一种含氨基苯基硅油的基于DOPO的化合物用于降低聚碳酸酯的火灾危险性

A DOPO-Based Compound Containing Aminophenyl Silicone Oil for Reducing Fire Hazards of Polycarbonate.

作者信息

Song Xiaoqing, Xu Wendi, Cai Boyu, Wang Luze, Luo Zhonglin, Wang Biaobing

机构信息

Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China.

出版信息

Materials (Basel). 2023 Feb 9;16(4):1449. doi: 10.3390/ma16041449.

DOI:10.3390/ma16041449

PMID:36837079

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9963052/

Abstract

A novel P/N/Si-containing flame retardant (marked as DASO) was synthesized through an Atherton-Todd reaction between 9,10-dihydro-9-oxa-10-phospha-phenanthrene-10-oxide and aminophenyl silicone oil, and further used for reducing fire hazards of polycarbonate (PC). The chemical structure of DASO was verified via FTIR, H, and P NMR. Upon the incorporation of 2 wt% DASO, the FRPC composite achieved a high limiting oxygen index (LOI) of 32.2% and a desired UL-94 V-0 rating. In this case, the peak heat release rate (PHRR) and total smoke production (TSP) were reduced by 26% and 44% as compared with the pure PC, respectively. The improved fire safety contributed to the flame retardant roles of DASO in both the condensed phase and gas phase. The presence of DASO promoted the formation of dense and highly graphited char layer in the condensed phase, and released non-combustible gases and phosphorus-containing radicals in the gas phase. Furthermore, the FRPC composites displayed comparable elongation at break but a slightly reduced tensile and impact strength.

摘要

通过9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物与氨基苯基硅油之间的Atherton-Todd反应合成了一种新型含磷/氮/硅阻燃剂（标记为DASO），并将其进一步用于降低聚碳酸酯（PC）的火灾危险性。通过傅里叶变换红外光谱（FTIR）、氢核磁共振（¹H NMR）和磷核磁共振（³¹P NMR）对DASO的化学结构进行了验证。当加入2 wt%的DASO时，阻燃PC复合材料的极限氧指数（LOI）达到32.2%，并获得了理想的UL-94 V-0等级。在这种情况下，与纯PC相比，峰值热释放速率（PHRR）和总烟雾产生量（TSP）分别降低了26%和44%。火灾安全性的提高归因于DASO在凝聚相和气相中的阻燃作用。DASO的存在促进了凝聚相中致密且高度石墨化的炭层的形成，并在气相中释放出不可燃气体和含磷自由基。此外，阻燃PC复合材料的断裂伸长率相当，但拉伸强度和冲击强度略有降低。