FAQ - Frequently Asked Questions
The FAQ section contains answers to frequently asked questions about hanit® raw material and the recycled plastic products made from it. Should you have a question that is not answered here or believe that a certain topic should be dealt with in this section, feel free to use the contact form to tell us. It will help us expand, maintain and update the FAQ section.
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 a 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 long-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.