进口FEP颗粒原料,能注塑的FEP
美国杜邦FEP代理商:大田化工贸易有限公司
Teflon® FEP is a fluorinated ethylene propylene resin that meets the ASTM Standard Specification for FEP—Fluorocarbon Molding and Extrusion Materials under ASTM Designation D2116-95a. It is available as pellets or as stabilized aqueous dispersions. Applications for this family of resins include coating, melt extrusion, and impregnating. Products made from Teflon® FEP are known for their excellent chemical resistance, superior electrical properties, and high service temperatures of up to 200°C (392°F). In addition, Teflon® FEP provides outstanding low-temperature toughness and unique flame resistance.
Teflon® FEP fluoropolymer resins are processed by conventional melt-extrusion techniques and by injection, compression, transfer, and blow-molding processes.
The high melt strength and draw-down capability of these resins facilitate the use of large dies and draw-down tooling to increase production rates. Equipment in contact with molten resin should be made of corrosion-resistant metals.
Larger length-over-diameter extruder barrels are used to provide enough residence time at high production rates to melt these high-temperature polymers. Reciprocating screw injection molding machines are mended.
FEP是四氟乙烯和六氟丙烯共聚而成的。
FEP结晶熔化点为580F,密度为2.15g/CC(克/立方厘米),它是一种软性塑料,其拉伸强度、耐磨性、抗蠕变性低于许多工程塑料。它是化学惰性的,在很宽的温度和频率范围内具有较低的介电常数(2.1)。该材料不引燃,可阻止火焰的扩散。它具有优良的耐候性,摩擦系数较低,从低温到392F均可使用。该材料可制成用于挤塑和模塑的粒状产品,用作流化床和静电涂饰的粉末,也可制成水分散液。半成品有膜、板。棒和单纤维。美国市场经销的FEP有DUIPont公司的 Teflon牌、Daikin公司的Neoflo牌、Hoechst Celanese公司的IHoustaflow牌。其主要的用途是用于制作管和化学设备的内村、滚筒的面层及各种电线和电缆,如飞机挂钩线、增压电缆、报警电缆、扁形电缆和油井测井电缆。FEP膜已见用作太阳能收集器的薄涂层。