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  本文選題：分子篩　切入點(diǎn)：吸附效率　出處：《蘇州大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：在通常的涉氚環(huán)境中,氚很大一部分是以氚化水氣體的形式存在于場所周圍的空氣中,因此本論文旨在利用分子篩和利用輻照法制備的多孔高分子水凝膠對水分子的特異性吸附的特點(diǎn),希望通過研究分子篩和多孔高分子水凝膠對氚化水氣體的吸附性能,最終將分子篩和多孔高分子水凝膠簡單且有效地應(yīng)用于實(shí)際涉氚環(huán)境中。論文根據(jù)分子篩的特點(diǎn),將具有特定露點(diǎn)、氚濃度的含氚氮?dú)庖砸欢ǖ乃俣韧ㄟ^分子篩,并連續(xù)測量氣體通過分子篩前后氚濃度的變化和分子篩穿透前后的質(zhì)量變化,從而確定分子篩在現(xiàn)場實(shí)際環(huán)境中的防氚效果。實(shí)驗(yàn)結(jié)果表明,不含水的分子篩對氚化水的吸附效果是最優(yōu)異的,在4個(gè)小時(shí)之內(nèi)它對氚化水氣體的過濾效率可以維持在95%以上,吸附效率高,有效使用時(shí)間長;1/3吸水的分子篩對氚化水氣體的吸附效率較好,3個(gè)小時(shí)之內(nèi)過濾效率保持在90%以上。綜合考慮吸附效率使用的舒適性,1/3吸水的分子篩是現(xiàn)場實(shí)際環(huán)境的最佳個(gè)體氚防護(hù)方案。同時(shí),論文將碳納米管加入丙烯酰胺、丙烯酸和水的混合溶液中,通過Co 60源的照射,得到了碳納米管接枝的高分子水凝膠。通過儀器檢測表征可知,該高分子水凝膠具有多孔結(jié)構(gòu)。高分子水凝膠的吸水率隨著丙烯酰胺用量的增加而增大;高分子水凝膠的吸水率會隨著丙烯酸用量的增加而降低;在碳納米管分散溶液體積為5ml之前,高分子水凝膠的吸水率隨著碳納米管分散溶液體積的增加而降低;在碳納米管分散溶液體積達(dá)到5ml之后,高分子水凝膠的吸水率基本保持不變;高分子水凝膠的吸水率會隨著劑量的增加而不斷降低。
[Abstract]:In the usual tritiated environment, much of the tritium is present in the air around the site in the form of tritiated water gas. Therefore, the purpose of this thesis is to make use of the characteristics of molecular sieves and porous polymer hydrogels prepared by irradiation method to adsorb water molecules, and hope to study the adsorption properties of molecular sieve and porous polymer hydrogels for tritiated water gases by means of molecular sieve and porous polymer hydrogels. Finally, the molecular sieve and porous polymer hydrogels are simply and effectively applied to the tritium environment. According to the characteristics of the molecular sieve, the tritiated nitrogen with specific dew point and tritium concentration will pass through the molecular sieve at a certain speed. The tritium concentration changes before and after the gas passing through the molecular sieve and the mass change before and after the molecular sieve penetration are continuously measured to determine the tritium prevention effect of the molecular sieve in the field environment. The adsorption efficiency of non-aqueous molecular sieve on tritiated water is the best. In 4 hours, the filtration efficiency of tritiated water gas can be maintained at more than 95%, and the adsorption efficiency is high. The adsorption efficiency of tritiated water gas was better when the molecular sieve absorbed water for a long time, and the filtration efficiency remained above 90% within 3 hours. The comfortableness / 3 / 3 water absorption of the zeolite considering the adsorption efficiency was the actual situation in the field. The best individual tritium protection scheme for the environment. At the same time, In this paper, carbon nanotubes were added into the mixed solution of acrylamide, acrylic acid and water, and the polymer hydrogels grafted with carbon nanotubes were obtained by the irradiation of Co 60 source. The water absorption of the polymer hydrogel increases with the increase of the amount of acrylamide, and decreases with the increase of the amount of acrylic acid. When the volume of carbon nanotube dispersion solution is 5ml, the water absorption of polymer hydrogel decreases with the increase of carbon nanotube dispersion solution volume, and when the carbon nanotube dispersion solution volume reaches 5ml, the water absorption of polymer hydrogel decreases with the increase of carbon nanotube dispersion solution volume. The water absorbency of polymer hydrogels remains basically unchanged, and the water absorption of polymer hydrogels decreases with the increase of dosage.
【學(xué)位授予單位】：蘇州大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TQ122.1

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本文編號：1615367