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HJSIL®300 Hydrophilic Fumed Silica

HJSIL® 300 is a kind of hydrophilic fumed silica with a specific surface area of 300 m²/g. It’s high purity white colloidal powder.
 
  1. Used as anti-settling, thickening, anti-sagging agent
  2. Improvement of free flow and anti-caking characteristics of powders
  3. Rheology and thixotropy control of liquid systems, binders, polymers, etc.
  4. Reinforcement filler in elastomers
  5. Excellent transparency in unsaturated polyester resins
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Product Description

Characteristics

HJSIL® 300 is a kind of hydrophilic fumed silica with a specific surface area of 300 m²/g. It’s high purity white colloidal powder.


Properties

  • Thickening and thixotropy:HJSIL provides thickening and thixotropic effects in liquid systems such as polyesters, epoxies, and urethane resins.

  • Reinforcement:Adding HJSIL as a filler material improves various mechanical properties of elastomers, including modulus, elongation at break, tensile strength and tear resistance. HJSIL’s large specific surface area also makes it possible to achieve excellent transparency in elastomers.

  • Anti-settling effects:HJSIL improves the suspension behavior in liquid systems, such as pigmented coatings or resins containing fillers.

  • Anti-caking, effects for improved flow characteristics:Due to a property that makes it behave like ball bearings, HJSIL resists lumping and clogging. It can be used to improve the storage stability of powders that are especially prone to caking. HJSIL can also be used to improve flow characteristics and prevent flow problems

  • Anti-blocking effects:HJSIL is added to film resins to reduce “sticking”. It reduces close contact between film layers

  • Adsorbent:Gaseous, liquid or solid materials can be precipitated or adsorbed on the surface of HJSIL. This serves as an ideal carrier or substrate for active ingredients due to its high specific surface area and inertness in the presence of all chemicals except strong alkalis and hydrofluoric acid

  • Insulation:With its very low solid state conductivity and vast spacing between particles, HJSIL provides excellent electrical and thermal insulation properties


Characteristic physico-chemical data

Properties and test methods

Unit

Typical Value

Standardization

Specific surface area (BET)

m²/g

300 ± 25

GB/T10722

pH value (in 4% dispersion)


3.6 ~ 4.5

GB/T1717

Loss on drying (2 hours at 105°C)

Wt%

≤ 1.5

GB/T5211.3

Loss on ignition
(2 hours at 1000°C, based on material dried for 2 hours at 105°C)


Wt%


≤ 2.5


GB/T20020

Sieve residue (45 μm)

%

≤ 0.05

GB/T5211.14

Silica content (based on ignited material)

Wt%

≥ 99.8

GB/T20020

Tamped density (based on material dried for 2 hours at 105°C)

g/L

40 ~ 60

GB/T5211.4

Carbon content (based on material dried for 2 hours at 105°C)

Wt%

≤ 0.2

GB/T20020


Applications

  • HTV and RTV silicone rubber

  • Adhesives and sealants

  • Paints and coatings

  • Cosmetics

  • Cable compounds

  • Unsaturated polyester resins, laminated resins and gel coats

组 6140


Packaging and storage

HJSIL® 300 is supplied in 10kg kraft paper bags. We recommend to store the product in closed containers under dry conditions and to protect the material from volatile substances.

组 4759


Product Classification

Contact Us
Phone: +86 156 3910 5040
E-Mail: info@minmetalseast.com
Fax: +0086 391 2937006
Add: No.1159, Renmin Road,
Jiaozuo City, Henan Province, P.R.China

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Contact Us

Phone: +86 156 3910 5040

E-Mail: info@minmetalseast.com

Fax: +0086 391 2937006

Add: No.1159, Renmin Road,
Jiaozuo City, Henan Province, P.R.China

Copyright @ Henan Minmetals East Silicon Industry Co.,Ltd. All
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