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

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 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 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.