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HAR®
High aspect ratio talcs (HAR®) for stiffer and lighter parts
HAR® talcs enhance stiffness
Our unique range of HAR® talc products are produced using a patented delaminating process which results in significantly higher aspect ratios than conventionally micronized talcs. Proper processing and dispersion of HAR® talc in plastic compounds generates excellent orientation of particles during injection molding, which maximizes stiffness, HDR and dimensional stability of the resulting part.
Example of a PP compound containing 20% HAR®
Flame retardancy
HAR® talcs are the best solution on the market for flame retardant formulations due to the effect of their higher aspect ratio on char and barrier properties, which results in reduced rate of heat / mass transfer and better fire retardancy.
Automotive applications
Using HAR® talcs in automotive parts allows manufacturers to make thinner, lighter auto parts which contributes to making cars lighter, hence improving fuel economy (CAFE) and decreasing CO2 emissions.
HAR
® talcs also provide excellent performance in terms of:
- dimensional stability, leading to lower mold shrinkage and CTE, which is ideal for zero-gap designs
- increased flexural modulus (about 20% higher than micronized fine talcs)
- improved heat distortion temperature
HAR
® talcs are particularly recommended for:
- exterior automotive parts such as bumpers, rockers and fenders
- high impact resistant interior trims such as dashboards, door pillars and interior trim
Household appliances
In household appliances such as washing machines, HAR® compounds make ideal alternatives to fibreglass-reinforced plastics, giving the same rigidity levels and improved geometry at a reduced cost.
Food packaging
HAR® talcs are ideal for food packaging applications where barrier properties are crucial.
Easy handling – high throughput
HAR® talcs are supplied in micro-sphere, densified form and have excellent flow properties for easy handling and high compounding throughput.
Available grades:
- Luzenac HAR® T84
- Luzenac HAR® W92
- Steaplus HAR® T77
We supply an extensive range of products for the Plastics market.
To help you select exactly the right product for your formulation requirements, please contact our technical support team.
