DENKA

Product Information

TEFKA

Product Information

Outline

TEFKA is ECTFE (copolymer of ethylene and chlorotrifluoroethylene) based film with the high level of transparency and the flame retardance.

Characteristics

In addition to the general fluoride resin properties (weatherability, chemical resistance), the chloride atom within its polymer construction provide flame retardance and grilled resistance as its unique property.

Uses

  • Photovoltaic related materials
  • Membrane construction
  • Release film

Related products

Technical Information

The basic properties of TEFKA
Material Property Item Unit TEFKA
ECTFE
Other Film
ETFE
Specific Gravity 1.68 1.73
Film Thickness μm 50 50
Tesile Strength
ASTM D-256
Tensile Modulus of
Elasticity
(MD/TD)
Mpa 950/950 570/570
Breaking Strength
(MD/TD)
Mpa 70/70 60/60
Tensile Elongation
(MD/TD)
% 420/420 450/500
Heat Resistant Melting Point 242 260
Ball Presure
Temprature
180 185
Flame
Retardance(UL94)
VTM-0 VTM-0
Grilled
Retardance(FM4910)
Limiting Oxygen
Index
% 60 32
Optic Property Total Light
Transmittance
% 95 94
HAZE & 2 2
Electrical Property Volume Resistivity
(23℃/50%RH)
Ω・cm > 10^15 >10^15
Dielectric Breakdown
Voltage
(3.2mm Thickness)
kV/mm 20 16
Durability Water Vapor
Permeability
(40℃/90RH)
g/m²・day 2.39 9.32
Water
Absorption(24h)
% 0.01 0.03

Fluoride films

Contact Us

Living & Environment Products

Environmental Film Dept. (TEFKA, DX film)
TEL
+81-3-5290-5565
FAX
+81-3-5290-5777
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