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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

·····································································································

Ⅲ

1

范圍

··································································································

1

2

規(guī)范性引用文件

······················································································

1

3

術語和定義

···························································································

1

4

方法A：光學法

······················································································

1

4.1

原理

······························································································

1

4.2

設備

······························································································

2

4.3

試樣

······························································································

3

4.4

試樣狀態(tài)調節(jié)

····················································································

3

4.5

步驟

······························································································

3

5

方法B：位移法

······················································································

4

5.1

原理

······························································································

4

5.2

設備

······························································································

4

5.3

試樣

······························································································

5

5.4

試樣狀態(tài)調節(jié)

····················································································

5

5.5

步驟

······························································································

5

6

結果計算和表示

······················································································

5

7

測量的精度

···························································································

6

8

試驗報告

······························································································

6

參考文獻

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7

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：標準化文件的結構和起草規(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容可能涉及專利。本文件的發(fā)布機構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生不可逆尺寸變化的產品。

2規(guī)范性引用文件

下列文件中的內容通過文中的規(guī)范性引用而構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

術語（Thermalinsulation—Vocabulary）

注：GB/T4132—2023絕熱

術語（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術語和定義

ISO9229和ISO18099界定的以及下列術語和定義適用于本文件。

3.1

低溫sub-ambientte