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Fiber reinforced polypropylene composite body panels

A technology of fiber reinforcement and composite materials, applied in the field of body panels, can solve the problems of affecting the dispersion of PET fibers, affecting the mechanical properties of matrix polymers, and affecting the mechanical properties of PET fibers

Inactive Publication Date: 2008-05-14
EXXON RES & ENG CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

More specifically, the extrusion compounding screw configuration may affect the dispersion of PET fibers within the PP matrix, and the extrusion compounding processing conditions may affect not only the mechanical properties of the matrix polymer but also the mechanical properties of PET fibers

Method used

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  • Fiber reinforced polypropylene composite body panels
  • Fiber reinforced polypropylene composite body panels
  • Fiber reinforced polypropylene composite body panels

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-8

[0092] Various amounts of PP3505G were mixed with 0.25" long polyester fibers obtained from Invista Corporation in a Haake single screw extruder at 175°C. The strands exiting the extruder were cut into 0.5" lengths and injected using a Boy 50M ton The molding machine was injection molded at 205°C into a mold kept at 60°C. Injection pressure and nozzle pressure were maintained at 2300 psi. Samples were molded according to ASTM D3763 geometry and tested for instrumented impact under standard automotive conditions for interior components (25 lbs at 15 MPH at -29°C). In Table 1 the total energy absorbed and the impact results are given.

[0093] Table 1

[0094] Examples#

[0095] *Examples 1-6: Samples did not break or split due to impact, no fragments from test specimens.

Embodiment 7

[0096] **Example 7: Fragments of the sample fell off due to impact.

Embodiment 8

[0097] ***Example 8: The sample was completely broken due to the impact.

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PUM

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Abstract

The invention provides a fiber reinforced polypropylene composite vehicle body panel. The vehicle body panel includes a substrate molded from a composition comprising at least 30 wt% polypropylene based resin, from 10 to 60 wt% organic fiber, from 0 to 40 wt% inorganic filler, and optionally lubricant (typically present at from 0 to 0.1 wt%), based on the total weight of the composition, the substrate having an outer surface and an underside surface. A process for producing a body panel for a vehicle is also provided. The process includes the step of molding a composition to form the body panel for a vehicle, the body panel having at least an outer surface and an underside surface, wherein the composition comprises at least 30 wt% polypropylene, from 10 to 60 wt% organic fiber, from 0 to 40 wt% inorganic filler, and optionally lubricant (typically present at from 0 to 0.1 wt%), based on the total weight of the composition.

Description

[0001] Inventor: Arno1d Lustiger [0002] Jeffrey Valentage [0003] Cross References to Related Applications [0004] This application claims priority to U.S. Patent Application Serial No. 11 / 387,502, filed March 23, 2006, which is an extension of U.S. Patent Application Serial No. 11 / 318,363, filed December 23, 2005 continuation-in-part of U.S. Patent Application Serial No. 11 / 318,363, which is a continuation-in-part of U.S. Patent Application Serial No. 11 / 301,533 filed December 13, 2005, and claims the U.S. Provisional Application Serial No. filed May 17, 2005 No. 60 / 681,609, the contents of which are hereby incorporated by reference. field of invention [0005] The present invention generally relates to body panels and the like prepared from fiber reinforced polypropylene compositions and methods of making such panels. The invention also relates to the molding of panels produced from fiber reinforced polypropylene compositions. Background of the invention [0006] ...

Claims

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Application Information

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IPC IPC(8): C08J5/04B60J5/04B29C45/00C08L23/10B60R13/02
Inventor A·勒斯蒂吉尔J·瓦伦塔格
Owner EXXON RES & ENG CO