Glass Reinforced Polypropylene

Incorporation of glass fibers in polypropylene referred to as either glass reinforced or glass filled polypropylene yields compounds with the maximum increase in strength over neat polypropylene.  Washington Penn Plastic Co. supplies a variety of the short (nominal 4 mm) glass length polypropylene compounds that range in color, glass content, flame retardant capability, and glass compounds that demonstrate less warp.

In general, glass reinforced polypropylene compounds are used in structural components that require higher levels of stiffness, strength and heat resistance and are predominantly used in a number of Automotive, Appliance and Furniture applications.  Washington Penn Plastic Co. has successfully completed a number of programs that have displaced either glass filled nylons or long glass polypropylene materials that have resulted in significant cost savings to the customer.  

Washington Penn Plastic Co. has flame retardant (FR) glass reinforced polypropylene compounds that are listed to UL94 V0 and 5VA.  In response to legislation regarding the use of DecaBDE (Decabromodiphenyl Ether), we offer solutions using Non-Halogenated Flame Retardants Systems. 

Nominal Physical Property Expectations for Glass Reinforced PP

Incorporation of glass fiber greatly increases the stiffness, as measured by Flex Modulus and tensile strength properties of polypropylene relative to both neat and talc filled PP.

Resistance to heat, as measured by heat deflection temperature (@ 66 psi), and impact strength properties, as measured by notched izod (room temperature) are also increased in glass filled compounds relative to unfilled or talc filled polypropylene.