ISO 8257-2:2001
Plastics - Poly(methyl methacrylate) (PMMA) moulding and extrusion materials - Part 2: Preparation of test specimens and determination of properties

Standard No.

ISO 8257-2:2001

Release Date

2001

Published By

International Organization for Standardization (ISO)

Status

Be replaced

Replace By

ISO 8257-2:2001/Cor 1:2003

Latest

ISO 8257-2:2001/Cor 1:2003

Scope

1 This part of ISO 8257 specifies procedures for moulding test specimens of PMMA materials in a specified state, and methods for measuring their properties. Any property listed in this part of ISO 8257 and referred to in combina-tion with ISO 8257-1 shall be determined by the method referred to in this part of ISO 8257. 2 No values are quoted for these properties. Those required for the designation of PMMA materials for moulding and extrusion are given in ISO 8257-1. Other properties shall be determined by the appropriate methods referred to in this part of ISO 8257. 3 The values determined in accordance with this part of ISO 8257 will not necessarily be identical to those ob-tained using specimens of different dimensions and/or prepared by different procedures. They may also be influ-enced by colorants and other additives. The values obtained for the properties of a moulding depend on the moulding compound, the shape of test specimen, the test method and the state of anisotropy. The last-mentioned depends on the gating and the moulding conditions, for example temperature, pressure or injection rate. Any subsequent treat-ment must also be considered, for example conditioning or annealing. 4 The thermal history and the internal stresses of the specimens may strongly influence thermal and mechanical properties and resistance to environmental stress cracking, but exert less effect on the electrical properties, which mainly depend on the chemical composition of the moulding compound.

ISO 8257-2:2001 Referenced Document

• ISO 175:1999 Plastics - Methods of test for the determination of the effects of immersion in liquid chemicals
• ISO 178:1993 Plastics; determination of flexural properties
• ISO 179:1993 Plastics; determination of Charpy impact strength
• ISO 62:1999 Plastics - Determination of water absorption
• ISO 75-2:1993 Plastics; determination of temperature of deflection under load; part 2: plastics and ebonite

ISO 8257-2:2001 history

• 2001 ISO 8257-2:2001/Cor 1:2003 Plastics-Poly(methy1methacrylate) (PMMA) moulding and extrusion materials- Part 2: Preparationof test specimens and determination of properties
• 2001 ISO 8257-2:2001 Plastics - Poly(methyl methacrylate) (PMMA) moulding and extrusion materials - Part 2: Preparation of test specimens and determination of properties
• 1990 ISO 8257-2:1990 Plastics; poly(methyl methacrylate) (PMMA) moulding and extrusion materials; part 2: preparation of test specimens and determination of properties