35results about How to "Reduce aggregation effect" patented technology

A series of Pt(II) complexes having the following formula are disclosed:

• • X₁ and X₂ independently are C or N, X₁ can also locate at another position of the hexagonal ring, when X₁ is N;
  • R₁ is H, C1–C8 alkyl, or C1–C4 perfluoroalkyl, R₂ is H, R₁ and R₂ together are C4–C8 alkylene, or R₁ and R₂ together are bridged carbocyclic C4–C12 alkylene, when X₂ is C;
  • R₁ is H, C1–C8 alkyl, or C1–C4 perfluoroalkyl, and R₂ is omitted, when X₂ is N;
  • R₇ is H or methyl, and R₈ is omitted, when X₁ is N;
  • R₇ is H or methyl, R₈ is H or methyl, or R₇ and R₈ together are

when X₁ is C.

The invention relates to a method for reinforcing recycled concrete by using graphene oxide. The method comprises the following steps: (1) preparing raw materials; (2) adding water into the graphene oxide to prepare dispersion liquid; (3) adding water into a water reducing agent to prepare a water reducing agent solution; (4) adding the dispersion liquid into the water reducing agent solution, stirring and then carrying out ultrasonic treatment for 15-20min to prepare a mixed solution; (5) screening recycled coarse aggregate, then mixing the screened material with fine sand and stirring, adding cement into the obtained mixture and stirring; (6) adding the mixed solution into the mixture under the condition of stirring, putting the product into a test mould after stirring, evenly vibrating on a vibration table, and then curing in a curing room. The method provided by the invention is reasonable in design and simple and convenient to operate; a rich lamellar structure of the graphene oxide contains a great deal of oxygen-containing active groups, so that growth points are provided for hydration products of the cement; a template effect for hydration of the concrete is achieved, and the mechanical properties and durability of the recycled concrete are improved.

The invention discloses an organic electroluminescence compound and application thereof. The structural formula of the compound is as shown in the general formula (1). The material has good fluorescence quantum efficiency and electroluminescent efficiency, is easy to form an amorphous film, and has good heat stability. Thus, the material can be used as a luminescent layer main-body or a doping material in an organic electroluminescent device.

The invention provides a heterostructure heat-conducting filler, a preparation method and application thereof, a silicone rubber heat-conducting insulating composite material and a preparation method thereof, and belongs to the technical field of heat-conducting insulating materials. gamma-glycidyl ether oxypropyl trimethoxy silane (GPTMS) and gamma-aminopropyl triethoxy silane (APTES) are adopted to carry out surface functional modification on boron nitride nanosheets and Al2O3 respectively, so that modified aluminum oxide is grafted to the surfaces of the modified boron nitride nanosheets, and the heat-conducting filler with a'point-surface 'heterostructure is obtained. Compared with a single boron nitride nanosheet layer and aluminum oxide particles, the heat-conducting filler with the point-surface heterostructure can increase the contact lap joint probability of the heat-conducting filler in a silicon rubber matrix, more heat-conducting channels or networks are formed, and the construction efficiency of the heat-conducting channels of the heat-conducting filler in the matrix is improved; therefore, the composite material with high heat-conducting property can be obtained when the use amount of the heat-conducting filler is low, and the mechanical property of the heat-conducting composite material is ensured.

The invention relates to a preparation method of amlodipine besylate tablets. The preparation method is mainly used for solving the technical problems that existing products are low in yield and poorin dissolution rate. The technical scheme adopted by the invention lies in that the preparation method of amlodipine besylate tablets is characterized by comprising the steps of (1) firstly uniformlymixing amlodipine besylate with gum acacia to obtain a mixed material A; enabling microcrystalline cellulose and calcium phosphate dibasic anhydrous to dissolve in anhydrous ethanol, performing stirring, and then performing spray drying so as to obtain a mixed material B; placing the mixed material A, the mixed material B and magnesium stearate in a high-efficiency wet-method mixed granulating machine, and performing stirring to obtain a mixed material C; adding the mixed material C to a dry-method granulating machine, and screening out fine powder so as to obtain granules I; adding the granules I, magnesium stearate and sodium carboxymethyl starch to a three-dimensional movement mixing machine together, and performing mixing so as to obtain granules II; and tabletting the granules II so as to obtain the amlodipine besylate tablets. The amlodipine besylate tablets are mainly applied to the technical field of medicines.

The invention discloses a light stabilizer. The light stabilizer has a structure as shown in the following formula I. In the formula I, R1, R2 and R3 are respectively and independently selected from one or two of alkyl or alkoxy, and n is an integer from 2 to 4. The light stabilizer has an improved light stabilizing effect, has a good dispersing effect on inorganic filler used together with the light stabilizer, and endows a plastic product using the light stabilizer with better physical and mechanical properties. The invention also discloses a preparation method and application of the light stabilizer.

The invention discloses a high-temperature-resistant low-compression-deformation flame-retardant thermoplastic elastomer which comprises the following raw materials in parts by mass: 20-60 parts of fluororesin, 45-100 parts of a flame-retardant fluororubber premix, 1-10 parts of a vulcanizing agent, 1-10 parts of a cross-linking agent, 3-10 parts of a lubricant, 1-3 parts of an antioxidant and 0-2 parts of an ultraviolet light initiator. The invention also discloses a preparation method of the high-temperature-resistant low-compression-deformation flame-retardant thermoplastic elastomer. The thermoplastic elastomer prepared by the invention not only has excellent chemical medium resistance and radiation resistance, but also has excellent properties of high temperature resistance, flame retardance and low compression deformation, and is suitable for being applied to harsh environments and high-temperature fields.

The invention provides a BNNS-coated Al2O3 heterostructure heat-conducting filler, preparation and application thereof, a heat-conducting insulating composite material and preparation thereof, and belongs to the technical field of heat-conducting insulating materials. Aluminum salt and boron nitride nanosheets are taken as raw materials, Al2O3 grows on the surface of BNNS in situ through a precipitation-high-temperature calcination method, the BNNS-coated Al2O3 heat conduction filler with a point-surface heterostructure is prepared, and compared with a single boron nitride nanosheet layer and Al2O3 particles, the heat-conducting filler BNNS-coated Al2O3 with a point-surface heterostructure can increase the contact lap joint probability of the heat-conducting filler in a silicone rubber matrix, more efficient heat-conducting passages or networks are formed, the construction efficiency of the heat-conducting passages of the heat-conducting filler in the matrix is improved, the heat-conducting property of the heat-conducting composite material is further improved, the composite material with high heat-conducting property can be obtained when the use amount of the heat-conducting filler is low, and the mechanical property of the heat-conducting composite material is ensured.

The invention discloses an organic light-emitting material and application thereof. A structural formula of the light-emitting material is shown as a general formula (1). The material has good fluorescence quantum efficiency and electroluminescence efficiency and has good heat stability. Therefore, the material can be used as a light-emitting layer doped material in an organic electroluminescence device.

The invention discloses a dust-settling method of a working face for layered and fully-mechanized coal mining of a gently-declined thick coal seam by water injection under dynamic pressure. The methodcomprises the following steps of drilling a sealing-tape machine crossheading and an air return crossheading in the two sides of the coal seam respectively, and getting through and connecting the tail ends of the sealing-tape machine crossheading and the air return crossheading to form the working face used for fully-mechanized coal mining; conducting drilling at intervals in the sealing-tape machine crossheading and the air return crossheading in the length direction of the sealing-tape machine crossheading and the air return crossheading to drill out spaced dynamic pressure holes I, and filling the dynamic pressure holes I with cut-off devices I used for sealing the radial direction of the dynamic pressure holes I; injecting safe gas in the dynamic pressure holes I through the cut-off devices I according to a predetermined exhaust rule, and then replacing hazardous gas in the dynamic pressure holes I with the safe gas through the cut-off devices I; using the safe gas to sufficientlyopen up the intervals according to the predetermined exhaust principle to avoid the situation that the hazardous gas drifts away, causing decompression and accompanying compaction effect; and meanwhile, the hazardous gas and safe gas are mixed to constantly and continuously dilute the concentration of the hazardous gas, and therefore, the aggregation effect of the hazardous gas is reduced to a great extent.

The invention relates to a functionalized graphene oxide phthalocyanine nonlinear optical composite material as well as a preparation method and application thereof, belongs to the technical field ofnonlinear optical composite materials, overcomes the defects in the prior art, and obtains a functional material for effective optical limiting laser protection. The nonlinear optical composite material is formed by bonding phthalocyanine and functionalized graphene oxide, and the functionalized graphene oxide is one of asymmetric functionalized graphene oxide and symmetric functionalized grapheneoxide. The non-linear optical composite material forms an electron donor receptor system, is beneficial to rapid transfer of electrons, enables phthalocyanine and graphene oxide to have a synergisticeffect to show excellent three-order non-linear optical performance and stable performance, reduces the aggregation effect in an organic solvent, can be used as an optical limiting material, and is especially suitable for laser device protection.

The invention provides a light emitting diode and a manufacturing method therefor. The light emitting diode comprises an N type layer, a light emitting layer, a P type layer and a contact layer, wherein an insertion layer is designed between the P type layer and the contact layer; the insertion layer comprises an N<+> nitride layer and a P<+> nitride layer which are disjunctively distributed in a doping region; and the N<+> nitride layer and the P<+> nitride layer are not fully overlapped in the doping region in a perpendicular direction. Inclined tunneling junctions are formed by the N<+> nitride layer and the P<+> nitride layer disjunctively distributed in the doping region in the insertion layer, so that the current expansion is reinforced, and the luminance and reliability of the LED are improved.