پديد آورندگان :
ياري فيروزآبادي زهرا داﻧﺸﮕﺎه ﮔﻨﺒﺪ ﮐﺎووس , وزيري وحيد داﻧﺸﮕﺎه ﮔﻨﺒﺪ ﮐﺎووس - ﮔﺮوه ﻋﻠﻮم و ﺻﻨﺎﯾﻊ ﭼﻮب و ﮐﺎﻏﺬ , كرد بهزاد ﭘﮋوﻫﺸﮕﺎه اﺳﺘﺎﻧﺪارد ﮐﺮج - ﭘﮋوﻫﺸﮑﺪه ﺷﯿﻤﯽ و ﭘﺘﺮوﺷﯿﻤﯽ - گروه ﭘﮋوﻫﺸﯽ ﺳﻠﻮﻟﺰي و ﺑﺴﺘﻪ ﺑﻨﺪي , جمالي راد لعيا داﻧﺸﮕﺎه ﮔﻨﺒﺪ ﮐﺎووس - ﮔﺮوه ﻋﻠﻮم و ﺻﻨﺎﯾﻊ ﭼﻮب و ﮐﺎﻏﺬ
چكيده فارسي :
در اﯾﻦ ﭘﮋوﻫﺶ، اﺛﺮ ﻣﻘﺪار ذرات ﻧﺎﻧﻮﮔﺮاﻓﻦ ﺑﺮ وﯾﮋﮔﯽﻫﺎي ﻣﮑﺎﻧﯿﮑﯽ و ﻓﯿﺰﯾﮑﯽ ﭼﻨﺪﺳﺎزه ﺣﺎﺻﻞ از ﭘﻠﯽاﺗﯿﻠﻦ ﺳﻨﮕﯿﻦ و آرد ﺳﺎﻗﻪ ﮐﻠﺰا ﻣﻮرد ﺑﺮرﺳﯽ ﻗﺮار ﮔﺮﻓﺖ. ﺑﺮاي اﯾﻦ ﻣﻨﻈﻮر، آرد ﺳﺎﻗﻪ ﮐﻠﺰا و ﭘﻠﯽ اﺗﯿﻠﻦ ﺳﻨﮕﯿﻦ ﺑﺎ ﻧﺴﺒﺖ وزﻧﯽ 50 درﺻﺪ، ﺑﻪ ﻫﻤﺮاه ﻣﺎده ﺳﺎزﮔﺎرﮐﻨﻨﺪه )3phc( و ﻧﺎﻧﻮﮔﺮاﻓﻦ )در ﭼﻬﺎر ﺳﻄﺢ 1/5 ،1 ،0/5 ،0 و 2phc( ﺗﻮﺳﻂ دﺳﺘﮕﺎه ﻣﺨﻠﻮط ﮐﻦ داﺧﻠﯽ ﺑﺎ ﯾﮑﺪﯾﮕﺮ ﺗﺮﮐﯿﺐ ﺷﺪه و ﻧﻤﻮﻧﻪ ﻫﺎي آزﻣﻮﻧﯽ ﺗﻮﺳﻂ دﺳﺘﮕﺎه ﻗﺎﻟﺒﮕﯿﺮي ﺗﺰرﯾﻘﯽ ﺳﺎﺧﺘﻪ ﺷﺪ. ﺳﭙﺲ آزﻣﻮنﻫﺎي ﻓﯿﺰﯾﮑﯽ و ﻣﮑﺎﻧﯿﮑﯽ ﺷﺎﻣﻞ ﺟﺬب آب، واﮐﺸﯿﺪﮔﯽ ﺿﺨﺎﻣﺖ، اﺳﺘﺤﮑﺎم ﮐﺸﺸﯽ و ﺧﻤﺸﯽ، و ﻣﻘﺎوﻣﺖ ﺑﻪ ﺿﺮﺑﻪ ﻓﺎﻗﺪار ﺑﺮ روي ﻧﻤﻮﻧﻪﻫﺎ اﻧﺠﺎم ﮔﺮﻓﺖ. ﻫﻤﭽﻨﯿﻦ ﺑﻪ ﻣﻨﻈﻮر ﻣﻄﺎﻟﻌﻪ ﻧﺤﻮه ﭘﺮاﮐﻨﺶ ﻧﺎﻧﻮذرات ﮔﺮاﻓﻦ در ﭼﻨﺪﺳﺎزه از دﺳﺘﮕﺎه ﻣﯿﮑﺮوﺳﮑﻮپ اﻟﮑﺘﺮوﻧﯽ روﺑﺸﯽ ﮔﺴﯿﻞ ﻣﯿﺪان )FE-SEM( اﺳﺘﻔﺎده ﺷﺪ. ﻧﺘﺎﯾﺞ ﻧﺸﺎن داد ﺑﺎ اﻓﺰاﯾﺶ ﻣﻘﺪار ﻧﺎﻧﻮﮔﺮاﻓﻦ ﻣﺪول ﮐﺸﺸﯽ، ﻣﺪول ﺧﻤﺸﯽ، ﻣﻘﺎوﻣﺖ ﮐﺸﺸﯽ و ﻣﻘﺎوﻣﺖ ﺧﻤﺸﯽ ﭼﻨﺪﺳﺎزه اﻓﺰاﯾﺶ ﻣﯽ ﯾﺎﺑﺪ، درﺣﺎﻟﯽﮐﻪ ﻣﻘﺎوﻣﺖ ﺑﻪ ﺿﺮﺑﻪ، ﺟﺬب آب و واﮐﺸﯿﺪﮔﯽ ﺿﺨﺎﻣﺖ ﻧﻤﻮﻧﻪ ﻫﺎ ﮐﺎﻫﺶ ﻣﯽ ﯾﺎﺑﺪ. ﻣﯿﮑﺮوﮔﺮاف ﻫﺎي ﺗﻬﯿﻪ ﺷﺪه ﺗﻮﺳﻂ ﻣﯿﮑﺮوﺳﮑﻮپ اﻟﮑﺘﺮوﻧﯽ روﺑﺸﯽ ﮔﺴﯿﻞ ﻣﯿﺪان )FE-SEM( ﻧﺸﺎن داد ﮐﻪ اﺳﺘﻔﺎده از 1درﺻﺪ ﻧﺎﻧﻮﮔﺮاﻓﻦ ﺳﺒﺐ ﺑﻬﺒﻮد ﭼﺴﺒﻨﺪﮔﯽ ﺑﯿﻦ ﭘﺮﮐﻨﻨﺪه و ﭘﻠﯿﻤﺮ ﺷﺪه اﺳﺖ، و در درﺻﺪﻫﺎي ﺑﺎﻻﺗﺮ، ذرات ﻧﺎﻧﻮﮔﺮاﻓﻦ ﺗﻤﺎﯾﻞ ﺑﻪ ﺗﺠﻤﻊ و ﺗﺸﮑﯿﻞ ﮐﻠﻮﺧﻪ را ﻧﺸﺎن دادﻧﺪ.
چكيده لاتين :
The purpose of this study, was to investigate the effect of graphene nanoparticles (NG) on mechanical properties of composites made from rapeseed stalk flour (RSF) and high density polyethylene (HDPE). To meet this objective, the RSF and HDPE at 50 wt%, coupling agent (3phc) and various amounts of NG (0, 0.5, 1, 1.5 and 2 phc) were mixed via hake internal mixer, and then the specimens were prepared using injection molding. The morphology of samples was characterized using field emission scanning electron microscope (FE-SEM). The physical and mechanical characterization including water absorption, thickness swelling, tensile, flexural strength, and unhocked impact resistance were performed. In addition, the field emission scanning electron microscope (FE-SEM) was used to study the distribution of graphene nanoparticles in the composite. The results showed that by increasing the amount of nanographene the tensile modulus, flexural modulus, tensile strength, and flexural strength of the composite were increased while the impact strength, water absorption and thickness swelling of the samples decreased.FE-SEM micrographs showed that the using of 1 wt% NG improved the adhesion between the filler and the polymer matrix. However, in the higher amount contents (>1%), nanographene particles tend to accumulate.
