本文選題：原子力顯微鏡 + 炭黑聚集體　； 參考：《四川理工學院》2015年碩士論文

【摘要】：高結(jié)構(gòu)炭黑由于其結(jié)構(gòu)的復雜性與表面的活性位點,使其在補強性能上比普通炭黑有更優(yōu)異的性能。本論文對高結(jié)構(gòu)炭黑表面結(jié)構(gòu)及活性位點開展研究工作,以達到深入認識炭黑補強機理及提高和改善炭黑的補強性能的目的,促進炭黑在“綠色輪胎”上的開發(fā)與應用。(1)本文采用原子力顯微鏡DFM模式對高結(jié)構(gòu)炭黑和普通炭黑進行了形貌結(jié)構(gòu)表征和相圖分析。結(jié)果表明:高結(jié)構(gòu)炭黑結(jié)構(gòu)更為復雜,呈交聯(lián)網(wǎng)狀結(jié)構(gòu)及葡萄串狀結(jié)構(gòu),尤其是CRX2125、CRX1380及DZ13具有孔洞結(jié)構(gòu),CRX1380還具有片層狀結(jié)構(gòu),這些獨特的形貌結(jié)構(gòu)是首次被掃描出來;而普通炭黑N660呈球形和橢球形狀。DFM相圖反映了炭黑聚集體邊緣處的結(jié)構(gòu),是形貌圖的一個重要補充。結(jié)果表明:炭黑聚集體邊緣處的顏色較聚集體中間部分更為明亮,顯示出各類炭黑聚集體邊緣處呈一定的粘彈性,偏軟。(2)采用原子力顯微鏡DFM模式對經(jīng)不同溫度和氧氣處理的炭黑聚集體表面做力曲線,做大量統(tǒng)計并分析。結(jié)果表明:在常溫常壓下,高結(jié)構(gòu)炭黑CRX1380、CRX2125、N234表現(xiàn)出了很小的活性,而炭黑DZ13、N115和普通炭黑沒有表現(xiàn)出活性;經(jīng)過高溫有氧處理后,炭黑表現(xiàn)出活性,且活性點的幾率大幅度提高;在超高溫真空下處理后的炭黑,只有高結(jié)構(gòu)炭黑CRX1380、CRX2125、DZ13表現(xiàn)出活性。(3)元素分析表明炭黑經(jīng)高溫有氧處理后,炭黑聚集體表面百分含氧量顯著增加,由DFM力曲線統(tǒng)計結(jié)果可知,炭黑聚集體含氧量增加,其表面活性點出現(xiàn)的幾率也增加。經(jīng)1350℃處理后的炭黑聚集體表面含氧量急劇下降,高結(jié)構(gòu)炭黑N234、N115和普通炭黑N660的力曲線沒有發(fā)生變化,即探針針尖沒有探測到活性點,而在高結(jié)構(gòu)炭黑CRX2125、CRX1380、DZ13表面上探測到了活性點。高結(jié)構(gòu)炭黑表面活性點主要由炭黑表面含氧官能團和自身結(jié)構(gòu)決定,普通炭黑表面活性點主要由表面含氧官能團決定;炭黑表面活性點主要分布于炭黑聚集體邊緣處,即活性點區(qū)域主要集中于炭黑聚集體的邊緣處,與炭黑邊緣呈粘彈性有關。
[Abstract]:Because of the complexity of the structure and the active site of the surface, the high structure carbon black has better reinforcing performance than the common carbon black. In this paper, the surface structure and active sites of high structure carbon black were studied in order to understand the reinforcing mechanism of carbon black and improve the reinforcing performance of carbon black. To promote the development and application of carbon black on "Green Tire". (1) in this paper, the morphology and structure of high structure carbon black and ordinary carbon black were characterized by atomic force microscope (AFM) DFM model and their phase diagrams were analyzed. The results show that the structure of high structure carbon black is more complex, with cross-linked network structure and grape string structure, especially CRX2125 CRX1380 and DZ13 have pore structure, CRX1380 and lamellar structure. These unique morphological structures are scanned for the first time. The phase diagram of N660 is spherical and ellipsoidal. DFM phase diagram reflects the structure at the edge of carbon black aggregate, which is an important supplement to the morphology diagram. The results show that the color of the edge of carbon black aggregate is brighter than that of the middle part of the aggregate, which shows that the edge of all kinds of carbon black aggregates is viscoelastic. The surface force curves of carbon black aggregates treated with different temperatures and oxygen were analyzed by atomic force microscope (AFM) DFM model. The results show that the high structure carbon black CRX1380 CRX2125N234 exhibits very little activity at room temperature and atmospheric pressure, while the carbon black DZ13N115 and common carbon black show no activity, and after high temperature aerobic treatment, the carbon black exhibits activity, and the probability of active point increases greatly. Only high structure carbon black (CRX1380, CRX2125DZ13) showed active element analysis after treatment in ultra-high temperature vacuum. The results showed that the oxygen content of carbon black aggregates increased significantly after aerobic treatment at high temperature, which can be seen from the statistical results of DFM force curve. With the increase of oxygen content in carbon black aggregates, the probability of appearance of surface active point is also increased. After treatment at 1350 鈩，

本文編號：1917057