Chemours Tefzel® HT-2185 Fluoropolymer Resin

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.

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。