搜索结果: 1-15 共查到“工学 thermal stability”相关记录23条 . 查询时间(0.109 秒)
Thermal Stability of Abietic Acid and Its Oxidation Products
Abietic Acid Thermal Stability Its Oxidation Products
2024/1/10
The thermal oxidation characteristics of abietic acid were investigated through tracing the oxidation process in custom-designed mini closed pressure vessel test under isothermal and step temperature ...
A facile strategy to construct multifunctional microencapsulated urea ammonium polyphosphate for epoxy resins towards satisfied fire safety, thermal stability and compatibility
epoxy resin fire safety mechanical properties microencapsulation urea ammonium polyphosphate
2023/11/16
Enhancing the fire safety of epoxy resin (EP) concomitant with less mechanical performance degradation is still a challenge for traditional flame retardants. Hence, polypyrrole (PPy) was used as a fil...
Preparation of fluorinated epoxy-phthalonitrile resins with excellent thermal stability and low dielectric constant
curing behavior fluorinated epoxy-phthalonitrile resins low dielectric constant thermal stability
2023/11/16
Fluoropolymers find applications in heat-resistant cables, chemical-resistant linings, electronic components, cladding materials, and weather-resistant films. Therefore, it is imperative to improve th...
Engineering Lignocellulose Fibers with Higher Thermal Stability through Natural Fiber Welding
ionic liquids lignocellulose nanocellulose natural fiber welding silane thermal stability
2024/3/12
This study reveals how natural fiber welding (NFW) can be used to engineer biopolymer materials with improved thermal stability. First, it is shown how NFW without binders improves lignocellulose yarn...
Effect of extrusion treatment on the thermal stability and structure of corn starch with different emulsifiers
crystallinity modified starches extrudate complexes
2015/10/9
Corn starch was treated with raw moisture (30%), screw speed (160 rpm), extrusion temperature (30, 55, 80, 105, 130, and 155°C), and emulsifier (1.2%) to produce the starch extrudate particles in a tw...
pH and thermal stability of anthocyanin-based optimised extracts of Romanian red onion cultivars
Allium cepa L. phenolics anthocyanins pH differential Differential Scanning Calorimetry
2014/2/24
Total phenolics and anthocyanins in ten samples of Romanian red onion cultivars, extraction optimisation and pH/thermal stability were investigated. Extraction with 80% aqueous ethanol leads to an inc...
Thermal stability of functional properties in dispersion and precipitation hardened selected copper alloys
Nanomaterials Functional materials Metallography
2009/12/2
Purpose: The objective of the study was to produce copper-based dispersion hardened materials of submicron
grain size, determination of their basic functional properties and stability in high tempera...
Thermal Stability of Hydroxylapatite-Titanium and Hydroxylapatite- Titania Composites
Hydroxylapatite titanium biomaterials implants interface
2009/10/12
The aim of the current study is to investigate the reaction of hydroxylapatite with both metallic titanium and titanium oxide, and to examine the e ect of atmosphere on these reactions. For this purpo...
Electron microscopy studies of the thermal stability of gold nanoparticle arrays
thermal stability gold nanoparticle arrays
2009/7/28
A series of monolayer protected gold nanoparticlecolloidal solutions have been prepared with averagesizes in the 2-15nm range. If a drop of such acolloidal suspension is deposited onto a Si3N4substrat...
Differences in Thermal Stability of Glucosinolates in Five Brassica Vegetables
food matrix phytochemicals processing degradation
2014/3/10
The thermal stability of individual glucosinolates within five different Brassica vegetables was studied at 100°C for different incubation times up to 120 minutes. Three vegetables that were used in t...
Microstructure evolution and thermal stability ofnanocrystalline Cu-Nb alloys during heat treatment
Cu-Nb alloy mechanical alloying nanostructured material microstructure thermal stability
2010/3/17
The microstructure evolution and high thermal stability of the mechanically-alloyed supersaturated nanocrystalline Cu-10%Nb alloy during subsequent heat treatment were investigated by X-ray diffractom...
Thermal stability of properties in silver – rare earth metals alloys
Metallic alloys Functional materials Metallography
2010/2/4
Purpose: The objective of this work was to investigate the changes taking place in the structure and properties of Ag-La (0.5%) and Ag-mishmetal (1 and 4%) alloys caused by severe plastic deformation ...
Improvement of the Thermal Stability of a Calcium-free, Alkaline α-Amylase by Site-directed Mutagenesis
Bacillus alkaliphile α-amylase thermostability site-directed mutagenesis
2008/4/20
Alkaline α-amylase from Bacillus sp. strain KSM-K38 (AmyK38) is a calcium-free enzyme that is stable against chelating and oxidative reagents. Recently, the thermostability of this enzyme was improved...
Enhancing the Thermal Stability of Sucrose Phosphorylase from Streptococcus mutans by Random Mutagenesis
sucrose phosphorylase Streptococcus mutans random mutagenesis thermostable enzyme
2008/4/20
The thermal stability of sucrose phosphorylase (EC 2.4.1.7) from Streptococcus mutans was enhanced using random and site-directed mutageneses. Random mutagenesis studies revealed that eight single ami...
Thermal Stability of Whey Protein Concentrate Mixtures: Aggregate Formation
calcium casein electron microscopy whey protein concentrate
2008/3/27
Solutions (17% TS) of whey protein concentrate (65% protein) were dialyzed against simulated milk ultrafiltrate containing 0 to 9 mM total Ca2+. The dialyzed solutions were heated at 66 or 71°C for 12...