تهيه و مشخصه يابي كامپوزيت بر پايه نايلون 6 و پلي اتيلن گرافت شده با مالئيك انيدريد حاوي نانورس

چكيده انگليسي :

59 Preparation and Characterization of Composite based on Nylon 6 and Polyethylen Grafted with Maleic Anhydride Reinforced with Nanoclay Ahmadreza Rohollahi a rohollahi@ec iut ac ir Date of Submission December 9 2012 Department of Chemical Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor Saied Nouri Khorasani saied@cc iut ac ir Abstract The aim of this reaserch is to prepare composite samples of nylon 6 nanoclay alloy samples of nylon 6 polyethylene grafted with maleic anhydride and a hybride of above as a substitute for nylon 12 Nylon 6 is an engineering plastic and in this research the aim is to change its mechanichal properties and gasoline permeation resistance that can be used instead of nylon 12 For this aim first two types of compound include composite samples of nylon 6 nanoclay and alloy samples of nylon 6 polyethylene grafted with maleic anhydride PE g MA prepared with melt method For evalution of properties of samples three type tests were carried out Once type of test were include X Ray diffraction analysis XRD and Thermogravimetry analysis TGA on samples of composite were carried out Second type Scanning Electron Microscope SEM and FTIR analysis were carried out alloy on samples Tertiary type gasoline permeation tensile strength elastic modulus strain to failure and impact strength carried out on two type samples Cloisite 30B was used in composite samples In nylon 6 nanoclay composites was used with weight percents of 1 3 and 5 TGA analysis show that real amount of nanoclay in composite for samples with 1 3 and 5 weight percent was 0 95 2 86 and 4 75 respectively XRD analysis shows that peak available in cloisite 30B in 2 4 8 did not appeare in samples with 3 and 5 weight percents Results show that nanoclay exfoliated in nylon 6 Also the alloys of nylon 6 PE g MA were prepared with weight percents of 10 20 and 30 of PE g MA FTIR results show that there was interaction between maleic anhydride group in PE g MA and amide group in nylon 6 SEM photomicrographs show that separated phase in alloy samples not seen Results of gasoline permeation show that the lowest gasoline permeation occurred when using 3 wt of nanoclay 0 46 gr m2 day in composites and 10 wt of PE g MA in alloys 0 46 gr m2 day Moreover the tensile test results showed that with increasing the amount of nanoclay from 1 to 5 wt in composites the elastic modulus increased by 18 to 45 and tensile strength increased by 12 to 47 with respect to neat nylon 6 While in alloys with increasing the amount of PE g MA from 10 to 30 wt the elastic modulus decreased by 7 to 31 and tensile strength decreased by 14 to 42 compared to neat PA6 Also the results of impact test showed that the impact strength of composites increased with increasing the amount of nanoclay decreased and impact strength alloys increased with increasing the amount of nanoclay and PE g MA Finally sample with 3 nanoclay and 10 PE g MA prepared and mechanical properties and permeation resistance were investigated The result of permeation test shows that this sample had lowest amount of permeation when compared with composits and alloy samples 0 41gr m2 day Tensile test results for composite alloy sample showed that the elastic modulus increased 9 tensile strength decreased to 10 and impact strength increased to 97 respect to neat nylon 6 Keywords nylon 6 composite alloy gasoline permeation mechanical properties

روح الهي، احمدرضا

تهيه و مشخصه يابي كامپوزيت بر پايه نايلون 6 و پلي اتيلن گرافت شده با مالئيك انيدريد حاوي نانورس

نفوذ , بنزين , آلياژ , كامپوزيت - آلياژ , خواص فيزيكي- مكانيكي