The value of water absorption in nylon is enhanced, the moisture content in the absence of reinforcing fibers is 2.5, the moisture content in the presence of reinforcing fibers of 15%, 30%, and 40% is 1.9%, 1.6%, 1.5%, respectively; / Vertical direction.

The mechanical properties of composite materials are mainly related to the basic resin, the properties of the reinforcing fibers, the degree of bonding between the fibers and the resin interface, the molding and extrusion process, and the length and distribution state of the reinforcing fibers.

Reinforced Nylon To obtain high-strength reinforced nylon-enhanced PA66, it is best to make the reinforced Nylon maintain a large aspect ratio. In the case of a properly combined screw, it is possible to ensure that the reinforced Nylon has a certain length. The general length distribution is 0.2~ The maximum length of .30mm is 0.5mm. Reinforced nylon reinforced nylon and glass fiber reinforced nylon are very different.

Reinforced nylons are not resistant to shearing. The design of the screw assembly must be such that the shear force is appropriate and the fiber length is within the required size range. In the melting zone, it is necessary to ensure that the nylon is fully melted. In the kneading zone, the kneading elements must be properly reduced to ensure that the reinforced nylon has a certain length in order to produce a good reinforcing effect.

In the twin-screw extrusion, under the premise of ensuring that the reinforced nylon is well dispersed in the nylon matrix, it is necessary to ensure that the reinforced nylon has a large aspect ratio so as to maximize the reinforcing effect of the reinforced nylon.

Reinforced nylon is one of the most comprehensive materials, and its price is also relatively expensive. The use of reinforced nylon increases the performance of nylon and also increases the cost and processing difficulty of the finished product.

Therefore, in the case of meeting the conditions of use and design margins, reinforced nylon has an economical addition. Through experiments, it was found that there is a semi-quantitative relationship between the amount of reinforced nylon added and the mechanical properties of the resulting composite.