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Trefil - Fillers - Quarzwerke GmbH
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Trade Fair Report Improved Properties and Processing Fillers. The trend that was obvious during the past decade continued at this year’s K-Show. The consequences of the increased price of energy, especially oil, together with developments regarding the exchange rate of the U.S. dollar, have had a significant effect on all materials, but especially the filler industry because of the very high freight costs in relation to the value of the product. Increasing transportation costs, in particular, pr...
Kunststoffe international, 2007-09-19, Micas for Heat-Resistant Plastics
...Co. KG, Stuttgart, Germany. An impact and/or notched-impact bending test was determined according to ISO 180 (IZOD) and the tensile strength test, according to ISO 527-2/1A/50 (Table 2). The PP/PE copolymer loaded with 20 wt. % phlogopite (grade: Trefil; manufacturer: Quarzwerke GmbH, Frechen, Germany) offers greater tensile strengths and higher tensile moduli (Fig. 2) than the unfilled PP/PE copolymer. Its heat stability (HDT) is as much as 49 % greater. On all tested mica fillers, shrinkage in...
Kunststoffe international, 2010-08-19, Properties Made to Measure
...f platelet-shaped mica minerals (Fig. 4) consists of several variants, two of which are used commercially nowadays as reinforcing materials in polyamide compounds. These two are muscovite mica (trade name: Mica), and phlogopite mica (trade name: Trefil). Muscovite micas are characterized by a very light natural color, which makes them universally suitable. Phlogopite micas have a brown color, which limits their use in light-colored compounds. However, phlogopite micas lend higher rigidity to pol...
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