High aspect ratio talc gives higher stiffness, good impact performance

10/27/2015

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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