Texin® 245
TPU(热塑性聚氨酯)
科思创 (原拜耳)(Covestro)
产品描述
Texin 245 resin is an aromatic polyester-based thermoplastic polyurethane with a Shore hardness of approximately 43D. It can be processed by injection molding; extrusion processes are not recommended.
Texin 245 resin is characterized by excellent low-temperature properties and excellent fuel and oil resistance. It also offers outstanding abrasion resistance, impact strength, toughness, and flexibility. Texin 245 natural color resin complies with FDA food-contact regulations 21 CFR 177.1680 (Polyurethane Resins) and 177.2600 (Rubber Articles Intended for Repeated Use), subject to the limitations of these and any other applicable regulations. Typical applications include casters, couplings, sleeves and gears. As with any product, use of Texin 245 resin in a given application must be tested (including field testing, etc.) in advance by the user to determine suitability.
基本信息
| 原厂资料 | 物性表(英文) | |||
| 产品特性 | 高冲击耐低温冲击高韧性耐磨食品接触级耐燃油耐油 | |||
| 成型方式 | 注塑挤出 | |||
技术参数
| 物理性能 | 值/单位 | 测试标准 | 测试条件 |
|---|---|---|---|
比重 | 1.21 - | ASTM D792 | |
收缩率 | |||
纵向(Flow) | 0.8 % | ASTM D 955 | 2.54 mm |
横向(Across Flow) | 0.8 % | ASTM D 955 | 2.54 mm |
磨耗 | 70 mg/1000cy | ASTM D 3489 | H-18, 1,000-g Load |
| 机械性能 | 值/单位 | 测试标准 | 测试条件 |
拉伸强度 | |||
50%延伸率时 | 7.6 Mpa | ASTM D 412 | |
100%延伸率时 | 9 Mpa | ASTM D 412 | |
300%延伸率时 | 20.7 Mpa | ASTM D 412 | |
- | 54.5 Mpa | ASTM D 412 | |
拉伸延伸率 | |||
断裂(brk) | 500 % | ASTM D 412 | |
弯曲模量 | 51.7 Mpa | ASTM D790 | 158°F (70°C) |
弯曲模量 | 68.9 Mpa | ASTM D790 | 73°F (23°C) |
撕裂强度 | 122.6 kN/m | ASTM D 624 | Die C |
压缩永久形变 | 43 % | ASTM D 395 | 22 Hours at 158°F (70°C) |
压缩永久形变 | 60 % | ASTM D 395 | 22 Hours at 212°F (100°C) |
压缩永久形变 | 18 % | ASTM D 395 | 22 Hours at 73°F (23°C) |
抗压强度 | 3.9 Mpa | ASTM D 575 | 10% Deflection |
抗压强度 | 5.5 Mpa | ASTM D 575 | 15% Deflection |
抗压强度 | 0.7 Mpa | ASTM D 575 | 2% Deflection |
抗压强度 | 6.9 Mpa | ASTM D 575 | 20% Deflection |
抗压强度 | 9 Mpa | ASTM D 575 | 25% Deflection |
抗压强度 | 2.1 Mpa | ASTM D 575 | 5% Deflection |
抗压强度 | 23.4 Mpa | ASTM D 575 | 50% Deflection |
回弹性 | 45 % | ASTM D 2632 | Bayshore Resilience |
| 冲击性能 | 值/单位 | 测试标准 | 测试条件 |
悬臂梁缺口(Izod Notched) | |||
-30℃ (-22℉) | 176 J/m | ASTM D256 | |
23℃ (73℉) | NB J/m | ASTM D256 | |
脆化温度 | -68 °C | ASTM D 746 | |
| 硬度性能 | 值/单位 | 测试标准 | 测试条件 |
邵氏硬度 D | 43 D | ASTM D 2240 | |
| 热学性能 | 值/单位 | 测试标准 | 测试条件 |
维卡软化温度(Vicat) | 148 °C | ASTM D1525 | Rate A |
相对温度指数(RTI) | |||
冲击w/impact,1.5/1.6 mm | 50 °C | UL 746B | |
电气Elec,1.5/1.6 mm | 50 °C | UL 746B | |
强度w/o impact,1.5/1.6 mm | 50 °C | UL 746B | |
玻璃化温度(Tg) | -46 °C | Internal | |
| 燃烧性能 | 值/单位 | 测试标准 | 测试条件 |
UL 防火等级 | |||
HB | 1.5 mm | UL94 |