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GB/T 1040 "Plastics — Determination of tensile properties" consists of five parts:
— Part 1: General principles;
— Part 2: Test conditions for moulding and extrusion plastics;
— Part 3: Test conditions for films and sheets;
— Part 4: Test conditions for isotropic and orthotropic fibre-reinforced plastic composites;
— Part 5: Test conditions for unidirectional fibre-reinforced plastic composites.
This Part is Part 2 of GB/T 1040.
This Part is identical to ISO 527-2:1993 "Plastics - Determination of tensile properties — Part 2: Test conditions for moulding and extrusion plastics" (English edition).
To be convenient for use, the following editing revisions are made in this Part.
a) The word "this International Standard" is changed into "this Standard" or "GB/T 1040"; "this Part of ISO 527" is changed into "this Part of GB/T 1040" or "this Part".
b) The foreword of ISO 527-2:1993 was deleted;
c) Add the national foreword of this Part;
d) Add the note of 1.3;
e) Two international standards in Chapter 2 "Normative References" are replaced by corresponding national standards of China.
f) Replace the decimal point "." in original international standard with the decimal point ",".
This Part and other parts jointly replace GB/T 1040-1992 "Plastics - determination of tensile properties" and GB/T 16421-1996 "Plastics — Determination of tensile properties by use of small specimens".
Compared with GB/T 1040-1992, the main changes on technical contents in this Part are as follows:
— Standard name was changed, adds Content and Foreword;
— Adds the chapters of "Principle", "Number of Test Specimens", "Conditioning", "Precision" and Appendix A;
— "Subject Content and Application Scope" was changed into "Scope"; "Quoted Standards" was changed into "Normative References"; "Terms" was changed into "Definitions";
— Scope of application was extended;
— Standard test specimen types were changed from four types (I, II, III and IV) into two types (1A and 1B);
— Small test specimen types I (I1 and I2) and II (II1 and II2) of GB/T 16421-1996 were incorporated into Appendix A (Normative) of this Part, and the types were revised as 1BA, 1BB, 5A and 5B respectively; dimensions of test specimen were identical before and after revision;
— Expend the contents of the test report.
Appendix A of this Part is normative.
This Part was proposed by the China Petroleum and Chemical Industry Association.
This Part is under the jurisdiction of National Technical Committee 15 on Plastic of Standardization Administration of China — Subcommittee 4 on Method and Product (TC 15/SC 4).
Chief drafting organizations of this Part: China National Quality Supervision and Testing Center for Synthetic Resin, Resin Application Research Institute of Beijing Yanhua Petrochemical Co., Ltd., Guangzhou Kingfa Science and technology Co., Ltd. and Sichuan Huaton Industry Commerce Development Shareholding Co., Ltd.
Participating drafting organizations of this Part: China National Quality Supervision and Testing Center for Petrochemical and Organic Material Synthetic Resin, China National Test Center of Polymer and Chemical Building Materials, China National Center for Quality Supervision & Test of Plastic Products (Beijing), China National Center for Quality Supervision & Test of Plastic Products (Fuzhou), Jinxi Research Institute of Chemical Industry, Zhonghao Chenguang Research Institute of Chemical Industry and Shenzhen MTS Systems (China) Co., Ltd.
Chief drafting staff of this Part: Song Guirong, Wang Yongming, Li Jianjun and Dai Houyi.
The previous editions of the standards replaced by this Part are as follows:
— GB/T 1040-1979, GB/T 1040-1992;
— GB/T 16421-1996.
Plastics — Determination of Tensile Properties — Part 2: Test Conditions for Moulding and Extrusion Plastics
塑料 拉伸性能的測定
第2部分：模塑和擠塑塑料的試驗條件
1 Scope
1.1 This Part of GB/T 1040 specifies the test conditions for determining the tensile properties of moulding and extrusion plastics, based upon the general principles given in Part 1.
1.2 The methods are selectively suitable for use with the following range of materials:
— Rigid and semirigid thermoplastics moulding, extrusion and cast materials, including compounds filled and reinforced by e.g. short fibres, small rods, plates or granules but excluding textile fibres;
— Rigid and semirigid thermosetting moulding and cast materials, including filled and reinforced compounds but excluding textile fibres as reinforcement;
— Thermotropic liquid crystal polymers.
The methods are not suitable for use with materials reinforced by textile fibres, with rigid cellular materials or sandwich structures containing cellular material.
1.3 The methods are applied using specimens which may be either moulded to the chosen dimensions or machined, cut or punched from injection- or compression-moulded plates. The multipurpose test specimen is preferred (see ISO 3167:1993, Plastics — Multipurpose test specimens).
Note: ISO 3167:1993 was replaced by ISO 3167:2002.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this Part of GB/T 1040. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. 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 1040.1-2006 Plastics — Determination of tensile properties — Part 1: General principles (ISO 527-1:1993, IDT)
GB/T 17037.1-1997 Injection moulding of test specimens of thermoplastic materials — Part 1: General principles and moulding of multipurpose and bar test specimens (idt ISO 294-1:1996)
ISO 37:1977 Rubber, vulcanized — Determination of tensile stress-strain properties
ISO 293:1986 Plastics — Compression moulding test specimens of thermoplastic materials
ISO 295:1991 Plastics — Compression moulding of test specimens of thermosetting materials
ISO 1926:1979 Cellular plastics — Determination of tensile properties of rigid materials
ISO 2818:1994 Plastics — Preparation of test specimens by machining
3 Principle
See GB/T 1040.1-2006, Chapter 3.
4 Definitions
For the purposes of this Part of GB/T 1040, the definitions given in GB/T 1040.1-2006 apply.
5 Apparatus
See GB/T 1040.1-2006, Chapter 5.
6 Test Specimens
6.1 Shape and dimensions
Wherever possible, the test specimens shall be dumb-bell-shaped types 1A and 1B as shown in Figure 1. Type 1A is preferred for directly-moulded multipurpose test specimens, type 1B for machined specimens.
Note: Types 1A and 1B test specimens having4 mm thickness are identical to the multipurpose test specimens according to ISO 3167, types A and B, respectively.
For the use of small specimens, see Appendix A.
Foreword II
1 Scope
2 Normative References
3 Principle
4 Definitions
5 Apparatus
6 Test Specimens
7 Number of Test Specimens
8 Conditioning
9 Procedure
10 Calculation and Expression of Results
11 Precision
12 Test Report
Appendix A (Normative) Small Specimens
