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/Materiali di comunicazione 5G: plastica composita rinforzata con fibre lunghe LFT-PP
Materiali di comunicazione 5G: plastica composita rinforzata con fibre lunghe LFT-PP 2022-11-30

5G communication network has come, is a new science and technology, the development of polymer materials also brings new opportunities, high-performance material suppliers are actively preparing for the materials needed for 5G communication. Among them, LFT long fiber reinforced composite material can be used in 5G base station radome, equipment frame, bracket, filter and other aspects and is favored. Today, we will talk about LFT material.





1. Definition and characteristics of LDT-PP

long fiber reinforced thermoplastics (LFT) refers to long, continuous glass fibers, After special process is fully infiltrated by resin, wait until the strip, and then cut into a specific size glass fiber reinforced rubber particles or resin soaked long glass fiber strip directly molded or injection molding material. The length of glass fiber in LFT materials is generally more than 3 mm, and its application and development goal is to be used as semi-structural and structural materials.

Among them, the LFT composites based on polypropylene PP have the advantages of light weight and high strength, easy manufacturing and cost optimization. As a new high performance engineering plastics, it has been widely used. Currently, it is the first choice of polymer matrix composites for automotive lightweight.

FEATURE ADVANTAGE
The fiber length is long and evenly distributed
It can improve the comprehensive mechanical properties of molded products
Light specific gravity
It is 20% lighter than glass fiber reinforced nylon and 62% lighter than aluminum alloy
The molding shrinkage is small
Product size stability
It can be recycled and reused
Green and environmental friendly


2. Preparation process of LFT-PP

According to the preparation technology, the LFT-PP high performance composites can be divided into two categories: LFT-G process and LFT-D-ILC process.

2.1 LDT-G process

Firstly, through the mixing of resin, glass fiber and additives, LFT-G long fiber pellets are prepared by special melt impregnation composite method, and then the final product is finished by injection molding process.

The fiber length of LFT varies with the processing process. Impact properties are particularly dependent on the length of the glass fiber. The length of commercial LFT-G colloidal particles is generally 6 ~ 25mm. The LDT-G composite supports semi-mechanism automotive applications, such as front end components, door components, instrument bearers, tailgate and seating systems, combining lightweight and functionality.

2.2 LFT-D-ILC process

The LDT-D-ILC is called the long fiber reinforced thermoplastic material online molding process technology. This process, the online mixing system is integrated in the molding process, matrix particles and additives are transported to the gravimetric feeding unit combination, which ensures appropriate mixing according to the mechanical properties of the component requirements.


3. L' applicazione del

campo automobilistico LFT-PP: il materiale LFT-PP non solo può migliorare efficacemente la rigidità, la resistenza agli urti, la resistenza allo scorrimento e la stabilità dimensionale dei prodotti finiti, ma anche ridurre i costi di produzione dei moduli automobilistici, accorciare il ciclo di stampaggio e preparare sofisticati moduli automobilistici.

Campo 5G: i materiali modificati LFT possono essere utilizzati nelle stazioni base 5G; Il telefono cellulare può essere utilizzato nel guscio del telefono cellulare, nella cover posteriore, nella batteria, nel chip e in altri componenti.





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