AIC's 52nd Annual Meeting

Epoxy is one of the most common materials used to complete antique glass, but it is a non-recoverable material, so an attempt is being made to find another recoverable material that can be used for this purpose.

Paraloid is actually used in assembling archaeological glass, but it is difficult to use it for completion due to the many number of air bubbles present in the paraloid mold. The study aims to identify how to produce a paralloid mold without air bubbles and use it to completion glass. Paraloid 44 was chosen because it can withstand high temperatures, as it does not become flexible except at a temperature of 60° degrees.

The main problem lies in the presence of many air bubbles in the paralloid mold, which causes the solvent to volatilize quickly, so the solvent is worked to volatilize gradually. This was done by placing the paraloid in the mold first, then placing it in the refrigerator. After a while, it was taken out of the refrigerator and the lid of the mold was uncovered for a little while and left for a while, then the lid was completely uncovered and left until it hardened well. Thus, molds of the paraloid material were obtained without the many air bubbles.

An experimental study was conducted in which thermal, moisture, and moisture aging were performed, as well as light aging using UV. To evaluate the results before and after aging, ATR analysis was used, and color change was measured using a colorimeter.

Applying the Paralloid 44 to completion of archaeological glass object dating back to the early Islamic period, Which is missing part in a weak place and needs protection.