Fumed silica for coatings and paints

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Fumed silica is widely used in the field of paints and coatings, mainly as a rheological additive, which can effectively prevent the sedimentation and delamination of pigments and fillers, improve the weather resistance and scratch resistance of coatings, and improve the bonding strength between coatings and substrates  .


ELD-HL200

• HL-200 is hydrophilic fumed silica with specific surface area around 200m2/g, can be used in coatings & paintings, thin film & upr, htv & rtv silicon rubber,adhesives & sealants, printing ink, cosmetics, silicon elastomers etc.

 

Testing Item 检测项目Unit 单位Standard 指标标准Testing Method检测方法
Specific surface area(BET)比表面积m2/g150±15GB/T 20020
pH in 4% dispersion PH 值
3.9~4.5GB/T 20020
Loss on drying (2 hourat105t)加热失重%
GB/T 20020
Loss on ignition(2 hour at 1000® based on material dried for 2 hours at 105,0灼烧失重%W2.0GB/T 20020
Sieve residue(45pm)筛余物mg/kgW250GB/T 20020
Silica content (Based on ignited material)二氧化硅含量%N99.8GB/T 20020
Tamped density(Based on material dried for 2 hours at 1051] 振实比重g/dm330-60GB/T 20020




 

ELD-HB612

 

ELD HB-612 is hydrophobic fumed silica which produced by hydrophilic fumed silica with specific surface area of 150m2/g after chemical post-treatment with HMDS (Hexamethyldisilazane).

 

 

 

Testing Item 检测项目Unit 单位Standard 指标标准Testing Method检测方法
Specific surface area(BET)比表面积m2/g140±20GB/T 20020
pH in 4% dispersion PH 值
5.5~7.5GB/T 20020
Loss on drying (2 hourat105t)加热失重%wO.7GB/T 20020
Loss on ignition(2 hour at 1000® based on material dried for 2 hours at 105,0灼烧失重%w2.0GB/T 20020
Sieve residue(45pm)筛余物mg/kgn99.8GB/T 20020
Silica content (Based on ignited material)二氧化硅含量%40 〜60GB/T 20020
Tamped density(Based on material dried for 2 hours at 1051] 振实比重g/dm30.7-1.3GB/T 20020




 

 


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