聚合變晶 的英文怎麼說
中文拼音 [jùgěbiànjīng]
聚合變晶
英文
glomeroblast-
High accuracy kdp crystal optics is now considered as one of optics that is the most difficult to be processed for its series of disadvantageous characteristics to optics processing such as anisotropy, soft nature, easy to deliquesce, high brittleness, sensitive to temperature change, easy to crack and so on. therefore the long machining period, low percent of pass and astaticism quality has become the bottleneck of icf technology, and the surface quality control of kdp crystal processing has become the key problem to be solved in the research of icf in our country
Kdp晶體零件是目前公認的最難加工的光學零件之一,因為kdp晶體具有各向異性、質軟、易潮解、脆性高、對溫度變化敏感和易開裂等不利於光學加工的特點,所以加工周期長、合格率低、質量不穩定成為慣性約束聚變技術的瓶頸, kdp晶體超精密加工表面質量控制問題已經成為我國慣性約束聚變研究中亟待解決的關鍵問題。2801 and lbg was used as polymer matrix because of their different hfp ratio, dbp was used as plasticizer. the films were made by bellcore method. structure, crystallinity, liquid uptake and conductivity of the films with different ratio of pvdf dbp sio2 was determined
本文用hfp含量不同的2801和lbg為基體, dbp為增塑劑,採用bellcore方法制膜,得到了聚合物電解質的結構、結晶度、吸液量和電導率隨sio _ 2 、增塑劑含量、聚合物結晶度的變化規律,並對納米無機粒子改性聚合物電解質的機理進行了一些探討。According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d
本文首先介紹了ld泵浦nd : yag激光器的發展狀況、主要特性及其應用,從四能級速率方程出發,推導了ld泵浦nd : yag激光器的閾值、輸出功率和斜效率的表達式,並簡述了激光器的工作原理、結構型式和倍頻方法;其次,以空間相關的速率方程為基礎,提出了ld端面泵浦nd : yag激光器的設計方法,給出了一定泵浦耦合方式下,振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據,以此為依據,設計了自聚焦透鏡耦合小功率ld泵浦nd : yag激光器和透鏡組耦合高功率ld泵浦nd : yag激光器,對激光器的輸出功率和功率穩定性等特性進行了實驗研究;再次,在帶尾纖輸出的高功率ld泵浦nd : yag激光腔內插入一隻空液晶盒,觀察到了激光器以單縱模運轉;最後,根據泵浦光焦斑端面位置對激光輸出功率的影響規律,提出了ld端面泵浦nd : yag激光位移傳感新方法,並進行了理論和實驗研究,研究結果表明:當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時,激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律,測量范圍和靈敏度依賴于泵浦功率,隨著泵浦功率的增加,測量范圍擴大,靈敏度提高,當端面泵浦功率為7 . 24w (最大輸出功率為1 . 926w )時,激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。A cyclic radial shearing interferometer was used to diagnose the wavefront distortion of a laser system and an lcslm ( liquid crysnd spatial ligh modulator ) was used to control it. some results have been summarized as follows : l. according to the theory of scalar quanity diffeaction and the model of the random gaussian phase screen of low frequency wavefront, the effect of the low frequency wavefront with different rms gradient on the focal spot of a laser beam was studied
本論文在激光光束波前畸變檢測和控制上進行了新的探索,主要就空間相位調制環路徑向剪切干涉儀以及它對波前畸變的檢測和液晶空間光調制器及其對中頻段波前畸變的控制進行了研究,其研究的內容和取得的成果如下:一、根據標量衍射理論,結合低頻波前畸變的高斯隨機位相分佈模型,研究了不同均方根梯度低頻畸變波前對激光光束焦斑聚焦性的影響,並採用描述中頻段波前畸變的功率譜密度概念,模擬計算了它對激光焦斑旁瓣的貢獻。Isothermal and non - isothermal crystallization behaviors were also investigated. the results of ft - ir, uv spectrum, waxd and sem indicated that rigid rod polymer polyazomethines were polymerized in the composites. the addition of pam changed the crystallization morphology and apparent crystallinity of the composites, but did not change the basal crystal form
通過對復合材料ft - ir 、紫外光譜、 waxd和sem等測試分析,表明復合材料中存在剛性棒高分子聚甲亞胺,其存在改變了pa - 6的結晶形態和表觀結晶度,但尼龍6的晶型並沒改變。Through the research on the crystallite of the composites modified with silicone coupling agent and pp - g - mah, research showed that the size of the crystallite and oriented crystallization had obviously influence on the mechanical performances. the sem results showed that nano - sio2 was dispersed well in pp, which promoted the matrix undergo shear yielding rather than brittle fracture
通過對硅烷偶聯劑?馬來酸酐接枝聚丙烯共聚物作為界面改性劑改性pp微晶的研究,表明微晶尺寸變化與復合材料的力學性能有關;在界面附近形成擇優取向的結晶層,促使基體發生屈服變形,提高了復合材料的韌性。The investigated results express that configurational entropy will increase with increasing temperature and is determined by the heat capacity difference, which is restricted within the constant value and a value inverse with temperature
研究結論表明:聚合物的構型熵隨溫度的上升均增大,並由同一物質非晶態的熱容量與晶態的熱容量之差決定,其變化限制在熱容量差為恆定及與溫度成倒數的范圍之內。By means of the calorimetric experimental results and the temperature dependence of heat capacity differences, four kinds of temperature dependences of configurational entropy, dielectric relaxation index and cooperatively rearranging region are studied, on the basis of configurational entropy theory on cooperatively rearranging region in disordered amorphous materials by the methods of the relationship between configurational entropy and heat capacity difference, and the equation of relaxation time with activated energy barriers
摘要基於無序非晶材料「關聯重排區域」的構型熵理論,運用構型熵與熱容量差的關系式、弛豫時間與活化勢壘的基本公式,及聚合物量熱學的實驗結果和熱容量差與溫度的基本關系,研究了4種情況下構型熵、介電弛豫指數和關聯重排區域大小的溫度變化關系。The introduction of lateral rods firstly induced the decrease of crystallization ability, which resulted in the descent of melting points. further increasing the lateral rods centent resulted in the increase of polymers " melting points. but it was interesting that the solvability was enhanced all the time
橫向液晶基元的引入首先導致聚合物結晶能力的下降,熔點降低;進一步增加橫向液晶基元的含量,聚合物的結晶能力又逐漸增加,熔點升高,但是,聚合物的溶解性始終變好。For the crystalline polymer matrix, the ptc transition temperature is close to the melting point, while for the amorphous polymer matrix, the ptc transition temperature is close to the glass transition temperature
Ptc轉變溫度與體積膨脹的轉變溫度非常一致,對于結晶聚合物基體體系, ptc轉變溫度在基體的熔點附近,而對于非晶聚合物基體體系, ptc轉變溫度在基體的玻璃化轉變溫度附近。The equipment for simultaneously measuring resistance, volume expansion and temperature was constructed. two different polymer matrices, crystalline high density polyethylene ( hdpe ) and amorphous polystyrene ( ps ) were selected, which were loaded with carbon black ( cb )
自行設計製作電阻-體積膨脹-溫度同步測量裝置,研究了炭黑( cb )填充聚合物基ptc材料的電阻率隨體積膨脹的變化關系,聚合物基體分別為結晶聚合物高密度聚乙烯( hdpe )和非晶聚合物聚苯乙烯( ps ) 。The surface of ce02 - ti02 films were very smooth and difficulty to crystallization. the ceo2 - tio2 complex films were nanocrystalline microstructure or microcrystalline even if to heat the substrates or to anneal the films. the ceo2 and tio2 nanocrystalline were not easy congregate and bigger because of heterogeneity interface disturb and have many defect
組成ceo _ 2 - tio _ 2混合薄膜顆粒粒徑在納米尺度范圍3 ? 50nm ,與純ceo _ 2 、 tio _ 2薄膜相比,具有更小的表面粗糙度和更難結晶,這是由於異質材料晶界的相互干擾,使同質顆粒之間難于聚集而結晶長大,薄膜處于納米晶或雛晶態,即使加熱基片或薄膜進行熱處理也無明顯變化。The apparent activation volume calculated by the model is about 2500a3, which was ten times larger than that of usual amorphous alloy and was at the same range of the amorphous polymer. the model shows the main deformation mechanism of nanocrystalline ag is grain boundary sliding, which in some extent declares the similar forms of equation with amorphous alloys. with the ananlysis to the hrem of nanocrystalline ag, the discrepancy of the apparent activation volume between the nanocrystalline ag and amorphous alloys is interpreted by the loss of atoms participating in grain boundary sliding without enough reconstruction by the movement of atoms under the low temperature
運用晶界滑移的熱激活理論對壓縮實驗結果進行了數值擬合,擬合曲線與實驗數據符合很好,得到了晶界滑移的表觀激活體積(熱激活基本單位體積與局域瞬態應變的乘積) ,約為2500a ~ 3 ,先當于幾十個原子體積大小的瞬態變化,約為非晶合金的10倍以上,與非晶高聚物的表觀激活體積相當。The emphasis of this article is studying the influence of the polymer net in the clc to the reflected spectrum. at the same time, under the laboratory condition in possession, a design scheme of manufacturing psct with better planar structure, which needn ’ t orienting and rubbing, is found out by optimizing the craft condition like the species of polymer monomer, the concentration of monomer, the polymerization conditions ( temperature, time, uv light intensity )
本論文的重點是研究膽甾相液晶中聚合物網路對反射譜特性的影響,在實驗室現有的條件下,通過改變聚合物單體材料、聚合物單體濃度及聚合條件(紫外光光強、光照時間、聚合溫度) ,並結合一定的理論指導和實驗現象分析,找出了一種製作具有較好平面取向的psct的設計方案。Polymer networks have been produced in a variety of liquid crystal phases in cells without surface treatment. the liquid crystal / monomer mixtures are prepared using a ferroelectric liquid crystal and a diacrylate monomer. the polymerisation of the monomer is carried out by uv curing the mixture when it was kept in a specific phase which can be obtained by controlling the temperature of the ferroelectric liquid crystal. both the monomer and the polymer network will depress phase transition temperatures. the effects of the polymer network on the packing arrangement of the ferroelectric liquid crystal molecules are examined by means of optical microscopy. the molecular packing arrangement of the ferroelectric liquid crystal in a specific mesogenic phase is frozen on the formation of a polymer network in the ferroelectric liquid crystal in that phase. the existence of the diacrylate based polymer network can improve the electrooptical switching of the ferroelectric liquid crystal
在灌裝于未經表面處理的樣品盒內處于不同狀態的液晶中制備聚合體網路.液晶/單體混合物由鐵電液晶和雙丙烯酸單體製成.單體的聚合通過維持該混合物處在一定的液晶態的條件下經紫外線固化來完成.不同的液晶態可通過控制鐵電液晶的溫度來獲得.雙丙烯酸單體或聚合體網路的存在會導致鐵電液晶載體的相變溫度降低.通過光學顯微鏡可觀察聚合體網路對鐵電液晶分子組合排列的影響.結果發現:在某一液晶態中鐵電液晶分子的組合排列可被在該液晶態中聚合而成的聚合體網路所穩定,雙丙烯酸基聚合體網路的存在可改良鐵電液晶的電光開關特性The effects of the polymer network on the packing arrangement of the ferroelectric liquid crystal molecules are examined by means of optical microscopy
雙丙烯酸單體或聚合體網路的存在會導致鐵電液晶載體的相變溫度降低。Composition, viscosity and interfacial tension are the most important effects that affect blends ' thermodynamic properties and crystal properties consequently change morphology of pp / ps blends
聚丙烯/聚苯乙烯共混物的相形態受多種因素的影響,其中混合比例、黏度和界面張力為最關鍵的因素,影響著共混物的熱性能和結晶性能,從而導致相態的各種變化。Besides, the paper further touched the research on the relationship of crystallization - melting, transitionrelaxati - on and compatibility with damping properties of polysiloxane / polyacrylate complex damping materials
對聚二甲基硅氧烷聚丙烯酸酯復合阻尼材料的結晶與熔融,轉變與鬆弛,以及相容性與阻尼性能關系進行了研究討論。Abstract : new progress of raman technique in the research on macromolecule science recent years was summarized in this paper including the miscibility of polymer blends, the mechanism of surface plasticization, the monitoring of stress and strain relaxation process, raman imaging, the monitoring of polymerization, determination of curing process, the monitoring of crystal process in polymer and the study on the structure of water and intra - and inter molecular interactions in the solution of polymer and gelatin. a great deal of research of raman technique in this aspects were also summarized
文摘:綜述了拉曼技術在高分子科學研究中近年來的最新進展,包括聚合物共混物的相容性、表面增塑機理、應力鬆弛和應變過程的監測以及拉曼成像、聚合反應監控、固化過程監測、聚合物結晶過程監控、聚合物水溶液和凝膠體系中水的結構及分子間、分子內相互作用力的研究。The blade ' s color depends on the nature of the jewel it springs from, and while its length is fixed in the case of a single jewel lightsaber, lightsabers equipped with multiple crystals can have their length varied by rotating a knob that allows the focusing crystal activator to subtly modify the refraction pattern between the gems
劍刃的顏色取決于源晶體的性質,盡管單晶體光劍的劍刃長度是固定的,裝備有復合水晶的光劍可以通過旋動一個旋鈕來移動聚焦晶體,來精確地調整晶體間的折射方式,從而隨意改變刃長。分享友人