BS ISO 21844:2018 pdf download – Cellular plastic — Cellulose foam thermal insulation — Material specification This document specifies material requirements and identifies the test methods to be used to determine these requirements for cellulose foam for thermal insulation for buildings and other applications. There are four categories of material characterized by the density of the material. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 844, Rigid cellular plastics — Determination of compression properties ISO 845, Cellular plastics and rubbers — Determination of apparent density ISO 1209-1, Rigid cellular plastics — Determination of flexural properties — Part 1: Basic bending test ISO 1663, Rigid cellular plastics — Determination of water vapour transmission properties ISO 2796, Cellular plastics, rigid — Test for dimensional stability ISO 2896, Rigid cellular plastics — Determination of water absorption ISO 8301, Thermal insulation — Determination of steady-state thermal resistance and related properties — Heat flow meter apparatus ISO 11561, Ageing of thermal insulation materials — Determination of the long-term change in thermal resistance of closed-cell plastics (accelerated laboratory test methods) ISO 12576-1, Thermal insulation — Insulating materials and products for buildings — Conformity control systems — Part 1: Factory-made products ISO 16000-4, Indoor air — Part 4: Determination of formaldehyde — Diffusive sampling method ISO 16000-9, Indoor air — Part 9: Determination of the emission of volatile organic compounds from building products and furnishing — Emission test chamber method 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — IEC Electropedia: available at http://www.electropedia.org/ — ISO Online browsing platform: available at https://www.iso.org/obp 3.1 cellular foam cellular material made by combining cellulose material with starch in a manufacturing process 4.7 Dimension Dimension tolerance of the material shall be not greater than indicated in Table 2. For length and width, average the value of three specimens measured to within 1 mm using a ruler with the specimens spread flatways. For thickness, average the value of three specimens measured to within 0,1 mm using a thickness gauge. 5 Test methods 5.1 Sampling Enough material shall...
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