the flexural strength, flexural modulus, total impact energy per unit area and dynamic flexural strength amount to 81.6 MPa, 6.01 GPa, 37.8 kJ/m 2 and 106 MPa from 23.1 MPa, 1.58 GPa, 30.9 kJ/m 2 and 31.1 MPa.
The mechanical properties of the NF_WPC prepared according to the optimized formula were as follows: flexural strength 58.7 MPa, flexural modulus 3.0 GPa, tensile strength 39.6 MPa, tensile modulus 4.0 GPa and impact strength 12.7 kJ·m~ -2 respectively.
At the optimal process ing conditions of molding temperature 100 ℃,extruding temperature 100 ℃ and m ould chamber length 10 mm, bending strength of PDLLA/MD and PDLLA/HA/MDI composi tes is 51.3 MPa and 55.4 MPa, respectively and their bending modulus is 1 830.9 MPa and 2068.5 MPa, respectively.
The fiber volume fraction of the specimen fabricated by bladder-assisted RTM reaches 61.2%, and the bending strength reaches 280.3MPa, and bending modulus 12.79GPa respectively, which are 23% and 34% higher than those of the specimens fabricated by VARTM.
In this paper, the flexure modulus degradation of UD- Cf/SiC composites was studied in three points bending\fatigue test. There were three steps in the change of the flexure modulus as the fatigue progress going on.
According to the material structure of 3-D braided composites, a method of stiffness combination is proposed to predict material's flexure modulus. We conducted an analysis of 3￣D braided T300/QY9512 composites' flexure modulus with this method.
When the mass fraction of KH-550 is 0.2%,the bend strength,bend modulus,tensile strength,tensile stress and impact strength of GFRMCN are increased by 35%,72%,46%,88% and 41%,compared with those of MC nylon. Glass fibers after surface treatment with KH-550 SCA increase the properties of GFRMCN because of a good interface between GF and nylon.
It indicates that the surface modification can enhance the izod impact strength of PP/Mg(OH)_2 composite material by 0.3 kJ/m~2, the bend modulus about 30%, and the retardant degree is enhanced to V0 from V1. The tensile strength of the composite material surface modified with silane FR693 can be increased 1 MPa.
The incorporation of TLCP improves not only the tensile strength and flexural modulus but also the heat distortion temperature (HDT) of the PBT/TLCP composites.
In the case of injection molding, the flexural modulus increased with an increase in fiber mass fraction, and the mechanical properties decreased with an increase in cylinder temperature due to the thermal degradation of BF.
The influence of the flexible interphase thickness on the flexural modulus and strength are experimentally investigated.
Mechanical properties like tensile strength, Young's modulus, flexural strength, flexural modulus and impact strength of the composites containing untreated and alkali-treated fibres have been studied as a function of fibre loading.
At 52 weeks the shear strength and flexural modulus of the rods were 41% of the initial value, and the flexural strength was 43% of the initial value.
The renormalization can be analyzed if the condition g?1 is satisfied (where g～T/κ, T is the temperature, and κ is the bending modulus).
For small bending deformations, the ratio between the bending modulus and the area compression coefficient, Kb/KA, is proportional to the square of monolayer thickness h.
The NT radii were measured at different values of voltage applied along NT, and the membrane bending modulus was recalculated upon the supposition that the shape of NT deviates from cylindrical only slightly.
In addition, bending tests indicated an increase in breaking stress and bending modulus with starch content and -NCO/-OH molar ratio and decreased breaking strain.
The effects of the span and the radius of the loading nose on the bending modulus and strength were examined systematically.