The low viscosity of melted CBT^® 500 resin is especially suited
for use in many casting processing techniques. By incorporating high filler and fiber loadings (greater than 70% by weight), significantly greater flexibility in desired part properties can be achieved.

Use of CBT in casting offers the following benefits over conventional polymers:

• Thermally neutral polymerization (<10ºC) allows larger castings and up to 50% reduction in cycle time.
• VOCs are negligible.
• Improved product quality:  Good surface appearance and stability, no chipping, fewer rejects, less post-polymerization processing.

CBT is effective in casting with minerals or metals such as calcium carbonate, silicon dioxide, barium sulfate, and aluminum. It produces highly filled or reinforced PBT materials that achieve the following characteristics:

• High heat-distortion temperatures.
• Low thermal expansion.
• High surface hardness and scratch resistance.
• Superior machinability compared to epoxy-based syntactic foam.
• Excellent surface finish with good edge definition.

Centrifugal casting and vacuum-assisted casting can be used to create rods, tubes, rollers, discs, and sheets of virtually any size that the equipment can support.

These materials offer great potential for high-volume production of a variety of products and parts:

Solid-surface products such as sinks, wash basins, bath and shower accessories, kitchen counter tops, working tables, and floor tiles.

Rapid prototyping or short-run production parts. The engineering plastic properties of PBT permit functional testing of commercial products. 

Producing unfilled PBT resin products ranging from stock shapes to net shape parts.

 

Visit our Technical Library for more information