Epoxy/Zn-Al-CO3 LDH nanocomposites: Curability assessment

被引：28

作者：

Karami, Zohre ^{[1
]}

Aghazadeh, Mustafa ^{[1
]}

Jouyandeh, Maryam ^{[1
]}

Zarrintaj, Payam ^{[2
]}

Vahabi, Henri ^{[3
,4
]}

Ganjali, Mohammad Reza ^{[1
,5
]}

Torre, Luigi ^{[6
]}

Puglia, Debora ^{[6
]}

Saeb, Mohammad Reza ^{[7
]}

机构：

[1] Univ Tehran, Coll Sci, Ctr Excellence Electrochem, Sch Chem, Tehran, Iran

[2] Urmia Univ, Polymer Engn Dept Fac Engn, Orumiyeh, Iran

[3] Univ Paris Saclay, Cent Supelec, Lab Mat Opt Photon & Syst, F-57070 Metz, France

[4] Univ Lorraine, Cent Supelec, LMOPS, F-57000 Metz, France

[5] Univ Tehran Med Sci, Biosensor Res Ctr, Endocrinol & Metab Mol Cellular Sci Inst, Tehran, Iran

[6] Univ Perugia, Dept Civil & Environm Engn, Str Pentima 4, I-05100 Terni, Italy

[7] Inst Color Sci & Technol, Dept Resin & Addit, POB 16765-654, Tehran, Iran

来源：

PROGRESS IN ORGANIC COATINGS | 2020年 / 138卷

关键词：

Cure index; Epoxy; Layered double hydroxide; Zn-Al; Carbonate anion; LAYERED DOUBLE HYDROXIDES; CURE-INDEX; EPOXY/FE3O4; NANOCOMPOSITES; EPOXY ADHESIVES; COATINGS; ZN; CHEMISTRY; BEHAVIOR; INTERCALATION; NANOPARTICLES;

D O I：

10.1016/j.porgcoat.2019.105355

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this work, the curability of epoxy nanocomposite consisting of Zn-Al layered double hydroxide (LDH) intercalated with carbonate anion (CO3) was studied via nonisothermal differential scanning calorimetry (DSC) by the aid of Cure Index (CI). The hydrothermal-assisted constant pH coprecipitation method was used in synthesis of lamellar LDH and the resulting structure was confirmed by FTIR, XRD and TGA/DTGA analyses. From the CI point of view, the cure state of epoxy/Zn-A-CO3-LDH nanocomposite was Poor at heating rates of 2 (low) and 10 (high) degrees C/min. By contrast, crosslinking of epoxy resin was facilitated in the presence of Zn-Al-CO3-LDH at intermediate heating rates of 5 and 7 degrees C/min due to intensified ring opening reaction of epoxy under the Lewis acid effect of Zn metal, which changed the cure label of epoxy/Zn-Al-CO3-LDH nanocomposite from Poor to Excellent.

引用

页数：6

共 58 条

[51] Transparent nanocomposite coatings based on epoxy and layered double hydroxide: Nonisothermal cure kinetics and viscoelastic behavior assessments [J].