Thermal Behavior, Mechanical Property and Microstructure of Low-Density Polyethylene Filled by Diatomite

Abstract:

Diatomite was treated by titanate coupling agent and blended with low-density polyethylene (LDPE) by the method of melt-mixing blend. The performance of the blends, such as thermal behavior, mechanical property and microstructure, were analyzed with differential scanning calorimetry, thermo-gravimetric analysis, tensile strength testing and scanning electron microscopy. The results showed that influenced the crystalline behavior of LDPE phase in the blends and made the crystallization rate of LDPE phase decreased. Moreover, the thermo-decomposing temperature of the blends increased with increasing the diatomite content, diatomite significantly improved the thermal stability of the blends. Tensile strengths of the blends firstly decreased and then increased. When the diatomite content was 30%wt, the tensile strength of the blend reached to 14.6MPa. SEM photographs showed the good dispersion and interaction.

• Periodical: Applied Mechanics and Materials (Volumes 633-634)
• Pages: 413-416
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.633-634.413
• Online since: September 2014
• Authors: Kun Yuan Wang, Qiu Ju Sun*, Yan Liu, Jie Lu
• Keywords: Blend, Composite, Diatomite, Low-Density Polyethylene

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