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有機/無機復合阻燃劑的制備表征及阻燃性能研究

時間:2019-06-02 19:08來源:畢業論文
一種有機阻燃劑——季戊四醇雙磷酸蜜胺鹽和季戊四醇多聚磷酸蜜胺鹽與幾種無機物復合后,得到的復合阻燃劑的表征和阻燃性能。首先,由不同比例的季戊四醇、三聚氰胺和磷酸(或

摘要: 本文主要研究了一種有機阻燃劑——季戊四醇雙磷酸蜜胺鹽和季戊四醇多聚磷酸蜜胺鹽與幾種無機物復合后,得到的復合阻燃劑的表征和阻燃性能。首先,由不同比例的季戊四醇、三聚氰胺和磷酸(或聚磷酸),反應生成的產物進行表征,從中,各選擇一組表征性能較好的n(磷酸) :n(季戊四醇) :n(三聚氰胺)=2:1:1 反應生成的季戊四醇雙磷酸蜜胺鹽(MPP2)和 n(聚磷酸):n(季戊四醇):n(三聚氰胺)=2:1:3 反應生成的季戊四醇多聚磷酸蜜胺鹽(PMP6)。由于MPP2 和PMP6 的產物紅外圖譜基本一致,對MPP2 添加不同比例的氫氧化鋁,發現氫氧化鋁的含量越多,復合阻燃劑表征的性能越好,即殘余質量越多。而對于 PMP6,則選擇分別添加 20%的氫氧化鋁、氧化鑭和氧化鈰通過機械混合,制成復合阻燃劑,對復合阻燃劑進行紅外和熱重表征,發現 PMP6 添加 20%的氧化鈰表征性能最好。最后,將 MPP2、PMP6、MPP/Al(OH)3(1%)、MPP/Al(OH)3(5%)、MPP/Al(OH)3(10%)、MPP/Al(OH)3(20%)、PMP/Al(OH)3、PMP/ La2O3和PMP/ CeO2進行氧指數的測定。當阻燃劑添加得越多,PP 的成炭量越多,氧指數越高,阻燃性能越好。這些樣品中,MPP2、PMP6、PMP/ La2O3和PMP/ CeO2添加10%在PP 中,氧指數比其他樣品在PP 中高,阻燃性能也比其他阻燃劑更好。其中,復合阻燃劑中,添加氧化鈰的阻燃效果最好。同時,也研究了復合阻燃劑對 PP 材料力學性能的影響,MPP/Al(OH)3(5%)和PMP/ La2O3阻燃劑提高了 PP 的力學性能,其他阻燃劑都降低了 PP 材料的力學性能。所以,可根據材料的不同需求,來選擇合適的阻燃劑。 35964
畢業論文關鍵詞: 復合阻燃劑;季戊四醇雙磷酸蜜胺鹽;季戊四醇多聚磷酸蜜胺鹽;阻燃性能;  
源`自*六)維[論*文'網www.aftnzs.live

The preparation, characterization and flame retardant performance study of an organic/inorganic composite flame retardant
Abstract:This paper mainly studies a kind of organic flame retardant agent, pentaerythritol phosphate melamine salt and pentaerythritol melamine phosphate, compounded with several inorganic substances. Then this paper studies the characterization and flame  retardant properties of the composite were prepared. Frist, reaction products made by varying the ratio of pentaerythritol, melamine and phosphoric acid (or  poly phosphoric acid), were characterized. From these reactions, we choose pentaerythritol phosphate melamine salt  (MPP2)reacted by n(phosphoric acid):n(pentaerythritol):  n(melamine)=2:1:1 and pentaerythritol melamine phosphate (PMP6)reacted by n(poly phosphoric acid):n(pentaerythritol):n(melamine)=2:1:3 which the performance of characterization is better. As a result of infrared spectra of MPP2 and PMP6 are basically the same, the aluminum hydroxide MPP2 adding different proportions, found that the more content of aluminum hydroxide, the better performance of composite flame retardant characterization,  i.e. more residual quality.  As for PMP6, select were added 20% aluminum hydroxide, lanthanum oxide and  cerium oxide by mechanical mixing. For composite flame retardant, infrared and thermal characterization of composite flame retardant, found that 20% cerium addition of PMP6 has the best performance characterization.  Finally, the oxygen index of  MPP2,  PMP6,MPP/Al(OH)3(1%),  MPP/Al(OH)3(5%),  MPP/Al(OH)3(10%),  MPP/Al(OH)3(20%),  PMP/Al(OH)3,  PMP/ La2O3  and PMP/ CeO2  was measured. When the more flame retardant  agent is added, the amount of carbon in PP is higher, the oxygen index is higher, the flame retardant performance is better. In these samples, MPP2, PMP6,  PMP/ La2O3  and  PMP/ CeO2  were added 10% in PP, oxygen index was higher than other samples in PP and  the flame retardant property was better than other flame retardants.  Among them, the flame retardant effect of cerium oxide was the best in the composite flame retardants.  At the same time, the effect of the composite flame retardant on the mechanical properties of PP was studied, and the mechanical properties of PP were improved by MPP/Al(OH)3(5%) flame retardant or  PMP/ La2O3  flame retardant. The mechanical properties of  PP were decreased.  So, according to the different requirements of the material, we should choose suitable flame retardant. 有機/無機復合阻燃劑的制備表征及阻燃性能研究:http://www.aftnzs.live/huaxue/20190602/34199.html
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