High Impact Properties of Polyketone/Polyamide-6 Alloys Induced by Characteristic Morphology and Water Absorption

2009 ◽  
Vol 42 (24) ◽  
pp. 9506-9514 ◽  
Author(s):  
Atsushi Asano ◽  
Maiko Nishioka ◽  
Yohei Takahashi ◽  
Atsushi Kato ◽  
Shigeki Hikasa ◽  
...  
Keyword(s):  
Water Absorption ◽  
Polyamide 6 ◽  
High Impact ◽  
Impact Properties ◽  
Characteristic Morphology

scholarly journals Influence of Water Absorption on High-Impact Properties of Polyketone/Polyamide Polymer Alloys

2009 ◽  
Vol 66 (12) ◽  
pp. 570-576 ◽  
Author(s):  
Maiko NISHIOKA ◽  
Yohei TAKAHASHI ◽  
Atsushi KATO ◽  
Shigeki HIKASA ◽  
Hitoshi IWABUKI ◽  
...  
Keyword(s):  
Water Absorption ◽  
High Impact ◽  
Impact Properties ◽  
Influence Of Water

scholarly journals Pengaruh minuman teh pada pemakai basis gigi tiruan nilon termoplastik terhadap penyerapan air dan stabilitas warnaThe effect of tea on the thermoplastic nylon denture base wearers on water absorption and colour stability

2020 ◽  
Vol 32 (1) ◽  
pp. 66
Author(s):  
Siti Wahyuni ◽  
Chairunnisa Ricca
Keyword(s):  
Water Absorption ◽  
Base Material ◽  
Acrylic Resin ◽  
Polyamide 6 ◽  
T Test ◽  
Laboratory Research ◽  
Colour Stability ◽  
Denture Base ◽  
Group A ◽  
Group B

Pendahuluan: Nilon termoplastik merupakan basis gigi tiruan yang banyak diminati oleh para dokter gigi karena memiliki beberapa keuntungan dibandingkan bahan basis gigi tiruan resin akrilik. Diantara jenis nilon termoplastik yang sering dijadikan basis gigi tiruan adalah poliamida 6 dan poliamida mikrokristalin. Poliamida Mikrokristalin merupakan poliamida generasi baru yang dibuat untuk menanggulangi kelemahan pada poliamida sebelumnya. Tujuan penelitian ini adalah menganalisis pengaruh minuman teh pada pengguna gigi tiruan nilon termoplastik terhadap penyerapan air dan stabilitas warna. Metode: Jenis penelitian ini adalah experimental laboratoris. Jumlah sampel terdiri dari 40 dengan  ukuran diameter 15 mm ± 1 mm dan ketebalan 0.5 mm ± 0,1 mm (ISO 4049) dan terbagi menjadi 4 kelompok (kelompok A poliamida 6 dan kelompok B poliamida mikrokristalin untuk penyerapan air serta kelompok C poliamida 6 dan kelompok D poliamida mikrokristalin untuk uji stabilitas warna). Semua sampel direndam dalam larutan teh selama 7 hari. Data dianalisis dengan uji T Independen. Gambaran mikroskopis sampel diuji dengan SEM Hasil: Berdasarkan uji T Independen hasil menunjukkan perbedaan yang signifikan diantara kelompok A dan B, C dan D.  Uji T independen menunjukkan perbedaan yang signifikan diantara kelompok A dan B, C dan D (p=0,0001, p<0,05) Simpulan: Terdapat pengaruh minuman teh pada pengguna gigi tiruan nilon termoplastik. Poliamida Mikrokristalin memiliki penyerapan air yang lebih sedikit dan stabilitas warna yang lebih baik dibandingkan Poliamida 6.Kata kunci: Nilon termoplastik, poliamida 6, poliamida mikrokristalin, penyerapan air, stabilitas warna, SEM. ABSTRACTIntroduction: Thermoplastic nylon is a denture base mostly demanded by dentists due to its several advantages over acrylic resin denture base material. Among the types of thermoplastic nylon that are often used as denture bases are polyamide 6 and microcrystalline polyamide. Microcrystalline polyamide is the new generation of polyamides created to overcome the weaknesses of previous polyamides. The purpose of this study was to analyse the effect of tea on thermoplastic nylon denture wearers on water absorption and colour stability. Methods: This research was experimental laboratory research on 40 samples with a diameter of 15 mm ± 1 mm, and a thickness of 0.5 mm ± 0.1 mm (ISO 4049), divided into four groups (Group A was the polyamide 6; Group B was the microcrystalline polyamide on the water absorption; Group C was polyamide 6; and Group D was microcrystalline polyamide on the colour stability). All samples were immersed in the tea solutions for 7 days. Data were analysed with independent t-test. The microscopic structure was analysed using the scanning electron microscope (SEM). Results: The results showed significant differences between group A, B, C, and D. The independent t-test also showed significant differences between group A, B, C, and D (p = 0.000; p < 0.05). Conclusion: There is an effect of tea on the thermoplastic nylon denture wearers. Microcrystalline polyamides have less water absorption and better colour stability than Polyamide 6.Keywords:  Polyamide 6, thermoplastic nylon, microcrystalline polyamide, water absorption, colour stability, SEM.

Influence of Water Absorption on Static Friction of Pure and Friction-Modified PA6 Polymers

2019 ◽  
Vol 799 ◽  
pp. 59-64
Author(s):  
Igor Velkavrh ◽  
Stefan Klien ◽  
Joel Voyer ◽  
Florian Ausserer ◽  
Alexander Diem
Keyword(s):  
Water Absorption ◽  
Static Friction ◽  
Polyamide 6 ◽  
Coated Steel ◽  
Friction Modifiers ◽  
Test Conditions ◽  
Influence Of Water ◽  
Steel Surfaces ◽  
Contact Pressures ◽  
Lubrication Conditions

In the present study, static coefficients of friction of pure and friction modified (FM) polyamide 6 (PA6) polymers against primer-coated steel surfaces were investigated under a series of nominal contact pressures and by considering the influences of water absorption by the polymer, temperature, counter-body surface roughness and lubrication conditions. Under the majority of the test conditions investigated, FM PA6 exhibited lower static friction than pure PA6. Under unlubricated conditions, this was due to the low adhesion of the FM PA6 provided by its friction modifying inclusions; while under lubricated conditions, a combination of softening due to water absorption and decreased adhesion provided by its friction modifiers enabled lower static friction, especially at medium and high contact pressures.

High impact toughness of polyamide 6/poly (vinylidene fluoride) blends induced by an ionic liquid

2013 ◽  
Vol 33 (8) ◽  
pp. 727-733
Author(s):  
Chun Li ◽  
Bing Na ◽  
Ruihua Lv ◽  
Jie Zhu ◽  
Huayan Pan ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Impact Toughness ◽  
Vinylidene Fluoride ◽  
Polyamide 6 ◽  
High Impact ◽  
Island Structure ◽  
Poly Vinylidene Fluoride ◽  
Enhanced Mobility

Abstract This study reports the high impact toughness of polyamide 6 (PA6)/poly (vinylidene fluoride) (PVDF) blends achieved via adding an ionic liquid. The presence of the ionic liquid in the blends promotes the transformation of sea-island structure into co-continuous morphology, which to a large extent accounts for the improvement in toughness. In addition, it is believed that the enhanced mobility of the PA6 matrix by the ionic liquid also contributes to the high impact toughness.

Difference in the micro-dynamics mechanism between aromatic nylon and aliphatic nylon during water absorption: spectroscopic evidence

2018 ◽  
Vol 20 (41) ◽  
pp. 26764-26776 ◽  
Author(s):  
Liyang Jia ◽  
Gehong Su ◽  
Qiang Yuan ◽  
Xueqian Zhang ◽  
Tao Zhou
Keyword(s):  
Water Absorption ◽  
Polyamide 6 ◽  
High Humidity ◽  
Spectroscopic Evidence ◽  
Barrier Performance ◽  
The Difference

The difference in the micro-dynamics mechanism between aromatic nylon and aliphatic nylon during water absorption was studied to explore the reason for the significantly smaller decline of barrier performance of poly(m-xylene adipamide) (MXD6) film than that of polyamide 6 (PA6) film under high humidity.

HIDURAX 7

Alloy Digest ◽  
2006 ◽  
Vol 55 (3) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Magnetic Permeability ◽  
High Impact ◽  
Impact Properties

Abstract Hidurax 7 is a nickel and silicon hardened bronze grade with tensile properties slightly lower than Hidurax 1 (see Alloy Digest Cu-740, February 2006). The alloy has high impact properties and low magnetic permeability. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, machining, and joining. Filing Code: CU-741. Producer or source: Langley Alloys.

Effect of nanofiber diameter on water absorption properties and pore size of polyamide-6 electrospun nanoweb

2014 ◽  
Vol 84 (19) ◽  
pp. 2045-2055 ◽  
Author(s):  
Amir Houshang Hekmati ◽  
Nabyl Khenoussi ◽  
Habiba Nouali ◽  
Joël Patarin ◽  
Jean-Yves Drean
Keyword(s):  
Water Absorption ◽  
Pore Size ◽  
Mercury Porosimetry ◽  
Average Diameter ◽  
Polyamide 6 ◽  
Contact Angle Measurement ◽  
Angle Measurement ◽  
Absorption Properties ◽  
Absorption Time ◽  
Nanofiber Diameter

Electrospinning is a common method used to produce nanofiber from almost all types of polymers. By changing effective parameters of this process, especially polymer solution concentration, it is possible to produce nanoweb that consists of nanofibers with different averages of diameter. Here, the effect of nanofibers’ diameter on textural properties (water absorption time and pore size) of polyamide-6 nanoweb has been studied. In this way, three nanowebs with nanofibers’ average diameter of 111, 151, and 318 nm were electrospun from three different concentrations of 15, 20, and 25 wt%, respectively. Contact angle measurement and mercury porosimetry were used to investigate the nanowebs’ water absorption properties and porosity (pore size). The results from the water absorption test demonstrated that the absorption time of a 2 µL water droplet was remarkably shorter for electrospun nanoweb with larger nanofiber diameter. Nanowebs electrospun from 15 and 20 wt% concentrations had roughly the same absorption regime, while for 25 wt% the absorption regime was totally different. Mercury porosimetry of electrospun nanowebs revealed that the pore size in the nanoweb structure decreased by decreasing average diameter of nanofibers. The results of this study showed that contact angle measurement and mercury porosimetry tests could be used as complementary methods to scanning electron microscopy and atomic force microscopy and presented as promising methods to study the textural and physical properties of electrospun nanowebs.

scholarly journals Low Water Absorption, High-Strength Polyamide 6 Composites Blended with Sustainable Bamboo-Based Biochar

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1367
Author(s):  
Shiliu Zhu ◽  
Yong Guo ◽  
Yuxia Chen ◽  
Shengquan Liu
Keyword(s):  
Mechanical Properties ◽  
Mechanical Strength ◽  
Water Absorption ◽  
High Strength ◽  
Polyamide 6 ◽  
Negative Effects ◽  
Plant Fibers ◽  
Maximum Decrease ◽  
Bamboo Fibers ◽  
The Impact

To promote the application of polyamide 6 (PA6) in wood–plastic composites, the negative effects associated with the thermal degradation of plant fibers must be overcome. In this study, waste bamboo fibers were subjected to pyrolysis and ball milling to afford nano bamboo-based biochar (BC), which was subsequently used as reinforcement to prepare PA6/BC nano composites by injection molding. In addition, the processing fluidity, water absorption, mechanical properties, and interface compatibility of PA6/BC composites were discussed. Results revealed that a BC content of less than 30 wt% is beneficial to improve the processing fluidity of the composites. With the increase in the BC content, the density of the PA6/BC composites gradually increased, while the water absorption of the PA6/BC composites gradually decreased, and the maximum decrease was 46%. Compared to that of pure PA6, the mechanical strength of PA6/BC composites was improved by the addition of BC, and the maximum tensile/flexural strength and modulus of PA6/BC composites increased by 41%/72% and 195%/244%, respectively. However, the impact strength decreased by 27%. After immersion treatment, the dimensional stability and mechanical strength of the composites decreased, while toughness improved. At a BC content of less than 40 wt%, BC particles exhibited good dispersibility and wettability in the PA6 matrix, and the rough surface and rich pore structure of BC rendered strong mechanical interlocking effects and good interface compatibility, thereby enhancing the mechanical properties of the composites.

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