Carbon Fiber filled PEEK Machined Parts

HONYPLAS®PEEK Polyetheretherketone PEEK can provide hardness, temperature resistance, and lubricating effect by adding fibers such as carbon fiber, glass fiber, graphite, etc.Adding carbon fiber to PEEK: It provides hardness, temperature resistance, and lubricating effect, and is often used for wear-resistant parts of mechanical parts.Adding graphite, carbon fiber, and PTFE to PEEK: improve wear resistance, temperature resistance, and reduce friction factor.Add glass fiber to PEEK: improve hardness, temperature resistance, mainly used in the manufacture of pressure vessels and pressure-resistant occasions.

At room temperature, the tensile strength of 30% carbon fiber reinforced PEEK composite doubles that of unreinforced, and triples at 150°C. It has also been greatly improved, the elongation rate is sharply reduced, and the heat distortion temperature can exceed 300 °C. The impact energy absorption rate of composite materials directly affects the performance of composite materials when subjected to impact. Carbon fiber reinforced PEEK composite materials show a specific energy absorption capacity as high as 180kJ/kg.

The reinforcement effect of carbon fiber can also resist the thermal softening of PEEK to a certain extent and form a very high-strength transfer film, which can effectively protect the contact area. Therefore, the friction coefficient and specific wear rate of carbon fiber reinforced PEEK composite materials are significantly higher than those of pure PEEK. Low. Under the same experimental conditions, the friction and wear resistance of carbon fiber reinforced PEEK composites is significantly better than that of glass fiber PEEK composites, and the improvement effect of carbon fibers on the wear resistance of materials is more than 5 times that of glass fibers with the same amount. Carbon fiber-reinforced PEEK composite materials are used in the production of parts, which can effectively avoid problems such as surface cracks on metal or ceramic materials. Its excellent tribological properties even exceed those of ultra-high molar mass polyethylene.

The main application fields of carbon fiber reinforced PEEK include the following four aspects:

1. Electronic and electrical field

PEEK can still maintain good electrical insulation in harsh environments such as high temperature, high pressure and high humidity, and has the characteristics of not easy to deform in a wide temperature range, so it is used as an ideal electrical insulation material in the field of electronic appliances . The mechanical properties, chemical corrosion resistance, radiation resistance and high temperature resistance of polyether ether ketone reinforced by carbon fiber have been further improved, which further expands its application field.

2. Aerospace field

Because polyetheretherketone PEEK has the advantages of low density and good processability, it is easy to be directly processed into high-demand parts, and the carbon fiber-reinforced polyetheretherketone composite material further enhances the overall performance of polyether ether ketone. It is increasingly used in aircraft manufacturing. For example, the fairing used by Boeing 757-200 series aircraft is made of carbon fiber reinforced PEEK material. In addition, Gereedschappen Fabrick in Amsterdam, the Netherlands, used 30% carbon fiber reinforced PEEK composites to make larger parts and proved that its mechanical properties can be applied to aircraft balance devices.

3. Automotive field

The energy consumption of a car is closely related to the weight of the car. The lightweight of a car can not only reduce fuel consumption and exhaust emissions, but also improve power and safety. It is an effective way for cars to save energy. In addition to the lightweight design of the car, the use of lightweight materials is a more direct method. Carbon fiber reinforced polyether ether ketone composites are more and more frequently used in the automotive industry due to their advantages such as low density, good performance and convenient process, and show great potential to replace steel with plastic. For example, Robert Bosch GmbH uses carbon fiber reinforced PEEK instead of metal as the functional part of ABS. The lighter composite material parts reduce the moment of inertia, thereby minimizing the reaction time and greatly enhancing the response performance of the entire system. Compared with metal parts, the cost is reduced.

4. Medical field

At present, there are dozens of medical polymer materials available such as polytetrafluoroethylene, polylactic acid, silicone rubber, etc., but from a biomedical point of view, these materials are not ideal, and there are some side effects during use, while PEEK resin Because it has the advantages of non-toxic, light weight, and abrasion resistance, it is the closest material to human bones and can be organically combined with the body. Therefore, polyetheretherketone resin and its composite materials have been deeply studied and applied as orthopedic implants in recent years. In the spine, joints and other aspects. Relevant studies have proved that compared with the traditional acetabular prosthesis material ultra-high molecular weight polyethylene, carbon fiber reinforced polyether ether ketone has higher wear resistance and better biocompatibility, and is a future acetabular prosthesis ideal material. Comparing the cytotoxicity of carbon fiber reinforced polyether ether ketone and titanium alloy, it is found that the cytocompatibility of the two is similar. Carbon fiber reinforced polyether ether ketone composites can be used as an alternative material for future orthopedic fixation devices. Medical devices such as carbon fiber reinforced PEEK orthopedic surgical fixation brackets and aimer brackets perform well in terms of strength, corrosion resistance, wear resistance, and heat and humidity resistance, and are expected to be used in more high-end medical devices.

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