| Overview: DLGF 9631.01 Z is based on polypropylene homopolymer and reinforced with 60% by weight of long glass fiber. (PP-LGF 60, Long Glassfiber Granulate). DLGF 9631.01 Z is produced by pultrusion/meltipregnation process, therby ensuring through impregnation of all the filaments in the glassfiber-roving and also providing improve ‘pellet robustness’ for air conveying. It is available in ‘standard black’ color (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 have 30% by weight of glassfiber. The ‘long’ glass fiber (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 of 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 >100 h @ 150°C. When diluted to 40% GF-content, the heat aging performance of compsites 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 moded parts as well as the choice of dilution resin and therefore, it is recommended to conduct own tests.Information provided by Styron |
