polymer molecular weight 中文意思是什麼
polymer molecular weight
解釋
聚合物分子量-
The article analyze the concrete drying shrinkage mechanism, find the major factors of affecting the drying shrinkage, analyze the lack of shrinkage reducing agent, who be of low molecular weight and line chain, design a new shrinkage reducing agent ? ? shrinkage reducing agent of poly - acrylate. the shrinkage reducing agent of poly - acrylate is mainly composed of crylic acid 、 cinnamene 、 poly - glycol 、 solicitating agent 、 chain transferring agent and activator, which come by these processes of polymerization 、 esterifing and neutralization to form a pectinate polymer, which have a high molecular weight and many poly - oxidative alkenes
論文分析了混凝土乾燥收縮的機理，確定了影響乾燥收縮的關鍵因素，分析已有低分子量的、直鏈型減縮劑的不足，設計了一種新型的減縮劑? ?聚丙烯酸鹽類減縮劑，其主要由丙烯酸、苯乙烯、聚乙二醇、引發劑、鏈轉移劑、催化劑等經過聚合、酯化和中和反應，生成一種高分子量的、含聚氧化烯鏈的聚合物。 -
Increasing ultrasound intensity in the range of cavitation threshold and cavitation peak value, decreasing monomer concentration and increasing the temperature make the induction period shorter. under optimized reaction conditions, the conversion of ba can reach 90 % in 11 min at high n2 flow rate the viscosity average molecular weight of the obtained pba reaches 5. 24 106. the molecular weight of pba varies with ultrasonic irradiation time, indicating that the ultrasonic induced emulsion polymerization is dynamic and quite complicated, polymerization of monomer as well as degradation of polymer occurs concomitantly
一、實現了無常規化學引發劑存在下的超聲輻照引發丙烯酸正丁酯（ ba ）間歇乳液聚合，制備了pba納米粒子，在11min內轉化率達到90 ，分子量達5 . 24 10 ~ 6 ，隨反應時間的延長而降低，表明超聲輻照引發乳液聚合是一個動態的復雜過程，單體的聚合和聚合物的降解同時發生。 -
After a series of reactions, an ester which is a derivative of ferrocene is obtained, then using the ester react with 1, 8 - naphthalenediamme, o - m -, p - phenyleiiediamine, ethylenediamine and 4. 4 ' - - biphenyldiamine respectively, polymer ( i ) ( ii ) ( iii ) ( iv ) ( v ) and polymer ( vi ) are obtained at the final part, we have discussed in brief the general properties of polymer ( i ) - { vi ) and analyzed systematically hnmr ir spectrum tg - dt diagram and molecular weight distribution of these polymers
簡要討論了聚合物（ i ）一（ vi ）的一般性質，對聚合物的核磁共振譜、紅外光譜、 t （卜刃t圖以及分子量分佈進行了系統研究。本文對聚合物（ i ） 、 （ 111 ）和（硯）的核磁共振譜和紅外光譜進行了分析，研究結果表明:聚合物中的援基上的氧原子能與芳胺上的氫原子形成分子內氫鍵，使聚合物的分子內出現了一個平面六元環結構，並山于分子內氫鍵的存在 -
Determination method of relative molecular weight and degree of hydrolysis of polyacrylamide in produced fluid with polymer flooding
聚合物驅產出液中聚丙烯酰胺相對分子質量和水解度的測定方法 -
Lactide were investigated. the key factors affecting the polymer intrinsic viscosity were found to be monomer recrystallization times, stannous octoate concentration and polymerization time. the thermal stabilizing agent did not significantly affect the polymer molecular weight. the polymer with a viscosity average molecular weight beyond 200000 was fairly reproducible by optimizing the polymerization conditions. it was found that poly
單體重結晶次數辛酸亞錫濃度聚合時間等條件均是影響聚合物特性粘數的重要因素。熱穩定劑對聚丙交酯的分子量幾乎沒有影響。優化聚合條件可以獲得粘均分子量大於200000的聚丙交酯材料，聚合結果具有良好的重復性。 -
Abstract : polyphenylacetylenes were synthesized by rn ( nbd ) cl 2 and wcl6 / ph4sn catalyst systems in n2 at room temperature. polymers with high yield and high molecular weight were obtained. their structures were characterized by uv, ir, nmr and gpc, respectively. the fluorescence of the polymer solution with different concentration was investigated using variable excitation wavelength from uv to visible region. the relation between fluorescence and polymer structure was studied. the results showed that the molecular chain structure has great influence on fluorescence of the polymers. the emitting peak wavelength of fluorescence for the polymer of high stereoregularity is independent of solution concentration and excitation wavelength. the emitting peak wavelength of fluorescence for the polymer with disordered molecular chain arrangement varies with changing the solution concentration and excitation wavelength, and different emission sites in molecular chains and low emitting yield are shown. the measurement and analysis of fluorescence spectroscopy of polyphenylacetylenes may provide some useful information to judge the molecular chain arrangement in some conjugated polymers
文摘:使用有機金屬銠、金屬鎢/四苯基錫催化劑體系聚合苯乙炔，分別獲得了高產率和高分子量的聚苯乙炔.使用uv ， ir ， nmr ， gpc等分別對聚合物結構進行了表徵.採用不同波長的激發光對聚合物熒光性能進行研究，詳細分析了聚合物結構與熒光性能之間的關系.研究結果發現，不同聚合物結構對聚合物熒光性能產生很大影響，規整性高的聚合物，將有較高的發光量子效率；聚合物規整性差，將可能導致多個熒光發光結構點，其熒光強度降低.聚合物熒光光譜研究將對某些共軛聚合物結構的規整性分析提供一些有用的信息 -
The designs of composite material using inorganic filling compounds to reinforce ultra high molecular weight polyethylene ( uhmwpe ) and an improvement on thermal conductivity of polymer working as tribological material were selected as the major research subject in this thesis
本論文選擇無機填料改性超高分子量聚乙烯（ uhmwpe ）復合材料的材料設計和聚合物作為摩擦學材料時導熱性能、抗壓強度及抗蠕變性能的改進研究作為主要研究方向。 -
Six different molecular weigh polyethylene glycols were selected to prepare blend films with silk fibroin, five different molecular weight polymer - polyethylene glycol diglycidyl ether ( pego ) were synthesized and structures of them were characterized by 1h nmr, ir, gpc. a kind of silk fibroin membranes were prepared by blend the pego and silk fibroin
選用六種不同分子量的聚乙二醇與絲素共混制膜，並選用其中五種合成了五種不同分子量的聚乙二醇縮水甘油醚（ pego ） ，以合成的pego為添加劑，研究了不同分子量、不同含量下制得的改性絲素膜的結構與性能。 -
The improvement in the determination of relative molecular weight of high polymer by using viscosimetry
粘度法測定高聚物相對分子質量方法的改進 -
Studies of reasons of success or failure in experiment of viscosity measurements to calculate relative molecular weight of high polymer
粘度法測高聚物相對分子量實驗成敗探討 -
As the tender part of polymer molecule, the poly ( propylene glycol ) ( ppg ) was studied. the result suggested that prepolymer which was prepared with the ppg ( molecular weight is 1000 ) has good capability. it ' s uv - curing velocity is 35m / min, glossiness is 139. 3 %, tensibility is 23. 88 % and tensile strength is 4. 475mpa
對作為預聚物高分子主鏈柔性部分的聚醚進行的研究表明，採用分子量為1000的聚醚合成的預聚物， uv固化速度達到35m min 、固化后塗膜光澤度139 . 3 、塗膜斷裂伸長率23 . 88 、拉伸強度4 . 475mpa ，綜合性能優良。 -
The results show that compared with the intermittent polymerization, the semi - continuous polymerization can greatly improve the reaction rate, and polymer with high relative molecular weight can be easily obtained
研究表明：與間歇式聚合相比，採用雙螺桿擠出機進行半連續化聚合可以大大加快反應完成的速度，同時還容易制得相對分子質量較高的聚合物。 -
Effects of reaction conditions on relative molecular weight of inversed microemulsion polymer
反應條件對反相微乳液聚合物相對分子質量的影響 -
Silylate - terminated polyurethanes with built - in hydrophilic sites were synthesized. when the polymer is dispersed in water, the silane alkoxy end - groups of the polymer undergo hydrolysis, followed by condensation to form a stable cross - linked aqueous dispersion. tem studies indicated that with more incorporation of hydrophilic sites, the particle size of the dispersion decreased. it was also found that the film property depended on the particle size when the crosslinking density in particels was much higher. the average molecular weight of the elastically effective network chain mc measured by swelling experiments shows fairly good agreement with the theoretical value of mc. it was also found that the cross - linking density of the casting film may increase during the film formation and drying process
將硅氧烷封端的含親水基團的線性聚氨酯預聚體分散於水中，獲得穩定的聚氨酯分散體.由於硅氧基團水解、縮合，在分散體粒子內產生擴鏈交聯反應，生成了交聯水基聚氨酯分散體.透射電子顯微鏡研究表明分散體粒徑小、分佈寬.掃描電子顯微鏡研究了成膜結構及成膜性能與粒徑的關系.溶脹實驗計算獲得的兩交聯點之間的平均分子量與理論平均分子量相符.研究還發現此分散體膜在乾燥過程中可進一步交聯.膜的水溶脹及機械性能表明，此分散體具有極大的工業應用價值 -
In this thesis, pvc / organoclay nanocomposites were synthesized by in - situ intercalation and melt - blending intercaltion. the structure and properties of the composites were investigated. furthermore, some factors, such as special synthesis method, the different clay surface modifiers and the molecular weight of the polymer matrix which can be affect the intercalation results, were discussed
本文分別通過原位插層法和熔融插層法制備了聚氯乙烯粘土納米復合材料，通過插層結構和復合材料性能的對比，得出一系列有意義的結論；並研究了粘土表面修飾劑、插層方法以及樹脂基體分子量對插層結構的影響。 -
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，利於粘土片層的剝離；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。 -
The result shows that aerobic produced water, increasing polymer concentration and using high molecular weight polymer can increase the viscosity of polymer solution with produced water
結果表明，污水暴氧、提高聚合物濃度及採用超高分子聚合物，可有效提高污水聚合物溶液的粘度，是保證污水注聚的有效手段。
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