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GB/T 42734-2023: Non-flame retarded dual wall heat-shrinkable polyolefin sleeving- thick and medium wall
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| GB/T 42734-2023 | English | 299 |
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Non-flame retarded dual wall heat-shrinkable polyolefin sleeving- thick and medium wall
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GB/T 42734-2023
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Basic data | Standard ID | GB/T 42734-2023 (GB/T42734-2023) | | Description (Translated English) | Non-flame retarded dual wall heat-shrinkable polyolefin sleeving- thick and medium wall | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K15 | | Classification of International Standard | 29.035.20 | | Word Count Estimation | 14,171 | | Date of Issue | 2023-05-23 | | Date of Implementation | 2023-12-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 42734-2023: Non-flame retarded dual wall heat-shrinkable polyolefin sleeving- thick and medium wall
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ICS 29:035:20
CCSK15
National Standards of People's Republic of China
Medium-thick non-flame retardant double-wall polyolefin heat shrinkable tube
mediumwal
Sheet247: Heat-shrinkable, polyolefinsleeving, dualwal, notflame
retarded, thick and medium wal, MOD)
Released on 2023-05-23
2023-12-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Management Committee
table of contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Test conditions 1
5 Technical Requirements 1
5:1 General requirements 1
5:2 General requirements and performance requirements 1
5:3 Breakdown voltage requirements 2
6 Test method 3
6:1 Inner diameter, wall thickness and concentricity 3
6:2 Thermal Shock 3
6:3 Length change 3
6:4 Low temperature bendability 3
6:5 Tensile strength and elongation at break4
6:6 Secant modulus under 2% elongation4
6:7 Breakdown voltage 4
6:8 Volume resistivity 4
6:9 Fluid resistance4
6:10 Thermal aging 4
6:11 Long-term thermal aging 4
6:12 Carbon black content 4
6:13 Hardness 4
6:14 Water absorption 4
6:15 Peel strength4
7 Inspection rules 5
7:1 Inspection classification 5
7:2 Inspection item 5
7:3 Batch rules and sampling plan 6
7:4 Judgment rule 6
8 Labeling, packaging, transportation and storage 6
8:1 Flag 6
8:2 Packaging 7
8:3 Transport and storage 7
Appendix A (Informative) Inner diameter and wall thickness 8
Table 1 Performance requirements 2
Table 2 breakdown voltage requirements 3
Table 3 Selection of fluid requirements 3
Table 4 factory inspection 5
Table 5 Type inspection 5
Table A:1 Inner diameter and wall thickness (middle wall) 8
Table A:2 Inner diameter and wall thickness (thick wall) 9
foreword
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 is modified to adopt IEC 60684-3-247:2019 "Insulated hoses Part 3: Specifications for various types of hoses Part 247: Medium
Thick-Wall Non-Flame-Retardant Double-Wall Polyolefin Heat-Shrinkable Tubing":
Compared with IEC 60684-3-247:2019, this document has made the following structural adjustments:
--- The chapter "Terms and Definitions" has been added;
---Chapter 5 corresponds to Chapter 1, Chapter 6, Table 1~Table 3 and the notes and footnotes in Table 2 of IEC 60684-3-247:2019, where
5:1 corresponds to the third paragraph to the sixth paragraph of Chapter 1 of IEC 60684-3-247:2019, and paragraph 5:2 corresponds to IEC 60684-3-247:2019
Chapter 6, 5:3 corresponds to the notes and footnotes in Table 2;
---Chapter 6 corresponds to the test method in column 2 and the remarks in column 6 in Table 1 of IEC 60684-3-247:2019;
---7:4 The third paragraph corresponds to Chapter 7 of IEC 60684-3-283:2010:
The technical differences between this document and IEC 60684-3-247:2019 and their reasons are as follows:
--- Deleted the normative references "IEC 60757:1983" and "ISO 11357-3:2018" to meet my country's national conditions and facilitate application;
--- The chapter "Naming" has been deleted to conform to my country's national conditions and facilitate application;
--- Deleted "storage dimensional stability" and "melting point" to meet my country's national conditions and facilitate application;
--- Added the normative reference "GB/T 2828:1-2012" (see 7:3) to meet the technical conditions of our country and facilitate the application;
--- IEC 60296:2012 is replaced by GB 2536-2011 with normative references (see Table 3), the consistency program between the two documents
The degree is modified to meet the technical conditions of our country and facilitate the application;
--- Replaced IEC 60684-2:2011 (see Chapter 6) with the normatively referenced GB/T 7113:2-2014, between the two documents
The degree of consistency is modified to meet the technical conditions of our country and facilitate application;
--- Changed the "length change", changed "-10" to the minimum value and changed 5 to the maximum value (see Table 1), in order to comply with my country's technical
Technical conditions, easy to apply;
--- Increase the test temperature tolerance of "low temperature bendability" and the completion test time of "fluid resistance" (see 6:4 and 6:9) to comply with
In line with our country's national conditions, easy to apply;
--- The chapter "Inspection Rules" (see Chapter 7) has been added to meet the technical conditions of our country and facilitate application;
--- The chapter "Signs, packaging, transportation and storage" (see Chapter 8) has been added to meet the technical conditions of our country and facilitate application;
--- Deleted the references to conform to my country's national conditions and facilitate application:
The following editorial changes have been made to this document:
--- In order to coordinate with the existing standards, change the name of the standard to "Medium-thick-wall non-flame-retardant double-wall polyolefin heat-shrinkable tube";
--- The unit "K" is replaced by the unit "℃":
Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents:
This document is proposed by China Electrical Equipment Industry Association:
This document is under the jurisdiction of the National Standardization Technical Committee of Insulation Materials (SAC/TC51):
This document is drafted by: Shenzhen Wall Nuclear Material Co:, Ltd:, Shenzhen Hongshang Material Technology Co:, Ltd:, Guangzhou Kaihengke
Plastic Co:, Ltd:, Dalian United Polymer Materials Co:, Ltd:, Shenzhen Gongchuang Polymer Materials Technology Co:, Ltd:, Changchun Zhongke Yinghua Special Materials
Materials Co:, Ltd:, Shanghai Pioneer Irradiated Products Factory Co:, Ltd:, Shanghai Changyuan Electronic Materials Co:, Ltd:, Changyuan Electronics (Dongguan) Co:, Ltd:
Division, Dongguan Sanlian Heat Shrinkable Material Co:, Ltd:, Guilin Electrical Appliance Science Research Institute Co:, Ltd:
The main drafters of this document: Liu Zhanli, Zhong Xiaoguang, Hu Hui, Wang Rui, Mao Xinyuan, Wang Haibo, Jiang Jianming, Tu Wenmin, Zhang Zengguo, Wang Zhi,
Zhai Yongai, Liu Xiaobo, Cui Jianguo, Ma Linquan:
Medium-thick non-flame retardant double-wall polyolefin heat shrinkable tube
1 Scope
This document specifies the technical requirements, test methods, inspection rules and marking, packaging,
Transport and storage:
This document applies to medium-thick non-flame-retardant double-wall polyolefin heat-shrinkable tubing with a nominal shrinkage ratio of 3:1 and a maximum service temperature of 100°C:
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references
For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
this document:
GB/T 2411-2008 Determination of indentation hardness (Shore hardness) of plastics and hard rubber using a durometer (ISO 868:2003, IDT)
GB 2536-2011 Unused mineral insulating oils for electrical fluid transformers and switches (IEC 60296:2003, MOD)
GB/T 2828:1-2012 Counting sampling inspection procedure Part 1: Batch-by-batch inspection sampling retrieved by acceptance quality limit (AQL)
Plan (ISO 2859-1:1999, IDT)
GB/T 7113:1-2014 Insulating hoses - Part 1: Definitions and general requirements (IEC 60684-1:2003, MOD)
Note: There is no technical difference between the referenced content of GB/T 7113:1-2014 and the referenced content of IEC 60684-1:2003:
GB/T 7113:2-2014 Insulating hoses - Part 2: Test methods (IEC 60684-2:2003, MOD)
GB/T 33047:1-2016 Plastic polymer thermogravimetric method (TG) Part 1: General principles (ISO 11358-1:2014, MOD)
Note: There is no technical difference between the referenced content of GB/T 33047:1-2016 and the referenced content of ISO 11358-1:2014:
3 Terms and Definitions
This document does not have terms and definitions that need to be defined:
4 Test conditions
In the absence of regulations, medium-thick non-flame-retardant double-wall polyolefin heat-shrinkable tubing should be placed in an oven with forced air circulation at:200 ° C ±
The test was performed after shrinking for 10min±1min at 3°C:
5 Technical Requirements
5:1 General requirements
Medium-thick-walled non-flame-retardant double-walled polyolefin heat-shrinkable tubing is divided into Type A (medium-walled) and Type B (thick-walled), and the inner diameter is usually not more than:200mm:
It is generally black, and the inner diameter and wall thickness are shown in Appendix A, which can also be determined through negotiation between the supplier and the buyer: In special applications, the selection of materials should meet
In addition to the requirements of this document, the performance requirements of the application shall also be met:
5:2 General and performance requirements
In addition to the general requirements stipulated in GB/T 7113:1-2014, medium-thick non-flame-retardant double-wall polyolefin heat shrinkable tubes should also meet the
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