PA-BASF Ultramid B3S
PA-BASF Ultramid B3S es una resina de poliamida 6 (PA6) sin refuerzo, de fácil fluidez y finamente cristalina, diseñada por BASF para el moldeo por inyección rápido y de alta velocidad de piezas técnicas de paredes delgadas. Con una densidad de 1,13 g/cm³ y una tasa de volumen de fusión excepcionalmente alta de 145 cm³/10 min (a 275 °C/5 kg), este grado de nailon de solidificación rápida es el estándar de la industria para carcasas ligeras, abrazaderas y racores que requieren una rigidez mecánica equilibrada. Jucheng Precision, que opera bajo estrictos marcos IATF 16949 e ISO 9001, se especializa en el moldeo de Ultramid B3S. Aprovechando nuestros moldes de acero inoxidable S136 mecanizados por CNC de 5 ejes propios, controlamos la alta fluidez del PA6 y su tasa de contracción de 1,1% a 1,6% para asegurar piezas estructurales sin rebabas verificadas mediante CMM Zeiss.
BASF Ultramid B3S Finely Crystalline & Flow Profile
Ultramid® B3S is an easy-flowing, finely crystalline PA6 injection molding grade developed by BASF, designed to optimize cycle times for thin-walled technical components under dry-as-molded (DAM) conditions:
| Physical & Flow Parameter | Ultramid B3S Typical Metric (DAM) | High-Speed Molding Advantage |
|---|---|---|
| Exceptional Melt Flow | MVR 145 cm³/10min (275°C x 5kg) | Enables smooth, low-pressure cavity filling of complex thin-walled electronics and micro-fittings without short-shot defects. |
| Rapid Solidification | Finely Crystalline Nucleation Matrix | Ensures extremely rapid cooling and solidification of the melt, drastically reducing mold-open cycles and maximizing throughput. |
| Thermal Processing | Melting Temperature 220°C | Requires significantly lower melt heating energy than PA66 (262°C), reducing machine wear, thermal degradation, and energy costs. |
Process & Cycling Adaptability for High-Speed Ultramid B3S
With its micro-crystalline nucleation and highly fluid matrix, Ultramid B3S excels in high-speed, automated production lines:
| Tecnología de Moldeo | Compatibilidad de Proceso y Detalles Operativos |
|---|---|
| Thin-Walled Technical Parts | Excellent. Fully optimized for high-transparency microelectronic housings, smart-meter accessories, and intricate connector frames. |
| Fast-Cycling Clamps & Fixtures | Excellent. Ideal for heavy-duty plastic structural clamps, automotive fixing clips, electrical wire anchors, and cable ties. |
| Precision Multi-Cavity Tooling | Excellent. Exceptional melt flow index (MFR) supports rapid, multi-cavity injection runs with highly uniform weight replication. |
PA-BASF Ultramid B3S Tooling & Flash-Free Ejection Guide
Molding an unreinforced, highly fluid crystalline resin like Ultramid B3S requires precise parting line fitment to prevent flashing and thorough pre-drying to protect mechanical toughness:
- Micron-Level Flash Control (Tooling Precision): Because Ultramid B3S exhibits exceptional fluidity (MVR 145), the molten resin can seep easily into minor mold gaps, causing unsightly parting line flash. Jucheng’s tooling division uses 5-axis CNC machines to achieve micro-tolerances, keeping mold parting clearances strictly within 0.005mm on premium S136 stainless steel mold cavity blocks.
- Desiccant Pre-Drying: Polyamide 6 absorbs atmospheric moisture. If molded wet, the polymer chains hydrolyze, destroying mechanical toughness and causing surface splay. We dry raw resin in desiccant hopper dryers at 80°C (176°F) for 2–4 hours to keep moisture strictly below 0.10%.
- Control de Temperatura del Fundido y del Molde: Processing barrel temperatures are maintained between 250°C and 270°C (482°F to 518°F). Mold temperatures are kept at 40°C to 80°C (104°F to 176°F) using pressurized water heaters to maximize mechanical toughness and gloss.
- Predictable Shrinkage: Due to its finely crystalline nucleation, Ultramid B3S exhibits highly predictable shrinkage (1.10% to 1.60%). Our tooling engineers compensate for this shrinkage during our free DFM stage to secure high dimensional stability on automated runs.
Key Application Fields for PA-BASF Ultramid B3S
- Automotive Interiors & Components (IATF 16949): Dynamic fixing clamps, seat trim accessories, door handle brackets, wire harness clips, and fuel tank system brackets.
- Ingeniería eléctrica y de redes inteligentes: Multi-pin electrical connectors, high-density terminal blocks, smart-grid meter housings, dynamic switch gears, and coil bobbins.
- Consumer Goods & Fittings: Heavy-duty industrial cable anchors, luggage fittings, dynamic power tool accessories, appliance housings, and household clamps.
Propiedades
| Densidad | 1.13 g/cm³ |
| Índice de fluidez de volumen (MVR) (275°C/5.0kg) | 145 cm³/10min |
| Módulo de Tracción (DAM) | 3,100 MPa |
| Esfuerzo de tracción en fluencia (DAM) | 79 MPa |
| Deformación nominal por tracción en rotura (DAM) | 15 - 30 % |
| Resistencia a la flexión (DAM) | 110 MPa |
| Módulo de flexión (DAM) | 2,740 MPa |
| Resistencia al impacto con muesca Izod (23°C, DAM) | 53 J/m |
| Temperatura de fusión | 220 °C |
| Punto de reblandecimiento Vicat | 200 °C |
| Temperatura de Deflexión por Calor (HDT @ 0.45 MPa) | 180 °C |
| Temperatura de deflexión bajo carga (HDT @ 1.80 MPa) | 76 °C |
| Contracción de moldeo lineal | 1.10 - 1.60 % |
| Tamaño Máximo de Pieza | 800 x 600 mm |
| Tamaño Mínimo de Pieza | 1 x 1 mm |