{"id":2328,"date":"2026-05-21T15:26:49","date_gmt":"2026-05-21T07:26:49","guid":{"rendered":"https:\/\/www.jcinjectionmolding.com\/?p=2328"},"modified":"2026-06-30T17:42:10","modified_gmt":"2026-06-30T09:42:10","slug":"polyetherimide-pei-ultem","status":"publish","type":"material","link":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/materials\/polyetherimide-pei-ultem\/","title":{"rendered":"\u805a\u919a\u9170\u4e9e\u80fa\uff08PEI\/Ultem\uff09"},"content":{"rendered":"
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Comprehensive PEI (Ultem) Grades We Mold<\/h2>\n

We process high-strength, flame-retardant Polyetherimide resins primarily from the world-class SABIC Ultem portfolio, covering high-clarity, structural, and biocompatible requirements:<\/p>\n\n\n\n\n\n\n\n\n
PEI Material Class<\/th>\nTypical Brand & Grade<\/th>\nKey Characteristics & Advantages<\/th>\n<\/tr>\n<\/thead>\n
Unreinforced PEI<\/td>\n\u2022 SABIC Ultem 1000 \/ 1010
\n\u2022 SABIC Ultem 1000F (Food Contact)<\/td>\n		Amorphous, semi-transparent amber color. Inherent flame retardancy (UL 94 V-0) and excellent chemical\/hydrolytic resistance. Ideal for microwave components, autoclavable food service parts, and electrical connectors.<\/td>\n<\/tr>\n
Glass-Fiber Reinforced<\/td>\n\u2022 SABIC Ultem 2100 (10% GF)
\n\u2022 SABIC Ultem 2200 (20% GF)
\n\u2022 SABIC Ultem 2300 (30% GF)<\/td>\n		Reinforced with glass fibers to dramatically elevate tensile strength, flexural modulus, and dimensional stability. Heat Deflection Temperature (HDT) up to 210\u00b0C. Perfect for aerospace structural connectors and circuit boards.<\/td>\n<\/tr>\n
Aviation & Low-Smoke<\/td>\n\u2022 SABIC Ultem 9075 \/ 9085
\n\u2022 SABIC Ultem 9076<\/td>\n		Specifically formulated to comply with strict aviation FAA regulations for low smoke toxicity and low OSU heat release. Applied in commercial aircraft interior panelings, ducting, and service trays.<\/td>\n<\/tr>\n
Medical & Healthcare<\/td>\n\u2022 SABIC Ultem HU1000 \/ HU1010
\n\u2022 SABIC Ultem HU2200 (20% GF) \/ HU2300 (30% GF)<\/td>\n		USP Class VI and ISO 10993 biocompatible certified. Highly resistant to repeated steam autoclaving, ethylene oxide, and gamma sterilization. Ideal for surgical instruments, dental devices, and diagnostics manifold blocks.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Applicable Molding Processes for Polyetherimide (PEI)<\/h2>\n

PEI’s high thermal resistance and shear sensitivity require specialized molding setups and precision parameters:<\/p>\n\n\n\n\n\n\n\n
Molding Process<\/th>\nProcess Suitability & Application<\/th>\n<\/tr>\n<\/thead>\n
Standard Injection Molding<\/td>\nExcellent. Configured with specialized wear-resistant barrels to mold medical sterilizing trays, aircraft ducting, and microwave components.<\/td>\n<\/tr>\n
Thin-Wall Molding<\/td>\nGood. Highly suitable for structural electrical terminal housings and circuit board connectors with complex pathways.<\/td>\n<\/tr>\n
Insert Molding<\/td>\nExcellent. PEI’s low and stable shrinkage makes it the perfect substrate to encapsulate metal threads and brass connectors without cracking around the insert.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Polyetherimide (PEI\/Ultem) Tooling & Manufacturing Guide<\/h2>\n

PEI is amorphous but possesses extremely high melt viscosity and is highly sensitive to shear degradation. Rigorous process control is mandatory:<\/p>\n

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  • Pre-Drying:<\/strong> PEI is highly hygroscopic. Extruding wet resin will cause severe hydrolytic degradation, turning parts brittle and causing aesthetic splay. We dry raw resin in desiccant hopper dryers at 150\u00b0C (302\u00b0F) for 4 hours to keep moisture below 0.02%.<\/li>\n
  • High Melt Temperature:<\/strong> Melting requires specialized machines with high-temperature capabilities. Melting points are strictly controlled between 340\u00b0C and 400\u00b0C (644\u00b0F to 752\u00b0F).<\/li>\n
  • High Mold Temperature:<\/strong> Pressurized oil heaters are utilized to maintain mold temperatures at 140\u00b0C\u2013180\u00b0C (284\u00b0F to 356\u00b0F). Proper mold temperature is vital to minimize molded-in stress, optimize surface gloss, and prevent stress cracking.<\/li>\n
  • Gate and Runner Design:<\/strong> To prevent high shear heating and aesthetic “blush” defects, we design oversized gates and rounded runners. Tool paths are calculated precisely during our DFM stage.<\/li>\n
  • Predictable Low Shrinkage:<\/strong> As an amorphous material, PEI exhibits extremely low and uniform shrinkage (0.2% to 0.7%), supporting high-precision tolerances on multi-cavity tools.<\/li>\n<\/ul>\n<\/section>\n

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    Key Application Industries for Molded PEI Components<\/h2>\n
      \n
    • Medical & Diagnostics (ISO 13485 Certified):<\/strong> Autoclavable surgical sterilization trays, medical ventilator manifolds, pharmaceutical filtration devices, dental trial guides, and endoscopic tools.<\/li>\n
    • Aerospace & Defense:<\/strong> Environmental control system (ECS) ducting, cabin interior paneling, service trays, structural electrical connectors, and protective wire brackets.<\/li>\n
    • Electrical & Electronics:<\/strong> High-temperature burn-in test sockets, terminal blocks, printed circuit boards (PCBs), electrical switches, and heavy-duty coil bobbins.<\/li>\n
    • Automotive Engineering (IATF 16949 Certified):<\/strong> Under-the-hood sensor housings, exhaust gas recirculating (EGR) valves, headlight bezels, and cooling system fittings.<\/li>\n<\/ul>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"

      Comprehensive PEI (Ultem) Grades We Mold We process high-strength, flame-retardant Polyetherimide resins primarily from the world-class SABIC Ultem portfolio, covering high-clarity, structural, and biocompatible requirements: PEI Material Class Typical Brand & Grade Key Characteristics & Advantages Unreinforced PEI \u2022 SABIC Ultem 1000 \/ 1010 \u2022 SABIC Ultem 1000F (Food Contact) Amorphous, semi-transparent amber color. Inherent […]<\/p>\n","protected":false},"featured_media":2396,"template":"","meta":[],"material_type":[20],"application_feature":[],"machining_process":[],"class_list":["post-2328","material","type-material","status-publish","has-post-thumbnail","hentry","material_type-high-performance-polymers"],"_links":{"self":[{"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/material\/2328","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/material"}],"about":[{"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/types\/material"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/media\/2396"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/media?parent=2328"}],"wp:term":[{"taxonomy":"material_type","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/material_type?post=2328"},{"taxonomy":"application_feature","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/application_feature?post=2328"},{"taxonomy":"machining_process","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/machining_process?post=2328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}