Soleimani Sardo, S. (2022) Investigation of the effect of nanographene particles on the physical, mechanical and morphological properties of cement wood produced from date palm cis. Masters thesis, university of zabol.
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Investigation of the effect of nanographene particles on the physical, mechanical and morphological properties of cement wood produced from date palm cis.pdf Download (126kB) | Preview |
Abstract
Due to its favorable functional properties, wood-cement composite is among the most important environmentally friendly construction products today. However, in the production process of wood-cement compact plates, the lack of optimal compatibility between cellulose fibers and cement causes disturbance in the hydration of cement.This disorder leads to the creation of weak mineral connection and as a result, adverse effects on the physical and mechanical properties of composites. This research was conducted with the aim of investigating the effect of different amounts of nanographene particles on the mechanical, physical and morphological properties of composites obtained from date palm cis and type 2 portland cement. For this purpose, date palm chips as lignocellulosic material and cement as mineral binder respectively with a ratio of 1 to 3 along with nano graphene reinforcement in 4 levels (0, 0.1, 0.3, 0.5 ) percentage relative to the dry weight of cement were combined. Cis and cement cake is formed in a wooden mold with dimensions of 360 x 360 mm and by press in constant conditions, with a temperature of 20 degrees Celsius and a pressure of 40 kg/cm2 for 5 minutes to a thickness of 15 mm. The meter was compressed. The resulting boards were sealed for 20 hours and then placed in an air-conditioned room with a temperature of 20±2 degrees Celsius and a humidity of 60±2% for 28 days.The physical properties, including water absorption and thickness shrinkage of the samples after 2 and 24 hours, were evaluated according to the EN317 standard, and the mechanical properties, such as bending strength and internal adhesion, were evaluated according to the EN310 and EN319 standards, respectively. Also, in order to check the morphological properties, scanning electron microscope (SEM) images were prepared from the samples. The results showed that with the increase of nanographene particles, the bending strength and internal adhesion increase significantly, also, with the increase of nanographene, the water absorption and thickness shrinkage decreases in 2 and 24 hours, and the lowest water absorption and thickness shrinkage after 2 and 24 hours of immersion in water were related to the samples made with 0.5% nanographene. The results of the SEM images prepared from different treatments showed that by increasing the nanographene particles from zero to 0.5% compared to the dry weight of the cement, it created strong network connections and better adhesion between the Cis particles and the cement. Entering the empty spaces between the shards and cement causes filling of pores and cracks.
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | composite product, nanographene, cement wood, date palm cis |
| Subjects: | T Technology > TS Manufactures |
| Depositing User: | Mrs najmeh khajeh |
| Date Deposited: | 25 Nov 2023 06:44 |
| Last Modified: | 25 Nov 2023 06:44 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/3440 |
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