GB/T 2572-2005 in English

《GB/T 2572-2005纤维增强塑料平均线膨胀系数试验方法》由TC39（全国纤维增强塑料标准化技术委员会）归口，主管部门为中国建筑材料联合会
本标准规定了顶杆示差法测定纤维增强塑料平均线膨胀系数的试样、仪器设备、试验步骤、计算和试验报告。本标准适用于用示差法测定纤维增强塑料的平均线膨胀系数。

Fiber-reinforced plastics composites - Determination for mean coefficient of linear expansion

1 Scope

This standard specifies the specimen, instruments and equipment, test procedures, calculation and test report for determining mean coefficient of linear thermal expansion of fiber reinforced plastics composites by push-rod differential method.

It is applicable to the determination of mean coefficient of linear thermal expansion of fiber-reinforced plastics composites.

2 Normative references

The following documents contain provisions which, through reference in this text, constitute provisions of this method. For dated references, subsequent amendments (excluding corrections) to, or revisions, of any of these publications do not apply. However, parties to agreements based on this method are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies.

GB 1446-2005 Fiber-reinforced plastics composites - The generals for determination of properties

3 Term and definition

For the purposes of this standard, the following term and definition apply.

3.1
mean coefficient of linear thermal expansion
mean value of specimen length variations per change of 1℃ from temperature t1 to t2

4 Principle

In this method, a linear thermal expansion coefficient tester for push-rod differential method is used to uniformly heat the specimen, control the rising rate of the specimen temperature, measure the specimen temperature and its corresponding length variation, and calculate the mean coefficient of linear thermal expansion within the required temperature range.

Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Specimen
6 Test equipment
7 Test procedures
8 Calculation
9 Results
10 Test report