Cnep

Center National
for Evaluation of Photoprotection

Out scientific means

Chemical analysis and aging equipments

Polymer Durability

our aging devices

To carry out its research, the CNEP studies, develops and industrializes (in partnership with loudspeaker manufacturers) its own tools to accelerate aging.

some examples

SEPAP MHE
SEPAP 12.24
WEATHER OMETER
Ventilated and climate ovens
Thermostatic baths
Stress machine
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  • Accelerated artificial photoaging chambers under anhydrous conditions: SEPAP 12.24 (30), SEPAP MHE (2)
  • Accelerated artificial photoaging chambers in aqueous conditions: SEPAP 12.24H (3)
  • Ultra-Accelerated Artificial Photoaging devices: SEPAP 50.24 (2), SEPAP MHE (2)
  • Environmental Stress Simulation device: ATLAS CI4000 Weather-O-Meter (1)
  • Climatic chambers: Vötsch VC 4034 (2), Secasi SLH34 (6)
  • Aerated drying ovens for the study of thermal aging (including 2 with “vacuum” option): (12)
  • Reactors for aging by oxidative hydrolysis in a thermoregulated aqueous solution: (7)
  • Dynamic fatigue tester + DMA: Instron 10KN-Electropuls E10000 (1)

Chemical analyzes and characteristics

our means of analysis

Understanding the phenomena of aging and adjusting the Durability of Materials requires mastery of sophisticated analysis and characterization techniques.

some examples

FT-IR spectroscopy
UV-visible spectroscopy
Microscopy
Chromatography
DSC and ATG
Pull / Break Machine
Permeabilities
X fluorescence
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  • Spectrophotometries FTIR absorption spectrophotometry: transmission, Photo-Acoustic Detection (PAS), μIRTF, ATR (Germanium and Diamond), Imaging mode Spectrophotometry Raman-TF and Micro Raman-TF UV-Visible Absorption Spectrophotometry, Micro-spectrofluorimetry, Colorimetry and Spectrocolorimetry, Spectrophotometry, Gloss
  • Microscopy Optical Microscopy, Binocular microscope
  • Chromatography Gel Permeation Chromatography (GPC), Gas Phase, GC, GC / MS / FID Coupling
  • Thermal Analysis Differential calorimeter DSC, Thermogravimetry ATG, Muffle furnace
  • Mechanical properties Traction, Abrasimeter, Dart-test, Charpy pendulum sheep, Shore A and D durometer
  • Permeability Permeability to O2, simultaneous permeability to carbon dioxide, oxygen and nitrogen, Permeability to water vapor
  • Means of characterization Melt index Rotary gradient viscometer, Karl Fischer
  • Preparation Microtome, Cryogenic Microtome, Brabender Mixer, Heated Shelf Press
  • New acquisition of an energy dispersive X-ray fluorescence device.
  • Various equipment on the Cézeaux University Campus (UCA – Sigma) RPE, High Field NMR, Liquid Phase Emission Spectroscopy, HPLC, MEB

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Summer break

The CNEP will be in very reduced activity from August 10 to 15, 2020, contact us preferably after this period.
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La certification ISO 9001 - 2015

L'ISO 9001:2015 spécifie les exigences relatives au système de management de la qualité lorsqu'un organisme:

a) doit démontrer son aptitude à fournir constamment des produits et des services conformes aux exigences des clients et aux exigences légales et réglementaires applicables, et

b) vise à accroître la satisfaction de ses clients par l'application efficace du système, y compris les processus pour l'amélioration du système et l'assurance de la conformité aux exigences des clients et aux exigences légales et réglementaires applicables.

Toutes les exigences de l'ISO 9001:2015 sont génériques et prévues pour s'appliquer à tout organisme, quels que soient son type ou sa taille, ou les produits et services qu'il fournit.

Obtenir la certification ISO 9001:2015, c’est s’appuyer sur 8 principes de management :
• l’orientation client ;
• l’implication du personnel ;
• l’approche processus ;
• l’amélioration continue ;
• la gestion par approche système ;
• le leadership ;
• la prise de décision fondée sur des preuves ;
• le management des relations avec les parties intéressées.