80results about How to "Break symmetry" patented technology

The invention relates to a biomass feed divider with changeable trough obliquity and vibration frequency and amplitude, which realizes continuous, stable and safe feed division by adopting two regulating measures of changing obliquity of a trough and changing vibration frequency and amplitude and by exciting force generated by a vibrating motor (9). The device is formed by arranging one or a plurality of independent distributors in parallel, wherein each distributor mainly comprises a trough body (4), a vibrating motor (9), an elevating (8), a spring supporting mechanism (11) and an auxiliary mechanism; the trough body (4) is supported by the spring supporting mechanism (11) at the front part and the elevating (8) at the rear part, the vibrating motor (9) is arranged in the middle of the bottom of the trough body (4), and the rear part of the trough body (4) is connected with bulkhead by canvas (3). The device integrates material storage and material distribution, is not only suitable for hard biomass but also is suitable for soft biomass, and has lateral expansibility, thereby being convenient to be used together with material equipment of various types.

The invention relates to an electron transport material, and a preparation method and application thereof. The electron transport material uses aryl group as the center, wherein one side is connected with a naphthyridine group with electron transport property, and the other side is connected with a group different from naphthyridine with electron transport property, thereby constituting an unsymmetrical structure. The two sides of the aryl group are connected with different groups, thereby destroying the molecular symmetry, further destroying the molecular crystallinity and avoiding the intermolecular aggregation; and thus, the electron transport material has favorable film-forming property. Most groups in the molecule are rigid groups, thereby enhancing the heat stability of the material. Meanwhile, the aryl group is connected with the groups with electron transport property, so that the material has favorable electron transport capacity and hole barrier capacity, and can be used as an electron transport layer for organic electroluminescent devices.

The invention discloses a phosphorus and nitrogen containing flame-retardant thermotropic liquid crystal copolyester with low melting point and a synthesis method thereof; the phosphorus and nitrogen containing flame-retardant thermotropic liquid crystal copolyester with low melting point is synthesized by taking diacetic ester of 10-(2, 5-dyhydroxy phenyl group)-10-hydrogen-9-oxa-10-phosphaphenanthrene-10-oxide, p-acetoxy-benzoic acid, terephthalic acid and a condensation product of terephthalic acid and aliphatic series diamine with methylene flexible chain as reactive monomers which undergo melt phase polycondensation. The main chain of the molecules of the hermotropic liquid crystal copolyester contains methylene flexible chains; therefore, compared with the common liquid crystal copolyester, the transition temperature of the liquid crystal is greatly reduced and can be matched with the processing temperature of most general-purpose plastics. As the thermotropic liquid crystal copolyester contains halogen free and flame-retardant elements such as phosphorous and nitrogen, the thermotropic liquid crystal copolyester achieves the purpose of high efficiency flame retardant while reinforcing general-purpose plastics. The synthesis method for thermotropic liquid crystal copolyester is simple, is easy to operate, has high reaction speed and high yield, avoids the using of large quantity of solvents and is in line with the requirements of sustainable development.

The invention relates to the field of integrated photonic devices, in particular to a waveguide grating antenna for a phased array transmitting array and a forming method of the waveguide grating antenna. The waveguide grating antenna of the phased array transmitting array comprises a substrate; a first waveguide layer which is positioned on the surface of the substrate; a second waveguide layer which is arranged above the first waveguide layer in the direction perpendicular to the substrate, wherein a grating structure is arranged in the second waveguide layer; evanescent wave coupling can becarried out between the first waveguide layer and the second waveguide layer, so that the length of the grating can be controlled to increase the resolution of the phased array, the asymmetry in thevertical direction is improved, and the directivity of the waveguide grating antenna is improved. According to the invention, the leakage of light to the substrate is reduced, the proportion of upwardemission of light is improved, the emission efficiency of light and the detection distance of the phased array are further improved, and the realization of a high-power output device is facilitated.

The invention discloses a compound taking a quinolinone derivative as a core and an application of the compound in an organic electroluminescent device. The compound structurally contains the quinolinone derivative as an electron acceptor, so that transmission of electrons in a light-emitting layer is facilitated. A connected heterocyclic group is an electron donor, so as to facilitate the transmission of holes in the light-emitting layer. Nitrogen atoms in the heteroatom-containing benzoazadione are saturated atoms, have quite strong rigidity and are beneficial to improving the triplet stateenergy level of the parent nucleus compound, and the combination of the electron donor and the electron acceptor can improve the recombination efficiency of excitons, the starting voltage is reduced and the performance of the device is improved. When the compound is used as a light-emitting layer material of the organic electroluminescent device, the current efficiency of the device is greatly improved, and the service life of the device is obviously prolonged.

The invention discloses a modified unsaturated polyester resin excellent in ageing resistance. The modified unsaturated polyester resin comprises the following raw materials: cis-butenedioic anhydride, phthalic anhydride, maleic anhydride, terephthalic acid, ethylene glycol, propylene glycol, diethylene glycol, rosin, propoxylated bisphenol A, hydroquinone, styrene, linseed oil, cobalt isooctanoate, methyl ethyl ketone peroxide, organic montmorillonite, nano titanium dioxide, nano zinc oxide, an aluminate coupling agent, a polymerization inhibitor, a modified ultraviolet absorber, a catalyst, an air-drying additive and an antioxidant B215. The invention also provides a preparation method of the modified unsaturated polyester resin excellent in ageing resistance. The unsaturated polyester resin prepared by the invention is excellent in ageing resistance.

The invention discloses a compound containing spiro-xanthene fluorene and an application of the compound to an organic light-emitting device. The compound has a spiro-xanthene fluorene structure, so that the compound has high rigidity and the advantages that crystallization and aggregation between molecule cannot be easily formed, and the compound has good film-forming property and the like afterbeing connected with a long-chain branch structure of a carbazole derivative. A parent nucleus of the compound has double polarity, a branch chain is provided with an electron-donating group, the electron donating abilities of a branch chain group are different, so that HOMO energy levels of a material are different, and the compound can serve as different functional layer materials to be used. The compound has higher triplet-state energy levels, energy loss can be effectively blocked, and energy transfer is facilitated. The compound serves as an organic light-emitting functional layer material to be applied to an OLED (organic light-emitting diode) device, current efficiency, power efficiency and external quantum efficiency of the device are greatly improved, and the service life of the device is obviously prolonged.

The invention discloses a compound adopting tribenzocycloheptenone as a core, and an application thereof in OLED devices. The compound adopts the tribenzocycloheptenone as a core, and has the characteristics of difficulty in intermolecular crystallization, difficulty in aggregation, and good film forming ability. When the compound is used as the luminescent layer main body material of the OLED luminescent devices, the current efficiency, the power efficiency and the external quantum efficiency of the devices are greatly improved, and the life of the devices is obviously prolonged.

The invention discloses a compound containing spiro-dimethyl anthracene fluorene and an application of the compound. The compound has a spiro-dimethyl anthracene fluorene structure, so that the compound has high rigidity and the advantages that crystallization and aggregation between molecule cannot be easily formed, and the compound has good film-forming property and the like after being connected with a long-chain branch structure of a carbazole derivative. A parent nucleus of the compound has double polarity, a branch chain is provided with an electron-donating group, the electron donatingabilities of a branch chain group are different, so that HOMO energy levels of a material are different, and the compound can serve as different functional layer materials to be used. The compound hashigher triplet-state energy levels, energy loss can be effectively blocked, and energy transfer is facilitated. The compound serves as an organic light-emitting functional layer material to be applied to an OLED (organic light-emitting diode) device, current efficiency, power efficiency and external quantum efficiency of the device are greatly improved, and the service life of the device is obviously prolonged.

The invention discloses an organic compound taking a carbazole derivative as a core as well as a preparation method and application of the same, and belongs to the technical field of semiconductors. The organic compound has the structure that is shown as a general formula (1); the invention further discloses a preparation method and application of the compound. The compound provided by the invention has relatively high glass transition temperature and molecular thermal stability, proper HOMO and LUMO energy levels and relatively high Eg; by optimizing the device structure, the photoelectric property of the OLED device can be effectively improved, and the service life of the OLED device can be effectively prolonged.

The invention discloses a spiro-xanthene fluorene-cored compound and application thereof to organic electroluminescent devices. Containing a s spiro-xanthene fluorene structure, the spiro-xanthene fluorene-cored compound is high in rigidity, and after being connected with the long-branch-chain structure of carbazole derivatives, has the advantages of being less prone to intermolecular crystallization and aggregation, good in film forming properties and the like. Due to the facts that the parent nucleus is bipolarized and the branch chains serve as electron-donating groups with different electron-donating capacities, the spiro-xanthene fluorene-cored compound can present different HOMO (highest occupied molecular orbital) energy levels and further can serve as different functional layer materials. Besides, the spiro-xanthene fluorene-cored compound is high in triplet state energy level and capable of effectively blocking energy loss and facilitating energy transferring. Therefore, whenthe spiro-xanthene fluorene-cored compound is applied to OLED (organic light emitting diode) devices, the current efficiency, the power efficiency and the external quantum efficiency of the devices can be greatly improved, and meanwhile, the service life of the devices can be significantly prolonged.

The invention discloses a compound taking aza-dibenzosuberone as a core and application thereof on organic light emission diodes device. The compound takes the aza-dibenzosuberone as the core, the material is hard to crystalize and has good film-forming property, thermal stability and the like; at the same time, the material disclosed by the invention has smaller triplet state and singlet state energy difference compared with the dibenzosuberone, and the triplet state energy can be sufficiently utilized. When the compound disclosed by the invention is used as the luminescent layer material of the OLED device, the current efficiency, the power efficiency and the external quantum efficiency of the device are greatly improved; and meanwhile, the life of the device is obviously prolonged.

The invention discloses a compound with spirodimethylanthracene-fluorene and nitrogenous heterocycles and application thereof in organic light-emitting devices. With spirodimethylanthracene-fluorene structure, the compound herein has great rigidity. After nitrogenous six-membered heterocyclic long-chain branch structure is linked to the compound, the compound features rarity of intermolecular crystallization and gathering, good film-forming capacity and the like. Since the stem nucleus is bipolar and the branch chains are electron-withdrawing groups which have different electron-withdrawing capacities, materials have different HOMO (highest occupied molecular orbital) energy levels and may act as different functional layer materials. In addition, with high trilinear energy level, the compound can effectively block energy loss and facilitate energy transfer. Therefore, after the compound is applied as an organic light-emitting functional layer material to OLED devices, all current efficiency, power efficiency and external quantum efficiency of the devices can be greatly improved. Furthermore, the service lives of the devices are significantly extended.

The invention discloses a compound employing a quinazolinone derivative as a mother nucleus and application of the compound. According to the compound, the quinazolinone derivative is taken as a core, so that the compound has the characteristics that molecules are not easy to crystallize and not easy to gather, and has good film-forming property. When the compound is used as a light-emitting layer material of an OLED, the current efficiency, the power efficiency and the external quantum efficiency of a device are greatly improved, and meanwhile, the service life of the device is obviously prolonged.

An optical element (3) includes an imaging region (9) with a lens arrangement (7) which is aligned along an optical axis (O), and a collimation region (8) which surrounds the imaging region (9) to theside of the optical axis (O). A lighting apparatus (1) includes an optical element (3) as described above and a light-producing device (2) for simultaneously illuminating the collimation region (8) and the imaging region (9) of the optical element (3), wherein the lens arrangement (7) is adjustable by mechanical means for the purposes of varying the optical property thereof and/or the light-producing device (2) is configured to locally vary light density distribution of the light emitted thereby. Various embodiments are applicable, for example, to projectors, e.g. for vehicles, stage and effect lighting, external lighting, etc.

The invention relates to a low-refractive-index and high-transparency TPU film and a preparation method thereof. The TPU film is prepared from the following raw materials in parts by weight: 12-18 parts of alicyclic diisocyanate, 7-13 parts of toluene diisocynate, 20-30 parts of polypropylene oxide polyol, 20-30 parts of polycaprolactone polyol, 1-4 parts of a chain extender, 0.2-0.8 part of a defoaming agent, 2-4 parts of an ultraviolet absorber, 0.4-1.6 parts of an anti-yellowing agent, and 0.5-1.5 parts of polytetrafluoroethylene. The light transmittance of the TPU film is more than 98%, and the anti-yellowing level reaches 5 or above, the TPU film is likely to yellow after belong exposed in sunshine or oxygen for a long time and can preserve stable properties at a temperature below 480 DEG C, the tensile strength is more than 87MPa, the elasticity modulus is more than 0.6MPa, the tear strength is more than 150kg/cm, the elongation is more than 800%, and the Shore hardness is 80A-100A.

The invention relates to a waveguide structure of an annular resonant cavity with a notch. The waveguide structure comprises a substrate, a first waveguide, a second waveguide and the resonant cavity,wherein the first waveguide, the second waveguide and the resonant cavity are arranged in the substrate, and the first waveguide is a first cavity extending into the substrate from a side face of thesubstrate; the second waveguide is a second cavity extending into the substrate from the side face of the substrate; and the resonant cavity is an annular cavity with a notch. The resonant cavity isdesigned to be the annular cavity with the notch, so that small-area multi-channel Fano resonance is formed, the Fano resonance has the characteristics of sharpness and asymmetry, and each Fano resonance can output one function, so that the requirement of simultaneously processing data by multiple channels can be met, the parallel processing capacity and the integration level of an optical deviceare enhanced, therefore, the working efficiency of an optical circuit is improved.

The invention discloses a compound taking dibenzocycloheptene as a core and applications of the compound, and belongs to the technical field of semiconductors. The structure of the compound provided by the invention is shown as general formula (1). The invention also discloses applications of the compound. The compound provided by the invention contains a dibenzocycloheptene structure, has relatively high glass-transition temperature and molecular thermal stability, and appropriate HOMO and LUMO energy levels, and can effectively improve the luminous efficiency of devices and prolong the service life of OLED devices after being applied to manufacturing of the OLED devices.

The invention discloses a natural light homogenization lighting device and method based on double-lens negative and positive combination. The natural light homogenization lighting device and method can be used as lighting curtains, indoor shutters, window glass and the like. Comprising a front ideal lens and a rear ideal lens in an array form, the front ideal lens and the rear ideal lens are a negative lens array and a positive lens array respectively, and the negative lens array is used for collecting outdoor natural light and conducting the outdoor natural light to the positive lens array through an intermediate medium; the positive lens array is used for refracting incident natural light and then deflecting the incident natural light to the indoor space. Natural light entering the window can be efficiently collected, light rays are evenly diffused to all directions in a room, indoor illumination is homogenized, indoor privacy is effectively protected, and the window is environmentally friendly and free of pollution.

The invention discloses a preparation method of a PVC (polyvinyl chloride) waterproof coating. The preparation method comprises the specific preparation process as follows: prepared branched PVC and absolute ethyl alcohol are added to a stirring reactor, meanwhile, nano-titania, a plasticizer and a defoaming agent are added, the mixture is stirred and mixed uniformly, main slurry is obtained, prepared fluorinated epoxy resin powder is added to the main slurry, the main slurry is stirred to react at 40-45 DEG C for 40 min, and viscous slurry, namely, the PVC waterproof coating, is obtained. Alkoxyl-grafted PVC is directly cured and crosslinked with fluorinated epoxy resin, so that the branched PVC and the fluorinated epoxy resin are cured and crosslinked into a net structure, nano-titinia is wrapped in the net structure and can be better fixed, meanwhile, alkoxy and fluorine functional groups are uniformly distributed on the net structure, and the coating has uniform hydrophobic property, aging resistance and thermal stability.