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When DMPA dosage is low, the tensile strength and elongation of polyurethane is relatively low because in this condition the size of emulsion particle is very large resulting in uneven film and poor mechanical strength.
By tracing the content of –NCO groups, and comparing the properties of the WPU emultion such as the appearance, viscosity, stability, and film-forming ability, the optimal chain-extending reaction process parameters were determined.
In the reaction process, the amount of diethylenetriamine determines the size of the molecular weight of polyurethane, meanwhile the molecular weight affects the emulsification quality of polyurethane.
From Table 3, we can know that the water-soluble and the finishing effect is a pair of contradictions, by combination of all factors we choose the dosage of diethylenetriamine for 1.5 %, and epichlorohydrin for 2.7 %.

In addition to metal loads, working media also affect, and in aggregate they can change the properties of the material: hardness, electrode potential value, strength, plasticity and surface energy [5, 7].
As a working tool, a multiple regression procedure was chosen to produce a model in the form of a nonlinear combination of influencing factors.
Gareev, Destruction patterns of X70 steel sample, possessing cracks of corrosion-mechanical origin, under cyclic loading, Materials Science Forum. 946 (2019) 20-24

The mechanical properties of geopolymer concrete will not be significantly reduced at high temperatures [9].
The force is the stiffness force Fs which is affected by the displacement x [25].
Displacement occurs at each level of the building as a result of the forces that affect it.
Friedlingstein et al: Update on CO2 Emissions (Nature Geoscience vol 3) p 811 – 812 (2010) [5] McLellan B C et al: Costs and carbon emissions for Geopolymer pastes in comparison to Ordinary Portland Cement (Journal of Cleaner Production vol 19) (Japan: Elsevier) issue 9-10 p 1080 – 1090 (2011) [6] Divya Khale & Rubina Chaudhary: Mechanism of geopolymerization and factors influencing its development: a review (Journal of Materials Science vol 42) p 729 – 746 (2007) [7] Panjehpour M et al: A Review for Characterization of Silica Fume and Its Effects on Concrete Properties (International Journal of Sustainable Construction Engineering & Technology vol 2) (Malaysia: Universiti Tun Hussein Onn Malaysia (UTHM) and Concrete Society of Malaysia (CSM)) issue 2 p 1 – 7 (2011) [8] G.
Zhao, Properties of concrete incorporating fly ash and ground granulated blast furnace slag, Cement Concrete Research, pp.293–299 (2003) [9] R.

The glass steel wood bar -- excellent surface properties, steel and wood structure bar it is far superior in elasticity, toughness and resilience of traditional.
The main reason is that the mechanical properties of the rod.
Canoeing and water resistance are the decisive factors for canoeing speed.
The Main Properties of Material Used in Sports Equipment Plastic and high-tech composite is materials.
Composite material is called more than two special material properties of different materials, which overcomes the weakness of a single material.

Polyphenylene sulfide (PPS) fiber is a new type of fiber having good thermal stability, chemical resistance, and excellent physical and mechanical properties [14].
The typical properties of fiber.
The removal of an anionic red dye from aqueous solutions using chitosan beads—The role of experimental factors on adsorption using a full factorial udesign,Journal of Hazardous Materials, 160(2008):337-343
Adsorption properties of anion ion-exchange fiber for reactive dyes, Journal of Functional Materials,36(2005):1568-1571
Synthesis, structure and properties of new fibrous ion exchangers,Reactive Polymers, Ion Exchangers, Sorbents, 7(1988):159-172

Nanoparticles have unique properties, including biological effects.
Materials down to Nano-sizes exhibit many unusual thermal, mechanical, electrical, chemical and electrochemical properties compared to traditional polycrystalline or amorphous materials.
There are factors affecting the process of manufacturing colloidal nanoparticles by pulsed laser ablation in a liquid environment (including the liquid environment, laser beam focal length, laser wavelength, laser transmittance, laser pulse duration, laser shot number, ablation time, and laser pulse repetition rate) and how to control these parameters to prepare metal nanoparticles and metal oxides [5].
To study the optical properties, UV-Vis measurement was used.
-Y., et al., Nanowires properties and applications: a review study.

The quality and effectiveness of metal manufacturing processes is strongly dependent on methods, resources and parameters, by which the work piece properties change from original to desirable.
The experimental design is widely used to optimize process parameter values in order to improve the quality properties of a product [15].
Fig. 2 Taguchi´s flow chart Four control factors selected for the investigation are: cutting speed (vc), feed (f), helical angle (ls) and a cutting fluid.
Four factors and three levels for each factor led to performing nine experiments according to the L9 Taguchi orthogonal array.
Characteristic for this alloy is the medium strength of 310 N/mm², the good machinability and weldability as well as the excellent corrosion properties.

The parts are made of Cu-Cr alloy, the physical property is decided by the content of alloys, and the mechanical property is mainly decided by physical dimensions of self-elastic contacts which include section thickness, corner radius and middle groove width.
Material Properties of the contact were inputted in ANSYS Workbench interface, including young’s modulus E = 1.38 GPa, Poisson ratio υ = 0.32, yield stress σs = 430 MPa, shear stress τ = 295MPa.
The mechanical model is showed in Fig. 1.
Microstructure, hardness and electrical properties of silver-based refractory contact materials.
Properties of vacuum cast CuCr25 and CuCr25Te contact material.

But facing to the high-strength rock, due to the limitation of factors such as machine weight and adhesion coefficient, it can not make full use of bulldozer’s strong traction force and engine power.
And it’s mainly used to determine the natural frequencies and vibration modes of mechanical structure and components.
Material Properties Material properties refer to some of the unique properties of materials such an elastic modulus, Poisson, density and so on.
The allowable stress is 230MPa when 1.5 is adopted as the safety factor.
Mechanical Research & Application.

The effectiveness of shot peening depends on various factors such as peening material, time, and intensity, as well as the shot abrasive material, size, and hardness, and the type of shot peening machine used [3]. 2) Properties of Carbon Steel Carbon steels, categorized by carbon content, exhibit various mechanical properties suitable for various applications.
The mechanical properties of carbon steels can be significantly modified through heat treatments like annealing, quenching, and tempering.
The mechanical properties of carbon steel can be improved by adjusting the heat treatment method, the content of alloying elements, and the size and shape of the material.
"Effect of tempering temperature on mechanical properties of medium carbon steel",  International Journal of Engineering Trends and Technology, 9(15) (2014) 798-800
Rabiu, “Evaluation of Mechanical Properties of Medium Carbon Steel Quenched in Water and Oil”, Journal of Minerals and Materials Characterization and Engineering, (2012) pp.859-862