Three Hot High-Temperature Resistant Engineering Plastics

Preface

Nowadays, this era, the development of science and technology that is called a fast, the progress of materials science to many areas have brought new changes. High-temperature engineering plastics is one of the very important piece, in the high temperature, high pressure, strong corrosion of these particularly harsh environments, their performance can be awesome! Like Polyphenylene Sulfide (PPS), polyether ether ketone (PEEK) and Polyimide (PI) is the best in this.

Three popular high-temperature resistant engineering plastics

Polyphenylene sulfide (PPS)

Let's start with polyphenylene sulfide (PPS). This is a crystalline, high-performance thermoplastic. It has excellent heat resistance, with a melting point of about 285°C and a heat distortion temperature of about 260°C. This means that it can work steadily for a long time in environments above 200°C. It is not afraid to work. This means that it can work steadily for a long time in environments above 200°C and is not afraid of high temperatures at all. And its chemical stability is also great, a lot of chemical substances, such as strong acid, strong alkali and organic solvents, it is difficult to put it how. So in the chemical plant kind of corrosive things everywhere, PPS can be useful, PPS's electrical properties are also good, even in a hot and humid environment, its insulation is still very good, can ensure the normal operation of electronic equipment.

However, PPS also has a not so good place, that is, its toughness is relatively poor, if by a particularly large impact, may be brittle broken. In order to improve this point, scientists and glass fiber or carbon fiber reinforced material composite together, in this way, its mechanical properties are greatly improved, can better cope with complex working conditions.

In practical applications, PPS can be used in many ways. In the automotive industry, some parts around the engine, such as intake manifolds, are commonly used PPS to manufacture. In the electrical and electronic field, such as connectors, coil skeletons and other important parts, will also use PPS.

Polyetheretherketone (PEEK)

Polyetheretherketone (PEEK), a semi-crystalline, high-performance specialty engineering plastic, exhibits impressive properties. Its high-temperature resistance is outstanding, with a melting point of about 343°C and a long-term service temperature of more than 250°C. This property allows PEEK to be used in high-temperature environments. This characteristic allows PEEK to maintain stable performance in high-temperature environments, whether it is in the aerospace field to face the high temperatures of the engine, or in industrial manufacturing to withstand the complexity of the thermal conditions, PEEK can be handled with ease.

The mechanical properties of PEEK are also outstanding. It is not only high strength, can withstand huge external forces and not easily deformed or damaged, and good toughness, in the impact can effectively absorb energy to avoid fracture. At the same time, excellent abrasion resistance in the long-term friction and wear environment can still maintain a good state.

In addition, PEEK's good self-lubrication is also a major highlight. This property reduces friction and wear, thereby significantly extending the service life of components. In automotive manufacturing, for example, parts made with PEEK remain efficient and stable over long periods of time, reducing the frequency of maintenance and replacement and lowering costs. In the field of medical equipment, PEEK is often used in the manufacture of artificial joints and other components, and its self-lubricating properties help to improve the mobility of the joints, while extending their service life and bringing better treatment results to patients.

PEEK is particularly popular in the medical field. Because of its biocompatibility, mechanical properties and chemical resistance, many of these medical devices, such as artificial joints and spinal fusion devices, are made of PEEK. In the aerospace field, PEEK is also very popular, can be used to manufacture aircraft engine parts, wing structure parts of these things, can make the aircraft lighter, better performance.

Polyimide (PI)

A final word on polyimide (PI). This is a class of high-temperature resistant engineering plastics with particularly good overall performance. Its high-temperature resistance is simply outstanding, and can be used for a short period of time at a high temperature of 500℃, and the long-term use temperature can also be 250 - 300℃. Its strength and rigidity are very high, can withstand a lot of pressure and tension, the structure will not break. Moreover, PI has good insulating properties and is an ideal insulating material in high temperature environments.

In the electronics industry, PI is often used to manufacture electronic components in high temperature environments, such as circuit boards and insulating films. In the aerospace industry, PI can be used to make high-temperature-resistant structural components to ensure that aircraft can fly safely even under extreme conditions.

Summary

In summary, polyphenylene sulfide (PPS), polyether ether ketone (PEEK) and polyimide (PI) are three types of high-temperature engineering plastics that each have their own strengths. They have made their mark in the automotive, electronics, medical, and aerospace fields, and continue to drive technology forward.