Product Description
Bectron® PK 4353 is a one-component resin system which cures to form a semi-flexible polyurethane duroplastic. It comprises a liquid polyol system with a dispersed solid encapsulated polyisocyanate and a pigment combination selected to provide controlled rheology including excellent thixotropic properties. Heating the resin releases the encapsulated polyiso-cyanate resulting in a polyaddition reaction to give a resistant duroplastic cured material.
It is available in blue.
In contrast to the usual 2 component resin systems Bectron® PK 4353 is ready to use and distinguished by excellent properties and especially good environ-mental compatibility.
Properties of Bectron® PK 4353 in cured condition
The cured material displays high elasticity and strength resulting in very good temperature cycling behaviour within the range of -50°C to +125°C as well as good resistance to vibrations. Bectron® PK 4353 has excellent chemical resistance to a wide range of aggressive liquids common in automotive applications. Bectron® PK 4353 also displays very good adhesion to most materials used in the electronic field. Even after several temperature cycles there is no loss of adhesion, and the level of mechanical and electrical properties is maintained.
Satisfies ROHS Directive.
Applications of Bectron® PK 4353
The cured Bectron® PK 4353 is a semi-flexible duro-plastic suitable for chemical and shock protection of components. Bectron® PK 4353 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 used as a casting/potting resin for electronic components and sensors, automotive 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
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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 , |
3.500 ± 500 |
mPa.s |
|
Density, DIN 51757 |
23°C |
1,33 ± 0,02 |
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 ± 5 |
30 ± 5 |
min |
Here are BECTRON® PK-Series (1 Component, heat-curing)
| Product Code | Colour | Viscosity [mPas] | Max Temp. [ºC/20,000 h] | Hardness [Shore] | Cure Speed [min] @ +90 ºC | Thermal Conductivity [W/mK] |
| PK 4332 | Black | 5,250 | +125 ºC | 35 A | 60 | 0.2 |
| PK 4340 | Black | 9,500 | +125 ºC | 70 A | 30 | 0.3 |
| PK 4342 | Black | 5,000 | +125 ºC | 70 A | 30 | 0.3 |
| PK 4344 | Black | 2,000 | +125 ºC | 70 A | 30 | 0.3 |
| PK 4351 | Black | 6,250 | +125 ºC | 30 D | 30 | 0.3 |
| PK 4353 | Black | 3,750 | +125 ºC | 30 D | 30 | 0.3 |
| PK 4364B | Blue | 5,000 | +125 ºC | 40 D | 30 | 0.3 |
| PK 5532 | Black | 5,500 | +130 ºC | 35 A | 30 | 0.2 |
| PK 5542 | Black | 5,000 | +130 ºC | 70 A | 30 | 0.4 |
| PK 5553 | Black | 3,500 | +130 ºC | 30 D | 30 | 0.3 |
