QB/T 4041-2010 in English

Polytetrafluoroethylene rod

1 Scope

This standard specifies the types & specifications, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of polytetrafluoroethylene rod (hereafter referred to as “rod”).

This standard is applicable to rods formed by molding, paste extrusion or plunger extrusion of unfilled polytetrafluoroethylene resin (including recycled polytetrafluoroethylene resin) which is used for making gaskets, seals and lubricating materials working in various corrosive media, and electrical insulation parts used at various frequencies.

2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding any corrigendum), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the latest editions of the standards indicated below. For undated references, the latest edition applies.

GB/T 1033.1-2008 Plastics - Methods for determining the density of non-cellular plastics - Part 1: Immersion method, liquid pyknometer method and titration method
GB/T 1040.2-2006 Plastics - Determination of tensile properties - Part 2: Test conditions for moulding and extrusion plastics
GB/T 1408.1-2006 Insulating materials - Test methods for electric strength - Part 1: Tests at power frequencies
GB/T 2828.1-2003 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 2918-1998 Plastics - Standard atmospheres for conditioning and testing

3 Types & specifications

3.1 Types

Rod types: Type I-T, Type I-D and Type II.

Foreword i
1 Scope
2 Normative references
3 Types & specifications
4 Technical requirements
5 Test methods
6 Inspection rules
7 Marking, packaging, transportation and storage