Effect of Clay Addition on Mechanical Properties of Unsaturated Polyester/Glass Fiber Composites

Unsaturated polyester (UP)/glass fiber/clay composites were prepared by hand layup method. The effect of clay loading on the morphological and mechanical properties of UP/glass fiber composites was investigated in this study. X-ray diffraction (XRD) was used to characterize the structure of the composites. The mechanical properties of the composites were determined by tensile, flexural, unnotched Charpy impact and fracture toughness tests. XRD results indicated that the exfoliated structure was found in the composite containing 2 wt% of clay while the intercalated structure was obtained in the composite with 6 wt% of clay.Thetensile strength, flexural strength, and flexural modulus of the composites were increased in the presence of clay. The optimum loading of clay in the UP/glass fiber composites was attained at 2wt%, where the improvement in in tensile strength, flexural strength, and flexural modulus was approximately 13, 21, and 11%, respectively. On the other hand, the highest values in impact toughness and fracture toughness were observed in the composites with 4wt% of clay

Kesan Agen Pengkupel Multifungsi Titanat Terhadap Polipropilena Terisi Kalsium Karbonat.

Agen pengkupel titanat komersil iaitu Lica 12 yang dibekalkan oleh Kentrich Petrochemical telah digunakan dalam kajian ini untuk melihat kesannya terhadap PP berpengisi kalsium karbonat. A commercial coupling agent (Lica 12) from Kentrich Petrochemicals has been used in this study to see its effect on calcium carbonate filled polypropylene

Mechanical, Thermal and Morphological Properties of Injection Molded Poly(lactic acid)/Calcium Carbonate Nanocomposites

In this work, mechanical and thermal properties of maleated ethylene-propylene rubber (EPR-g-MAH) toughened poly(lactic acid) (PLA)/nano-precipitated calcium carbonate (NPCC) nanocomposites were investigated. It was found that elongation at break of PLA/NPCC was increased with increasing EPR-g-MAH content up to 15 phr (parts per hundred resin). The investigations on the crystallization behaviours demonstrated that the NPCC acted as nucleating agent for the PLA. However, the degree of crystallinity of PLA was reduced by the addition of EPR-g-MAH which appears to be due to encapsulation of NPCC by the maleated rubber. Dispersion of NPCC was observed using transmission electron microscopy (TEM), and it was revealed that both nano-dispersed and agglomerates NPCC exist in the PLA matrix. Moreover, encapsulation of NPCC was favored in the presence of EPR-g-MAH

Designing High Water Resistance Woodplastic Composites From Steam Exploded Fiber And High-Density Polyethylene.

Composites of high-density polyethylene and acetylated steam-exploded Acacia mangium fibers (AAEF) were prepare using a heated 2 roll-mill, compression molded and tested for tensile properties. Komposit polietilina berketumpatan tinggi (HDPE) terisi 'acetylated' gentian kayu Acacia mangium terledak stim terekstrak alkali (AAEF) disediakan menggunakan penggiling bergulung dua panas

Pultruded Natural Fibre Reinforced Composites: Preparation, Properties And Applications

Environmentally friendly composites are today highly required by utilizing natural fibers as reinforcement combined with biodegradable polymer as matrices

Study On Dynamic Mechanical Properties Of Pultruded Kenaf Fiber Reinforced Composites.

This paper reports the dynamic mechanical properties of pultruded kenaf fiber reinforced composites

Characterisation of Water Absorption of Biodegradable Poly(lactic Acid)/Halloysite Nanotube Nanocomposites at Different Temperatures

Poly(lactic acid) (PLA)/6 wt% halloysite nanotube (HNT) nanocomposites were prepared using melt compounding followed by compression molding. Two types of impact modifiers, i.e., maleic anhydride grafted styrene-ethylene/butylene-styrene copolymer (SEBS-g-MA) and N,N'-ethylenebis(stearamide) (EBS) were used to toughen the PLA nanocomposites. The effects of water absorption on the thermal and impact properties of PLA/HNT at three different temperatures (i.e. 30°C, 40°C and 50°C) were investigated. The diffusion coefficient (D) of PLA was decreased by the incorporation of HNT and impact modifiers. It was found that the activation energy of water absorption (Ea) of PLA/HNT6/EBS is higher than that of PLA/HNT6/SEBS-g-MA nanocomposites. The reduction of impact strength, glass transition temperature (Tg), cold-crystallisation temperature (Tcc), and melting temperature (Tm) of the PLA samples is attributed to the hydrolytic degradation of PLA

Pengantar Sains dan teknologi perekat

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