52results about How to "Avoid volatile" patented technology

The invention discloses a preparation method of an NTC (Negative Temperature Coefficient) nickel-based thermistor material. The preparation method comprises the following steps: preparing materials according to a molecular formula (Ni1-xZnx)1-yFeyO, wherein x is greater than or equal to 0.01 and less than or equal to 0.04 and y is greater than or equal to 0.001 and less than or equal to 0.005; calcining by sections to obtain nickel-based resistor powder; then mixing the nickel-based resistor powder with conductive filler prepared by compounding maleic anhydride grafted polyvinylidene fluorideand polyphenylene sulfide; extruding and granulating through a double-screw extruder; carrying out mold pressing and forming to prepare the nickel-based thermistor material. According to the preparation method disclosed by the invention, the nickel-based resistor material is prepared by adopting sectioned calcining for the first time; the first section is carried out at 650 to 760 DEG C and the second section is carried out at 930 to 980 DEG C; the problem that transition metal including nickel, iron and the like is easy to volatilize through one-time high-temperature calcining is avoided; a high molecular polymer is prepared by compounding the maleic anhydride grafted polyvinylidene fluoride and the polyphenylene sulfide and the high-temperature-resisting conductive filler is prepared; the nickel-based thermistor material prepared by compounding the high molecular polymer and the high-temperature-resisting conductive filler has uniform components and has relatively high high-temperature-resisting and high-voltage-resisting capabilities.

The invention discloses a phosphor-fluorine flame retardant and a preparation method thereof. The structure of the phosphor-fluorine flame retardant is shown in the description, wherein n is a positive integer of 1 to 50. The flame retardant is a condensed high polymer phosphor-fluorine flame retardant which is synthesized by taking bisphenol AF and dichlorophenylphosphine oxide as raw materials and has a phosphor-fluorine synergistic effect, has a better flame-retardant effect, and has the advantages of good weather ability, as well as lower toxicity and the like compared with a traditional flame retardant; after the phosphor-fluorine flame retardant is added into a high polymer material, a separation-out phenomenon is avoided.

The invention discloses an automatic intelligent container paint mixing and conveying system. The automatic intelligent container paint mixing and conveying system comprises a paint conveying mechanism, an intelligent online metering paint mixing mechanism and a tube-type mixer, wherein the paint conveying mechanism is connected with a transition barrel, the intelligent online metering paint mixing mechanism is arranged between the transition barrel and paint mixing barrels, the intelligent online metering paint mixing mechanism comprises pneumatic control ball valves, online meters and an automatic control box, the tube-type mixer is connected with a multi-path distributor which is provided with one or more outlets, the outlets are connected with a paint spraying machine through arranged paint spraying pumps, the multi-path distributor is connected with a low-pressure circulation loop, and a pipeline between the paint spraying pumps and the paint spraying machine is further provided with a high-pressure cleaning loop. According to the automatic intelligent container paint mixing and conveying system and a using method thereof, labor intensity of operating personnel is relieved through full automatic running, and the situation that an inaccurate paint mixing proportion or mistaken use of solvents leads to scrapping of a whole barrel of paint or damage to the surface of a container can be avoided.

The invention provides a cigarette chrysanthemum morifolium perfume and a preparation method and application of a micro capsule thereof. The preparation method comprises the steps that dried chrysanthemum morifolium is pulverized, filtering and concentrating are conducted after percolation extraction is conducted to obtain mango extract; the extract is dissolved in ethanol, a ceramic microfiltration membrane and an organic ultrafiltration membrane are utilized to remove large and small molecular impurities respectively, and mango perfume is obtained after pressure reduction and recovery are conducted; water is added to dissolve the mango perfume, an emulsion agent is added to conduct high speed emulsion, a sodium alginate solution is added, uniformly mixed and poured into atomizing condensation equipment to prepare the micro capsule in an atomizing manner, and the micro capsule is received by a calcium chloride solution. The micro capsule is washed by ethanol and pure water, frozen anddried to obtain finished product micro capsule. The invention further provides the application of the micro capsule in cigarettes, the micro capsule is added to a composite filter rod, rolled and produced into a cigarette. After adding the micro capsule, the fragrance amount can be obviously increased, flower fragrance is outstanding, the fragrance is harmony, sweet taste is increased, irritationand impurity gas can be reduced, therefore smoking fume is gentle, and remaining smell is comfortable.