1.Long fiber reinforced thermoplastic material is referred to as "LFT", which can be subdivided into: lft-g, lft-d, etc.
2.Lft-g complete set of equipment jointly developed by nanjing chuangbo company and Beijing university of chemical technology, the core lies in the structure optimization and automatic process control technology of melting dip mold, which has the characteristics of high infiltration degree, small fiber damage, stable and controllable process process and high production efficiency.
3.The production line is suitable for PP, PA, PET, PPA, PBT and other thermoplastic tree a grease;
4.Suitable reinforcement fiber: glass fiber, carbon fiber, basalt fiber, etc.
5.The fiber content is 30%, 40%, 50%, 60% controllable, can meet the needs of different customers;
6.Fiber discharge mode can be selected: internal pumping and external pumping.
Characteristics of LFT fell - G
The length of long fiber reinforced granule prepared by LFT-G technology can be controlled.
The length of fiber in the final product is not less than 3mm, compared with the traditional short fiber reinforced materials, the product has the characteristics of higher elastic modulus, higher impact resistance and long service life, and has a broad prospect in the process of lightweight and high performance parts in aviation, automobile, construction, electrical appliances, household appliances and other industries.
1.Bending and tensile strength increased by about 100%-300%;
2.Impact resistance increased by 2-3 times;
3.Excellent high-temperature creep resistance, high impact strength at low temperature, suitable for high and low temperature alternating frequent occasions;
4.High size accuracy, small deformation, vertical and horizontal shrinkage rate is small and consistent;
5.Simple molding, good fatigue resistance, good molding performance;
6.Low warp, little glass fiber exposure, good surface performance;
7.Recycling, green environmental protection.
Long fiber reinforced thermoplastics (LFRT) are being used in high mechanical injection molding applications.
Although LFRT technology can provide good strength, stiffness and impact performance, the processing method of this material plays an important role in determining the performance of the final components.
In order to successfully shape LFRT, it is necessary to understand some unique characteristics of LFRT.
Understanding the differences between LFRT and conventional reinforced thermoplastics drives the development of equipment, design and processing technologies to maximize the value and potential of LFRT.
The difference between LFRT and conventional cut and short glass fiber reinforced composites is the length of the fibers.
In LFRT, the length of fiber is the same as that of grain.
This is due to the fact that most LFRTS are produced by pultrusion rather than shear mixing.
In LFRT manufacturing, continuous strands of glass fiber roving without twist are pulled into a die head for coating and impregnating resin. From the die head, this continuous reinforced plastic strip is chopped or pelleted, usually to a length of 10 to 12mm.
In contrast, conventional short glass fiber composites contain only 3 to 4mm long chopped fibers, which are further reduced to less than 2mm in a shear extruder.
Long glass fiber reinforced thermoplastic (LGFRT) is a kind of composite material with light weight and high strength.
This kind of composite material is mainly used in the higher requirements than short-cut glass fiber reinforced thermoplastic materials, and has been widely used in the automotive industry, machinery manufacturing, electronic appliances, chemical environmental protection, aerospace communications, construction and other sectors and industries.
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