Bectron® PB 3201
Bectron® PB 3201 is a polybutadiene-based two-part system used with hardener PH 4918. It cures to a flexible, solvent-free compound with excellent low-temperature flexibility and chemical resistance. Ideal for potting and casting applications, it delivers long-term protection against thermal shock and environmental stress.
Bectron® PB 3201 Features:
- High elasticity and strength at low temperatures
- Excellent resistance to solvents
- Low shrinkage upon curing
- Strong adhesion to most substrates
- Solvent-free formulation
- Complies with ROHS standards
Bectron® PB 3201 Applications:
- Potting of PCBs requiring shock and chemical resistance
- Casting for humidity and vibration protection
- Encapsulation of electronic assemblies
About Prostech
Prostech Philippines is a one-stop solution provider for specialty materials and equipment across electronics manufacturing, from PCBA to final assembly. Our core material and equipment solutions include:
- PCB Assembly Materials
- Cleaning & Degreaser
- Circuit Board Protection
- Thermal Management Solutions
- EMI Shielding
- General Assembly Adhesives
- Elastomeric Materials
- Process Equipment: Potting & Coating Systems, UV/ Heat Curing, Plasma Treatment, Tape placement automation, and cleaning machines
Technical Added Value to customer
Prostech offers customized material and process equipment solutions with engineering support throughout R&D, production process optimization, and performance validation. Our in-house lab located in Alabang, Muntinlupa is equipped to conduct electronics material testing, application simulation, and adhesive validation, helping customers reduce the need for onsite trials and accelerate implementation.
International Supply Chain Advantage
Regional warehouse hubs across Vietnam, Singapore, Malaysia, and the Philippines ensure cross-border reliable supply. In Philippines PEZA-bonded warehouse located at Lima Industrial Park, Batangas enables Prostech to provide responsive, demand-based delivery and significantly shortens standard lead time for Philippines customers.
Need help selecting the right product or solution?
Properties of materials as supplied
Property | PB 3201 | PH 4918 | Units |
Colour | White, Milky | Light yellow |
|
Viscosity, 23°C, 7.3 s-1, DIN 53019 | 4500 ± 1500 | 1200 ± 300 | mPa.s |
Density, 20°C, DIN EN ISO 2811-1 | 0.91 ± 0.05 | 1.16 ±0.05 | g/cm3 |
Shelf Life | 6 | 6 | months |
Properties of mixture
Mixing Ratio Bectron® PB 3201 : Hardener Bectron® PH 4918 |
weight |
100 : 58 |
Parts |
Viscosity DIN 53019 | D=7 s-1, 23°C | 7500 ± 2000 | mPa.s |
Process time | 25°C | 30 | min |
Thermal Properties of cured compound
Property | Condition | Value | Units |
Operating Temperature range |
| -60 to +150 | °C |
Glass transition temperature |
| -63 | °C |
Coefficient of Thermal Expansion (Beck M56) |
| 17 X 10-5 | K-1 |
