LFT-G PEEK engineering plastic fill long carbon fiber 30% composites high rigidity strength for automotive parts

PEEK plastic

PEEK is a comprehensive performance of excellent special engineering plastics, with excellent heat resistance, chemical resistance, radiation resistance, electrical properties, flame retardant properties, etc.. Its molecular chain is a polymer composed of a benzene ring and connected ketone and ether groups, and the benzene ring ensures that PEEK materials have good rigidity, and the ether bond ensures that PEEK has good toughness, so that PEEK is a comprehensive material with both toughness and rigidity.

PEEK has the following outstanding properties:

(1) Extremely high heat resistance.
Can be used at 250 ° C for a long time, instantaneous use of the temperature up to 300 ° C, at 400 ° C for a short period of time almost no decomposition.

(2) excellent mechanical properties and dimensional stability.
PEEK can maintain high strength at high temperatures, bending strength at 200°C is still up to 24 MPa, 250°C bending strength and compression strength of up to 12-13 MPa, especially suitable for manufacturing at high temperatures can work continuously in the components. In addition, PEEK also has good creep resistance, can be used in the period of great stress, not due to the extension of time to produce significant extension.

(3) Excellent chemical resistance.
Even at high temperatures PEEK resists corrosion of most chemicals very well, with corrosion resistance similar to that of nickel steel. The only thing that can dissolve PEEK under normal conditions is concentrated sulfuric acid.

(4) Good resistance to hydrolysis.
Can resist chemical damage from water or high-pressure water vapor. Under high temperature and pressure conditions, PEEK components can work continuously in aqueous environments while still maintaining good mechanical properties. If immersed in water at 100 ° C for 200 days, the strength remains almost unchanged.

(5) Good flame retardant properties.
It can reach UL 94 V-0 level, has self-extinguishing property, and releases less smoke and toxic gas under flame condition.

(6) Good electrical properties.
In a wide range of frequencies and temperatures, PEEK can maintain the same electrical properties.

(7) High radiation resistance.
PEEK has a very stable chemical structure, in high doses of ionizing radiation PEEK parts can also work properly.

(8) Good toughness.
Fatigue resistance to alternating stress is the most outstanding of all plastics, comparable to alloy materials.

(9) Excellent resistance to friction and wear.
It can maintain high wear resistance and low friction coefficient at 250°C.

(10) Good processing performance.
Easy to injection molding and high molding efficiency.

PEEK-LCF compounds

Long carbon fiber modified PEEK materials at room temperature, the tensile strength doubled compared to unreinforced, reaching three times at 150°C. At the same time, the reinforced composites also received a substantial increase in impact strength, flexural strength and modulus, with a dramatic reduction in elongation and heat deflection temperatures that can exceed 300°C.

The impact energy absorption rate of the composites directly affects the performance of the composites when subjected to impact, and carbon fiber-reinforced peek composites show a specific energy absorption capacity of up to 180 kJ/kg.

Application

Long carbon fiber modified peek materials are widely used in the fields of aerospace, automotive manufacturing, electrical and electronics, medical and food processing.

For example, applied to orthopedic medical devices, thanks to carbon fiber-reinforced PEEK used in orthopedics five major performance advantages: light weight and strength, wear resistance, good biocompatibility, corrosion resistance, good X-ray permeability, it can be done intramedullary nailing PEEK aiming rod bracket, distal locking with PEEK aiming frame, external fixation bracket with X-ray permeable PEEK heel linkage (spark surface), minimally invasive PEEK guided tail (aiming rod), etc.

TDS for reference

Different properties with different fiber specification

The content of long fiber is not more is better. The suitable content is just to meet the requirements of each products.

Produce process

Our materials are suitable for injection molding and extrusion molding.

Parts of Certifications

Quality Management System ISO9001/16949 Certification

National Laboratory Accreditation Certificate

Modified Plastics Innovation Enterprise

Honorary Certificate

Heavy metal REACH & ROHS testing

Q & A

Q. Does long glass fiber and long carbon fiber injection have special requirements for injection molding machines and molds?

A. There are certainly requirements. Especially from the product design structure, as well as the injection molding machine screw nozzle and mold structure injection molding process must consider the requirements of long fiber.

Q. What are the differences and advantages of long fiber materials and thermosets and staple fibers?

A. Compared with the short fiber, is has more excellent performance in mechanical properties. It is more suitable for large products and structural parts. It has 1-3 times higher toughness than short fiber, and the tensile strength is increased by 0.5-1 times. Compared with thermosets, it is more environmentally friendly. It can be recycled and reused, and has simple molding efficiency, lower cost etc. But its mechanical properties are worse than thermosets.

Q. At present, do you have any clients who use LFT products to replace metal alloys? What are the specifics?

A. Long glass fiber and long carbon fiber can replace metal products, but need to evaluate the products requirements, there are more successful cases in replacing aluminum and iron products. The tensile strength of mechanical properties of LFT long glass fiber and long carbon fiber exceeds 200/MPa, from which it can be a good substitute for aluminum products, and the impact strength is also superior to aluminum products.

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