Conductive Paste Rear Windshield Heater

Conductive Paste containing Nanostructured Materials

Introduction Application Properties Advantage Of Using Nanotechnology

Conductive materials are available in a variety of forms, such as metal wires and sheets, conductive yarns, conductive dyes, conductive liquids and dough, and have a variety of applications. Conductive dough is made of a combination of heavy and non-ferrous precious metals and is widely used in various industries, especially electronics. Silver dough is one of the most common conductive materials used in the manufacture of solar and photovoltaic panels, mobile electrical circuits as well as heating circuits in land, rail, marine and air transportation. It is one of the basic requirements of automakers and automotive glass makers to print the heater circuit on the rear windshield and produce automotive safety glass. In cold weather due to condensation process there will be drop water on the car glasses which can affect driver’s vision and may cause an accident. This is more possible on the back glass of the car due to being far away from the heater. The use of nanoparticles in conductive dough reduces the electrical resistance and consequently increases the current transfer efficiency of these materials.

Heater circuit on the rear windshield in automobile

Physical properties of product
Density (g/cm3)Metallic surfaces
Weight loss in 1100.16 (w/w%)
Weight loss in 6000.67 (w/w%)
Particle size (µm)<5
Solid volume (%)55
Viscosity (Pa.s)25.3

Due to the unique surface structure of nanostructure silver powder, the electrical losses of produced elements are lower than that of conventional products.

Electrical resistance of the product is reduced to half after using nanostructure silver powder. See the following table.

 Electric Resistance (μΩ/sq)
Sample containing nanoparticles32.2
Conventional Sample68.4
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