Increased storage stability of marble adhesive based on unsaturated polyester resin. (February 2023)

• Record Type: Journal Article
• Authors: Taheri, Maryam; Jahanfar, Mehdi; Ogino, Kenji
• Is Part Of: International journal of adhesion & adhesives. Volume 122(2023)
• Publication Date: 2023-02
• Subjects: Marble adhesive -- Unsaturated polyester resin -- N, N- dimethyl aniline (DMA -- NL-63) -- N -- N-Dimethylparatoluidine (DEP -- NL-65) -- Ethoxylates of p-toluidine (pergaquick A-150) -- Hydroquinone -- 1, 4-Naphthoquinone; Adhesion -- Periodicals; Adhesives -- Periodicals; Adhésion (Physique) -- Périodiques; Adhésifs -- Périodiques; Adhesie; Kleefstoffen; Adhesion; Adhesives; Periodicals; 668.3
• DOI: 10.1016/j.ijadhadh.2023.103331
• Languages: English
• ISSNs: 0143-7496

Abstract

Abstract: In this paper, different combinations of accelerators and inhibitors were used to cure marble adhesive based on an unsaturated polyester resin. N, N- dimethyl aniline (DMA, NL-63), N, N-dimethylparatoluidine (DEP, NL-65), and ethoxylates of p-toluidine (Pergaquick A150 p.m.) were used as amine accelerators. Benzoyl peroxide (BPO) was used as a medium temperature decomposition initiator. Hydroquinone and 1, 4- naphthoquinone were used as polymerization inhibitors. To study the curing behavior, gel time, pseudo-adiabatic exothermic, and storage stability measurements have been used. The low-temperature initiator decomposition rate has also influenced the exothermic peak and cure rate at various accelerators. It is shown in this study that for N, N- dimethyl aniline (DMA, NL-63), N, N-dimethylparatoluidine (DEP, NL-65) and Ethoxylates of p-toluidine (Pergaquick A-150) promoters systems, with the increasing of pergaquick A-150 concentration, namely high reactive accelerator, causes the exothermic parameters sharply change. It might be due to the more reactive nature of pergaquick A-150 in comparison with other accelerators reactivity. Due to this study, using a dual system of inhibitor, the storage stability of marble adhesive was increased. Now we can say, a judicious choice of a dual inhibitor and a dual accelerator can prevent short time exothermic reactions with high storage stability, so a dual system of the inhibitor can be much more effective than a single one.