摘要:
The present invention includes aqueous coating compositions adapted to coat a plurality of sized glass fibers, glass fibers coated with the same and composites reinforced with the coated glass fibers. The coating composition includes (a) a polysiloxane having: (1) an alkyl substituent attached through a carbon atom directly to a silicon atom of the polysiloxane; (2) an alkoxy substituent attached through a carbon atom directly to a silicon atom of the polysiloxane, the alkoxy substituent having an alkyl group, an alkyl ether group and a terminal group selected from the group consisting of hydrogen and an alkoxy group having about 1 to about 8 carbon atoms; and (3) endblocking groups independently selected from the group consisting of a phenyl group, an alkyl group having about 1 to about 20 carbon atoms and combinations thereof, wherein the polysiloxane is essentially free of silicon-bonded hydroxy groups and alkoxy groups attached through an oxygen atom directly to a silicon atom of the polysiloxane, and (b) zero to less than about 50 weight percent on a total solids basis of a film-forming material capable of forming a uniform continuous coating on the glass fibers.
摘要:
A method of preparing a reinforcing structure for use in manufacture a pultruded part where the reinforcing structure is pulled through a pultrusion die in a continuous longitudinal pull direction. The method includes arranging a plurality of first reinforcing fibers in a transverse direction and attaching a permeable transport web of staple fibers to the first reinforcing fibers such that the portion of the first reinforcing fibers oriented in the direction transverse comprises at least 30% of a volume of materials comprising the reinforcing structure.
摘要:
A vacuum molding-compatible mat including about 10 weight percent to about 99 weight percent glass monofilaments having a mean average length ranging from about 5 to about 150 millimeters and coated with a filament coating composition which is compatible with a thermosetting matrix material for forming a vacuum molded composite; and glass fiber strands having a mean average length ranging from about 5 to about 150 millimeters and coated with a strand coating composition which is compatible with the thermosetting matrix material for forming the vacuum molded composite; wherein the mat has a mat surface weight greater than about 200 grams per square meter, the glass monofilaments and glass fiber strands are essentially uniformly distributed throughout the mat and at least a portion of the glass monofilaments are entangled with at least a portion of the glass fiber strands.
摘要:
A method of preparing a reinforcing structure for use in manufacture a pultruded part where the reinforcing structure is pulled through a pultrusion die in a continuous longitudinal pull direction. The method includes arranging a plurality of first reinforcing fibers in a transverse direction and attaching a permeable transport web of staple fibers to the first reinforcing fibers such that the portion of the first reinforcing fibers oriented in the direction transverse comprises at least 30% of a volume of materials comprising the reinforcing structure.
摘要:
A simplified aqueous sizing composition utilizing a variety of components achieves improved stability, wettability and strength characteristics. The composition utilizes one or more aqueous, soluble, dispersible or emulsifiable bisphenol A type polyester film forming polymers with an epoxy containing film forming copolymer compatible with and soluble in the matrix polymer. One or more organo-silane coupling agents are also utilized. The sizing composition preferably includes a single nonionic surfactant in conjunction with a cationic amidated polyamine lubricant. One or more anti-static agents, generally cationic organic quaternary ammonium salts having one or more alkoxy moieties, are utilized in an effective anti-static amount. An anti-foaming agent may also be utilized for the prevention or suppression of foam during the mixing process. The improved stability and wettability characteristics of the aqueous sizing composition are preferably achieved through the use of a single epoxidized surfactant. Compositions formed from this surfactant are effective at one-half the surfactant level and retain their static emulsion stability for 48 hours or more. This is accompanied by a 50 percent improvement in dry sliver abrasion with no apparent negative effects on the mechanical properties of the resultant glass fiber.
摘要:
A unique composition of matter useful for treating glass fibers is claimed containing a film forming polymer, an organo coupling agent, a filament lubricant and an allylic compound, such as triallylcyanurate. The glass fibers carrying the dried residue of an aqueous chemical treating composition containing the unique chemical treating composition can be used to prepare a thermosetting plastic composite having improved strength. The composites so prepared are useful in making clear, translucent panels of improved weatherability and pultrusion profiles having higher strengths, such as compressive, shear and flexural strengths.
摘要:
A method of preparing a reinforcing structure for use in manufacture a pultruded part where the reinforcing structure is pulled through a pultrusion die in a continuous longitudinal pull direction. The method includes arranging a plurality of first reinforcing fibers in a transverse direction and attaching a permeable transport web of staple fibers to the first reinforcing fibers such that the portion of the first reinforcing fibers oriented in the direction transverse comprises at least 30% of a volume of materials comprising the reinforcing structure.
摘要:
A method of making a pultruded part having a uniform cross-section using a novel reinforcing mat. The method comprises orienting a plurality of longitudinal rovings along a longitudinal axis of a pultrusion die; providing a reinforcing structure comprising a permeable transport web of staple fibers attached to a plurality of first reinforcing fibers oriented so that the portion of the first reinforcing fibers oriented in a direction transverse to the longitudinal axis comprises at least 40% of a volume of materials comprising the reinforcing structure; shaping the reinforcing structure to generally conform with a profile of the pultrusion die; combining a resin matrix with the longitudinal rovings and the reinforcing structure in the pultrusion die so that the longitudinal rovings and the reinforcing structure are substantially surrounded by the resin matrix; at least partially curing the resin matrix in the pultrusion die; and pulling the pultruded part from the pultrusion die.
摘要:
The present invention provides a needled mat adapted to reinforce a thermosetting matrix material to form a composite, composites formed therefrom, and methods related thereto. The needled mat includes a primary layer of a plurality of unidirectional continuous glass fiber strands coated with a composition which is compatible with the thermosetting matrix material and a secondary layer positioned thereon of a plurality of randomly oriented, generally continuous and/or chopped glass fiber strands coated with a composition which is compatible with the thermosetting matrix material. The mat has a total surface weight ranging from about 1300 to about 11,500 grams per square meter.
摘要:
A simplified aqueous sizing composition utilizing a variety of components achieves improved stability, wettability and strength characteristics. The composition utilizes one or more aqueous, soluble, dispersible or emulsifiable bisphenol A type polyester film forming polymers with an epoxy containing film forming copolymer compatible with and soluble in the matrix polymer. One or more organo-silane coupling agents are also utilized. The sizing composition preferably includes a single nonionic surfactant in conjunction with a cationic amidated polyamine lubricant. One or more anti-static agents, generally cationic organic quaternary ammonium salts having one or more alkoxy moieties, are utilized in an effective anti-static amount. An anti-foaming agent may also be utilized for the prevention or suppression of foam during the mixing process. The improved stability and wettability characteristics of the aqueous sizing composition are preferably achieved through the use of a single epoxidized surfactant. Compositions formed from this surfactant are effective at one-half the surfactant level and retain their static emulsion stability for 48 hours or more. This is accompanied by a 50 percent improvement in dry sliver abrasion with no apparent negative effects on the mechanical properties of the resultant glass fiber.