High Density Polyethylene Composites Reinforced with Hybrid Inorganic Fillers: Morphology, Mechanical and Thermal Expansion Performance

Abstract

Abstract:The effect of individual and combined talc and glass fibers (GFs) on mechanical and thermal expansion performance of the filled high density polyethylene (HDPE) composites was studied. Several published models were adapted to fit the measured tensile modulus and strength of various composite systems. It was shown that the use of silane-modified GFs had a much larger effect in improving mechanical properties and in reducing linear coefficient of thermal expansion (LCTE) values of filled composites, compared with the use of un-modified talc particles due to enhanced bonding to the matrix, larger aspect ratio, and fiber alignment for GFs. Mechanical properties and LCTE values of composites with combined talc and GF fillers varied with talc and GF ratio at a given total filler loading level. The use of a larger portion of GFs in the mix can lead to better composite performance, while the use of talc can help lower the composite costs and increase its recyclability. The use of 30 wt % combined filler seems necessary to control LCTE values of filled HDPE in the data value range generally reported for commercial wood plastic composites. Tensile modulus for talc-filled composite can be predicted with OPEN ACCESSMaterials 2013, 6 4123 rule of mixture, while a PPA-based model can be used to predict the modulus and strength of GF-filled composites.

Rheological and dynamic mechanical properties of polymer-bonded magnets based on Sm2Co17 and polyamide-12

“…The storage modulus Figure 9 shows that the storage modulus increased with increasing concentration of Sm 2 Co 17 particles at all temperatures, which is consistent with earlier reports on filled polymers [4,[27][28][29][30]. The trend in modulus versus filler content at 25°C followed relatively well the lower bound relationship (see Fig.…”

Effect of surfactant and radiation treatment on the morphology and properties of PP/EG composites

“…This is the result of the inherent stiffness of the EG platelets, and the interaction between PP and EG which restricted the PP segmental mobility. It is well known that stiff inorganic fillers will increase the modulus of polymer composites [33,34]. The SDS-EG containing samples have lower modulus values than the corresponding EG composites.…”

The Method of Increasing the Thermostability of Filled Polymers

“…The use of Irganox 1010 and Irganox B561 at a conventional method of introduction leads to increased resistance to temperature (samples 2, 6,9,13,16,20), so there is the enhancing effect of the stabilizer and filler. For the compositions produced by the novel process, there is a significant increase in resistance to the thermal oxidation destruction (samples 3, 10, 12, 14, 21).…”