Abstract : the formation technologies, the structure and properties of tcs microporous man - made yarn - kind new polyester fibre which was spinned in tcs with some micrometallic - oxide have been studied. the results indicate that the rheological behaviour and spinnability of commixed polyester melt, and the structure and properties of the fibre, are relative to the spinning temperature, melt pressure, microporpus size for spinning, formation conditions, thermo - vascellum temperature, thermo - vascellum position and rolling speed, besides the viscosity of polyester cuts, coacervation particles, adding amount and size of micrometallic - oxide
研究表明, tcs微孔化共混聚酯
熔體在成型加工中的流變行為和可紡性,及其纖維的結構性能除了與原料切片的特性粘度、凝聚粒子和共混聚酯中超細金屬氧化物微粒的添加量、粒徑等因素的影響有關外,還與紡絲溫度、紡絲
熔體壓力、噴絲板微孔尺寸、冷卻成形條件、熱管溫度、熱管安裝位置以及卷繞速度等因素的影響密切有關。
The compositions of usual elements and rare earth elements and inclusions of corundum megacrysts related to alkali basalt in changle, shandong province, are analyzed. in the main parts of corundum megacrysts are a large number of fluid - melting inclusions, zircon, ta - columbite inclusions, and in the central crystal core are a large number of melting inclusions. the corundum megacrysts were formed in different periods and different physical chemistry conditions. the crystal core was formed in magma system, and the main parts were formed in inhomogeneously geochemical conditions in which magam and fluid phases coexisted
分析山東昌樂與堿性玄武巖有關的剛玉巨晶不同部位的常量元素、稀土元素及包裹
體組成.剛玉巨晶的主
體以大量流
體?
熔體包裹
體、鋯石、鈮(鉭)鐵礦包裹
體為主,而巨晶中的「晶核」部位則以大量的
熔體包裹
體為主,反映研究區的剛玉巨晶是在不同的階段形成的.剛玉「晶核」以及「銅皮剛玉」形成於
熔體相為主的
體系中,而主
體剛玉則形成於
熔體?流
體過渡的急劇變化的不均一的地球化學環境中
A novel method to reduce crucible erosion is by suppressing thermal convection currents, which can be done by applying a magnetic field to the melt.
減少坩堝侵蝕的有效方法是對
熔體施加磁場以抑制熱對流的流動。
The result shows that all these system are simple eutectic, at the same time, the entropy of phase change of every system in the eutectic point is determined by using differential scanning calorimetry ( dsc ) on the basis of experimental research, through the improved one - parameter margules equation by introducing a new variable temperature, the improved equation was designed to compute solid - liquid equilibrium
測定結果表明,這幾組
體系均為簡單低共
熔體系;同時利用差熱掃描量熱法( dsc )對上面各組
體系低共
熔點處的相變焓進行了測定。在實驗研究的基礎上,通過改進單參數margules方程並引入新的變量溫度,達到了將此方程用於固液平衡計算的目的。
This article choosed out organic phase change materials, and, the solid - liquid - equilibrium of eleven binary system including fatty alcohol / fatty acid, n - octadecane / fatty acid, n - octadecane / fatty alcohol system were determined by cooling curve, and, t - x phase diagrams of these systems were drawn. the result shows that all these systems are simple eutectic, at the same time, the entropy of phase change of every system in the eutectic point is determined by using differential scanning calorimetry ( dsc ). and n - octadecane / fatty acid systems were calculated theoretically
本文初選出部分有機相變貯能材料,採用步冷曲線法測定了12醇-羧酸系列、 18烷-羧酸系列、 18烷- 12醇
體系共11組
體系的二元固液相平衡關系,繪制了這11組
體系的t - x相圖,測定結果表明,這幾組
體系均為簡單低共
熔體系;同時利用差熱掃描量熱法( dsc )對上面各組
體系低共
熔點處的相變焓進行了測定;並對18烷-羧酸系列進行了熱力學理論預測。
Study on extensional flow behavior of pp melt
聚丙烯
熔體拉伸流變行為的研究
Plastics - determination of the transient extensional viscosity of polymer melts
塑料.聚合物
熔體瞬態拉伸粘度的測定
Calculatie retention time of plastic melt in extrusion moulding head
塑料
熔體在擠出模頭中停留時間的計算
Thermodynamic analysis on liquid ferromanganese dephosphorization
錳鐵
熔體脫磷熱力學分析
Advances in tin distribution between granitic melts and coexisting aqueous fluids and a review of tin in fluids and melts
錫在花崗質
熔體和流
體中的性質及分配行為研究進展
A new method should be discovered to design the function block. the thesis is based on the rheology and hydrokinetics of the polymer melt, and calculates the velocity in the die by fem simulation, and provides die design with theory proof. according to the existed theory, i summarize and conclude the fem formula of the polymer flow, and then write the program to calculate on the computer
本論文中功能塊結構的研究,是以
熔體的流變性以及流
體動力學理論基礎上,對在口模中的
熔體進行數值模擬,計算出
熔體在口模中的流動參數(主要是速度的分佈) ,從而可以科學的對功能塊幾何結構進行優化。
Research on hypoeutectic al - si alloy melt treatment process
合金
熔體處理工藝研究
Interactions of melt processes of hypoeutectic al - si alloys
亞共晶鋁硅合金
熔體處理工藝的交互作用
A study of melt thermal treatment imposed on hypoeutectic al - si alloy
合金
熔體溫度處理工藝參數研究
Study of melt flow in injection molding process
塑料注射成型充模階段中熔體流動的研究