GB/T 30923-2022Plastics—Polypropylene (PP) materials for meltblown (English PDF)

1 Scope

This document specifies the classification and naming, requirements, test methods, inspection rules, marks and accompanying documents of polypropylene (PP) melt blown special materials and packaging, transportation and storage.

This document is applicable to homopolypropylene as raw material, di-tert-butyl peroxide (DTBP) or 2,5-dimethyl-2,5-di(tert-butyl peroxide) oxy)hexane (DBPH) as a degradation agent, the granular polypropylene melt-blown special material obtained by degradation;

Powdered polypropylene melt-blown special material prepared by compounding and adding additives.

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 1636 Determination of the apparent density of plastic materials that can flow out of a specified funnel

GB/T 1844.1 Plastic symbols and abbreviations Part 1.Basic polymers and their characteristic properties

GB/T 2035 Plastic terms and their definitions

GB/T 2546.1 Plastics Polypropylene (PP) Molding and Extrusion Materials Part 1.Nomenclature System and Classification Basis

GB/T 2547 plastic sampling method

GB/T 2914 Determination of volatile matter (including water) in plastic vinyl chloride homopolymer and copolymer resin

GB/T 2918 Standard environment for conditioning and testing of plastic specimens

GB/T 3682.1 Determination of melt mass flow rate (MFR) and melt volume flow rate (MVR) of plastic thermoplastics

Part 1.Standard methods

GB/T 8170 Numerical rounding off rules and expression and determination of limit values

GB/T 9345.1 Determination of ash content in plastics - Part 1.General method

GB/T 9348 Determination of the number of impurities and foreign particles in plastic polyvinyl chloride resin

GB 15979 Hygienic Standards for Disposable Sanitary Products

GB/T 24149.2-2017 Polypropylene (PP) special materials for plastic automobiles Part 2.Instrument panels

GB/T 36214.4 Determination of average molecular weight and molecular weight distribution of polymers by size exclusion chromatography on plastics - Part 4.High warm method

JB/T 5456 Melt flow rate instrument technical specification

SH/T 1541.1 Appearance test methods for plastic granules - Part 1.Visual inspection

3 Terms and Definitions

The terms and definitions defined in GB/T 1844.1, GB/T 2035 and SH/T 1541.1 apply to this document.