Chemisorption mechanism and effect of polyacrylic acid on the improvement in bond durability of zinc phosphate-to-polymer adhesive joints

1987 ◽  
Vol 22 (2) ◽  
pp. 722-736 ◽  
Author(s):  
T. Sugama ◽  
L. E. Kukacka ◽  
N. Carciello ◽  
J. B. Warren
Keyword(s):  
Polyacrylic Acid ◽  
Zinc Phosphate ◽  
Adhesive Joints ◽  
Polymer Adhesive ◽  
Bond Durability

scholarly journals Investigation of Environmental Degradation on Joint Properties of Polymer Adhesive Joints in Salt Water Environment

2019 ◽  
Vol 11 (4) ◽  
Author(s):  
Shirish Kerur ◽  
Shivakumar S
Keyword(s):  
Vinyl Ester ◽  
Salt Water ◽  
Research Work ◽  
Water Environment ◽  
Adhesive Joints ◽  
Reinforced Plastics ◽  
Double Shear ◽  
Joint Properties ◽  
Polymer Adhesive ◽  
Glass Fibre Reinforced

The objective of research work is to establish the influence of environmental factors such as moisture and temperature on the shear properties of metal and polymer joints. The specimens of metal and polymer joints were prepared with aluminium plate and glass fibre reinforced plastics. Here three types of resins were used for joining the metal and polymer composites viz. epoxy vinyl ester and polyester. The joint specimens were exposed to 80 C temperature and relative humidity of 90% for 25 days in environmental chamber. The single and double shear strength of the joints for ascast and hygrothermal exposed specimens are investigated. The results showed that the strength of hydrothermal specimens decreased about 25%, 18% and 33% for epoxy, vinyl ester and polymer adhesive joints respectively. The result also shows that vinyl ester joints exhibit lower water absorption and property degradation of the joints.

Effects of Cure State on the Ultrasonic Nonlinear Parameter in Adhesive Joints

2000 ◽  
Author(s):  
Guoli Liu ◽  
Jianmin Qu ◽  
Laurence J. Jacobs
Keyword(s):  
Narrow Band ◽  
Harmonic Signal ◽  
Adhesive Joints ◽  
Nonlinear Parameter ◽  
Curing Temperature ◽  
Curing Time ◽  
Curing Conditions ◽  
Polymer Adhesive ◽  
Ultrasonic Techniques ◽  
Transmitted Signal

Abstract The objective of this paper is to characterize the cure state of polymer adhesive joints using nonlinear ultrasonic techniques. To this end, through transmission tests were carried out on joint samples that had been subjected to various curing conditions. In these tests, a 40-cycle harmonic signal was generated by a 2MHz narrow-band PZT transducer as the incident wave. The wave transmitted through the adhesive joint was received with a 4MHz narrow-band PZT transducer. The magnitude of the second order harmonics in the transmitted signal was measured and the corresponding nonlinear parameter β was calculated. A fairly good correlation was observed between the nonlinear parameter and the cure state. It was found that under-curing (lower curing temperature or short curing time) tends to increase the nonlinear parameter.

Characterization of polyacrylic acid modified zinc phosphate crystal conversion coatings

1993 ◽  
Vol 50 (5) ◽  
pp. 917-928 ◽  
Author(s):  
J. L. Wragg ◽  
J. E. Chamberlain ◽  
L. Chann ◽  
H. W. White ◽  
T. Sugama ◽  
...  
Keyword(s):  
Polyacrylic Acid ◽  
Zinc Phosphate ◽  
Conversion Coatings

The Effect of Environment on Adhesion of Shrink-Resist Polymers on Wool

1976 ◽  
Vol 46 (11) ◽  
pp. 796-801 ◽  
Author(s):  
Brett O. Bateup ◽  
John R. Cook ◽  
H. Douglas Feldtman ◽  
Barry E. Fleischfresser
Keyword(s):  
Surface Tension ◽  
Adhesive Joints ◽  
Work Of Adhesion ◽  
Polymer Interface ◽  
Thermodynamic Work ◽  
Polymer Adhesive ◽  
Thermodynamic Work Of Adhesion ◽  
Secondary Bonding

The durability of wool/polymer adhesive Joints in wash liquors of different surface tension was determined by measuring the rate of felting shrinkage of polymer-treated wool sliver and fabric in each liquor. The rate of felting shrinkage increased as the surface tension of the liquor decreased. This trend in the rate of felting shrinkage of polymer-treated wool agreed well with the trend in the magnitude of the thermodynamic work of adhesion of a wool/polymer “adhint” in different liquids, calculated assuming only secondary bonding forces across the wool/polymer interface. Limitations of the theory are discussed

Outline of an Algorithm for Computation of the Strength of Polymer Adhesive Joints

1992 ◽  
Vol 38 (1-2) ◽  
pp. 1-18 ◽  
Author(s):  
A. B. Silberman ◽  
L. M. Pritykin ◽  
V. L. Vakula ◽  
I. I. Silberman
Keyword(s):  
Adhesive Joints ◽  
Polymer Adhesive

Flexible tubular metal-polymer adhesive joints under torsion loading

2021 ◽  
Vol 105 ◽  
pp. 102787
Author(s):  
M.A. Dantas ◽  
R.J.C. Carbas ◽  
E.A.S. Marques ◽  
D. Kushner ◽  
L.F.M. da Silva
Keyword(s):  
Adhesive Joints ◽  
Polymer Adhesive ◽  
Metal Polymer

Numerical study of flexible tubular metal-polymer adhesive joints

2020 ◽  
pp. 1-23 ◽  
Author(s):  
M. A. Dantas ◽  
R. Carbas ◽  
E. A. S. Marques ◽  
M. P. L. Parente ◽  
D. Kushner ◽  
...  
Keyword(s):  
Numerical Study ◽  
Adhesive Joints ◽  
Polymer Adhesive ◽  
Metal Polymer

Development of Smart Nanocontainers With A Zinc Phosphate Core and A pH-Responsive Shell for Controlled Release of Immidazole

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Ananda Jaysing Jadhav ◽  
Sammit Ekanath Karekar ◽  
Dipak Vitthal Pinjari ◽  
Yogesh Gajanan Datar ◽  
Bharat Apparao Bhanvase ◽  
...  
Keyword(s):  
Particle Size ◽  
Polyacrylic Acid ◽  
Zinc Phosphate ◽  
Average Particle Size ◽  
Particle Size Analysis ◽  
Core Material ◽  
Size Analysis ◽  
Average Particle ◽  
Layer By Layer ◽  
Vis Spectroscopy

AbstractA simple and flexible method has been developed to fabricate reversibly switchable nanocontainers (by layer by layer assembly) using zinc phosphate (ZP) nanoparticles as a core material and subsequent deposition of oppositely charged species of polyelectrolyte (polyaniline and polyacrylic acid) and organic corrosion inhibitor (immidazole). Immidazole was entrapped between polyaniline (PANI) and polyacrylic acid (PAA). The PAA nanovalve can control the access of immidazole molecules to and from the nanocontainers. The average particle size of the synthesized nanocontainer was found to be in the range of 250–500 nm. X-ray diffraction (XRD), particle size analysis (PSA), zeta potential, and fourier transform infrared spectroscopy (FTIR) analysis confirms the successful formation of the layered structure of nanocontainers. UV-vis spectroscopy was used to analyze the release rate of immidazole in media of different pH as a function of time. This core-shell nanostructure can have potential applications in corrosion inhibition paint formulation.

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