GB/T 39714.2-2020Plastics - Polytetrafluoroethylene(PTFE)semi-finished products - Part 2: Preparation of test specimens and determination of properties (English PDF)

Foreword

GB/T 39714 "plastic polytetrafluoroethylene (PTFE) semi-finished products" is divided into two parts:

---Part 1: Requirements and naming;

---Part 2: Sample preparation and performance measurement:

This part is Part 2 of GB/T 39714:

This section was drafted in accordance with the rules given in GB/T 1:1-2009:

This part adopts the redrafting method to amend and adopt ISO 13000-2:2005 "Plastic polytetrafluoroethylene (PTFE) semi-finished products Part 2

Sub: Sample Preparation and Performance Measurement:

Compared with ISO 13000-2:2005, this part has structural differences: The specific adjustments are as follows:

--- Added normative Appendix B (see Appendix B):

Compared with ISO 13000-2:2005, there are technical differences in this part: The terms of these differences have been passed on the outer margins:

The vertical single line (|) is marked: The main technical differences and their 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 1183 with GB/T 1033:1 equivalent to adopting international standards and GB/T 1033:2 modified to adopting international standards

(See 6:4);

* Replace ISO 527-2 with GB/T 1040:2, which is equivalent to the international standard (see 6:3:2);

* Replace ISO 527-3 with GB/T 1040:3, which is equivalent to the international standard (see 6:3:2);

* Replace IEC 60243-1 (see 6:8:1) with GB/T 1408:1 equivalent to the international standard;

* Replace IEC 60243-2 with GB/T 1408:2 equivalent to the international standard (see 6:8:1);

* Replace ISO 472 with GB/T 2035 which is equivalent to the international standard (see Chapter 3);

* Replace ISO 868 with GB/T 2411 which is equivalent to the international standard (see 6:9);

* Replace ISO 2039-1 with GB/T 3398:1 which is equivalent to the international standard (see 6:9);

* Replace ISO 1923 with GB/T 6342 equivalent to the international standard (see 6:2);

* Replace ISO 13000-1 (see Chapter 3) with GB/T 39714:1 modified to adopt international standards;

* Replace ISO 4599 with ISO 22088-3 (see 6:12);

* Replace ISO 4600 with ISO 22088-4 (see 6:12);

* Deleted ASTMD621-64 (see Chapter 2 of ISO 13000-2:2005);

--- Replace ISO 12086-1 with ISO 20568-1 (see Appendix A);

--- Replace ISO 12086-2 with ISO 20568-2 (see Appendix A);

---Added the reference standard content in Appendix A (see Appendix A [1]~[4]):

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: Shanghai Institute of Materials, Shanghai Plastics Research Institute Co:, Ltd:, Zhejiang Jiari Fluoroplastic Co:, Ltd:, Shanghai Shang

Fluorine Materials Co:, Ltd:, Zhonglan Chenguang Chengdu Inspection Technology Co:, Ltd:, Liaocheng Fluor New Material Technology Co:, Ltd:, Liaocheng University:

1 Scope

This part of GB/T 39714 specifies the method for preparation and performance determination of semi-finished polytetrafluoroethylene samples:

This section applies to sample preparation and performance determination of semi-finished PTFE products:

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 document.

Pieces: For undated references, the latest version (including all amendments) applies to this document:

GB/T 1033:1-2008 Determination of the density of plastic non-foam plastics Part 1: Immersion method, liquid pycnometer method and titration method

(GB/T 1033:1-2008, ISO 1183-1:2004, IDT)

GB/T 1033:2-2010 Determination of the density of plastic non-foam plastics Part 2: Density gradient column method (GB/T 1033:2-

2010, ISO 1183-2:2004, MOD)

GB/T 1040:2 Determination of tensile properties of plastics Part 2: Test conditions for molding and extrusion plastics (GB/T 1040:2-

2006, ISO 527-2:1993, IDT)

GB/T 1040:3 Determination of tensile properties of plastics Part 3: Test conditions for films and sheets (GB/T 1040:3-2006,

ISO 527-3:1995, IDT)

GB/T 1408:1-2016 Insulating material electric strength test method Part 1: Test under power frequency (GB/T 1408:1-

2016, IEC 60243-1:2013, IDT)

GB/T 1408:2 Insulating material electric strength test method Part 2: Additional requirements for applied DC voltage test

(GB/T 1408:2-2016, IEC 60243-2:2013, IDT)

GB/T 2035 Plastic Terms and Definitions (GB/T 2035-2008, ISO 472:1999, IDT)

GB/T 2411 Plastics and hard rubber use a durometer to determine the indentation hardness (Shore hardness) (GB/T 2411-2008, ISO 868:

2003, IDT)

GB/T 3398:1 Plastic Hardness Determination Part 1: Ball Indentation Method (GB/T 3398:1-2008, ISO 2039-1:2001,

IDT)

GB/T 6342 Determination of linear dimensions of foam plastics and rubber (GB/T 6342-1996, ISO 1923:1981, IDT)

GB/T 39714:1 Plastic polytetrafluoroethylene (PTFE) semi-finished products Part 1: Requirements and naming (GB/T 39714:1-

2020, ISO 13000-1:2005, MOD)

ISO 3611 Product Geometric Technical Specification Dimensional Measuring Equipment: Micrometer Design and Metrological Characteristics for External Measurement

(Geometricalproductspecifications(GPS)-Dimensionalmeasuringequipment:Micrometersforex-

ternalmeasurements-Designandmetrologicalcharacteristics)

ISO 22088-3 Plastics environmental stress cracking resistance (ESC) performance determination part 3: bending strip method (Plastics-Determi-

nationofresistancetoenvironmentalstresscracking(ESC)-Part 3:Bentstripmethod)