Product description
Bectron® PB 3201 with Hardener Bectron® PH 4918 is a 2 component system which will produce a flexible compound suitable for potting and casting. It is based on polybutadiene and provides good flexibility at low temperature and superior resistance properties. It is resistant to organic and inorganic solvents with good adhesion. It cures with low shrinkage and good adhesion to most substrates. It is solvent free and does not damage components on the board.
Application of Bectron® PB 3201
Bectron® PB 3201 is suitable for many potting applications needing stability to thermal shock. It is ideal for casting whole PCB to give where good protection against humidity aggressive chemicals shock and vibration are required.
Properties of Bectron® PB 3201 in cured condition
The cured material has high elasticity with flexibility and strength at low temperatures.
Good electrical properties
Low glass transition temperature Tg (-63°C)
Satisfies the requirements of ROHS
Please download TDS to see full technical properties of product.
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About Prostech
Prostech provides specialized manufacturing and bonding solutions for a wide range of industries, serving as an authorized distributor of leading global manufacturers of industrial materials and equipment. Our product range is focused and in-depth, with the aim of delivering “customized” solutions tailored to each customer’s specific applications and needs. Browse our full selection of products here.
Our dedicated technical team is always ready to assist our customers in:
- Testing sample quality and verifying product compatibility in our laboratory
- Providing expert advice on suitable equipment and automation processes
- Customizing material formulas to meet special application requirements
- Customizing product sizes, quantities, and packaging according to customer needs
- Offering technical training and on-site support to ensure optimal use of our products
Prostech ensure the safe and accurate delivery of all types of materials, including “dangerous goods,” in compliance with legal regulations.
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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 |
