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Online since: May 2013
Authors: Yang Li, Yang Yang
There are two major factors to consider in this analysis.
These materials give daily chemical products packing necessary mechanical properties, such as flexibility, barrier and sealing, but are less good for elasticity.
Through comprehensive consideration of three factors, making the material with plastic and elastic, adapting to industry production and improving environmental protection, we have selected TPE rubber, also known as Thermoplastic Elastomer / Thermoplastic Rubber.
These required properties include good appearance, soft touch, strong tinting, color uniformity, high insulation, non-toxicity, temperature resistance at -60℃ - 70℃, outstanding barrier, good corrosion resistance (such as to water, acid, alkali, and alcohol solvents), anti-ultraviolet radiation and antioxidant properties, and adjustable hardness.
TPE material can directly replace the traditional PE plastic without affecting production standards or the industry production chain.
Online since: July 2012
Authors: Hong Chen, Jin Liang
Introduction Nanocrystalline materials have attracted great interest because of their unique physical and chemical properties, which are significantly different from their microcrystalline counterparts[1].
During the reaction, the main factors that affect the particle size of cerium oxide are the concentration of cerium nitrate solution, the molar ratio of hexamethylenetetramine to cerium nitrate, the aging way.
Each factor take 4 levels and use orthogonal method to arrange test, factors and levels of orthogonal experiment are shown in Table 1.
Results and discussion Orthogonal experiment results Table 2 Orthogonal test scheme and results No. 1 2 3 4 5 6 7 8 Test scheme A1B1C1 A1B2C2 A1B3C3 A1B4C4 A2B1C2 A2B2C3 A2B3C44 A2B4C1 Transmittance(%) 87.7 83.1 79.5 84.2 83.8 87.4 81.5 85.4 No. 9 10 11 12 13 14 15 16 Test scheme A3B1C3 A3B2C4 A3B3C1 A3B4C2 A4B1C4 A4B2C1 A4B3C2 A4B4C3 Transmittance(%) 57.8 34.3 67.1 78.0 84.2 65.2 54.3 84.6 In the liquid phase reaction process, the main factors that affect the nucleation and growth rate are the concentration of reactants, the nature and composition of the solution, in addition, the use of dispersants, reaction temperature and reaction time, drying temperature and calcination temperature also have a great impact on particle morphology and size.
Here, we propose transmittance as an indicator to examine the effect of three main factors: concentration of reactants, the molar ratio between reactants and different aging way on the particle size, the results are shown in Table 2.
Online since: July 2012
Authors: Nasri A. Hamid, Noor Fairuz Shamsudin
Introduction Fabrication of high-temperature superconductor ceramics with optimum electrical properties and stable mechanical behavior is essential for application in power engineering system such as fault current limiter and energy storage.
Nevertheless the Bi-2212 superconductor, like other high-temperature superconductors has poor mechanical properties such as low stiffness, strength and toughness.
Low strength and low irreversible strain are among the factors that hindered the application of superconductor in power industry.
Furthermore, MgO fibers have been used to reinforce composite materials and they are able to improve the mechanical properties of the compounds [3].
Optimum superconductivity properties with significant enhancement in strength of the Bi-2212 superconductor compound are exhibited in sample with 5% nanosize MgO addition where lower grains orientation of Bi-2212 phase is observed.
Online since: April 2022
Authors: Rui Mao, Yu Xiang Shang, Zhen Kun Lei
However, the reduction of mechanical properties of laminates and the influence of composite materials under various load conditions determine battery safety, energy storage capacity and other electrical properties [8].
These factors are mainly related to the battery embedding method, composite type of and the interface bonding conditions.
Before embedding the carbon fiber laminate, ensure that the outer surface of the battery is clean, and there are no appearance defects affecting the performance and value of the cell, such as scratch, rust, stain, leakage, etc.
Mechanical properties of multifunctional sandwich composites with embedded lithium-ion polymer batteries.
Compression properties of multifunctional CFRP laminates with embedded lithium-ion polymer batteries.
Online since: November 2020
Authors: Isiaka Oluwole Oladele, Joseph Gbenga Akinseye, Baraka Abiodun Makinde-Isola, Olakunle Timothy Betiku
Vegetable fibers properties are influenced by many factors including plant type, growth condition, and method used to extract the fiber [7].
This could produce composite with weak mechanical and physical properties [8].
Some previous studies have shown that hybridization improves some mechanical properties of polymer composites [24, 25].
Zattera, Influence of fiber content on the mechanical and dynamic mechanical properties of glass/ramie polymer composites, Mater.
Akanegbu, Thermo-mechanical properties of unsaturated polyester reinforced with coconut and snail shells,” Int.
Online since: September 2014
Authors: Jun Ji Li
The material and shape of shell are the important factors affecting catalytic converter efficiency and service life.
In addition to these factors, such as catalytic converter design, manufacture and installation method, it associates closely with the engine combustion process and vehicle running condition.
The factors affecting the service life of catalyst are mainly four categories, namely thermal inactivation, chemical poisoning, mechanical damage and catalyst coking.
Generally, lead is added to the gasoline in the form of tetraethyl to increase gasoline antiknock property.
Mechanical damage.
Online since: August 2013
Authors: Yong Sheng Liu, Jian Guo Peng, Jing Hua Zhang, Li Xin Fu
With the affect of overlapping dynamic and static stress field, the calculation formula of the critical inner water pressure in water inflow was presented.
And the blasting disturbance would enhance the stress intensity factor of crack tip.
At the moment, fracture was affected by three loads: blasting load, in-situ stress, and high water pressure.
According to Type (10), and the mechanical properties of water fractural rock mass in Xiamen Xiangan subsea tunnel, parameter values were settled as follows: in-situ stress =0.875Mpa(thickness of the overburden was 34m), side pressure coefficient was 0.7, and =0.4375MPa; poison radio was 0.4 (according to Table 1, =0.943,);length of fracture named a was 0.1m; internal friction angle of fracture named was 30°; attenuation coefficient of stress wave was 1.636 [1]; charge diameter was 0.021m (fully coupled charge), =4.75GPa;fracture toughness of II type fracture in V rock: , and =1.22MPa.m1/2 ( Runqiu Huang[5]).
According to Table 2, blasting dynamic stress field could significantly affect the critic water pressure.
Online since: October 2015
Authors: Xiao Wang, Dong Dong Meng, Yan Wei Wu, Hui Xia Liu, Tao Jiang
Introduction Polyamides (PAs) are an important class of widely used engineering polymers with a number of attractive mechanical and technological properties for joint parts design and manufacturing [1].
Moreover, the effect of thickness, glass fiber and carbon fiber content of PA6 on the optical properties which would determine the efficiency of the transmission joining has been shown by Bates and co-workers [10-12].
Consequently, the researches on laser transmission joining of PAs nowadays are mainly about the joining between similar materials and focused on two aspects: the effects of material properties on the efficiency of the joining, and the effects of material properties and the process parameters on the joint quality.
K is number of factors and ε is error.
It is evident that all the factors play a significant role in determining the joint width value.
Online since: May 2011
Authors: Man Feng Gong, Fang Mei, Guang Zhou Sui
One limit to their performances is serious residual stresses [3], which adversely affect their properties as fatigue, fracture, corrosion, friction and wear resistance [4].
The ultimate residual stress ascribes to two parts influenced factors.
This phenomenon shows that the structure and thermal mismatch is the main influence factors.
The main factors that affect the thermal stress were the structure and thermal mismatch.
Guo: Handbook of utility thermal physical properties, chapter, 21, Beijing: Chinese Agriculture Mechanical Press (1986) (In Chinese)
Online since: December 2015
Authors: Kamal Yusoh, Norazlina Hashim, Kamala Retenam, Santhoshini Somderam
From Table 1, the mechanical properties of semi-crystalline PLA are attractive, especially Young modulus, as PLA is favored for short-term packaging.
The plasticizer also purposely used in the mechanical and thermal properties enhancement.
Commonly, the amount of plasticizers that range from 10 to 20% is required to provide both a substantial reduction of Tg of the PLA matrix, and adequate mechanical properties.
The temperature, molecular weight, and shear rate are the factors in determining rheological properties.
In: Fourteenth symposium on thermophysical properties, 2000
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