Examples of engineering plastics in manufacturing applications

Polyamide (PA, common name: nylon) because of its unique low specific gravity, high tensile strength, wear resistance, self-lubricating, excellent impact toughness, with both rigid and flexible performance and win people's attention, coupled with its processing simplicity, high efficiency, light specific gravity (only 1/7 of the metal), can be processed into a variety of products to replace the metal, is widely used in automotive and transportation industry. Typical products are pump impellers, fan blades, valve seats, bushings, bearings, a variety of instrument panels, automotive electrical instrumentation, hot and cold air conditioning valves and other parts, about each car consumption of nylon products amounted to 3.6 ~ 4 kg. Polyamide in the automotive industry, the largest proportion of consumption, followed by electrical and electronic.

Polycarbonate

(PC) has a similar strength of non-ferrous metals, while both ductility and toughness, its impact strength is very high, with a hammer can not be destroyed, can withstand the explosion of the TV fluorescent screen. Polycarbonate transparency and excellent, and can be applied to any coloring. Because of the above excellent performance of polycarbonate, has been widely used in a variety of security lampshade, signal lamps, gymnasiums, stadiums, transparent protective panels, lighting glass, high-rise building glass, automobile mirrors, windshield panels, aircraft cockpit glass, motorcycle driving helmets. The markets with the highest usage are computers, office equipment, automobiles, replacement glass and sheets, and CD and DVD disks are one of the most promising markets.

Polyformaldehyde

Polyformaldehyde (pom) is a good performance of engineering plastics, in foreign countries have a "steel", "super steel," said. pom has a similar metal hardness, strength and steel, in a wide range of temperatures and humidity are very good self-contained. The pom has similar hardness, strength and steel, in a wide range of temperature and humidity have very good self-lubrication, good fatigue resistance, and rich in elasticity, in addition it also has good chemical resistance. pom to lower than the cost of many other engineering plastics, is replacing some of the traditionally occupied by the metal of the market, such as the replacement of zinc, brass, aluminum and steel to make a lot of parts, since the introduction of the pom has been widely used in electrical and electronic, machinery, instrumentation, daily light industry, Automobile, building materials, agriculture and other fields. In many new areas of application, such as medical technology, sports equipment, etc., pom also showed good growth trend.

Polybutylene terephthalate

(PBT) is a thermoplastic polyester, non-reinforced PBT and other thermoplastic engineering plastics compared to the processing performance and electrical properties of the better.PBT glass transition temperature is low, the mold temperature of 50 ° C can be quickly crystallized, short processing cycle. Polybutylene terephthalate (PBT) is widely used in the electronic, electrical and automotive industries. Because of the high insulation and temperature resistance of PBT can be used as a TV set back to the sweep transformer, car distributor and ignition coil, office equipment shell and base, a variety of automotive exterior parts, air conditioning fan, electronic stove base, office equipment shell parts.

Polyphenylene ether

Chemical abbreviation for PPO. 2,6-disubstituted phenol by oxidative coupling polymerization of thermoplastic resins, generally yellow powder. Commonly used by the 2,6-dimethyl phenol synthesized polyphenylene ether, has excellent overall performance, the most important feature is that in the long-term load, has excellent dimensional stability and outstanding electrical insulation, the use of a wide range of temperatures, can be

Polyphenylene ether

in the range of -127 ~ 121 ℃ for long-term use. It has excellent water and steam resistance, high tensile and impact strength, and good creep resistance. In addition, there are good wear resistance and electrical properties. Mainly used instead of stainless steel to manufacture surgical medical equipment. In the electromechanical industry can make gears, blower blades, pipes, valves, screws and other fasteners and connectors, etc., but also for the production of electronic and electrical industry parts, such as coil skeleton and printed circuit boards, etc. In 1964, the United States General Electric Company first 2,6-dimethyl phenol as raw material to achieve industrial production of polyphenylene ether. 1966, General Electric Company produced a modified polyphenylene ether (MPPO). 1984, the General Electric Company produced a modified polyphenylene ether (MPPO). (In 1984, the world consumption of polyphenylene ether was 163kt.

Wear-resistant modified engineering plastics

Wear-resistant modified engineering plastics can provide a lower coefficient of friction to reduce the wear rate. For example, the lid of a blood glucose meter can increase its life by opening and closing back and forth with the use of wear-resistant materials. Abrasion-modified engineering plastics are also used in color-matched products, even between different materials. Single-use products, such as needles and blades, also benefit from the lubricating effect of the material. In addition, other applications for wear-resistant materials include catheters, cannulas, transmission devices and vacuum tubes. Other effects include reduced noise due to the movement of smooth parts, improved plastics processing performance and extrusion molding efficiency.

Electrically conductive modified engineering plastics

When thermoplastic materials add a conductive component, it has a permanent electrostatic dissipative (ESD) and prevent static buildup function can play a protective role. Conductive thermoplastic materials allow for continuous discharge of static electricity rather than rapid buildup and discharge. Static electricity can damage sensitive electronic components and can cause explosions in flammable environments. Static buildup can clog the material's transmission and interrupt the transmission of machinery. Conductive thermoplastics can be used in a wide range of color-matched products, and some conductive materials are transparent. Applications include, among others, ECG sensors, suction tubes, electrical protection devices, and new medical delivery devices such as inhalation products, including PMDI spacers.

Radiation Resistant Modified Engineering Plastics

Specific additives can increase the density of thermoplastics. These higher-density thermoplastics have a metallic texture, but maintain the processing characteristics of plastics. The medical products industry is looking for such alternatives to lead for environmental reasons. These high specific gravity additives are also radiation resistant. Injection molded parts, catheters or sheets made of radiation-resistant compounds attract X-rays without being passed through them. Soft, fabric-like sheets used in radiation therapy or surgery can help protect machines and people from scattered and direct X-rays. Catheters containing barium sulfate can be tracked by fluoroscopy or X-ray imaging after they are implanted in the body.Instruments used by Baxter Healthcare in performing heart valve repair procedures (reusable handles and disposable snap closures) are constructed of polycarbonate specialty-modified engineering plastics.X-ray-visible (i.e., radiation-protected) stoppers are molded using an embedded injection process on a molding, and the steam-treatment-resistant stopper is made of polyethersulfone, which ensures that the entire unit can withstand high-temperature steam sterilization treatment.

Pre-Colored Modified Engineering Plastics

In recent years, plastic color matching technology has evolved rapidly. In medical applications, designers can choose from FDA-compliant and non-migrating pigments. Unique color effects can contribute to a product's unique selling point and provide benefits to medical device designers. As medical products move from the hospital to the home consumer market, lovely colors and fluorescent effects can add value to the product. In addition, the use of elastomers can add value by providing a soft touch. Medical devices with pleasant colors can also make patients more willing to cooperate with treatment while reducing their pain.