SPHERILEX® 30 AB
- CAS Number
- 7631-86-9
SPHERILEX® 30 AB is a very fine particle size specialty precipitated silica, which has attractive properties for antiblocking application of polymer films. As shown in antiblocking testing, its spherical particle morphology and uniform particle size distribution provides optimal clarity and antiblocking efficiency in plastic films. Based on its low absorptivity it performs also excellent in combination with slip agents. High masterbatch loadings are possible due to its easy incorporation and dispersion during thermoplastic compounding process.
Identification
- Chemical Name
Cyclotetrasiloxane octamethyl- reaction products with silica; Silica gel pptd. cryst.-free
Product families
- Surface Modifiers
Other characteristics
- Brand
- SPHERILEX
- Shelf LIfe
- 24 months
- Technology
- Plastics
- Benefits
Low Coefficient of Friction, high transparency, good dispersibility, low absorption of additives.
- Overview
Antiblocking agents are essential additives in the production of plastic films. These additives help facilitate film winding operations and improve the handling properties of films during subsequent processing. Under the brand names SPHERILEX® 30 AB and SPHERILEX® 60 AB, Evonik has introduced two grades of precipitated silica to the antiblock market. These products are produced by a new, patented manufacturing process that simultaneously allows spherical particle shape, controlled particle size, and narrow particle size distribution to be achieved. This unique combination of product properties offers significant benefits, especially for application as an antiblocking agent in blown and cast films including polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), and polyamide (PA).. SPHERILEX® 60 AB was developed for standard films based on PE and PP, whereas SPHERILEX® 30 AB is specially designed for very thin films and biaxially oriented film applications.
- Storage Condition
Our silica products are inert and extremely stable chemically. However, due to their high specific surface area, they can absorb moisture and volatile organic compounds from the surrounding atmosphere. Therefore, we recommend storing the products in sealed containers in a dry, cool place, and removed from volatile organic substances. Even if a product is stored under these conditions, after a longer period it can still pick up ambient moisture over time, which could lead to its exceeding the specified moisture content. For this reason, our recommended use-by date is 24 months after date of manufacture. Product more than 24 months old should be tested for moisture content before use in order to make certain that it is still suitable for the intended application.
- Chemical Inventories
- DSL (Canada)
- TSCA (USA)
- Country Availability
- Canada
- Mexico
- USA
- Certifications and Compliance
- FDA 21 CFR 175.105
- FDA 21 CFR 175.125
- FDA 21 CFR 175.230
- FDA 21 CFR 175.300
- FDA 21 CFR 175.320
- FDA 21 CFR 175.350
- FDA 21 CFR 175.380
- FDA 21 CFR 175.390
- Main Benefits of Antiblocking Agents
Spherical particle morphology; Narrow particle size distribution; Low coefficient of friction (COF) of films; High film transparency; Excellent performance in combination with a slip agent (low oil absorption); Easy dispersibility and high masterbatch loading; Low abrasion of processing equipment
Technical data
Table 1 of 1
10 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Wet Screen Residue (min. 25µm) | max. 0.01 | % | ISO 187-18 |
| Specific Surface Area (N₂) Multipoint | 100 | m²/g | ISO 9277 |
| SiO₂ Content | min. 97 | % | ISO 3262-19 |
| Sieve Residue (min. 25 µm) | max. 100 | ppm | Mocker Apparatus, ISO 787-18 |
| pH Value (in 5% water) | 7.5 | — | ISO 787-9 |
| Particle Size (D50) | 4 | µm | Laser Diffraction, ISO 13320 |
| Loss on Drying (at 105°C, 2 Hours) | max. 2 | % | ISO 787-2 |
| Linseed Oil Absorption (at 105°C, 2 Hours) | 80 | ml/100g | ISO 787-5 |
| ISO Brightness | min. 95 | % | ISO 2470 |
| Dynamic Void Volume (DVV) (at 10 MPa) | 70 | cc/100g | Internal Method |
