产品详情
PTFE日本大金F-201---PTFE F-201是一种用于糊料挤出的聚四氟乙烯细粉树脂。F-201设计用于意大利细面条管、薄壁管和钢丝涂层应用，小于16 AWG，以高减速比运行。
It is produced by suspension polymerization or emulsionpolymerization in industry. 1. preparation of tetrafluoroethylenemonomer:
In industry, chloroform is used as raw material and anhydroushydrofluoric acid is used to fluorinate chloroform. The reactiontemperature is 65 Above C, antimony pentachloride was used ascatalyst and tetrafluoroethylene was finally prepared by thermalcracking method. It can al
so be used to produce tetrafluoroethylene by the action of zincwith tetrafluoroethylene at high temperature[ 3]
2. preparation of polytetrafluoroethylene
In the enamel or stainless steel polymerizer,polytetrafluoroethylene was prepared by oxidation-reductionpolymerization with water as the medium, potassium persulfate asinitiator, ammonium perfluorocarboxylate as dispersant,fluorocarbon compound as stabilizer, and tetrafluoroethylene byoxidation-reduction polymerization. All kinds of auxiliaries areadded to the reactor, the tetrafluoroethylene monomer enters thepolymerization kettle in gas phase, and the temperature in thereactor is adjusted to 25 °C, and then a certain amount ofactivator (sodium bisulfite) is added to initiate polymerization byoxidation reduction system. The monomer was added continuouslyduring polymerization, and the polymerization pressure was kept at0.49-0.78mpa. The dispersion solution obtained after polymerizationwas diluted to a certain concentration with water, and thetemperature was adjusted to 15-20 C. After mechanical stirring andcoagulation, the product is fine-grained resin after being washedand dried
1. 常温常压下稳定，避免湿，热，高温
无真正熔点，450°C以上慢慢分解，直接变为气体。在327°C时，机械强度突然消失。不溶于任何溶剂。除了能与熔融的碱金属起反应外，不受任何物质的侵蚀，即使在、王水或发烟硫酸、氢氧化钠中 煮沸，也不起任何变化。.白色、无臭、无味、无毒的粉状物，俗称“塑料王”。具有优良的化学稳定性、耐腐蚀性、密封性、高润滑不粘性、电绝缘性和良好的抗老化耐力。耐高温，使用工作温度达250°C。耐低温，低温下具有良好的机械韧性，即使温度下降到-196°C，也可保持5%的伸长率。耐腐蚀，对大多数化学药品和溶剂表现出惰性，能耐强酸强碱、水和各种有机溶剂。耐候性好，有塑料中zui佳的老化寿命。高润滑，是固体材料中摩擦系数zui低者。不黏附，是固体材料中表面张力zui小者，不黏附任何物质。无毒害，具有生理惰性，作为人工血管和脏器长期植入体内无不良反