GB/T 41956-2022Determination of fuzz mass for carbon fiber tow (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting.

Introduction

The issuing organization of this document draws attention to the fact that when declaring compliance with this document, it may involve the composition and technical requirements of the fuzz tester in 6.1 Use of patents related to "Carbon Fiber Fuzz Test Device and Measurement Method (ZL201610475439.9)".

The issuing authority of this document has no position regarding the veracity, validity and scope of this patent.

The patent holder has committed to the issuing authority of this document that he is willing to cooperate with any applicant on reasonable and non-discriminatory terms or conditions Next, negotiate the licensing of patents. The patent holder's statement is on file with the issuing authority of this document.

Please note that in addition to the above patents, some content of this document may still involve patents. The issuer of this document is not responsible for identifying patents responsibility. Determination of fluff amount of carbon fiber tow

1 Scope

This document specifies the test principle, test conditions, instruments and equipment, samples, test procedures and test data processing of carbon fiber tow fuzziness and test reports, etc.

This document is applicable to polyacrylonitrile-based carbon fiber tows of 1k~50k, and carbon fibers of other specifications can also be used as a reference.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 6343 Determination of apparent density of foamed plastics and rubber

GB/T 8813 Determination of compression properties of rigid foamed plastics

GB/T 26749 Determination of tensile properties of carbon fiber dipped yarn

GB/T 40724 Terminology of carbon fiber and its composite materials

3 Terms and Definitions

The terms and definitions defined in GB/T 40724 apply to this document.

4 Test Principle

The carbon fiber tow is stretched and thinned by the guide rod at a certain speed under the mechanical traction with the length measuring device, and then passed through a pair of A fuzz collecting material with normal load, which produces moderate friction on the unwound tow and collects the fuzz in the tow. Weighing fuzz collection The amount of fluff is obtained from the change in mass of the material before and after the fluff is collected.

5 Test conditions

Before the test, place the sample in a laboratory environment with a temperature of (23±2)°C and a relative humidity of (50±10)% for not less than 24h. exist Tested in the same environment.

6 Instruments and equipment