|
SABIC's Ultem* PEI Low moisture absorption foam offers major weight-out, performance & cost benefits vs. PMI for aerospace applications
10/28/2011 |
|
|
BERGEN OP ZOOM, The Netherlands - October 27, 2011 - SABIC's Innovative Plastics strategic business unit is presenting the low moisture absorption of Ultem* polyetherimide (PEI) foam for composite aircraft structures. Ultem resin's low-moisture absorption is critical in that it helps address two major aircraft OEM challenges: reducing weight for fuel conservation and emissions reduction, and lowering systems costs while delivering equal or better performance than traditional materials. Low moisture absorption combined with the proven flame-smoke-toxicity (FST), dielectric, acoustic and thermal performance of Ultem foam underscores the pioneering work of SABIC in engineering superior, world-renowned thermoplastic solutions for the aircraft industry.
"By replacing competitive materials such as polymethacrylimide (PMI) with Ultem foam, OEMs and tiers can meet their environmental goals and industry challenges, while lowering systems costs by streamlining processing and extending the application's useful life," said Kim Choate, global product marketing manager, Ultem, Innovative Plastics. "Investment in proactive laboratory testing is just one of the ways in which SABIC delivers ever-better solutions for the aircraft industry to improve performance and drive cost advantages across the board."
Ultem foam products, available in three densities, are manufactured as boards for use in skin-core-skin composite structures. Applications include luggage bins, galleys and lower wall panels.
Ultem Foam Outperforms PMI in Hot, Humid Conditions
Testing involved exposing Ultem foam and PMI foam boards to elevated heat (70C/158F) and humidity (85 percent relative humidity) in an environmental chamber. Test results demonstrated that the Ultem foam absorbed less than 0.5 percent moisture by weight at 1,000 hours. In contrast, PMI absorbed five to six percent moisture by weight at just 150 hours and maintained those results through 1,000 hours.
Weight gain from moisture absorption adds to the overall weight of the aircraft, adversely affecting fuel consumption and emissions. On average, an aircraft will burn about 0.03 kg (0,06 lbs) of fuel per hour for each kilogram (2.2 lbs) carried on board. Given that the total commercial fleet flies about 57 million hours per year, cutting one kilogram per flight can save roughly 1,700 tons of fuel and 5,400 tons of carbon dioxide (CO2) per year1.
In addition, moisture absorption itself can have a disruptive effect on electronics (interference) and may cause condensation on sensitive areas of the interior. The cycle of absorption and drying that occurs as the aircraft travels through different environmental conditions also has the potential to cause delamination of a composite structure and can distort the dimensions of a part. Such results can lead to more-frequent repairs and downtime.
Ultem Foam Avoids Time and Cost of Drying Boards
Another important benefit of Ultem foam's outstanding low moisture absorption occurs during processing. Often, PMI foam boards must be conditioned (dried and/or stored in a special area) before they can be machined, compression molded or thermoformed. This extra step adds time, costs and overhead to the process. Ultem foam avoids this scenario. Further, PMI may have to undergo a multi-step annealing process. In addition, Ultem foam is compatible with metals and thermoset laminate materials, potentially eliminating adhesives and other secondary operations that are common to the aircraft industry.
Ultem foam has a density of 10 to 30 times less than the traditional resin. It exhibits the outstanding FST performance of Ultem resin (it meets Ohio State University (OSU) performance levels below 50/50) and offers excellent dielectric and acoustic properties, including demonstrated noise reduction coefficients of greater than 0.3.
The product line is produced in three densities: Ultem foam XP060 is 60 kg/m3 (3.8 lb/ft3); Ultem foam XP080 is 80 kg/m3 (5 lb/ft3); and Ultem foam XP110 is 110 kg/m3 (6.9 lb/ft3).
For additional information on SABIC's Ultem foam products for aircraft interiors, please go to www.sabic-ip.com. For technical product inquiries, please contact us at www.sabic-ip.com/prtechinquiry.
|
|
|
|
|
|
主站蜘蛛池模板：
日本va欧美va国产激情|
免费中文熟妇在线影片|
狠狠色做五月深爱婷婷|
无码激情亚洲一区|
亚洲黑人国产精品久久|
亚洲成人av在线综合|
久久国产成人午夜av影院|
人妻丰满熟妇av无码区不卡|
爱看午夜福利|
亚洲精品区午夜亚洲精品区|
超碰免费在线|
亚洲视频第二区|
99re8国产在线观看免费视频|
毛片内射久久久一区|
亚洲一区二区三区含羞草|
99人妻碰碰碰久久久久禁片|
精品国产成人高清在线|
国产午夜免费高清久久影院|
免费无遮挡无码视频网站|
不卡av中文字幕手机看|
a4yy私人毛片|
自拍偷拍日韩|
一本色道综合久久欧美日韩精品|
国产精品久久三级精品|
亚洲国产精品无码久久电影|
特黄特色的大片观看免费视频|
潮喷在线播放|
国产精品成人久久电影|
中出内射颜射骚妇|
国产免费AV片在线观看|
国产偷窥熟女高潮精品视频|
尤物一区|
欧美在线成人免费国产|
怡红院亚洲|
爆乳喷奶水无码正在播放|
亚洲动漫成人一区二区|
内黄县|
日韩精品亚洲人成在线播放|
成人亚洲a片v一区二区三区动漫|
国产偷国产偷亚洲高清午夜|
伊人久久精品无码麻豆精品|
