Plast: allmänt

This document specifies test procedures for the acquisition and presentation of multipoint data which demonstrate the behaviour of plastics under the following environments:

—   prolonged exposure to heat;

—   liquid chemicals;

—   environmental stress cracking under a constant tensile stress;

—   artificial weathering. The tests are listed in order of increasing severity of the environment. By testing under the least severe environments first, it is possible to make informed judgements regarding whether tests under more severe conditions are worthwhile.

This document specifies the dimensions, the method of sampling, the preparation of the test specimens and the conditions for performing the tensile test in order to determine the short-term tensile welding factor. A tensile test can be used in conjunction with other tests (e.g. bend, tensile creep, macro) to assess the performance of welded assemblies, made from thermoplastics materials. The test is applicable to welded semi-finished products made from thermoplastics materials filled or unfilled, but not reinforced, irrespective of the welding process used.

The ISO 472 series defines terms used in the plastics industry, including terms and definitions appearing in the plastics standards of ISO/TC 61 and general terms and definitions of polymer science used in all aspects of plastics technology.

This document defines terms used in the plastics standards of ISO TC61/SC11 Plastics Products and relevant terms applied in the area of welding (including solvent welding) and thermal staking.