Determining the Value of Surface Free Energy on the Basis of the Contact Angle

Section: Measurement Of Contact Angle and Free Surface Energymentioning

confidence: 99%

Operational Properties of Anti-graffiti Coating Systems for Rolling Stock

Pasieczyński¹,

Radziszewska-Wolińska²,

Radek³

2018

“…1). Properly formed adhesive joints elements' top layer, obtained with the "drop" method, as a result of the final machinery treatment and exploitation processes, provides maximum surface durability and therefore long exploitation indestructibility of the analyzed connection [7,8].…”

Section: Characteristics Of the Surface Layermentioning

confidence: 99%

Possibilities of Belzona Adhesive Joints Application for Austenitic Steel Used in Ship Constructions

Jurczak¹,

Jurczak²

2017

This paper presents the results of research on adhesive joints durability properties of ship austenitic steel done with the use of the latest adhesives -glues: a composite one from Belzona company, described as 1111 and 1212 as well as a Hysol 9466 adhesive, produced by Hysol. The 1.4301 (304) and 1.3964 (2xx) steels used for shipbuilding were single-lap adhesive joint, with varying degree of edges' chamfering and offsetting (with a deflection). This type of alternative connections will provide protection and temporary structure's protection in case of emergency cracking (due to corrosion or an impact) of the examined steel or welded joints of the ship's construction and hull's sheathings. The adhesive joints of the tested steel were made in laboratory conditions (according to the technological card) as well as outside the laboratory, hereinafter called as the emergency ones with the use of Belzon 1212. Adhesive joints of 304 and 2xx steel using Hysol 9466 adhesive made in laboratory conditions showed better durability properties than the ones made with the use of Belzona 1111 composite. However, in case of emergency connections the bonding strength as well as the bonding time (hardening) are important factors. The use of the special Belzona 1212 (for wet surfaces) gives a relatively good durability of approx. 20MPa with a much shorter (up to 20 minutes) hardening time and does not require such an accurate surface preparation as the adhesive joints made with the use of Hysol 9466.

“…A factor which is crucial to adhesive joint strength, particularly in bonding FDM-manufactured substrates, is proper surface energy. Surface energy is determined by contact angle measurements using different probe liquids [11].…”

Section: Introductionmentioning

confidence: 99%

Influence of Post-Processing on Accuracy of FDM Products

Kuczko¹,

Górski²,

Wichniarek³

et al. 2017

This paper presents the assessment of the rapid prototyping finishing techniques for printed components. The aim of the study was to compare the element printed with FDM technology before and after the treatment, using 3D scanning techniques. The object was scanned right after manufacturing, then it was subjected to finishing treatment and 3D-scanned again. The assessment of the results was performed using the GOM Inspect software, based on a comparison between scans and nominal model.