White powder Precipitated Silica in rubber

Similar name

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

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.

There are 3 kinds of forms,granular form ,powder form and micropearl form .granular form and micropearl form has low dust .

Specifications

silica  Powder
Type	Felcosil-120	Felcosil-140	Felcosil-165	Felcosil-185	Felcosil-195
Heating loss（105° 2h）, %	4.0-8.0
Igniting 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
	–

 

Silica White Micro Pearl
Type	Felcosil-HD175	Felcosil-HD185	Felcosil-195
Heating loss（105° 2h）, %	4.0-8.0
Igniting 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
	–

 

White Granular
Type	Felcosil-175	Felcosil-185	Felcosil-195
Heating loss（105° 2h）, %	4.0-8.0
Igniting 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

Precipitated Silica in rubber  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.