High Performance HDPE/PA6 Blends

It has been found that HDPE nanocomposites prepared by adding nano-dispersed layered silicates in HDPE (high density polyethylene) have a wide range of practicalities. According to some recent reports, after the addition of ionomer-modified nylon (PA) to HDPE, the presence of nylon in the phase structure of the layered structure can significantly reduce the hydrocarbon permeability of the HDPE/PA blends. The world has proposed the goal of developing suitable micro-structured HDPE/PA nanocomposites. By selecting suitable raw materials and processes, HDPE/PA nanocomposites with high barrier properties are studied and prepared.
For this purpose, a master batch of an organically modified layered silicate and nylon 6 (PA6) based resin having a maximum content of 30% by weight is prepared first, and then blended with HDPE to form a blend with the same composition. The HDPE/PA6 blends have completely different distinct phases. This new HDPE/PA6 blend has higher mechanical properties and barrier properties, about 80% higher than the notched impact strength of HDPE, while HDPE/PA6 nanocomposite has almost the same toluene permeability as pure PA.
The applicable range of HDPE/PA6 nanocomposites can be said to be very clear, such as high barrier automotive fuel tanks and fuel line linings, because such nanocomposites can replace the currently used multi-layer composite materials, and the process and production are simple and have a competitive advantage.