Rubber Grade Precipitated Silica

Rubber Grade Precipitated 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.

Specifications

Precipitated Silica Powder
Type	120	140	165	185	195
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	180±15	190±15
Salt as NA2SO4，%	≤2.0
Pellet hardness	–

 

Precipitated Silica White Micro Pearl
Type	HD175	HD185	195
Heating loss（105° 2h）, %	4.0-8.0
Lgniting loss（1000° 2h）, %	≤7.0
DBP Absorption，cm³/g	2.00-3.50	2.00-2.80	2.00-3.5
Sieve residue，%	100Mesh≥80.0
pH（5% suspension）	6.0-8.0
SiO2 % Min，%	≥97.0
BET specific surface area，m²/g	170±15	180±15	190±15
Salt as NA2SO4，%	≤2.0
Pellet hardness	–

 

Precipitated Silica White Granular
Type	175	185	195
Heating loss（105° 2h）, %	4.0-8.0
Lgniting loss（1000° 2h）, %	≤7.0
DBP Absorption，cm³/g	2.00-2.80
Sieve residue，%	60Mesh≥75
pH（5% suspension）	6.0-8.0
SiO2 % Min，%	≥97.0
BET specific surface area，m²/g	170±15	180±15	190±15
Salt as NA2SO4，%	≤2.0
Pellet hardness	≤70

 

Application

Silica Precipitated Silica is used in tires, shoe materials, rubber, silicone rubber, silica matting agent and ultra-fine used in coatings, paint inks, precipitated silica does not contain heavy metals and is used in feed and food additives, etc.

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