Name: Fumed Silica,fumed silica for spraying materials sio2 dioxide
Brand: TRUNNANO
SKU: TR-SiO2-Fumed Silica
Availability: InStock
Rating: 5 (1 reviews)

Item No.: TR-SiO2-Fumed Silica

The fumed silica has small particle size, large specific surface area, strong surface adsorption and high product purity.

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Description

Overview of Fumed Silica
The fumed silica has small particle size, large specific surface area, strong surface adsorption and high product purity,and SiO2 content of at least 99.8%, it is an extremely important inorganic nanopowder material. Due to its superior stability, reinforcing, thickening, and thixotropic properties, it has been widely used in the fields of rubber, plastics, electronics, coatings, medicine, agriculture, and CMP.

Technical parameters of hydrophilic fumed silica

Technical parameters of hydrophobic fumed silica

Features of Fumed Silica
Optimum rheology for process use
Thickening of polar fluids such as epoxy resins
Reinforcement of silicone elastomers
High additivity, e.g. in moulded products
Good hydrophobicity, improved corrosion protection
Improved dielectric properties, e.g. in cable compounds
Powder flow aid, e.g. in fire extinguishing agents
Improved scratch resistance in coatings and plastics

Advantages of Fumed Silica
Thickening and thixotropy: good dispersion, improved fluid viscosity, regulated thixotropy.
Anti-settling: prevents heavy colour fillers from settling and improves storage stability.
Anti-sagging: Reduce disordered flow, dripping and the generation of thick edges.
Anti-caking and flow-assisting: adsorb inter-particle moisture and improve powder-free flow.
Reinforcement: Increase mechanical properties and enhance deformation resistance.
Dispersing: make liquid system dispersing excellent

Application of Fumed Silica

Coating Finishes, Coatings, Inks:Prevents pigment fillers from sinking.Stops the phenomenon of sagging and dripping.Improves colour vividness.It can improve coatings' weather and scratch resistance and the bonding strength between the coating and the substrate.
Adhesives and sealants: Controlled rheology, no change in transparency, enhanced waterproofing, fire resistance and bonding effect.
Pharmaceuticals: good flow aid and anti-caking properties, excellent disintegrant and retardant.
Pesticides: They are excellent suspension aids, prevent active ingredients from sinking, and fully enhance the drug's efficacy.
Resin matrix composites: improve the performance of resin matrix materials so that it has high strength, high toughness, and high thermal stability.
Chemical mechanical polishing: reduce surface scratches and damage of workpieces.
Personal care: toothpaste.
Food additives
Building materials

Recommended Addition Level for Fumed Silica

Application Industries	Effect	Recommended Addition Amount
Paints and Coatings	Rheology regulation; anti-sagging, anti-settling	0.5-2%
Unsaturated polyester resins, gelcoats	Rheology regulation;anti-sagging, anti-settling	0.5-2%
High temperature vulcanised silicone rubber	Reinforcement	15-30%
Two-component room temperature vulcanised silicone rubber	Thickening; Reinforcement	10-20%
Adhesives	Rheology Modification;Anti-sagging, Anti-settling	2-10%
Cable paste	Thickening	5-10%
Colloidal batteries	Thickening	0.5-6%
Industrial Powder	Anti-caking	0.5-1%

Company Profile

NANOTRUN(www.rboschco.com) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and nanomaterials, including boride powder, nitride powder, graphite powder, sulfide powder, 3D printing powder, etc.
The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.
If you are looking for high-quality zirconium plate steel metals, please feel free to contact us or click on the needed products to send an inquiry.

Payment Term

L/C, T/T, Western Union, Paypal, Credit Card etc.

Shipment Term
By sea, by air, by express, as customers request.
Storage Conditions
1) Store in a dry environment at room temperature.
2) Avoid damp and high temperature.
3) Use immediately after opening the inner packing bag.

FAQ

Q1
How does fumed silica play the role of dust prevention？
By dispersing the paint in an inflated or colloidal state, forming a similar network structure to achieve the purpose of anti-sinking, or adsorbed on the surface of the pigment and filler, playing a bridging role in the pigment, to control the flocculation of the pigment and anti-sinking.
Q2
What are the uses of pyrogenic silica?
It is an amorphous silicon dioxide with thickening, thixotropy, reinforcing, anti-flocculation, etc. It is also one of the most important high-tech, ultra-fine, inorganic new materials. In daily production applications, fumed silica is widely used in coatings, inks, adhesives, rubber, cosmetics, pharmaceuticals and other industry sectors.
Q3
Difference between fumed silica and precipitated silica.
The particles of precipitated silica are generally micron-sized, while the particles of fumed silica are much finer, usually nanometre-sized. Precipitated silica has a higher level of impurities and is typically around 93% pure, while fumed silica has a lower level of impurities and can be over 99% pure.
Q4
Is fumed silica harmful to the human body?
The human body's long-term exposure to silica may cause certain effects on the skin; some patients may appear red, swollen, and itchy symptoms. If people inhale the dust containing silica for a long time, they will suffer from silicosis.
Q5
Can silicon dioxide be metabolised?
Silicon dioxide cannot be metabolised because it cannot be dissolved in the body. Silicon dioxide cannot be degraded and accumulates in the lysosomes, causing damage to cellular functions.