mmt 中文意思是什麼

Consequently, with increasing mmt content, the tensile strength and young ' s modulus of hdpe - g - aa / mmt nanocomposites increased, while that of hdpe / mmt composites decreased. moreover, the addition of mmt to hdpe - g - aa decreased the melting temperature and the degree of crystallization of the matrix. these changes may be attributed to high interfacial adhesion between hdpe - g - aa matrix and exfoliated clay, which reduces the mobility of crystallizable pe chain segments, and subsequently reduces the crystallization ability

研究結果表明： mmt在hdpe中不能達到納米級分散，而在hdpe - g - aa中， mmt能以插層型利剝離型的結構存在，這主要是由於極性的丙烯酸接枝在hdpe上提高了後者的極性，而且能與mmt上的活性基團進行化學反應，從而提高了pe鏈進入mmt層間的可能性，使mmt在基體中達到納米級分散。

X - ray diffractograms shows mmt in obtained nanocomposites has exfoliated structure

Dsc表明蒙脫土的引入提高了共聚物的t _ g 。

Section one : preparation of polyacrylic acid / montmorillonite ( paa / mmt ) water absorbent hybrids by aqueous solution intercalated polymerization as montmorillonite is easily dispersed in water uniformly, the polyacrylic acid / montmorillonite ( paa / mmt ) was prepared by simple aqueous solution intercalated polymerization

並利用紅外（ ft - ir ） 、 x ?射線衍射（ xrd ）對產品進行了表徵，結果證明此材料為嵌入型插層復合物。

It could be found that mmt was partially exfoliated and partially intercalated in the matrix. a proper amount of mmt could improve the mechanical and thermal propertied of the pvc / ( pb a - mmt ) nanocomposites

發現mmt形成了部分剝離部分插層的結構，並且適量mmt的加入可以提高復合材料的力學性能和熱穩定性。

Dsc for the nanocomposites showed the glass transition temperature ( tg ) of the nanocomposites increases slightly as the mmt content increases. water absorption velocity and water retentivity under pressure tests showed the addition of montmorillonite ( mmt ) can improve the beginning absorption velocity and water retentivity for pure superabsorbent resin

吸水速率和加壓保水能力測試表明，一維納米級蒙脫土片層的引入能在一定程度上提高高吸水性樹脂的初期吸水速度和加壓下的保水能力。

The results from x - ray diffraction demonstrated that pp / mmtome was a fully intercalated nanocomposite, pp / mmtom and pp / ommt were partly intercalated nanocomposites, but the intercalation effect of pp / mmtom nanocomposite was better ; the crystallization characteristics of pure pp and pp / mmt nanocomposites were investigated by dsc, waxd and pom. the result of these testing showed that mmt nano - layers acted as nucleating agents for the crystallization of pp, the addition of mmt had effect on the crystallization process, leading the increasing of crystallization temperature crystallization rate and crystallinity, but also the dimension of spherulite reduced. but the formation of pp crystal did n ' t change, the formation of pp crystal in three pp / mmt nanocomposites and pure pp were a - form on the whole ; influences of three sorts of mmt on mechanical properties of pp / mmt nanocomposites were studied, as a result, the addition of mmt comprehensively improved mechanical properties of pp : notched impact strength, tensile strength and flexural properties were all increasing, but the extent of increasing were n ' t large

通過xrd分析比較這三種pp mmt納米復合材料微觀結構得到， pp mmt _ （ ome ）屬于完全插層， pp mmt _ （ om ）與pp ommt的插層程度相近，但是pp mmt _ （ om ）相對較好；通過對純pp和三種pp mmt納米復合材料的結晶性能研究發現，蒙脫土納米片層對pp結晶產生明顯的異相成核作用，結晶能力增強，使pp的結晶溫度和結晶速率提高，結晶度增加，球晶晶粒細化，但是沒有改變pp的結晶形態，三種pp mmt納米復合材料的結晶形態都屬于晶；通過對pp mmt納米復合材料的力學性能測試得知，蒙脫土的加入全面提高了pp的力學性能，缺口沖擊強度、拉伸強度和彎曲性能都有一定程度的提高，浙江{ _業大學碩十學位論文摘要但是提高幅度都不是很大，不過ommt 、 mmtom和mmtc ） me三種蒙脫土對pp力學性能有著不同的改性作用，其中pp / mmtom最好， pp月邊mto崛次之， pp / ommt最低，這種情況主要是由蒙脫土對pp結晶性能的影響和蒙脫土的納米改性作用造成的。

The work was composed in five parts : ( 1 ) epoxy resin / org - mmt / diethylenetriamine ( deta ), epoxy resin / org - mmt / imidazole ( mz ) and epoxy resin / org - mmt / tung oil anhydride ( toa ) nanocomposites were prepared by in situ intercalation polymerization

所研究的內容及其結論主要包括以下五個部分： （ 1 ） xrd測試表明環氧樹脂進入了有機蒙脫土片層內，使蒙脫土層間距增大。

For understanding thermal stabilities of woo - montmorillonite ( mmt ) composite ( wmc ), thermal properties of wood, wood - phenol formaldehyde resin composite ( wpc ) and wmc were analyzed and compared using thermal analysis ( ta )

摘要為了了解木材蒙脫土復合材料的熱穩定性，本文利用熱分析方法對木材、木材酚醛樹脂復合材料、木材蒙脫土復合材料進行了對比分析。

Intercalation and exfoliation behaviors of organo - mmts in low density polyethylene ( ldpe ) and copolyethylene / mmt systems have been investigated. it was found that ldpe has certain intercalation capability, while ethylene vinyl - acetate copolymer ( eva ) with polar groups exhibits some compatibilization and excellent intercalation capability

結果表明，非極性的ldpe插層能力極其有限，聚乙烯共聚物具有良好的插層能力； mmt分散效果以及復合材料的性能取決于高分子鏈的極性和有機蒙脫土的性質。

The mechanical tests result showed that when the mmt content is 2 % and the compatilizer content is 15 %, the pmc has best mechanical property. the izod impact strength is 16. 45 kj / m2 and the tensile strength is 35. 77 mpa, increasing 280 % and 4. 3 %, compared with pure pp. the pom photo indicated that the o - mmt can reduce the scale of spherical crystal of pp

以am為插層劑得到的聚丙烯蒙脫土納米復合材料中，蒙脫土保持剝離狀態，但力學性能不理想，當土含量為0 . 5時，材料的沖擊強度為9 . 58kj m ~ 2 ，拉伸強度為25 . 5mpa 。

Nonpolar polypropylene has bad compatibility with mmt even after organic modification to mmt. so polypropylene ( pp ) grafting acrylic acid was produced by the suspension grafting method as compatilizer. as pp / mmt nanocomposites prepared from htab modified mmt as concerned, the interlayer spacing of mmt is 4. 61nm, 4. 2nm and 4. 09nm respectively when the mmt content is 1 %, 2 % and 3 %. so, the abtained nanocomposites has intercalated structure

當土含量為2 ，相容劑用量為15時力學性能最好，缺口沖擊強度和拉伸強度分別達到16 . 45kj m ~ 2和35 . 77mpa ，分別比純pp增加了280和4 . 3 ，蒙脫土的加入起到了增韌和增強的雙重作用。

Ldpe intercalated into the space between the layers of organically modified montmorillonite ( org - mmt ), especially in the presence of compatibilizer eva

復合材料的制備受多種因素的影響，其中蒙脫土結構的不穩定性不容忽視。

Tem images revealed that the phase morphology of pls composites were influenced by the interaction among the matrix, the compatibilizer and organo - mmt. hence, a novel mesophase " " silicate sheet cluster " was also found in ldpe / eaa / mmt nanocomposite. the mechanical, barrier and thermal properties results of ldpe / mmt composites indicated that,

對ldpe mmt納米復合材料的力學性能、透氣性能以及熱力學性能的研究結果表明，插層型或剝離型pls納米復合材料的力學性能取決于基體、相容劑在硅酸鹽片層表面的相容性。

This research regarded pp grafted mah as compatibilizer, took the method of masterbatch and use new technologies prepare into high relatively content masterbatch of ommt, finally, this kind of masterbatch and pp were mixing and melting together and pp / mmt nanocomposites were prepared through pairs of spiral pole, ( series pp - b ), meantime, pp / mmt nanocomposites without compatibilizer were compared to study ( series pp - a )

本研究以pp接枝馬來酸酐為相容劑，採取母粒法，運用新型工藝制備出蒙脫土含量較高的接枝母粒，然後將這種母粒與pp通過雙螺桿共混熔融擠出制備出pp蒙脫土納米復合材料（ pp - b系列） ，同時比較研究了不加相容劑的pp蒙脫土納米復合材料（ pp - a系列） 。

The results indicated that montmorillonite was intercalated by polyacrylic acid molecular. section two : preparation of polyacrylic acid / acrylamide / montmorillonite ( paa / am / mmt ) water absorbent hybrid by aqueous solution intercalated polymerization high water absorbent polyacrylate copolymer was prepared by aqueous solution intercalated copolymerization. in this reaction, the monomers were the partially neutralized acrylic acid ( aa ) and acryl amide ( am ) ; the cross - linking agent was diacryl ethylene ( egda )

第二節溶液插層共聚制備聚丙烯酸鹽/丙烯酰胺/膨潤土雜化吸水材料及其性能研究首次利用溶液插層共聚制備了二丙烯酰基乙二醇酯（ egda ）交聯的聚丙烯酸鹽/丙烯酰胺/膨潤土（ paa / am / mmt ）雜化吸水材料。

Influence of nano - mmt on the property of epoxy adhesive coating

納米蒙脫土對環氧樹脂膠黏塗層性能的影響

The grafting degree and grafting efficiency were decreased. the conversion of semi - contionious emulsion polymerization was decreased as the addition of mmt was increased because of the effect of monomer diffusion and decreasing efficiency of intiating agent

半連續乳液聚合法制備abs mmt時，蒙脫土的存在使聚合轉化率顯著下降，並且mmt粘土含量越高，對乳液共聚合造成的不利影響越大。

Preparation, structure and properties of hdpe ~ g ~ aa / mmt nanocomposites melt grafting reaction of hdpe with aa was performed in thermohaake rheomix and hdpe - g - aa with high grafting degree and high grafting efficiency was prepared. the change of torque indicated that the graft copolymerization was existed during melt compounding. the extent of grafting was analyzed by ftir and element analysis

在hdpe中只加過氧化二異丙苯（ dcp ）時，由於發生交聯反應而使平衡扭矩明顯增加，熔點和結晶度降低，加入aa后， aa與hdpe的接枝和hdpe自身的交聯並存，前者對後者有抑制作用，從而使扭矩下降，熔點和結晶度部分恢復。

This has an important meaning to the industrial manufacture. dsc, waxd and polarizing microscope with hot stage experiments were performed to describe what led the ssp rate acceleration of pet / mmt. it was shown that montmorillonite acted as a very good nucleating agent in pet crystallization process, which results in the lower crystallinity, more small microlites, and more surfaces of microlites

為研究pet mmt固相縮聚效率提高的原因，通過熱臺偏光顯微鏡、 dsc 、 x -射線衍射等手段對樣品的結晶進行觀察與分析研究，結果表明蒙脫土對pet的結晶有明顯的成核作用，使其晶核生成速率迅速提高，晶核數量明顯增多，從而使整個結晶過程的時間變短，同時形成了更多結構不完善的微晶體。

Time - temperature superposition principle could bee applied to g " dependence on cd, and the dependence of shifted factor at on temperature demonstrated a linear relationship by a plot of in at vs. t - 1. the steady rheological measurements for nanocomposites melts were conducted. the results revealed that the melts of exfoliated nanocomposites with lower loading of org - mmt exhibited shear - thinning even at lower shear rate as compared with polymers filled with common particles, while the melts flow depended weakl

研究結果表明仁復合體系g 『和動態損耗模量寧的對數關系性呀g 『一109夕， _印維乖溫動態模量滿足時溫疊加原理，頻率移動因子（ at ）的對數與塌度的倒攀即種馬與了一『有良好的線性關系?一_面，復合體系熔體的穩態剪切流變行為具有不同於普通粒子填充聚合性。