Dec 21, 2001 | Article
The mineral magnetite (Fe3O4) has been an important raw material for the iron and steel industry for over 100 years. The use of magnetite as a functional filler for plastics and rubbers is...
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Nov 21, 2001 | Article
Halogenated (Cl or Br or F) compounds in combination with antimony trioxide are very well known systems providing polymers with flame retardant properties. In principle any halogenated molecule...
Oct 25, 2001 | Article
In most cases, polymers are not miscible together and when they are mixed, we observe a dispersion of the minor phase (dispersed phase) in the major one (matrix). This phenomena offer many...
Sep 14, 2001 | Article
Although nitrosamines have been discovered more than 100 years ago by Otto N. Witt, it's only in the late 1970's that some north European countries have raised their possible harmful effects. These...
Sep 7, 2001 | Article
The general behaviour of a melted polymer flowing into a die is represented in Figure 2 : Melted polymer is in Yellow and die walls (1mm gap) are in Blue. Velocity profiles of the polymer have been...
Aug 13, 2001 | Article
Colour masterbatches, or colour concentrates, find applications in many areas of plastics processing. Blow, injection and rotational moulding, extrusion, calendering, and wire and cable...
Jul 31, 2001 | Article
Good mechanical properties in long glass fibre polypropylene materials can be achieved at relatively low fibre lengths in cases of good fibre-matrix adhesion. The primary issue, explains Warden...
Jul 10, 2001 | Article
The consumption of powder stabilizers supplied in a simple powder form has fallen significantly over the past five years. This change is not surprising given the many problems associated with...
Jul 2, 2001 | Article
Brominated flame retardants continue to offer high performance and cost efficiency for plastic compounds meeting demanding applications. Pierre Georlette, worldwide technical manager for Dead Sea...
Jun 11, 2001 | Article
Polyvinyl Chloride (PVC), the second world-wide plastic material, which finds widespread use in transport, building, packaging, electrical/electronic and healthcare applications, has been under...