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GB/T 17037.1-2019 English PDF

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GB/T 17037.1-2019: Plastics -- Injection moulding of test specimens of thermoplastic materials -- Part 1: General principles, and moulding of multipurpose and bar test specimens
Status: Valid

GB/T 17037.1: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 17037.1-2019English599 Add to Cart 6 days [Need to translate] Plastics -- Injection moulding of test specimens of thermoplastic materials -- Part 1: General principles, and moulding of multipurpose and bar test specimens Valid GB/T 17037.1-2019
GB/T 17037.1-1997English639 Add to Cart 3 days [Need to translate] Injection moulding of test specimens of thermoplastic materails. Part 1: General principles and moulding of multipurpose and bar test specimens Obsolete GB/T 17037.1-1997

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Basic data

Standard ID GB/T 17037.1-2019 (GB/T17037.1-2019)
Description (Translated English) Plastics -- Injection moulding of test specimens of thermoplastic materials -- Part 1: General principles, and moulding of multipurpose and bar test specimens
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G31
Classification of International Standard 83.080.20
Word Count Estimation 30,328
Date of Issue 2019-05-10
Date of Implementation 2020-04-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 17037.1-2019: Plastics -- Injection moulding of test specimens of thermoplastic materials -- Part 1: General principles, and moulding of multipurpose and bar test specimens


---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.
Plastics--Injection moulding of test specimens of thermoplastic materials--Part 1. General principles, and moulding of multipurpose and bar test specimens ICS 83.080.20 G31 National Standards of People's Republic of China Replace GB/T 17037.1-1997 Preparation of injection molded samples of plastic thermoplastic materials Part 1. General principles and multi-purpose specimens and Preparation of long strip samples Part 1. Generalprinciples, andmouldingofmultipurposeandbartestspecimens (ISO 294-1..2017, MOD) Published on.2019-05-10 2020-04-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 equipment 4 5 Step 9 6 Sample Preparation Report 10 Appendix A (informative) Flow path layout example 12 Appendix B (informative) Partial standards for plastic injection mold parts 13 Appendix C (informative) Injection Mold Example 14 Appendix D (informative) How to set injection parameters 15 Appendix E (informative) Determination method of holding pressure and holding time 19 Reference 24

Foreword

GB/T 17037 "Preparation of injection molded samples of plastic thermoplastic materials" is divided into five parts. --- Part 1. General principles and preparation of multi-purpose and long strip samples; --- Part 2. Small tensile specimens; --- Part 3. Small square test piece; ---Part 4. Determination of mold shrinkage; --- Part 5. Preparation of standard samples for anisotropic evaluation. This part is the first part of GB/T 17037. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 17037.1-1997 "Preparation of injection molded specimens of thermoplastic materials - Part 1. General principles and multipurpose Preparation of sample and strip samples. Compared with GB/T 17037.1-1997, the main technical changes except editorial changes are as follows. --- Added the following terms and definitions. molded part quality (3.22), sample quality (3.23), shrinkage ratio (3.24) and cavity pressure (3.25); --- Revised the sample type code according to the provisions of GB/T 37426; --- Increased the setting method of injection molding machine parameters (see Appendix D); --- Increased the method of determining the holding pressure and holding time (see Appendix E). This section uses the redrafting method to modify the use of ISO 294-1.2017 "plastic thermoplastic materials injection molding sample preparation 1 Part. General principles and preparation of multi-purpose and long strip samples. The technical differences between this part and ISO 294-1.2017 and their reasons are as follows. ---About the normative reference documents, this standard has made technical adjustments to adapt to China's technical conditions, adjustments The situation is reflected in Chapter 2, “Regulatory Citations”, and the specific adjustments are as follows. ● Replace ISO 179-1 with GB/T 1043.1 equivalent to the international standard; ● Replace ISO 294-4 with GB/T 17037.4 equivalent to the international standard; ● Replace ISO 20753 with GB/T 37426 modified to international standards. This section has made the following editorial changes. --- Give the URL information of the ISO and IEC maintenance terminology database in Chapter 3 Terms and Definitions as a note. Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying these patents. 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). This section was drafted. China Petroleum and Chemical Corporation Beijing Yanshan Branch Resin Application Institute, Beijing Huasu Chenguang Technology Limited Liability Company, Tongdao Technology Chengdu Co., Ltd., China Petroleum & Chemical Corporation Beijing Beihua Institute Yanshan Branch, Zhonglan Chenguangcheng All Testing Technology Co., Ltd., Beijing Yanshan Petrochemical High-tech Co., Ltd. The main drafters of this section. Chen Hongyuan, Zheng Huiqin, Liu Huansheng, Wang Chaoxian, Chen Minjian, Zhang Changyi, Wang Shaopeng, Yu Yang, Wang Zhe. The previous versions of the standards replaced by this section are. ---GB/T 17037.1-1997.

Introduction

During the injection molding process, many factors can affect the performance of the injection molded specimen and the measured values of the various tests obtained with this specimen. Preparation note The injection molding conditions used in the plastic sample process have a great influence on the mechanical properties of the sample. Give exact to each major parameter of the injection molding process The definition is the basic requirement for standardization, which makes the operating conditions reproducible and comparable, see references [1], [2], [4], [5] and [6]. When determining the injection molding conditions, it is important to consider the effect that the injection molding conditions may have on the properties of the material being measured. In thermoplastics, there is no fixed Shaped polymers can exhibit different molecular chain orientations; crystalline and semi-crystalline polymers can exhibit different crystalline forms; heterogeneous heat Plastic plastics can exhibit different phases; anisotropic filler materials, such as short fibers, can also exhibit different orientations, see references [3]. The residual stress in the "frozen" injection molded specimen and the thermal degradation in the injection molding process may also affect the performance of the specimen. Therefore, it must These phenomena must be controlled to avoid fluctuations in the test performance values of the samples. Special care must be taken to ensure that the GB /ISO standard mold description requirements apply to all injection molding equipment and all replaceable types. Cavity plate. Preparation of injection molded samples of plastic thermoplastic materials Part 1. General principles and multi-purpose specimens and Preparation of long strip samples

1 Scope

This part of GB/T 17037 gives the general principles followed by injection molding of thermoplastic materials and is given for the preparation of two Detailed reference data for the mold design of the sample, such as the A1 and B1 specimens specified in GB/T 37426, provides reproducible injection molding The purpose of the condition is to provide a consistent description of the main parameters of the molding process and to establish a uniform method under the reported molding conditions. Sample The detailed conditions required for reproducibility preparation will vary depending on the materials used, as specified in the national standards for the relevant materials, or As agreed by the relevant parties. This section applies to thermoplastic materials injection molding to produce reproducible multi-purpose samples and long strip samples. Note. Experiments between laboratories of acrylonitrile/butadiene/styrene (ABS), styrene/butadiene (SB) and polymethyl methacrylate (PMMA) have shown that Mold design is one of the important factors to ensure the reproducibility of the sample.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 1043.1 Determination of impact properties of simply supported beams - Part 1 . Non-instrumental impact test (GB/T 1043.1- 2008, ISO 179-1.2000, IDT) Plastics -- Thermoplastics -- Preparation of injection mouldings - Part 3 . slabs ( ISO 294-3 . 2002, IDT) Plastics -- Injection moulding of thermoplastics -- Part 4 . Determination of moulding shrinkage (GB/T 17037.4-2003, ISO 294-4.2001, IDT) GB/T 37426 plastic sample (GB/T 37426-2019, ISO 20753.2018, MOD) Plastics -- Thermoplastics materials -- Preparation of injection mouldings - Part 2 . Small tensile specimens (Plastics-Injection Mouldingoftestspecimensofthermoplasticmaterials-Part 2.Smaltensilebars)

3 Terms and definitions

The following terms and definitions apply to this document. Note. ISO and IEC maintain the terminology database with the following URL. 3.1 Mold temperature mouldtemperature TC After the mold system reaches thermal equilibrium, the mold is opened and the average temperature of the mold cavity surface measured immediately is measured in degrees Celsius (°C).

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