TPU-BASF Elastollan 1185A
Para resistir ataques microbianos rigurosos, exposición hidrolítica constante y flexión extrema a temperaturas bajo cero hasta -38°C sin degradación mecánica dinámica, el Elastollan 1185A de BASF proporciona una matriz de poliuretano termoplástico (TPU) de primera calidad, sin refuerzo y a base de poliéter. Con una estructura ultra densa de dureza Shore A 85A y certificaciones FDA 21 CFR 177.2600 y NSF Standard 61, este grado de alto rendimiento ofrece una resistencia al desgarro sobresaliente (65-105 kN/m) y una excepcional resistencia a la abrasión DIN (pérdida de 25 mm³). Jucheng Precision, bajo los sistemas de calidad ISO 13485 e IATF 16949, se especializa en moldeo en sala limpia de alta precisión de Elastollan 1185A. Respaldados por nuestros moldes de acero inoxidable S136 mecanizados con CNC de 5 ejes, controlamos su compleja contracción elástica (1.0%-2.0%) para entregar componentes médicos y de manejo de fluidos sin rebabas, verificados por CMM Zeiss.
BASF Elastollan 1185A Polyether TPU Mechanical & Purity Profile
Elastollan® 1185A is an unreinforced, polyether-based thermoplastic polyurethane (TPU) engineered by BASF, formulated to provide ultimate hydrolytic stability, exceptional low-temperature flexibility, and high resistance to microbes:
| Parámetro Físico y Elástico | BASF Elastollan 1185A Spec | Ventaja de moldeo y uso final |
|---|---|---|
| Fungus & Hydrolysis Resistance | Inherent Polyether-based Backing | Resists long-term degradation from water exposure, humidity, and dynamic microbial attacks. Ideal for hot-water tubing and medical devices. |
| Tear & Abrasion Strength | Tear Strength 65-105 kN/m / DIN Loss 25 mm³ | Provides ultimate energy absorption and wear resistance, preventing tear propagation in high-speed, dynamic industrial seals. |
| Regulatory Compliance | FDA 21 CFR 177.2600 & NSF 61 Certified | Meets food and municipal water contact safety standards, ensuring zero toxic leaching in dynamic domestic plumbing. |
Biocompatible and Fluidic Process Configurations for Elastollan 1185A
With its outstanding chemical inertness and low-temperature elastic recovery, Elastollan 1185A is highly suitable for clean, dynamic seals:
| Clase de Tecnología de Moldeo | Compatibilidad de Proceso y Detalles Operativos |
|---|---|
| NSF-61 Potable Water Seals | Excellent. Fully optimized for high-volume municipal plumbing manifolds, faucet seals, water meter connectors, and chemical hoses. |
| FDA Food-Contact Plugs & Fittings | Excellent. Low chemical leaching under high humidity. Ideal for kitchen food-contact container gaskets and dispenser seals. |
| ISO 13485 Medical Dampers | Good. Biocompatible elastomer provides shock-proof isolation, ideal for medical device monitor bezels and surgical grips. |
TPU-BASF Elastollan 1185A Tooling & Process Optimization Guide
Molding an amorphous high-performance elastomer like Elastollan 1185A requires strict thermal boundaries and low-stress mold setups to prevent flashing:
Control de Rebabas a Nivel de Micras (Precisión de Herramientas)
Because Elastollan 1185A has high flow capabilities, the molten resin can seep easily into minor mold gaps, causing 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.
Matriz de temperatura del molde (control de enfriamiento)
We maintain mold temperatures at 20°C–40°C (68°F to 104°F) using pressurized water chillers. Keeping tools cold is critical to freeze the soft elastomeric phase quickly, allowing for automatic, warp-free ejection. Melt temperatures are controlled at 190°C–220°C.
Protocolo de secado con desecante (prevención de hidrólisis)
TPU is highly hygroscopic. Moisture causes hydrolytic polymer chain cleavage, making surgical parts brittle. We dry raw material in desiccant hopper dryers at 80°C–90°C (176°F to 194°F) for 2–3 hours, keeping moisture below 0.02% before molding, protecting dynamic mechanical tensile bonds.
Compensación de alta contracción elástica
Like standard TPU, Elastollan 1185A exhibits high shrinkage (typically 1.0% to 2.0% depending on hardness and grade). Our tooling division scales mold cavities precisely to compensate for this shrinkage, ensuring exact dimensional results verified by Zeiss CMM.
Key Application Fields for TPU-BASF Elastollan 1185A
- Municipal Fluids & Potable Water Systems: Sellos de válvula mezcladora de grifo, anillos de conexión de medidores de agua, juntas de tuberías de agua doméstica, mangueras resistentes a químicos y acopladores.
- Automotive Engineering & Under-the-Hood (IATF 16949): High-temperature dust bellows, steering rack protective sleeves, vibration-damping grommets, and chassis oil seals.
- Medical Diagnostics & Food Service: Biocompatible fluid connector seals, food-safe storage gaskets, medical monitor dampers, and drug-delivery syringe seals.
Propiedades
| Densidad | 1.12 g/cm³ |
| Hardness (Shore A, 10s) | 85 - |
| Módulo de tracción | 20.7 MPa |
| Esfuerzo de tracción en rotura (último) | 35.0 - 45.0 MPa |
| Alargamiento por tracción en rotura | 530 - 640 % |
| Resistencia al Desgarro (Graves, Troquel C) | 65 - 105 kN/m |
| DIN Abrasion Loss | 25 - 30 mm³ |
| Temperatura de Transición Vítrea (Tg) | -38.0 °C |
| Punto de reblandecimiento Vicat | 85.0 - 100.0 °C |
| Absorción de Agua (Saturación) | 0.8 % |
| Contracción de moldeo lineal | 1.0 - 2.0 % |
| Tamaño Máximo de Pieza | 800 x 600 mm |
| Tamaño Mínimo de Pieza | 1 x 1 mm |