Polyetherketoneketone (PEKK)

Nombres alternativos y comerciales
Gapekk™, Kepstan®

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Description

PEKK (polyether-ketone-ketone) resins are made from a tailored combination of two monomers (terephthaloyl and isophthaloyl moieties on the left and right, respectively). Its key features include:

Outstanding high temperature performance - continuous use temperature 250 – 260°C, short term exposure up to 300°C

Very high stiffness, tensile & compressive strength, impact resistance

Excellent combustion resistance properties - inherently flame retardant, low level of smoke generation

Low smoke toxicity

Resistant to virtually all organic and inorganic chemicals (only sensitive to very agressive reagents like fuming sulfuric and nitric acid, methylene chloride)

High dielectric strength - good insulating properties

High breakdown voltage

Tremendous barrier properties (CO2, H2S...etc.)

Outstanding control of wear-rate and COF (coefficient of friction)

Los datos sobre este material han sido proporcionados por M-Base.

A menos que se indique lo contrario, todas las medidas corresponden a condiciones de temperatura ambiente. A menos que se indique lo contrario, se utilizan las unidades del SI.
Las normas armonizadas son similares a uno o varios estándares del proveedor. Es posible que algunas normas armonizadas se ajusten al estándar original, mientras que otras pueden quedar fuera de su alcance.

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Propiedades

General

Property	Value
Densidad	1.28 - 1.31 g/cm³ Show Material materials with Densidad of 1.28 - 1.31 g/cm³

Mecánica

Property	Value	Comment
Elongación	12.0 - 80.0 % Show Material materials with Elongación of 12.0 - 80.0 %
Módulo elástico	3.5 - 4.5 GPa Show Material materials with Módulo elástico of 3.5 - 4.5 GPa
Resistencia a la tracción	100.0 - 140.0 MPa Show Material materials with Resistencia a la tracción of 100.0 - 140.0 MPa	at 4-6% strain
Resistencia al choque, ensayo Charpy entallado	4.0 - 5.0 kJ/m² Show Material materials with Resistencia al choque, ensayo Charpy entallado of 4.0 - 5.0 kJ/m²
Resistencia al choque, ensayo Charpy no entallado	60 kJ/m² Show Material materials with Resistencia al choque, ensayo Charpy no entallado of 60 kJ/m²

Aplicaciones térmicas

Property	Value
Calor específico	1000.0 - 1020.0 J/(kg·K) Show Material materials with Calor específico of 1000.0 - 1020.0 J/(kg·K)
Coeficiente de dilatación térmica	2e-05 - 3e-05 1/K Show Material materials with Coeficiente de dilatación térmica of 2e-05 - 3e-05 1/K
Conductividad térmica	0.24 W/(m·K) Show Material materials with Conductividad térmica of 0.24 W/(m·K)
Temperatura de fusión	360.0 - 395.0 °C Show Material materials with Temperatura de fusión of 360.0 - 395.0 °C
Inflamabilidad	UL 94 V0

Eléctrico

Property	Value
Constante dieléctrica	2.5 [-] Show Material materials with Constante dieléctrica of 2.5 [-]
	3.6 [-] Show Material materials with Constante dieléctrica of 3.6 [-]
Resistividad eléctrica	100000000000000 Ω·m Show Material materials with Resistividad eléctrica of 100000000000000 Ω·m

Óptico

Property	Value
Transparencia	no

Technological properties

Property

Application areas

Gears, conveyor elements, bearings, seals

Other

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Processing methods

Injection molding, extrusion, coating, thermoforming

Polyetherketoneketone (PEKK)

Description

Ashby charts

Usos

Lectura sugerida

Propiedades