摘要:
Telechelic resins with reactive end groups (e.g., epoxy phosphate and epoxy ester) were synthesized using bisphenol-A (BPA) epoxide. The bisphenol-A based epoxide and the telechelic resins were all modified with tetraethylorthosilicate (TEOS) oligomers to produce epoxide/polysilicate (organic/inorganic) hybrid systems. The modified epoxides were thermally cured with a melamine-formaldehyde resin, cast on steel substrates and salt spray analysis revealed that the inorganically modified epoxides provided improvement over unmodified epoxide resins with respect to both corrosion resistance and adhesion to steel substrates.
摘要:
A series of low, medium, and high molecular weight copolymers containing methyl methacrylate, n-butyl acrylate. 2-hydroxyethyl methacrylate, and 2,2,2-trifluoroethyl methacrylate were synthesized by solution polymerization under monomer-starved conditions. The copolymers were crosslinked with a methylated melamine formaldehyde resin in order to obtain thermosetting acrylics. Lower wettability, higher oxygen permeability, and lower refractive index were observed for higher concentrations of fluorinated monomer in the copolymer composition and high number-average hydroxyl functionality of the high molecular weight copolymers increased the crosslink density of the acrylic films, thereby resulting in improved tensile strength and tensile modulus.
摘要:
A self-stratifying coating composition is provided. The self-stratifying coating can include a base layer having a telechelic resin with reactive end groups and an alkoxide oligomer. In addition, a top layer having an acrylate and/or methacrylate such as a fluorinated acrylate, a fluorinated methacrylate, a fluorinated hydrocarbon copolymerized with an acrylate, a fluorinated hydrocarbon copolymerized with a methacrylate and combinations thereof, and a crosslinking agent can be included. In addition, the base layer and the top layer can have an interfacial surface tension therebetween that is within a range of about 15 to 60 mJ/cm2.
摘要翻译:提供了一种自分层涂料组合物。 自分层涂层可以包括具有反应端基的遥爪树脂和烷氧基低聚物的基层。 此外,可以包括具有丙烯酸酯和/或甲基丙烯酸酯如氟化丙烯酸酯,氟化甲基丙烯酸酯,与丙烯酸酯共聚的氟化烃,与甲基丙烯酸酯共聚的氟化烃及其组合的顶层和交联剂。 此外,基层和顶层之间的界面表面张力可以在约15至60mJ / cm 2的范围内。
摘要:
A self-stratifying coating composition is provided. The self-stratifying coating can include a base layer having a telechelic resin with reactive end groups and an alkoxide oligomer. In addition, a top layer having an acrylate and/or methacrylate such as a fluorinated acrylate, a fluorinated methacrylate, a fluorinated hydrocarbon copolymerized with an acrylate, a fluorinated hydrocarbon copolymerized with a methacrylate and combinations thereof, and a crosslinking agent can be included. In addition, the base layer and the top layer can have an interfacial surface tension therebetween that is within a range of about 15 to 60 mJ/cm2.
摘要翻译:提供了一种自分层涂料组合物。 自分层涂层可以包括具有反应端基的遥爪树脂和烷氧基低聚物的基层。 此外,可以包括具有丙烯酸酯和/或甲基丙烯酸酯如氟化丙烯酸酯,氟化甲基丙烯酸酯,与丙烯酸酯共聚的氟化烃,与甲基丙烯酸酯共聚的氟化烃及其组合的顶层和交联剂。 此外,基层和顶层之间的界面表面张力可以在约15至60mJ / cm 2的范围内。
摘要:
In one embodiment, a semi-transparent reflector may include a multilayered photonic structure. The multilayered photonic structure includes a plurality of coating layers of high index dielectric material and a plurality of coating layers of low index dielectric material. The plurality of coating layers of high index dielectric material and the plurality of coating layers of low index dielectric material of the multilayered photonic structure are arranged in an [LH . . . (LH)N . . . L] structure. L is one of the plurality of coating layers of low index dielectric material. H is one of the plurality of coating layers of high index dielectric material. N is a positive integer. The multilayered photonic structure has substantially constant reflectance values for wavelengths of electromagnetic radiation in a visible spectrum over a range of angles of incidence of the electromagnetic radiation.
摘要:
The present invention provides an omnidirectional ultraviolet (UV)-infrared (IR) reflector. The omnidirectional UV-IR reflector includes a multilayer stack having at least three layers, the at least three layers having at least one first index of refraction material A1 and at least one second index of refraction layer B1. The at least one first index of refraction material layer and the at least one second index of refraction material layer can be alternately stacked on top of each other to provide the at least three layers. In addition, the at least one first index of refraction material layer and the at least one second index of refraction material layer each have a predefined thickness of dA1 and dB1, respectively, with the thickness dA1 not being generally equal to the dB1 thickness such that the multilayer stack has a non-periodic layered structure.
摘要:
A multi-layer photonic structure may include alternating layers of high index material and low index material having a form [H(LH)N] where, H is a layer of high index material, L is a layer of low index material and N is a number of pairs of layers of high index material and layers of low index material. N may be an integer ≧1. The low index dielectric material may have an index of refraction nL from about 1.3 to about 2.5. The high index dielectric material may have an index of refraction nH from about 1.8 to about 3.5, wherein nH>nL and the multi-layer photonic structure comprises a reflectivity band of greater than about 200 nm for light having angles of incidence from about 0 degrees to about 80 degrees relative to the multi-layer photonic structure. The multi-layer photonic structure may be incorporated into a paint or coating system thereby forming an omni-directional reflective paint or coating.
摘要:
Disclosed is a multilayer structure wherein a first layer of a first material having an outer surface and a refracted index between 2 and 4 extends across an outer surface of a second layer having a refractive index between 1 and 3. The multilayer stack has a reflective band of less than 200 nanometers when viewed from angles between 0° and 80° and can be used to reflect a narrow range of electromagnetic radiation in the ultraviolet, visible and infrared spectrum ranges. In some instances, the reflection band of the multilayer structure is less than 100 nanometers. In addition, the multilayer structure can have a quantity defined as a range to mid-range ratio percentage of less than 2%.
摘要:
Bioactive coatings that are stabilized against inactivation by weathering are provided including a base associated with a chemically modified enzyme, and, optionally a first polyoxyethylene present in the base and independent of the enzyme. The coatings are optionally overlayered onto a substrate to form an active coating facilitating the removal of organic stains or organic material from food, insects, or the environment.
摘要:
A process for designing and manufacturing an omnidirectional structural color (OSC) multilayer stack. The process can include providing a digital processor operable to execute at least one module and a table of index of refraction values corresponding to different materials that are usable for manufacturing an OSC multilayer stack. An initial design for the OSC multilayer stack can be provided and at least one additional layer is added to the initial design OSC multilayer stack to create a modified OSC multilayer stack. In addition, the thickness of each layer of the modified OSC multilayer stack is calculated using a merit function module until an optimized OSC multilayer stack has been calculated.