TPU-BASF Elastollan 1185A
Để chịu được sự tấn công của vi khuẩn khắc nghiệt, tiếp xúc thủy phân liên tục và uốn cong cực lạnh xuống -38°C mà không bị suy giảm cơ học động, Elastollan 1185A của BASF cung cấp nền TPU gốc polyether không gia cường hàng đầu. Với cấu trúc siêu đặc, độ cứng Shore A 85A và chứng nhận FDA 21 CFR 177.2600 và NSF Standard 61, loại cao cấp này mang lại độ bền xé vượt trội (65-105 kN/m) và khả năng chống mài mòn DIN đặc biệt (tổn thất 25 mm³). Jucheng Precision, dưới hệ thống chất lượng ISO 13485 và IATF 16949, chuyên ép phun Elastollan 1185A trong phòng sạch độ chính xác cao. Được hỗ trợ bởi khuôn thép không gỉ S136 gia công CNC 5 trục, chúng tôi kiểm soát độ co ngót đàn hồi phức tạp (1,0%-2,0%) để tạo ra các bộ phận y tế và xử lý chất lỏng không có ba via, được kiểm tra bằng 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:
| Physical & Elastic Parameter | BASF Elastollan 1185A Spec | Lợi thế ép phun và ứng dụng cuối |
|---|---|---|
| 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:
| 成型技术等级 | Process Compatibility & Operational Details |
|---|---|
| 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:
Micron-Level Flash Control (Tooling Precision)
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.
Mold Temperature Matrix (Cooling Control)
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.
Quy trình sấy hút ẩm (Ngăn ngừa thủy phân)
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.
High Elastic Shrinkage Compensation
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: Faucet mixing valve seals, water meter connection rings, domestic water piping gaskets, chemical-resistant hoses, and couplers.
- 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.
Properties
| Mật độ | 1.12 g/cm³ |
| Hardness (Shore A, 10s) | 85 - |
| Mô đun kéo | 20.7 MPa |
| Tensile Stress at Break (Ultimate) | 35.0 - 45.0 MPa |
| Độ giãn dài khi đứt | 530 - 640 % |
| Tear Strength (Graves, Die C) | 65 - 105 kN/m |
| DIN Abrasion Loss | 25 - 30 mm³ |
| Glass Transition Temperature (Tg) | -38.0 °C |
| Điểm hóa mềm Vicat | 85.0 - 100.0 °C |
| Hấp thụ nước (Bão hòa) | 0.8 % |
| Độ co rút khuôn tuyến tính | 1.0 - 2.0 % |
| Kích thước chi tiết tối đa | 800 x 600 mm |
| Kích thước chi tiết tối thiểu | 1 x 1 mm |