An intumescent flame retardant system using beta-cyclodextrin as a carbon source in polylactic acid (PLA)
文献类型：会议论文
| 作者 | Feng, Jian-Xiang; Su, Sheng-Pei; Zhu, Jin |
| 出版日期 | 2011 |
| 会议日期 | SEP 17-20, 2010 |
| 关键词 | AMMONIUM POLYPHOSPHATE THERMAL-DEGRADATION ESTER FORMATION PENTAERYTHRITOL MECHANISM POLYMERS AGENT STARCH POLYETHYLENE FLAMMABILITY |
| 卷号 | 22 |
| 期号 | 7 |
| DOI | 10.1002/pat.1954 |
| 英文摘要 | In this paper, beta-cyclodextrin (CD) was used as effective green carbon source to replace pentaerythritol (PER) in an intumescent flame retardant (IFR). The combination of CD with traditional acid resource ammonium polyphosphate (APP) and/or blowing agent melamine (MA) at different weight ratios exhibited outstanding char-forming ability. It was demonstrated that strong interactions occurred in APP-CD and MA-CD systems through thermogravimetric analysis (TGA). Mechanisms of esterification between APP and CD or dehydration between MA and CD were discussed. The APP/MA/CD complexes showed doubled char residue of those calculated based on three single components in nitrogen atmosphere. For instance, the char residue of CD-APP (at the weight ratio of 1:1) complex was 38 wt% at 700 degrees C, while the calculated char formation was only 19 wt% in N-2. After addition of these complexes into polylactic acid (PLA), the flammability of these PLA resins was evaluated by limited oxygen index (LOI) and vertical combustion (UL-94). The TGA results indicated that the cyclodextrin mixed with APP and MA as a green char agent demonstrated outstanding char formation ability for PLA. When the complex contained CD/APP/MA at weight ratio of 1/2/1 and the addition amount of complex in PLA was 20 wt%, the PLA composites showed LOI values of 34.2 and passed UL 94 V0 rating, and the char residue of the PLA composite was 17.4 wt% at 700 degrees C while only 7.4 wt% was achieved for the calculated composition. Copyright (C) 2011 John Wiley & Sons, Ltd. |
| 学科主题 | Polymer Science |
| ISSN号 | 1042-7147 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/23688]  |
| 专题 | 会议专题 会议专题_会议论文 |
| 推荐引用方式 GB/T 7714 | Feng, Jian-Xiang,Su, Sheng-Pei,Zhu, Jin. An intumescent flame retardant system using beta-cyclodextrin as a carbon source in polylactic acid (PLA)[C]. 见:. SEP 17-20, 2010. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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