發(fā)布時間：2018-06-05 14:00

  本文選題：有機-無機雜化材料 + 環(huán)梯形聚苯基硅倍半氧烷�。� 參考：《有機化學》2017年07期

【摘要】：以環(huán)梯形聚苯基硅倍半氧烷(CL-PPSQ)為原料,采用HNO_3-(CH_3CO)_2O硝化體系,在不同的條件下對其進行硝化,制備得到含硝基基團的NO_2-PPSQ.使用GPC、TGA、~1H NMR、FTIR、元素分析等測試手段對硝化產(chǎn)物進行表征.結(jié)果表明,75%HNO_3-(CH_3CO)_2O硝化過程溫和,硝化能力適中,制備得到分子鏈不斷裂且實現(xiàn)了苯基完全一硝化的硝化產(chǎn)物.對不同硝化試劑的硝化機理進行了分析,在發(fā)煙硝酸、HNO_3-H_2SO_4、KNO_3-H_2SO_4中,NO_2~+為硝化活化劑,硝化能力強,會導致CL-PPSQ分子鏈斷裂;對于HNO_3-(CH_3CO)_2O體系,CH_3COONO_2為主要的硝化活化劑,硝化能力適中.
[Abstract]:The nitration of CL-PPSQs containing nitro groups was carried out by nitration of CL-PPSQs with HNO_3-(CH_3CO)_2O nitration system under different conditions, and the nitro groups were synthesized from CL-PPSQs containing nitro groups. The nitrifying products were characterized by GPC-TGA 1H NMR-FTIR and elemental analysis. The results showed that the nitrification process was mild, the nitrification ability was moderate, and the molecular chain was not broken and the complete phenyl mononitration was realized. The nitrification mechanism of different nitrifying reagents was analyzed. In HNO3-H2SO4 / KNO3-H2SO4, the nitrification activator was found to be the nitrifying activator, and the nitrification ability was strong, which led to the CL-PPSQ molecular chain break, and for the HNO_3-(CH_3CO)_2O system, CH3COONOsp2 was the main nitrification activator and the nitrification ability was moderate.
【作者單位】： 北京理工大學材料學院國家阻燃材料工程技術(shù)研究中心;
【基金】：國際科技交流合作(No.S2014ZR0465) 國家自然科學基金(No.51273022)資助項目~~
【分類號】：O634.41

【相似文獻】

相關(guān)期刊論文 前10條

1 張輝,姜文勇,劉波;風化煤腐植酸硝化反應研究[J];腐植酸;2000年04期

2 宋敬埔;;評硝化反應最新專著——《硝酰陽離子理論》[J];爆破器材;2007年01期

3 李小青,杜曉華,鄭鹛,陳盛,徐振元;綠色硝化反應研究進展[J];化工進展;2005年10期

4 李方正;;苯的硝化反應演示法改進[J];四川師院學報(自然科學版);1983年02期

5 林則群;鄭q，

本文編號：1982228