POM-ポリプラスチックス ジュラコン M90-44
高公差の運動機構において、長期の摺動摩耗耐性と高い寸法安定性の完璧なバランスを維持するには、高度にバランスの取れたアセタールコポリマーが必要ですが、ポリプラスチックスのジュラコンM90-44はそれを実現します。密度1.41 g/cm³、安定したメルトインデックス9.0 g/10分を誇るこの標準グレードは、その卓越した摩擦特性、低摩耗係数、耐クリープ性で世界的に認められています。IATF 16949およびISO 9001フレームワークの下で、Jucheng Precisionは複雑な自動車および消費者向けアセンブリ向けにジュラコンM90-44の成形を専門としています。5軸CNC加工によるS136工具キャビティと35台以上の先進的なプレス機を使用して、1.8%から2.2%の収縮率を制御し、Zeiss CMMで検証されたゼロ欠陥のギアを納品します。.
Duracon M90-44 Copolymer Mechanical & Tribological Profile
DURACON® M90-44 is the global standard acetal copolymer (POM-C) resin engineered by Polyplastics, optimized to deliver exceptional friction properties, low wear, and stable dimensional repeatability:
| Dynamic Attribute | Duracon M90-44 Rated Spec | Operational Mechanism Advantage |
|---|---|---|
| Low Friction Sliding | Dynamic Friction Coefficient 0.46 | Demonstrates exceptional self-lubricating sliding performance against carbon steel, preventing heat buildup and squeak in dry dynamic contacts. |
| Structural Toughness | Tensile Modulus 2700 MPa / Strength 62 MPa | Ensures a highly balanced combination of mechanical rigidity and elongation, resisting high-torque snap-fit shear forces. |
| Dimensional Recovery | Water Absorption 0.5% (23°C/24h) | Maintains excellent, repeatable dimensions under humid operating environments, preventing gear teeth swelling and operational jamming. |
Structural Kinematic Process Compatibility for Duracon M90-44
With its balanced melt viscosity and crystallization rate, Duracon M90-44 supports high-stiffness micro-features:
| 成形プロセス | Operational Compatibility & Details |
|---|---|
| Precision Dynamic Slides & Guides | Excellent. The primary process for Duracon M90-44. Ideal for helical gears, sliding block guides, structural cams, and silent printer rollers. |
| Self-Coloring Consumer Housings | Excellent. Highly compatible with masterbatch color additives, providing rich, vibrant surface coloration for dynamic hand tools and toys. |
| Multi-Cavity Automotive Runs | Excellent. Moderate flowability (MFR 9) supports continuous injection molding cycles with extremely tight batch-to-batch dimensional stability. |
POM-Polyplastics Duracon M90-44 Blueprint
Molding a standard copolymer resin like Duracon M90-44 requires precise mold cooling to manage isotropic shrinkage, alongside corrosion-resistant tool face designs:
S136 Hardened Steel Core
At melt temperatures, POM copolymers release minor formaldehyde outgassing. Jucheng’s tooling division uses hardened, corrosion-resistant S136 stainless steel molds and machines highly ventilated vents (0.015mm to 0.020mm) to prevent mold face corrosion and secure clean parting lines.
Crystalline Shrinkage Compensation
Duracon M90-44 exhibits high, isotropic shrinkage (typically 1.80% to 2.20%). We employ conformal cooling loops machined on our 5-axis CNCs directly into core block inserts, ensuring uniform heat dissipation across deep rib gates to prevent warpage and shrink voids.
Key Application Fields for POM-Polyplastics Duracon M90-44
- Automotive Sealing & Kinematics (IATF 16949): Window regulator slider blocks, door latch gear sets, seatbelt pretensioner slider tracks, windshield wiper pivots, and fuel level sender caps.
- Precision Mechanical Hardware: Helical gears for office printers, conveyor belt rollers, sliding track guides, chemical spray nozzles, and household water faucet valves.
- Consumer & Furniture Commodities: Snapping furniture fasteners, dynamic plastic zippers, toy vehicle gearboxes, cosmetic container caps, and heavy-duty structural clips.
プロパティ
| 密度 | 1.41 g/cm³ |
| メルトマスフローレート（MFR）（190°C/2.16kg） | 9 g/10 min |
| メルトボリュームフローレート（MVR）（190°C/2.16kg） | 8 cm³/10min |
| 降伏点引張強度 | 62 MPa |
| 破断時公称ひずみ | 35 % |
| 引張弾性率 | 2,700 MPa |
| 曲げ強度 | 87 MPa |
| 曲げ弾性率 | 2,500 MPa |
| シャルピー衝撃強さ（ノッチ付き）（23°C） | 6 kJ/m² |
| Dynamic Friction Coefficient (vs C-Steel) | 0.46 - |
| ロックウェル硬さ（Mスケール） | 80 - |
| 融点 | 165 °C |
| 熱変形温度（HDT @ 1.80 MPa） | 95 °C |
| 線形成形収縮率 | 1.80 - 2.20 % |
| 最大部品サイズ | 1000 x 800 mm |
| 最小部品サイズ（マイクロギア限界） | 0.5 x 0.5 mm |