ISO 1172 Prepregs, Molding Compounds and Laminates - Determination of Textile-Glass and Mineral Filling Content - Calcination Methods

Material Testing

ISO 1172 Prepregs, Molding Compounds and Laminates - Determination of Textile-Glass and Mineral Filling Content - Calcination Methods

The ISO 1172 standard, developed by the International Standards Organization (ISO), specifies two calcination methods for determining the textile glass and mineral filler content of glass-reinforced plastics:

ISO 1172 Prepregs, Molding Compounds and Laminates - Determination of Textile-Glass and Mineral Filling Content - Calcination Methods

Method A: Covers the requirements for the determination of textile glass content in the absence of mineral fillers.

Method B: Covers the requirements for determining the content of textile glass and mineral filler when both components are present.

This International Standard applies to the following material types:

  • Prepregs made of threads, cords, tapes or fabrics,
  • SMC, BMC and DMC molding compounds,
  • Textile-glass reinforced thermoplastic molding materials and granules,
  • Filled or unfilled textile-glass laminates made with thermoset or thermoplastic resins.

The ISO 1172 standard methods do not apply to types of reinforced plastics containing reinforcements other than textile glass, containing materials that are not completely combustible at the test temperature (e.g. based on silicone resins), mineral fillers that degrade at temperatures below the minimum calcination temperature.

For these materials, ISO 11667, Fibre-reinforced plastics - Molding compounds and prepregs - Determination of resin, reinforcing fiber and mineral filler content - Dissolution method can be used.

It gives two calcination methods for determining the textile-glass and mineral filler content of glass-reinforced plastics. Method A is used to determine the textile glass content when no mineral fillers are present; Method B is used when both components are present.

Among the services provided by our organization within the framework of material testing services, there are also ISO 1172 standard tests.

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