نتایج جستجو برای: polypropylene fibres

تعداد نتایج: 24216  

Journal: :Nanoscale 2013
Kaitlin M Haas Benjamin J Lear

We report the thermal degradation of a solid film of polypropylene carbonate, driven by the photothermal effect of gold nanoparticles. We provide characterization of the products of this chemical reaction and use the known activation barrier for this chemical reaction to discuss the temperatures obtained in the film. In addition, we report the efficiency of the reaction as a function of nanopar...

2003
Arup R. Bhattacharyya T. V. Sreekumar Tao Liu Satish Kumar Lars M. Ericson Robert H. Hauge Richard E. Smalley

Crystallization behavior of melt-blended polypropylene (PP)/single wall carbon nanotube (SWNT) composites has been studied using optical microscopy and differential scanning calorimetry. Polypropylene containing 0.8 wt% SWNT exhibits faster crystallization rate as compared to pure polypropylene. PP/SWNT fibers have been spun using typical polypropylene melt spinning conditions. The PP crystalli...

Journal: :Composites Part B-engineering 2021

Self-reinforced composites (SRCs) offer a high toughness, low cost, good recyclability, formability, and potential for hybridisation. Because matrix fibres are of the same material, SRCs have perfectly compatible fibre-matrix bond. Several commercial available, but no direct comparison these materials can be found in literature. In this study, we therefore compared thermal, tensile, flexural im...

Journal: :Composites Part A-applied Science and Manufacturing 2021

Structural composite materials with good impact resistance are required in several industrial sectors to design parts submitted crashes or falling objects. This work investigates the behaviour of flax fabrics-epoxy and commingled flax-polypropylene (PP) fibres plates manufactured using compression moulding process. An instrumented drop tower was used conduct low velocity tests at energies high-...

Journal: :علوم و تکنولوژی پلیمر 0
سیدجلال نیک رای سعید کاظمی نجفی قنبر ابراهیمی

the creep/recovery behavior of wood flour-polypropylene was compared with medium density fiberboard (mdf) and particleboard. for this purpose, wood flour-polypropylene composites (with and without compatibilizer)were manufactured by using a laboratory twin-screw extruder. the mdf and particleboard panels were obtained from local producers. short term flexural creep tests at 30% of ultimate bend...

2016
Patrick Tungu Louisa A. Messenger Matthew J. Kirby Wema Sudi William Kisinza Mark Rowland

BACKGROUND Universal coverage of long-lasting insecticidal nets (LNs) made from polyester or polyethylene fibres has been adopted as the standard of care to control malaria among at-risk populations. To obtain a WHO recommendation, LNs must undergo prospective monitoring of insecticidal efficacy against mosquito vectors over 3 years of household use. The retention of bioefficacy and physical du...

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