ISO 7823-3:2021
Plastics — Poly(methyl methacrylate) sheets — Types, dimensions and characteristics — Part 3: Continuous cast sheets
This document specifies requirements for non-modified flat poly(methyl methacrylate) (PMMA) continuous cast sheets for general-purpose use. The sheets can be colourless or coloured, and can be transparent, translucent or opaque.
The thickness range of the sheets covered by document is 1 mm to 10 mm.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Composition
5 General requirements
5.1 Protective coverings
5.2 Appearance
5.2.1 Surface defects
5.2.2 Inclusion defects
5.2.3 Classification of defects
5.2.4 Distribution of defects
5.3 Colour
5.4 Dimensions
5.4.1 Length and width
5.4.2 Thickness
5.4.3 Tolerances for other sheet sizes
5.4.4 Conditions of measurement
5.5 Basic and other properties
5.5.1 Basic properties
5.5.2 Other properties
6 Test methods
6.1 General
6.1.1 Sampling
6.1.2 Conditioning and testing atmospheres
6.1.3 Preparation of test specimens
6.1.4 Specimen thickness
6.2 Appearance
6.3 Colour
6.4 Dimensions
6.5 Mechanical properties
6.6 Thermal properties
6.7 Flammability
6.8 Optical properties
6.9 Other properties
7 Retest and rejection
Annex A (normative) Determination of dimensional change on heating (shrinkage)
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Composition
5 General requirements
5.1 Protective coverings
5.2 Appearance
5.2.1 Surface defects
5.2.2 Inclusion defects
5.2.3 Classification of defects
5.2.4 Distribution of defects
5.3 Colour
5.4 Dimensions
5.4.1 Length and width
5.4.2 Thickness
5.4.3 Tolerances for other sheet sizes
5.4.4 Conditions of measurement
5.5 Basic and other properties
5.5.1 Basic properties
5.5.2 Other properties
6 Test methods
6.1 General
6.1.1 Sampling
6.1.2 Conditioning and testing atmospheres
6.1.3 Preparation of test specimens
6.1.4 Specimen thickness
6.2 Appearance
6.3 Colour
6.4 Dimensions
6.5 Mechanical properties
6.6 Thermal properties
6.7 Flammability
6.8 Optical properties
6.9 Other properties
7 Retest and rejection
Annex A (normative) Determination of dimensional change on heating (shrinkage)
Bibliography