pmma 中文意思是什麼

One of the most common bone substitutes used in clinic is polymethylmethy aery late ( pmma ). pmma can be described as an alloplastic, synthetic, nonbiodegradable polymer which has considerable versatility. however, a common problem associated with the application of pmma is the loosening

以有機玻璃作為母相，摻入一定比例的羥基磷灰石（ ha ）粉末，是一種較為有效的改善生物活性的方法，因為羥基磷灰石是人體硬組織的一種無機組分，與骨組織有良好的相容性和親和力，能誘導其周圍骨組織的生長。

To chemical measure, the higher molecular of peg is, the better result will be got ; to soap - free polymerization, on the contrary, the content of pmma enwrapping nano - silica effect few on results, which is obviously shown in data of stain resistance

單從化學法本身看，接枝peg的分子量越大，結果越好，耐沾污性能表現尤為明顯；無皂乳液聚合也許由於本身方法的因素使得mma包裹量對結果影響不顯著。

Study on thermal stability pmma montmorillonite nanocomposite

2復合介質陶瓷微波性能影響的研究

Coating ' s transparent and abrasive characters are measured by spectrophotometer and abrasion instrument and sway pole sclerometer. as a result, lacquer ' s abrasion - resistant performance improved 100 % adding 15 % nano - alumina. nano composite coating improved pmma base 2. 75 times

用分光光度計、耐磨儀及擺桿硬度計測定了塗料的透明性和耐磨性，添加15 %的納米al2o3 ，塗膜的耐磨性能提高了100 % ，納米復合塗料對底材有機玻璃的耐磨性能提高了2 . 75倍，可見光透過率在80 %左右。

At the same time we study, analysis and discuss the action that non - linearity - stickiness - springiness and crazing damage of the pmma sample under creep though making us of the knowledge about the high molecule physics the damage theory of material of rheology of bodies with defects. through the study and theory analysis of single - axes stretching experiment in pmma sample under creep, take the surface crazing damage density of pmma sample as an variable, to look for a commonly rule that the crazing damage of pmma, and to offer a feasible damage model for the sake of study that of pmma ' s remoteness damage

同時運用高分子物理、含缺陷流變性物體的材料破壞理論等知識，對無孔洞pmma試件和有孔洞pmma試件蠕變條件下非線性粘彈性行為及其銀紋損傷現象進行了研究、分析與探討，通過對蠕變條件下的pmma試件的單軸拉伸實驗研究和理論分析，以pmma試件的銀紋損傷面密度值為損傷變量，來嘗試尋求pmma銀紋損傷的一般規律，為研究pmma的細觀損傷提供了一種可行的損傷模型。

Ir, sem - edx, and water contact angle measurements on polysilane and polyacrylate film obtained by double operations and single operation showed that the influence of weight ratio of polymers, the molecular of pmma on film structure was great. the film translucence dropping while the ratio of pmma / pmts grew and the compatible reducing while the molecular of pmma increased

通過測定所配製的系列濃度聚合物甲苯溶液、 thf溶液的表面張力發現：有機硅聚合物溶液的表面張力值在有機硅聚合物濃度低於30時變化不明顯；而甲基丙烯酸酯聚合物溶液表面張力值隨甲基丙烯酸酯聚合物濃度的變化比有機硅聚合物溶液明顯。

Producing single twin screw extruders including manual air blower, multi - die head, double - die stand automatic blow molding machine, storage type hydraulic hollow forming machine, dual - pipe pipe drawing machine set or pipe extruding machine set, bellows assembling set, specially - shaped materials assembling set, blow molding vacuum packing machine, granulator, and underwater granulating machine set, combined with distributing plastic packing bottle, can, bucket, box, case, film, belt, plastic toys, small specially - shaped products, draining pipe, transparent pmma pipe or transparent organic glass pipe for illuminations, plastic bellows, cable housing, cable groove, air pipe line, insulating pipe, dust absorbing pipe, drip tube, etc. flexible and hard pipe products

塑料廠自主開發直徑6 - 300mm的高檔塑料硬管，包括霓虹燈套管護欄燈管輪廓燈管汽車底盤燈管pe管pc管abs管ps管hips管as管pvc管pbc管pp管及異型材等等，能生產各種顏色及透明。擁有八條生產線的豪華陣容給予支持，模具車間自行開發模具，多種機床用於后續加工，使用進口原料，價格優越，品質引領潮流，在國內市場有著不可動搖的地位和實力。

In the paper we mainly researched space gainp2 / gaas / ge high efficiency tandem cells " making process by home - made low pressure mocvd technology and new solar concentrators. firstly, we presented reseached and development of solar cells in china and foreign countries ; secondly, on the basis of fundamental priciples and theories, we discussed some factors of influcing conversion efficiency of solar cells, and analysed the i - v output feature of two - junction tandem cells ; then the design concept of gainp2 / gaas / ge two - junction tandem cells was discussed, the detailed aspects of gainp2 / gaas / ge tandem cells epitaxy growth by low pressure mocvd was studied, and some questions on epitaxy growth ( such as crystal qualities, interface stress, element interdiffusion, n - and p - type doping et all ) were solved ; after that, the cell fabrication process was described ; finally, we reseached the hot pressing and mould process technology of an arched line - focus fresnel lens made by pmma, designed and fixed new solar concentrators

本文致力於用自製的低壓mocvd裝置進行cainp _ 2 / gaas / ge空間用高效級聯太陽能電池製作的工藝以及聚光太陽能電池組件的研究。首先，介紹了國內外太陽能電池的研究現狀及應用情況；其次，運用太陽能電池基本原理討論影響電池轉換效率的因素，分析了級聯電池的伏安特性；隨后，討論了cainp _ 2 / gaas / ge雙結級聯電池的結構設計理念，研究了採用低壓mocvd技術生長cainp _ 2 / gaas / ge級聯太陽電池材料的工藝過程，解決了異質材料生長的結晶質量、界面應力、材料互擴散以及材料n 、 p型摻雜等一系列問題；然後總結了級聯電池的后工藝製作；最後，研究了以pmma為材料的菲涅耳線聚焦透鏡的熱壓成型工藝及其模具的加工工藝，設計並安裝完成新型聚光太陽能電池組件。

Experimental study of fatigue crack overload retardation in pmma

有機玻璃疲勞裂紋超載遲滯效應的試驗研究

The thermal return reaction of hg ( hdz ) 2 doped in pmma film in the photochromic process follows second - order kinetics from ambient to 65

摘要雙硫腙汞絡合物在摻雜的pmma膜中的熱回復反應在不同溫度下遵循二級反應動力學過程，其光致變色反應機理應為雙分子過程，即分子間的氫轉移過程。

Firstly, a situ - polymerization method as the preparation process of gplb is introduced and pmma as the polymer matrix of the gel electrolyte is selected. the thermal polymerization process of the gel electrolyte is also optimized

首先，採用了現場聚合法制備凝膠聚合物鋰離子電池的工藝，根據該制備工藝選擇pmma基作為該凝膠聚合物電解質的聚合物體系，然後對凝膠的熱聚合工藝進行了優化，確定了最佳的熱聚合工藝。

The addition of pmma will reduce the crystallinity of blends and improve of the uptake of liquid electrolyte ( 260 % ) and the ion conductivity ( ims / cm ). at the same time the pvdf - hfp maintains the mechanical strength of blends film acting as polymer framework

Pmma的加入可以降低共混體系的結晶度，提高共混物的電解液吸收能力（ 260 ）和離子電導率（ 1ms / cm ） ；同時pvdf - hfp起到骨架作用，使共混物膜具有足夠的機械強度。

In order for using mdyb - 3 pmma safely and economically, it is of engineering significance to study the response of the kind of damage - contained canopy materials and structures withstanding service loading quantitatively, and to develop corresponding analytical techniques

為了安全和經濟地使用mdyb - 3航空有機玻璃，有必要對此材料的疲勞和斷裂特性進行系統的研究。為此，本文開展了mdyb - 3有機玻璃的斷裂參數、疲勞裂紋特性的試驗研究和裂紋擴展機理分析。

By means of fs - ir absorption spectra, combined quality of c60 and carrier material and existence conformation of c60 are analysesed ; the principle that c60 influence thermo - optic effect of pmma is discussed by result of thermo - optic effect experiment. nonlocalized interference theory is deduced from nonlocalized interference definition, and the experiment of nonlocalized interference influenced by thermo - optic effect of c60 doped polymer film is performed. the research show that c60 doped pmma is physical blend, do not influence their form

實驗中採用pmma （聚甲基丙烯酸甲酯）作為摻雜載體材料，通過傅立葉紅外光譜技術，對c _ （ 60 ）與摻雜材料的結合性能及其存在形態進行了分析；由熱光特性實驗結果探討了c _ （ 60 ）對有機材料pmma熱折變影響的機理；根據不定位干涉定義對其進行了理論推導，並做了摻c _ （ 60 ）有機薄膜熱光特性對不定位干涉作用的實驗。

Pmma. plastics - poly methyl methacrylate moulding and extrusion materials - designation

塑料.聚甲基丙烯酸甲酯

Besides, it was founded that the compatible of the system consisted of mts - mma copolymer and pmma was better than that of pmts / pmma

應用dma ， dsc ， uv及水滴接觸角等測試手段表徵了有機硅聚合物-聚甲基丙烯酸酯梯度膜的性能。

To prepare the functionally gradient materials ( fgm ) of polysilane - polyacrylate, the method of solution preparation was performed. based on the results of the back - scattered electron images and linear scanning of the polysilane - polyacrylate film ' s cross section, the dependence of polysilane - polyacrylate film ' s structure on molecules of polysilane and polyacrylate, pmma / pmts feed ratio and component concentration were investigated

通過測試有機硅聚合物-聚甲基丙烯酸酯樹脂膜的結構，分析了聚有機硅（ pmts ） 、聚甲基丙烯酸酯（ pmma ）的分子量、 pmma pmts體系配比、組分濃度等因素對有機硅聚合物-聚甲基丙烯酸酯樹脂膜結構的影響。

Stuctrures of nano - powders were studied with xrd, ftir, and tg - dsc. laser scattering granularity instrument described that nano - ito was dispersed in ethanol about average 50nm, configurations of nano - composites was studied with sem, which described that inorganic nanoparticles can disperse in pmma with nano - level

本文在乙醇/水溶液中採用sol - gel法制備被乙醇包裹的納米二氧化錫， ；通過膠溶法，制備ito膠體，利用乙醇/水的共沸，用乙醇替換水，從而使乙醇隔離納米ito粒子，達到初級分散的效果。

Preparation and characterization of mc pmma core - shell composite latex particles

殼復合膠粒的制備與表徵

The mechanical modifying equipment was used to prepare compounded micro - spheres from pmma particles and ps particles with metal particles and tio2 nano - particles. the sem was used to observe the images of particles and x - ray photoelectron spectroscopy ( xps ) is used to obtain surface spectrum. herein the tio2 nano - particles can be dispersed on larger polymer particles and their surface morphology is different by using different polymer particles

使用掃描電鏡和光電子能譜對制得的復合微粒子進行表徵，發現該方法可以使納米tio _ 2粒子呈很好的分散狀態復合在聚合物微球及金屬粒子上，而且隨著聚合物微球原料的不同，納米tio _ 2粒子能在高聚物的表面的復合狀態也不同。