Polytetrafluoroethylene is currently the most used variety in fluoroplastics, accounting for about 60% of its total demand. It has excellent performance and is trusted by users. The application of other fluoroplastics in semiconductor, medical, wire coating and other fields is also expanding.

The use of fluoroplastics can be summarized as:

1. Using its chemical resistance, the application of plastics in chemical resistance has long been not limited to the manufacture of sealing rings, gaskets, and pipe fittings. The use of stars on other parts that require corrosion resistance (such as pipes) is also increasing. With the advancement of raw materials and processing technology, the molding method of fluoroplastics has expanded the range of options: such as injection molding can greatly improve production efficiency, cutting processing technology, PTFE bonding and welding technology can be used in small batch production The development of the FEP powder coating technology makes it possible to manufacture large-scale storage tanks and equipment linings, and the processing is more flexible and convenient. Anti-corrosion and anti-pollution in the semiconductor production process have increasingly adopted fluoroplastics.

2. The friction coefficient of PTFE in the mechanical industry is small, and its static friction coefficient is lower than the dynamic friction coefficient. It can be used in low-speed and high-load fields, such as structural parts such as civil engineering, chemical engineering, and bridges, which can solve the expansion and contraction problems caused by thermal expansion and vibration. Specific applications are:

(1) Bearing sleeves of anti-pollution machinery (such as textile, paper, pharmaceutical, food machinery);

(2) Machinery (such as mixers, dyeing machines, pumps) that transport non-lubricating liquids such as alkalis and solvents;

(3) Shaft sleeves working in corrosive environments such as acid and alkali (such as electroplating bath chemical equipment);

(4) No oil lubrication (such as oxygen production equipment);

(5) Oil lubrication (such as ultra-low temperature refrigerator, liquid fuel pump);

(6) Sliding parts working in an environment where the oil lubrication effect is not good (adding a high-temperature dryer, a furnace station, and a furnace conveyor belt);

(7) Sliding parts (movable support) under low speed and high load conditions.

3. Electrical field Fluoroplastics are flame-retardant materials. The critical oxygen index is high and corrosive, and it can be used as an insulation layer for wires.

ETFElPvDF has high insulation resistance, high dielectric strength, and excellent mechanical strength. qT is used for computers and communication cables. Utilizing its weather resistance, radiation resistance and other characteristics, it can be used for small cables in oil wells and nuclear reactors. Utilizing its low relative permittivity and dielectric loss at high frequency, it can be used in communication equipment and high-frequency electrical equipment. Mixing PTFE with conductive materials such as carbon black and carbon fiber can be used as antistatic materials and heating element materials. PvDF can also be made into piezoelectric components for the radio industry and instrumentation industry.

4. Non-stickiness The non-stickiness of fluoroplastics can be used to manufacture kitchen equipment (such as non-stick pans, snack molds), exterior wall coatings for high-end buildings, foam molding molds, and copier rollers. In addition, the applications of medical soil engineering materials such as artificial blood vessels, heart valves, gas separation membranes, and waterproof and breathable composite fabrics are becoming more and more extensive.

氟塑料的用途

聚四氟乙烯是目前氟塑料中用量*大的品种，约占其总需求量的60％，它的性能优异，受用户信赖。其他氟塑料在半导体、医疗、电线被覆等领域的应用也在扩大。

氟塑料的用途可概括为：

1.利用其耐药品性撅塑料在耐药品性方面的应用早已不局限于制造密封圈、衬垫、管件，在其他需要耐腐蚀的部件(如管道)上的用星也日益增加。随着原料和加工技术的进步，氟塑料的成型方式又扩大厂选择幅度：如采用注射成型可大幅度提高生产效率，小批量生产时可采用切削加工工艺，聚四氟乙烯粘接和焊接技术的开发使制造大型贮槽和设备衬里有了可能，FEP粉末喷涂工艺使加工更加灵活、方便。半导体生产过程中防腐蚀、防污染已更多地采用氟塑料。

2．机械工业领域聚四氟乙烯的的摩擦系数小，其静摩擦系数低于动摩擦系数，可用于低速高负荷领域，如在土建、化工、桥梁等结构件中可解决热膨胀和震动引起的伸缩问题。具体应用有：

(1)防污染机械(如纺织、造纸、制药、食品机械)的轴承轴套；

(2)输送碱、溶剂等非润滑液体的机械(如搅拌机、染色机、泵)；

(3)在酸、碱等腐蚀性环境(如电镀浴槽化工设备)下工作的轴套；

(4)禁油润滑(如制氧设备)；

(5)元油润滑(如超低温冷冻机、液体燃料泵)；

(6)油润滑效果不佳的环境下(加高温干燥机、炉内台午、炉内传送带)工作的滑动部件；

(7)低速高负荷状态下的滑动部件〔可动支承)。

3．电气领域 氟塑料是难燃材料．临界氧指数高又而腐蚀，可作电线的绝缘层。

ETFElPvDF的绝缘电阻、绝缘强度都高，机械强度也优．qT用于计算机、通信机电缆。利用其耐候性、耐辐照等特性可用于油井及核反应堆小的电缆。利用其高频下相对介电常数与介电损耗均低的特点可用于通信设备、高频电了仪器，将PTFE与炭黑、碳纤维这类导电物质混合可作为防静电材料和发热元件材料。PvDF也可制成压电元件用于无线电行业及仪器仪表行业。

4．不粘性利用氟塑料的不粘性可以制造厨房设备(如不粘锅、点心模具)、上等建筑物的外墙涂层、泡沫塑料成型模具、复印机辊筒等。此外在人造血管、心脏瓣片等医学土物工程材料、气体分离膜、防水透气复合织物等方面的用途也日益广泛。