|
New high temperature resistant Arnitel TPE from DSM replaces plastics-rubber and metal-rubber combinations in hot air ducts
6/23/2016 |
|
|
Royal DSM, a global science-based company active in health, nutrition and materials, has developed a new high temperature resistant grade of its Arnitel® thermoplastic copolyester elastomer (TPC) for production of flexible hot charge air ducts used in turbocharged engines.
Arnitel HT will allow system suppliers to produce the ducts in a single material and using a single process step. The current standard practice is to assemble separate elements in hard thermoplastics or metal and soft thermosetting rubbers, which need to be produced in diverse operations. Switching to Arnitel HT will provide producers with a significant improvement in process efficiency, cost reductions of up to 50% and weight reduction of up to 40%.
Hot charge air ducts are common features in advanced petrol and diesel engines. They transfer hot compressed air from the turbocharger or the supercharger to the intercooler in a system that increases the efficiency of the engine by using higher operating pressures.
The ducts obviously need to withstand very high temperatures for long periods; furthermore, in order to handle movements of the engine relative to the cooler (which is fixed on the chassis of the car) and because they need to be easy to install, flexibility is an important requirement. These needs are normally met by using ducts with a central section in a rigid high temperature thermoplastic such as DSM's Stanyl® or Akulon® polyamide, and end sections in a thermosetting polyacrylate, ethylene acrylic or fluoro rubber with a woven reinforcement.
There are several disadvantages associated with this approach, the two most important of which are weight and cost. Assemblies based on these thermoset rubbers are heavy, because their relatively low mechanical performance dictates the need for thick walls to be able to handle the demands of the hot charge air duct.
In addition, total system costs of rubber-plastics (or metal)-rubber solutions can be quite high, for various reasons. The production process is a multi-step one: molding of the various elements, followed by assembly; this adds costs and takes extra time, and it also introduces extra opportunities for defects to be introduced, both during production and in use. Because rubber processing and plastics processing require different skills, companies producing the ducts may even buy some sections rather than make them themselves. In addition, to reduce the risk of failure due to creep at the joints in these assemblies, reinforcement rings are placed inside the tubes, another assembly step.
Also not to be overlooked is the environmental disadvantage. Rubber is not easy to recycle, while energy consumption during processing as well as the working environment for operators leave a lot to be desired in terms of sustainability.
Arnitel HT eliminates all these disadvantages. With its ability to withstand continuous operating temperatures of up to 180C and peaks of up to 190C, it has high temperature resistance unequalled among thermoplastic elastomers. Arnitel HT also has good resistance to the sorts of oils and chemicals found in automobile engine environments.
Critically, Arnitel HT's combination of elasticity with high mechanical strength means that it can be used to produce the entire duct in a single piece, using 3D suction blow molding. Wall thicknesses can be approximately halved.
"Ducts produced in Arnitel HT can withstand the internal operating pressures which are demanded by car producers, not only for models in production today but also for upcoming generations," says Kurt Maschke, Global Segment Manager Air/Fuel at DSM. "And by using a single solution based on a material with excellent mechanical performance and a relatively low density in an optimized design, it is possible to obtain weight savings of as much as 40%."
DSM has been able to build on previous successes in improving the long-term thermal stability of Arnitel. Other grades have already proven themselves in existing duct applications requiring good heat resistance.
One of the first producers of hot charge air ducts to take advantage of this new innovation is CIKAUTXO, headquartered in Spain, which has capability in production of rubber components and also in plastics blow molding and injection molding. The company worked together with DSM on the development of the first part in Arnitel HT, and exchanged valuable information for improvements in the material, processing, and part validation.
"We believe that Arnitel HT will enable us to make important cost reductions and increase consistency and reliability in our production of high performance ducts," says Dr. Gurmendi at CIKAUTXO. "Our new ability to make better optimized parts in a single step provides us with a tangible advantage in the market." |
|
|
|
|
|
主站蜘蛛池模板：
天天做天天爱夜夜爽毛片|
丰满少妇人妻无码专区|
免费特黄夫妻生活片|
av资源吧首页|
亚洲AV无码成人品爱|
韩国三级网一区二区三区|
欧洲码亚洲码的区别入口|
无码人妻丰满熟妇区毛片18|
日本精品一区二区|
午夜美女裸体福利视频|
白嫩少妇bbw撒尿视频|
国产日产亚洲系列av|
亚洲口爆|
日韩中文字幕在线六区|
亚洲美女厕所偷拍美女尿尿|
凹凸在线无码免费视频|
(乱子伦)国产精品www日本|
国产欧美亚洲精品第二区首页
|
男女性杂交内射女bbwxz|
日本高清熟妇老熟妇|
别揉我奶头~嗯~啊~的视频|
99久久99久久精品免费看蜜桃|
亚洲成人自拍|
日日噜噜夜夜久久亚洲一区二区|
麻豆国产成人AV在线播放|
狠狠干|
亚洲色欧美色|
亚洲AV无码片在线观看|
女人张开腿让男人桶爽|
国产福利2021最新在线观看|
天天做夜夜做狠狠做|
国产精品被熟女|
国产精品中文一区二区|
久久精品国产亚洲夜色av网站|
国产爆乳成AV人在线播放|
亚洲aⅴ综合av国产八av|
亚洲综合伦理|
国产九九免费|
亚洲一区二区三区品视频|
亚洲精品一二三中文字幕|
男阳茎进女阳道全过程男图片|
