Knowde Enhanced TDS
Identification & Functionality
- Reinforcement Form
- Reinforcement Material
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Product Highlights
FILAVA™ is a direct roving made of enhanced volcanic rock filaments and manufactured in the melt spinning process, where the fibers are formed via a batch melt, followed by the lava which flow through bushing plates with nozzles and then vitrified by cooling.
FILAVA™ roving is a unique product thanks to a genuine and innovative treatment of the raw material, volcanic rock, which being the major ingredient, is aggregated and enriched with various mineral additives with the aim to increase and guarantee its original mechanical and chemical properties as well for maintain the evenness of the required mechanical properties. The components used in the batch aggregation and the fabrication process are ISOMATEX’s know-how and constitute its exclusive expertise.
Single-End and Multi-End assembly direct rovings consist of thousands of continuous filaments with elementary diameters from 9,0 to 11,0 μm. bonded into a single strand and wound onto a cardboard sleeves. A specially developed by matrices’ type sizing is applied on the fibers, which assures an excellent infusion and resin-to-reinforcement adhesion.FILAVA™ is unique due to its high strength, high elasticity and resistance to high temperature as well as to temperature’s variation (contrarily to carbon which does not like thermal shocks). This compares well to existing high-end products (R - glassfibers, S - glassfibers). In addition and as noted above FILAVATM is always better in a chemical and alkaline environment, which gives it often a definitive advantage (for instance water and concrete is alkaline, which makes other high-end products not so suitable whenever the fiber is in contact with such elements).
Applications & Uses
- Applications
- Compatible Polymers & Resins
- Composites Processing Methods
- Applications & Downstream Processing
FILAVATM rovings are designed to be used in applications requiring high mechanical properties, well wet-out and high infusion with organic matrices, where excellent processing is necessary, in thermoset matrices like epoxy resin, polyester, vinyl ester as well as in many thermoplastic systems. FILAVATM has very low catenary with smooth unwinding behavior throughout the package and has low fuzz properties that will result in smoother parts, less clean-up and improved machine efficiencies in downstream processing. Typical applications include weaving, braiding, high speed knitting, filament winding, UD-impregnation and pultrusion, chopping, …etc.
High mechanical properties such as Tensile Strength and Young modulus (elasticity), elongation and resistance to high temperature, chemical and alkali-resistance offers a unique combination of properties making FILAVATM completely compliant to the technical requirements of such high-end applications.
The applications where FILAVATM is used are basically endless …
Properties
- Physical Form
- Physical Properties
- Thermal Properties
- Chemical Resistance
- Thermal Resistance
| Value | Units | Test Method / Conditions | |
| Poisson Ratio | 0,24 | — | — |
| Volume Density | 2600 | gr/cm³ | ASTM C693 |
| Value | Units | Test Method / Conditions | |
| Annealing Point | 740 | °C | DIN ISO 7884 |
| Linear coefficient of thermal expansion 20°- 300°C, CTE | 3,72 - 4,9 * 10-6 | °C | ASTM D696 |
| Melting Point | 1.56 | °C | DIN ISO 7884 |
| Softening Point | 940 | °C | DIN ISO 7884 |
| Transition Temperature | 730 | °C | DIN ISO 7884 |
| Value | Units | Test Method / Conditions | |
| 2N HCl (%w after boiling during 3 h) | 3,53 | % | — |
| 2N NaOH (%w after boiling during 3 h) | 4,65 | % | — |
| H2O (%w after boiling during 3 h) | 0,51 - 0,7 | % | — |
| Value | Units | Test Method / Conditions | |
| Residual Value % (after 24h ageing at -200°C) | 100 | % | — |
| Residual Value % (after 24h ageing at 200°C) | 100 | % | — |
| Residual Value % (after 24h ageing at 850°C) | 40 | % | — |
Technical Details & Test Data
- Linear Density
Single-End Direct rovings
- 68 TEX (gr/km) - nominal diameter of virgin fibers Ø 9,0 μm.
- 81 TEX (gr/km) - nominal diameter of virgin fibers Ø 10,0 μm.
- 100 TEX (gr/km) - nominal diameter of virgin fibers Ø 11,0 μm.
Multi-End Direct rovings
- A multiple of Single-End direct rovings up to 2.400 TEX with very low catenary
Coefficient of variation of linear density, %
- less than 3,0%
- Sizing
Engineered for high-end structural or high thermal resistance applications and compliant to different organic and/or ceramic matrix materials being considered especially as alternative fiber reinforcement to carbon or alumina.
- Content, % weight (Loss of ignition): 0,4 – 1,0 % (according to customer’s request)
- Moisture content, % weight: less than 0,1 %
- Resin (matrix) compatibility: epoxy, polyester, vinyl ester, PA, PP, PEEK, BMI, …etc.
- Mechanical Properties
Sized and dried rovings, according to ISO 3341:2000:
- Tensile strength: 66 …. 80 cN/tex
- (depending on the sizing formulation): 1.580 … 2.000 MPa
- Elongation at break: 2,10 %
- Tensile modulus (Young or E-modulus) : 90 … 100 GPa
Impregnated strand, according to ASTM D2343 or ISO 9163:2005:
- Tensile strength: 3.400 … 3.600 MPa
- Tensile modulus (Young or E-modulus): 86 … 97 GPa
Packaging & Availability
- Packaging
Standard packaging includes cylindrical bobbins with felt- or embossed surface sleeves. The inner diameter of cardboard sleeves is 76,0 mm., the height: 260 … 300 mm. Bobbins are individually labeled and wrapped with stretched plastic film for protection and improved handling. Nominal weight for commercially available bobbins is in range of 5,0 up to 7,5 kg.
Storage & Handling
- Storage & Usage Conditions
ISOMATEX recommends storage in a cool and dry warehouse into the original packaging. For an optimal processing we recommend to use the product in ambient conditions (20 - 23 °C, 60 - 65% Relative Humidity).
FILAVA™ roving need to be kept in the workshop at least 24 hours prior usage.