一家亚洲汽车制造商在可变气门正时系统内的注塑成型油控阀中用一种独特的
碳纤维增强
复合材料取代了机加工铝，控制发动机进气和排气。
高性能热塑性阀门（每辆车2-8个阀门，取决于发动机尺寸）降低了成本和重量，并改善了发动机响应时间，从而提高了发动机性能。这种聚合物名为Sumiploy?CS5530树脂，由住友化学株式会社（东京）生产，由北美住友化学先进技术有限责任公司（此处）在北美销售，将在第18届塑料工程师协会汽车 展览会上展出复合材料会议和展览（SPE?ACCE）将于9月5日至7日在底特律郊区举行。Sumiploy树脂是住友SumikaExcel?聚醚砜（PES）树脂加上短切碳纤维和专有添加剂包的独特配方，可提高耐磨性和尺寸稳定性。由此得到的高性能复合材料具有优异的耐热性，良好的尺寸稳定性和在宽温度范围内的长期抗蠕变性，良好的冲击强度，对汽油，乙醇和发动机油等芳烃的耐化学性，固有的阻燃性和高环境抗应力开裂性（ESCR）。与许多其他对 模具有挑战性的高温热塑性塑料不同，Sumiploy CS5530树脂具有高流动性，可以更容易地在薄壁上模塑高精度3D几何形状。
对于油控阀应用，Sumiploy CS5530复合材料必须通过的关键工程要求包括超高尺寸精度（10.7 mm±50μm或0.5％），-40至150°C的热稳定性，低摩擦系数，耐化学性发动机油，优异的疲劳强度和抗蠕变性。从机加工铝到工程热塑性复合材料的改变的驱动因素包括降低制造成本，改善发动机性能和降低重量。该部件自2015年开始生产（SOP）以来一直处于商业用途，从而创建了可靠的性能记录。作为热塑性塑料，它在车辆寿命结束时完全可回收（可熔融再加工）。
除汽车外，Sumiploy树脂还非常适用于电气/电子和航空航天部件，以替代机加工钢或铝以及其他高性能热塑性塑料，如聚醚醚酮（PEEK），聚芳醚酮（PAEK）和聚醚酰亚胺（PEI） 。虽然对于这种应用并不重要，但Sumiploy树脂在最低润滑环境下减少了对配合表面的摩擦，并且由于高精度注塑成型的零件集成，增强了功能性并降低了制造成本。在石油控制阀活塞，电磁阀活塞，加热/通风/空调（HVAC）叶片和活塞，工业齿轮以及非润滑衬套和轴承等应用中，Sumiploy树脂是金属替代品的理想选择。
Sumitomo Chemical Advanced Technologies LLC，前身为Sumika Electro
nic Materials，是Sumitomo Chemical Co.，Ltd。的全资子公司，是聚醚砜（PES），液晶聚合物（LCP）和高性能合金树脂的制造商。
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.
