カーボンファイバー (CF)

Carbon Fiber (CF) reinforced resins—utilizing 10% to 40% carbon fibers in matrix polymers like PEEK, PA66, and PPS—represent the absolute pinnacle of metal-replacement plastics, offering an unrivaled strength-to-weight ratio, dimensional stability, and electrical conductivity (for ESD or EMI shielding). However, molding these composites introduces extreme abrasive wear on barrels, severe anisotropic shrinkage (warpage), and highly vulnerable weld lines where fibers fail to bridge. At Jucheng Precision, an ISO 9001 and IATF 16949 certified manufacturer, we resolve these issues with CPM powder metallurgy mold steels, scientific gate optimization, and pressurized high-temperature tooling. We provide a comprehensive, free DFM analysis within 24 hours to analyze fiber orientation, ensuring high-strength aerospace components verified by Zeiss CMM inspection.

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利用可能な材料

PA-BASF Ultramid A3WC8

荷重支持構造機構において、重いダイカスト亜鉛や航空宇宙グレードのアルミニウム合金を、熱的・化学的安定性を損なうことなく代替するために、BASFのUltramid A3WC8は、40重量%の短炭素繊維強化、熱安定化ポリアミド66(PA66-CF40)マトリックスを活用しています。密度1.28 g/cm³、融点262°Cを誇るこの高性能複合材料は、優れた引張弾性率23,500 MPaを提供し、同時に静電気放散(ESD)特性を備えています。IATF 16949およびISO 9001認証フレームワークの下で運営されるJucheng Precisionは、Ultramid A3WC8の成形を専門としています。5軸CNC加工されたS136ステンレス鋼金型に支えられ、異方性収縮率(0.1%~0.4%)を制御し、Zeiss CMMで検証された平坦で構造的に完璧な部品を提供します。.

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PA-DuPont Zytel 70C30HS

高負荷の動的機構において、重量を増やさずに構造用アルミニウムおよび亜鉛鋳物を代替するために、Celanese(旧DuPont)のZytel 70C30HSは、先進的な30%炭素繊維強化、熱安定化ポリアミド66(PA66-CF30)マトリックスを提供します。低密度1.28 g/cm³、融点262°Cを特徴とし、この高性能グレードは、優れた引張弾性率20,000 MPaに加えて、固有の静電放電(ESD)特性とほぼゼロの摩耗を提供します。IATF 16949およびISO 9001認証フレームワークの下で運営されるJucheng Precisionは、Zytel 70C30HSの成形を専門としています。5軸CNC加工されたCPM工具キャビティと加圧金型温度コントローラーに支えられ、異方性収縮変数(0.1%-0.4%)を制御して、Zeiss CMMで検証された平坦で構造的に完璧なコンポーネントを提供します。.

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PEI-SABIC LNP Thermocomp EC006

SABIC LNP THERMOCOMP EC006 is a PEI compound containing 30% carbon fiber with electrically conductive characteristics. The properties below reference SABIC Asia-region data with their test methods. Mechanical, electrical, dimensional and manufacturing requirements are reviewed for the actual component.

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PPS-Solvay Ryton CF30

過酷な産業環境や航空宇宙環境において、重量を増やすことなく、極限の動的耐摩耗性、機械的剛性、化学的不活性を維持するには、最高級の構造用複合材料が必要です。SyensqoのRyton CF30(旧Solvay)は、30%炭素繊維強化ポリフェニレンスルフィド(PPS)マトリックスによりそれを実現します。最適化された密度1.45 g/cm³と熱変形温度(HDT)265°Cを特徴とし、この高性能グレードは、固有の静電散逸(ESD)とともに、21,000 MPaという巨大な引張弾性率を提供します。Jucheng Precisionは、IATF 16949およびISO 9001フレームワークの下で、Ryton CF30の精密成形を専門としています。5軸CNC加工されたS136ステンレス鋼金型を利用し、異方性収縮変数(0.1%~0.3%)を制御して、Zeiss CMMで検証された動的摺動部品を提供します。.

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Common Carbon Fiber Reinforced Grades We Mold

We process premium-grade carbon-fiber reinforced polymers (typically 10% to 40% CF load) designed for extreme weight reduction, metal-replacement, and ESD control:

CF-Reinforced Class 代表的なブランド&グレード 主な特性と利点
PEEK-CF30
(High-Performance CF)
• Victrex PEEK 450CA30 (30% CF)
• Solvay KetaSpire KT-820 CF30
• Evonik Vestakeep 4000-CF30
Unmatched strength-to-weight ratio, continuous thermal resistance up to 260°C, and exceptional wear resistance. Perfectly replaces titanium and aluminum in aerospace brackets and oil seals.
PA66-CF30
(Engineering Nylon CF)
• BASF Ultramid A3WC30 (30% CF)
• Sabic LNP Thermocomp PA66 CF
Extremely high flexural modulus and tensile strength (exceeding 200 MPa). Lighter than glass-filled alternatives. Excellent choice for UAV/drone arms, robotic joints, and racing sports gear.
PPS-CF30
(Semi-Crystalline CF)
• Solvay Ryton CF30 (30% CF)
• Toray Torcon CF grades
Combines PPS’s complete chemical insolubility with carbon fiber’s low coefficient of thermal expansion (CLTE) and wear resistance. Suited for structural chemical valves and rotary seal wear rings.

Applicable Molding Processes for CF Resins

Because carbon fibers significantly restrict melt relaxation, advanced molding and tooling design are necessary:

成形プロセス プロセス適合性と用途
標準射出成形 Excellent. Configured with hardened PM-steel screws to mold lightweight structural brackets, heavy-duty gear sets, and aerospace connectors.
インサート成形 Excellent. Highly utilized to encapsulate precision metal bushings and mounting studs, providing high torque resistance in ultra-rigid carbon-filled parts.
精密マイクロ成形 Good. Highly optimized for small, lightweight gears in advanced robotics and radiolucent micro surgical tool connectors.

Carbon Fiber (CF) Injection Molding Technical Guide

Carbon fibers are extremely abrasive and exhibit highly directional flow orientation. Managing mold wear and part warpage is a critical engineering challenge:

  • Premium CPM Powder Metallurgy Molds: Carbon fiber acts as an aggressive grinding agent under high injection pressures. Jucheng’s tooling division uses hardened powder metallurgy tool steels (such as CPM-9V or H13 treated to 54–56 HRC) along with PVD ceramic coatings to guarantee mold longevity.
  • Mitigating Anisotropic Warpage: Carbon fiber exhibits nearly zero shrinkage along the flow path but significant shrinkage perpendicular to it. Our engineers conduct detailed Moldflow simulations during our free 24-hour DFM phase to optimize gate layouts and prevent structural warping.
  • Weld Line Structural Recovery: Carbon fibers cannot easily cross knit/weld lines, making these joints a vulnerable structural point. We strategically place gates to shift weld lines to low-stress areas or utilize sequential valve gating.
  • Melt High Temperature Profile: Melt and mold temperatures are kept higher (especially for PEEK-CF, requiring pressurized oil-heaters up to 180°C/356°F) to lower viscosity, optimize fiber distribution, and prevent cosmetic surface roughness.

Key Application Industries for Molded CF Components

  • 航空宇宙&防衛: Lightweight structural engine brackets, satellite antenna mounts, UAV/drone frames, optical camera brackets, and aircraft interior fittings.
  • Robotics & High-End Industrial: Robotic arm articulation joints, pneumatic grippers, lightweight structural slides, semiconductor wafer handling grippers, and wear-resistant gears.
  • Motorsports & Automotive (IATF 16949 Certified): Lightweight engine valves, racing car suspension linkages, high-wear transmission gear sets, and specialized sensor housings.
  • Medical & Radiography (ISO 13485 Compliant): Radiolucent surgical targeting guides, orthopedic instruments, implantable frames, and non-magnetic laboratory cassettes.

材料特性

Density (PA66-CF30) 1.25 - 1.29 g/cm³
Tensile Strength at Yield (PA66-CF30) 210 - 275 MPa
引張破断伸び 1.5 - 2.5 %
Flexural Modulus (PA66-CF30) 18,000 - 22,000 MPa
アイゾット衝撃強さ(ノッチ付き、23°C) 70 - 110 J/m
融点 260 - 265 °C
熱変形温度(HDT @ 1.8 MPa) 245 - 255 °C
線形成形収縮率(流動方向) 0.05 - 0.15 %
線形金型収縮率(横方向) 0.40 - 0.60 %
Surface Resistivity (Conductive Grade) 1.0E+02 - 1.0E+06 Ohm/sq
最大部品サイズ 800 x 600 mm
最小部品サイズ 0.5 x 0.5 mm