scholarly journals Propargylated Novolac Resins for Solvent-Free Technology for High-Performance Composites

2018 ◽  
Vol 20 (2) ◽  
pp. 125
Author(s):  
D. Kalugin ◽  
S. Nechausov ◽  
A. Galiguzov ◽  
A. Malakho ◽  
V. Lepin ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Glass Fiber ◽  
High Performance ◽  
Phenolic Resin ◽  
Fiber Composite ◽  
Glass Fibers ◽  
Sem Analysis ◽  
Solvent Free ◽  
Glass Fiber Composite ◽  
Novolac Phenolic Resin

Propargyl substituted novolac phenolic resin diluted with unsaturated bisphenol-A ethers was used for glass fiber solvent-free impregnation for the formation of high-performance composites. The addition of 20% mass of diallyl (DAEBA) or dipropargyl (DPEBA) bisphenol-A to propargyl substituted novolac phenolic resin resulted in viscosity drop from 2000 mPa∙s to 400‒500 mPa∙s at 140 °C. This proved to be enough to achieve complete impregnation of the twisted glass fibers, as illustrated by SEM analysis. This improvement in impregnation was shown to result in increasing both flexural strength and modulus of the unidirectional glass fiber composite material approximately with a factor of two compared to the composite impregnated with resin without bisphenol-A ethers. DPEBA was shown to be more suitable for high-temperate applications since its addition does not seem to result in a decrease of the heat deflection temperature (HDT).

Mechanical, thermal, electrical, and interfacial properties of high-performance bisphthalonitrile/polyarylene ether nitrile/glass fiber composite laminates

2013 ◽  
Vol 34 (12) ◽  
pp. 2160-2168 ◽  
Author(s):  
Zhiran Chen ◽  
Yajie Lei ◽  
Hailong Tang ◽  
Junji Wei ◽  
Xiaobo Liu
Keyword(s):  
Glass Fiber ◽  
Composite Laminates ◽  
High Performance ◽  
Fiber Composite ◽  
Interfacial Properties ◽  
Polyarylene Ether Nitrile ◽  
Glass Fiber Composite

Study on Modification of Phenolic Resin/Glass Fiber Composite by Polyvinyl Alcohol

2010 ◽  
Vol 44-47 ◽  
pp. 3045-3048
Author(s):  
Ming Yang ◽  
Yu Jing Nie
Keyword(s):  
Impact Strength ◽  
Polyvinyl Alcohol ◽  
Glass Fiber ◽  
Phenolic Resin ◽  
Fiber Composite ◽  
Aliphatic Chain ◽  
Glass Fiber Composite ◽  
Bending Resistance ◽  
New Type ◽  
The Impact

A new type of modified phenolic resin/glass fiber composite is introduced. Phenolic resin was modified with 2% polyvinyl alcohol(PVA). Test specimens were prepared by mixing and molding. Fourier transform infrared spectroscopy (FTIR) was adopted to investigate its molecular structure. FTIR results showed that long aliphatic chain were introduced into the structure of PR, which could absorb the energy during load was applied on the composite. The toughing mechanism was investigated by comparing the impact strength, bending resistance, tensile strength with non-modified phenolic resin. Results shows that the impact strength of the modified PR/GF composite reaches 53.21 KJ/m2, which is almost 2 times more than that of pure PR/GF composite. Finally, the application of the modified PR/GF composite on shoes head was introduced.

Preliminary Study of Polypropylene/Sawdust Green Composite

2012 ◽  
Vol 557-559 ◽  
pp. 334-337 ◽  
Author(s):  
Ching Wen Lou ◽  
Ching Wen Lin ◽  
Chen Hung Huang ◽  
Ting Ting Li ◽  
Jin Mao Chen ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Glass Fiber ◽  
Bending Strength ◽  
Fiber Composite ◽  
Glass Fibers ◽  
Bending Test ◽  
Green Composite ◽  
Plastic Composite ◽  
Glass Fiber Composite ◽  
Injection Molded

In this study, sawdust and polypropylene (PP) are melt-blended and injection-molded to form the wood-plastic composite (WPC).The WPC is then tested in terms of mechanical properties and compared with control groups of pure PP plate and PP/glass fiber (PP/GF) composite. In the tensile test, the WPC displays a tensile strength of 25-27 MPa, regardless of whether the sawdust content is 5, 10, or 15 wt%. Pure PP composite has a tensile strength of 30 MPa; PP/GF composite with 15 wt% glass fibers has a tensile strength of 57 MPa. In the bending test, the WPC displays a flexural strength of 44-45 MPa as the sawdust content does not influence the bending strength. PP/glass fiber composite yields a bending strength of 85 MPa when the content of glass fiber is 15 wt%. WPC is 5% lighter than PP/glass fiber composite.

Preparation of polypropylene/glass fiber composite with high performance through interfacial crystallization

2015 ◽  
Vol 23 (4) ◽  
pp. 284-289 ◽  
Author(s):  
Yichuan Chen ◽  
Xinyu Wen ◽  
Min Nie ◽  
Qi Wang
Keyword(s):  
Glass Fiber ◽  
High Performance ◽  
Fiber Composite ◽  
Glass Fiber Composite

Impact and Flexural Strength of Kaolinite / Glass Fibers Reinforced Heat-Cured Acrylic Denture

2020 ◽  
Vol 1002 ◽  
pp. 340-349
Author(s):  
Wafaa A. Hussain ◽  
Ban Adbul Maseeh Bader ◽  
Muna Y. Slewa ◽  
Luay H. Alwan
Keyword(s):  
Glass Fiber ◽  
Fiber Composite ◽  
Glass Fibers ◽  
Testing Machine ◽  
Tensile Testing Machine ◽  
Denture Base ◽  
Glass Fiber Composite ◽  
Powder Samples ◽  
Materials Used ◽  
Woven Glass Fiber

Nowadays, most materials used to manufacture denture base are heat-cured PMMA, to overcome the low strength of this material, different methods were used to strengthen the denture base and enhanced their properties. This study investigated the effect of glass fiber woven powder kaolinite (Al2Si2O5 (OH) 4) to influence and strength of flexure. Acrylic and kaolinite powders were mixed together and mixed again with acrylic liquid to prepare hybrid composite samples. Woven glass fiber composite was prepared by inserting woven glass fiber between the two halves of the dough. PMMA reinforced by (0, 20) wt% of woven glass fibers or/and (0, 2, 5, 7) wt% of kaolinite powder to prepare eight experimental groups (n= 7). The fractured surface was an evaluation by scanning electron microscope (SEM). X-ray diffraction and Fourier transforminfrared spectra FTIR tests were used to examine kaolinite powder. Samples were tested with the use of a Charpy testing machine for impact test and Instron tensile testing machine for flexural test after storage in water for 10 days at 37 °C. The results showed woven glass fibers with clay powder together significantly increased the mechanical properties of PMMA.

scholarly journals Irradiation of a Polypropilene-Glass Fiber Composite

2010 ◽  
Vol 71 ◽  
pp. 138-144 ◽  
Author(s):  
L.F. de Miranda ◽  
L.H. Silveira ◽  
Leonardo Gondim Andrade e Silva ◽  
Antônio Hortêncio Munhoz Jr.
Keyword(s):  
Ionizing Radiation ◽  
Glass Fiber ◽  
Fiber Composite ◽  
Glass Fibers ◽  
Softening Temperature ◽  
Mechanical Tests ◽  
Glass Fiber Composite ◽  
Mechanical Tensile ◽  
Mechanical Performances ◽  
Crosslinking Reactions

The use of composite materials, mainly reinforced thermoplastic has increased on the polymer industry, mainly the polypropylene resins (PP) reinforced by glass fibers (GF). The ionizing radiation can promote alterations in the polymeric chains by scission and crosslinking reactions. The objective of this work is to study the effect of the ionizing radiation in the properties of the polypropylene long fiber glass reinforced thermoplastic. Pellets with 1,3 cm of length, contend 15wt% of the unidirectional long glass fiber were obtained by extrusion and, subsequently, the samples were molded by injection, irradiated and submitted to thermal and mechanical tests. The mechanical (tensile and impact) properties and thermal (HDT and Vicat softening temperature) of irradiated and non irradiated reinforced thermoplastic were determined. The doses of the irradiation of the samples were 30, 50 and 100 kGy in a source of 60Co. The results showed a reduction in the thermal and mechanical performances indicating a degradation of the polymeric matrix.

A few-layered Ti3C2nanosheet/glass fiber composite separator as a lithium polysulphide reservoir for high-performance lithium–sulfur batteries

2016 ◽  
Vol 4 (16) ◽  
pp. 5993-5998 ◽  
Author(s):  
Chong Lin ◽  
Weikun Zhang ◽  
Lei Wang ◽  
Zhenggong Wang ◽  
Wen Zhao ◽  
...  
Keyword(s):  
Glass Fiber ◽  
High Performance ◽  
Fiber Composite ◽  
Glass Fiber Composite ◽  
Lithium Sulfur Batteries ◽  
Composite Separator ◽  
Lithium Sulfur

A few-layered Ti3C2nanosheet/glass fiber composite separator was designed and fabricated as a lithium polysulphide reservoir for high-performance lithium–sulfur batteries.

Wood-Glass Fiber Composite Materials in Structural Elements of Tram Tracks

2019 ◽  
Vol 777 (12) ◽  
pp. 73-77
Author(s):  
B.A. BONDAREV ◽  
◽  
T.N. STORODUBTSEVA ◽  
D.A. KOPALIN ◽  
S.V. KOSTIN ◽  
...  
Keyword(s):  
Composite Materials ◽  
Glass Fiber ◽  
Fiber Composite ◽  
Structural Elements ◽  
Glass Fiber Composite ◽  
Fiber Composite Materials

scholarly journals The Mechanical Properties and Damage Evolution of UHPC Reinforced with Glass Fibers and High-Performance Polypropylene Fibers

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2455
Author(s):  
Jiayuan He ◽  
Weizhen Chen ◽  
Boshan Zhang ◽  
Jiangjiang Yu ◽  
Hang Liu
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Damage Evolution ◽  
High Performance ◽  
High Performance Concrete ◽  
Glass Fibers ◽  
Ultra High Performance Concrete ◽  
Concrete Damaged Plasticity ◽  
The Difference ◽  
Experimental Values

Due to the sharp and corrosion-prone features of steel fibers, there is a demand for ultra-high-performance concrete (UHPC) reinforced with nonmetallic fibers. In this paper, glass fiber (GF) and the high-performance polypropylene (HPP) fiber were selected to prepare UHPC, and the effects of different fibers on the compressive, tensile and bending properties of UHPC were investigated, experimentally and numerically. Then, the damage evolution of UHPC was further studied numerically, adopting the concrete damaged plasticity (CDP) model. The difference between the simulation values and experimental values was within 5.0%, verifying the reliability of the numerical model. The results indicate that 2.0% fiber content in UHPC provides better mechanical properties. In addition, the glass fiber was more significant in strengthening the effect. Compared with HPP-UHPC, the compressive, tensile and flexural strength of GF-UHPC increased by about 20%, 30% and 40%, respectively. However, the flexural toughness indexes I5, I10 and I20 of HPP-UHPC were about 1.2, 2.0 and 3.8 times those of GF-UHPC, respectively, showing that the toughening effect of the HPP fiber is better.

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