EN 3094:2017

Aerospace series - Sealants - Test method - Determination of the application time

This European Standard specifies two methods for the determination of the application time of sealants.

Luft- und Raumfahrt - Dichtmassen - Prüfverfahren - Bestimmung der Verarbeitungszeit

Série aérospatiale - Produits d'étanchéité - Méthode d'essai - Détermination du temps d'application

Aeronavtika - Tesnilne mase - Preskusne metode - Določitev časa obdelave

Ta evropski standard določa metodi za določanje časa obdelave tesnilnih mas.

General Information

• Status: Published
• Publication Date: 17-Oct-2017
• Withdrawal Date: 29-Apr-2018
• ICS: 49.025.99 - Other materials
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 4/WG 16 - Sealants (Mastics)
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 18-Oct-2017
• Completion Date: 18-Oct-2017
• Ref Project: SIST EN 3094:2017 - Aerospace series - Sealants - Test method - Determination of the application time

Overview

EN 3094:2017 is a European Standard developed by CEN that specifies reliable test methods for determining the application time of aerospace sealants. This standard is part of the aerospace series focusing on sealants, critical materials used for sealing and bonding in aircraft and spacecraft structures. Understanding and controlling the application time is essential to ensure optimal performance and handling during assembly and maintenance.

This standard defines two distinct methods for application time determination based on the sealant’s viscosity range, supporting consistent quality control and compliance within the aerospace industry.

Key Topics

• Scope and Purpose
  EN 3094:2017 applies to the determination of the application time-the period after mixing when a sealant can still be applied effectively at a controlled temperature and humidity.

• Two Test Methods

  • Method A (Viscosity Measurement): Suitable for sealants with viscosity under 75 Pa·s. It uses a Brookfield viscometer or equivalent to measure viscosity following ISO 2555 guidelines.
  • Method B (Extrusion Measurement): Designed for sealants with viscosity above 75 Pa·s. It measures the mass of sealant extruded through a nozzle using an application gun under specified air pressure.

• Standardized Conditions
  Sealants and curing agents must be conditioned at (23 ± 2) °C in closed containers before testing to ensure reproducibility.

• Detailed Procedures
  Each method defines precise steps for sample preparation, measurement, and calculation of results to provide accurate and repeatable determination of application time.

• Reporting Requirements
  The standard outlines mandatory information for test reports, including batch details, environmental conditions, test apparatus specifications, and compliance results.

Applications

• Aerospace Manufacturing and Assembly
  Ensuring the correct application time of sealants leads to improved adhesion, defect reduction, and longevity of aerospace components.

• Quality Control and Validation
  Aerospace suppliers and manufacturers utilize EN 3094:2017 test methods to validate sealant batches and verify compliance with material specifications.

• Sealant Development and Certification
  Materials developers apply these test methods during R&D to optimize cure times and handling properties of new sealants for aerospace use.

• Maintenance and Repair Operations
  Predictable application times are crucial for in-field repairs, where timing affects the ease of application and seal effectiveness.

Related Standards

• ISO 2555:1989 - Plastics-Determination of apparent viscosity by the Brookfield test method, referenced for viscosity measurements in EN 3094:2017.

• Aerospace Material Standards - Other ASD-STAN and CEN standards relating to sealants, adhesives, and aircraft material testing.

• National Implementations - EN 3094:2017 is mandated for adoption by all CEN member countries, harmonizing safety and quality criteria across Europe.

---

Keywords: EN 3094:2017, aerospace sealants, application time determination, sealant viscosity, sealant extrusion test, CEN standard, aerospace material testing, sealant quality control, aerospace manufacturing standards.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.EGHODYHLuft- und Raumfahrt - Dichtmassen - Prüfverfahren - Bestimmung der VerarbeitungszeitSérie aérospatiale - Produits d'étanchéité - Méthode d'essai - Détermination du temps d'applicationAerospace series - Sealants - Test method - Determination of the application time49.025.99Drugi materialiOther materialsICS:Ta slovenski standard je istoveten z:EN 3094:2017SIST EN 3094:2017en,fr,de01-december-2017SIST EN 3094:2017SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 3094
October
t r s y ICS
v {ä r t wä { { English Version
Aerospace series æ Sealants æ Test method æ determination of the application time Série aérospatiale æ Produits d 5étanchéité æ Méthode d 5essai æ Détermination du temps d 5application
Luftæ und Raumfahrt æ Dichtmassen æ Prüfverfahren æ Bestimmung der Verarbeitungszeit This European Standard was approved by CEN on
t x June
t r s yä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
u r { vã t r s y ESIST EN 3094:2017
...