GB/T 45012-2024工業(yè)用絕熱制品低溫線性熱膨脹系數(shù)的測定

ICS

91.100.60

CCS

Q25

中華人民共和國國家標準

GB/T45012—2024/ISO23766：2022

工業(yè)用絕熱制品

低溫線性熱膨脹系數(shù)的測定

Thermalinsulatingproductsforindustrialinstallations—Determinationofthecoef?

ficientoflinearthermalexpansionatsub-ambienttemperatures

（ISO23766：2022，IDT）

2024-11-28發(fā)布2025-06-01實施

國家市場監(jiān)督管理總局發(fā)布

國家標準化管理委員會

GB/T45012—2024/ISO23766：2022

目次

前言

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Ⅲ

1

范圍

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1

2

規(guī)范性引用文件

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1

3

術(shù)語和定義

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4

方法A：光學法

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4.1

原理

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4.2

設備

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4.3

試樣

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3

4.4

試樣狀態(tài)調(diào)節(jié)

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3

4.5

步驟

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5

方法B：位移法

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4

5.1

原理

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4

5.2

設備

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4

5.3

試樣

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5

5.4

試樣狀態(tài)調(diào)節(jié)

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5.5

步驟

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6

結(jié)果計算和表示

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7

測量的精度

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8

試驗報告

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6

參考文獻

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Ⅰ

GB/T45012—2024/ISO23766：2022

前言

本文件按照GB/T1.1—2020《標準化工作導則

第1部分：標準化文件的結(jié)構(gòu)和起草規(guī)則》的規(guī)

定起草。

本文件等同采用ISO23766：2022《工業(yè)用絕熱制品

低溫線性熱膨脹系數(shù)的測定》。

請注意本文件的某些內(nèi)容可能涉及專利。本文件的發(fā)布機構(gòu)不承擔識別專利的責任。

本文件由中國建筑材料聯(lián)合會提出。

本文件由全國絕熱材料標準化技術(shù)委員會（SAC/TC191）歸口。

本文件起草單位：南京玻璃纖維研究設計院有限公司、安徽中冶淮海裝配式建筑有限公司、上海大

音希聲新型材料有限公司、弘成康?。ㄌK州）新材料科技有限公司、中科標準（寧德）科技有限公司、

北京華艾鑫節(jié)能設備有限公司、深圳市金臺檢測技術(shù)有限公司、河北金威新型建筑材料有限公司、浙江

振申絕熱科技股份有限公司、寶潤達新型材料股份有限公司、鄭州峰泰納米材料有限公司、南京中材標

準認證有限公司。

本文件主要起草人：崔軍、王睿、余波、王志平、方蔚然、林影、楊新敬、郭曉明、高正偉、

張永福、朱正葉、王帥、毛欣飛、潘陽、張帥愷、寇鵬飛、劉濤、韓晴雪、孟浩。

Ⅲ

GB/T45012—2024/ISO23766：2022

工業(yè)用絕熱制品

低溫線性熱膨脹系數(shù)的測定

1范圍

本文件規(guī)定了測定絕熱制品低溫（-196℃~25℃）線性熱膨脹系數(shù)的設備和步驟，低溫取決于試

樣可能的溫度限制。

本文件不適用于在試驗過程中由于水或相變而產(chǎn)生不可逆尺寸變化的產(chǎn)品。

2規(guī)范性引用文件

下列文件中的內(nèi)容通過文中的規(guī)范性引用而構(gòu)成本文件必不可少的條款。其中，注日期的引用文

件，僅該日期對應的版本適用于本文件；不注日期的引用文件，其最新版本（包括所有的修改單）適用

于本文件。

ISO9229絕熱

術(shù)語（Thermalinsulation—Vocabulary）

注：GB/T4132—2023絕熱

術(shù)語（ISO9229：2020，IDT）

ISO18099建筑設備及工業(yè)裝置用絕熱制品熱膨脹系數(shù)的測定（Thermalinsulatingproducts

forbuildingequipmentandindustrialinstallations—Determinationofthecoefficientofthermalexpan?

sion）

注：GB/T34183—2017建筑設備及工業(yè)裝置用絕熱制品熱膨脹系數(shù)的測定（ISO18099：2013，IDT）

3術(shù)語和定義

ISO9229和ISO18099界定的以及下列術(shù)語和定義適用于本文件。

3.1

低溫sub-ambientte