Effect of the physical and mechanical properties of epoxy resins on the adhesion behavior of epoxy/copper leadframe joints

2001 ◽  
Vol 15 (4) ◽  
pp. 439-456 ◽  
Author(s):  
Kilwon Cho ◽  
Eun Chul Cho ◽  
Chan Eon Park
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resins ◽  
Physical And Mechanical Properties ◽  
Adhesion Behavior

Local Dissipative Processes in the Epoxy Component

2021 ◽  
Vol 899 ◽  
pp. 688-693
Author(s):  
Viktor A. Lomovskoy ◽  
Anna S. Shorshina ◽  
Igor D. Simonov-Emelyanov ◽  
Anastasia A. Razzhivina
Keyword(s):  
Mechanical Properties ◽  
Dielectric Properties ◽  
Epoxy Resins ◽  
Chemical Resistance ◽  
Physical And Mechanical Properties ◽  
Dissipative Processes ◽  
High Adhesion

It is known that epoxy resins (ES) and materials based on them are widely used in various areas of natural economy due to their valuable properties: low shrinkage during curing, high adhesion to various materials, chemical resistance, good physical and mechanical properties, and excellent dielectric properties [1].

scholarly journals Manufacture and Characterization Physical and Mechanical Properties of Bioveneer Based Ark Clam Shells Composite

2019 ◽  
pp. 132-140
Author(s):  
Evi Mariani M ◽  
Kerista Tarigan ◽  
Timbangen Sembiring
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Epoxy Resins ◽  
Raw Materials ◽  
Brinell Hardness ◽  
Physical And Mechanical Properties ◽  
Second Step ◽  
Compression Method ◽  
Hydroxyapatite Powder ◽  
Dry Mixing

Composite materials have been created for the applications of dental veneer from a mixture of raw materials : hydroxyapatite (HAp) powder from ark clam shells and epoxy resins by cold compression method with variations of composition hydroxyapatite (HAp) powder : epoxy resin (75 : 25)%wt, (80 : 20)%wt, (85 : 15)%wt, (90 : 10)%wt, dan (95 : 5)%wt. Sampling is created in three steps. The first step of ark clam shells powder is treated by smoothing it with a particle size of 200 mesh and heated at 900oC for 2 hours after it had been synthesized into hydroxyapatite (HAp) powder. The second step of the filler (hydroxyapatite powder) is mixed with dry mixing and then mixed with epoxy resin as a matrix. The third step of the homogeneous mixture is then inserted into the mold and compacted by heat to be more dense with pressure of 300 MPa or 3 ton held for 5 minutes at 27°C. The characterization results showed that the optimum composition of hydroxyapatite powder: epoxy resin (75 : 25)%wt with density value 0,1185 x 103 kg/m3, water absorption 1,163%, composed of -PO4 (phosphate), -CO3 (carbonate) and HOH groups. Mechanical properties with fracture strength 116 MPa, tensile strength 66,12 MPa, modulus of elasticity 3297,99 MPa and brinell hardness 75,87 HBR whose characterization results have met the conventional dental veneer standards.

scholarly journals PROPERTIES OF COMPOSITIONAL MATERIALS BASED ON THE MIXTURES OF EPOXY POLYMERS AND OLIGOSULFONES. PART 3. PHYSICO-MECHANICAL PROPERTIES

2019 ◽  
pp. 101-111 ◽  
Author(s):  
Ю. Кочергин ◽  
Y. Kochergin ◽  
В. Золотарёва ◽  
V. Zolotareva
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Epoxy Resins ◽  
Chemical Nature ◽  
Epoxy Polymer ◽  
Physical And Mechanical Properties ◽  
Strength Properties ◽  
Polymer Materials ◽  
Epoxy Polymers ◽  
Structural Purpose

The influence of modifying additives of oligosulfones of different molecular weight with terminal carboxyl and phenolic groups on the physical and mechanical properties of epoxy polymers is investigated. It is found that the modification allows to increase the tensile strength by 32, the deformation at break by 85, the modulus of elasticity by 47 and the failure rate by 123 %. The maximum set of properties is realized when the epoxy polymer is introduced into the composition of 3–5 wt. с. of oligosulfone with a molecular weight of 4700. It is shown that the magnitude of the effect depends significantly on the amount of the modifier introduced and its molecular weight. The chemical nature of the end groups has little effect on the basic deformation and strength properties. The results of the work allow to recommend the studied oligosulfonsfones for the production of composite polymer materials of structural purpose with improved physical and mechanical properties on the basis of epoxy resins.

PEMANFAATAN KAYU AKASIA MANGIUM (Acacia mangium Willd) UNTUK MEBEL

2012 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Djoko Purwanto
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Physical Properties ◽  
Treatment Process ◽  
Acacia Mangium ◽  
Physical And Mechanical Properties ◽  
Wood Fibers ◽  
Test Parameters ◽  
Mechanical And Physical Properties ◽  
Scale Scores

Timber Acacia mangium (Acacia mangium, Willd) for Furniture. The study aims to determine the mechanical and physical properties and the decorative value (color and fiber) wood of acacia mangium with using finishing materials. This type of finishing material used is ultran lasur natural dof ,ultran lasur classic teak, aqua politur clear dof, aqua politur akasia dan aqua politur cherry. After finishing the wood is stored for 3 months. Test parameters were observed, namely, physical and mechanical properties of wood, adhesion of finishing materials, color and appearance of the fiber, and timber dimensions expansion. The results showed that the mechanical physical properties of acacia wood qualified SNI. 01-0608-89 about the physical and mechanical properties of wood for furniture, air dry the moisture content from 13.78 to 14.89%, flexural strength from 509.25 to 680.50 kg/cm2, and compressive strength parallel to fiber 342.1 - 412.9 kg/cm2. Finishing the treatment process using five types of finishing materials can increase the decorative value (color and fiber) wood. Before finishing the process of acacia mangium wood has the appearance of colors and fibers and less attractive (scale scores 2-3), after finishing acacia wood fibers have the appearance of colors and interesting and very interesting (scale 4-5).Keywords: mangium wood, mechanical properties, decorative value, finishing, furniture.

Physical and Mechanical Properties of Tenun Pahang Fabrics using Alternative Yarns

2016 ◽  
Vol 13 (2) ◽  
pp. 67
Author(s):  
Engku Liyana Zafirah Engku Mohd Suhaimi ◽  
Jamil Salleh ◽  
Suzaini Abd Ghani ◽  
Mohamad Faizul Yahya ◽  
Mohd Rozi Ahmad
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
The Other ◽  
Silk Fabrics ◽  
Recovery Angle ◽  
Made In

An investigation on the properties of Tenun Pahang fabric performances using alternative yarns was conducted. The studies were made in order to evaluate whether the Tenun Pahang fabric could be produced economically and at the same time maintain the fabric quality. Traditional Tenun Pahang fabric uses silk for both warp and weft. For this project, two alternative yarns were used which were bamboo and modal, which were a little lower in cost compared to silk. These yarns were woven with two variations, one with the yarns as weft only while maintaining the silk warp and the other with both warp and weft using the alternative yarns. Four (4) physical testings and three (3) mechanical testings conducted on the fabric samples. The fabric samples were evaluated including weight, thickness, thread density, crease recovery angle, stiffness and drapability. The results show that modal/silk and bamboo silk fabrics are comparable in terms of stiffness and drapability, hence they have the potential to replace 100% silk Tenun Pahang.

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