纳米SiO_2鞣革方法和鞣性的研究

Study on tanning methods and tanning characteristic of nano-SiO_2

以易于在水中分散的聚合物或改性油脂 (引入亲水基团 ) ,作为纳米粒子前驱体的分散载体 ,借助聚合物或改性油脂的分散、渗透、扩散作用 ,将纳米粒子前驱体引入革纤维间隙中 ;然后在特定pH条件下 ,前驱体水解原位 (in-situ)产生无机纳米粒子 ,通过无机纳米粒子和蛋白质间的有机 -无机杂化 ,实现了对生皮的鞣制。该工艺路线简单、易行 ,成革的收缩温度高于 95℃。

A polymer or modified oil which is easy to be dispersed into water used as dispersion supporter, a precursor containing nano-SiO 2 can be introduced into leather via penetration and diffusion of supporter. This nano-precursor will in-situ produce nano- SiO 2 particles under special pH value. Study from DSC shows that leather treated by means of protein -SiO 2 organic-inorganic nano-hybrid,the shrinkage temperature of final leather can reach 95.4℃. In comparison with traditional chromium leather-making, nano- SiO 2 tannage is simple and feasible.