Thermogravimetric analysis of glue-welded joint with various adhesive materials

2021 ◽  
Vol 0 (9) ◽  
pp. 33-38
Author(s):  
A. Yu. Konoplin ◽  
◽  
N. I. Baurova ◽  
Keyword(s):  
Thermogravimetric Analysis ◽  
Experimental Evaluation ◽  
Welded Joint ◽  
Ir Thermography ◽  
Adhesive Material ◽  
Organic Silicon ◽  
Joint Quality ◽  
Influence Of Properties ◽  
Hot Melt ◽  
Adhesive Materials

Using the IR-thermography methods, the experimental evaluation of temperature transitions in a steel and aluminum glue-welded joint made with applying various adhesive materials (epoxy, anaerobic, organic-silicon and hot melt glue) has been carried out. It was found out that viscosity of an adhesive material considerably effected on the temperature transitions in the glue-welded joint as well as on glue line thickness. The temperature transitions were demonstrated on different sections of the glue-welded joint. Conclusions were made about the influence of properties of adhesive materials on the glue-welded joint quality.

Peculiarities of AD33 aluminum alloy hand laser welding

2020 ◽  
Vol 2020 (12) ◽  
pp. 13-17
Author(s):  
Nikolay Proskuryakov ◽  
Uliana Putilova ◽  
Rasul Mamadaliev ◽  
Oleg Teploukhov
Keyword(s):  
Aluminum Alloy ◽  
Laser Beam ◽  
Laser Welding ◽  
Welded Joint ◽  
Comparative Investigation ◽  
Micro Structure ◽  
Joint Quality ◽  
Beam Motion

The comparative investigation results of AD33 aluminum alloy welded joint quality dependence upon changes in a laser beam motion rate for conditions of hand and automatic laser welding are shown. A micro-structure of a welded joint at the hand and automatic laser welding of the AD33 alloy is investigated.

Effect of Different Filler Towards Welding of AA6061 Al Alloy by X-Ray CT Scan

2010 ◽  
Vol 146-147 ◽  
pp. 1402-1405 ◽  
Author(s):  
Che Lah Nur Azida ◽  
Azman Jalar ◽  
Norinsan Kamil Othman ◽  
Nasrizal Mohd Rashdi ◽  
Md Zaukah Ibel
Keyword(s):  
Aluminum Alloy ◽  
Ct Scan ◽  
Welded Joint ◽  
Gas Metal Arc Welding ◽  
Butt Joint ◽  
Al Alloy ◽  
X Ray ◽  
Metal Arc Welding ◽  
Joint Quality ◽  
Filler Metals

AA6061 Aluminum alloy welded joint using two different filler metals were studied by using X-ray CT-Scan. The filler metals ER 4043 and ER 5356 were used in this present work in order to investigate the effect of using different filler metals on the welded joint quality of AA 6061 aluminum alloy in welded zone microstructure. Gas metal arc welding (GMAW) technique and V grove butt joint with four layers and five passes welded joint were performed. From this investigation, it is found that AA6061 with ER 4043 showed less distribution of porosity compared to AA6061 with ER 5356 welded joint confirmed by X-ray Ct-Scan. The decreasing of porosities and presence of very fine grains in weld region area with ER 5356 compared to ER 4043 will be discussed in term of microstructure analysis.

scholarly journals Synthesis and Properties of Waterborne Polyurethane (WBPU)/Modified Lignin Amine (MLA) Adhesive: A Promising Adhesive Material

2016 ◽  
Author(s):  
Mohammad Mizanur Rahman ◽  
Md. Hasan Zahir ◽  
Han Do Kim
Keyword(s):  
Adhesive Strength ◽  
Weather Conditions ◽  
Waterborne Polyurethane ◽  
Chain Extender ◽  
Mixing Process ◽  
Adhesive Material ◽  
Lignin Amine ◽  
A Chain ◽  
Modified Lignin ◽  
Adhesive Materials

A series of waterborne polyurethane (WBPU)/modified lignin amine (MLA) adhesives was prepared using modified lignin amine (MLA) as a chain extender by a prepolymer mixing process. A successful Mannich reaction was achieved during the synthesis of MLA by reacting lignin with bis(3-aminopropyl)amine. Higher tensile strength, Young’s modulus and thermal stability were recorded for WBPU/MLA adhesives with higher MLA contents. The WBPU/MLA adhesive materials were used to coat PVC substrates. The adhesive strength increased with increasing MLA content. More importantly, the MLA also enhanced the WBPU/MLA coating in terms of adhesive strength at moderately high temperatures as well as under natural weather exposed conditions. The adhesive strength was essentially unaffected with 6.48 mole% MLA in the WBPU/MLA coating after exposure to natural weather conditions for 180 days.

scholarly journals The performance evaluation for rivet bonded joints in production and machine maintenance

2018 ◽  
Vol 224 ◽  
pp. 02003
Author(s):  
Natalia Baurova ◽  
Alexander Anoprienko ◽  
Yulia Romanova
Keyword(s):  
Performance Evaluation ◽  
Bonded Joints ◽  
Machine Maintenance ◽  
Epoxy Adhesives ◽  
Engineering Solution ◽  
Conventional Process ◽  
And Performance ◽  
Melt Adhesives ◽  
Hot Melt ◽  
Adhesive Materials

The paper deals with the studies on the serviceability and performance of rivet bonded joints produced with the use of thermoplastic hot-melt adhesives. Thermoplastic hot-melt adhesives are compared with conventional epoxy adhesives. The performance evaluation of different adhesive materials by dismantling of rivet bonded joints is fulfilled. The time necessary for each operation of the process is considered. The algorithms are provided for finding the design and engineering solution when replacing the conventional process of riveting by rivet bonding in production and machine maintenance.

Development of New Adhesives with Share of Secondary Raw Materials for Depositing of Non-Absorbent Facing Elements in Aggressive Environments

2019 ◽  
Vol 808 ◽  
pp. 82-87
Author(s):  
Jindřich Melichar ◽  
Jakub Hodul ◽  
Kamila Bergerová ◽  
Rostislav Drochytka
Keyword(s):  
Research And Development ◽  
High Temperatures ◽  
Raw Materials ◽  
Chemical Compounds ◽  
New Materials ◽  
Adhesive Material ◽  
Is Research ◽  
Secondary Raw Materials ◽  
Adhesive Mixtures ◽  
Adhesive Materials

The main focus of this paper is research and development of new adhesive materials which will be possible to apply and withstand conditions of environments with exposure to aggressive chemical compounds. These new materials will also be required to withstand high temperatures up to 100°C. Main application of developed adhesives will be during laying of non-absorbent tiles mainly made from cast basalt. Several secondary raw materials were considered during the development of new adhesive mixtures as possible replacement of silicate filler components of new materials. The goal is to develop a new adhesive material with properties as close as possible to the highly durable non-absorbent elements used in stressed environments, mainly because the material will be also used for pointing between individual elements.

scholarly journals THE INFLUENCE OF WELDED JOINT QUALITY ON SAFETY AND RELIABILITY IN OPERATION

2013 ◽  
Vol 1/1 ◽  
pp. 6-9 ◽  
Author(s):  
Bokůvka Otakar ◽  
Tatiana Liptáková ◽  
Peter Palček ◽  
Mária Chalupová ◽  
Libor Trško
Keyword(s):  
Welded Joint ◽  
Safety And Reliability ◽  
Joint Quality

scholarly journals DEVELOPMENT OF PIPE WELDING TECHNOLOGY WITH PULSE ARC FITTINGS BY TUNGSTEN ELECTRODE IN ARGON ENVIRONMENT

2019 ◽  
Vol 2019 (6) ◽  
pp. 65-69
Author(s):  
Александр Комаров ◽  
Aleksandr Komarov ◽  
Александр Вдовин ◽  
Aleksandr Vdovin ◽  
Алексей Забелин ◽  
...  
Keyword(s):  
Welded Joints ◽  
Structural Engineering ◽  
Welded Joint ◽  
Welding Process ◽  
Vertical Surface ◽  
Root Penetration ◽  
Automatic Welding ◽  
Tungsten Electrode ◽  
Wire Feeding ◽  
Joint Quality

The matters of a welded joint efficient structure choice and a technology of automatic welding by a nonconsumable tungsten electrode with pulse arc in argon environment with filler wire feeding and without it to increase quality of the welded joints in hydraulic exploration pipe lines of structural engineering are con-sidered. It is defined that a technological process of welding with flanged pipe feeding ensures quality sta-bility in welded joints, but a welding process with twosided grooving ensuring root joint quality and, accordingly, the whole welded joint is more preferable while using one-sided grooving separate cases of incomplete root penetration, an electrode fault to a side vertical surface of grooving in the course of welding are possible and a more labor-intensive operation of setting a welding torch along a joint axis is also possible. On the basis of the investigation results there were developed welding modes of hydraulic explora-tion elements of an excavator, preproduction models of pipes with fittings were welded. The welded pre-production models were delivered to the plant for an industrial testing fulfillment.

Application and limitations of thermogravimetric analysis to delineate the hot melt extrusion chemical stability processing window

2020 ◽  
Vol 590 ◽  
pp. 119916 ◽  
Author(s):  
Dana E. Moseson ◽  
Madison A. Jordan ◽  
Dishan D. Shah ◽  
Isaac D. Corum ◽  
Benedito R. Alvarenga Jr. ◽  
...  
Keyword(s):  
Thermogravimetric Analysis ◽  
Chemical Stability ◽  
Hot Melt Extrusion ◽  
Melt Extrusion ◽  
Processing Window ◽  
Hot Melt
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