Precipitated Silica As Reinforcing Filler For Silicon Tubes with more efficient mixing

Precipitated Silica As Reinforcing Filler For Silicon Tubes with more efficient mixing

Product name: Precipitated silica

Similar name: White carbon black, precipitated silica,silicon dioxide,SiO₂, hydrated silicon dioxide, hydrated silica

Type: SAI - 773

Chemical Property

Powder form.
Good viscosity,high purity and high activity, iron content low, and specific surface area.

Product Specification

Test Item Specification Unit
Form Powder ---
DBP absorption Value 2.0 - 2.7 cm³ / g
SiO2 ( Dry Basis ) more than 97 %
BET specific surface area 160 - 210 ㎡ / g
Ignition Loss at 1000 ℃ 2h less than 7.0 %
pH Value ( 5% aqueous suspension ) 7.0 ± 1.0
Salt As Na₂SO₄ 1 %
Heating Loss at 105 ℃ 2h % less than 4.0 - 8.0 %

Application

When this kind precipitated silica is used in silicone rubber compounders by providing:

More flexible inventory management through reduced shelf hardening;Faster, more efficient mixing and re-milling of elastomers;less fly-loss-related product waste

silicone rubber applications have certain physical strength requirements for example: wire and cable, medical and surgical, belting, hose, tubing and various fuel-resistant rubbers uses.

When physical strength is a primary concern, reinforcing silica is the filler of choice.

Precipitated Silica is used in Silicon Rubber for following reasons :
• Improves process ability of raw mixture.
• Offers resistance to heat aging.
• Minimizes crape hardening.
• Provides superior resilience and compression set.

Package and storage

1. Package:20kg / bag.

2. Storage: Kept in a low temperature, dry and ventilated place.

3. Shelf life: One year in ventilating, cool and dry area.

silicon dioxide

white carbon black

Precipitated Silica As Reinforcing Filler For Silicon Tubes with more efficient mixing Images