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بررسی اثر نانو ژل ولاستونیت بر روی خواص کاربردی چوب سیمان ساخته شده از الیاف کاه برنج | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| مقاله 13، دوره 33، شماره 3 - شماره پیاپی 64، آذر 1397، صفحه 453-465 اصل مقاله (506.92 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijwpr.2018.120242.1454 | ||
| نویسندگان | ||
| علی حسن پور تیچی* 1؛ بهزاد بازیار2 | ||
| 1استادیار، گروه علوم و صنایع چوب و کاغذ، دانشکده شهید هاشمینژاد، دانشگاه فنی و حرفهای استان مازندران، ایران | ||
| 2استادیار، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات ، گروه صنایع چوب و کاغذ.، تهران، ایران | ||
| چکیده | ||
| DOR:98.1000/1735-0913.1397.33.453.64.3.1576.1580 در این مطالعه اثر نانو ژل ولاستونیت در سه سطح (0، 5 و 10 درصد وزنی سیمان) و نسبت اختلاط ماده لیگنو سلولزی به سیمان در سه سطح 10 به 90، 20 به80 و 30 به 70 بر خواص ریزساختاری، مکانیکی، فیزیکی و بیولوژیکی چند سازه ساخته شده از کاه برنج مورد بررسی قرار گرفته است. به این ترتیب با احتساب 9 تیمار، در مجموع 27 تخته آزمایشگاهی ساخته شد. خواص مکانیکی و فیزیکی نمونهها مطابق استاندارد 634-DIN-EN شامل مقاومت خمشی، مدول الاستیسیته، چسبندگی داخلی، جذب آب پس از 2 و 24 ساعت غوطهوری در آب، دانسیته و مقاومت به قارچ اندازهگیری شدند. تصاویر میکروسکوپی SEM جهت بررسی خواص ریز ساختاری چندسازه از نمونهها تهیه شد. نتایج نشان داد با افزایش نانو ژل ولاستونیت در تختهها مقاومت خمشی ، مدول الستیسیته ، چسبندگی داخلی و دانسیته بهطور معنیداری افزایش یافت. همچنین با افزایش نانو ژل ولاستونیت، ثبات ابعادی تختهها و مقاومت به قارچ در مقایسه با نمونه بدونه نانو افزایش یافت. نتایج میکروسکوپ الکترونی پویشی نیز نشان داد که هیدروکسید کلسیم پس از افزودن نانو ژل ولاستونیت باعث تشکیل ژل کلسیم سیلیکات هیدراته شدهاند. | ||
| کلیدواژهها | ||
| سیمان؛ کاه برنج؛ دانسیته؛ نانو ژل ولاستونیت | ||
| عنوان مقاله [English] | ||
| Investigation on effect of nano gel wollastonite on properties usage of wood-cement composites manufactured from rice straw fibers | ||
| نویسندگان [English] | ||
| Ali Hasanpoor tichi1؛ Behzad Baziyar2 | ||
| 1Assistant Prof, Dep. of Wood Science and Engineering, Technical Faculty of No. 2, Mazandaran Branch, Technical and Vocational University (TVU), Sari, Iran | ||
| 2Dept. of Wood and Paper Science and Technology, Islamic Azad University(IAU), Tehran, Iran | ||
| چکیده [English] | ||
| In this study the effect of nano gel wollastonite usage in three level (0 , 5 and 10 percent per dry by weight of the cement) and the mixture ratios of lingocellulosic material to cement in three level 10:90, 20:80 and 30:70 on physical, mechanical , microscopic and biological properties of composite made from rice straw fibers- cement was investigated. Three replicates for each treatment and 27 experimental boards were manufactured. Specimens were prepared according to DIN- EN634 standard test methods to measure mechanical and physical properties. Mechanical and physical properties including static bending strength, modulus of elasticity, interior bonding(IB),water absorption after 2 and 24 hours immersion in the water , density and decay resistant (loss weight) were measured. Micro- structural properties of composites were evaluated by SEM images. The results showed that, bending strength , modulus of elasticity , interior bonding and density were significantly increased with increasing Nano gel wollastonite . Also, with increasing Nano gel wollastonite , dimensional stability and decay resistance were increased in comparison with the control sample. Results of scanning electron microscopy showed that the calcium hydroxide formed hydrated calcium silicate gel (C-S-H gel) after addition the Nano gel wollastonite . SEM images showed that the micro- structure of the boards were improved by increasing the nano- wollastonite content. | ||
| کلیدواژهها [English] | ||
| Cement, Rice straw, Density, Nano gel wollastonite | ||
| مراجع | ||
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