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GB/T 17037.2-2020: Plastics. Injection moulding of test specimens of thermoplastic materials - Part 2: Small tensile bars
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| GB/T 17037.2-2020 | English | 129 |
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Plastics. Injection moulding of test specimens of thermoplastic materials - Part 2: Small tensile bars
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GB/T 17037.2-2020
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Basic data | Standard ID | GB/T 17037.2-2020 (GB/T17037.2-2020) | | Description (Translated English) | Plastics. Injection moulding of test specimens of thermoplastic materials - Part 2: Small tensile bars | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G31 | | Classification of International Standard | 83.080.20 | | Word Count Estimation | 7,792 | | Date of Issue | 2020-12-14 | | Date of Implementation | 2021-07-01 | | Quoted Standard | GB/T 17037.1-2019; GB/T 37426-2019 | | Adopted Standard | ISO 294-2-2018, MOD | | Regulation (derived from) | National Standard Announcement No. 28 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Summary | This standard specifies a four-cavity mold, namely C-type GB/ISO mold, which is used for injection molding of small tensile specimens. The specimen size is ��60 mmX10 mmX3 mm (GB/T 37426-2019 small and medium tensile specimens) CW13 type). This standard applies to the preparation of reproducible small tensile specimens by injection molding of thermoplastic materials. | GB/T 17037.2-2020: Plastics. Injection moulding of test specimens of thermoplastic materials - Part 2: Small tensile bars
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(Plastics:Preparation of injection molded specimens of thermoplastic materials:Part 2: Small tensile specimens)
ICS 83:080:20
G31
National Standards of People's Republic of China
Preparation of Injection Molding Specimen of Plastic Thermoplastic Materials
Part 2: small tensile specimen
(ISO 294-2:2018,MOD)
2020-12-14 release
2021-07-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Preface Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Device 1
5 Step 2
6 Sample preparation report 3
Reference 4
Foreword
GB/T 17037 "Preparation of Injection Molding Specimens of Plastic Thermoplastic Materials" is divided into five parts:
---Part 1: General principles and preparation of multi-purpose specimens and long strip specimens;
---Part 2: Small tensile specimen;
---Part 3: Small square test piece;
---Part 4: Determination of mold shrinkage;
---Part 5: Preparation of standard samples for anisotropy evaluation:
This part is Part 2 of GB/T 17037:
This section was drafted in accordance with the rules given in GB/T 1:1-2009:
This part uses the redrafting method to amend and adopt ISO 294-2:2018 ``Preparation of Plastic Thermoplastic Material Injection Specimen No: 2
Part: Small Tensile Specimen:
The technical differences between this part and ISO 294-2:2018 and the reasons are as follows:
---Regarding normative reference documents, this section has made adjustments with technical differences to adapt to my country's technical conditions and adjustments:
The situation is collectively reflected in Chapter 2 "Normative Reference Documents", and the specific adjustments are as follows:
● Replace ISO 294-1:2017 with GB/T 17037:1-2019 which is modified to adopt international standards;
● Replace ISO 20753:2018 with GB/T 37426-2019, which is modified to adopt international standards:
This part was proposed by the China Petroleum and Chemical Industry Federation:
This part is under the jurisdiction of the National Plastics Standardization Technical Committee (SAC/TC15):
Drafting organizations of this section: Beijing Huasu Chenguang Technology Co:, Ltd:, Tongrail Technology Chengdu Co:, Ltd:, Anhui Huaiyuan Kanghua Plastics
Products Co:, Ltd:, Zhonglan Chenguang Chemical Research and Design Institute Co:, Ltd:, Weihai Lianqiao New Material Technology Co:, Ltd:, People's Republic of China
Qingdao Dagang Customs, Shandong Dawn Polymer Materials Co:, Ltd:, Jiangmen Xinhui Henglong Household Innovation Co:, Ltd:, Guangzhou Quality
Supervise the inspection institute:
The main drafters of this section: Chen Hongyuan, Liu Huansheng, Yang Liankai, Wang Yan, Zhang Changyi, Cao Shufeng, Li Zhou, Hao Wenpeng, Nie Huayao, Wang Wanjuan:
Preparation of Injection Molding Specimen of Plastic Thermoplastic Materials
Part 2: small tensile specimen
1 Scope
This part of GB/T 17037 specifies a four-cavity mold, that is, a C-type GB /ISO mold, which is used for injection molding of small tensile specimens:
The sample size is ≥60mm×10mm×3mm (GB/T 37426-2019 small and medium tensile sample CW13 type):
This section applies to the preparation of reproducible small tensile specimens by injection molding of thermoplastic materials:
2 Normative references
The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article
Pieces: For undated references, the latest version (including all amendments) applies to this document:
GB/T 17037:1-2019 Preparation of injection molded specimens of plastic thermoplastic materials Part 1: General principles and multi-purpose tests
Preparation of samples and long strip samples (ISO 294-1:2017, MOD)
GB/T 37426-2019 plastic sample (ISO 20753:2018, MOD)
3 Terms and definitions
The terms and definitions defined in GB/T 17037:1-2019 apply to this document:
Note: ISO and IEC use the following website to maintain terminology databases:
---IEC World Online Electronic Technology Vocabulary: http://www:electropedia:org
---ISO online browsing platform: http://www:iso:org/obp
4 equipment
4:1 C-type GB /ISO mold
The C-type GB /ISO mold is a four-cavity mold with "double T-shaped runners" for preparing small tensile specimens: Small tensile specimens for research
When investigating the impact of environment (such as liquid chemicals, heat and climate, etc:) on plastics, determine representative properties (see GB/T 37188:3-
2019[1]): The size of the small tensile specimen prepared by the C type GB /ISO mold should be the same as the CW11 type specified in 6:4 of GB/T 37426-2019
The sample is the same, with a thickness of 3:0mm±0:2mm:
The main structural details of the C-type GB /ISO mold should be consistent with those shown in Figure 1, and should meet 4:1:1:4 of GB/T 17037:1-2019
The requirements in a)~n), but g) in 4:1:1:4 in GB/T 17037:1-2019 should meet the following requirements:
The sample size is shown in GB/T 37426-2019 CW13 type sample, for example, the main size of the sample should be:
Width of the middle part 3:0mm~3:1mm
Shoulder area radius 15mm~16mm
The thickness of the sample should be 3:0mm±0:2mm, that is, the depth of the sample cavity should be 3:0mm~3:2mm:
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