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تاثیر نانو ولاستونیت بر مقاومت به آتش و چسبندگی پوشش آکریلیک پایه آب در سطح چوب | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| مقاله 2، دوره 33، شماره 2 - شماره پیاپی 63، تیر 1397، صفحه 166-178 اصل مقاله (271.15 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijwpr.2018.114552.1429 | ||
| نویسندگان | ||
| حسین رنگ آور* 1؛ سعید خجسته خسرو2؛ مسعود تقی پور جاوی3 | ||
| 1دانشیار گروه صنایع چوب دانشگاه شهید رجایی | ||
| 2گروه علوم و صنایع چوب و کاغذ، دانشکده منابع طبیعی، دانشگاه تربیت مدرس، نور، مازندران | ||
| 3گروه صنایع چوب، دانشکده مهندسی عمران، دانشگاه تربیت دبیر شهید رجایی، | ||
| چکیده | ||
| در مطالعه حاضر اثر افزودن نانو ذرات ولاستونیت (casio3) به پوشش آکریلیک پایه آب بر قابلیت مقاومت به آتش و مقاومت چسبندگی پوشش مورد مطالعه قرار گرفت. نانو ولاستونیت با غلظت‌های 5/0، 5/1 و 5/2 درصد وزنی نسبت به جرم خشک پوشش آکریلیک با آن مخلوط شد. برای تثبیت نانو ذرات در بستر پوشش از دستگاه اولتراسونیک استفاده گردید. فرایند پوشش دهی نمونه‌ها با و بدون کاربرد نانو ولاستونیت در پوشش آکریلیک روی نمونه‌های چنار و نوئل صورت پذیرفت و ویژگیهای آنها شامل مقاومت به آتش و مقاومت چسبندگی مورد بررسی قرار گرفتند. نتایج نشان داد که افزودن نانو ولاستونیت تا 5/2 درصد به پوشش آکریلیک، اثر بسیار قابل توجهی بر بهبود مقاومت به آتش نمونه‌ها بخصوص تاخیراندازی زمان شعله‌وری گونه‌های نوئل و چنار با بهبود 258 و 184 درصدی نسبت به نمونه‌های شاهد داشته است. از طرف دیگر بررسی چسبندگی پوشش آکریلیک به سطح نمونه‌های چوبی حاکی از بهبود این ویژگی پوشش با افزودن نانو ولاستونیت بود. در مورد چسبندگی پوشش نیز بالاترین میزان این ویژگی در نانو پوشش حاوی بیشترین میزان نانو ذرات ولاستونیت مشاهده گردید. البته لازم به ذکر است که عملکرد نانو پوشش‌های حاوی 5/1 درصد نانو روی ویژگیهای مورد بررسی نیز در حد قابل قبولی بود. | ||
| کلیدواژه‌ها | ||
| نانو ولاستونیت؛ پوشش چوب؛ چنار و نوئل؛ تاخیر انداز آتش؛ مقاومت چسبندگی | ||
| عنوان مقاله [English] | ||
| The effect of nano wollastonite on the fire resistance and the adhesion properties of water based acrylic coating in wood surface | ||
| نویسندگان [English] | ||
| Saeed Khojasteh Khosro2؛ Masoud Taghipour Javy3؛ | ||
| 2Department of Wood and Paper Science and Technology, Faculty of Natural Resources, Tarbiat Modares University, Noor | ||
| 3Wood Science and Technology Department, Faculty of Civil Engineering, Shahid Rajaee Teacher Training University | ||
| چکیده [English] | ||
| The main objective of the current study was the investigation of the effect of adding the wollastonite nanoparticles (casio3) to the water based acrylic coating onto the fire resistance capability and adhesion strength of coating. The nano wollastonites with the concentrations of 0.5, 1.50, and 2.5 wt% were dispersed into the coating. Ultrasonic device was used to stabilize the nanoparticles into the substrates. The coating process was carried out with and without application of the nanoparticles on the surfaces of spruce and sycamore samples and their properties comprising the fire resistance and the adhesion strength were investigated. The obtained results showed that adding of nano wollastonite to the acrylic coating with the waight percent of 2.5% (w/w) had the significance effect onto the resistance of the samples to fire. In particluar, these effects was observed in cas of the retard time of ignition of the spruce and sycamore samples with the improvement values of 258 and 184 % compared with the control samples, respectively. Furthermore, the investigation of adhesion properties of coatings to the sample surface indicated that the applied nano wollastonites improved these properties of coatings. In case of the adhesion properties, however, the highest value of this properties was observed in the highest content of wollastonite nanoparticles. It should be noted that the performance of nanocomposite coating containing of the 1.5 wt% of nano onto investigated properties was also acceptable. | ||
| کلیدواژه‌ها [English] | ||
| Nano wollastonite, Wood coating, Spruce and sycamore, Fire retardant, Adhesion strength | ||
| مراجع | ||
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