52results about How to "Act as a nucleating agent" patented technology

The invention discloses a low-temperature co-fired ceramic material highly matched with high-temperature conductive silver paste and a preparation method of the low-temperature co-fired ceramic material. The low-temperature co-fired ceramic material is prepared by sintering the following components in percentage by mass (100% in total): 35%-50% of CaO, 30%-45% of B2O3 and 15%-25% of SiO2. The prepared low-temperature co-fired ceramic material contains a large quantity of microfine crystal grains (CaSiO3) and a small amount of glass and is typical microcrystalline glass ceramic; and the low-temperature co-fired ceramic material is low in dielectric constant and extremely low in loss, good in matching rate with high-temperature conductive silver paste, good in panel flatness and good in comprehensive property, and the dielectric constant and the loss in multiple frequency bands are stable.

A waste polypropylene-modified foaming plate comprises a core foaming layer and an outer layer covering the upper and the lower surfaces of the core foaming layer; the outer layer is prepared by mixing the following components and performing melt extrusion, wherein the components comprises by weight: 97-99.9 parts of modified polypropylene, 0.1-3 parts of anti-oxidants; the core foaming layer is prepared by mixing the following components and performing melt foaming, wherein the components comprises by weight: 60-90 parts of modified polypropylene, 0-20 parts of regenerated polyethylene, 5-10parts of foaming masterbatches, and 5-10 parts of foaming temperature adjusting masterbatches; the manufacturing method of the foaming plate comprises the following steps: preparing activated inorganic powder, preparing a modified auxiliary agent peroxide masterbatch, preparing a modified auxiliary agent monomer masterbatch, preparing the foaming masterbatch, preparing the foaming temperature adjusting masterbatch, and preparing the core foaming plate. The waste polypropylene-modified foaming plate has high melt strength, and the manufacturing method has the characteristics of low production cost and no environment pollution.

The invention discloses a production method of a three-dimensional porous composite bar. The method is characterized by comprising the following steps of: preparing a graphene oxide solution; adding calcium salt and phosphate into the graphene oxide aqueous solution to be uniformly stirred, thus obtaining a graphene oxide / hydroxyapatite precursor solution; and adding konjac glucomannan into the graphene oxide / hydroxyapatite precursor solution under stirring, stirring the solution for 10-120 minutes at 35-60 DEG C, standing, filling the obtained mixed solution into a dialysis bag, soaking the sealed dialysis bag into alkaline solidification liquid, soaking the dialysis bag for 5-15 days at 40-60 DEG C, soaking materials in the dialysis bag in deionized water, cleaning and drying the materials, freezing the materials at a super low temperature and performing vacuum freeze drying on the materials to obtain the three-dimensional porous composite bar. The mechanical property and porosity of the produced composite bar can meet the clinical use requirements of bone repair scaffold materials, and the composite bar can effectively promote bone tissues to quickly and spontaneously repair defects and has a good effect.

The invention relates to a microcrystalline material fluxing nucleating agent, which is composed of a base mineral raw material and a regulator mineral raw material. Specifically, the base mineral raw material accounts for 50%-80% of the total mass of the nucleating agent, the regulator mineral raw material accounts for 20%-50% of the total mass of the nucleating agent, and the sum of the two is 100%. The regulator mineral raw material comprises chambersite, manganese boron and sulfur stone, and other mineral raw materials. The composite microcrystalline material fusion promoting nucleating regulating agent prepared by the method provided by the invention can greatly reduce the firing temperature of traditional ceramic glazes, glaze materials or novel microcrystalline ceramics by 100DEG C-200DEG C, and reduce the melting temperature of microcrystalline glass or traditional glass raw materials by 150DEG C-200DEG C.

The invention discloses a high-rigidity and toughness balance, anti-stress whitening and halogen-free flame retardant polypropylene composite material and a preparation method thereof. The composite material consists of the following raw materials in parts by weight: 32-96 parts of polypropylene, 0-30 parts of talcum powder, 1-20 parts of cage-like polysilsesquioxane, 1-15 parts of elastomer, 0.1-1 part of an antioxidant and 0-2 parts of other aids. The high-rigidity and toughness balance, anti-stress whitening and halogen-free flame retardant polypropylene composite material and the preparation method thereof disclosed by the invention have the advantages that through introducing cage-like polysilsesquioxane nanometer particles in a traditional talcum powder reinforced polypropylene baseformula and compounding two different scale systems, the rigidity and the impact resistance of the polypropylene composite material can be significantly improved; meanwhile, the nano-sized cage polysilsesquioxane particles can act as nucleating agents, so that the crystallinity of the polypropylene composite material is improved; in addition, the better carbon formation effect of the cage-like polysilsesquioxane can improve the oxygen index of the polypropylene composite material and solve the problem of easy combustion of the polypropylene composite material, so that the polypropylene composite material can resist stress whitening while having high-rigidity and toughness balance property and is good in flame retardance.

The invention relates to an energy-storage heat exchange device. The energy-storage heat exchange device comprises an energy storage pile, a heat exchanger, a heating tube and a fan, wherein a thermal insulation layer A is arranged at the periphery of the energy storage pile; a gap between the energy storage pile and the thermal insulation layer A is taken as an air flue; a ventilating groove is formed in the energy storage pile; the fan is connected with the heat exchanger through a pipeline; the other end of the fan is accessed into the air flue A through a pipeline; the other end of the heat exchanger is accessed into an air flue B through a pipeline; the air flue A and the air flue B refer to air flues formed between opposite two ends in the energy storage pile and the thermal insulation layer A; an electric heating tube is arranged in the energy storage pile in a penetrating mode for heating the energy storage pile; under driving of the fan, air flow enters the energy storage pile through the air flue A; and air flow is heated by the energy storage pile. The energy-storage heat exchange device utilizes off-peak electricity to heat the energy storage pile, and utilizes the energy storage pile to slowly release heat for heating air flow to form hot air; and after entering the heat exchanger to exchange heat, hot air is changed into cold air for being blown into the fan, and re-enters the air flue A under driving of the fan in a circulating mode, so that the energy-storage heat exchange purpose is realized.

The invention relates to an energy-storage heat exchange device. The energy-storage heat exchange device comprises an energy storage pile, a heat exchanger, a heating tube and a fan, wherein a thermal insulation layer A is arranged at the periphery of the energy storage pile; a gap between the energy storage pile and the thermal insulation layer A is taken as an air flue; a ventilating groove is formed in the energy storage pile; the fan is connected with the heat exchanger through a pipeline; the other end of the fan is accessed into the air flue A through a pipeline; the other end of the heat exchanger is accessed into an air flue B through a pipeline; the air flue A and the air flue B refer to air flues formed between opposite two ends in the energy storage pile and the thermal insulation layer A; an electric heating tube is arranged in the energy storage pile in a penetrating mode for heating the energy storage pile; under driving of the fan, air flow enters the energy storage pile through the air flue A; and air flow is heated by the energy storage pile. The energy-storage heat exchange device utilizes off-peak electricity to heat the energy storage pile, and utilizes the energy storage pile to slowly release heat for heating air flow to form hot air; and after entering the heat exchanger to exchange heat, hot air is changed into cold air for being blown into the fan, and re-enters the air flue A under driving of the fan in a circulating mode, so that the energy-storage heat exchange purpose is realized.

The invention relates to a method for preparing a conductive polymer / silsesquioxane composite electrode material, which comprises two reactions that: silsesquioxane with end benzene ring and sulfonating agent undergo sulfonation reaction to form a phenyl sulfonic acid group, silsesquioxane with end mercapto and oxidant undergo oxidation reaction to form a sulfonic acid group, and the silsesquioxane and an intrinsic conductive polymer monomer undergo in situ polymerization to form the composite electrode material. The method has simple process and low cost; the prepared conductive polymer nanocomposite material has good electric conductivity (more than 5S / m) and large specific surface area; and a super capacitor prepared from the electrode material has the characteristics of high specificpower, high specific energy, good recyclability and the like, and has good application prospect.

The invention discloses a biodegradable high-barrier type plastic product and a preparation method of the biodegradable high-barrier type plastic product. The plastic product is prepared from the following raw materials in percentage by weight: 55 percent to 80 percent of polylactic acid, 15 percent to 30 percent of poly(3-hydroxybutyrate-co-4-hydroxybutyrate), 2 percent to 5 percent of polyhydroxyalkanoate containing middle and long chains, 1 percent to 6 percent of grape fruit residue extract and 2 percent to 6 percent of hydrophobic nano silicon dioxide. According to the biodegradable high-barrier type plastic product, the poly(3-hydroxybutyrate-co-4-hydroxybutyrate) is used for toughening the polylactic acid; meanwhile, the low-molecular-weight polylactic acid is added to increase the compatibility of high-molecular-weight polylactic acid and the poly(3-hydroxybutyrate-co-4-hydroxybutyrate); the grape fruit residue extract is used for improving the thermal stability and machinability of the polyhydroxyalkanoate. The biodegradable high-barrier type plastic product provided by the invention has good mechanical strength, anti-falling property and water resistance and air resistance; a machining process is easy to control and the defective rate is low; the biodegradable high-barrier type plastic product can be applied to fields including food packages, cosmetic packages, medicine packages and the like.

The invention discloses a biodegradable agricultural film preparation method and belongs to the field of agricultural films. The preparation method disclosed by the invention comprises the steps: taking absolute ethyl alcohol, distilled water, nano titanium dioxide and a silane coupling agent, putting the nano titanium dioxide and the silane coupling agent into a container, adding the absolute ethyl alcohol and the distilled water, evenly stirring, adjusting a pH value, magnetically stirring, filtering to obtain filter cake, using the absolute ethyl alcohol to wash the filter cake and then drying to obtain dried matter; mixing extractive with water, evenly stirring, adding the dried matter, oscillating away from light, centrifuging, taking precipitate, using deionized water to wash the precipitate, vacuum freeze drying and grinding to obtain ground matter; mixing wrapping matter, distilled water and a hydrochloric acid solution, evenly stirring, adjusting a pH and ultrasonically dispersing to obtain dispersed matter; mixing the dispersed matter with absolute ethyl alcohol, ball milling to obtain ball milled liquid, ultrasonically dispersing azodiisobutyronitrile, polyethylene resin, acetone and ball milled liquid, recycling the acetone and pressing on a plate vulcanizing machine to obtain the biodegradable agricultural film.

The invention discloses a nano-iron compound / intermediate-phase carbon microsphere composite material and a preparation method thereof, in the composite material, a nano-iron compound is uniformly dispersed, coated or embedded in intermediate-phase carbon microspheres, and the mass fraction of the nano-iron compound is 0.1%-10%. The preparation method comprises the following steps: uniformly dispersing an oil-soluble iron precursor and a sulfur additive in asphalt, carrying out a thermal polymerization reaction under the conditions of proper temperature, pressure and inert atmosphere protection, separating a product to obtain a composite material precursor, and further carbonizing to prepare the nano iron compound / mesophase carbon microsphere composite material. The preparation method hasthe advantages that the oil-soluble iron precursor forms uniformly dispersed nanoparticles in situ, so that the formation of a high-quality mesophase carbon microsphere composite material is promoted,and the product yield and particle size can be regulated and controlled. The lithium ion battery negative electrode material prepared from the composite material has good electrochemical characteristics.

The present invention discloses a high tough resin and its preparation methods; its steps include: (2‑ methyl oxyl oxygen) ‑ acetic acid, 3‑ protected amino acid ‑ cytane carboxylic acid and organic alkali reactionReform 3‑ Protective amino acid ‑ cytane carboxylic acid; modify 3‑ protected amino acid ‑ cycol carboxylic acid, mix of mixture of mixture of amino -containing amino groups to obtain a mixture A; put mixed A in the reactor, Seal, nitrogen replacement, discharge air in the kettle, nitrogen filling at 180 ~ 250 ℃, the pressure is 0.6 to 1.5MPa, and the mixture B will be obtained.The material outlet valve, the material is leading, the cold water tank, the granular cutter cut the granules, and dry it to obtain high tough resin; the high tough resin has excellent light transmission and lower fog, that is, it has better transparencyAs well as excellent solvents, at the same time, it has high toughness.

The invention discloses an antistatic, friction-resistant and wear-resistant polyoxymethylene material and a preparation method thereof. The polyoxymethylene material is a mixture of polyoxymethylene, ionic liquid and polytetrafluoroethylene. Its preparation method is to vacuum-dry polyoxymethylene, ionic liquid and polytetrafluoroethylene at 80-120°C for 24-48 hours respectively; dry the polyoxymethylene, ionic liquid and polytetrafluoroethylene according to the mass ratio of 100:0.1-2 : 1-20, put into melt extrusion equipment and carry out melt extrusion at 170-200 DEG C to obtain a mixture; discharge the mixture from the melt extrusion equipment and lower to normal temperature to obtain a polyoxymethylene material. The polyoxymethylene material in the present invention has excellent antistatic performance and friction and wear resistance, and its preparation method only needs to use common melting extrusion equipment, and the industrial preparation is simple.