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Fiber size, sized reinforcements, and articles reinforced with such reinforcements

a technology of fibers and reinforcements, applied in the field of fiber size compositions, can solve problems such as fiber breakage, and achieve the effect of promoting fiber adhesion

Inactive Publication Date: 2007-04-12
OCV INTELLECTUAL CAPITAL LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a fiber-size composition that is useful for preventing fuzzing and improving mechanical properties of glass fibers in composite articles. The composition contains a polyvinylpyrrolidone film former, a coupling agent, a lubricant, and optional additives such as wetting agents, lubricants, surfactants, antioxidants, pigments, antistats, fillers, flame retardants, and antioxidants. The composition can be applied to glass fibers early in the formation process to protect them from abrasion and breakage. The fiber-size composition can be used in a wide variety of resin matrices and can improve processing characteristics of the resin. The invention also provides a method for preparing reinforcing fibers and using them to form a composite article. The reinforced resin composite incorporates the fiber-size composition and has improved mechanical properties.

Problems solved by technology

This is a result of the film-former forming a brittle film which leads to fiber breakage as it crosses contact points in the manufacturing operation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

examples

[0049] The size composition components according to embodiments of the present invention are set forth in Tables 1-5.

TABLE 1% byLbs. / 100Actual Solidsweightgallonof% ActiveasasTotal Size onMaterialSolids(a)receivedreceivedthe GlassA1100 Silane(b)58.0001.21010.0790.04PVP K15(c)100.0005.06542.1910.32Peg 400M0(d)100.0002.17118.0840.14Emery 6760L(e)12.5000.4994.1570.0039Acetic Acid100.0000.3302.749D.M. Water0.00090.725755.7390.50 = Totalsolids %

(a)% Active Solids used to calculate predicted size mix solids.

(b)A-1100 is an amino-propyl-triethoxy-silane coupling agent.

(c)PVP K15 is a low molecular weight polyvinylpyrrolidone film former

(d)PEG 400MO is a low molecular weight polyethylene glycol lubricant

(e)Emery 6760L is a polyethyleneimine polyamide salt lubricant

[0050]

TABLE 2% byLbs. / 100Actual Solidsweightgallonof% ActiveasasTotal Size onMaterialSolids(a)receivedreceivedthe GlassA1100 Silane(b)58.0001.45212.0950.05PVP K15(c)100.0006.07850.6300.38Peg 400M0(d)100.0002.60521.7000.16Em...

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Abstract

The present invention relates to fiber-size compositions for coating glass or other reinforcing fiber materials that are used in the manufacturing of composites. The fiber-size composition contains at least about 4% by weight of a polyvinylpyrrolidone film former, at least one lubricant and a coupling agent. The sizing composition gives the fibers desirable properties such as high strength, improved flexibility, fuzz formation resistance, and fiber smoothness and softness.

Description

TECHNICAL FIELD AND INDUSTRIAL APPLICABILITY OF THE INVENTION [0001] The present invention relates to fiber-size compositions for coating glass or other reinforcing fiber materials that are used in the manufacturing of composites. The sizing composition gives the fibers desirable properties such as high strength, improved flexibility, fuzz formation resistance, and fiber smoothness and softness. BACKGROUND OF THE INVENTION [0002] Glass fibers are useful in a variety of technologies. For example, glass fibers are commonly used as reinforcements in polymer matrices to form glass fiber reinforced plastics or composites. Glass fibers have been used in the form of continuous or chopped filaments, strands, rovings, woven fabrics, nonwoven fabrics, meshes, and scrims to reinforce polymers. It is known in the art that glass fiber reinforced polymer composites possess higher mechanical properties compared to unreinforced polymer composites, provided that the reinforcement fiber surface is su...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): D02G3/00
CPCC03C25/26C08J5/08C08J2377/00C08L75/04Y10T428/2933D06M15/53D06M15/564D06M15/61D06M2200/40D06M15/3562
Inventor SCHWEIZER, ROBERT A.ANTLE, JEFFREY L.HOLMAN, DONALD R.SHIPP, DAVID L.
Owner OCV INTELLECTUAL CAPITAL LLC
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