Materiais modificados de alta qualidade LFT-G PEEK preenchem fibra de carbono longa para bom desempenho automotivo

What is PEEK?

Polyether ether ketone (PEEK) is a semi-crystalline thermoplastic polymer material with rigid benzene ring, compliant ether bond and carbonyl group which can promote the intermolecular force in its molecular chain. PEEK has excellent wear resistance, electrical insulation, anti-radioactivity, chemical stability, biocompatibility and thermal stability. In addition, PEEK is reusable and has a high recovery rate.

PEEK is widely used in aerospace, electronic and electrical appliances, biomedicine, Marine protection, automobile industry and other fields. PEEK material is an inert material with low surface free energy, and its mechanical properties and frictional properties cannot meet the needs of some special fields. Therefore, it is necessary to modify PEEK composite material to improve its comprehensive properties.

At present, filling modification and blending modification are the main methods for preparing PEEK composite materials. Filler modified reinforcement materials mainly include fiber, inorganic particles and whisker; The polymer used for blending modification should have similar polarity and solubility to PEEK. The interface modification method can improve the interface adhesion and enhance the comprehensive properties of PEEK composites.

What is PEEK-LCF?

As a filling system, fiber can effectively carry part of the load, and the synergistic action between fiber and PEEK can improve the comprehensive performance of composite materials. Carbon fiber and glass fiber are widely used as filler modified composites because of their high strength, high modulus and high durability. Long carbon fiber (LCF) can be used as heterogeneous nucleating agent to promote the crystallization of PEEK in composite materials, which can effectively improve the mechanical and tribological properties of composite materials.

PEEK/CF composites of different lengths were prepared by injection molding, and their infiltrating and tribological properties were studied. The results show that the addition of CF increases the contact Angle and decreases the hydrophilicity of the composites. But the friction coefficient of composites is reduced and the friction resistance is improved. Long carbon fiber (LCF) has better effect on reducing friction coefficient than short carbon fiber (SCF).

TDS for reference

Application

Q&A

1. What are the advantages of long carbon fiber materials?

A: Thermoplastic LFT Long carbon fiber material has high rigidity, good impact strength, low warpage, low shrinkage, electrical conductivity and electrostatic propertiea, and its mechanical properties are better than glass fiber series. Long carbon fiber has the characteristics of lighter and more convenient processing to replace metal products.

2. Are there any special process requirements of long carbon fiber injection molding products?

A: We must consider the requirements of long carbon fiber for the injection molding machine screw nozzle, mold structure and injection molding process. Long carbon fiber is a relatively high cost material, and need to evaluate the cost performance problem in the selection process.

3. The cost of long fiber products is higher. Does it has a high recycling value?

R: O material termoplástico de fibra longa LFT pode ser muito bem reciclado e reutilizado.

Iremos oferecer-lhe:

1. Parâmetros técnicos dos materiais LFT e LFRT e design de ponta

2. Projeto frontal do molde e recomendações

3. Fornecer suporte técnico, como moldagem por injeção e moldagem por extrusão