This standard specifies the principle, test apparatus, specimen, test procedures, test result and test report of hardness determination of reinforced plastics by means of a Barcol impresser.
This standard is applicable to the determination of Barcol hardness of reinforced plastic and its products; the Barcol hardness of non-reinforced plastic and its products may also refer to; but not to those materials with the Barcol hardness less than 20.
2 Normative References
The following standards contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of the document is applicable. For undated references, the latest edition applies. GB/T 1446-2005 The Generals of Test Methods for Properties of Fiber-reinforced Plastics
3 Principle
Barcol hardness is a kind of indentation hardness. It is the hardness characterized with embedded depth of specimen that is embedded with specific pressure head under the pressure effect of standard load spring.
