Name: AS 2498.8-1991 - Methods of testing rigid cellular plastics Determination of water absorption
Brand: Standards Australia

Methods of testing rigid cellular plastics Determination of water absorption

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Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English

Published date

11-02-1991

Publisher

Standards Australia

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1 - AS 2498.8-1991 METHODS OF TESTING RIGID CELLULAR PLASTICS - DETERMINATION OF WATER ABSORPTION
1 - PREFACE
1 - FOREWORD
1 - METHOD
1 - 1 SCOPE
1 - 2 APPLICATION
1 - 3 REFERENCED DOCUMENT
1 - 4 PRINCIPLE
2 - 5 APPARATUS
2 - 5.1 Balance
2 - 5.2 Underwater weighing jig
2 - 5.3 Immersion tank
2 - 5.4 Test specimen rack
2 - 5.5 Balance platform
2 - 5.6 Forced-air circulating oven
2 - 5.7 Dessicator
2 - 5.8 Low-permeability plastic film
2 - 5.9 Measuring instruments
2 - 6 TEST SPECIMENS
2 - 6.1 Dimensions
2 - 6.2 Preparation
2 - 6.3 Number
2 - 6.4 Conditioning
2 - 7 PROCEDURE
3 - 8 CORRECTION FOR SWELLING AND CUT SURFACE CELLS
3 - 8.1 Procedure A (uniform swelling)
3 - 8.2 Procedure B (non-uniform swelling)
4 - 9 CALCULATION OF RESULTS
4 - 9.1 Original volume
4 - 9.2 Surface area
4 - 9.3 Percentage water absorbed
5 - 10 REPORT
6 - APPENDIX A - DETERMINATION OF AVERAGE CELL DIAMETER
6 - A1 SCOPE
6 - A2 PRINCIPLE
6 - A3 APPARATUS
6 - A3.1 Slicer
6 - A3.2 Slide assembly
6 - A3.3 Projector
6 - A4 SPECIMENS
6 - A4.1 Number of specimens
6 - A4.2 Dimensions
6 - A5 PROCEDURE
6 - A6 CALCULATIONS
6 - A7 DERIVATION OF RELATIONSHIP BETWEEN CELL DIAMETER AND CELL CHORD LENGTH

Specifies a method for determining the water absorption of rigid cellular plastics by measuring the change in buoyant force resulting from immersion in distilled water.

Committee	PL/16
DocumentType	Standard
ISBN	0 7262 6426 1
Pages	8
ProductNote	Reconfirmed 14/08/2020. This standard has been reconfirmed in Australia in 2020 and remains current in New Zealand. Reconfirmation Notice 14/08/2020
PublisherName	Standards Australia
Status	Current
Supersedes	DR 88202

This Method sets out a method for determining the water absorption of rigid cellular plastics by measuring the change in buoyant force resulting from immersion in distilled water.NOTES:1 Some materials may absorb significant additional amounts of water when immersed for longer than 96 h, or under a greater hydrostatic head.2 If a full assessment of the water absorption characteristics of a rigid cellular plastics is required, it is essential to make measurements over a range of immersion periods and plot a graph of water absorption against time.

Standards	Relationship
ISO 2896:1987	Identical

First published AS 2498.8-1991.

AS 2498.2-1993

Methods of testing rigid cellular plastics Determination of linear dimensions (Reconfirmed 2020)

AS 1366.1-1992	Rigid cellular plastics sheets for thermal insulation Rigid cellular polyurethane (RC/PUR) (Reconfirmed 2018)
AS 1366.4-1989	Rigid cellular plastics sheets for thermal insulation Rigid cellular polystyrene - Extruded (RC/PS-E) (Reconfirmed 2018)
AS 1366.2-1992	Rigid cellular plastics sheets for thermal insulation Rigid cellular polyisocyanurate (RC/PIR) (Reconfirmed 2018)
AS 1366.3-1992	Rigid cellular plastics sheets for thermal insulation Rigid cellular polystyrene - Moulded (RC/PS - M)

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AS 2498.8-1991

Methods of testing rigid cellular plastics Determination of water absorption

Table of Contents

Abstract

General Product Information

Scope

International Equivalents

History

Standards Referenced By This Book

Standards Referencing This Book

Industry

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