標(biāo)準(zhǔn)解讀

《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》是一項國家標(biāo)準(zhǔn)，旨在規(guī)范工業(yè)用絕熱材料在低溫條件下線性熱膨脹系數(shù)的測試方法。該標(biāo)準(zhǔn)適用于各種工業(yè)用絕熱制品，如泡沫塑料、礦物棉等，在低溫環(huán)境下的性能評估。

標(biāo)準(zhǔn)詳細(xì)規(guī)定了實驗所需設(shè)備和條件，包括溫度控制裝置、測量儀器精度要求以及樣品制備方法。其中，對于樣品尺寸有明確要求，以確保數(shù)據(jù)的準(zhǔn)確性和重復(fù)性。測試過程中，需要將樣品置于特定的溫度環(huán)境中，并逐步改變溫度，記錄不同溫度點下樣品長度的變化情況。通過這些數(shù)據(jù)計算出材料的線性熱膨脹系數(shù)。

此外，《GB/T 45012-2024》還提供了關(guān)于如何處理實驗結(jié)果的具體指導(dǎo)，比如數(shù)據(jù)處理方法、報告編寫格式等內(nèi)容，幫助使用者更好地理解和應(yīng)用測試結(jié)果。對于可能出現(xiàn)的異常情況或不確定因素，標(biāo)準(zhǔn)也給出了相應(yīng)的處理建議，以保證測試過程的科學(xué)性和可靠性。

該標(biāo)準(zhǔn)的發(fā)布與實施有助于提高我國工業(yè)用絕熱材料質(zhì)量檢測水平，為相關(guān)行業(yè)提供技術(shù)支持，促進產(chǎn)品質(zhì)量提升和技術(shù)進步。


如需獲取更多詳盡信息，請直接參考下方經(jīng)官方授權(quán)發(fā)布的權(quán)威標(biāo)準(zhǔn)文檔。

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文檔簡介

ICS

91.100.60

CCS

Q25

中華人民共和國國家標(biāo)準(zhǔn)

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(biāo)準(zhǔn)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(shù)語和定義

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

1

4

方法A：光學(xué)法

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

1

4.1

原理

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

1

4.2

設(shè)備

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

2

4.3

試樣

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

3

4.4

試樣狀態(tài)調(diào)節(jié)

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

3

4.5

步驟

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

3

5

方法B：位移法

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

4

5.1

原理

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

4

5.2

設(shè)備

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

4

5.3

試樣

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

5

5.4

試樣狀態(tài)調(diào)節(jié)

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

5

5.5

步驟

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

5

6

結(jié)果計算和表示

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

5

7

測量的精度

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

6

8

試驗報告

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

6

參考文獻

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

7

Ⅰ

GB/T45012—2024/ISO23766：2022

前言

本文件按照GB/T1.1—2020《標(biāo)準(zhǔn)化工作導(dǎo)則

第1部分：標(biāo)準(zhǔn)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(dān)識別專利的責(zé)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(biāo)準(zhǔn)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(shè)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(biāo)準(zhǔn)（寧德）科技有限公司、

北京華艾鑫節(jié)能設(shè)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(dá)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(biāo)

準(zhǔn)認(rèn)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(shè)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(yīng)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(shè)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(shè)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

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