本文選題：有機(jī)-無(wú)機(jī)雜化材料 + 環(huán)梯形聚苯基硅倍半氧烷��； 參考：《有機(jī)化學(xué)》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(duì)其進(jìn)行硝化,制備得到含硝基基團(tuán)的NO_2-PPSQ.使用GPC、TGA、~1H NMR、FTIR、元素分析等測(cè)試手段對(duì)硝化產(chǎn)物進(jìn)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(shí)現(xiàn)了苯基完全一硝化的硝化產(chǎn)物.對(duì)不同硝化試劑的硝化機(jī)理進(jìn)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(qiáng),會(huì)導(dǎo)致CL-PPSQ分子鏈斷裂;對(duì)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(xué)材料學(xué)院國(guó)家阻燃材料工程技術(shù)研究中心;
【基金】：國(guó)際科技交流合作(No.S2014ZR0465) 國(guó)家自然科學(xué)基金(No.51273022)資助項(xiàng)目~~
【分類號(hào)】：O634.41

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本文編號(hào)：1982228