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GB/T 8333-2022: Plastic - Test method for flammability of rigid cellular plastic - Vertical burning method
Status: Valid GB/T 8333: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 8333-2022 | English | 199 |
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Plastic - Test method for flammability of rigid cellular plastic - Vertical burning method
| Valid |
GB/T 8333-2022
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| GB/T 8333-2008 | English | 319 |
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Test method for flammability of rigid cellular plastic -- Vertical burning method
| Obsolete |
GB/T 8333-2008
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| GB/T 8333-1987 | English | 319 |
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Test method for flammability of rigid cellular plastics--Vertical burning method
| Obsolete |
GB/T 8333-1987
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PDF similar to GB/T 8333-2022
Standard similar to GB/T 8333-2022 GB/T 8813 GB/T 9341 GB/T 7141 GB/T 8324 Basic data | Standard ID | GB/T 8333-2022 (GB/T8333-2022) | | Description (Translated English) | Plastic - Test method for flammability of rigid cellular plastic - Vertical burning method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G31 | | Classification of International Standard | 83.080.01 | | Word Count Estimation | 10,179 | | Date of Issue | 2022-12-30 | | Date of Implementation | 2023-07-01 | | Older Standard (superseded by this standard) | GB/T 8333-2008 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 8333-2022: Plastic - Test method for flammability of rigid cellular plastic - Vertical burning method
---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 83.080.01
CCSG31
National Standards of People's Republic of China
Replacing GB/T 8333-2008
Test method for combustion behavior of plastic rigid foamed plastics
vertical combustion method
Posted on 2022-12-30
2023-07-01 implementation
State Administration for Market Regulation
Released by the National Standardization Management Committee
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 replaces GB/T 8333-2008 "Test Method for Combustion Behavior of Rigid Foamed Plastics - Vertical Combustion Method", and is consistent with GB/T 8333-
Compared with.2008, except for structural adjustment and editorial changes, the main technical changes are as follows.
--- Changed the scope of application of the standard (see Chapter 1, Chapter 1 of the.2008 edition);
--- Added and updated relevant normative references (see Chapter 2, Chapter 2 of the.2008 edition);
--- Added the chapter "Terms and Definitions" (see Chapter 3);
--- Change "principle" to "overview" (see Chapter 4, Chapter 3 of the.2008 edition);
--- Changed the material and description of the combustion device (see 5.1, 4.1 of the.2008 edition);
---Changed the description of the timing device (see 5.2, 4.2 of the.2008 edition);
--- Changed the inner diameter and flame requirements of the Bunsen burner (see 5.3, 4.3 of the.2008 edition);
--- Changed the contents of the fume hood (see 5.5, 4.5 of the.2008 edition);
--- Changed the gauge length on the scale in Figure 1 and Figure 4 (see Figure 1 and Figure 4, Figure 1 and Figure 4 of the.2008 edition);
--- Increased the diameter of the nail on the sample holder in Figure 2 (see Figure 2);
--- Deleted the gauge length on the left side of the sample (side view) inserted in the sample holder in Figure 3 (see Figure 3 of the.2008 edition);
---Changed the precision of specimen width and thickness (see 6.1, 5.1 of the.2008 edition);
--- Change the relevant content of "Sample" in the.2008 edition and include it in the "Test procedure" (see 6.1, 6.2 and 6.3, Chapter 5 of the.2008 edition
and 6.1);
--- Changed the installation requirements for the aluminum foil on the inner wall of the chimney (see 6.7, 6.6 of the.2008 edition);
--- Changed the description of sample ignition (see 6.9 and 6.12, 6.8 and 6.10 of the.2008 edition);
--- Increased the number of samples for observing and recording burning drippings (see 6.11);
---Changed the letter symbols related to quality (see 7.1, 7.1 of the.2008 edition);
--- Changed the result representation (see 7.2, 7.2 of the.2008 edition);
--- Changed the content that the report should include (see Chapter 8, Chapter 8 of the.2008 edition).
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 Petroleum and Chemical Industry Federation.
This document is under the jurisdiction of the National Plastics Standardization Technical Committee (SAC/TC15).
This document was drafted by. Fujian Product Quality Inspection Research Institute, China Blue Chenguang Chemical Research and Design Institute Co., Ltd., Nanjing Jiangning Analysis
Instrument Co., Ltd., Qingdao Product Quality Inspection Research Institute, Abbott (Fujian) New Material Co., Ltd., Zhejiang Ruigao New Material Co., Ltd.
Company, Sinopec Beijing Research Institute of Chemical Industry, Guangzhou Institute of Quality Supervision and Testing, Suzhou Runjia Engineering Plastics Co., Ltd.
Co., Ltd., CGN Juner (Zhejiang) New Material Co., Ltd., Liaocheng University, Jilin Provincial Product Quality Supervision and Inspection Institute, National Plastic Quality
Quantitative Inspection and Testing Center (Fuzhou).
The main drafters of this document. He Yang, Xiao Xiao, Ji Zhuang, Wang Fuhai, Qiao Haiqing, Fu Ping, Gao Fei, Li Yongquan, Li Yetian, Wang Liwen, Zhang Lei,
Teng Mouyong, Li Shangyu, Zhang Chuanzhou.
This document was first released in 1987, revised for the first time in.2008, and this is the second revision.
Test method for combustion behavior of plastic rigid foamed plastics
vertical combustion method
Warning --- Toxic gas and high-temperature steam will be produced during the test, and appropriate precautions should be taken to protect test personnel.
1 Scope
This document describes the test method for rigid foamed plastics to determine the burning time, the height of the burning flame of the sample, and the percentage of residual mass.
This document applies to small-scale tests for evaluating the vertical burning behavior of rigid foamed plastics under laboratory conditions.
This document does not apply to materials that melt or drip during combustion.
This document is not suitable for assessing the fire hazard of materials under actual fire conditions, nor can it be used as an effective assessment of the fire hazard of materials.
the only basis for.
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 2035 Plastic terms and their definitions
GB/T 2918 Standard environment for conditioning and testing of plastic specimens
GB/T 5907.1 Firefighting Vocabulary Part 1.General Terms
GB/T 6343 Determination of apparent density of foamed plastics and rubber
3 Terms and Definitions
The terms and definitions defined in GB/T 2035 and GB/T 5907.1 apply to this document.
4 Overview
Fix the sample vertically in a chimney with a glass observation window, ignite it with a Bunsen burner for 10s, and record the burning time and burning time of the sample.
Flame height and residual mass percentage after combustion.
5 Instruments and equipment
5.1 Combustion device
It consists of a chimney and a sample holder whose dimensions conform to those shown in Figure 1, Figure 2, and Figure 3.The cross section of the chimney is rectangular, and the cylinder body is made of stainless steel.
The interior is lined with 0.025mm thick aluminum foil, and the front wall is a heat-resistant glass plate. The scale installed on one side of the heat-resistant glass plate is used to measure the flame height (see
Figure 1 and Figure 4), the bottom of the scale is 51mm higher than the bottom of the chimney, and the division value is 10mm. The sample holder is hung on the chimney by the hook on the back
Inside the channel, 3 nails on the specimen holder are used to mount the specimen.
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