Ultimate RF performance
Patented PREPERM® materials boost the performance of antennas and other RF components to new levels. They also provide solutions for tomorrow’s mmWave frequency demands. Our PREPERM® portfolio includes a wide range of materials to match the requirements of your application.
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PREPERM® Standard Grades
The standard PREPERM® grades cover a wide range of dielectric constants, and they can be both injection molded and machined easily. These grades have very stable dielectric performance and low losses.
| Dielectric constant | Loss tangent | ||||||
| 2.4 GHz | 22 GHz | 60 GHz | 2.4 GHz | 22 GHz | 60 GHz | ||
| PPE260 | 2.60 | 2.60 | 2.58 | 0.0009 | 0.0022 | 0.0025 | |
| PPE300 | 3.00 | 3.00 | 2.99 | 0.0009 | 0.0022 | 0.0025 | |
| PPE320 | 3.20 | 3.20 | 3.19 | 0.0009 | 0.0024 | 0.0026 | |
| PPE350 | 3.50 | 3.50 | 3.49 | 0.0009 | 0.0024 | 0.0026 | |
| PPE400 | 4.00 | 4.00 | 3.99 | 0.0009 | 0.0024 | 0.0026 | |
| PPE440 | 4.40 | 4.40 | 4.40 | 0.0009 | 0.0024 | 0.0026 | |
| PPE500 | 5.00 | 5.00 | 4.99 | 0.0009 | 0.0024 | 0.0026 | |
| PPE650 | 6.50 | 6.49 | 6.49 | 0.0009 | 0.0024 | 0.0026 | |
| PPE800 | 8.00 | 7.97 | 7.97 | 0.0009 | 0.0024 | 0.0026 | |
| PPE950 | 9.50 | 9.52 | 9.53 | 0.0009 | 0.0020 | 0.0025 | |
| PPE1200 | 12.0 | 12.0 | 11.9 | 0.0010 | 0.0025 | 0.0030 | |
Looking for more detailed product or performance data? Please log in to our technical center.
Standard Grades available in colours, too
The standard PREPERM® grades cover a wide range of dielectric constants. Often, you need to have more than one Dk in a product. To make it easier to separate different dielectric constants from one another, we offer a full range of coloured granules, one colour for each Dk.
Coloured or not, you can rely on the same, proven quality you have come to expect of us. Colouring does not have a significant effect on any of the material product properties. Coloured grades are available on request. Please contact our Sales for more information and add some colour to your life!
| Grade | Dielectric constant | Color |
| PPE300COL | 3.0 | Yellow |
| PPE320COL | 3.2 | Pink |
| PPE350COL | 3.5 | Blue |
| PPE400COL | 4.0 | Peach |
| PPE440COL | 4.4 | Green |
| PPE500COL | 5.0 | Purple |
| PPE650COL | 6.5 | Grey |
| PPE800COL | 8.0 | Light pink |
| PPE950COL | 9.5 | Light blue |
| PPE1200COL | 12.0 | Lilac |
PREPERM® fire retardant grades meet challenging demands
The flame retardant grades cover dielectric constants from 2.65 to 12 and have a V0 or V1 UL94 rating. They are well suited for example for airplane wi-fi, as well as various applications within the telecom and automotive industries. Flame retardancy is a must in many of these applications because fires generated from e.g. overheating of equipment can have catastrophic consequences.
Preperm FR grades have similar advantages as the standard series. They are easy to process, and they have good mechanical properties and thermal stability. Our grades are also ROHS compliant.
PREPERM® FR series is now available in granules. If you prefer it in some other shape, please feel free to contact us with your request!
PREPERM® Radome Grades
PREPERM® radome grades are designed to have excellent RF performance combined with high impact strength and moldability. They are available in black (RB) and sand (RS) colors, with different special properties such as high impact strength (HI) and flame retardancy (FR).
| Dielectric constant | Loss tangent | ||||||
| 2.4 GHz | 28 GHz | 79 GHz | 2.4 GHz | 28 GHz | 79 GHz | ||
| RS260 | 2.58 | 2.54 | 2.57 | 0.0009 | 0.0020 | 0.0027 | |
| RB260 | 2.61 | 2.56 | 2.59 | 0.0010 | 0.0020 | 0.0027 | |
| RS265FR | 2.65 | 2.65 | 2.65 | 0.0032 | 0.0035 | 0.0036 | |
Looking for more detailed product or performance data? Please log in to our technical center.
PREPERM® High Temperature Grades
The high temperature product family is called PRERERM® PEEK. The high ɛr combined with very low dissipation factor and outstanding thermal stability makes PREPERM® PEEK an excellent material for high frequency applications when the products are used in harsh conditions.
| Dielectric constant | Loss tangent | ||||||
| 2.4 GHz | 22 GHz | 60 GHz | 2.4 GHz | 22 GHz | 60 GHz | ||
| PEEK700 | 7.0 | 0.0024 | |||||
| PEEK900 | 9.0 | 0.0025 | |||||
| PEEK1000 | 10.0 | 0.0024 | |||||
| PEEK1200 | 12.0 | 0.0027 | |||||
Looking for more detailed product or performance data? Please log in to our technical center.
Click to see also the PREPERM® PEEK product release and blog post!
PREPERM® Flexible Grades
Flex-series materials have high elongation at break. They are typically used in films, sheet, filaments or applications that need extensive bending.
| Dielectric constant | Loss tangent | ||||||
| 2.4 GHz | 22 GHz | 60 GHz | 2.4 GHz | 22 GHz | 60 GHz | ||
| FLX400 | 4.0 | 0.0010 | |||||
| FLX700 | 7.0 | 0.0009 | |||||
| FLX1100 | 11.0 | 0.0012 | |||||
Looking for more detailed product or performance data? Please log in to our technical center.
PREPERM® High Permittivity Series
H-series is based on a different filler technology than the Standard series and it provides very high permittivity up to 23.
| Dielectric constant | Loss tangent | ||||||
| 2.4 GHz | 22 GHz | 60 GHz | 2.4 GHz | 22 GHz | 60 GHz | ||
| H1500HF | 15.0 | 0.0010 | |||||
| H2300HF | 23.0 | 0.0037 | |||||
Looking for more detailed product or performance data? Please log in to our technical center.
PREPERM® Customized
For industrial applications, we can make plastic with a customized dielectric constant according to your wishes, from 2.2 to 23. We can also tune the mechanical, thermal or molding characteristics. Please contact our sales for more information.
Looking for more colour?
To make the installation work easier for you, PREPERM® is also available in colours. Ask us for more information!
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Did not find the shape or size you were looking for? In that case send your message even sooner. Our sales team is happy to serve you for special material requests.