ISO 8620-1986 PDF

Full title and description

Plastics — Phenolic resin powder — Sieve analysis using air-jet sieve apparatus. This International Standard specifies a laboratory method for determining sieve retention and the particle-size distribution of phenolic (phenoplast) resin powders by means of an air-jet (air-jet/air-suction) sieve apparatus.

Abstract

ISO 8620:1986 defines a procedure and apparatus requirements for granulometric analysis of phenolic resin powders using an air-jet (air-suction) sieve. The standard describes the air‑jet sieve assembly, typical operating parameters, sample handling and recording of results to report sieve retention and particle-size distribution succinctly.

General information

• Status: Withdrawn.
• Publication date: 03 September 1986 (Edition 1, published September 1986).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 83.080.10 (Plastics — testing and characterization).
• Edition / version: Edition 1 (1986).
• Number of pages: 2.

Scope

This standard gives a method for the determination of sieve retention and the granulometric distribution of phenolic resin powders when sieved on an air-jet sieve apparatus. It specifies the type of air‑jet/suction sieve assembly and operating considerations to maintain particles in suspension and allow fines to pass through the test sieve while coarser material is retained for weighing and calculation of percentage retained.

Key topics and requirements

• Definition and purpose: determination of sieve retention and particle-size distribution for phenolic (phenoplast) resin powders.
• Apparatus description: air‑jet (air‑suction) sieve housing with a circular test sieve and a rotating nozzle or slot that directs a thin jet of air beneath the sieve to keep particles suspended and facilitate passage of fines.
• Typical operating parameter: air volume through the apparatus specified in the standard is in the order of 48 to 58 m3/h (adjustable by the suction/pressure control).
• Sample handling: mass of sample, pre-treatment and any antistatic measures, sieving time and control of conditions to ensure repeatability.
• Calculations and reporting: sieve retention per fraction reported as a percentage of the test sample, and presentation of particle-size distribution data and test conditions in the test report.

Typical use and users

Used by laboratories, quality control departments and material suppliers working with phenolic resin powders (for adhesives, molding compounds and other phenolic-based products) to characterize particle-size distribution and ensure batch-to-batch consistency for processing and product performance.

Related standards

Standards on air‑jet sieve methods for other polymer powders and on test sieves are related, for example ISO 4610 (air‑jet sieve method for vinyl chloride homopolymers/copolymers) and ISO 565 (test sieves — woven wire cloth and perforated plate — nominal sizes of apertures). ISO 8620:1986 has been withdrawn and cross-referenced in the ISO lifecycle to related air‑jet sieve standards in the plastics sector.

Keywords

phenolic resin powder, phenoplast, air‑jet sieve, sieve analysis, particle-size distribution, sieve retention, granulometry, ISO 8620:1986

FAQ

Q: What is this standard?

A: ISO 8620:1986 is an ISO International Standard titled "Plastics — Phenolic resin powder — Sieve analysis using air-jet sieve apparatus" that specifies a method for sieve analysis of phenolic resin powders using an air‑jet/air‑suction sieve.

Q: What does it cover?

A: It covers the air‑jet sieve apparatus configuration and operating considerations, sample handling and the procedure to determine sieve retention and report the particle-size distribution of phenolic resin powders.

Q: Who typically uses it?

A: Test laboratories, material suppliers, and quality control or R&D teams in industries using phenolic resins (molding compounds, adhesives, coatings, etc.) use this method to characterise powder granulometry.

Q: Is it current or superseded?

A: ISO 8620:1986 has been withdrawn (withdrawal recorded in ISO lifecycle activity in 1997). It is not an active current ISO publication and users should consult more recent or relevant air‑jet sieve standards for up-to-date methods applicable to their polymer type and application.

Q: Is it part of a series?

A: It belongs to ISO work on plastics testing and granulometric methods; related ISO standards include other air‑jet sieve methods for different polymer types (for example ISO 4610 for vinyl chloride resins) and general test-sieve standards such as ISO 565.

Q: What are the key keywords?

A: Phenolic resin powder; sieve analysis; air‑jet sieve; granulometry; particle-size distribution; sieve retention; ISO 8620.