نتایج جستجو برای: آنالیز dmta
تعداد نتایج: 41302 فیلتر نتایج به سال:
Thermoplastic poly(urethane-siloxane)/organoclay nanocomposites (TPU NCs) with different hard segment content (20?55 wt. %) were prepared by in situ polymerization the presence of organically modified montmorillonite as a nanofiller (Cloisite 30B; 1 %). Hydroxyl-terminated ethoxypropyl- poly(dimethylsiloxane) was used soft segment, while 4,4'-methylenediphenyl diisocyanate and 1,4-butanediol co...
Curing-induced internal stresses in epoxy coatings are highly influenced by the type and concentration of product ingredients conditions applied. In this work, effects on curing-dependent modulus stress development epoxy/crosslinker chemistry, curing temperature, relative humidity, filler conditions, initial solvent concentration, studied. Analytical methods include attenuated total reflection-...
Years of studies have already highlighted the complex combination, in moose feeding ecology, a marked selectivity coupled with significant dietary adaptability toward changes local resource availability. Dental textures resulting from masticatory movements and properties ingested food items constitute link between animal, its ecology environment it occupies. This approach is efficient to deciph...
ABSTRACT Dental microwear texture analysis (DMTA) is widely used for diet inferences in extant and extinct vertebrates. Often, a reference tooth position analysed specimens, while isolated teeth are lumped together fossil datasets. It therefore important to test whether dental (DMT) specific and, if so, what causes the differences wear. Here, we present results from controlled feeding experimen...
Diethyl l-tartrate (DET) is used as a biobased plasticizer for poly(lactide) (PLA) formulations with improved ductile properties without compromising biodegradation. Different weight percentages (wt.%) of DET in the 0–50 wt.% range are added to PLA by melt compounding and subsequently processed injection molding. The effect on mechanical, thermal, thermo-mechanical, morphology, biodegradation, ...
This study aims to understand the role of storage conditions (temperature, T and moisture content) in reactions involved cation-pectin-phytate hypothesis, postulated cause Hard-to-cook (HTC) defect beans as influenced by plasticizing effect (glass transition (Tg) concept). The enzyme catalysed reactions, demethylesterification pectin hydrolysis phytic acid, were monitored respectively simplifie...
Abstract This paper discusses the influence of process parameters on degradation and mechanical properties laser-sintered polylactide (PLA) microspheres obtained using novel dual beam laser sintering method (DBLS). DBLS is a technique developed by our team that modification standard polymer (pLS), with potential to reduce during process. The PLA were produced emulsion-solvent evaporation method...
در این تحقیق اثر یک بهبود دهنده چسبندگی سیلیکونی بر روی چسبندگی رزین اپوکسی با سخت کننده آمینو سیلیکونی بررسی شده است. برای این منظور N -2 آمینو اتیل3 آمینو پروپیل تریمتوکسی سیلان به عنوان افزودنی در فرمولاسیون لاک اپوکسی وارد شده و اثر آن با بهرهگیری از فرآیند سل ژل بر خواص نهایی روکش مورد بررسی قرار گرفت. آزمونهای چسبندگی، سختی ویکرز، کشش و آزمون مکانیکی ـ گرمایی (DMTA ) نشاندهنده افزایش ...
In this study, the physical, morphological, mechanical and thermal properties of furfuryl alcohol/2-ethylhexyl methacrylate/halloysite nanoclay wood polymer nanocomposites (FA-co-EHMA-HNC WPNCs) were investigated. FA-co-EHMA-HNC WPNCs were prepared via an impregnation method and the properties of the nanocomposites were characterized through the weight percent gain, Fourier transform infrared (...
دراین تحقیق،کامپوزیت های پلی آمید6/ پلی پروپیلن به نسبت 75.25 در حضور سازگار کننده ی پلی پروپیلن گرافت شده با مالئیک انیدرید (pp-g-ma) به روش اختلاط مذاب تهیه شده و تأثیر افزوده شدن دو نوع تقویت کننده، نانو لوله های کربنی چند دیواره (mwcnt) و دوده (cb) روی آنها بررسی شده است. دوده استفاده شده در این پژوهش نوع خاصی از دوده با سطح ویژه بسیار بالا می باشد. برای این منظور برای تقویت کننده ها سه مقد...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید