GB/T 14207-2024 English PDFUS$199.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 14207-2024: Test method for water absorption of sandwich constructions or cores Status: Valid GB/T 14207: Historical versions
Basic dataStandard 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83.120 Word Count Estimation: 10,187 Date of Issue: 2024-04-25 Date of Implementation: 2024-11-01 Older Standard (superseded by this standard): GB/T 14207-2008 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 14207-2024: Test method for water absorption of sandwich constructions or cores---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.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 ForewordThis 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 cores1 ScopeThis 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 referencesThe 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 plastics3 Terms and definitionsThe terms and definitions defined in GB/T 3961 apply to this document:4 Test PrincipleWhen 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 equipment5:1 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: ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 14207-2024_English be delivered?Answer: Upon your order, we will start to translate GB/T 14207-2024_English as soon as possible, and keep you informed of the progress. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 14207-2024?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 14207-2024 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
