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Effect of Mineral Composite Fillers on Properties of Man-made Plywood Hongxia Shaoa, Qingguo Tangb, Jinsheng Liang and Yan Ding Institute of Power Source and Ecomaterials Science, Hebei University of Technology, Tianjin, China ashxyao123@163.com, bqingguo_tang@163.com Keywords: plywood, urea formaldehyde resin, attapulgite, free formaldehyde, bonding strength Abstract.
Attapulgite mineral powder as raw material, through surface modification and composite of various mineral processing, the effect of modifier dosage, composite powder filler ratio on the mechanical properties and formaldehyde emission of the plywood which is bonded by filled urea-formaldehyde resin were investigated.
Cem [4] studied the influence of borax pentahydrate on the properties of the Urea-formaldehyde.
Results and Discussion 3.1 Changes of synthetic adhesive viscosity The changes of synthetic adhesive will affect its solidification property.
Effects of flour, talcum powder, kaplin, attapulgite, different modified attapulgite, modified composite mineral filler and other powder filler on the properties of the plywood are shown in Table 1.

The effect of temperature on the mechanical properties of the samples after sintering is significant.
The formation of a large number of sintered necks should be developed to determine its mechanical properties.
In the sintering process includes three stages, grain growth stage, grain boundary expansion stage, pore change stage, the main factors affecting the sintering temperature and holding time, sometimes the sintering atmosphere will also affect the microstructure of the ceramic in the process.
The effect of temperature on the mechanical properties of the samples after sintering was significant.
Jiang, Unique mechanical properties of nano-grained YAG transparent ceramics compared with coarse-grained partners, Mater.

It is known from the experimental and analytical results that different chemical environments such as chemical composition, pH value etc can affect the mechanical property of rock differently.
Introduction Research on rock mechanical property under chemical corrosion is one of the most basic subjects in nucleus wastes treatment, geothermy development, petroleum drilling, earthquake mechanism, storage of toxic harmful materials and estimation of long term stability of rock and soil engineering.
Research results have indicated that chemical solutions are important factors in terms of effects on the deformation and strength of rock [1-5].
Analysis of Mechanical Properties of Limestone Eroded by Chemical Solutions The effect of chemical corrosion on the mechanical property of limestone can be analyzed from four stages of the stress-strain curves (Figure 1)
[8] Y.S.Touloukian, W.R.Judd, R.F.Roy.Physical properties of rocks and minerals.

The SEA result was compared with the modal solution, and the properties and influencing factors of vibratory energy transmitted through rolling bearings were analyzed furtherly.
The SEA result was compared with the modal solution, and the properties and influencing factors of vibratory energy transmitted through bearings were analyzed.
Mechanical Model θb Mb Fr sr Fig.1 Mechanical properties of rolling bearing Mechanical Properties of Rolling Bearings.
Because axial force has little influence here, the mechanical properties of the rolling bearing can be expressed as
large stiffness small stiffness Power flow (w) Frequency (Hz) Frequency (Hz) Power flow (w) symmetric structure asymmetric structure Fig. 10 Power flow of different stiffnesses Fig. 11 The effect of the gear installation position on power flow Analysis of transmission properties and influencing factors of the vibratory energy By assuming two of the three bearing stiffnesses, i.e. kbrr, kbqq and kbrq, fixed, and letting the third one increase or decrease by same ratio, changes of Ptr are investigated in Fig. 9.

Suppose that there are n factors that affect the structural failure, then the matrix (n×3) which is composed of the sensitivity vector of the n factors is called the sensitivity matrix affecting the structural failure.
Negative sign has opposite effect. δi reflects the relative changes between the factors.
The experimental and statistical data of the mechanical properties of materials indicates that the shear strength [τ] and allowable deformation [λ] of materials also obey normal distribution.
xi(i=1, 2, …, n), and range the factors affecting the structural reliability sensitivity.
Conclusions In this paper the reliability sensitivity of the cylindrical helical spring was analyzed with the variation coefficient method, the sensitivity of various factors affecting spring failure was also calculated.

Coral has been used as a bone replacement material because the structures resemble bone and have mechanical bone properties.
Porous coral structures resemble bone and have mechanical bone properties.
Besides that, the electrical natural in gelatin will also produce electrostatic bonds with growth factors [14].
The main component of the scaffold is where the extracellular matrix, cells and growth factors interact to form a tissue.
Borbas, Properties of calcium carbonate-containing composite scaffolds, Acta Bioeng.

Ni-based superalloy single-crystal turbine blades are widely used in gas turbines for aircraft propulsion and power generation as they can be subjected to high service temperature and show high mechanical properties due to the almost total elimination of grain boundaries.
It is of fundamental importance analyzing the physical mechanisms of formation of stray grains, to understand which thermo-physical and geometrical factors highly influence their formation and to find possible ways to reduce the impact of the problem.
The study allows to derive the preferred locations of stray grains formation and the role played by the most affecting factors: (i) geometrical: angle of primary grain dendrites with withdrawal direction and orientation of the primary grain with respect to the side walls, responsible for the formation of volumes where the stray grain undercooling is lower than the undercooling of the columnar dendrite tip; (ii) process and alloy: thermal gradient ahead to the solidification front and alloy composition, influencing the columnar dendrite tip undercooling; (iii) wettability of foreign substrates, on which the stray grain undercooling strongly depends.
Because of the adverse effects of high angle grain boundaries on mechanical properties, the presence of these unacceptable defects in single crystal components causes a significant decrease in the mechanical properties of the component.
A relevant factor is the β angle between the wall and the local tangent to the liquidus isotherm.

Influencing factors of 1Cr13 SSCC for oil & gas wellhead Pei Junfeng 1,2 Zhang Guixin1 Yin Shunshi 3 Deng Xuefeng3 (1 College of Mechanical and Energy Engineering, Jiangsu Polytechnic University, Changzhou 213016, P.R.
With the applications of 1Cr13 steel in oil & gas wellhead, it is urgent to research hydrogen sulfide stress corrosion cracking (SSCC) properties in high-strength under the simulation condition of production.
Constant load tensile test was carried out in the laboratory in order to better understand the properties of materials to reduce stress corrosion cracking accidents and choose the better material to prevent the occurrence of hydrogen sulfide stress corrosion.
Environmental factors which impact the hydrogen sulfide stress corrosion test.
In the hydrogen sulfide stress corrosion tests, stress corrosion affected by a variety of environmental factors, such as hydrogen sulfide, temperature, pH, chlorine ion concentration and so on [6~9] ，in which hydrogen sulfide has played a very crucial role in hydrogen sulfide stress corrosion test.

Besides, the tribological properties of carbon fiber epoxy resin composites are mainly affected by ploughing of surface roughness at low temperature, while by surface debonding at high temperature.
Under the influence of heat, force and other environmental factors in space, the contact surface of the roller and guide rail pair in the pulley will produce thermal deformation and elastic deformation, which will lead to the change of matching clearance and friction of the roller and guide tribo-pair.
(3) The tribological properties of the "polyimide & carbon fiber epoxy resin composites" pair is mainly affected by the plowing effect of rough surface at 30 ℃.
Mechanical development of antenna systems.
Tribological properties of polyimide-modified UHMWPE for bushing materials of seawater lubricated sliding bearings.

Properties of Aluminum A356 and Al2O3 increased physical and mechanical properties of aluminum composite such as good wear resistance, low thermal coefficient, corrosion resistance, resistance to creep at high temperatures, and better fatigue resistance [2].
The interface bonding between the matrix and reinforcement are important factors that can affect the mechanical properties of the composite.
The presence of AlSi9 decreased ductility of Al2O3 and decreased mechanical properties of the composite [13].
Zebarjad, Influence of Nano Size Al2O3 Weight Percent on the Microstructure and Mechanical Properties of Al-Matrix Nanocomposite, Powder Metallurgy 8 (2010) 71–78
Muhammad, Mechanical Properties of Nano SiC-Reinforced Aluminum A356 with Sr Modifier Fabricated by Stir Casting Method, Procedia Engineering 216 (2017) 43-50