LFT-G Homo Polypropylene PP filling Long carbon fiber injection molding high toughness and strength composites

PP-LCF composites

Polypropylene is a low-cost, excellent performance, widely used polymer materials, through the carbon fiber reinforced, can improve the strength, heat distortion temperature and dimensional stability of polypropylene materials, expanding the application of polypropylene materials, widely used in electronic and electrical appliances, automotive, construction and other fields. Especially in the automotive field, with the development of new energy vehicles and in the trend of automotive lightweight, carbon fiber reinforced materials in the automotive field is more and more widely used.

Characteristics of long carbon fiber reinforced polypropylene materials

Higher mechanical properties

Simple production, easy molding, low warpage

Lower density, lightweight, can replace steel with plastic

Application

The modified polypropylene material reinforced by carbon fiber has a series of advantages such as light weight, high modulus, high specific strength, low coefficient of thermal expansion, high temperature resistance, thermal shock resistance, corrosion resistance, good vibration absorption and so on, and it can be applied to automobile sub-instrument assembly and other automobile parts.

Car Tool Kit

Automotive front-end components

More application fields, please contact us for more technical advice.

Frequently asked questions

1. What are the types of thermoplastic carbon fiber composites?

Carbon fiber thermoplastic composites are composites with carbon fiber as reinforcing material and thermoplastic resin as matrix. From the reinforcement of carbon fiber, it can be divided into long-cut carbon fiber (LCF)-reinforced thermoplastic composites, short-cut carbon fiber (SCF)-reinforced thermoplastic composites and continuous carbon fiber (CCF)-reinforced thermoplastic composites.
Long-cut carbon fiber and short-cut carbon fiber mainly refers to the application length of carbon fiber materials, there is no strict fixed distinction between the two, generally between a few millimeters to a few centimeters, the more common specifications are 6mm, 12mm, 20mm, 30mm, 50mm.

Carbon fiber thermoplastic composites can also be classified according to the thermoplastic resin, there are many common thermoplastic resins, such as PE, PP, PVC, etc., but the thermoplastic resin composites reinforced with carbon fibers are mostly used in aerospace, precision equipment, and other demanding working environments, so the carbon fiber thermoplastic composites are more commonly used in the form of polyetheretherketone (PEEK), PPS, polyimide ( Therefore, carbon fiber thermoplastic composites more often use polyether ether ketone (PEEK), PPS, polyimide (PI), polyetherimide (PAI) and other high-end thermoplastic resins as the matrix, to achieve the optimization of the material performance through the way of "strong alliance".


2. How do thermoplastic carbon fiber composites achieve low cost and environmental protection?

Thermoplastic carbon fiber composites are used to make parts for high-end machinery, and they have excellent machinability, vacuum forming, stamping mold plasticity and bending processability, etc. Moreover, as long as the material reaches a certain temperature again, it can be remolded, which is recyclable and environmentally friendly in terms of the characteristics of the material itself.

For example, Teijin Japan has been able to design a recycling process in the process according to the special needs, and the punched thermoplastic carbon fiber composite material trimmings are shredded, injection molded, and made into recycled materials, which can be used to make small products or injection molded nuts and studs on the carbon fiber prototype parts. This method can reduce the loss of raw materials to a greater extent, improve the use of thermoplastic carbon fiber composite materials, reduce the overall cost, so as to achieve the purpose of environmental protection.

Production process of thermoplastic carbon fiber products
In addition, thermoplastic carbon fiber composites, compared with thermoset carbon fiber composites, can shorten the molding cycle time due to its special process characteristics, which can further cut down the production cost in terms of production efficiency.


3. Are thermoplastic carbon fiber composites only suitable for injection molding?

From the process point of view, injection molding and compression molding compared to a higher degree of automation, the raw material does not contact with the outside world, so the product appearance quality is guaranteed, there will be no black spots, impurities, uneven color and other issues, the mechanical properties of the product, dimensional stability and precision is relatively higher. At present, Toray, Japan, these carbon fiber giants in the application of carbon fiber reinforced thermoplastic composite materials, the main use of injection molding method, and this method is suitable for the production of complex shaped parts and mass production.

Compared with injection molding equipment, compression molding equipment and its mold structure is relatively simple and less expensive to manufacture. Compression molding equipment can be used for both thermosetting resins and thermoplastic resins, and in the molding of thermoplastic carbon fiber products, it is the thermosetting carbon fiber parts made with full reference to the manufacturing experience. The use of compression molding of thermoplastic carbon fiber composite parts, the loss of raw materials is small, will not cause excessive loss, applied to mass production, the price is relative to the injection molding process to better meet the market demand.

We will provide you

1. LFT & LFRT material technical parameters and leading edge design,

2. Mold front design and recommendations,

3. Provide technical support such as injection molding and extrusion molding.

Main materials