scholarly journals Study on Structure and Properties of Polypropylene/Polyamide 6 Blend Fiber. (Part V). The Changes of Structure and Tensile Strength and Elongation Characteristics for the Polypropylene/Polyamide 6 Blend Fibers upon Drawing.

1996 ◽  
Vol 52 (8) ◽  
pp. 396-404 ◽  
Author(s):  
Tetsuya Takahashi ◽  
Atsuo Konda ◽  
Yoshio Shimizu
Keyword(s):  
Tensile Strength ◽  
Polyamide 6 ◽  
Structure And Properties ◽  
Blend Fiber

scholarly journals Influence of Polymer-Silicate Nucleator on the Structure and Properties of Polyamide 6

2020 ◽  
Vol 14 (4) ◽  
pp. 496-503
Author(s):  
Volodymyr Levytskyi ◽  
◽  
Andrii Masyuk ◽  
Diana Katruk ◽  
Rafał Kuzioła ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Crystallite Size ◽  
Softening Point ◽  
Surface Hardness ◽  
Chemical Properties ◽  
Polyamide 6 ◽  
Structure And Properties ◽  
Crystallinity Degree ◽  
Physico Chemical ◽  
Silicate Materials

Physico-chemical properties of developed nickel-containing modified silicate materials as the nucleators for composites based on polyamide 6 are presented. As it was established, additive of the nucleator modified by polyvinylpyrrolidone promotes the increase of crystallinity degree of polyamide 6 and the decrease of crystallite size. It was found that changes in the structure of the material cause the increase of its tensile strength, surface hardness and Vicat softening point.

Effects of molding on property of thermally conductive and electrically insulating polyamide 6–based composite

2018 ◽  
Vol 32 (9) ◽  
pp. 1190-1203 ◽  
Author(s):  
Xuping Yang ◽  
Wenbin Yang ◽  
Jinghui Fan ◽  
Juying Wu ◽  
Kai Zhang
Keyword(s):  
Thermal Conductivity ◽  
Tensile Strength ◽  
Injection Molding ◽  
Annealing Time ◽  
Polyamide 6 ◽  
Molding Pressure ◽  
Hot Press ◽  
Molding Method ◽  
Thermally Conductive ◽  
Press Molding

Thermally conductive and electrically insulating polyamide 6 (PA6) matrix quaternary composites were prepared by hot press molding and injection molding, respectively. The quaternary composites were composed of zero-dimensional aluminum oxide particle, one-dimensional silicon carbide whisker, two-dimensional flake graphite, and PA6 resin matrix. Morphology, structure, density, thermal conductivity, volume electrical resistivity, and tensile strength of two types of composites were characterized by scanning electron microscopy, X-ray diffractometer, thermal conductivity tester, high resistance micro-current tester, and tensile tester. The results showed that crystallinity, thermal conductivity, density, and tensile strength of hot press molding samples were superior to those of samples made by injection molding method. This is due to that hot press molding method can provide higher molding pressure and longer annealing time than injection molding. The mechanism could be explained that the performances of the composites were promoted by increasing molding pressure and annealing time.

Abrasion Properties of Polypropylene/Polyamide 6 Blend Fiber

2006 ◽  
Vol 52 (3) ◽  
pp. 99-106 ◽  
Author(s):  
Tetsuya TAKAHASHI ◽  
Atsuo KONDA ◽  
Tatsuyuki YAMAMOTO
Keyword(s):  
Polyamide 6 ◽  
Blend Fiber

scholarly journals Numerical Verification of Tests on the Influence of the Imposed Thermal Cycles on the Structure and Properties of the S700MC Heat-Affected Zone

Metals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 974 ◽  
Author(s):  
Tomasz Kik ◽  
Jacek Górka ◽  
Aleksandra Kotarska ◽  
Tomasz Poloczek
Keyword(s):  
Finite Element Method ◽  
Tensile Strength ◽  
Heat Affected Zone ◽  
Numerical Verification ◽  
Resistance Heating ◽  
Structure And Properties ◽  
Thermal Cycles ◽  
Plastic Properties ◽  
Maximum Temperatures ◽  
Esi Group

The article presents the results of studies on the influence of simulated thermal cycles parameters on the structure and properties of the heat-affected zone (HAZ) of thermo-mechanically rolled S700MC steel. For this purpose, resistance heating tests of the tested samples were carried out to determine the effect of maximum temperatures of the imposed thermal cycles with different maximum temperatures at a constant cooling time in the temperature range between 800 and 500 °C (t8/5) and to study the influence of changes of this time on the structure and hardness as well as the tensile strength, elongation and toughness of the simulated HAZ in S700MC steel. The results of the tests, were supported by the results of finite element method (FEM) analyses in the VisualWeld (SYSWELD Code) software of the ESI Group. Selected heat distributions during heating, distributions of individual metallurgical phases and hardness were compared with results from real tests. On the basis of the results presented, an attempt was made to explain the decrease in mechanical and plastic properties in the HAZ area caused by the influence of the welding heat cycle.

Fracture Toughness of Polyamide 6/ Maleated Styrene-Ethylene-Butylene-Styrene/Silicon Carbide Nanocomposites

2011 ◽  
Vol 275 ◽  
pp. 229-233 ◽  
Author(s):  
Cheng Zhu Liao ◽  
Sie Chin Tjong
Keyword(s):  
Fracture Toughness ◽  
Silicon Carbide ◽  
Tensile Strength ◽  
Impact Strength ◽  
Tensile Ductility ◽  
Polyamide 6 ◽  
Essential Work ◽  
Melt Blending ◽  
Essential Work Of Fracture ◽  
Work Of Fracture

Polyamide 6 (PA6) based nanocomposites toughened with 20 wt% maleated styrene-ethylene-butylene-stryrene (mSEBS) reinforced with 1-7 wt% silicon carbide nanoparticles (SiCp) were fabricated via melt blending followed by injection molding. Tensile results showed that SiCp additions improve the Young’s modulus and tensile strength of PA6/mSEBS blends but decrease their tensile ductility and impact strength. EWF test revealed that the SiCp additions reduce both the specific essential work of fracture and specific non-essential plastic work of fracture. Thus SiCp additions are detrimental to the fracture toughness of PA6/mSEBS blend.

Analysis of polymeric materials properties changes after addition of reinforcing fibers

2019 ◽  
Vol 30 (6) ◽  
pp. 2833-2843 ◽  
Author(s):  
Adam Gnatowski ◽  
Agnieszka Kijo-Kleczkowska ◽  
Rafał Gołębski ◽  
Kamil Mirek
Keyword(s):  
Tensile Strength ◽  
Glass Fiber ◽  
Glass Fibers ◽  
Construction Materials ◽  
Polyamide 6 ◽  
Fiber Content ◽  
Polymer Materials ◽  
Polyamide 66 ◽  
Content Type ◽  
Reinforcing Fibers

Purpose The issues concerning the prediction of changes in properties of polymer materials as a result of adding reinforcing fibers are currently widely discussed in the field of polymer material processing. This paper aims to present strengths and weaknesses of composites based on polymer materials strengthened with fibers. It touches upon composite cracking at the junction of a matrix and its reinforcement. It also discusses the analysis of changes in properties of chosen materials as a result of adding reinforcing fibers. The paper shows improvement in the strength of polymer materials with fiber addition, which is extremely important, because these types of composites are used in the aerospace, automotive and electrical engineering industries. Design/methodology/approach Comparing the properties of matrix strength with fiber properties is practically impossible. Thus, fiber tensile strength and composite tensile strength shall be compared (González et al., 2011): tensile (glass fiber GF) = 900 [MPa], elongation ΔL≈ 0; yield point (polyamide 66) = 70−90 [MPa], elongation Δ[%] = 3,5-18; tensile (polyamide 66 + 15% GF) = 80-125 [MPa], elongation Δ[%] ≈ 0; tensile (polyamide 66 + 30% GF) = 190 [MPa], elongation Δ[%] ≈ 0; yield point (polyamide 6) = 45-85 [MPa], elongation Δ[%] = 4-15; tensile (polyamide 6 + 15% GF) = 80-125 [MPa], elongation Δ[%] ≈ 0; tensile (polyamide 6 + 30% GF) = 95-130 [MPa] elongation Δ[%] ≈ 0. Comparison of properties of selected polymers and composites is presented in Tables 1−10 and Figures 1 and 2. The measurement methodology is presented in detail in the paper Kula et al. (2018). The increase in fiber content (to the extent discussed) leads to the increase in yield strength stresses and hardness. The value of yield strength for polyamide with the addition of fiberglass grows gradually with the increase in fiber content. The hardness of the composite of polyamide with glass balls increases together with the increase in reinforcement content. The changes of these values do not occur linearly. The increase in fiber content has a slight impact on density change (the increase of about 1 g/mm3 per 10 per cent). Findings The use of polymers as a matrix allows to give composites features such as: lightness, corrosion resistance, damping ability, good electrical insulation and thermal and easy shaping. Polymers used as a matrix perform the following functions in composites: give the desired shape to the products, allow transferring loads to fibers, shape thermal, chemical and flammable properties of composites and increase the possibilities of making composites. Fiber-reinforced polymer composites are the effect of searching for new construction materials. Glass fibers show tensile strength, stiffness and brittleness, while the polymer matrix has viscoelastic properties. Glass fibers have a uniform shape and dimensions. Fiber-reinforced composites are therefore used to increase strength and stiffness of materials. Polymers have low tensile strength, exhibit high deformability. Polymers reinforced by glass fiber have a high modulus of elasticity and therefore provide better the mechanical properties of the material. Composites with glass fibers do not exhibit deformations in front of cracking. An increase in the content of glass fiber in composites increases the tensile strength of the material. Polymers reinforced by glass fiber are currently one of the most important construction materials and are widely used in the aerospace, automotive and electro-technical industries. Originality/value The paper presents the test results for polyethylene composites with 25 per cent and 50 per cent filler coming from recycled car carpets of various car makes. The tests included using differential scanning calorimetry, testing material hardness, material tensile strength and their dynamic mechanical properties.

Sign in / Sign up

Export Citation Format

Share Document