搜索结果: 1-15 共查到“polypropylene”相关记录67条 . 查询时间(0.114 秒)
Deposition of gum rosin microspheres on polypropylene microfibres used in face masks to enhance their hydrophobic behaviour
Gum rosin Coating Polypropylene Electrospraying Face mask COVID-19
2023/12/11
The present study aims to investigate the effects of gum rosin (GR) microspheres coating over the hydrophobicity of the outer layer of a polypropylene (PP) based surgical face mask. The gum rosin coat...
Sustainable rosin acid ester as internal electron donors in Ziegler-Natta catalysts for synthesis of isotactic polypropylene with high melt flow rate
Bio-derived rosin acid esters internal electron donors Ziegler-Natta catalyst polypropylene polymerization
2023/12/11
In this contribution, novel bio-derived rosin acid ester compounds have been developed and used as internal electron donors to prepare MgCl2?supported titanium catalysts for propylene polymerization. ...
High effects of smoke suppression and char formation of Ni-Mo/Mg(OH)(2)for polypropylene
aromatization catalytic carbonization core-shell hybrids MWCNTs
2023/6/21
The Ni-Mo/Mg(OH)(2)(NMM) hybrid as an efficient flame retardancy and smoke suppression composite for polypropylene (PP) was synthesized through Ni-Mo co-precipitation on the surface of Mg(OH)(2)(MH) h...
Repair of cleft palate in a calf using polypropylene mesh and palatal mucosal flap: a case report
cleft palate surgical treatment calf
2015/4/7
The soft palate plays a critical role in the oral and pharyngeal phases of swallowing. Congenitally cleft soft palates (palatoschisis) in calves are rare and pose a serious challenge for surgical corr...
A modified salvage technique in surgical repair of perineal hernia in dogs using polypropylene mesh
perineal hernia dog polypropilene mesh
2015/3/5
In 16 male dogs who suffered from perineal hernia, polypropylene mesh was used to close a defect in the pelvic diaphragm. Pelvic bone was drilled on the pelvic floor and mesh was sutured through holes...
The effect of polypropylene fleece covering on the yield of early potatoes
early potatoes fleece yield variety soil temperature
2015/1/21
In 2000–2003 the effect of white fleece Pegas-agro 17 UV on the dynamics of yield formation in irrigated early potatoes (Adora and Impala varieties) was investigated in an early potato production regi...
Extensional-flow-induced Crystallization of Polypropylene
Extensional-flow-induced Crystallization Polypropylene
2014/10/23
A filament stretching extensional rheometer with a custom-built oven was used to investigate the effect of uniaxial flow on the crystallization of polypropylene. Prior to stretching, samples were heat...
Self-nucleated Crystallization of a Branched Polypropylene
physical gel point gel stiffness
2014/10/21
Long chain branched polypropylene (LCBPP) crystallizes rapidly and with high nucleation density. The origin of this fast crystallization process is not well understood. It has been attributed to its c...
Determination of oxygen permeability of polyethylene and polypropylene nonwoven fabric foils
gas transmisivity equipment construction packaging mulching
2014/2/24
The paper deals with determination of oxygen permeability of the polyethylene and polypropylene foils applied in
mulching and food packaging. The construction of the equipment of measurement of gas ...
Feasibility of using polypropylene ground cover upon consideration of long-term responses of sweet cherry nutrition and profitability
Polypropylene Ground Cover Sweet Cherry Leaf Nutrition
2013/2/28
The impacts of synthetic polypropylene ground cover in the row area of sweet cherry (Prunus avium L.) trees (‘Regina’/’Gisela 6’) on soil nutrient availability, tree mineral nutrition and productivity...
Polypropylene Embedded Metal-Mesh Broadband Achromatic Half Wave Plate for Millimeter Wavelengths
Polypropylene Embedded Metal-Mesh Broadband Achromatic Half Wave Plate Millimeter Wavelengths
2011/8/17
Abstract: We describe a novel multi-layered metal mesh achromatic half wave plate for use in astronomical polarimetric instruments. The half wave plate is designed to operate across the frequency rang...
Polypropylene Embedded Metal-Mesh Broadband Achromatic Half Wave Plate for Millimeter Wavelengths
Embedded Metal-Mesh Broadb Achromatic Half Wave Plate Millimeter Wavelengths
2011/10/11
We describe a novel multi-layered metal mesh achromatic half wave plate for use in astronomical polarimetric instruments. The half wave plate is designed to operate across the frequency range from 125...
Step-Scan DSC Study on the Melting Behavior of Polypropylene/Attapulgite Nanocomposites
Attapulgite Melt Nano Composite Polypropylene (PP) Recrystallization
2011/11/22
Attapulgite(AT) was modified by grafting with butyl acrylate(BA) via polymerizations initiated by Gamma radiation. The polypropylene(PP)/AT nanocomposites were synthesized via melting extrude in a twi...
Creep and recovery of polypropylene/carbon nanotube composites
Creep and recovery Constitutive behavior Mechanical testing Nanocomposite Carbon nanotube
2015/3/30
The creep and recovery of polypropylene/multi-walled carbon nanotube composites were studied. It was found for thermoplastics in general that the creep strain reduces with decreased temperature, and w...
Processing and characterization of halloysite nanotubes filled polypropylene nanocomposites based on a masterbatch route: effect of halloysites treatment on structural and mechanical properties
nanocomposites polypropylene halloysite nanotubes masterbatch
2011/12/14
Halloysites/polypropylene nanocomposites with different nanotubes contents were prepared by diluting a masterbatch containing 30 wt.% halloysites with polypropylene (PP). Unmodified (HNTs) and quatern...