用于文物清洁的多功能水凝胶研究进展

文物的清洁与修复是一项精细而富有挑战性的工作。许多文物不仅具有粗糙和坑洼的表面,还对有机溶剂或水性溶剂表现出较强的敏感性。传统的清洁方法已无法达到良好的清洁效果,甚至会对文物造成损坏。水凝胶材料可以有效控制溶剂释放,且对文物表面污渍具有良好的清洁效果,因而备受修复人员关注。比较分析了传统清洁方式与水凝胶清洁方式的特点,概括阐述了水凝胶结构和分类,并列举了不同种类水凝胶的文物清洁案例,最后提出了水凝胶当前存在的问题和未来发展趋势。

SYNTHESIS OF BOWL-LIKE PARTICLES BY EMULSION POLYMERIZATION AND RELEASE BEHAVIOR OF SOLVENT FROM THE PARTICLES

Poly(styrene-glycidyl methacrylate) particles having bowl-shaped hollow structures were synthesized by swollen seed emulsion polymerization. The PS emulsion synthesized through soap-free emulsion polymerization was swollen by toluene, and then the mixture of second monomers was added under polymerization condition. So a thin shell of poly(styrene-glycidyl methacrylate) cross-linked by triethylene glycol diacrylate was formed around the swollen PS particle. The bowl-shaped particles were obtained after the collapsing of the thin shell when the toluene emanated from the particles, but the shapes were effected by the degrees of cross-linking. The shape of the particles was observed by SEM. The release behavior of solvent from the particles was examined by TG.

关于我国汽车水性涂料的前景及其环保性能的探讨

与传统溶剂型涂料相比较，汽车水性涂料在环保、安全、节能、经济、原料等方面具有突出的优势。在此，简单介绍我国汽车水性中涂和面漆的最新研究状况，并对其应用前景进行展望。