English
HC-139 is hydrophobic fumed silica which is produced by hydrophilic fumed silica with specific surface areaof 200m2/g after chemical post-treatment with PDMS [Polydimethylsiloxane).
Physical and chemical properties
| Properties | Unit | Typical Value | Testing Standard |
| Specific Surface Area(BET) | ㎡/g | 110±30 | GB/T 20020 |
| Carbon Content( Based on material dried at 105℃ for 2 hours) | % | 4.0~7.0 | GB/T 20020 |
| pH value in 4% dispersion(H2O: Ethanol=1:1) | - | 4.0~7.0 | GB/T 20020 |
| Loss on drying( 2 hours at 105°C) | % | ≤0.7 | GB/T 20020 |
| Loss on ignition(2 hours at 1000℃, based on material dried for 2 hours at 105°C) | % | ≤10.0 | GB/T 20020 |
| Tamped Density(Based on material dried at 105℃ for 2 hours) | g/L | 45~70 | GB/T 20020 |
| Silica Content(Based on ignited material) | % | ≥99.8 | GB/T 20020 |
※ Customized products available for special physical or chemical data.
Application
01 Applications
1. Silicone rubber
2. Coatings & printing ink
3. Adhesives &Sealants
4. Greases & cable gel
5. Unsaturated resin
6. Powders
02 Properties
1. Good thickening and thixotropic property
2. Good anti-sagging properties and excellentstabilityin epoxy resin
3. Excellent reinforcing properties in silicone rubberespecially at high filler loading levels and no crepehardening on aging
4. Well suited for transparent system products
5. Free-flow aid for water-proof material and powders
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.
Ready to Get Started?
Contact Hocon Organic Silicon Product suppliers today to bring your idea or design to life sooner!
Please complete the contact form and we aim to get back to you within 24 hours.
Our Market
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 ...
