Silica fiberglass needle mat is made of silica fiberglass chopped strand and then through carding and needling process. Fiberglass randomly distributed in 3-D structure. It has properties of small small needling hole and high porosity. It widely used as filtration and high temperature insulation material in Coom , Steel, nonferrous metal and chemical industry. It also used as acoustic, insulation, damping and fire resistant material in motorcycle and automobile industry.
Soft pint nearly 260℃, long-period service at 550℃
More powerful engines, modern exhaust gas technologies and innovative materials used in the construction of passenger cars and commercial vehicles call for greater use of insulation for exhaust systems. Heat protection shields are an excellent solution and perform two different functions.
Depending on the object to be protected and the heat source in question, heat protection shields can be applied in two areas:
Directly on the component designated as the heat source
On areas that are to be protected against heat
Catalyst, diesel particle filter and silencer insulation. Protection for the inner core
Due to the high gas temperature, the inlets and outlets on the catalytic converter must be insulated. Based on experience, temperatures in this case range from 800 – 1000 °C. The same problem also applies to diesel particle filters, although temperatures are not quite as high and are approximately 100 °C lower than those of a typical catalytic converter.
High temperatures and strong pulsation levels call for the use of materials for absorptive as well as baffle silencers. In this case, also the acoustic properties of mineral-fibre products are very important.
For insulating catalytic converters, diesel particle filters and silencers, the Heat Protection Group offers 2D stamped parts and 3D tubular sleeves made of needle and stitch-bonded needle mats for various temperature ranges.