英语口语省公开课金奖全国赛课一等奖微课获奖PPT课件.pptx

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,2018/6/30,#,Respondent：,WANG Xinfu,I,nstructor：,XU Yuxin,/05/29,Study on the Improvement of Starch Series Body,Reinforcing Agent and Its Related Mechanism,1/16,2/16,Research background and significance,1,R,esearch,C,ontent,2,Conclusions,3,Report Outline,3/16T,he development of environmentally friendly ceramic products with high added value and high technology is the development direction of the ceramic industry in the future,.,B,ackground,W,ith the large-scale industrialization and mechanization of ceramic production,the raw ore sludge will also be consumed in large quantities,and high-quality ore sludge will soon be ex,hausted,.,R,esource conservation,Environmental protection,4/16,C,eramic body extract enhancer:As long as the material can be used to increase the strength of the body,it can be called enhancer.It is characterized by enhancing the strength of the ceramic body based on its effect on the fluidity and rheology of the slurry.,CMC,Polyvinyl alcohol,The main body enhancer classification,Lignin,Humic acid sodium,Body Enhancer Overview,Modified starch,5/16,Starch series body enhancer,A,dvantage,The source of raw materials is convenient,mainly starch,and the cost is low;,The ceramic body has a better reinforcing effect.,Disa,dvantage,Compared with foreign high-performance ceramic blank reinforcements,the enhancement effect needs to be improved;,After being stored for a period of time,it is easy to regenerate(the phenomenon of viscosity reduction),which is not conducive to the preservation of the body.,6/16,Solution,Sodium acrylate has a good thickening effect on starch.The,V,ander Waals force between the composition and the starch polymer causes the starch particles to bind with each other,and at the same time,it also promotes the hydrogen bond between the starch molecules to enhance the viscosity of the starch.,7/16,Experimental flowchart,Sodium polyacrylate,Wet billet,Dry billet,Acrylic,Sodium hydroxide,Sodium persulfate,4-methoxyphenol,Analysis of dry,and wet billets,Contrast analysis,with blank,Industrial production,applications,Three days later,test return,Viscosity evaluation,Analysis of sodium,polyacrylate for further,evaluation,Not easy to return,Increased,viscosity,Evaluation of folding resistance of,bricks made by different,methods,Single factor test,orthogonal test,8/16,The influence of different factors,The effect of different monomer concentration on viscosity,The effect of different reaction temperatures on viscosity,From the figure above,it can be seen that as the monomer concentration increases,the measured viscosity of the prepared polymer also increases.,From the figure below,the best reaction temperature is around 60,.,9/16,The influence of different factors,The effect of different reaction times on viscosity,From the figure,it can be concluded that as the reaction time prolongs,the viscosity of the prepared sodium polyacrylate increases,and the relative molecular mass of the polymer sharply increases,but the viscosity growth trend becomes slower over 2 hours.,10/16,Rebirth test,Rebirth test,As can be seen from the figure,when TY-2 was tested alone,it was easy to regenerate.After three days,the viscosity was 1.33 mPa/S,which was a decrease of 25.70%.The viscosity of the improved enhancer increased with time,and,t,he average viscosity is 19.17%.,编号,第一次测试粘,度,/,（,mPa/S),三天后,测,试粘度,/,（,mPa/S,提升率/%,平均提升/%,0,（,单独,TY-2,测试,）,1.79,1.33,-25.70,1,3.18,3.92,23.27,19.17,2,4.16,5.02,20.67,3,5.05,6.12,21.19,4,4.42,5.35,21.04,5,6.77,7.83,15.66,6,4.12,4.96,20.39,7,5.51,6.1,0,10.71,8,4.98,5.11,6.57,9,8,.00,10.64,33,.00,11/16,Orthogonal test analysis,编号,试验号,原因,粘度,/,（,mPa/S),与,TY-2,结合测试粘度,/,（,mPa/S),丙烯酸浓度,A,（,%,）,反应温度,B,（,）,反应时间,C,（,h,）,列号,1,2,3,1,A1B1C1,1,1,1,2.18,3.18,2,A1B2C3,1,2,3,2.49,4.16,3,A1B3C2,1,3,2,4.50,5.05,4,A2B1C3,2,1,3,3.93,4.42,5,A2B2C2,2,2,2,5.65,6.77,6,A2B3C1,2,3,12.68,4.12,7,A3B1C2,3,1,2,4.27,5.51,8,A3B2C1,3,2,1,4.38,4.98,9,A3B3C3,3,3,3,7.50,8.00,TY-2,单独测试粘度,1.79mPa/S,Through orthogonal experimental analysis,sodium polyacrylate with the best viscosity was obtained,and it was doped into TY-2,followed by analysis of the optimal conditions of synthesis.When the 30%concentration of acrylic acid reacted at 60,c,elsius,degrees for 1.8 hours,the synthesized sodium polyacrylate had the best effect.,12/16,Evaluation of reinforcements for making blanks,Evaluation of green body enhancer,From the data in the table,it can be concluded that sodium polyacrylate has a great improvement on TY-2,enhancer enhancer effect is significantly improved,the best group and the blank group increased by an average of 65.92%,.,This group has an average increase of 20.78%over the group that only added TY-2.From the comparison of these two data,it is feasible to add sodium polyacrylate to improve starch series blank body enhancer.,13/16,Achievements,14/16,When the concentration of acrylic acid is 30%,the reaction temperature is 60C,and the reaction time is 1.8h,the sodium polyacrylate prepared by polymerization has the best effect.When the doping amount is 20%to 30%of the reinforcing agent,the average green body strength increases by 12.92%to 21.08%(compared with the addition of TY-2 only),The defect of TY-2 starch green body enhancer was improved.After adding sodium polyacrylate,the improved green body enhancer was tested for rejuvenation,and the viscosity increased by an average of 19.17%.,Raw material sodium acrylate(3wt%of reinforcing agent)and initiator were mixed into blanks for evaluation.The average strength of the blank reinforcement was improved by 30%before improvement.,C,onclusion,s,15/16,Thanks!,16/16,