CNC polyimide parts

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Product details

Exploring polyimide thermosets: the "all-purpose material" with outstanding performance

Polyimide thermoset materials are undoubtedly a bright star in the vast starry sky of materials science. With a range of amazing properties, it has shown great vitality in many fields, from cutting-edge aerospace applications to the smallest details of everyday life. So what is so unique about this amazing material? And in what areas does it play a key role?

Unique structure creates excellent performance

The excellent performance of polyimide thermosets stems from its unique molecular structure. The main chain of the molecule is formed by polycondensation of aromatic dianhydrides and aromatic diamines, a structure that gives the material a high degree of stability. Strong interactions between the molecular chains, such as hydrogen bonding and π-π stacking, maintain the structural integrity of the material at elevated temperatures, which is the fundamental reason for its outstanding heat resistance.

The "Warrior" of High Temperature Resistance

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.

Product details and functional properties of polyimide components

Polyimide parts have demonstrated their value in a wide range of industrial applications due to their high-performance material properties. At the level of product details, its core material adopts aromatic polyimide resin matrix, manufactured through moulding or injection moulding process, with micron-level precision control capability. Key parameters include glass transition temperature (260-370°C), tensile strength (80-120MPa) and media corrosion resistance (stable within the range of PH value 0-14). Functional properties: 1. Outstanding temperature resistance, can work in -269 to 400 ℃ environment for a long time; 2. Excellent mechanical stability, creep resistance of ordinary engineering plastics more than 3 times; 3. High-frequency dielectric loss is less than 0.003 (1GHz test conditions), suitable for precision electronic components; 4. Significant self-lubricating properties, the coefficient of friction can be controlled in the range of 0.1-0.3. Typical applications cover aerospace high-temperature resistant connectors, semiconductor manufacturing high-temperature resistant fixtures, automotive industry high-load structural components and other scenarios, through the modular design to meet the needs of different working conditions.

Operating procedures and daily operation of polyimide parts and components

Polyimide parts are widely used in the industrial field due to its high temperature resistance, corrosion resistance and other characteristics. This article from the operation process and routine maintenance of the two aspects of the description.

The operation process is divided into three stages: pre-processing stage with a dust-free cloth to remove surface impurities, to ensure that the operating environment humidity ≤ 40%; processing and forming stage requires the use of CNC machine tools for cutting, control the processing temperature in the range of 200-280 ℃, to avoid carbonisation of the material; post-processing stage needs to be processed with ultrasonic cleaning equipment to remove processing residues.

Daily operation includes three key points: loading and unloading using anti-static tools, prohibit direct contact with bare hands; regular inspection needs to focus on surface cracking and dimensional deviation, it is recommended that quarterly measurement of tolerance (± 0.05mm for the threshold); storage environment should be maintained in a dry and ventilated environment, it is recommended that the temperature of 20-30 ℃ and the relative humidity of ≤ 50%, to avoid contact with organic solvents.

Correct operation and maintenance can prolong the service life of the parts, it is recommended to establish a standardised operation manual and regular training of operators to ensure that the process is standardized.