牌号 | INSPIRE™ DLGF 9631.01 Z |
厂家 | Trinseo |
分类 | PP均聚物 |
介绍 | DLGF 9631.01 Z is based on polypropylene homopolymer and reinforced with 60% by weight of long glass fibers. (PP-LGF60, Long Glassfiber Granulate). DLGF 9631.01 Z is produced by pultrusion / meltimpregnation process, thereby ensuring thorough impregnation of all the filaments in the glassfiber-rovings and also providing improved ‘pellet robustness' for air conveying. It is available in ‘standard black' colour (TR 7701862). This PP-LGF60 is a ‘concentrate' which has to be diluted - usually with ‘neat'-PP but also mineral-filled PP-based compounds can be used. The ‘dilution' is typically done as a dry-blend of granulates by means of gravimetric dosing devices at the injection-molding machine. A weight ratio of 1 : 1 of DLGF 9631.01 Z and i.e. LGF 8100 PP-copolymer will result in a composite-material-system having 30% by weight of glassfibers. The ‘long' glass fibers (initial length = 11 mm) provide high stiffness, strength and impact-resistance to the injection molded parts. DLGF 9631.01 Z has been especially formulated to meet the requirements for use in automotive ‘under-the-hood' (UTH) and ‘under-body' applications i.e. front-end carriers (FEC) aka ‘bolster', impingement shields or structural parts like i.e. battery trays or spare wheel wells. The long term heat ageing resistance (LTHA) has been increased to a high level as needed for ‘UTH' applications. Injection molded parts based on DLGF 9631.01 Z diluted with ‘neat'-PP to 30% GF-content will show no signs of degradation and surpass the limit of > 1000 h @ 150°C. When diluted to 40% GF-content, the heat aging performance of composites based on DLGF 9631.01 Z will increase beyond the 1000 h. In many cases, even a dilution to 20% will result passing beyond 1000 h @ 150°C, however this will depend on the wall-thickness of molded parts as well as the choice of dilution resin and therefore, it is recommended to conduct own tests. For large size molded parts, the PP-types chosen for dilution typically have MFI values in the range of 40 - 80 (g/10min @ 230°C) and for most applications the choice of impact-copolymers like LGF 8000 or LGF 8100 (European grades) and LGF 8600 or LGF 8500 (‘corresponding' North American grades) represents the best property balance. For smaller parts / shorter flow-paths, the dilution can also be done with PP-types having MFI in the range of 10 - 20 for increased low temperature impact performance. To meet certain application-specific requirements the polymer-type for dilution could also be homopolymer PP (LGF 7000, LGF 7600) as well as mineral-filled/compounded PP-grades. Eventually, a third component (i.e. talcum-masterbatch, DTFC AP.71) can be added to control shrinkage and warpage, thereby increasing the available options for optimization of the material-system. Note: The properties shown below have been measured on standardized ‘dogbone'-shape specimens (ISO 3167). However, the mechanical properties which will be present in ‘real' injection-molded parts may be different - depending on the glassfiber-orientation and the fiber-length distribution profile - which themselves are resulting from processing parameters and hardware configuration (such as i.e. the type of screw and mixing elements, back-pressure during dosing cycle, diameter and radii of nozzle and hot-runners, number and size of gates, speed of injection during mold filling and flow-path and flow-length within the mold). |
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