Verfahren und Klebstoff zur Herstellung von elektrischen und mechanischen Verbindungen

摘要

The present invention relates to an electrically conductive adhesive for making electrical and mechanical connections comprising a polymer component and an electrically conductive component. According to the invention the adhesive is characterised in that the polymer component (220) is formed from a material having a thermal expansion coefficient along a selected axis in the range from about 5 to 10 parts per million per degree centigrade, the electrically conductive component comprises particles of an electrically conductive material capable of being sintered at a temperature within a predetermined range, the particles being loaded within the polymer component material in the range from about 15 to 20 percent conductive material by weight based on the total weight of the polymer component material and the conductive material, and the polymer component material having a glass transition temperature lying within the sintering temperature range of the particles of electrically conductive material. When the adhesive material is heated to the sintering range of the particles of electrically conducting material and is compressed along the selected axis, the particles of electrically conductive material fuse together to form continuous electrically conducting paths extending parallel to axis. The invention also relates to a method of making an electrical and mechanical connection between two surfaces comprising utilising an adhesive as defined above.