Custom Compounders Since 1973

Polifil® M

Polifil M

Mica-Reinforced Polypropylene

Polifil® M series compounds are homopolymer polypropylene resins reinforced with mica. They combine an improved range of high-stiffness values with low mold shrinkage. These compounds are used in large area broad span applications where high modulus values are required and retained. Standard processing techniques are applicable.

Use this information as a guide to aid you in selecting the proper resin for your application. TPG will custom compound and fine-tune our formulations for your application.

The property values listed in the PDF document(s) have been obtained using laboratory controlled test methods. They are offered without guarantee since conditions under which the product is used are beyond our control. Mold shrinkage is intended as a guide only, as specific shrinkage is affected by part design, mold design and molding conditions. Therefore, The Plastics Group disclaims any liability for loss or damage incurred in connection with the use of this product.

Reinforcement content (%) TPG WI 20 40
Specific gravity D 792 1.05 1.23
Melt flow 230/2.16 (g/10 min) D 1238 8-12* 8-12*
Water absorption, 24 hours (%) D 570 nil nil
Mold shrinkage - 1/8" specimen (in/in) D 955 0.011 0.008
Mechanical @ 73°F      
Tensile strength (psi) D 638 4,500 4,400
Elongation @ yield (%) D 638 4.0 3.0
Elongation @ break (%) D 638 8.0 6.0
Tensile modulus (kpsi) D 638 360 600
Flexural modulus, tangent (kpsi) D 790 462 750
Flexural strength (psi) D 790 6,100 8,000
Izod impact, notched (ft-lbs/in) D 256 0.95 0.88
Gardner impact, 1/2" tup (in-lbs) D 5420 6.0 4.0
Rockwell hardness (R-scale) D 785 96 108
Deflection temperature, 66psi (°F) D 648 260 290
Deflection temperature, 264psi (°F) D 648 180 240

* melt flow may be specified