摘要
采用硅烷偶联剂γ-氨丙基三乙氧基硅烷(KH550)对埃洛石纳米管(HNTs)进行表面改性,制得了改性埃洛石(mHNTs),并利用红外光谱和热重分析对其表征,测得KH550在埃洛石上的接枝率为6%。通过溶剂法合成了苯胺型苯并噁嗪单体(BOZ),然后将mHNTs分散在BOZ中,得到了改性埃洛石掺杂质量分数为0、1.7%、5%、7%、10%的5种埃洛石型苯并噁嗪体系,依次为1-BOZ、2-BOZ、3-BOZ、4-BOZ、5-BOZ。用红外光谱、热重分析和扫描电镜对其进行了表征。结果表明:mHNTs均匀地分散在单体中,提高了苯胺型苯并噁嗪的耐热性和热稳定性,固化温度也明显地降低。其中mHNTs的添加量为7%时,残炭率提高了8%,热分解温度升高了7℃,固化温度降低了10.6℃。
Halloysite nanotubes is surface modified by KH550. Using infrared spectroscopy and thermal gravimetric analysis,the materialsproperties are characterized and the grafting rate of KH550 on the halloysite is 6%. Aniline type benzoxazine monomer （BOZ） is synthesized by solvent method, then the modified halloysite is uniformly dispersed in the aniline type benzoxazine monomer. The results show that there are five kinds of halloysite benzoxazine monomer systems with 0,1.7% ,5% ,7% , 10% modified halloysite doping content,which are expressed as 1 -BOZ,2 -BOZ,3 -BOZ,4 -BOZ,5 -BOZ. The five kinds of systems are characterized by infrared spectroscopy, thermal gravimetric analysis and scanning electron microscopy. Results show that the modified halloysite is uniformly dispersed in the monomer, which can effectively improve the heat resistance and thermal stability of the aniline type benzoxazine, and the curing temperature is obviously reduced. When the content of modified halloysite is 7% , the carbon residual rate is increased by 8% ,the thermal decomposition temperature increases by 7 ℃ ,and the curing temperature decreases by 10.6 ℃.
作者
李盼盼
周沛
焦玉春
陈香萌
徐丽
LI Panpan ZHOU Pei JIAO Yuchun CHEN Xiangmeng XU Li(School of Chemical Engineering and Energy , Zhengzhou University , Zhengzhou 450001 , China)
出处
《河南化工》
CAS
2017年第2期27-31,共5页
Henan Chemical Industry
