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Composite structural products

A technology for composite structures and products, applied in the field of composite structure products containing continuous fiber tensile elements and/or open mesh woven elements, which can solve the problems of non-conformity, expensive filling products, etc.

Active Publication Date: 2018-09-14
INTEGRATED COMPOSITE PROD INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While serving certain purposes in terms of optimizing finished product quality, conventional filled products have proven to be commercially expensive and otherwise do not serve their purpose in terms of weight, impact properties and strength

Method used

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  • Composite structural products
  • Composite structural products
  • Composite structural products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Example 1 - Composite Parts with Tensile Parts

[0055]A composite part is formed having opposing first and second planar surfaces and rib elements extending from the second surface. The composite part was formed from polypropylene and 40 wt% long fiber dispersion (RTP80107, available from RTP Company). The fiber dispersion had an average length of about 12 mm and an average diameter of about 20 microns. The tensile part is embedded within the composite part rib and along its entire length. Tensile parts are continuous fiber bundles or elements formed from thousands of parallel and coextensive glass fibers held together with polypropylene resin. The continuous fiber bundle is 60 wt% glass fibers. The diameter of the continuous fiber bundle is about 0.1 inches or about 2500 microns. The composite part weighed 11.7 g.

[0056] Comparative parts were formed using polypropylene and 40 wt% long fiber dispersion (RTP 80107 from RTP Company) within the rib element or with...

Embodiment 2

[0060] Example 2 - Composite part with impact part

[0061] Composite parts were formed by injection molding polypropylene and 40 wt% long fiber dispersion (RTP 80107, available from RTP Company) with open mesh woven elements in a 4 inch diameter mold. The fiber dispersion had an average length of about 12 mm and an average diameter of about 20 microns. The impact part is a 2oz / yd 2 Open mesh weave element with 8 fiber bundles / inch fiberglass mesh (Saint-Gobain Adfors, France).

[0062] A comparative part was formed using polypropylene and 40 wt% long fiber dispersion (RTP 80107, available from RTP Company) without an impact part (open mesh woven element).

[0063] result

[0064] Impact strength tests (Instrumented Dynatup test) were performed on both the composite part of Example 2 and the comparative part of Example 2. Compared to the comparative part of Example 2, the composite part withstands 2-3 times the impact force before breaking.

[0065] Further samples were f...

Embodiment 3

[0068] Example 3 - Composite Parts with Tensile Parts and Impact Parts

[0069] Such as Figure 1-3 Stencils are used as shown. Die measures 8 inches wide by 18 inches long and 1 inch thick. Five ribs are parallel to the width and five ribs are parallel to the length. The width ribs are perpendicular to the length ribs.

[0070] Polypropylene and either 40 wt% long fiber dispersion (RTP 80107 from RTP Company) or 30 wt% long fiber dispersion (RTP 80105 from RTP Company) or 20 wt% long fiber dispersion (RTP 80103 from RTP Company) were used , forming a composite article (with stretched components). A tensile member (described in Example 1) was embedded within each rib element. The comparative examples did not include tensile members.

[0071] result

[0072] Table 2 below reports the results of the bend test (three point bend test over a 15" span).

[0073] Table 2

[0074] Material Description

Bend test (pounds until failure)

RTP 80107 40% Fiber

...

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Abstract

A composite structural article (10, 100, 210) includes a polymeric body (20) having a first major surface (22) and an opposing second major surface (24). The composite structure includes a continuous fiber element (30) extending along the side length of the rib element (26) and embedded therein, and / or a texture on the first major surface or the opposing second major surface (24) Embedded and coplanar open mesh weaving elements (40) within the surface (22).

Description

[0001] related application [0002] Pursuant to 35 U.S.C. §119(e), this application claims the benefit of U.S. Provisional Patent Application No. 61 / 857,806, filed July 24, 2013, entitled COMPOSITE STRUCTURAL ARTICLE, which is hereby incorporated by reference in its entirety. Background technique [0003] The physical properties of thermoplastic polymers can be modified by the incorporation of filler materials, such as glass fibers. Incorporation of glass fibers into polymer products beneficially affects resin properties such as tensile strength, stiffness, dimensional stability and resistance to creep and thermal expansion. A conventional method of producing such articles is injection or compression molding of standard, pre-compounded glass fiber filled polymers. While satisfying certain objectives in terms of optimizing finished product quality, conventional filled products have proven to be commercially expensive and otherwise not fit their purpose in terms of weight, impa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D99/00B29C70/08
CPCB29D99/0014B29C70/083Y10T428/24355Y10T428/24479Y10T428/2457Y10T428/24612B29K2101/12B29K2105/0809B29K2105/101B29C45/0005B32B3/30B32B5/028
Inventor R·C·豪雷D·J·马祖拉
Owner INTEGRATED COMPOSITE PROD INC
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