In this paper, unsaturated polyester type GFRP composite was treated with phenylsilane type coupling agents by migration technology, then the mechanical properties were measured. The results show that the mechanical p...In this paper, unsaturated polyester type GFRP composite was treated with phenylsilane type coupling agents by migration technology, then the mechanical properties were measured. The results show that the mechanical properties of GFRP composite are greatly improved but the other properties are little affected after being treated by phenylsilane type coupling agents (named as WGD type coupling agents).展开更多
4-hydroxybenzoic acid was synthesized by one pot method using polymer-bonded β-aminopropionic acid-2-β-cyclodextrin as a catalyst.by which the selectivity for 4-hydroxybenzoic acid is 87%. A possible carboxylation m...4-hydroxybenzoic acid was synthesized by one pot method using polymer-bonded β-aminopropionic acid-2-β-cyclodextrin as a catalyst.by which the selectivity for 4-hydroxybenzoic acid is 87%. A possible carboxylation mechanism in the presence of the title catalyst is discussed. Also.the recovery and reusage of the catalyst is studied.展开更多
A kind of hydroxyapatite (HA) high-porous ceramic (HPC) which is used as pharmaceutical carrier for spinal tuberculosis treating is investigated, the structure of HPC is analyzed and physicochemical properties are det...A kind of hydroxyapatite (HA) high-porous ceramic (HPC) which is used as pharmaceutical carrier for spinal tuberculosis treating is investigated, the structure of HPC is analyzed and physicochemical properties are determined. Experiments and clinical application show that when HPC carrying antituberculosis drug was imbedded in the tuberculosis focus, the drug in effective concentration can continuously be released for 27 weeks, also, the drug concentration achieves high local level but low systematic level, thus the curative effect can distinctly enhanced.展开更多
文摘In this paper, unsaturated polyester type GFRP composite was treated with phenylsilane type coupling agents by migration technology, then the mechanical properties were measured. The results show that the mechanical properties of GFRP composite are greatly improved but the other properties are little affected after being treated by phenylsilane type coupling agents (named as WGD type coupling agents).
文摘4-hydroxybenzoic acid was synthesized by one pot method using polymer-bonded β-aminopropionic acid-2-β-cyclodextrin as a catalyst.by which the selectivity for 4-hydroxybenzoic acid is 87%. A possible carboxylation mechanism in the presence of the title catalyst is discussed. Also.the recovery and reusage of the catalyst is studied.
文摘A kind of hydroxyapatite (HA) high-porous ceramic (HPC) which is used as pharmaceutical carrier for spinal tuberculosis treating is investigated, the structure of HPC is analyzed and physicochemical properties are determined. Experiments and clinical application show that when HPC carrying antituberculosis drug was imbedded in the tuberculosis focus, the drug in effective concentration can continuously be released for 27 weeks, also, the drug concentration achieves high local level but low systematic level, thus the curative effect can distinctly enhanced.
