BS EN ISO 1163-2-2000 塑料.未增塑聚氯乙烯(PVC-U)模塑和挤塑材料.试样制备和性能测定

标准号：BS EN ISO 1163-2-2000
中文标准名称：塑料.未增塑聚氯乙烯(PVC-U)模塑和挤塑材料.试样制备和性能测定
英文标准名称：Plastics - Unplasticized poly(vinyl chloride) (PVC-U) moulding and extrusion materials - Preparation of test specimens and determination of properties
标准类型：G31
发布日期：1996/3/15 12:00:00
实施日期：1996/3/15 12:00:00
中国标准分类号：G31
国际标准分类号：83.080.20
适用范围：This part of ISO 1163 specifies procedures and con-ditions for the preparation of test specimens of PVC-U materials in a specified state, and methods for meas-uring their properties. Any property listed in this part and referred to in combination with part 1 shall be determined by the method referred to in this part. No figures are quoted for these properties. Those re-quired for the designation of PVC-U thermoplastics are given in part 1 of this International Standard. All properties shall be determined by the appropriate methods referred to in this part of ISO 1163 and val-ues obtained shall be presented as laid down in ISO 10350. The values determined in accordance with this part of ISO 1163 will not necessarily be identical to those obtained using specimens of different dimensions and/or prepared by different procedures. The values obtained for the properties of a moulding depend on the moulding compound, the shape, the test method and the state of anisotropy. The last-mentioned de-pends on the gating of the mould and the moulding conditions, for example temperature, pressure and injection rate. Any subsequent treatment must also be considered, for example conditioning or annealing. The thermal history and the internal stresses of the specimens may strongly influence the thermal and mechanical properties and the resistance to environ-mental stress cracking, but exert less effect on the electrical properties, which depend mainly on the chemical composition of the moulding compound. In order to obtain reproducible test results, the fol-lowing two conditions shall be met: — use test specimens with the specified dimensions and conditioning; — use test procedures as specified in this part of ISO 1163.