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Spectadur PB40MS Rice Husk Blend


injection molding

 general description

Spectadur PB40MS grades are advanced compounds that deliver enhanced strength and stiffness values. The material is UV/AO stabilized.
Standard grades are built on 40 w.-% mechanically extracted (no chemicals used) rice husk, taken directly from a local rice mill. Rice husk replaces 40% of virgin PP. Plants absorb atmospheric carbon dioxide (CO2) as they grow. Using biomass like rice husk in a direct form to create products turn these constitutes into an effective CO2 storage resulting into a more permanent removal of CO2 from the atmosphere.
Part wall-thickness shall be greater than 2.5 mm.
All Spectadur grades are delivered in natural, speckled color; they can be delivered according to customer color specifications or can be blended with any traditional color masterbatch during part manufacturing.

 basic characteristics

biomass blend

compound base


rice husk

> 60% bio-based

compound color

natural, speckled



general purpose, non-food contact, medium to thick wall-thickness

 technical data (TDS)


0.99 g/cm3

MFI (190°C/2.16 kg)

g/10 min

HDT-B (@ 0.46 MPa)

140 °C

melting point

162 °C

tensile strength 

32.8 MPa

tensile modulus


50.8 MPa

flexural strength

2.4 GPa

flexural modulus

6.4 %

elongation @ yield 

elongation @ break 

6.8 %

shore hardness

impact IZOD (notched)

21.3 J/m

material shrinkage

0.7 %

Test Methods: ASTM D1238, ASTM D648, ASTM D638, ASTM D790A, ASTM D638, ASTM D256, ASTM D2240; typical values; all mechanical properties as per ASTM D638 Type I specimen, injection molded in accordance with AST; D4101.

products made with

Spectadur PB40MS Rice Husk Blend

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