مهندسی نساجی گیلان:. گیل تکس

سایت تخصصی نساجی و پوشاک

مهندسی نساجی گیلان:. گیل تکس

سایت تخصصی نساجی و پوشاک

Designing Of Fancy Yarns Using Novelty Manufacturing Concept

Designing Of Fancy Yarns Using Novelty Manufacturing Concept
P.V. KADOLE, M.C. BURJI, V.MAHESH, S.S.APARAJ
Abstract
Fancy yarns which are also termed as novelty yarns, specialty yarns, effect yarns and fashion orientedyarns. Effect yarns are yarns which are given pre-programmed characters at spinning stageelectronically controlled, and consequently 100% reproducible. It is generated during the spinning process by controlling yarn diameter and length structure of the yarn, by effect devices. Our ultimate aim is to develop electronic programme(EP) for fancy yarns such as slub, Multicount and Multitwist of cotton and polyester-viscose blend using amsler device attached to the LG 5/1 Ring frame machine and provide information about properties, which is measurable and quantifiable, which forms the basis of this paper. Fancy yarns produced showed significant variation for properties like tenacity, breaking elongation, breaking time, U%, relative resistance value and twist per inch, but no significant effect was seen for properties such as hairiness and friction. Multicount yarn is suitable for weaving onhigh-speed looms with eye-catching look.
 Keywords: Classification, Effect device, Slub, Multicount and Multiwist.

ادامه مطلب ...
مدیر سایت چهارشنبه 4 اردیبهشت‌ماه سال 1392 ساعت 07:10 ب.ظ
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Interlacing Metallic Filaments by Rotational Permanent Magnetic

Interlacing Metallic Filaments by Rotational Permanent Magnetic Field
P. Payvandy, M. Latifi, and M. Agha-Mirsalim
Abstract
In this paper the possibility of interlacing current-carrying conductive filaments in a rotational permanent magnetic field is described. The work contains two parts. Firstly, the effect of magnetic forces on current-carrying conductive filaments in a rotational permanent magnetic field is theoretically studied. Secondly, in accordance with the theoretical analysis, a prototype of the proposed system is designed and tested. The experimental results prove the capability of the method to interlace conductive filaments. The proposed method can be employed as a kernel to reach a texturing system for conductive filaments
Keywords: Conductive Filaments, Interlacing, Permanent Magnets, Rotational Magnetic Field

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مدیر سایت چهارشنبه 4 اردیبهشت‌ماه سال 1392 ساعت 07:04 ب.ظ
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A Novel Application of the Regenerated Cellulose as the Coating

A Novel Application of the Regenerated Cellulose as the Coating of PET Filaments
 Dariush Semnani, Mohammad Sheikhzadeh, Zahra Mazrouei, Bentolhoda Abedinzadeh

Abstract
Combination of various manmade polymers has been developed to make fibers with special properties. Fibers are combined at a generation process such as soluble or melting polymers or spinning process such as filament, staple, sliver, yarn, etc. Hybrid blended yarns have been produced as the common form of yarns used in textile industry. Most of the spun blended yarns are produced through cotton-polyester or viscose-polyester in the spinning process. The cellulose fibers blended in spun yarns should be at least 1 inch in length with appropriate surface properties to be blended with polyester staple fibers in spinning. This matter causes limitation in using the cheap materials. In this research, a novel method for blending regenerated cellulose structure with polyester filaments has been examined. Polyester filaments in various forms were coated by viscose layer. Properties of produced yarn were experimented for surface properties, handle and moisture absorbance ability. The result presented that all properties of the samples were improved specially in moisture absorbance, handle and appearance.
Keywords: Hybrid yarns, Wood pulp, Polyester, Viscose, Rayon, Coating
ادامه مطلب ...
مدیر سایت چهارشنبه 4 اردیبهشت‌ماه سال 1392 ساعت 07:02 ب.ظ
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On the Reinforcement of Steel-Slag Asphalt-Concrete Structures U


On the Reinforcement of Steel-Slag Asphalt-Concrete Structures Using Poly Propylene Fibers

Sayyed MAHDI Abtahi, Reza Khodadadi , Saeed Puladsaz , Ehsan Tavakkoland Sayyed MAHDI Hejazi

Abstract

Asphalt Concrete (AC), a mixture of bitumen and aggregates, is a sensitive structure compared with other civil configurations. So, Scientists and engineers are constantly trying to improve the performance of asphalt pavements. Generally Fibers and Polymers are two important cases used in this way. But the most popular bitumen modification

technique is polymer modification. However, it has been claimed that among various modifiers for asphalt, fibers have gotten much attention for their excellent improvement effects. On the other hand; Steel Slag is the major byproduct from the conversion of iron to steel. Recently; it has evolved as an ideal aggregate in AC Structures because of its admirable mechanical properties. Therefore the aim of this paper has been concentrated to investigate the effect of Poly Propylene, PP, fibres on the mechanical properties of asphalt- concrete made from steel slag. This innovative mixture was evaluated by Marshall and Specific Gravity Tests. Thus it was found that using steel slag aggregates improved optimized bitumen content, stability, flow and specific gravity. Fiber attendance enhanced stability while flow declined in both cases (steel slag and conventional aggregates). Specific gravity did not significantly change. Finally, Dunnet Test, a novel statistical test, was employed to evaluate data and to compare different treatments.

Keywords: Asphalt Concrete, Reinforcement, Poly Propylene Fibres, Dunnet Test.

ادامه مطلب ...
مدیر سایت چهارشنبه 4 اردیبهشت‌ماه سال 1392 ساعت 06:58 ب.ظ
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Compressive Behavior of Composite Soils Reinforced with Recycled

Compressive Behavior of Composite Soils Reinforced with Recycled Waste Tire Cords and Poly Propylene Fibres
Sayyed MAHDI Abtahi, Mohammad Sheikhzadeh, Younes Hassani, and Sayyed MAHDI Hejazi
Abstract
With the reduction of available land resources, more and more construction of civil engineering structures is carried out over weak or soft soil, which leads to the establishment and development of various ground improvement techniques such as soil stabilization and reinforcement. Several reinforcement methods are available for stabilizing expansive soils. These methods comprise stabilization with chemical additives, rewetting, soil replacement, compaction control, moisture control, surcharge loading, and thermal methods. Recently; for a second time, one of the early methods has been introduced to civil projects, i.e. random fibre reinforcement. However, very limited information has been reported on the use of randomly distributed discrete fibres for soil reinforcement. In this paper, a novel method of soil reinforcement using a mixture of Recycled Waste Tire Cords, RWTCs, and/or discrete Poly Propylene, PP, fibres with Poly Vinyl Acetate, PVAc, was introduced. PVAc was chosen from our previous work. Thus it had been found that PVAc would be a suitable binder of soil projects. Consequently, it was derived that the cumulative effect of fibres and PVAc performance leads to obtain 800%-1000% increase in compressive strength of modified soil samples. Accordingly, it appears that soil projects would be a suitable candidate to leave RWTCs.
 Keywords: Soil Stabilization, Soil Reinforcement, Recycled Waste Tire Cords, Poly Propylene Fibres, and Poly Vinyl Acetate.

ادامه مطلب ...
مدیر سایت چهارشنبه 4 اردیبهشت‌ماه سال 1392 ساعت 06:56 ب.ظ
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ﺑﺮرﺳﻲ ﺧﺼﻮﺻﻴﺎت اﻟﻜﺘﺮﻳﻜﻲ و ﺣﺮارﺗﻲ ﭘﺎرﭼﻪ ﻫﺎی ﺣﻠﻘﻮی ﺑﺎﻓ


ﺑﺮرﺳﻲ ﺧﺼﻮﺻﻴﺎت اﻟﻜﺘﺮﻳﻜﻲ و ﺣﺮارﺗﻲ ﭘﺎرﭼﻪ ﻫﺎی ﺣﻠﻘﻮی ﺑﺎﻓﺘﻪ ﺷﺪه ﻫﻤﺮاه ﺑﺎ ﺳﻴﻢ ﻓﻴﻼﻣﻨﺘﻲ ﻓﻠﺰی
 اﻧﺴﻴﻪ ﺣﺎﺟﺐ ، رﻫﺎ ﭘﻮرﺑﺎﻗﻲ ، ﭘﺪرام ﭘﻴﻮﻧﺪی

ﭼﻜﻴﺪه
ﺻﻨﻌﺖ ﻧﺴﺎﺟﻲ اﻣﺮوزه ﺑﻪ ﺳﻮی ﺗﻮﻟﻴﺪ ﻣﻨﺴﻮﺟﺎﺗﻲ ﭘﻴﺶ ﻣﻲ رود ﻛﻪ ﻋﻼوه ﺑﺮ ﻛﺎرﺑﺮدﻫﺎی ﻣﻌﻤﻮل ﺑﻪ ﻋﻨﻮان ﺣﺴﮕﺮ و ﻋﻤﻠﮕﺮ ﻣﺎﻧﻨﺪ ﺗﻮﻟﻴﺪ ﮔﺮﻣﺎ در ﺳﺮﻣﺎ و ﺑﺎﻟﻌﻜﺲ ﻧﻴﺰ ﻗﺎﺑﻞ اﺳﺘﻔﺎده ﻣﻲ ﺑﺎﺷﻨﺪ از آﻧﺠﺎﻳﻲ ﻛﻪ ﭘﺎرﭼﻪ ﻫﺎی ﺣﻠﻘﻮی ﺑﻪ ﻃﻮر ﮔﺴﺘﺮده ای در ﺗﻮﻟﻴﺪ ﭘﻮﺷﺎک اﺳﺘﻔﺎده ﻣﻲ ﺷﻮﻧﺪ اﻣﺮوزه در زﻣﻴﻨﻪ ﺗﻮﻟﻴﺪ ﭘﺎرﭼﻪ ﻫﺎی رﺳﺎﻧﺎ ﻣﻮرد ﺗﻮﺟﻪ ﻗﺮار ﮔﺮﻓﺘﻪ اﻧﺪ . در اﻳﻦ ﻣﻘﺎﻟﻪ ﺑﻪ ﺑﺮرﺳﻲ ﺧﺼﻮﺻﻴﺎت اﻟﻜﺘﺮﻳﻜﻲ و ﺣﺮارﺗﻲ ﭘﺎرﭼﻪ ﻫﺎی ﺣﻠﻘﻮی ﺑﺎﻓﺘﻪ ﺷﺪه ﻫﻤﺮاه ﺑﺎ ﺳﻴﻢ ﻓﻴﻼﻣﻨﺘﻲ ﻓﻠﺰی ﭘﺮداﺧﺘﻪ ﺷﺪه اﺳﺖ ﺑﺮای اﻳﻦ ﻣﻨﻈﻮر ﻧﻤﻮﻧﻪ ﻫﺎﻳﻲ از ﭼﻨﺪ ﻧﻮع ﻃﺮح ﺑﺎﻓﺖ ﻣﻮرد آزﻣﺎﻳﺶ ﻗﺮار ﮔﺮﻓﺘﻨﺪ و راﺑﻄﻪ ی ﺑﻴﻦ ﺟﺮﻳﺎن اﻟﻜﺘﺮﻳﻜﻲ – زﻣﺎن، دﻣﺎ – زﻣﺎن، ﺟﺮﻳﺎن اﻟﻜﺘﺮﻳﻜﻲ - ﻧﻴﺮو و ﺟﺮﻳﺎن اﻟﻜﺘﺮﻳﻜﻲ - ﻛﺸﺶ ﻣﻮرد ﺑﺮرﺳﻲ ﻗﺮار ﮔﺮﻓﺖ. ﻧﺘﺎﻳﺞ ﺣﺎﺻﻠﻪ ﻧﺸﺎن ﻣﻲ دﻫﺪ ﻛﻪ ﺑﺎ ﮔﺬﺷﺖ زﻣﺎن، دﻣﺎی اﻧﺪازه ﮔﻴﺮی ﺷﺪه اﻓﺰاﻳﺶ ﻣﻲ ﻳﺎﺑﺪ. ﻫﻤﭽﻨﻴﻦ اﻓﺰاﻳﺶ ﻓﺸﺎر، ﻛﺎﻫﺶ ﺟﺮﻳﺎن اﻟﻜﺘﺮﻳﻜﻲ را ﺑﻪ دﻧﺒﺎل ﺧﻮاﻫﺪ داﺷﺖ. در ﻣﻮرد اﻓﺰاﻳﺶ ﻛﺸﺶ روﻧﺪ ﺧﺎﺻﻲ ﻣﺸﺎﻫﺪه ﻧﺸﺪ .
واژهﻫﺎی ﻛﻠﻴﺪی : ﭘﺎرﭼﻪ ﻫﺎی ﺣﻠﻘﻮی، ﺧﺼﻮﺻﻴﺎت اﻟﻜﺘﺮﻳﻜﻲ و ﺣﺮارﺗﻲ، ﺳﻴﻢ ﻓﻠﺰی

ادامه مطلب ...
مدیر سایت چهارشنبه 4 اردیبهشت‌ماه سال 1392 ساعت 06:54 ب.ظ
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Physical and Mechanical Properties of Bitumen Reinforced with Po

Physical and Mechanical Properties of Bitumen Reinforced with Poly Propylene Fibers
Sayyed MAHDI Abtahi, Mohammad Sheikhzadeh, Reza Alipour ،and Sayyed MAHDI Hejazi

Abstract
 Asphalt Concrete (AC), a mixture of bitumen and aggregates, is a sensitive structure compared with other civil configurations. So, Scientists and engineers are constantly trying to improve the performance of asphalt pavements. Modification of the asphalt binder, bitumen, is one approach taken to improve pavement performance. In this paper, the importance of fiber reinforced bitumen structures, especially in pavement engineering, was explained. In this way, Polypropylene (PP) fiber modified bitumen samples were fabricated with different conditions included: three percentages of PP fibers (0.25, 0.5 and 1 by the total weight of the mixture), two types of bitumen i.e. 60/70 and 85/100, mixing temperatures of 135 and 165 0C, and finally the lengths of 6 and 12 mm. The tests comprised ductility, penetration and softening point. Wholly and by the experimental results, it was found that fiber reinforced bitumen structures show less susceptibility to temperature, by increasing softening point, and daily traffic load, by decreasing penetration and ductility compared with the neat (unmodified) bitumen.
Keywords: Bitumen, Reinforcement, Poly Propylene Fibres, and Ductility.

ادامه مطلب ...
مدیر سایت چهارشنبه 4 اردیبهشت‌ماه سال 1392 ساعت 06:52 ب.ظ
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ﺑﺮرﺳﻲ ﺗﺎﺛﻴﺮ ﻣﺘﻐﻴﺮﻫﺎی ﺳﺎﺧﺘﺎری و ﺑﻌﺪ ﺳﻮم ﺑﺮ ﺟﺬب ﺻﻮت در

ﺑﺮرﺳﻲ ﺗﺎﺛﻴﺮ ﻣﺘﻐﻴﺮﻫﺎی ﺳﺎﺧﺘﺎری و ﺑﻌﺪ ﺳﻮم ﺑﺮ ﺟﺬب ﺻﻮت در ﭘﺎرﭼﻪﻫﺎی ﺣﻠﻘﻮی ﭘﻮدی
ﺣﺴﻴﻦ ﺣﺴﻨﻲ ، ﻣﺤﻤﺪ ذرهﺑﻴﻨﻲ  ، ﻣﻬﺮﻧﻮش ﻛﻴﺎﻣﻬﺮ
ﭼﻜﻴﺪه
در اﻳﻦ ﻣﻘﺎﻟﻪ، ﺧﻮاص ﺟﺬب ﺻﻮت ﭘﺎرﭼﻪﻫﺎی ﺣﻠﻘﻮی ﭘﻮ دی در ﻓﺮﻛﺎﻧﺲﻫﺎی ﻣﺨﺘﻠﻒ در ﺣﺎﻟﺖ ﻣﺴﻄﺢ و ﺳﻪ ﺑﻌﺪی ﺑﺎ اﺳﺘﻔﺎده از روش ﻟﻮﻟﻪی اﻣﭙﺪاﻧﺲ ﻣﻮرد ﺑﺮرﺳﻲ ﻗﺮار ﮔﺮﻓﺖ. در ﺣﺎﻟﺖ ﻣﺴﻄﺢ ﺟﺬب ﺻﻮت ﺑﺎﻓﺖﻫﺎی ﻳﻜﺮوﺳﻴﻠﻨﺪر ﺳﺎده، ﻛﺮاس ﺗﺎک دوﺑﻞ و ﻛﺮاس ﻣﻴﺲ دوﺑﻞ و ﻧﻴﺰ ﺑﺎﻓﺖﻫﺎی دوروﺳﻴﻠﻨﺪر رﻳﺐ و اﻳﻨﺘﺮﻻک ﺑﺮرﺳﻲ و ﻣﻘﺎﻳﺴﻪ ﺷﺪ. ﻫﻤﭽﻨﻴﻦ اﺛﺮ ﭘﺎراﻣﺘﺮﻫﺎی ﻣﻮاد اوﻟﻴﻪ، ﻧﻤﺮهی ﻧﺦ وﺗﺮاﻛﻢ ﺣﻠﻘﻪﻫﺎ ﻧﻴﺰ ﺑﺮرﺳﻲ ﺷﺪ . ﻧﺘﺎﻳﺞ ﺣﺎﺻﻠﻪ ﻧﺸﺎن دﻫﻨﺪه ﺗﺎﺛﻴﺮ ﻣﻌﻨﻲ ﻋﻮاﻣﻞ ﻣﺬﻛﻮر ﺑﺮ ﺟﺬب ﺻﻮت ﭘﺎرﭼﻪ ﻫﺎی ﺣﻠﻘﻮی ﭘﻮدی اﺳﺖ . ﺑﻄﻮر ﻛﻠﻲ ﭘﺎرﭼﻪﻫﺎی دوروﺳﻴﻠﻨﺪر ﺟﺬب ﺻﻮت ﺑﻴﺸﺘﺮی را ﻧﺴﺒﺖ ﺑﻪ ﭘﺎرﭼﻪ ﻫﺎی ﻳﻜﺮوﺳﻴﻠﻨﺪر از ﺧﻮد ﻧﺸﺎن ﻣﻲ دﻫﻨﺪ . اﺳﺖ ﺑﺮای ﺳﻪ ﺑﻌﺪی ﻛﺮدن ﭘﺎرﭼﻪﻫﺎی ﺣﻠﻘﻮی ﭘﻮدی ﻧﻴﺰ از روش ﺗﺮﻣﻮﻓﻮرﻣﻴﻨﮓ اﺳﺘﻔﺎده ﺷﺪ. ﻧﺘﺎﻳﺞ ﺑﺪﺳﺖ آﻣﺪه ﺑﺮ آن دﻻﻟﺖ دارد ﻛﻪ ﺳﻪ ﺑﻌﺪی ﻛﺮدن ﭘﺎرﭼﻪﻫﺎ در ﻛﻞ ﺳﺒﺐ اﻓﺰاﻳﺶ ﻗﺎﺑﻠﻴﺖ ﺟﺬب ﺻﻮت ﭘﺎرﭼﻪﻫﺎ در ﺗﻤﺎم ﻓﺮﻛﺎﻧﺲﻫﺎ ﻣﻲﺷﻮد .
واژه ﻫﺎی ﻛﻠﻴﺪی: ﭘﺎرﭼﻪ ﻫﺎی ﺣﻠﻘﻮی ﭘﻮدی، ﺿﺮﻳﺐ ﺟﺬب ﺻﻮت، ﻣﺘﻐﻴﺮ ﻫﺎی ﺳﺎﺧﺘﺎری

ادامه مطلب ...
مدیر سایت چهارشنبه 4 اردیبهشت‌ماه سال 1392 ساعت 06:49 ب.ظ
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