标准编号:	GB/T 1033.2-2010
中文名称:	塑料 非泡沫塑料密度的测定 第2部分：密度梯度柱法
英文名称:	Plastics—Methods for determining the density of non-cellular plastics—Part 2:Density gradient column method
中标分类:	G31    合成树脂、塑料基础标准与通用方法
行业分类:	GB    国家标准
ICS分类:	83.080.01 83.080.01    塑料综合 83.080.01
发布机构:	中华人民共和国国家质量监督检验检疫总局 中国家标准化管理委员会
发布日期:	2010-09-26
实施日期:	2011-8-1
标准状态:	valid
翻译语言:	英文
文件格式:	PDF
中文字符数:	14000 字
翻译价格(元):	840.0
交付时间:	付款后 1 个工作日

1 Scope This part of GB/T 1033 specifies a gradient column method for the determination of the density of non-cellular plastics. This part is applicable to the pellets of non-cellular moulded or extruded plastics in void-free form. Note: Density is frequently used to follow variations in physical structure or composition of plastic materials. Density may also be useful in assessing the uniformity of samples or specimens. Often the density of plastic materials will depend upon the choice of specimen preparation method. When this is the case, precise details of the specimen preparation method will have to be included in the appropriate material specification. 2 Normative References The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of GB/T 1033. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this part. However parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. GB/T 1033.1-2008 Plastics — Methods for Determining the Density of Non-cellular Plastics —Part 1: Immersion Method Liquid Pyknometer Method and Titration Method (ISO 1183-1:2004, IDT) GB/T 2035-2008 Terms and Definitions for Plastics (ISO 472:1999, IDT) GB/T 2918-1998 Plastics — Standard Atmospheres for Conditioning and Testing (idt ISO 291: 1997) GB/T 6379.2-2004 Accuracy (Trueness and Precision) of Measurement Methods and Results — Part 2: Basic Method for the Determination of Repeatability and Reproducibility of a Standard Measurement Method (ISO 5725-2:1994, IDT) 3 Terms and Definitions For the purposes of this part, the terms and definitions given in GB/T 2035-2008 and the following apply. 3.1 density ρ ratio of the mass m of a sample to its volume V (at the temperature t) expressed in kg/m3, kg/dm3(g/cm3) or kg/L(mg/mL)

Foreword II 1 Scope 2 Normative References 3 Terms and Definitions 4 Conditioning 5 Method 6 Precision 7 Test Report Annex A (Informative) Preparation of Density Gradient Column Annex B (Informative) Liquid Systems Suitable for Density Determinations Annex C (Informative) Deviations between This Part of GB/T 1033 and Method D of GB/T 1033-1986 Bibliography