGS, DMF-registered,
ISO9001, HALAL, KOSHER, TUV Rheinland Verified
ü Manufacturer Direct Supply
10+ grades of hydrophilic & hydrophobic fumed silica supplied, good quality, competitive price
ü International Standard
Leading setting body of ISO 23157：2021
Leading setting body of ISO18473-3-2018
Member of the setting body of ISO18473-1-2015
ü Technology Expertise
50+ technology patents, CANS approved analysis & testing center
ü Customer Service
Professional sales team and tech service team, help solve your problem
ü Free Sample
All grades of fumed silica sample available
