Aerospace series - Test methods for transparent materials for aircraft glazing - Part 12: Determination of linear thermal expansion
航空航天系列 - 用于飞机玻璃的透明材料的测试方法 - 第12部分:线性热膨胀的测定
This standard specifies the method to determine the reversible linear thermal expansion of plastics with exclusion of changes in length due to accidental factors such as changes in moisture content, degree of polymerization and stressrelease. Since it will not be possible to exclude all these accidental factors, the method can be expected to give only approximate values.