GB/T 42529-2023 in English

VALID

Evaluation requirements for moisture conduction and phase change respiratory function of new wall materials

Issued on:2023-05-23
Implemented on:2023-12-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $160.00
$156.00

Standard No:	GB/T 42529-2023
Document status:	VALID
Title in English:	Evaluation requirements for moisture conduction and phase change respiratory function of new wall materials
Title in Chinese:	新型墙体材料湿传导及相变呼吸功能的评价要求
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2023-05-23
Implemented on:	2023-12-01
ICS Classification:	91.100.15-Mineral materials and products
Chinese Classification:	Q15-Wall
Professional Classification:	GB-National Standard
Related Keywords:	phase change standard frameworks test mode category phase change breathing volume phase change % phase change breathing volume class iii material tmax≥5 h slow phase change ≤△max phase change fast phase change
Related Topics:	conduction standard New Superconducting Materials new semiconductor materials new semiconductor materials New Special Functional Materials New Electric Materials Molybdenum ditelluride-a new semiconductor material New color changing material New Functional Materials Molybdenum ditelluride new semiconductor material Functionality of new electronic devices new optical material new physical materials Quinoid Functional Materials New functional glass material deformation material Functionality of new semiconductors new carbon material from the evaluation function energy conduction Wall Materials energy conduction Wall Materials New Optical Information Materials new wall material Bulk phase in material New Optoelectronic Materials New Adsorbent Material work of breathing new luminescent material new membrane material new electronic materials new smart material Humidity function new vibration material Moisture deformation rate

《GB/T 42529-2023新型墙体材料湿传导及相变呼吸功能的评价要求》由TC285（全国墙体屋面及道路用建筑材料标准化技术委员会）归口，主管部门为中国建筑材料联合会。

Introduction

1. Background of standard formulation and technological evolution

With the continuous improvement of building energy conservation and environmental protection requirements, new wall materials play an increasingly important role in regulating indoor temperature and humidity. The GB/T 42529-2023 standard aims to provide a scientific basis for evaluating the moisture conduction and phase change breathing functions of such materials to ensure that their performance in practical applications meets the standards.

2. Comparison of standard frameworks

Test mode category	Phase change breathing volume		Phase change breathing rate
Test mode category	Evaluation index	Evaluation result	Evaluation index	Evaluation result
General mode	max <0.5%	Phase change breathing volume Class I material	tmax<2 h	Fast phase change breathing material
	0.5%≤△max<5%	Phase change breathing capacity Class II materials	2h≤tmax<10 h	Medium speed phase change breathing materials
	△max≥5%	Phase change breathing capacity Class III materials	t max≥10 h	Slow phase change breathing materials
Comfort mode	pmax<0.1%	Phase change breathing capacity Class I materials	tmax<1 h	Fast phase change breathing materials
	0.1%≤△max<1%	Phase change breathing capacity Class II materials	1 h≤tmax<5 h	Medium-speed phase change breathing material
	△max≥1%	Phase change breathing volume Class III material	tmax≥5 h	Slow phase change breathing material

3. Implementation suggestions

In actual applications, it is recommended to:

Material research and development:Focus on improving the phase change breathing rate of the material and optimizing its performance in different environments.
Production process:Strictly follow the standard requirements for sample preparation and sensor installation to ensure the accuracy of test data.
Application promotion:Choose new wall materials suitable for local conditions in combination with climate zoning to maximize its energy-saving effect.

More samples: JGJ 94-2008 QC/T 942-2021 GB 18306-2015

Sample only — not a preview of GB/T 42529-2023