Fiber Reinforced Epoxy Resin Composite Materials Using Carboxylate-Alumoxanes as Cross-Linking Agents

1999 ◽  
Vol 581 ◽  
Author(s):  
Cullen T. Vogelson ◽  
Yoshihiro Koide ◽  
Andrew R. Barrona
Keyword(s):  
Composite Materials ◽  
Resin Composite ◽  
Diglycidyl Ether ◽  
Alumina Nanoparticles ◽  
Resin Matrix ◽  
Hybrid Resin ◽  
Organic Hybrid ◽  
New Class ◽  
Epoxy Resin Composite ◽  
Ceramic Fillers

ABSTRACTChemically functionalized alumina nanoparticles (carboxylate-alumoxanes) are used as the inorganic component of a new class of inorganic-organic hybrid materials. Lysine- or para- hydroxybenzoic acid-derivatized alumoxanes are readily prepared from the reaction of boehmite, [Al(O)(OH)]n, with the appropriate carboxylic acid. The peripheral organic hydroxides and amines of these carboxylate-alumoxanes either react directly with epoxide resins, such as the diglycidyl ether of bisphenol-A (DER 332), to form a hybrid material, or in the presence of an organic resin and hardener system to form a composite material. SEM and AFM show a uniform distribution of alumina nanoparticles within the resin matrix. The properties and cure times of the alumoxane hybrid and composite materials are distinct from both the pure resins and from a physical blend of the resins with traditional ceramic fillers. A significant increase in thermal stability and tensile strength is observed for both the hybrid and composite resin systems. In addition, both carbon fiber and carbon/Kevlar® matting have been successfully incorporated into the hybrid resin systems resulting in further property improvements.

scholarly journals THE EFFECT OF COCONUT COIR FIBER POWDER CONTENT AND HARDENER WEIGHT FRACTIONS ON MECHANICAL PROPERTIES OF AN EPR-174 EPOXY RESIN COMPOSITE

SINERGI ◽  
2021 ◽  
Vol 25 (3) ◽  
pp. 361
Author(s):  
Muhamad Fitri ◽  
Shahruddin Mahzan ◽  
Imam Hidayat ◽  
Nurato Nurato
Keyword(s):  
Mechanical Properties ◽  
Shear Strength ◽  
Composite Materials ◽  
Impact Strength ◽  
Epoxy Resin ◽  
Resin Composite ◽  
Weight Fraction ◽  
Resin Matrix ◽  
Powder Content ◽  
Made In

The development of composite materials is increasingly widespread, which require superior mechanical properties. From many studies, it is found that the mechanical properties of composite materials are influenced by various factors, including the reinforcement content, both in the form of fibers and particle powder. However, those studies have not investigated the effect of the hardener weight fraction on the mechanical properties of resin composite materials. Even though its function as a hardener is likely to affect its mechanical properties, it might obtain the optimum composition of the reinforcing content and hardener fraction to get the specific mechanical properties. This study examines the effect of hardener weight fraction combined with fiber powder content on mechanical properties of EPR-174 epoxy resin matrix composite and determines the optimum of Them. The research was conducted by testing a sample of composite matrix resin material reinforced with coconut fiber powder. The Powder content was made in 3 levels, i.e.: 6%, 8%, and 10%. While the hardener fraction of resin was made in 3 levels, i.e.: 0.4, 0.5, and 0.6. The test results showed that pure resin had the lowest impact strength of 1.37 kJ/m2. The specimen with a fiber powder content of 6% has the highest impact strength i.e.: 4.92 kJ/m2. The hardener fraction of 0.5 has the highest impact strength i.e.: 4.55 kJ/m2. The fiber powder content of 8% produced the highest shear strength i.e.: 1.00 MPa. Meanwhile, the hardener fraction of 0.6 has the highest shear strength i.e.: 2.03 MPa.

Treeing Deterioration Characteristics in Cross-linked Polyethylene and Epoxy Resin Composite Materials

1997 ◽  
Vol 36 (Part 1, No. 7A) ◽  
pp. 4392-4396
Author(s):  
Changmin Yuan ◽  
Noboru Yoshimura ◽  
Jangseob Lim ◽  
Hiroyuki Miyata ◽  
Toshio Niwa
Keyword(s):  
Composite Materials ◽  
Epoxy Resin ◽  
Resin Composite ◽  
Epoxy Resin Composite ◽  
Deterioration Characteristics

Effect of Backing Materials on the Performance of Cement-Based Piezoelectric Ultrasonic Sensors

2013 ◽  
Vol 351-352 ◽  
pp. 1273-1277
Author(s):  
Xin Chun Xie ◽  
Mi Mi Li ◽  
Dong Yu Xu ◽  
Peng Kun Hou ◽  
Shi Feng Huang
Keyword(s):  
Composite Materials ◽  
Epoxy Resin ◽  
Metal Powder ◽  
Resin Composite ◽  
Wave Number ◽  
Frequency Bandwidth ◽  
Epoxy Resin Composite ◽  
Longitudinal Resolution ◽  
Echo Pulse ◽  
Peak Value

In order to increase the sensitivity, frequency bandwidth and longitudinal resolution of the 1-3 cement-based piezoelectric ultrasonic sensor, different metal powder/epoxy resin composite materials were used to make backing layer, and the performances of sensors were evaluated and compared. The results indicated that the increase of the sensitivity and the frequency bandwidth, as well as a decrease of the pulse wave number can be observed when the backing materials of metal powder/epoxy resin composite materials were added to the sensor. A 42%-increase of the maximum peak-to-peak value of the echo pulse response, a 52%-reduction of the ring down time and a 200%-increase of the bandwidth can be achieved by using the backing material.

Preparation and Characterization of Epoxy Resin Composite Modified by Flexible Polyurethane Resin

2014 ◽  
Vol 904 ◽  
pp. 170-172 ◽  
Author(s):  
Rong Cheng ◽  
Cheng Zhang ◽  
Jing Wang
Keyword(s):  
Composite Materials ◽  
Epoxy Resin ◽  
Performance Test ◽  
Mechanical Performance ◽  
Resin Composite ◽  
Mass Ratio ◽  
Scanning Calorimetry ◽  
Epoxy Resin Composite ◽  
Amine Curing ◽  
Modified Epoxy

In this paper, under the effect of MD1041 cashew oil modified phenolic amine curing agent for epoxy resin, it successfully prepared polyurethane flexible resin modified epoxy resin composite materials by using polyurethane modified epoxy resin reinforced flexible resin. Modified composite material of the new preparation is characteristed by the method of the mechanical performance test, Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC). The results show that the flexible resin has a strong effect on the toughness of modified epoxy resin composite materials. When the mass ratio of the flexible resin account for 5.9%,comprehensive mechanical properties of the modified composites is at the premium; when the mass ratio of flexible resin account for 3.1%, the thermal stability of the epoxy resin modified with flexible resin is at the best.

Development and characterization of epoxy resin composite reinforced with bamboo fiber and bagasse as filler

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Nachiappan Sukumar ◽  
Mekonnen Bayeleyegn ◽  
Sampath Aruna
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Epoxy Resin ◽  
Resin Composite ◽  
Bamboo Fiber ◽  
Resin Matrix ◽  
Original Research ◽  
Content Type ◽  
Epoxy Resin Composite ◽  
Bagasse Fiber

Purpose Recently, composites have concerned considerable importance as a potential operational material. Lots of work have been carried out to enhance the mechanical properties of composites. The main aim of this paper is to develop bamboo mat as reinforcing material with bagasse fiber as filler using epoxy resin matrix composite. Design/methodology/approach In this research, the effect of fiber surface treatments on mechanical properties of epoxy resin composite with bagasse as filler has been developed and investigated. The extracted bamboo fibers were treated with NaOH to improve the surface roughness fiber. Using treated and untreated bamboo fiber handwoven mat has been produced to be used as reinforcement and bagasse fiber has been converted into powder to be filled as filler. Composite material is fabricated using bamboo fiber and bagasse fiber as filler with epoxy resin as a matrix using hand layup technique. Findings Then, tensile, flexural and compressive strength and water absorption tests were conducted on sodium hydroxide treated and untreated fiber composites. The test results comparing with and without alkali treated composites show that there was significant change in their strength and water absorption properties on alkali treated fiber. Originality/value This study is an original research paper.

Studies on the Thermal Conductivity of Al2O3/Epoxy Resin Composite Materials

2012 ◽  
Vol 535-537 ◽  
pp. 235-238 ◽  
Author(s):  
Xiao Hu Wan ◽  
Li Ge Wang ◽  
Bin Zuo ◽  
En Ze Wang ◽  
Guang Zhi Zhu
Keyword(s):  
Thermal Conductivity ◽  
Particle Size ◽  
Composite Materials ◽  
Epoxy Resin ◽  
Resin Composite ◽  
Pure Epoxy ◽  
Mean Particle Size ◽  
Epoxy Resin Composite

Al2O3/epoxy resin composite materials were prepared with alumina as filler in this paper, and the effects of particle size and added quantity of Al2O3 powers on the thermal conductivity of the composites have been investigated. The results show that, thermal conductivity of the composites increases with the increase of the added quantity of Al2O3 powders, and suitable particle size of alumina filler could help to form heat conductive chain which can improve the thermal conductivity of the composites effectively. The thermal conductivity could reach 0.48 W/(m•K), which is five times than that of pure epoxy resin, when the amount of alumina powders is 60% and its mean particle size is 100µm.

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