Rubber Grade Precipitated White Powder Silica

Rubber Grade Precipitated White Powder Silica

Chemical Properties

Precipitated silica, a form of synthetic amorphous silicon dioxide, is derived from quartz sand, a crystalline form of silicon dioxide. The physical properties of precipitated silica can be manipulated during the manufacturing process to deliver products with a wide range of performance-enhancing features engineered for many different end-use applications.

• Efficient rheology control in a wide range of simple and complex liquid systems. Imparts viscosity, pseudoplasticity and thixotropy. Stabilises pigments and prevents sagging.
• Provides effective free flow and anti-caking behaviour. Can be used as a solid carrier for liquids.
• Improves mechanical and optical properties of silicone rubber.
• Improves anti-corrosion performance of protective and marine coatings. Reduces moistures sensitivity and increases hydrophobicity.

Specifications

Precipitated Silica Powder
Type	120P	140P	165P	175P	185P	195P
Heating loss（105° 2h）, %	4.0-8.0
Lgniting loss（1000° 2h）, %	≤7.0
DBP Absorption，cm³/g	2.00-3.50
Sieve residue，%	45um≤0.5
pH（5% suspension）	6.0-8.0
SiO2 % Min，%	≥97.0
BET specific surface area，m²/g	120±15	140±15	160±15	175±15	180±15	190±15
Salt as NA2SO4，%	≤2.0
Pellet hardness	–

 

Application

• Efficient rheology control in a wide range of simple and complex liquid systems. Imparts viscosity, pseudoplasticity and thixotropy. Stabilises pigments and prevents sagging.
• Provides effective free flow and anti-caking behaviour. Can be used as a solid carrier for liquids.
• Improves mechanical and optical properties of silicone rubber.
• Improves anti-corrosion performance of protective and marine coatings. Reduces moistures sensitivity and increases hydrophobicity. Useful in silicone sealants for extending shelf life for example.
• Anti-blocking agent for PET films.
• Many more applications: greases, batteries, agrochemicals etc.

SiO2, Precipitated Silica, White Carbon, Silicon Dioxide, Silica Powder, Amorphous Precipitated Silica