LFT-G Polyamide 66 with addition long glass fiber 20%-60% reinforced plastic as a replacement for metal

What is Polyamide 66 materials?

PA66, abbreviation of Polyamide 66, chemical name polyhexanediylhexanediamine, commonly known as nylon 66.

It is a colorless transparent semi-crystalline thermoplastic polymer, widely used in automotive, electrical and electronic appliances, mechanical instruments and meters, industrial parts and other industries. However, due to the high water absorption, poor acid resistance, low impact strength in dry state and low temperature, and easy to deform after absorbing water, which affects the dimensional stability of the products, the scope of its application has been limited to a certain extent.

In order to improve the above shortcomings, expand its field of application, and better meet the requirements for the use of performance, people use a variety of methods to modify PA66, in order to improve the impact, heat deformation, molding and processing performance and chemical corrosion resistance of PA66 plastic.

As the specific strength and Young's modulus of glass fiber (GF) is 10-20 times larger than PA66, the coefficient of linear expansion is about 1/20 of PA66, the water absorption rate is close to zero, and there is good heat and chemical resistance, etc., so the glass fiber filling is the most commonly used means of enhancement and modification of PA66.

                      Polyamide 66 fillin long glass fiber compounds

Why do we use LFT plastics instead of metal?

Many components that are currently manufactured in
metal can be produced at lower cost and lower weight in
high strength plastics. Compared to metals, plastics offer
a number of significant advantages:

• Faster production cycles
• Lower investment in equipment and tooling
• Elimination of finishing operations, such as machining or painting
• No corrosion problems
• Tighter tolerances
• Easier assembly

What is the difference between Long glass fiber and Stardard glass fiber?

Long glass fiber (LGF) typically contain glass fibers with lengths of 10 to 12 mm, versus 0.7-mm fibers in standard glass-reinforced compounds.

In the composite material made of fibers is sheared or pulled, the fibers are pulled out from the matrix, such a pulling process is conducive to the absorption of energy provided by the loading, the longer the fibers are within a certain length, the greater the absorption of energy, and the more significant its strength. And in the same volume amount, due to the longer the single fiber, the fewer the number of fiber roots, the less stress concentration generated at the fiber end, the more difficult the destruction of the material. From the results of practical application feedback, the various properties of long glass fiber reinforced thermoplastic composites are more excellent than Standard glass fiber.

In addition, glass fiber reinforced composites in the friction process, the fiber body plays an important role in lubrication, long glass fiber can be much more sustainable, stable lubrication, so the coefficient of friction is lower, less wear, and the formation of the abrasive debris is finer.

Because of these advantages, long glass-fiber reinforced thermoplastic composites perform better in real-world applications without fear of high frequencies and high loads.

What is the advantages of Polyamide 66?

Nylon 6/6 is composed of a molecular structure of higher order than Nylon 6, heightening Nylon 6’s positive characteristics: higher tensile strength and stiffness, better dimensional stability, and a higher melting point.

Nylon 6/6 has a high lubricity and resistance to hydrocarbons; and exceptionally balanced strength, ductility, and heat resistance. As strong as it is independently, adding fillers, fibers, lubricants, and impact modifiers can increase Nylon 6/6’s strength times five and stiffness times ten. 

                     TDS of 30% long stand fiber glass reinforced Polyamide 6.6

                 All TDS with 20%-60% fiber specification, please aks technologists

What are the applications of Nylon 66 filling long stand fiber glass pellets?

Frequently asked questions

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. Using a long fiber reinforced thermoplastic material, will it  block the die hole due to the long length of the fiber or not?

A. When using long glass fiber or long carbon fiber, it is necessary to evaluate whether the product is suitable for LFT-G. If the product is too small or the dispensing is not suitable for long fiber materials. The long fiber itself has requirements for mold nozzle.

Q. How to choose the reinforcement method and length of the material when using long fiber reinforced thermoplastic matreial?

A. The selection of materials depend on the products. It is necessary to assess how much the content is enhanced and how much length is more appropriate, which are depending on the performance requirments of the products.

Main materials we produced