Silicon Dioxide For Silicone Rubber Products


Product Brand and Technical Indicators 1

 

Executive standard: HG/T3061

 

Index Technical Requirements
BET surface area, m2/g 165- 190 140-165 165- 190 140-165 150-170
Silica content (dry goods), % ≥98.5 ≥98.5 ≥98.0 ≥98.0 ≥98.5
Heating loss, % 5.0-7.0 5.0-7.0 5.0-7.0 5.0-7.0 5.0-7.0
Loss on ignition (dry goods) % 3.5-6.0 3.5-6.0 3.5-6.0 3.5-6.0 3.5-6.0
pH value 6.0-7.5 6.0-7.5 6.0-7.5 6.0-7.5 6.0-7.5
DBP absorption value, cm3/g 2.2-2.8 2.2-2.8 2.2-2.8 2.2-2.8 2.2-2.4
Sulfate content, % ≤0.6 ≤0.6 ≤1.0 ≤1.0 ≤6.0
Total iron content, mg/kg ≤150 ≤150 ≤300 ≤300 ≤150
Product appearance White powder

 

Applications: After grinding, ball-milling and other secondary processing, it can be applied to the fields of light-color rubber and transparent tape such as HTV, RTV and ceramic glaze, etc.

 

 

Product Brand and Technical Indicators 2

 

Executive standard: HG/T3061

 

1. 601 Series

Index Technical Requirements
BET surface area, m2/g 160±15 180±15 160±15 180±15 160±15 180±15
DBP oil absorption value, cm3/g ≥2.45 ≥2.45 ≥2.45 ≥2.45 ≥2.45 ≥2.45
Particle size (D50), μm 7-11 7-11 11-15 11-15 15-19 15-19
Total iron content (mg/kg) ≤150 ≤150 ≤150 ≤150 ≤150 ≤150

 

2. 701 Series

Index Technical Requirements
BET surface area, m2/g 160±15 180±15 160±15 180±15 160±15 180±15
DBP oil absorption value, cm3/g ≥2.45 ≥2.45 ≥2.45 ≥2.45 ≥2.45 ≥2.45
Particle size (D50), μm 7-11 7-11 11-15 11-15 15-19 15-19
Total iron content (mg/kg) ≤300 ≤300 ≤300 ≤300 ≤300 ≤300

 

3. 801 Series

Index Technical Requirements
BET surface area, m2/g 160±15 160±15 180±15
DBP oil absorption value, cm3/g ≥ 2.45 ≥ 2.45 ≥ 2.45
Particle size (D50), μm 7-11 11-15 15-19
Total iron content (mg/kg) ≤500 ≤500 ≤500

 

4. 930 Series

Index Technical Requirements
BET surface area, m2/g 130±15 130±15 130±15 160±15 160±15 160±15 190±15 190±15 190±15
DBP oil absorption value, cm3/g ≤2.35 ≤2.35 ≤2.35 ≤2.45 ≤2.45 ≤2.45 ≤2.45 ≤2.45 ≤2.45
Particle size (D50), μm 7-11 11-15 15-19 7-11 11-15 15-19 7-11 11-15 15-19
Total iron content (mg/kg) ≤150 ≤150 ≤150 ≤150 ≤150 ≤150 ≤150 ≤150 ≤150

 

Applications of ultra-fine products: Glass cement, HTV silicone rubber, ceramic glaze, glassfibre reinforced plastic (GFRP).