本文選題：寒天　切入點：磷酸鹽　出處：《大連醫(yī)科大學(xué)》2014年碩士論文

【摘要】：目的:通過對比實驗探究微波法、寒天機(jī)法和水浴法這三種不同的方法在加熱寒天時,向每次使用后的寒天中添加一定量的新寒天和水至初始重量后反復(fù)加熱使用,觀察其對磷酸鹽耐火材料模型膨脹性的影響及三種加熱方法之間的差異。驗證在使用后的寒天中加入一定量的新寒天和水來延長其使用時間的可行性。從而找到既能減少成本又能有效保障修復(fù)體制作質(zhì)量的方法,為加工廠合理利用舊寒天提供理論依據(jù)。方法:實驗組選擇6個10ml標(biāo)準(zhǔn)玻璃注射器內(nèi)芯分成A、B、C三組,每組2個注射器內(nèi)芯。將三組注射器內(nèi)芯分別等距垂直置于三個塑料型盒中,注射器內(nèi)芯頭部與型盒底部保持接觸,固定內(nèi)芯,形成磷酸鹽樣品標(biāo)準(zhǔn)模具。取三組等量的新寒天分別用微波法、寒天機(jī)和水浴法三種方法加熱熔化后,灌入三個型盒中,使三組注射器內(nèi)芯垂直向下埋入,待寒天冷卻凝固形成寒天印模后脫模。按廠家提供的水粉比調(diào)和磷酸鹽耐火材料并灌入寒天印模中,待磷酸鹽耐火材料凝固1小時后取出。將所得磷酸鹽耐火材料樣本分別放入石膏測量模具中,并用千分尺進(jìn)行磷酸鹽耐火材料樣本直徑的測量。寒天第一次加熱獲得磷酸鹽耐火材料樣本后,收集剩余寒天并稱重,得到寒天的失水重量,將新寒天和水按重量之比1:8混合加入第一次加熱后的剩余寒天中,使之恢復(fù)初始重量,并進(jìn)行第二次加熱和灌注磷酸鹽耐火材料模型。每次灌注磷酸鹽耐火材料模型后均按照上述方法向剩余寒天中加入新寒天和水的混合物使之恢復(fù)初始重量,再進(jìn)行下一次的加熱和磷酸鹽耐火材料模型的灌注。實驗重復(fù)20次。對比每個加熱組中20次磷酸鹽耐火材料樣本的凝固和吸水膨脹以及三種加熱組之間磷酸鹽耐火材料樣本的凝固和吸水膨脹,用SPSS19.0軟件對所測量的結(jié)果進(jìn)行方差分析和線性回歸分析。對照組使用和實驗組同等重量的寒天分別進(jìn)行微波法、寒天機(jī)法,水浴法加熱。在灌注寒天印模、形成磷酸鹽耐火材料樣本后,收集剩余寒天直接進(jìn)行第二次加熱。實驗反復(fù)進(jìn)行20次,每個加熱組均獲得20組磷酸鹽耐火材料樣本。結(jié)果:實驗組中,微波法、寒天機(jī)法、水浴法得到的磷酸鹽耐火材料樣本膨脹率回歸曲線的斜率分別為-0.000235、-0.000237、-0.000209。對照組得到的磷酸鹽耐火材料樣本膨脹率回歸曲線的斜率分別為-0.000689、-0.000502、-0.000494。同時,實驗組中三種加熱方法所得磷酸鹽耐火材料樣本膨脹率P0.05,無統(tǒng)計學(xué)差異。對此結(jié)果進(jìn)一步進(jìn)行S-N-K兩兩比較后,結(jié)果表明,三種加熱方法之間所得的磷酸鹽耐火材料樣本膨脹率均無統(tǒng)計學(xué)差異。結(jié)論:通過反復(fù)向加熱后的寒天中加入一定量的新寒天和水后,可以延長寒天的使用次數(shù),且微波法、寒天熔化機(jī)法和水浴法加熱所得磷酸鹽耐火材料樣本膨脹率之間無明顯差異。
[Abstract]:Objective: to explore three different methods, microwave method, cold sky machine method and water bath method, to add a certain amount of new cold days and water to the initial weight to heat the cold days after each use. The effects on the expansibility of phosphate refractories model and the differences between the three heating methods were observed. The feasibility of adding a certain amount of new cold days and water to prolong the use time of phosphate refractories was verified. Methods that can both reduce costs and effectively guarantee the quality of the repair system, Methods: six 10ml standard glass syringe cores were divided into three groups. Each group of 2 injector cores. Three groups of syringe inner core is placed in three plastic box, the inner core head of the syringe keeps in contact with the bottom of the mould box, fixed the inner core, Three equal groups of new cold days were heated and melted by microwave method, cold weather machine and water bath method, then poured into the three type boxes, so that the inner core of the three groups of syringes was buried vertically down. When the cold days are cooled and solidified to form the cold days impression, the mold is released. According to the water powder ratio provided by the manufacturer, the phosphate refractories are mixed and poured into the cold days impression. Take out phosphate refractories after solidification for 1 hour. Put the samples of phosphate refractories in gypsum measuring mould, The diameter of phosphate refractories was measured with micrometers. After the first heating of phosphate refractories, the residual cold days were collected and weighed, and the lost water weight of cold days was obtained. Add the new cold days and water to the remaining cold days after the first heating at 1:8 to restore the initial weight. After the second heating and pouring of phosphate refractory model, the mixture of new cold days and water was added to the remaining cold days in accordance with the above method to restore the initial weight. Next heating and perfusion of phosphate refractories model. Experiment repeated 20 times. Comparison of solidification and water absorption expansion of 20 phosphate refractories samples per heating group and phosphate resistance between the three heating groups. Solidification and water absorption expansion of fire material samples, SPSS19.0 software was used to analyze the variance and linear regression analysis of the measured results. The control group and the experimental group were treated with microwave method, cold weather machine method, water bath method, respectively. After the phosphate refractory samples were formed, the residual cold days were collected and directly heated for the second time. The experiment was carried out repeatedly for 20 times, and 20 groups of phosphate refractories were obtained in each heating group. Results: in the experimental group, microwave method, cold weather method, The slope of expansion regression curve of phosphate refractories obtained by water bath method is -0.000235- 0.000237- 0.000209.The slope of the regression curve of the sample expansion rate of phosphate refractories obtained from the control group is -0.000689- 0.000502- 0.000494. at the same time, the slope of the regression curve is -0.000235- 0.000237- 0.000209.The slope of the regression curve is -0.000689- 0.000502ng-0.000494. The expansion rate of phosphate refractories obtained by three heating methods in the experimental group was not significantly different (P 0.05). After further comparison of the results with S-N-K, the results showed that, The expansion rate of phosphate refractories obtained from the three heating methods has no statistical difference. Conclusion: by adding a certain amount of new cold days and water to the cold days after heating repeatedly, the number of times of use of cold days can be prolonged, and the microwave method can be used. There was no significant difference between the expansion rate of phosphate refractories heated by cold melting machine method and water bath method.
【學(xué)位授予單位】：大連醫(yī)科大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：R783.1

【相似文獻(xiàn)】

相關(guān)期刊論文 前1條

1 鄭惠玲;;糖化血紅蛋白A_1c測定在普通實驗室的應(yīng)用[J];川北醫(yī)學(xué)院學(xué)報;1991年04期

相關(guān)會議論文 前5條

1 張莉;王聰;陳仁喜;袁建;;水浴法制備鈀納米顆粒及其修飾電極的電催化性能[A];中國化學(xué)會第28屆學(xué)術(shù)年會第4分會場摘要集[C];2012年

2 盛夏;汪雷;崔方明;姜婷婷;楊德仁;;添加劑對化學(xué)水浴法制備In_2S_3薄膜表面形貌的影響[A];第十屆中國太陽能光伏會議論文集：迎接光伏發(fā)電新時代[C];2008年

3 杝建智;傅彥培;林正雄;;化學(xué)水浴法制備太陽能電池緩沖層硫化鋅薄膜與性質(zhì)研究[A];中國顆粒學(xué)會超微顆粒專委會2011年年會暨第七屆海峽兩岸超微顆粒學(xué)術(shù)研討會論文集[C];2011年

4 湯會香;嚴(yán)密;張輝;馬向陽;楊德仁;;化學(xué)水浴法制備CuInS_2薄膜的研究[A];21世紀(jì)太陽能新技術(shù)——2003年中國太陽能學(xué)會學(xué)術(shù)年會論文集[C];2003年

5 李軍;李建民;;溫泉水浴法治療缺血性股骨頭壞死20例[A];第四屆全國中西醫(yī)結(jié)合風(fēng)濕類疾病學(xué)術(shù)會議論文匯編[C];2000年

相關(guān)碩士學(xué)位論文 前2條

1 歐玉峰;化學(xué)水浴法制備硫化鋅薄膜與性能研究[D];西南交通大學(xué);2015年

2 吳建宏;寒天中加入添加劑后對磷酸鹽耐火材料膨脹性影響的比較研究[D];大連醫(yī)科大學(xué);2014年

，

本文編號：1656567