Hybrid materials were prepared using a silane coupling agent, tetraethoxysilane （ TEOS ） as the precursor, dilute hydrochloric acid as the catalyst, and epoxy as the matrices. The films coated with hybrid materials ...Hybrid materials were prepared using a silane coupling agent, tetraethoxysilane （ TEOS ） as the precursor, dilute hydrochloric acid as the catalyst, and epoxy as the matrices. The films coated with hybrid materials were expected to improve abrasion resistance and mechanical properties. The morphology, mechanical properties, adhesion, and abrasion resistance of the polyethylene terephthalate （PET） films were characterized using an atomic force microscope, a tensile testing machine, a bagger knife, and a reciprocating fabric abrasion tester. The result of research indicated that the modification significantly affected the abrasion resistance and roughness. The-tensile strength and abrasion resistance of the modified PET films increased by 40% and 50% respectively at 3 % TEOS mass fraction.展开更多
采用乙炔等离子体浸没离子注入与沉积技术(P III-D)在医用涤纶缝合环材料表面沉积了一层类金刚石(DLC)薄膜。细菌黏附实验的结果证明沉积了类金刚石薄膜后的表面对五种细菌——金黄色葡萄球菌(S taphy lococcus aureus,SA)、表皮葡萄球...采用乙炔等离子体浸没离子注入与沉积技术(P III-D)在医用涤纶缝合环材料表面沉积了一层类金刚石(DLC)薄膜。细菌黏附实验的结果证明沉积了类金刚石薄膜后的表面对五种细菌——金黄色葡萄球菌(S taphy lococcus aureus,SA)、表皮葡萄球菌(S taphy lococcus ep iderm id is,SE)、大肠杆菌(E scherich ia co li,EC)、绿浓杆菌(P seudom onas aerug inosa,PA)和白色念珠菌(C and ida a lb icans,CA)的黏附均有明显的减少(P<0.05)。计算细菌与材料之间的黏附自由能ΔFadh表明:细菌对PET表面的黏附自由能为负值,而细菌对DLC表面的ΔFadh>0,因此细菌对DLC表面黏附过程难于发生,即使黏附也是可逆的。展开更多
基金Scientific Research Foundation for the Returned Overseas Chinese Scholars,Ministry of Education of China(No.2005-383)
文摘Hybrid materials were prepared using a silane coupling agent, tetraethoxysilane （ TEOS ） as the precursor, dilute hydrochloric acid as the catalyst, and epoxy as the matrices. The films coated with hybrid materials were expected to improve abrasion resistance and mechanical properties. The morphology, mechanical properties, adhesion, and abrasion resistance of the polyethylene terephthalate （PET） films were characterized using an atomic force microscope, a tensile testing machine, a bagger knife, and a reciprocating fabric abrasion tester. The result of research indicated that the modification significantly affected the abrasion resistance and roughness. The-tensile strength and abrasion resistance of the modified PET films increased by 40% and 50% respectively at 3 % TEOS mass fraction.
文摘采用乙炔等离子体浸没离子注入与沉积技术(P III-D)在医用涤纶缝合环材料表面沉积了一层类金刚石(DLC)薄膜。细菌黏附实验的结果证明沉积了类金刚石薄膜后的表面对五种细菌——金黄色葡萄球菌(S taphy lococcus aureus,SA)、表皮葡萄球菌(S taphy lococcus ep iderm id is,SE)、大肠杆菌(E scherich ia co li,EC)、绿浓杆菌(P seudom onas aerug inosa,PA)和白色念珠菌(C and ida a lb icans,CA)的黏附均有明显的减少(P<0.05)。计算细菌与材料之间的黏附自由能ΔFadh表明:细菌对PET表面的黏附自由能为负值,而细菌对DLC表面的ΔFadh>0,因此细菌对DLC表面黏附过程难于发生,即使黏附也是可逆的。
