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exfoliation n.1.剝落;【醫學】表皮剝落;剝落物。2.分層(絲織品...

exgratia

The process and mechanisms of slipping , exfoliation to layered graphite and compounding with polypropylene ( pp ) on nano - scale were systemically studied . the effects of shearing force field offered by pan - milling and confined environment of the exfoliated graphite on the microstructure of polypropylene , the electrical and thermal conductivities of the nanocomposites were also investigated . based on the experimental results , a modified electrical conductive model as well as thermal conductive model for polymer - based composites was proposed 利用層狀無機物(如石墨)的弱層間結構和聚合物的粘彈性特點,在磨盤碾磨剪切力場作用下,通過摩擦和拉伸形變錯位、擠壓嵌合、拉伸滑移、剪切剝離與粉碎和混合分散等過程,實現層狀無機物層間剝離和與聚合物的納米復合。

Organophilic montmorillonite was obtained by cation exchange on montmorillonite surface , which was modified from hydrophilic to hydrophobic and led to the increase in the basal distance between silicate layers of about 1nm . the intercalation and exfoliation behavior of organophilic montmorillonite in dgeba - montmorillonite system have been investigated by x - ray diffraction and transmission electron microscopy and the properties of nanocomposites were tested 在環氧樹脂蒙脫土納米復合材料的制備中,用十六烷基三甲基氯化銨通過陽離子交換的方法對蒙脫土進行了有機化處理,使蒙脫土由親水性變成親油性,其層間距也由原來的1 . 2nm擴大到2 . 2nm 。

Secondly , the intercalation and exfoliation behavior of two layered silicates modified by organic cation ( dk1 and dk3 ) with the resol under different conditions is investigated . it is found that the intercalated structure of dk3 is preserved and exfoliated in cured rplsn , while the resol intercalated in dk1 is deintercalated when it is cured . it is suggested that dk3 intercalated in the resol is more stable in the curing process than dk1 結果表明, dk3在樹脂中較為穩定,能形成剝離型納米復合材料,而dk1在樹脂中不穩定,固化后, d _ ( 001 )反而會有所減小;兩者插入過程都非常快;對dk3來說,在合成樹脂過程中立即加入粘土和將樹脂與dk3進行直接熔融插層的效果差別不大。

Curing agents and mixing conditions were two important factors that effected on exfoliation behavior of organophilic montmorillonite in diglycidylether of bisphenol a matrix . the organophilic montmorillonite was exfoliated completely and there were no d001 diffraction peaks with methyltetrahydrophthalic anhydride as curing agent and benzyldimethylanine as catalyst . properties test results show that mechmical properties , electricity properties , heat distortion temperature of the exfoliated nanocomposites were all improved by addition of the montmorillonite , and the nanocomposites had lower linear thermal expansion coefficiency and water absorption compared with neat epoxy resin 結果表明,環氧樹脂與有機蒙脫土的相容性好;混合條件和固化劑是影響有機蒙脫土在環氧樹脂中剝離的兩個重要因素,在一定的混合條件下并選用合適的固化劑可以使蒙脫土在環氧樹脂中完全剝離;剝離型環氧樹脂蒙脫土納米復合材料的力學性能、電性能、熱性能以及吸水性能與純環氧樹脂固化物相比均有不同程度的提高和改善。

The results was explained with the scattering theory of spherical particles , which indicated that the effect of morphology of composites on the transparency mainly came from the exfoliation extent of amt , which caused the change of the particle size and basal spacing of amt in epoxy matrix , and the effect of the particle size was more significant than the basal spacing of amt 對剝離型納米復合材料的透光率與有機土含量及波長的關系進行了進一步的研究得出,材料的歸一化透光率與有機土含量及波長存在下列經驗關系:并采用球型粒子光散射模型對上述實驗結果進行了理論分析。

This is because they have inclusive between the polar groups of nylon and organo - mmt ( ommt ) . however , pp is a kind of non - polar polymer with mmt being difficult to realize complete intercalation and exfoliation . therefore , the domestic research about the pp / mmt nanocomposites were still little 這是由于尼龍的極性基團與有機化蒙脫土的極性基團之間具有相容性,而聚丙烯( pp )是一種非極性的聚合物,與蒙脫土不易實現完全的插層剝離,因此國內關于pp蒙脫土納米復合材料的研究還鮮有報道。

Base on our experimental results , a conclusion can be deduced . when the polymer and silicate layers have some capacity , the polymer chains with great molecular weight can exert much greater shear and stress , which is favorable to the exfoliation . while , the huge molecular weight could lead to the loss of fluidity of the polymer melt 在樹脂基體于粘土片層具有一定相容性的前提下,分子量較大的分子鏈對粘土片層可產生較大的作用力,利于粘土片層的剝離;但過大的分子量又降低了聚合物熔體的流動性,妨礙了粘土的進一步插層。

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 variations of the surface state and environment conditions could change the procedure of exfoliation , therefore , the potentiometry and electric resistance methods in this paper are used to measure the exfoliation rate of aluminum alloys in a constant temperature , the experimental results show that relations of natural corrosion potential vs time have a resemblance to those of corrosion rate vs time , both relations are all at the different change rates in the front and back of 120 minutes 超硬鋁合金表面狀態、環境條件的變化,均可能改變剝蝕的發展過程,為此,本文提出在恒溫條件下,用電位法、電阻法定量研究鋁合金的剝蝕性能。實驗結果顯示了lc4cs鋁合金的自腐蝕電位與時間的關系,和腐蝕速率與時間的關系有著十分相似的規律,兩者均在120分鐘前后有不同的變化。

The factors relevant to montmorillonite intercalation and exfoliation were analyzed through x - ray diffraction ( xrd ) , thermogravimetry ( tg ) , transmission electron microscope ( tem ) , scanning electron microscope ( sem ) and fourier transform infraredspectroscopy ( ft - ir ) . the morphology , structure and properties for the composites were discussed 通過x -衍射( xrd ) 、熱重分析( tg ) 、透射電子顯微鏡( tem ) 、掃描電子顯微鏡( sem )以及傅立葉變換紅外光譜( ft - ir )的表征結果討論了影響蒙脫土剝離的因素,分析了復合材料的形態結構和性能。

The key products of the company are high alumina brick , fireclay brick , phosphate - bonded wearable brick , exfoliation - resistant high alumina brick , high refractoriness under load brick , corundum brick , magnesite brick , magnesite ? chrome brick , series of corundum , sic furnace chamber and pipe , ceramisite brick , corundum - mullite brick , corundum - chrome brick , sillimanite brick , magnesite alumina spinel brick , acid - resistant brick , alkali - resistant brick , zirconia - corundum brick , alumina bubble products , series thermal insulating refractory products , high alumina castable , corundum castable , corundum ramming , brown - corundunm castable , sic castable , low - cement castable , alkali ? resistant castable , light silica alumina products , stainless steel fibre reinforced castable , etc 主要產品有:高鋁質磚、粘土質磚、磷酸鹽耐磨磚、抗剝落磚、高荷軟磚、剛玉磚、碳化硅磚、鎂磚、鎂鉻磚、各種剛玉、 sic爐膛、爐管制品、陶粒磚、剛玉莫來石磚、鉻剛玉磚、硅線石磚、鎂鉻尖晶石磚、耐酸磚、耐堿磚、鋯剛玉磚、氧化鋁空心球制品及各種輕質保溫材料、高鋁質澆注料和剛玉澆注料、搗打料、棕剛玉澆注料、碳化硅澆注料,低水泥澆注料、抗堿性澆注料、輕質硅酸鋁制品、鋼纖維增強澆注料等80余種系列耐火材料。

Graphite ) and the special viscoelasticity of polymer , interlayer exfoliation of the filler and its nanocompounding with polymers can be realized in the shearing force field of pan - milling , through the effects such as deformation , dislocation , tension - sliding and shearing exfoliation of graphite , the tension - thinning , pulverization of pp , as well as the imbedding , mixing and dispersion of graphite flakes in pp powder etc . the results show that the interlayer exfoliation of graphite and nano - compounding with pp proceeded stepwise , caused by a combination of friction , squeezing , stretching , and shearing in three - dimension during pan - milling 石墨片層的受限空間影響i一pp / yep25o復合材料中pp結晶行為,進入石墨片層間的pp分子一部分擇優取向,形成沿( 040 )晶面法線方向擇優生長的a一晶,另一部分相對分子質量較小、運動活性較高的pp分子則受到石墨片層的擠壓和限制而轉化為y -晶,在i一pp廳ep250復合材料中, y -晶相對含童達34 . 8 % 。

In this research , the factors which influence the intercalation and exfoliation of layered silicates have been analyzed . the dispersion of layered silicates into rubber and the mechanism of improving mechanical properties of rubber due to the addition of layered silicates have been theoretically analyzed 本課題結合研究結果,分析了制備納米復合材料過程中影響層狀硅酸鹽插層和剝離的主要因素,對層狀硅酸鹽在橡膠基體中的分散機理和增強機理進行了理論分析。

The mechanical properties indicated that the improved exfoliation degree of mmts was essential for better properties of the nanocomposites , while the mechanical properties of interc alated nanocomposites were dependent on the structure of the organic modifiers 3 有機蒙脫土層間有機物含量較高,有利于聚合物插層和mmt片層剝離分散。片層剝離分散程度大,有利于提高復合材料的力學性能;插層型復合材料的力學性能與表面活性劑分子結構有關。

Such a result may be attributed to the different intercalation mechanism and process , at the meanwhile , we can learn that the intercalation and exfoliation can be made in a much wider range of organoclays and at a greater extension by in - situ intercalation than the melt - blending 這是由兩種不同的插層方法所采用不同的插層機理決定的。這一結果也證明原位插層法可以在更寬泛的粘土表面特性的范圍內實現更大程度的插層。

It was found that exfoliation of clay occurred when the curing speed of intra - gallery was faster than that of extra - gallery even the epoxy / clay compositions were cured at any temperatures , for any time and with any types of curing agents 研究表明,當蒙脫土層間的固化速度大于層外固化速度時,采用不同的固化劑,固化不同時間,在不同的溫度下固化都可以得到剝離型的環氧/蒙脫土納米復合材料。

The intercalation and exfoliation behavior of lamellar clay in the thermoset resin / clay composites during curing was studied in this paper . for epoxy / organoclay system , intercalation and exfoliation behavior of organoclays in epoxy resin has been investigated 本論文以熱固性樹脂/粘土復合體系為研究對象,主要研究了分散在聚合物基質中的層狀粘土在固化過程中插層和剝離行為。

Formulated with alpha hydroxy acid ( aha ) , ginseng and swertia herb extracts to soften the scalp and help maintain the scalp ' s natural exfoliation process and healthy condition to promote healthy - looking hair 健康的頭皮才能長出強健頭發,所以于洗發水后使用頭皮更新精華,其人參及清葉膽草本精華成份能軟化頭皮,加上果酸成份有助去除頭皮死皮細胞,保健頭皮,減少秀發折斷。

Contains a blend of specially selected alpha hydroxy acids ( ahas ) , naturally derived from sugar , citric fruit , apples and acerola cherries , which help enhance the metabolism and exfoliation of the skin 結合蔗糖、橘子類水果、蘋果及針葉櫻桃等多種復合果酸萃取成分,可溫和促進皮膚角質層的新陳代謝,有效加速死皮脫落兼發揮高度保濕及活膚的不同功效。