HYDROPHOBIC FUMED SILICA HC-620

HC-620 is hydrophobic fumed silica which is produced by hydrophilic fumed silica with specific surface area of 200m2/g after chemical post-treatment with HMDS (Hexamethyldisilazane).

Physical and chemical properties

PropertiesUnitTypical ValueTesting Standard
Specific Surface Area(BET)㎡/g170±30GB/T 20020
Carbon Content( Based on material dried at 105℃ for 2 hours)%1.5~2.5GB/T 20020
pH value in 4% dispersion-6.0~9.0GB/T 20020
Loss on drying( 2 hours at 105°C)%≤0.7GB/T 20020
Loss on ignition(2 hours at 1000℃, based on material dried for 2 hours at 105°C)%≤4.0GB/T 20020
Tamped Density(Based on material dried at 105℃ for 2 hours)g/L40~60GB/T 20020
Silica Content(Based on ignited material)%≥99.8GB/T 20020

Customized products available for special physical or chemical data.

Application

01 Applications

1. HTV silicone rubber and LSR

2. Coatings & printing ink

3. Adhesives & Sealants

4. Powder Coatings

 

02 Properties

1. Reinforcing filler for elastomer

2. High hydrophobicity and stable thixotropy

3. Anti-settling and anti-sagging agent in coatings and printing ink

4. Free flow aid and anti-caking aid for powders

5. Rheological control for adhesives and sealants


Packaging and storage

Pallet packaging methods include: 10 kg packaging (180 kg/pallet).

 

Store in original airtight container in dry conditions for at least 24 months. At the same time, the "best before" of the product will be indicated on each product label.

 

Storage time exceeding the best before date marked on the label does not mean that the product can no longer be used. However, in this case, in order to ensure product quality, it is necessary to re-check the relevant properties of the product.


For more information on Safety Data Sheets (MSDS), Product Safety Data Sheets, and Product Inspection Reports, please contact us.

HYDROPHOBIC FUMED SILICA HC-620

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Hocon International Co., Ltd. was established in 2015, is a manufacturer specializing in silicone products. Its product varieties include: organosilanes, silicone resin, silicone oil, modified silicone oil and their deep-processing products, the application fields of the products involve daily ...