Two‐step preparation of phosphorus‐containing organoclay and its effect on fire‐resistant and mechanical properties of the flame‐retardant polyethylene composite

In this study, a nanohybrid based on montmorillonite (oMMT2) was prepared through a two‐step method using Arquad MCB‐80 and 9,10‐dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide (DOPO) as intercalation agents. The nanohybrid exhibited a basal spacing of 31.5 Å, which contained approximately 12.3% of Ar...

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Bibliographic Details
Published in:Journal of applied polymer science 2024-08, Vol.141 (32), p.n/a
Main Authors: Thi, Nhung Hac, Van Hoang, Toan, Doanh, Truong Cong, Oanh, Ho Thi, Dat, Doan Tien, Nguyen, Ha Tran, Le‐Nhat‐Thuy, Giang, Tran, Quang Vinh, Hoang, Mai Ha, Van Nguyen, Tuyen
Format: Article
Language:English
Subjects:
Aluminum
clay
composites
Fire resistance
flame retardance
Mechanical properties
Montmorillonite
Nanocomposites
Phosphorus
Polyethylene
Polyethylenes
polyolefins
Reagents
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Summary:In this study, a nanohybrid based on montmorillonite (oMMT2) was prepared through a two‐step method using Arquad MCB‐80 and 9,10‐dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide (DOPO) as intercalation agents. The nanohybrid exhibited a basal spacing of 31.5 Å, which contained approximately 12.3% of Arquad MCB‐80 and 31.6% of DOPO. Various amount of oMMT2 nanohybrid was incorporated into a flame‐retardant polyethylene system containing aluminum trihydroxide and red phosphorus with a constant total additive content of 20 wt%. The dispersibility of oMMT2 in the composite matrix was evaluated by energy dispersive x‐ray mapping and x‐ray diffraction analyses. At a content of 3 wt% in the nanocomposite, oMMT2 showed a highly exfoliated state, while at a 5% content, a partially exfoliated and intercalated state was observed. A synergistic flame‐retardant effect between the nanohybrid and the mixture of aluminum trihydroxide and red phosphorus was found. The nanocomposite loading 3 wt% oMMT2 demonstrated the best flame retardancy, achieving a V‐0 rating of the vertical burning test with a limiting oxygen index of 27.6%. Moreover, the addition of the low oMMT2 contents (≤3 wt%) improved the mechanical properties of the flame‐retardant composite. Preparation process of DOPO‐containing organoclay and its synergistic flame retardant mechanism with aluminum hydroxide and red phosphorus
ISSN:0021-8995
1097-4628
DOI:10.1002/app.55758