GB/T 25278-2010 English PDF

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GB/T 25278-2010: Plastics -- Determination of the fluidity of plastics using capillary and slit-die rheometers
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 25278-2010	719	Add to Cart	6 days	Plastics -- Determination of the fluidity of plastics using capillary and slit-die rheometers	Valid

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Basic data

Standard ID: GB/T 25278-2010 (GB/T25278-2010)
Description (Translated English): Plastics -- Determination of the fluidity of plastics using capillary and slit-die rheometers
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G31
Classification of International Standard: 83.080.01
Word Count Estimation: 31,339
Date of Issue: 2010-09-26
Date of Implementation: 2011-08-01
Quoted Standard: GB/T 3505-2009; GB/T 3682-2000; GB/T 4340.1-2009; GB/T 6379.2-2004; ISO 11403-2-2004
Adopted Standard: ISO 11443-2005, MOD
Regulation (derived from): National Standard Approval Announcement 2010 No.6 (Total No.161)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the process in the plastic shear rate and temperature conditions, method of measuring melt flow under shear stress. As the plastic melt flow is not only dependent on the temperature, but also on other parameters. In particular, the shear stress and shear rate, and therefore it is necessary to establish the method. This standard applies to the determination of the melt viscosity range 10Pas ~ 107Pas, which depends on the pressure and (or) the measurement range of the force sensor and mechanical and physical properties of the rheometer. Shear rate generated by the extrusion rheometer is 1s-1 ~ 106s-1. Stretching effect caused by the entrance to the die exit extrusion die swell, the standard also includes a method for assessing die swell. This standard rheological testing technology involved is not limited to thermoplastics characterization wall adhesion, if " wall slip " effect of thermoplastics, thermosetting plastics can also be applied to characterize. This standard does not apply to non- adhesive material of the wall shear rate and shear viscosity determination. However, these can be used to characterize the rheological behavior of a certain geometry of the flow channel.

GB/T 25278-2010: Plastics -- Determination of the fluidity of plastics using capillary and slit-die rheometers

---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.Determination of the fluidity of plastics using capillary and slit-die rheometers ICS 83.080.01 G31 National Standards of People's Republic of China Plastics using capillary and slit die rheometer Plastic flowability (ISO 11443.2005, MOD) Issued on. 2010-09-26 2011-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Preface Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 Fundamentals 4 5 Apparatus 4 Sampling 6 9 Step 9 7 The results are shown 11 8 9 Precision 17 10 18 Test Report Methods Appendix A (informative) Correction H/B on the apparent shear rate on 20 Annex B (informative) Measurement error 21 Annex C (informative) capillary extrusion rheological test shear viscosity measurement uncertainty 22 Appendix D (Informative Appendix) ISO 11443.2005 26 precision References 27

Foreword

This revised standard adopts ISO 11443.2005 "Plastics - Determination of the capillary and slit die rheometer plastic liquidity" (In English). This standard and ISO 11443.2005 is the main technical difference. --- Chapter 2 adds normative references. GB/T 6379.2-2004; --- Chapter 9 to the precision of the data, the ISO 11443.2005 as the precision of the standard informative Appendix D. For ease of use, this section made the following editorial changes. --- Remove the ISO 11443.2005 Foreword; --- Increase the national standard foreword; --- Of ISO 11443.2005 international standard referenced with the international standard has been adopted as the standard instead of the corresponding country, not Direct reference to international standards for our standards. The Standard Appendix A, Appendix B, Appendix C and Appendix D is an informative annex. The standard proposed by China Petroleum and Chemical Corporation. This standard by the National Standardization Technical Committee plastic plastic resins and petrochemical products Club (SAC/TC15/SC1) centralized. This standard is drafted by. China Petroleum and Chemical Corporation Beijing Yanshan Company Resin Application Research Institute. Participated in the drafting of this standard. Tianjin University. The main drafters of this standard. Zheng Huiqin, Yang Lili, Lijing Qing, Zeng Li, Wang Xiaoli, Lijing Qing, Wang Ling Xiao. Plastics using capillary and slit die rheometer Plastic flowability

1 Scope

This standard specifies in plastics processing shear rate and temperature conditions, the method of determination of melt flow shear stress. As the plastic melt flow depends not only on temperature but also on other parameters, in particular shear stress and shear rate, thus establishing This method is necessary. This standard applies to the determination of the melt viscosity range of 10Pa · s ~ 107Pa · s, depending on the pressure measurements and (or) force sensor Mechanical and physical properties as well as the range of the rheometer, shear rate range of extrusion rheometer produced for 1s-1 ~ 106s-1. Effects of drawing die entrance cause the die exit die swell, this standard also includes a method for assessing extrudate swell. This standard relates to rheological testing technology is not limited to thermoplastics characterized wall adhesion, if the thermoplastic plastic "wall slip" effect Material [1], [2], it can be applied to characterize thermosets. This standard does not apply to non-wall shear rate and shear viscosity of the adhesive material used in the determination But these can be used to characterize the rheological behavior of a certain geometry of the flow channel. Note. The test can not occur during the curing reaction.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 3505-2009 Geometrical product specifications (GPS) Surface texture Profile method - Terms, definitions and structure parameters (ISO 4287.1997, IDT) GB/T 3682-2000 quality thermoplastic melt flow rate and melt volume flow rate measurement (idtISO 1133. 1997) Test Method. GB/T 4340.1-2009 Vickers hardness test - Part 1 (ISO 6507-1.2005, MOD) GB/T 6379.2-2004 measurement methods and results of Accuracy (trueness and precision) - Part 2. Determination of the standard measurement direction Method repeatability and reproducibility of the basic method (ISO 5725-2.1994, IDT) ISO 11403-2.2004 Plastics obtain comparable and represents the second part of the multi-point data. Thermal and processing properties

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 Newtonian fluid Newtonianfluid Fluid viscosity is not dependent on shear rate and time. 3.2 Non-Newtonian fluid non-Newtonianfluid Viscosity with shear rate and (or) time varies fluid. Note. Non-Newtonian fluid as defined in this standard refers only to changes in viscosity with shear rate of the fluid. ......

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