33results about How to "High color stability" patented technology

The present invention relates to organic light emitting devices (OLEDs). The devices of the present invention are efficient white or multicolored phosphorescent OLEDs which have a high color stability over a wide range of luminances. The devices of the present invention comprise an emissive region having at least two emissive layers, with each emissive layer comprising a different host and emissive dopant, wherein at least one of the emissive dopants emits by phosphorescence.

The invention relates to the technical field of cables and in particular relates to a self-supporting aerial optical cable capable of being identified through night vision. The self-supporting aerial optical cable comprises a cable core, an outer sheath, a reinforcing element, a suspension wire sheath and a rib, wherein the cable core is coated by the outer sheath; the reinforcing element is made of a single steel wire or glass fiber reinforced plastics and is coated by the suspension wire sheath; the rib is used for connecting the suspension wire sheath with the outer sheath; the cable core is formed by a central reinforcer, a plurality of loose tubes and a protective layer, wherein the loose tubes are arranged outside the central reinforcer and are coated by the protective layer; at least an optical fiber is arranged in each loose tube; two marking strips are symmetrically arranged on the suspension wire sheath; the suspension wire sheath, the outer sheath and the rib, which are made of the same materials, are formed integrally; and the marking strips are made of special materials. The self-supporting aerial optical cable has the main beneficial effects that the thickness of the suspension wire sheath is more convenient to control; the suspension wire sheath is smoother and round; the product production speed is higher and the percent of pass of the product is higher; the dead weight of the optical cable is lighter and the suitable span is longer; and the colors of the marking strips are more stable.

The invention discloses a radiation refrigeration composite coating with structural color, application and a preparation method. The radiation refrigeration composite coating comprises a base layer, and reflection nanoparticles and color forming nanoparticles embedded in the base layer, wherein a reflection valley jointly realized by broadband high reflection of the reflection nanoparticles and local plasmon resonance of the color forming nanoparticles presents the structural color of the radiation refrigeration composite coating. The radiation refrigeration composite coating has relatively strong reflecting capacity in a sunlight wave band (0.3-4 microns), and the reflectivity in most of the sunlight wave bands is up to 0.95. The emissivity in the infrared band (4-24 [mu] m) can be continuously 0.9 or above, and the emissivity in most of the infrared bands can be up to 0.95. The invention can overcome the problem of limited application occasion due to single color of the existing radiation refrigeration coating, thereby having broad application prospects in the fields of building energy saving, surface heat management of outdoor objects and electronic products and the like.

The invention relates to the technical field of cables, and particularly relates to an optical cable capable of being identified at night. The optical cable comprises a cable core, an external sheath, a reinforced member, a suspension wire protective layer and a rib. The cable core is composed of a central reinforced member which is arranged at the center, multiple loose tubes which are arranged outside the central reinforced member, and a protective layer which wraps the multiple loose tubes. The loose tubes are provided with at least one light guide fiber. The suspension wire protective layer is symmetrically provided with two marking strips. The suspension wire protective layer, the external sheath and the rib of the same material are integrally formed. The external sheath is provided with the marking strips. The thickness of the marking strips is 0.2mm-1.0mm, and the marking strips are made of special material. The optical cable capable of being identified at night has the following main beneficial effects that the thickness of the suspension wire protective layer is more convenient to control, the suspension wire protective layer is smoother and round and normal, product production speed is more rapid and the percent of pass is higher; and weight of the optical cable is lower, suitable span is longer and the color of the marking strips is more stable.

The invention provides a powder coating composition prepared from a combination, the combination comprising:

• • A) at least one binder resin and, optionally at least one curing agent,
  • B) at least one calibrated pigmented liquid, based on at least one pigment, and,
  • C) optionally, at least one pigment and/or extenders and/or additive.

The powder coating composition of the invention provides a precise colour of the coatings having a desired colour with high colour stability. Therefore there is no need for additional adjustment tests or re-working procedures, and, therefore, it makes it possible to offer efficient, small-batch manufacture of custom colours, for example, to match a swatch of fabric supplied by a customer.

A dibenzoheterocyclic compound wherein band gaps of HOMO and LUMO energy levels of the dibenzoheterocyclic compound are wide, light can be emitted in a deep blue light-emitting region; and the LUMO energy level of the dibenzoheterocyclic compound is low, so the LUMO energy level matches with an electron transport layer for electrons injection and transport. The dibenzoheterocyclic compound has hole transport performance, so as a light-emitting layer material, the dibenzoheterocyclic compound balances the ratio of electrons to holes in a light-emitting layer increasing the combination probability and improving the device light-emitting efficiency. The spatial configuration of the dibenzoheterocyclic compound avoids material stacking molecules, reduces annihilation of excitons, and inhibits efficiency roll-off. The dibenzoheterocyclic compound has thermal stability, so deep blue light can be emitted efficiently and stably. With an organic light-emitting diode and a deep blue light-emitting device with high light-emitting efficiency, low working voltage can be obtained.

The invention relates to the technical field of cables, in particular to a self-bearing type optical cable for an electric tower. The self-bearing type optical cable comprises a cable core, an outer sheath covering the cable core, a reinforcement element made of a single steel wire or a glass fiber reinforced plastic, a suspension wire protective layer covering the reinforcement element, and a rib for connecting the suspension wire protective layer with the outer sheath, wherein the cable core is composed of a central reinforcement part positioned in the center, a plurality of loose tubes positioned outside the central reinforcement part, and a protective layer covering the loose tubes; optical fibers are arranged in each loose tube; two marking strips are symmetrically arranged on the suspension wire protective layer; the suspension wire protective layer, the outer sheath and the rib made from the same materials are integrally formed; a marking belt is arranged on the outer sheath; the thickness of each marking strip is 0.2-1.0mm; and the marking strips are made from special materials. The self-bearing type optical cable has the following main benefits: the thickness of the suspension wire protective layer is more convenient to control; the suspension wire protective layer is smoother and rounder; a product is higher in production speed and higher in qualification rate; the optical cable is smaller in self weight and wider in suitable span; and the marking strips are more stable in color.

An N-substituted triacetonediamine compound is produced by reacting 4-amino-2,2,6,6-tetramethylpiperidine or a derivative thereof with a carbonyl compound in a reductive amination.

The invention relates to the technical field of cables, especially to an easily-identifiable communication optical cable for power grid use. The optical cable comprises a cable core, an outer sheath wrapping the cable core, a reinforcing element made of a single steel wire or glass fiber reinforced plastics, a supporting wire protective layer wrapping the reinforcing element, and ribs connecting the supporting wire protective layer and the outer sheath, wherein the cable core consists of a central reinforcing member in the center, at least one filler rope or a plurality of loosen sleeves outside the central reinforcing member and a protective layer wrapping up the filler rope and the loosen sleeves, and the loosen sleeves have at least one optical fiber. In the cable core, the filler rope and the loosen sleeves are twisted about the central reinforcing member in a spiral twisting or clockwise-counterclockwise twisting, and identification strips are made of special materials. The optical cable is advantageous in that the thickness of the supporting wire protective layer is easy to control, the supporting wire protective layer is smoother and round, the production speed is faster, the qualified rate is higher, the deadweight of the optical cable is lighter, the color-locking optical cable is applicable to longer span, and the colors of the identification strips are more stable.

A dibenzoheterocyclic compound having a structure shown in a formula wherein the dibenzoheterocyclic compound has a low LUMO energy level and can be matched with an electron transport material favorable for injection and transport of electrons. The dibenzoheterocyclic compound has hole transport performance. As a light-emitting layer material, the dibenzoheterocyclic compound balances the ratio of electrons to holes in a light-emitting layer increasing the combination probability and improving the light-emitting efficiency of a device. The spatial configuration of the dibenzoheterocyclic compound avoids stacking of material molecules, avoiding generation of high energy excitons due to energy transfer among molecules, reducing annihilation of excitons, and inhibiting efficiency roll-off. The dibenzoheterocyclic compound has thermal stability, so blue light can be emitted efficiently and stably. An organic light-emitting diode contains the dibenzoheterocyclic compound, and a blue light-emitting device with high blue light-emitting efficiency and low driving voltage.

A system and method for filling joints in concrete. The system includes an A-side joint filler compound portion, a B-side joint filler compound portion, and a liquid pigment portion, which are mixed together in a mixing container initially containing only the A-side joint filler compound portion. The portions are mixed using a mixing rod. An elongate nozzle is then attached to the mixing container, and the mixing container added to an application gun for application to the joint.