礦化度 degree of mineralization; extent of mineralization; mineral content; mineral salt concentration , mineralization; mineral salt concentration , mineralization; salinity
Numerical simulations on the relationship between polymer blend microstructure parameter and crazing 聚合物基復(fù)合材料模壓成型過(guò)程固化度與非穩(wěn)態(tài)溫度場(chǎng)的數(shù)值模擬
As a result of the latest formula , the company s production profile pultruded grp epoxy curing is very good , completely overcome " any involvement " phenomenon 由于采用了最新的工藝配方,我公司生產(chǎn)的環(huán)氧拉擠玻璃鋼異型材固化度非常好,完全克服了“沾手”現(xiàn)象。
It was investigated that how content and dispersion of different pigment , degree of curing and glass transference temperature of coating affect pigment resistance transference of uv curing optical fiber coding inks 研究了顏料的自身性能如種類、含量和分散狀態(tài),涂膜的物理性能如固化度和玻璃化溫度對(duì)顏料耐遷移性的影響。
For a specified compaction and temperature cure cycle , the model was used to predict the resin flow front , the pr essure distribution and temperature profile of the assembly , which can be used to optimize the rfi process 通過(guò)對(duì)不同工藝參數(shù)(壓力制度、溫度制度等)下成型過(guò)程的模擬,分析預(yù)測(cè)了樹(shù)脂流動(dòng)行為、前沿位置和充模時(shí)間;制品和模具內(nèi)的溫度分布以及樹(shù)脂粘度和固化度的變化。
The curing dynamic parameters of epoxy resin / org - mmt / mz nanocomposites were obtained by the modified avrami expression and autocatalytic expression . the curing energy of epoxy resin / org - mmt / toa systems with different degrees of curing were obtained by flynn - wall - ozawa method 同時(shí)還利用了flynn - wall - ozawa方法求出環(huán)氧樹(shù)脂桐油酸酐蒙脫土固化體系隨著反應(yīng)的進(jìn)行不同固化度時(shí)對(duì)應(yīng)的瞬間表觀活化能。
The formulation for the flow model is given using the finite element / control volume ( fe / cv ) technique based on darcy ' s law of creeping flow through a porous media . the heat transfer model is based on the two - dimensional , transient heat conduction equation , including heat generation . the cure kinetics model is based on kamal ' s model , and the degree of the resin cure as a function of temperature and time 樹(shù)脂流動(dòng)階段的模擬是根據(jù)牛頓流體在多孔介質(zhì)中的滲流理論,應(yīng)用darcy定律并使用有限元/控制體技術(shù)建立起來(lái)的;熱傳遞模型是一個(gè)二維瞬態(tài)熱傳導(dǎo)方程,考慮樹(shù)脂反應(yīng)放熱;樹(shù)脂的固化模型利用了kamal提出的固化動(dòng)力學(xué)方程,將固化度取為時(shí)間和溫度的函數(shù)。
Firstly , a finite element approach combining the temperature parametric method with real fictitious elements scheme was proposed for simulating the winding tension process ; secondly , in accordance with the cure kinetic and heat transfer theory , a corresponding finite element method was employed to calculate the distributions of temperature , cure degree and thermal stress fields during the cure process 根據(jù)固化反應(yīng)動(dòng)力學(xué)理論和熱傳導(dǎo)理論,對(duì)具有金屬內(nèi)襯的復(fù)合材料纖維纏繞壓力容器在固化工藝過(guò)程中瞬態(tài)溫度、固化度和熱應(yīng)力場(chǎng)分布及其變化規(guī)律進(jìn)行了數(shù)值分析。
The physicochemical characterization was made in depth using various techniques for some resin matrices of advanced composites , such as epoxy resin matrix , phenolic resin matrix and bismaleimide resin . these techniques include infrared spectroscopy ( ir ) , nuclear magnetic resonance spectroscopy ( nmr ) , mass spectroscopy ( ms ) , liquid chromatography ( lc ) , thermal analysis ( ta ) and other techniques . the composition , structure , molecular weight , reactivity , reaction temperature and other properties related to performance of resin matrix were studied 本論文采用紅外光譜、核磁共振波譜、質(zhì)譜、液相色譜、熱分析等分析技術(shù)對(duì)實(shí)際使用的環(huán)氧樹(shù)脂、酚醛樹(shù)脂以及改性雙馬來(lái)酰亞胺樹(shù)脂等先進(jìn)復(fù)合材料樹(shù)脂基體進(jìn)行了物理化學(xué)表征,尤其是對(duì)與樹(shù)脂基體性能密切相關(guān)的化學(xué)組成與結(jié)構(gòu)、分子量、活性與反應(yīng)溫度、固化度等進(jìn)行了表征;提出了樹(shù)脂基體的固化反應(yīng)機(jī)理,獲得了樹(shù)脂基體的固化反應(yīng)動(dòng)力學(xué)參數(shù);對(duì)改性雙馬來(lái)酰亞胺樹(shù)脂的熱分解機(jī)理進(jìn)行了分析,并得到了其熱分解動(dòng)力學(xué)數(shù)據(jù)。