Search result: GB/T 14207-2024 (GB/T 14207-2008 Older version)
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| GB/T 14207-2024 | English | 199 |
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Test method for water absorption of sandwich constructions or cores
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GB/T 14207-2024
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| GB/T 14207-2008 | English | 239 |
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Test method for water absorption of sandwich constructions or cores
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GB/T 14207-2008
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| GB/T 14207-1993 | English | 239 |
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Test method for water absorption of sandwich constructions or cores
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GB/T 14207-1993
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| Standard ID | GB/T 14207-2024 (GB/T14207-2024) | | Description (Translated English) | Test method for water absorption of sandwich constructions or cores | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q23 | | Classification of International Standard | 83.120 | | Word Count Estimation | 10,151 | | Date of Issue | 2024-04-25 | | Date of Implementation | 2024-11-01 | | Older Standard (superseded by this standard) | GB/T 14207-2008 | | Drafting Organization | Shanghai FRP Research Institute Co., Ltd., Shanghai Shangbo Testing Co., Ltd., Mingyang Smart Energy Group Co., Ltd., Jilin Chongtong Chengfei New Materials Co., Ltd., Shanghai Electric Wind Power Group Co., Ltd., Shanghai Norwegian Certification Co., Ltd., Jiangsu Goldwind Technology Co., Ltd., Zhejiang Lianyang New Materials Co., Ltd., Nantong Geban Fiberglass Products Co., Ltd., Beijing FRP Institute Testing Center Co., Ltd., Beijing FRP Research and Design Institute Co., Ltd., Weihai Weisai New Materials Technology Co., Ltd., AVIC Touchstone Testing Technology (Wuxi) Co., Ltd. | | Administrative Organization | National Technical Committee for Standardization of Fiber Reinforced Plastics (SAC/TC 39) | | Proposing organization | China Building Materials Federation | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration |
GB/T 14207-2024: Test method for water absorption of sandwich structures or cores
ICS 83:120
CCSQ23
National Standards of People's Republic of China
Replace GB/T 14207-2008
Test method for water absorption of sandwich structures or cores
Released on 2024-04-25
2024-11-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Preface
This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents"
Drafting:
This document replaces GB/T 14207-2008 "Test method for water absorption of sandwich structures or cores" and is consistent with GB/T 14207-2008:
In addition to structural adjustments and editorial changes, the main technical changes are as follows:
a) Added test equipment vacuum drying oven and constant temperature and humidity chamber (see 5:2, 5:3);
b) Added requirements for the parallelism tolerance of the relative surfaces of the specimen and the perpendicularity tolerance of the adjacent surfaces (see 6:2:2);
c) Deleted the content of sample state adjustment (see 6:3 of the:2008 edition);
d) Added operational requirements for sample size measurement (see 8:2);
e) Added a drying step for high temperature and high humidity tests (see 8:4:2);
f) Two immersion methods, high temperature and high humidity test and room temperature saturated water absorption test, were added (see 8:5:2 and 8:5:3);
g) The content of the test report has been changed (see Chapter 10, Chapter 9 of the:2008 edition):
Please note that some of the contents of this document may involve patents: The issuing organization of this document does not assume the responsibility for identifying patents:
This document was proposed by China Building Materials Federation:
This document is under the jurisdiction of the National Technical Committee on Standardization of Fiber Reinforced Plastics (SAC/TC39):
This document was drafted by: Shanghai FRP Research Institute Co:, Ltd:, Shanghai Shangbo Testing Co:, Ltd:, Mingyang Smart Energy Group Co:, Ltd:
Jilin Chongtong Chengfei New Materials Co:, Ltd:, Shanghai Electric Wind Power Group Co:, Ltd:, Shanghai Norwegian Certification Co:, Ltd:, Jiangsu Jin
Feng Technology Co:, Ltd:, Zhejiang Lianyang New Materials Co:, Ltd:, Nantong Geban Fiberglass Products Co:, Ltd:, Beijing Glass Steel Institute Testing Center
Co:, Ltd:, Beijing Fiberglass Research and Design Institute Co:, Ltd:, Weihai Weisai New Material Technology Co:, Ltd:, AVIC Touchstone Testing Technology (No:
TIN) LIMITED:
The main drafters of this document are: Liu Shuyuan, Zhang Xiaoping, Gao Fei, Wang Yanli, Luo Shasha, Bai Hongwei, Zhao Guobin, Hao Zhuang, Li Quanzhou, Zhang Rui,
Gu Hua, Peng Xingcai, Wang Hailong, Liu Huwei, Wang Dongdong, and Wang Haijun:
This document was first issued in:1993, revised for the first time in:2008, and this is the second revision:
Test method for water absorption of sandwich structures or cores
1 Scope
This document specifies the test principle, test equipment, test specimens, test environment conditions, test procedures,
Test results, processing and test report:
This document is applicable to testing the water absorption rate of sandwich structures or cores, the water absorption per unit volume, and the mass loss rate of water-soluble substances:
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document:
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document:
GB/T 1446 General principles for test methods for properties of fiber reinforced plastics
GB/T 3961 Terminology of fiber reinforced plastics
3 Terms and definitions
The terms and definitions defined in GB/T 3961 apply to this document:
4 Test Principle
When the sandwich structure or core material comes into contact with water, water molecules diffuse into the sandwich structure or core material and are transported physically or chemically:
It exists in the sandwich structure or core material: At the same time, some molecules in the sandwich structure or core material will also dissolve in water, which is manifested as
The increase or decrease in the mass of the layer structure or the core material can be used to measure the water absorption of the material by measuring the change in the mass of the material before and after water absorption:
5 Test equipment
5:1 Blast drying oven: The temperature control accuracy is 2°C:
5:2 Vacuum drying oven: temperature control accuracy is 2°C, vacuum degree is not less than -0:095MPa:
5:3 Constant temperature and humidity chamber: The temperature control accuracy is 2°C and the relative humidity control accuracy is 5%:
5:4 Dryer:
5:5 Balance: accuracy is 0:001g:
5:6 Constant temperature water bath: accuracy is 0:5℃:
5:7 Vernier caliper or other measuring tools: accuracy is 0:01mm:
6: Samples
6:1 Specimen size
6:1:1 The upper and lower surfaces of the specimen are square and the thickness of the specimen is the same as that of the sandwich structure product or core:
......
GB/T 14207-2008
Test method for water absorption of sandwich constructions or cores
ICS 83.120
Q23
National Standards of People's Republic of China
Replacing GB/T 14207-1993
Sandwich constructions or cores of water absorption
Posted 2008-06-30
2009-04-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard replaces GB/T 14207-1993 "Test methods for water absorption of sandwich constructions or cores." Compared with GB/T 14207-1993
The main changes are as follows.
--- Deletion of the test procedure unheated processing section (GB/T 14207-1993 of 6.6, 6.6 of this standard);
--- Increasing the drying temperature of the sample; (this standard 6.6);
--- Deleting absorbent material soaked in high water absorption time (GB/T 14207-1993 of 6.9);
--- Deleting thermally cured plastic heating and drying process temperature requirements (GB/T 14207-1993 6.10 in);
--- Without deleting the relevant formulas drying section and mass loss percentage (GB/T 14207-1993 of 7.1);
--- Consider increasing the mass loss percentage of water-soluble substance is calculated (this standard 7.2).
The standard proposed by China Building Materials Federation.
This standard by the national fiber-reinforced plastic Standardization Technical Committee.
Drafting of this standard. Shanghai FRP Research Institute.
The main drafters. Zhang Ruguang, Zhang Xiaoping, Wang Zhonglin.
This standard was first published in 1993, this is the first revision.
Sandwich constructions or cores of water absorption
1 Scope
This standard specifies the principles of sandwich constructions or cores of water absorption of the sample, the test environment and equipment, test procedures and calculations.
This standard applies to test absorbent core sandwich structures or percentage of mass per unit volume of water uptake and water-soluble substance loss one hundred
Fraction.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 1446-2005 fiber reinforced plastics General performance test method
Principle 3
When the sandwich structure or core material in contact with water, the water molecules inside the sandwich structure or core material diffuses to a physical or chemical way
Type occur in solids, while the core material in the sandwich structure or portion of the molecule will have dissolved in the water, the macroscopic manifestations of sandwich constructions or cores
Increase or decrease the material quality, the number is to increase the quality of the inherent nature of the material, i.e., the water-absorbing material.
4 Sample
4.1 specimen shape is square, sample thickness and sandwich products or cores of the same thickness.
4.1.1 foam, balsa wood and other continuous core or sandwich structure, the sample side length of 60mm.
4.1.2 honeycomb, corrugated and other lattice-type core or a sandwich structure, the sample side length of 60mm, or comprising at least four complete grid.
4.1.3 When the thickness of the sandwich product yet, take a core sample thickness 15mm.
4.2 Number of samples. 5.
5 test environment and equipment
5.1 Test Environment
According to GB/T 1446-2005 the provisions of Chapter 3.
5.2 Test Equipment
a) Blast Oven. can be controlled at (50 ± 2) ℃ and (105 ± 2) ℃;
b) the dryer;
c) balance. a sense of the amount of 0.001g;
d) water bath. to control the water temperature (23 ± 0.5) ℃;
e) measuring. accuracy of 0.01mm.
6 Test procedure
6.1 Sample preparation according to GB/T 1446-2005 specified in 4.1.
6.2 Visual inspection sample by GB/T 1446-2005 specified in 4.2.
6.3 for conditioning according to GB/T 1446-2005 specified in 4.4.
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