The FAQ section contains answers to frequently asked questions about the hanit® raw material and the plastics recycling products made from it.
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What is the thermal conductivity value of hanit®?
Our hanit® material consists of secondary plastics, polyolefin mixes to be exact. The ingredients of these mixes are polyethylenes (LDPE/HDPE) and polypropylene. Since the polyolefin content of our hanit® products is over 95 %, we can give you the following thermal conductivity value as reference value. It is approx. 0.23 [W/mK].
What information does the thermal conductivity value provide?
The thermal conductivity value is measured in [W/mK] (watts per meter and kelvin) and indicates the amount of heat energy that is transported through a material of a certain thickness. Thermal conductivity is a temperature-dependent material constant.
What is the density of hanit®?
The density of hanit® is 0.93 g/cm³. (Density is the weight-to-volume ratio.)
What is the meaning of the measurement unit MPa in the technical data?
The measurement unit megapascal (1 MPa = 1 million Pa = 1 N/mm²) indicates e.g. tensile stress at yield.
One pascal is the pressure a force of one newton exerts on an area of one square meter.
1,000,000 Pa = 1 MPa = 10 bar
Which substances are released when hanit® burns?
In the case of fire, some low-molecular weight portions of PE/PP, e.g. paraffins, olefins, and cyclic hydrocarbons, develop from the plastics PE and PP in addition to soot, carbon dioxide, carbon monoxide, and water.
Can hanit® products be painted?
Various tests with a two-component epoxy resin paint as well as with matt varnishes based on alkyd resin have shown that the paints adhere to the products but – due to temperature-dependent material expansion – will peel off especially on the edges in spite of prior flame impingement and priming. A longtime or lasting paint adhesion can therefore not be guaranteed.
Are hanit® products frost-proof?
hanit® products are frost-proof up to -20°C, because their properties do not change within a permanent operating temperature range from -20°C to +50°C. The hydrophobic, i.e. water-repellent characteristics of our recycled plastic products prevent frost damage.