Composite polymers

A mixture, reinforced composite technology, applied in the direction of synthetic resin layered products, chemical instruments and methods, layered products, etc., can solve the problems of mechanical properties and matrix toughness reduction, reduction, density reduction, etc., to achieve high toughness and high strength. , the effect of low density

Inactive Publication Date: 2009-02-18
ASHLAND LICENSING & INTPROP LLC
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  • Claims
  • Application Information

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Problems solved by technology

Although these techniques can significantly reduce the density without causing a significant decrease in SQ, the exterior panel parts molded by this method exhibit significant mechanical properties and matrix toughness relative to those exhibited by existing high-density molding compounds. reduction, which is unacceptable to the industry
To make matters worse, the use of glass microspheres increased the number of part defects due to "paint blowouts," which were significantly reduced in many parts produced by the newly introduced high-density systems

Method used

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  • Composite polymers

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Embodiment Construction

[0019] Standard composite parts made from thermoset polymers are widely used in the transportation industry. Such composite formulations typically contain high levels of high-density inorganic fillers, namely CaCO 3 , whose content is >180 parts per 100 parts of organic resin to reduce curing shrinkage of the formulation. These high filler contents together with fiber reinforcements result in molded composite panels with a rather high density, i.e. ≥ 1.9 g / cm 3 (g / cc), which is higher than about 1.2 g / cm of its polymer component 3 (g / cc) density.

[0020] There is currently a high demand in the transportation industry for low density composite exterior surface components (specific gravity 70% by weight of high-density fillers and fiber reinforcements and thus have >1.9 g / cm 3 Density.

[0021] Continued increases in fuel prices and reductions in the "greenhouse gas" known as carbon dioxide (CO 2 ) creates requirements that make increased energy efficiency very reasonable ...

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Abstract

The present disclosure relates generally to reinforced composite resin formulations used for molding body panels for transportation vehicles. Particularly, but not by way of limitation, the disclosure relates to low-density thermosetting composite molding compounds used to maid body panels and having a density of less than 1.6 grams / cubic centimeter and excellent surface smoothness without the use of hollow glass microspheres.

Description

technical field [0001] The present invention generally relates to cosmetic body panels having a Class A surface quality prepared from low density composites of polymers. Background technique [0002] The information given below is not admitted to be prior art to the present invention, but is given only to assist the reader's understanding. [0003] As energy consumption continues to increase, the transportation industry has a strong need to reduce vehicle weight to promote fuel savings. This requirement to produce lightweight vehicle components opens the door to the use of low-density metals and polymers. Polymer materials are widely used to replace steel parts in vehicles due to their light weight, ability to be molded into complex shapes, flexibility in part curing and design, corrosion resistance, high strength and resistance to damage. In particular, thermoset composites are widely used in the manufacture of structural (interior) and exterior surface (exterior) body pa...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): B32B27/00
CPCC08K9/04C08K3/34B32B27/00C08L67/00
InventorH·特瓦尔多斯卡-巴克斯特M·J·萨姆纳D·H·费希尔T·A·塔夫茨
OwnerASHLAND LICENSING & INTPROP LLC