GB/T 1041-2008 in English

《GB/T 1041-2008塑料 压缩性能的测定》由TC15（全国塑料标准化技术委员会）归口，TC15SC4（全国塑料标准化技术委员会通用方法和产品分会）执行，主管部门为中国石油和化学工业联合会。
本标准规定了在标准条件下测定塑料压缩性能的方法，规定了标准试样，但其长度可以调整，以防止其压缩尧曲而影响试验结果，以及试验速度的范围。
本标准用于研究试样的压缩行为并用来测定在标准条件下压缩应力-应变与压缩强度、压缩模量及其他特性的关系。
本标准适用于下述材料：
――硬质和半硬质热塑性模塑和挤塑材料，包括用短纤维、小条、小片或颗粒填充的增强复合材料以及未填充的复合材料或半硬质的热塑性片材；
――硬质或半硬质的热固性模塑材料，包括填充或增强的复合材料，硬质或半硬质的热固性片材；
――热致液晶聚合物。
本标准一般不适用于纺织纤维增强的复合塑料和层压材料、硬质泡沫材料和含有泡沫材料或泡沫橡胶的夹层结构的材料。
本标准规定了优选的试样尺寸。
本标准代替GB/T 1041-1992《塑料压缩性能试验方法》（idt ISO 604:1973）和GB/T 14694-1993《塑料压缩弹性模量的测定》，与GB/T 1041-1992和GB/T 14694-1993相比，主要技术差异如下：
――更改了标准名称，增加了目次、前言；
――扩大了适用范围；
――增加了规范性引用文件；
――增加了术语和定义并给出相应的符号；
――修订后标准试样尺寸与修订前标准试样尺寸不同；
――确定了模量测定的应变取值范围；
――对注描述的单位均编放入正文；
――增加了试验报告的内容。

1 Scope

This standard specifies a method for determining the compressive properties of plastics under defined conditions. A standard test specimen is defined but its length may be adjusted to prevent buckling under load from affecting the results. A range of test speeds is included.

This standard is used to investigate the compressive behaviour of the test specimens and for determining the compressive strength, compressive modulus and other aspects of the compressive stress/strain relationship under the conditions defined.

This standard is applicable to the following range of materials:

— rigid and semi-rigid thermoplastic moulding and extrusion materials, including compounds filled and reinforced by e.g. short fibres, small rods, plates or granules in addition to unfilled types; rigid and semi-rigid thermoplastic sheet;

— rigid and semi-rigid thermoset moulding materials, including filled and reinforced compounds; rigid and semi-rigid thermoset sheet;

— thermotropic liquid-crystal polymers.

In agreement with ISO 10350-1:1998 and GB/T 19467.2-2004, this standard applies to fibre-reinforced compounds with fibre lengths ≤7.5 mm prior to processing.

This standard is not normally suitable for use with materials reinforced by textile fibres, fibre-reinforced plastic composites and laminates, rigid cellular materials or sandwich structures containing cellular material or rubber.

This standard is performed using specimens which may be moulded to the chosen dimensions, machined from the central portion of a standard multipurpose test specimen (see GB/T 11997-2008) or machined from finished or semi-finished products such as mouldings or extruded or cast sheet.

This standard specifies preferred dimensions for the test specimen. Tests which are carried out on specimens of different dimensions, or on specimens which are prepared under different conditions, may produce results which are not comparable. Other factors, such as the test speed and the conditioning of the specimens, can also influence the results. Consequently, when comparable data are required, these factors must be carefully controlled and recorded.

2 Normative References

The following normative documents contain provisions which, through reference in this text, constitute provisions of this Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this Standard 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 2918-1998 Plastics — Standard Atmospheres for Conditioning and Testing (idt ISO 291:1997)

GBT 5471-2008 Plastics — Compression Moulding of Test Specimens of Thermosetting Materials (ISO 295:2004, IDT)

GB/T 9352-2008 Plastic — Compression Moulding of Test Specimens of Thermoplastic Materials (ISO 293:2004, IDT)

GB/T 11997-2008 Plastic — Multipurpose Test Specimens (ISO 3167:2002, 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)

GB/T 17200-1997 Requirements for Tensile, Flexural and Compression Testing Machines for Rubbers and Plastics (idt ISO 5893:1993)

GB/T 19467.2-2004 Plastics — Acquisition and Presentation of Comparable Single-point Data — Part 2: Long-fibre-reinforced Plastics (ISO 10350-2:2001, IDT)

ISO 2602:1980 Statistical Interpretation of Test Results — Estimation of the Mean — Confidence Interval

Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Principle
5 Apparatus
6 Test Specimens
7 Number of Test Specimens
8 Conditioning of Test Specimens
9 Test Procedure
10 Calculation and Expression of Results
11 Precision
12 Test Report
Annex A (Normative) Small Test Specimens
Annex B (Informative) Limits of Buckling
Annex C (Normative) Compliance Correction
Bibliography