CFRP取代了控油閥中的機加工鋁
一家亞洲汽車制造商在可變氣門正時系統內的注塑成型油控閥中用一種獨特的碳纖維增強復合材料取代了機加工鋁，控制發動機進氣和排氣。
高性能熱塑性閥門（每輛車2-8個閥門，取決于發動機尺寸）降低了成本和重量，并改善了發動機響應時間，從而提高了發動機性能。這種聚合物名為Sumiploy?CS5530樹脂，由住友化學株式會社（東京）生產，由北美住友化學先進技術有限責任公司（此處）在北美銷售，將在第18屆塑料工程師協會汽車展覽會上展出復合材料會議和展覽（SPE?ACCE）將于9月5日至7日在底特律郊區舉行。Sumiploy樹脂是住友SumikaExcel?聚醚砜（PES）樹脂加上短切碳纖維和專有添加劑包的獨特配方，可提高耐磨性和尺寸穩定性。由此得到的高性能復合材料具有優異的耐熱性，良好的尺寸穩定性和在寬溫度范圍內的長期抗蠕變性，良好的沖擊強度，對汽油，乙醇和發動機油等芳烴的耐化學性，固有的阻燃性和高環境抗應力開裂性（ESCR）。與許多其他對模具有挑戰性的高溫熱塑性塑料不同，Sumiploy CS5530樹脂具有高流動性，可以更容易地在薄壁上模塑高精度3D幾何形狀。
對于油控閥應用，Sumiploy CS5530復合材料必須通過的關鍵工程要求包括超高尺寸精度（10.7 mm±50μm或0.5％），-40至150°C的熱穩定性，低摩擦系數，耐化學性發動機油，優異的疲勞強度和抗蠕變性。從機加工鋁到工程熱塑性復合材料的改變的驅動因素包括降低制造成本，改善發動機性能和降低重量。該部件自2015年開始生產（SOP）以來一直處于商業用途，從而建立了可靠的性能記錄。作為熱塑性塑料，它在車輛壽命結束時完全可回收（可熔融再加工）。
除汽車外，Sumiploy樹脂還非常適用于電氣/電子和航空航天部件，以替代機加工鋼或鋁以及其他高性能熱塑性塑料，如聚醚醚酮（PEEK），聚芳醚酮（PAEK）和聚醚酰亞胺（PEI） 。雖然對于這種應用并不重要，但Sumiploy樹脂在低潤滑環境下減少了對配合表面的摩擦，并且由于高精度注塑成型的零件整合，增強了功能性并降低了制造成本。在石油控制閥活塞，電磁閥活塞，加熱/通風/空調（HVAC）葉片和活塞，工業齒輪以及非潤滑襯套和軸承等應用中，Sumiploy樹脂是金屬替代品的理想選擇。
Sumitomo Chemical Advanced Technologies LLC，前身為Sumika Electronic Materials，是Sumitomo Chemical Co.，Ltd。的全資子公司，是聚醚砜（PES），液晶聚合物（LCP）和高性能合金樹脂的制造商。
原文如下：
原文如下：
An Asian automaker has replaced machined aluminum with a unique carbon fiber-reinforced composite in an injection molded oil control valve within the variable valve timing system that controls engine intake and exhaust.
CFRP replaces machined aluminum in oil control valve
The high-performance thermoplastic valve (2-8 valves per vehicle depending on engine size) reduces cost and weight and improves engine response time, hence engine performance. Called Sumiploy? CS5530 resin, the polymer is produced by Sumitomo Chemical Co., Ltd. (Tokyo) and sold in North America by Sumitomo Chemical Advanced Technologies LLC (here), which will exhibit at the 18th-annual Society of Plastics Engineers’ Automotive Composites Conference & Exhibition (SPE? ACCE) from September 5-7 in the Detroit suburbs.
Sumiploy resin is a unique formulation of Sumitomo’s SumikaExcel? polyethersulfone (PES) resin plus chopped carbon fiber and a proprietary additive package that boosts wear resistance and dimensional stability. The resulting high-performance composite offers excellent thermal resistance, good dimensional stability and long-term creep resistance over a broad temperature range, good impact strength, chemical resistance to aromatic hydrocarbons like gasoline, ethanol, and engine oil, inherent flame retardance, and high environmental stress-crack resistance (ESCR). Unlike many other high-temperature thermoplastics that are challenging to mold, Sumiploy CS5530 resin is high-flow, making it easier to mold high-precision 3D geometries in thin walls.
For the oil control valve application, key engineering requirements that Sumiploy CS5530 composite had to pass include ultra-high dimensional accuracy (10.7 mm ± 50 ?m or 0.5%), thermal stability from -40 to 150o C, low coefficient of friction, chemical resistance to engine oils, and excellent fatigue strength and creep resistance. Drivers for making the change from machined aluminum to an engineering thermoplastic composite include lowering manufacturing costs, improving engine performance, and lowering weight. The part has been in commercial use since start-of-production (SOP) in 2015, thus establishing a proven record of performance. Being a thermoplastic, it is fully recyclable (melt reprocessable) at the end of vehicle life.
In addition to automotive use, Sumiploy resins are well suited for use in electrical/electronics and aerospace components to replac machined steel or aluminum as well as other high-performance thermoplastics like polyetheretherketone (PEEK), polyaryletherketone (PAEK), and polyetherimide (PEI). While not critical for this application, Sumiploy resins offer reduced friction against mating surfaces in minimally lubricated environments as well as enhanced functionality and lower manufacturing costs thanks to the parts consolidation from high-precision injection molding. Sumiploy resins are good candidates for metal replacement in applications like oil-control valve pistons, solenoid valve pistons, heating/ventilation/air conditioning (HVAC) vanes and pistons, industrial gears, and non-lubricated bushings and bearings.
Sumitomo Chemical Advanced Technologies LLC, formerly called Sumika Electronic Materials and a wholly owned subsidiary of Sumitomo Chemical Co., Ltd., is a manufacturer of polyethersulfone (PES), liquid crystal polymer (LCP), and high-performance alloy resins.
