Product Description
Bectron® PK 4342 is a one-component resin system which cures to form a soft polyurethane duroplastic. It comprises a liquid polyol system with a dispersed solid encapsulated polyisocyanate and a pigment combination selected to provide controlled rheology behaviour.
Heating the resin releases the encapsulated polyiso- cyanate resulting in a polyaddition reaction to give a resistant duroplastic cured material.
In contrast to the usual 2 component resin systems Bectron® PK 4342 is ready to use and distinguished by excellent properties and especially good environ- mental compatibility.
Properties of Bectron® PK 4342 in cured condition
The cured material displays high elasticity and strength producing excellent temperature cycling behaviour within the range of -60°C to +125°C as well as resistance to vibrations. This ensures minimal crazing even in thick layered applications. Furthermore Bectron® PK 4342 has good adhesion on almost all materials used in the field of electronics.
Bectron® PK 4342 has excellent chemical resistance to a wide range of aggressive liquids common in automotive applications.
Bectron® PK 4342 has good adhesion on almost all materials used in the field of electronics. Even after several temperature cycles there is no loss of adhesion mechanical and electrical properties. Satisfies ROHS Directive.
Application of Bectron® PK 4342
- The cured Bectron® PK 4342 is a soft duroplastic suitable for chemical, shock and vibration protection of delicate components.
- Bectron® PK 4342 is therefore most suited for the partial or selective coating of SMD and other compo- nents groups on printed circuit boards and ceramic substrates. It is also widely used as a casting/potting resin for electronic components and sensors, auto- motive electronics, plugs etc.
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About Prostech
Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs.
With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with:
- Provide quotation, sample, TDS/MSDS, and technical consultation
- Testing sample quality and verifying product compatibility in our laboratory
- Customizing material formulas for special applications
- Adapting product sizes, quantities, and packaging to meet specific needs
- Offering expert advice on suitable equipment and automation processes
- Delivering technical training and on-site support for optimal product use
Moreover, Prostech ensures the safe and accurate global delivery of all materials, including “dangerous goods”, in compliance with legal regulations. For personalized technical support or to receive a quotation, please contact us today.
Properties of component as supplied
Property | Condition | Value | Unit |
Viscosity, DIN 53019 | D=15 s-1, 23°C | 5.000 ± 1.000 | mPas |
Density, DIN 51757 | 23°C | 1,30 ± 0,03 | g/cm³ |
Shelf life | 23°C | 7 | months |
Gel-time, curing conditions
Property | Value | Value | Unit |
Temperature | 80 | 90 | °C |
Gel-time | 5 ± 2 |
| min |
Curing | 65 ± 10 | 30 ± 5 | min |
Thermal properties of cured compound
Property | Condition | Value | Unit |
Coefficient of thermal expansion, Beck Test M 56 | -20°C to + 90°C | 200×10–6 | K-1 |
Thermal conductivity, DIN 52616 | 23°C | 0,18 ± 0,02 | W/mK |
Glow-wire test, DIN IEC 695, part 21 | 30 s | 850 | °C |
