Tefzel® HT-2185 and the other Tefzel® fluoropolymers are melt processible, modified copolymers of ethylene and tetrafluoroethylene. They are high-performance resins that can be processed at relatively high rates compared with fluorocarbon resins. They are mechanically tough and offer an excellent balance of properties. Table 1 shows typical property data for Tefzel® HT-2185.
The relatively high flow rate of Tefzel® HT-2185 makes it uniquely suitable for high-speed processing, especially for extruded coatings and injection molding of slender, thin-walled, or intricate shapes. Molded or extruded products made from Tefzel® HT-2185 are preferred for uses that do not involve significant flexural or tensile stress at elevated temperatures. Higher viscosity products such as Tefzel® HT-2181 and Tefzel® HT-2183 are preferred for these applications.
Properly processed products made from neat Tefzel® HT-2185 are inert to most solvents and chemicals, hydrolytically stable, and weather-resistant. The recommended upper service temperature is 150°C (302°F); useful properties are retained at cryogenic ranges. The level and stability of dielectric properties are excellent, and the flame rating is V-0 by the UL94 method. Mechanical properties include outstanding impact strength, cut-through, and abrasion resistance. Statements, or data, regarding behavior in a flame situation are not intended to reflect hazards presented by this or any other material when under actual fire conditions.
Applications
Tefzel® HT-2185 is ideal for many end products, including electrical components, such as sleeving, coil forms, sockets, connectors, and switches; lab ware, such as tubing, valves, containers, and fasteners; battery or instrument components that require chemical inertness; and mechanical parts.
Chemours was formed from former DuPont performance chemicals businesses, including DuPont Fluoroproducts, in 2015.
物理性能 | 额定值 (公制) | 额定值 (英制) | 测试方法 |
---|---|---|---|
比重 | 1.70 g/cc | 1.70 g/cc | ASTM D792 |
体积密度 | 1.30 g/cc | 0.0470 lb/in³ | |
吸水率 | 0.0070 % | 0.0070 % | 24 hours; ASTM D570 |
熔体流动速率 | 11 g/10 min | 11 g/10 min | ASTM D3159 |
机械性能 | 额定值 (公制) | 额定值 (英制) | 测试方法 |
---|---|---|---|
极限抗拉强度 | 40.0 MPa | 5800 psi | ASTM D638 |
伸长率 (断裂) | 300 % | 300 % | ASTM D638 |
弯曲模量 | 1.0 GPa | 150 ksi | ASTM D790 |
悬壁梁缺口冲击强度 | NB | NB | ASTM D256 |
电气性能 | 额定值 (公制) | 额定值 (英制) | 测试方法 |
---|---|---|---|
体积电阻率 | 1.00e+17 ohm-cm | 1.00e+17 ohm-cm | ASTM D257 |
介电常数 | 2.5 - 2.6 @Frequency 1e+6 Hz |
2.5 - 2.6 @Frequency 1e+6 Hz |
ASTM D1531 |
介电强度 | 70.0 kV/mm @Thickness 0.250 mm |
1780 kV/in @Thickness 0.00984 in |
ASTM D150 |
耗散因数 | 0.0054 @Frequency 1e+6 Hz |
0.0054 @Frequency 1e+6 Hz |
ASTM D1531 |
热性能 | 额定值 (公制) | 额定值 (英制) | 测试方法 |
---|---|---|---|
线性热膨胀系数 | 126 µm/m-°C @Temperature 0.000 - 100 °C |
70.0 µin/in-°F @Temperature 32.0 - 212 °F |
ASTM D696 |
熔融温度 | 255 - 280 °C | 491 - 536 °F | ASTM D3418 |
*高工作温度, Air | 155 °C | 311 °F | |
可燃性(UL94) | V-0 | V-0 | |
极限氧指数 | 30 - 32 % | 30 - 32 % | ASTM D2863 |
材料描述 | 测试方法 | |
---|---|---|
Chemical/Solvent Resistance | Excellent | |
Weather Resistance | Excellent | Years unaffected in Florida Exposure |
ETFE的英文为:ethylene-tetra-fluoro-ethylene,中文全称为:乙烯-四氟乙烯共聚物,俗称:F-40.
比重:1.7克/立方厘米
成型收缩率:3.1-7.7%
成型温度:300-330℃
ETFE是强韧的氟塑料,它在保持了PTFE良好的耐热、耐化学性能和电绝缘性能的同时,耐辐射和机械性能有很大程度的改善,拉伸强度可达到50MPa,接近聚四氟乙烯的2倍。
基本性能:-65°C~+150°C
薄壁材料 高阻燃性低烟 适用于水、燃料、油、酸碱环境中,说明ETFE是一种坚韧的材料,各种机械性能达到较好的平衡--抗撕拉 抗张强度高、中等硬度 抗冲击能力、伸缩寿命长。ETFE是良好的电介质材料,绝缘强度高,介电常数为2.6,电阻 ,耗散因数低,仅为0.003。其低介电常数,在频率和温度变化的情况下基本恒定。ETFE的使用温度范围较实用较广,恒定温度通常设定为-65°C到+150°C之间,在 温时仍坚硬,其脆化温度低至-100°C。另外,ETFE还通过了几项严格的抗燃测试,如IEEE 383,并获得UL 94 V-0等级。对大多数化学物质的物理属性影响小,对普通气体和水气的渗透性低。
ETFE应用:
ETFE的中文名为乙烯-四氟乙烯共聚物。ETFE膜材的厚度通常小于0.20mm,是一种透明膜材。
乙烯-四氟乙烯共聚物膜作为结晶性高聚物,熔点为256~280℃。燃烧时可自熄。其抗剪切机械强度高,耐低温冲击性能是现有氟塑料中较好的,从室温到-80℃都能够有较高的冲击强度,化学 ,电绝缘性和耐辐照性能好。ETFE薄膜的实际使用始于上世纪90年代,主要作为农业温室的覆盖材料、各种异型建筑物的篷膜材料,如运动场看台、建筑锥型顶、娱乐场、旋转餐厅篷盖、娱乐厅篷盖、停车场、展览馆和博物馆等。
厂家: | 美国杜邦 |
加工级别: | 挤出 |
特性: | 阻燃;耐高温 |
是否环保: | 是 |
颜色: | 本色 |
用途: | 专用粒料;电线电缆料 |
品牌: | 美国杜邦 |
型号: | HT-2185 |