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GB/T 34183-2017: Thermal insulating products for building equipment and industrial installations -- Determination of the coefficient of thermal expansion
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 34183-2017 | English | 199 |
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Thermal insulating products for building equipment and industrial installations -- Determination of the coefficient of thermal expansion
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GB/T 34183-2017
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Basic data | Standard ID | GB/T 34183-2017 (GB/T34183-2017) | | Description (Translated English) | Thermal insulating products for building equipment and industrial installations -- Determination of the coefficient of thermal expansion | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q25 | | Classification of International Standard | 91.100.60 | | Word Count Estimation | 10,180 | | Date of Issue | 2017-09-07 | | Date of Implementation | 2018-08-01 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 34183-2017: Thermal insulating products for building equipment and industrial installations -- Determination of the coefficient of thermal expansion
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Thermal insulating products for building equipment and industrial installations - Determination of the coefficient of thermal expansion
ICS 91.100.60
Q25
National Standards of People's Republic of China
Insulation products for construction equipment and industrial installations
Determination of thermal expansion coefficient
(ISO 18099.2013, IDT)
2017-09-07 Posted
2018-08-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard uses the translation method identical with ISO 18099.2013 "thermal insulation products for construction equipment and industrial installations thermal expansion coefficient
Determination. "
This standard proposed by the China Building Materials Federation.
This standard by the National Standardization Technical Committee thermal insulation material (SAC/TC191) centralized.
This standard drafting unit. Nanjing Fiberglass Research and Design Institute Co., Ltd., the national glass fiber product quality supervision and inspection center.
The main drafters of this standard. Zhang Jianhong, Wang Jiaqing, Cui Jun, Tang Jian, Yang Chao.
Insulation products for construction equipment and industrial installations
Determination of thermal expansion coefficient
1 Scope
This standard specifies the principle of linear thermal expansion coefficient, equipment, samples, steps, calculations and results.
This standard applies to thermal insulation products, the temperature range of 196 ℃ ~ 850 ℃, and does not exceed the temperature limit of thermal products. This standard is not suitable
Used for articles that undergo dimensional changes during the test due to water loss or other phase changes.
2 Terms and definitions
The following terms and definitions apply to this document.
2.1
Linear thermal expansion linearthermalexpansion
Reversible changes in sample length due to temperature changes.
2.2
Mean linear coefficient of thermal expansion
αm
The reversible change in length divided by the product of length and temperature difference at the reference temperature.
2.3
Coefficient of thermal expansion at temperature T coefficientoftherlexpansionatthetemperatureT
αt
Refers to the high temperature close to low temperature αm limit. see picture 1.
Note. The definitions of αm and αt assume that the change in length is continuous with the change in temperature. When the sample occurs, such as recrystallization or water loss and other phase transition
Produce physical changes, it is not appropriate to use the average linear thermal expansion coefficient. The curve gives the function of length change and temperature change, but average linear thermal expansion
The coefficient should not be calculated from the discontinuity of the curve.
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