Hydrophobic Fumed Silica Iota Hb4620 Applied in Htv Silicone Rubber & LSR

• Raw Material: Silica
• Material: Silicone Rubber
• Appearance: Powder
• Model NO.: IOTA HB4620
• Form: Powdered Rubber
• Color: White
• pH Value in 4% Dispersion: 5.5~8.0
• Silica Content(Based on Ignited Material: ≥99.8
• Carbon Content (Based on Material Dried: 1.5~2.5
• Transport Package: Kraft Paper Bag
• Specification: 10KG/Bag
• Trademark: IOTA
• Origin: Cn
• HS Code: 3910000000
• Production Capacity: 500mt/Month

Product Description

 

 

 

Product description

HB4620 is hydrophobic fumed silica which is produced by HL4200 after chemical post-treatment with HMDS (Hexamethyldisilazane).

 

Specification	IOTA HB4620
Specific sunface area(BET), m^2/g	170
pH value in 4% dispersion	5.5~8.0
Loss on drying(2 hours at 105ºC), %	≤0.5
Loss on ignition(2 hours at 1000ºC based on material dried for 2 hours at 105ºC), %	≤4.0
Sieve Residue(45μm), mg/kg	-
Silica Content(Based on ignited material), %	≥99.8
Tamped Density(Based on material dried at 105ºC for 2 hours), g/dm²	40~60
Carbon Content (Based on material dried at 105ºC for 2 hours), %	1.5~2.5

 

Applications 

HTV silicone rubber & LSR

Coatings & printing ink

Adhesives & Sealants

Powder Coatings

 

Properties

Reinforcing filler for elastomer

High hydrophobicity and stable thixotropy  

Anti-settling, anti-sagging agent in coatings and printing ink  

Free flow aid and anti-caking aid for powders

Rheological control for adhesives and sealants 

Package & Loading