马来酸单丁酯对纳米碳酸钙表面改性研究

Study on Surface Modification of Nano-CaCO_3 by Monobutyl Maleate

研究了将纳米CaCO3粒子分散在有机相正丁醇中,再加入马来酸单丁酯对纳米CaCO3粒子表面进行改性的新工艺,并利用TEMF、T IR、TG等分析方法对纳米CaCO3进行测试与表征,探讨了由正丁醇与马来酸单丁酯协同改性纳米CaCO3粒子的改性机理。结果表明,纳米CaCO3粒子在用正丁醇和马来酸单丁酯协同改性后,分散稳定性得到了进一步提高。当改性纳米CaCO3粒子的含量在5%左右时,能够对PS基体起到增韧的效果。

A new surface modification method for nano-CaCO3 particles using n-monobutyl maleute and n-butanol as modifying agents was investigated. Transmission electron microscopy （TEM）, Fourier transform infrared specuoscopy （ FT IR）, thermogravimetric （TG） and etc were employed to characterize the products. The mechanism of modifying nano- CaCO3 particles by n-butanol and n-monobutyl maleate coordinately was discussed. The dispersion stability of nano- CaCO3 particles was increased after modification by n-butanol and n-monobutyl maleate. The toughness of nano-CaCO3/ PS composites was improved when blended with about 5 % modified nano-CaCO3.