以磷系阻燃劑與石墨協同效應改善聚甲基丙烯酸甲酯之燃燒性質與功能性分析

The Study of Improving the Flammability and Functional Analysis of Polymethylmethacrylate by using Phosphorus Flame Retardant Synergies Graphite

曾冠勛(Guan-Syun Zeng)

指導教授 ： 鄧道興

國立臺北科技大學/工程學院/有機高分子研究所/碩士(2014年)

摘要

本研究是將石墨利用Hummers法改質得到氧化石墨，再將氧化石墨與DOPO阻燃劑進行反應合成DGO，並藉由FTIR、拉曼、元素分析、X-ray、SEM及AFM來進行分析。
本研究複合材料在固定粉體的添加量(30wt.%)下，改變粉體比例，以溶液法製備PMMA/AP/NG/DGO/石墨烯複合材料，乾燥後再以熱壓成型製成所需之試片，來探討其燃燒性質以及功能性。以SEM來觀察粉體在複合材料中的分佈狀況。高電阻及低電阻測試儀來探討其導電性。L.O.I及UL-94來探討以不同比例粉體所製備複合材料之燃燒性質，發現多種粉體混合添加之複合材料其阻燃性質優於添加單一粉體之複合材料。紅外線熱影像溫差測試分析發現添加石墨粉體之複合材其升溫速率及降溫速率皆有明顯提升。迅速熱傳導測定儀來測量複合材料熱傳導係數，發現熱傳導係數隨石墨粉體添加量增加而明顯提升，而且石墨粉體中石墨烯比例越高熱傳導係數也提升越多。

關鍵字

聚甲基丙烯酸甲酯 ； 聚磷酸銨 ； 石墨 ； 石墨烯

並列摘要

In this study, the graphite was modifed by Hummers method to form the graphite oxide, then it was combined with DOPO flame retardant to obtain the DGO powder, we understand that the synthesis of DGO powder was successfully completed. Through the investigation of, fourier transform infrared spectroscopy (FTIR), Raman spectra, energy dispersive spectrometer (EDS), X-ray diffraction, scanning electron microscope (SEM), atomic force microscope (AFM).
The PMMA/AP/NG/DGO/graphene composite was obtained by mixing the various ratios of DGO, Ammonium polyphosphate (AP), graphite and graphene powder in the Polymethyl methacrylate(PMMA), while the weight percentage of powders was fixed at 30 percent. The composite was dried and fabricated by thermo-forming, first then its functional properties and flammability were studied.
The evolution of cross-section structure, powder dispersion, electrical conductivity and thermal conductivity of sample were characterized by SEM, resistance meter and quick thermal conductivity meter. It was found that the flammability of sample as mixing various powders was better than it was mixing the single powder through the investigation of L.O.I and UL-94 detecting. The heating and cooling rate of sample with mixing graphite powder was raised as obtained by infrared thermal imager examing. The thermal conductivity was raised while the ratio of DGO powder was increased. Furthermore, the higher graphene ratio, the higher thermal conductivity.

並列關鍵字

Polymethyl Methacrylate ； Ammonium Polyphosphate ； Graphite ； Graphene

參考文獻

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