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Liquid binder composition for binding fibrous materials

A technology of fiber materials and bonding fibers, used in fiber processing, fabrics, textiles, etc.

Active Publication Date: 2015-08-26
CYTEC TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are commercially available adhesives such as solvent-based adhesives as well as those in powder form, each type has disadvantages

Method used

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  • Liquid binder composition for binding fibrous materials
  • Liquid binder composition for binding fibrous materials
  • Liquid binder composition for binding fibrous materials

Examples

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example

[0095] The following examples are provided to further illustrate exemplary adhesive compositions and methods for their preparation, but should not be construed as limiting the invention, which is described in the appended claims.

example 1

[0097] Liquid adhesive compositions were prepared based on the compositions shown in Table 1. All amounts are in weight percent (wt %).

[0098] Table 1. Liquid Adhesive Compositions

[0099]

[0100] The anionic surfactants (alkaryl sulfonates) are based on chain-extending ethoxylated natural fatty diacids. The poloxamer nonionic surfactant is an AB block copolymer of polyethylene oxide (PEO) and polypropylene oxide (PPO), and the average molecular weight is in the range of 8000-18000Da. The poloxamine nonionic surfactant is an alkoxylated aliphatic diamine having an average molecular weight of about 18000-25000 Da.

[0101] In terms of non-ionic surfactants, although the polyethylene oxide block has hydrophilic properties, the polypropylene oxide block ensures strong hydrophobic properties and better affinity for the adhesive composition, thereby improving dispersion stability.

[0102] The liquid adhesive composition is prepared by dissolving the thermoplastic polyme...

example 2

[0110] About 200 gsm of polyester seamed unidirectional non-crimp fabric (Saertex, Germany) was dip-coated with the adhesive composition described in Example 1.

[0111] For comparison purposes, the same sheet of unidirectional non-crimp fabric was also dip-coated with some commercially available adhesives. FILCO 8004 (EP1) and 345HP (EP2) are two aqueous epoxy resin emulsions with solids contents of 63% and 53% respectively (available from COIM Italy). HYDROSIZE PA845 (PA1) and U2022 (PU1) are aqueous 23% solids polyamide 4,6 and 59% solids polyurethane dispersions respectively (available from Michelman, US). NEOXIL NX962D (EP3) is an aqueous 54% solids bisphenol-A based epoxy resin emulsion (available from DSM).

[0112] All adhesive coated fabrics were dried at 100°C for 3 minutes and further dried in a 130°C oven for 4 minutes.

[0113] The adhesive-coated fabrics were evaluated for drapability, abrasion resistance, shrinkage, and self-adhesive ability.

[0114] Drapabi...

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Abstract

A liquid binder composition for binding fibrous materials in the fabrication of resin-infusible preform is disclosed. The binder composition is an aqueous dispersion containing (a) one or more multifunctional epoxy resins, (b) at least one thermoplastic polymer, (c) one or more surfactants selected from anionic surfactants, nonionic surfactants, and combinations thereof, (d) water, and is essentially free of organic solvents. Also disclosed is an emulsification process for producing the liquid binder composition.

Description

Background technique [0001] Fiber-reinforced polymer composites have been used to construct load-carrying items typically in the marine, automotive, aerospace, and construction industries. These composites typically contain fiber reinforcements such as glass fibers and carbon fibers embedded in a cured matrix resin. [0002] Traditionally, fiber-reinforced polymer composites are made by laminating, molding, and curing prepreg sheets of resin-impregnated fibers. The resin content in the prepreg is high, typically 20% to 50% by weight. Control the properties and quality of prepregs to control toughness, strength, flexibility, etc. Prepreg sheets can be cut to smaller sizes for lamination in the structure of a given article. [0003] In recent years, resin infusion techniques have been used to fabricate complex shaped structures that would otherwise be difficult to fabricate using conventional prepreg techniques. Resin infusion techniques include resin transfer molding (RTM),...

Claims

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Application Information

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IPC IPC(8): C08L63/00D06M15/00
CPCD04H5/04Y10T442/2738C08L63/00Y10T442/60Y10T442/30D06M15/55C08L51/00C08L81/06C08L53/00C08L101/00
Inventor 卡梅隆·卢卡·瑞斯塔西亚威廉姆·杰卡布斯杰拉尔德·霍彼旭多米尼克·蓬索尔
Owner CYTEC TECH CORP
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