Fischer Elektronik GmbH & Co. KG Postfach 1590 Nottebohmstr. 28 D-58511 Ldenscheid Tel. 02351/435-0 www.fischerelektronik.de info fischerelektronik.de Thermally Conductive Adhesive WLK Epoxy based 2 component adhesive. The main characteristics are its good heat conductivity, high dielectric strength, and an expansion coefficient suited to copper and aluminium. The thermally conductive adhesive binds porous and non-porous surfaces such as metal, glass, ceramic and almost all plastics. Technical data : -6 Expansion coefficient 8,510 /C 16 Volume resistivity 10 Ohm/cm -3 Dielectric strength 400 V/10 inch Water absorption (in 7 days) < 0,1 % Spec. Gravity Resin 2,3 g/cm3 Spec. Gravity Hardener 1,003 Spec. Gravity Compound cured 2,1 Hardness 75 SHORE D at 25 C Viscosity Resin 0,9 Mio . 1,3 Mio cps Viscosity Hardener 1 . 3 cps Viscosity Compound 250.000 . 300.000 cps (25C) Thermal conductivity 0,836 W/m K Temperature range -56 C ... +150 C Below mentioned data are characteristical data for fully cured epoxy Bond Shear strength ( 1 inch overlapping ) at ca. 25 C 2900 psi at ca. 51 C 2200 psi at ca. 93 C 1400 psi After 30 days stored under water unchanged Bending strength 15000 psi 6 Expansion coefficient 15x10 per F - 2 - - 2 - Application : Mixing ratio of resin to hardener of 10:1 by weight. Stir both components thoroughly for approx. 5 min. The surfaces to be bound are have to be free from oxides, dust and grease. To remove surface contaminations as dust, grease, oil, etc., solvents (Aceton, thinners, Tri etc.) should be used. Do not use denaturated alcohol or glass-cleaners. Roughened surfaces increase the binding strength. Apply glue onto both sides of parts you want to adhere, thereafter join both the parts The processing time is approx. 45 minutes (potlife). Note: Be sure to read and follow the manufacturers precautions and directions when using solvent, primers and other chemicals. Curing time : at 190C approx. 20 minutes at 100C approx. 30 minutes at 40C approx. 6 hours at 20C approx. 24 hours Long term stability if handled, processed and cured properly in accordance with the specifications: min 20 years Storage and shelf life : Storage in closed containers between +4C and +51C. The influence of frost is to be avoided. The shelf life for unopened glass containers is min. 2 year, for unopened plastic containers is min.1 year The thermal resistance of the adhesive film can be calculated by using the following formula: R : Thermal resistance in C/W W p : specific R = 120C.cm/W W R = p x t / A t : film thickness in cm W 2 A : surface area of film in cm All statements, technical information and recommendations herein has been thoroughly prepared and checked, but the accuracy or completeness thereof is not guaranteed. User is responsible for determining whether this product is fit for a particular purpose and suitable for users method of application. Please remember that many factors can effect the use and performance of this product in a particular application. We reserve the right to correct any errors and faults, especially to technical modification as a result of constant product development and improvement. ISSUE 07/2007 Copyright Fischer Elektronik 2004,2005,2006,2007