Accession Number:

ADA359280

Title:

Methods for Reducing Volatile Organic Content in Fabric Waterproof Coatings.

Descriptive Note:

Final rept. May-Nov 93,

Corporate Author:

CAPE COD RESEARCH INC EAST FALMOUTH MA

Personal Author(s):

Report Date:

1994-03-01

Pagination or Media Count:

48.0

Abstract:

Fabrics for rainwear and outdoor equipment traditionally have been rendered waterproof by coating with solventborne rubber solutions, solventborne polyurethanes and vinyl plastisols. Regulatory pressure for environmental protection and worker safety has become a potent driving force in eliminating volatile organic solvents and toxic additives from commercial coating products. A variety of low-solvent coating technologies are being introduced to replace the traditional solvent-based products. These include high solids formulation, solventless UV and electron beam curing systems, powder coatings and supercritical, CO2 -reduced paints. The benefits and limitations of these coating technologies were compared with respect to their applicability to fabric waterproofing. In addition, a novel acrylated surfactant was synthesized and employed in the formulation of UV-curing waterborne coatings for textile waterproofing. The application methods and cure characteristics of the solvent-free formulations are described. Physical properties of cured coating films including tensile strength, percent elongation, water absorption, water drop contact angle, and adhesion to common fabrics were measured and compared to those obtained using a commercial waterborne waterproofing system. One formulation produced cured films having low water absorption, tenacious adhesion to polyester fabric and surface hydrophobicity properties approaching those of polyethylene.

Subject Categories:

  • Coatings, Colorants and Finishes
  • Protective Equipment
  • Toxicology
  • Organic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE