High aspect ratio talc gives higher stiffness, good impact performance


Imerys Talc (Toulouse, France) has expanded its range of HAR (High Aspect Ratio) talc fillers for plastic compounds with the introduction of HAR-T77 and HAR-H92 talcs, both produced in North America. They join HAR T-84 talc, which is produced in Europe and sold globally.

Using an innovative, patented delaminating process, Imerys is able to produce HAR talc, which has a higher aspect ratio than conventionally micronized grades and brightness levels ranging from 77 to 92 Y. When introduced into TPO systems, flexural modulus can be increased by 15% and shrinkage reduced by 8 to 10% along with a reduction in coefficient of thermal linear expansion (CTLE).
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