نتایج جستجو برای: micro polypropylene fiber

تعداد نتایج: 249866  

2015

Expansive soils are often encountered in many parts of the world, especially in arid and semi-arid fields. Such kind of soils, generally including active clay minerals in low water content, enlarge in volume by absorbing the water through the surface and cause a great harm to the light structures such as channel coating, roads and airports. The expansive soils were encountered on the path of Ap...

2013
Francesc X. Espinach Fernando Julián Manel Alcalà Josep Tresserras

Alpha-grass was studied as the reinforcement in a starch-based polymer matrix. Mater-bi®-Y was chosen as a matrix due to its Young’s modulus, in line with that of polypropylene. The test specimens were injection molded and tensile tested. The obtained results were compared to glass fiber reinforced polypropylene. The reinforcing fibers increased the Young’s modulus significantly, obtaining valu...

2016
Ravi Ayyar Michael Ponting Jia Wang Eric Baer

Fibrous filters were fabricated using a novel melt co-extrusion and two-dimensional multiplication technology combined with a high pressure water jet delamination technique. The filters made from polypropylene (PP) / polyamide 6 (PA6) system exhibited micro to nano scale fibers having uniform fiber distribution and superior mechanical properties. Effects of film draw ratio upon co-extrusion on ...

Journal: :جنگل و فرآورده های چوب 0
منیره ایمانی دانش آموختۀ کارشناسی ارشد، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران علی قاسمیان دانشیار، گروه صنایع خمیر و کاغذ، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، دانشکدۀ مهندسی چوب و کاغذ، گرگان، ایران علیرضا شاکری دانشیار، دانشکدۀ شیمی، پردیس علوم، دانشگاه تهران، تهران، ایران ایمان اکبرپور دانشجوی دکتری، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، دانشکدۀ مهندسی چوب و کاغذ، گرگان، ایران

in this research, old magazine (omg) recycled fiber and glass fiber (gf) were mixed at different levels of 10%, 20%, 30% and 40% (based on weight) with two levels of 50% and 60% polypropylene (pp) and then the produced composites evaluated compared to those from net polypropylene. on the basis of obtained results from normalization equations in different treatments done, two treatments has been...

2015

Expansive soils are often encountered in many parts of the world, especially in arid and semi-arid fields. Such kind of soils, generally including active clay minerals in low water content, enlarge in volume by absorbing the water through the surface and cause a great harm to the light structures such as channel coating, roads and airports. The expansive soils were encountered on the path of Ap...

2015

Expansive soils are often encountered in many parts of the world, especially in arid and semi-arid fields. Such kind of soils, generally including active clay minerals in low water content, enlarge in volume by absorbing the water through the surface and cause a great harm to the light structures such as channel coating, roads and airports. The expansive soils were encountered on the path of Ap...

Iman Mehdipour, Mohammad Shekarchia Nicolas Ali Libre

The sustainability of the built environment is increasingly coming to the forefront of infrastructure design and maintenance decisions. To address this, development of a new class of more sustainable cement-based materials is needed. Fiber reinforced self-consolidating mortar (FRSCM) was developed by optimizing the micromechanical parameters, which control composite properties in the hardened s...

Journal: :journal of the structural engineering and geotechnics 0
iman mehdipour construction materials institute, department of civil engineering, university of tehran, tehran, iran nicolas ali libre department of civil engineering, islamic azad university, qazvin branch, barajin st, qazvin, iran mohammad shekarchia construction materials institute, department of civil engineering, university of tehran, tehran, iran

the sustainability of the built environment is increasingly coming to the forefront of infrastructure design and maintenance decisions. to address this, development of a new class of more sustainable cement-based materials is needed. fiber reinforced self-consolidating mortar (frscm) was developed by optimizing the micromechanical parameters, which control composite properties in the hardened s...

2014
Dr. N. Suresh Sachin

-Concrete has been widely used as a construction material in Buildings and other Industrial Structures. Sufficient research work has been carried out to understand the Mechanical properties like Compressive Strength, Flexural Strength, Tensile strength, Shear strength and Modulus of elasticity. There are many situations in which the concrete undergoes variation in temperatures which will ultima...

Journal: :علوم و تکنولوژی پلیمر 0
احسان باغبان کوچک الهام فلاحی محمد حقیقت کیش

atechnical feasibility study has been conducted on production of nano- and micro-fibrils from nylon 6/polypropylene grafted with maleic anhydride/polypropylene blended films. fibrils are prepared in four consecutive steps.in the first step the polymers melt blended in an extruder with and without compatibilizers to produce chips; in the second step films are extruded from polymer blends chips, ...

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