PC-Sabic Lexan 141R
PC-Sabic Lexan 141Rは、SABIC社によって設計された非ハロゲン系非晶性ポリカーボネート樹脂であり、クリーンで高速な離型を実現する内部離型剤を統合しています。安定したメルトフローレート10.5 g/10分、密度1.20 g/cm³を備えたこのグレードは、高透明光学ディフューザー、自動車用ヘッドランプレンズ、耐久性のある電子コネクタの世界的な標準です。Jucheng Precisionは、IATF 16949およびISO 9001フレームワークの下で、Lexan 141Rの低応力射出成形を専門としています。当社の5軸CNC加工されたコンフォーマル冷却金型を利用することで、ウェルドラインを効果的に防止し、残留熱応力を排除し、Zeiss CMM検査によって検証されたゼロ欠陥部品を保証します。.
SABIC Lexan 141R Optical and Structural Performance
LEXAN™ 141R is an amorphous, non-halogenated polycarbonate resin engineered by SABIC, featuring an integrated mold release agent for optimized, high-yield manufacturing cycles:
| 物理的および光学的特性 | Lexan 141R Standard Metric | 精密成型优势 |
|---|---|---|
| Light Transmission | 88.0% Optical Transmission (2.54 mm) | Provides glass-like transparency directly from mirror-polished core cavities. Ideal for protective covers, light guides, and display lenses. |
| 衝撃靭性 | Notched Izod Impact 800 J/m | Delivers outstanding mechanical toughness, preventing structural fracturing or cracking under dynamic physical impact. |
| 熱軟化 | Vicat Softening Temperature 141°C | Maintains rigid structural geometry under elevated thermal stress. Suited for automotive headlamps and heavy-duty industrial housings. |
Molding Process Suitability for Easy-Release Lexan 141R
With a Melt Flow Rate of 10.5 g/10 min and built-in release additives, Lexan 141R flows smoothly and releases easily from complex tools:
| Molding Application | プロセス互換性とセットアップ詳細 |
|---|---|
| Optical & Clear Molding | Excellent. Fully optimized for high-transparency protective face shields, light guides, optical diffusers, and automotive outer lenses. |
| 精密電気コネクタ | Excellent. The internal mold release agent ensures high-efficiency release of complex multi-pin connectors with high-density features. |
| Heavy-Duty Enclosure Molding | Excellent. Well-suited for heavy-duty industrial housings, protective meter covers, automotive engine brackets, and helmets. |
PC-Sabic Lexan 141R Tooling & Demolding Optimization Guide
While Lexan 141R contains an internal release agent, its high melt viscosity and amorphous nature require precise engineering parameters to prevent stresses and drag marks:
- Compensating for Amorphous Shrinkage: Polycarbonate has low, uniform shrinkage (typically 0.5% to 0.7%). Jucheng’s tooling division uses 5-axis CNC machines to mill precise mold cavities with conformal cooling loops, preventing uneven cooling and thermal warping.
- 厳格な予備乾燥： PC is highly hygroscopic. Moisture levels must be kept strictly below 0.02% to prevent hydrolytic degradation, splay, and bubbles. We dry the raw resin in desiccant hopper dryers at 120°C (248°F) for 3–4 hours prior to molding.
- 溶融温度と金型温度の制御： Processing barrel temperatures are maintained between 280°C and 320°C (536°F to 608°F). Mold temperatures are kept at 80°C to 120°C (176°F to 248°F) to ensure maximum gloss and reduce residual internal molding stresses.
- Optimizing Draft & Ejection: Because PC contracts tightly onto cores during cooling, deep-draw parts require draft angles of at least 1.5° to 2°. S136 stainless steel mold cavity blocks, mirror-polished, are used to prevent drag marks.
Key Application Fields for PC-Sabic Lexan 141R
- Automotive Lighting & Exteriors (IATF 16949): Automotive headlamp lenses, interior ambient light guides, rear light covers, sunroof frames, and side mirrors.
- 電気・スマートグリッド機器： 高電圧コネクタブロック、電力量計ハウジング、透明カバーパネル、スイッチボックス、LEDディフューザー。.
- Consumer & Safety Equipment: Safety helmets, protective goggles, face shields, clear food containers, and structural drone components.
プロパティ
| 密度 | 1.19 - 1.20 g/cm³ |
| メルトマスフローレート（MFR）（300°C/1.2kg） | 10.5 g/10 min |
| 降伏点引張強度 | 62 MPa |
| 破断引張強度 | 68 MPa |
| 引張破断伸び | 110 - 130 % |
| Flexural Strength at Yield | 96 MPa |
| 曲げ弾性率 | 2,340 MPa |
| アイゾットノッチ付き衝撃強さ（23°C） | 800 J/m |
| Light Transmission (2.54 mm) | 88 % |
| ロックウェル硬度（Rスケール） | 188 - |
| Vicat Softening Point (Rate B/50) | 141 °C |
| 熱変形温度（HDT @ 1.82 MPa） | 132 °C |
| 線形成形収縮率 | 0.50 - 0.70 % |
| 難燃性評価（1.6mm） | UL 94 HB - |
| 最大部品サイズ | 1000 x 800 mm |
| 最小部品サイズ | 1 x 1 mm |