Polyimide thermoset material is called the "Warrior" of high temperature resistant materials. It can be used stably for a long time in a high temperature environment of 250℃ - 300℃, and some special varieties can even withstand extreme high temperatures of more than 500℃. In the aerospace field, for example, the aircraft in high-speed flight, the fuselage surface will be due to intense friction with the air to generate a lot of heat, ordinary materials in such high temperatures will be rapidly deformed, failure, and polyimide thermosetting materials made of parts can hold their positions to ensure the safe operation of the aircraft. The National Aeronautics and Space Administration (NASA) of the United States in the spacecraft heat insulation parts in a large number of applications of polyimide thermosetting materials, effectively resisting the re-entry of the atmosphere when the high temperature of the baking.
High strength and high modulus
In addition to high temperature resistance, polyimide thermosets have excellent mechanical properties. It is characterised by high strength and high modulus, with a tensile strength of 100 - 300 MPa and a modulus of 3 - 10 GPa. This high strength makes it less susceptible to deformation and fracture when subjected to large external forces, and it is widely used in structural components that are subjected to high loads. In automotive manufacturing, the use of polyimide thermoset materials made of engine parts, not only can withstand high temperatures and high pressure working environment, but also by virtue of its high strength to reduce the weight of parts, thereby reducing the overall energy consumption of the car.
Good chemical stability
Polyimide thermoset materials are also excellent in chemical stability. It has a strong resistance to acids, alkalis, organic solvents, etc., and can maintain stable performance in harsh chemical environments. In the petrochemical industry, many reaction processes need to be carried out in strong corrosive chemical media, polyimide thermoset materials made of pipes, valves and seals, can effectively resist the erosion of chemical media, extend the service life of the equipment, reduce maintenance costs.
Excellent insulating properties
In the electrical field, the excellent insulating properties of polyimide thermoset materials make them indispensable. Its volume resistivity is as high as 10^15 - 10^17Ω・cm, and its dielectric constant is low and stable, so it still maintains good insulating properties even under harsh conditions such as high temperature, high humidity and strong electric field. In the rapidly developing electronic information industry, polyimide thermoset materials are widely used in the manufacture of printed circuit boards (PCBs) and flexible circuit boards (FPCs) to ensure the stability of signal transmission between electronic components, and to prevent the occurrence of circuit short circuits and leakage phenomena.
Widely used "multi-faceted"
With the above excellent performance, polyimide thermoset materials are widely used in many fields, and become an important force to promote the development of various industries.
Aerospace
In the aerospace field, polyimide thermosets are one of the key materials for achieving high performance in flight vehicles. It is used in the manufacture of aircraft wings, fuselage structural components, engine components and thermal insulation materials. Such as Airbus A350 and Boeing 787 and other new-generation passenger aircraft, a large number of polyimide thermoset composite materials, not only reduces the weight of the fuselage, improves fuel efficiency, but also enhances the structural strength and reliability of the aircraft. In addition, in satellites and spacecraft, films made of polyimide thermoset materials are used as the substrate of solar cells and the unfolding mechanism of satellite antennas, which are able to work stably in the extreme space environment.
Electronic information field
The rapid development of the electronic information industry can not be separated from the support of polyimide thermoset materials. In semiconductor manufacturing, it is used as photoresist, encapsulation material and interlayer insulation material. With the development of electronic products in the direction of miniaturisation, thinness and high performance, the performance requirements for materials are getting higher and higher, and polyimide thermoset materials meet the stringent requirements of semiconductor manufacturing by virtue of their excellent heat resistance, insulation and mechanical properties. At the same time, in the flexible display technology, polyimide thermoset materials made of flexible substrates for the realization of flexible display screen provides a possibility, so that foldable mobile phones, curly TV and other new display products gradually into people's lives.
Automotive Industry
Polyimide thermosets meet the increasingly stringent performance and environmental requirements of the automotive industry. In automotive engine systems, it is used to manufacture piston rings, valve seats, turbocharger components, etc., which can withstand high temperatures, high pressures and high speeds. In addition, polyimide thermoset materials can also be used in the manufacture of automotive interior parts, such as instrument panels, door interior panels, etc. Its good flame retardancy and wear resistance improves the safety and aesthetics of automotive interiors. Meanwhile, due to its light weight, it helps to achieve lightweight design of automobiles and reduce fuel consumption and exhaust emissions.
Other Fields
In addition to the above fields, polyimide thermoset materials also have a wide range of application prospects in medical, new energy, environmental protection and other fields. In the medical field, it can be used in the manufacture of artificial heart valves, drug slow-release carriers, etc.; in the field of new energy, the diaphragm and electrode materials made of polyimide thermoset materials can improve the performance and safety of lithium batteries; in the field of environmental protection, it can be used to make highly efficient filtration materials for effective filtration of particulate matter and harmful gases in the air.
Polyimide thermosetting materials with its unique properties and a wide range of applications, in modern science and technology and industrial development plays an irreplaceable role. With the continuous progress of material science and technology, Ningbo Ranlong Electric Co., Ltd, as the first domestic R&D and production company of polyimide materials, is also striving to open up the applicable fields of the products, and strive to show its charms in more fields, and make greater contributions to the development of human society.
