BS EN ISO 6272-1:2011
Paints and varnishes. Rapid-deformation (impact resistance) tests - Falling-weight test, large-area indenter
Paints and varnishes. Rapid-deformation (impact resistance) tests - Falling-weight test, large-area indenter
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Дата публикации:
- 31 августа 2011 г.
- ICS:
- 87.040
- Технический комитет:
- CEN
- SKU:
- BS EN ISO 6272-1:2011
Abstract
1 Scope This part of ISO 6272 describes a method for evaluating the resistance of a dry film of paint, varnish or related product to cracking or peeling from a substrate when it is subjected to a deformation caused by a falling weight, with a 20-mm-diameter spherical indenter, dropped under standard conditions.
NOTE The terms “impact” and “impact resistance” are used in the title and text of this part of [ISO 6272](/search?q=ISO%C2%A06272), but an important characteristic of the apparatus used is that it should produce rapid deformation rather than a true impact.
The method described can be applied
— either as a pass/fail test, the test being carried out from one drop height and with a specified mass, so as to test compliance with a particular specification;
— or as a classification test, to determine, by gradually increasing the drop height and/or the mass, the minimum mass and/or drop height for which the coating cracks or peels from its substrate.
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