Study On Low Density Polyethylene/Polyamide 6 Blending Alloy

The study aims to use low density polyethylene which is functionalized by maleic anhydride blending with small amount of polyamide 6 to improve the mechanical and thermal properties of low density polyethylene.Rheology, grafting degree and appearance of the grafting polymer were observed by alternating the maleic anhydride, dicumyl peroxide ratio and processing conditions during the process of functionalized low density polyethylene.Rheological, mechanical and thermal properties as well as the water absorption behavior of the blended polymers using different content of maleic anhydride, dicumyl peroxide ratio and polyamide 6 were studied by using capillary rheometer and DMA tests.The results showed that viscosity of grafted polymer was found to increased with increasing MAH content up to 1.0 phr and then showed decline trend, and the same trend was observed for mechanical, thermal and water absorption properties of blended polymers at the same MAH contentThe properties of grafted and blended polymers increased as the dicumyl peroxide increased.The properties of blended polymers had a close relationship with the polyamide 6 amount and also increased with the increasing of polyamide 6 in a gradient way.The mechanical of the blended polymers increased as the miscibility in system improved, the best mechanical properties were obtained when miscible blend with maleic anhydride and dicumyl peroxide ratio up to 1.0/0.6 phr and of polyamide 6 40% were used.