نتایج جستجو برای: microporous high density polyethylene hdpe membrane

تعداد نتایج: 2682415  

Journal: :Journal of Applied Polymer Science 2021

The purpose of this study was to investigate the influence aging on properties high-density polyethylene (HDPE) reinforced with multi-wall carbon nanotubes (MWCNTs). Nanocomposites were prepared at 0, 1, 3, and 5 wt%. long-term durability materials evaluated by thermo-oxidative test. Test bodies aged 110°C for up 10 weeks. nanocomposites characterized differential scanning calometry, thermograv...

2018
Xiaohui Yang Guangzhao Wang Menghe Miao Jinquan Yue Jianxiu Hao Weihong Wang

In this study, a pulp beating machine was used to premix the pulp fibers with high density polyethylene (HDPE) particles in water. The wet or pre-dried pulp fiber/HDPE mixture was then melt-compounded by a twin screw extruder. For further improving the dispersion of pulp fiber, some mixture was forced to pass through the twin-screw extruder twice. The resulting mixture was compression molded to...

2007
Yong Lei Qinglin Wu Fei Yao Yanjun Xu

Composites based on recycled high density polyethylene (RHDPE) and natural fibers were made through melt blending and compression molding. The effects of the fibers (wood and bagasse) and coupling agent type/concentration on the composite properties were studied. The use of maleated polyethylene (MAPE), carboxylated polyethylene (CAPE), and titanium-derived mixture (TDM) improved the compatibil...

2012
Mazatusziha Ahmad Mat Uzir Wahit Mohammed Rafiq Abdul Kadir Khairul Zaman Mohd Dahlan

Ultrahigh-molecular-weight polyethylene/high-density polyethylene (UHMWPE/HDPE) blends prepared using polyethylene glycol PEG as the processing aid and hydroxyapatite (HA) as the reinforcing filler were found to be highly processable using conventional melt blending technique. It was demonstrated that PEG reduced the melt viscosity of UHMWPE/HDPE blend significantly, thus improving the extrudab...

Journal: :Dalton transactions 2016
Vojtech Varga Martin Lamač Michal Horáček Róbert Gyepes Jiří Pinkas

Hydrosilane-B(C6F5)3 adducts were found to activate zirconocene dihalides and generate ternary catalytic systems possessing moderate to high activity in ethylene polymerization to high density polyethylene (HDPE). The activation efficacy of the adducts increased with increasing hydride donor ability and decreased with steric crowding of the particular hydrosilane used. NMR investigation of the ...

2009
Mohammad Reza Safizadeh

Individual sealing and tray wrap of orange (Citrus sinensis (L.) Osbeck cv. ‘Valencia’) with heat-shrinkable films of low-density polyethylene (LDPE), high-density polyethylene (HDPE), oriented polypropylene (OPP) and polyvinyl chloride (PVC) were held for a period up to 4 months at 5°C and 85-90% RH. Both methods of film-packaging showed little change in the water relations characteristics, wh...

2012
Ahmed Thabet Youssef A. Mobarak

The base polymer properties have been developed experimentally by adding small amounts of different fillers but they are expensive to the polymer material. Thus, it has been investigated that the incorporation of cost-less nanoparticles like clay and fumed silica nanoparticles into low density polyethylene LDPE and high density polyethylene HDPE which controlled the breakdown strength and volta...

Journal: :Cellulose 2023

Abstract This paper aimed to produce a bio-based filament, suitable for 3D printing (fused deposition modeling), made of surface modified cellulose fiber and high density polyethylene. The fibers (CF) were first transformed into CF-based macroinitiator through an esterification reaction with the 2-bromoisobutyric acid. We finally studied ability this initiate single electron transfer-living rad...

Journal: :Journal of physics 2023

Abstract Microplastics are plastic particles less than 5 mm in size but larger 0.1 µm. Widespread microplastic pollution aquatic and terrestrial environment is raising serious concern globally due to its detrimental impacts on living beings. This urge for the necessity of a sensitive analytical tool, which can facilitate reliable identification microplastics. Micro-Raman spectroscopy enables mo...

2015
Weimin Chen Minzhi Chen Xiaoyan Zhou

The pyrolysis of waste newspaper (WP) and co-pyrolysis of waste newspaper with high-density polyethylene (HDPE) (1:1 wt%) were carried out in a quartz tube at 500 °C to obtain biochars. The biochars were characterized in detail by X-ray diffraction (XRD), thermogravimetric analysis (TG), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), elemental analysis,...

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