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The structure and the influencing factors on the water solubility and photosensitivity of the waterbrone UV-curable polyurethane acrylate were analyzed.
consistent with the theoretical structure. 2.2 The Influencing Factors on the Hydrophilicity of WPUA Resin.
The affecting factors of the hydrophilic property of WPUA resin include the content of hydrophilic group and the degree of neutralization.
The hydrophilic property of resin is mainly affected by the content of hydrophilic groups in the system.
Synthesis and Photographic Properties of UV-curable Water-soluble Polyester Acrylate[J].

When calculating the cutting force upon different milling methods (Fig. 2a), it is necessary to take account of components affecting the tangent of the cutting force.
The cutter’s material was the medium-alloy tool steels 8Cr6NiWTi steel and the heat treatment method is annealing, the alloy composition and mechanical properties of cutting tool material: Table 2.
Mechanical properties of cutting tool material C Si Mn Ni S P Cr V Ti Cu 0.8-0.9 0.1-0.4 0.15-0.45 0.9-1.3 ≤0.03 ≤0.03 5-6 0.3-0.5 0.05-0.15 ≤0. 3 The processed materials were tropical woods with dimensions as follows: length of wood samples lw = 1000mm, width b = 20 ... 22mm.
The mechanical properties of machining tropical woods in the experiment were chukrasia and magnolia Table 3.
In the interactions affecting the specific work, the coefficient b13, considering the impact of the tooltip’s radius r and the feed per tooth Sz, is the largest.

The quality of air condition is one of the major factors affecting the health of people living in urban areas.
In order to include the pollutant, species transport is switched on to define the air-carbon monoxide mixture properties.
The emission factor of CO is given by Taneeb [6] was used in this calculation.
This trend can be explained in term of turbulent intensity where the wind speed affecting the vortex strength causing the increment in the vertical mean velocity which improve the transportation of pollutants to the roof level.
Street canyon’s length may be one of the factors that influence study of street canyon in 3-D modelling.

The effects of the double combination box girder segment of the negative moment area structure stress properties.
Introduction Steel - concrete composite box girder structure, because of its excellent structure, reasonable layout, give full play to the mechanical properties of the steel tensile strength and compressive strength of concrete [1-2].
With the conduct and in-depth study of bridge construction, composite box girder negative moment area of the mechanical properties of the problem and stability [3], has become a key factor restricting the development of the large-span direction.
Therefore, when you investigate the effect of a combination of cross-section of the double negative moment area of the mechanical properties were compared under different additional thickness of the concrete floor, the lower flange on the bottom plate of concrete compressive stress sharing role and top concrete slab tensile stress lowering effect.
The discussion of the rationality of filling thickness must also be taken into account for the structural properties play an important role in the stability problems.

The second significant effect of an increased hygrothermal condition is the degradation of the mechanical properties of a PMC ply.
It is observed from various studies that the exposure to high moisture and temperature do not significantly affect the fiber related properties, but, the matrix properties get affected considerably.
The stiffness properties of the constituents are degraded.
It is assumed that only matrix properties are affected by temperature change and moisture content.
Chamis, Simplified Composite Micromechanics Equations for Hygral, Thermal and Mechanical Properties, Houston, TX, 1-10, 1983

As one of the important factors during cutting process, whether the tool selection is reasonable will not only affect production efficiency of machine center, but also the machining quality of the product.
There are many factors which influence the result of tool selection, and these factors have different influence degree to tool selection, so qualitative analysis must be done to the grey correlation among these factors and that of these factors to selection result.
With different processing properties, the influence degrees of tool geometrical angles are different.
Establish a database to store the numerical values which are obtained according to the size of influence factors and processing properties to present the influence degree of influence factors.
The system will select appropriate tool set from tool database of enterprise according to the workpiece material properties and the information of machine tool and processing.

An orthogonal test with three sets of level factors and three parameters is conducted to obtain the optimal forming parameters.
The mechanical properties of the material were determined by conducting tensile test as shown in Table 1.
Mechanical properties of aluminum and steel Property item Property value Modulus of elasticity E (×108N/m2) Posson’s ratio ν Density ρ (g/m3) 1000 0.33 2.7 100000 0.3 7.8 Aluminum Steel Orthogonal Experiments According to the previous researches, the three important parameters identified for total equivalent plastic strain after molding are stamping force, fillet radius, and friction coefficient.
Three sets of level factors were chosen and given in Table 2.
The mechanical analysis was carried out to analyze the key factors such as fillet radius, stamping velocity and friction coefficient.

In this field, there is great concern regarding the long term behavior of the rehabilitated structures for outdoor applications, where environmental factors can bring about severe deterioration in particular in the glass transition temperatures (Tg).
The results of the DMTA tests in Fig. 2 indicate an appreciable improvement in the mechanical properties of the hybrid system compared to those of the corresponding unmodified or partially modified adhesives.
The flexural mechanical data shown in Table 2 for the different systems examined illustrate the significant enhancement in mechanical properties resulting from the progressive modification of the epoxy resin, up to obtain a hybrid system displaying an appreciable improvement in mechanical properties (around 60% for strength and more than doubled for the stiffness) provided by the efficient reinforcement of the inorganic phase (siloxane domains).
In brackets, the percentage difference in properties compared to those of un-aged specimens is evidenced.
Again, in presence of harsh conditions, the adhesion properties of the hybrid system are less impaired.

Mechanical properties were also measured.
MMt was exfoliated in the matrix after the in-situ polymerization, according to the XRD and TEM, which brought about improved properties of PDCPD with small amount MMt dispersed in the matrix.
So, the improvement in mechanical properties of polymers composites with clays is highly dependent on the degree of clay dispersion.
Some researchers demonstrated that many polymers composites with small amounts of well-exfoliated clay can be effectively improved in mechanical, barrier, and thermal properties, as well as flame resistance [2-5] The compound of DCPD with MMt was also investigated by Mitra Yoonessi research group [6-7].
Fig. 5-a SEM of impact fracture of pure PDCPD Fig. 5-b SEM of impact fracture of PDCPD/MMT Composites While fillers have many factors to affect matrix’s mechanical property, such as the size and distribution of particles, the interface afflicting strength between particles and matrix, and morphology particles have itself.

However, the titanium alloy has the properties of low elastic modulus, high elastic deformation and low thermal conductivity, which reduce the machined surface quality [1-4].
Therefore, the main factors that affect the cutting force are not only the characteristics of the material itself, but also the tool wear, cutting conditions, etc
But as the cutting speed increased further (higher cutting speeds), thermal softening effect is not the single factor which affected cutting force, strength of materials increased resulting in the decrease of cutting forces and the trend became slow.
As shown in Figure 9, tool wear is one of the important factors that affects the cutting temperature.
Mechanical Science and Technology for Aerospace Engineering, 2010, 29(6): 826-831