摘要:
A polylactic acid formed body including a polylactic acid base material (1) and a hydrocarbon film (3) vapor-deposited on the surface of the base material by a plasma CVD method. The polylactic acid base material (1) exhibits a sharp X-ray diffraction peak in which a half-width of peak appearing in the 10°-25° wide angle X-ray measurement is not more than 1.22°, and the hydrocarbon film (3) is vapor-deposited on the surface of the polylactic acid base material (1), and includes two layers of a high CH2 layer (3a) having a ratio of CH2 per the total of CH, CH2 and CH3 of not less than 40% and a low CH2 layer (3b) formed on the high CH2 layer (3a) and having a ratio of CH2 per the total of CH, CH2 and CH3 of not more than 35%.
摘要:
Components with improved erosion resistance are disclosed. A surface of the component or a substrate of the component is modified by coating the substrate with an elastomer layer. The elastomer layer is then modified by embedding hard particles onto an outer side of the elastomer layer. The hard particles exhibit higher fractured toughness providing enhanced erosion protection. The elastic properties of the elastomer experience little reduction because the surface embedded particles are located only at the outer side or outer surface of the elastomer layer. Therefore, the bond between the inner side of the elastomer layer and the substrate or component surface is not interfered with and the potential for electro-chemical corrosion and poor adhesion are not increased by the presence of the hard particles as the hard particles are located away from the inner face between the elastomer layer and the substrate.
摘要:
A method of forming a vapor deposited film of a silicon oxide on the surface of a substrate by holding the substrate to be treated in a plasma-treating chamber, and effecting the treatment with a chemical plasma by feeding an organosilicon compound and an oxidizing gas into the treating chamber, wherein the rate of feeding the oxidizing gas is varied while maintaining constant the rate of feeding the organosilicon compound gas into the plasma-treating chamber during the formation of the vapor deposited film. A chemical vapor deposited film is formed featuring excellent adhesiveness, softness, flexibility, oxygen-barrier property and water-barrier property.
摘要:
Durable antibacterial coatings are prepared by inter-diffusing zwitterionic polyurethane in acrylic polyurethane. Bacterial attachment is substantially eliminated from the surface of the coatings due to the hydrophilicity of the zwitterionic polyurethane. Long-term antibacterial properties were observed for both Gram-negative and Gram-positive bacteria even when the coatings were constantly challenged by mechanical abrasion.
摘要:
The present disclosure describes a protective coating for a low index material, and a process for preparing a protected low index material. The protective coating partially penetrates the pores of a low index material, providing a seal protecting the pores, and can strengthen the construction by forming a gradient in properties of the protected low index material. The present disclosure further provides a diffusing low index optical element having a protected low index material and a diffusing layer disposed on the low index material.
摘要:
A component, the surface of which is at least partially covered with a coating, wherein the coating comprises a PVD coating arranged between a first paint layer and a second paint layer and the first paint layer forms a base coat layer on the surface and the second paint layer forms a top coat layer having a top coat thickness on the PVD coating, wherein at least the top coat layer was produced with UV-curable paint. Proceeding from the interface of the PVD coating in a region smaller than the top coat thickness, the top coat layer has a lower degree of cross-linking induced by UV light than in the part of the top coat layer connected to said region. The invention relates in particular to a method for producing such a component.
摘要:
Components with improved erosion resistance are disclosed. A surface of the component or a substrate of the component is modified by coating the substrate with an elastomer layer. The elastomer layer is then modified by embedding hard particles onto an outer side of the elastomer layer. The hard particles exhibit higher fractured toughness providing enhanced erosion protection. The elastic properties of the elastomer experience little reduction because the surface embedded particles are located only at the outer side or outer surface of the elastomer layer. Therefore, the bond between the inner side of the elastomer layer and the substrate or component surface is not interfered with and the potential for electro-chemical corrosion and poor adhesion are not increased by the presence of the hard particles as the hard particles are located away from the inner face between the elastomer layer and the substrate.
摘要:
A vapor deposited film is formed on a base material surface by a plasma CVD method where an organic metal compound and an oxidizing gas are used as a reactive gas. The vapor deposited film has three sections of a base material side adhesive layer having 5% or more carbon, a barrier intermediate layer having less than 5% carbon, and a surface protection film having 5% or more carbon, by element concentration with respect to the total amount of three elements of a metal element (M), oxygen (O) and carbon (C) derived from the organic metal compound. The vapor deposited film has excellent adhesiveness to the base material, and has excellent resistance to water, especially to alkaline aqueous solutions, as well.
摘要:
A structural member 10 includes a base material 100 and a protective film 200 covering a surface 110 of the base material 100. When, in a cross-section of the protective film 200 cut perpendicularly to the surface 110, a proportion of pores per unit area is defined as porosity, the porosity in a first portion 201 that is a portion of the cross-section is lower than the porosity in a second portion 202 that is a portion of the cross-section closer to the base material 100 side thereof than the first portion 201.