13results about How to "Good temperature sensitivity" patented technology

The invention belongs to the technical field of biological medicine, and particularly relates to peptide slow-release temperature-sensitive hydrogel as well as a composition, a preparation method and application thereof. The composition consists of a hydrogel monomer polymer and biological peptide, wherein the biological peptide is Leucokinin VIII, and the biological peptide is Leucokinin VIII The hydrogel monomer polymer is prepared by mixing and heating polyethylene glycol, lactide and stannous zincate. The preparation method of the peptide slow-release temperature-sensitive hydrogel comprises the following steps: mixing polyethylene glycol, lactide and stannous zincate, and carrying out heating and stirring reaction to prepare a hydrogel monomer polymer; and then mixing the hydrogel monomer polymer with the Leucokinin VIII, so as to obtain the peptide slow-release temperature-sensitive hydrogel. The peptide sustained-release temperature-sensitive hydrogel has the advantages of excellent temperature-sensitive characteristic, injectability, drug sustained-release performance, biocompatibility and biological safety.

The utility model relates to the technical field of resistor manufacturing, in particular to a surface electrode type NTC (Negative Temperature Coefficient) thermistor. The surface electrode type NTC thermistor comprises an NTC ceramic substrate, an electrode layer and a protective layer, the electrode layer comprises a surface electrode and two outer electrodes, the electrode layer is located on the NTC ceramic substrate, and the protective layer is located above the electrode layer. The device has the advantages of high manufacturing precision, simplicity in manufacturing and low cost.

The invention discloses a preparation method of high-manganese high-aluminum non-magnetic steel and the high-manganese high-aluminum non-magnetic steel, and the method comprises the following steps: carrying out three-stage heating on a continuous casting slab to obtain a heated slab, the method comprises the following steps: (1) a continuous casting slab is subjected to continuous casting at a preheating section, a heating section and a soaking section, and the heating section and the soaking section meet the following conditions: (1) the width of the continuous casting slab is 950-1250 mm, the highest temperature of the heating section is 1210-1230 DEG C, and the time of the heating section is 60-90 minutes; the temperature of the soaking section is 1190-1210 DEG C, and the time of the soaking section is 30-60 minutes; (2) the width of the continuous casting slab is 1250-1850 mm, the highest temperature of a heating section is 1240-1260 DEG C, the time of the heating section is 60-90 min, the temperature of a soaking section is 1220-1240 DEG C, and the time of the soaking section is 30-60 min; (3) the width of the continuous casting slab ranges from 1850 mm to 2100 mm, the highest temperature of a heating section ranges from 1270 DEG C to 1290 DEG C, the time of the heating section ranges from 60 min to 90 min, the temperature of a soaking section ranges from 1240 DEG C to 1260 DEG C, and the time of the soaking section ranges from 30 min to 60 min; and the heated plate blank is rolled and coiled through a hot continuous rolling mill, and the high-manganese high-aluminum non-magnetic steel is obtained. The method provided by the invention can realize efficient production and stable performance.

The invention belongs to the technical field of asphalt modification, and discloses a preparation method of bio-oil modified asphalt. The preparation method of the bio-oil modified asphalt comprises the following steps: heating the matrix asphalt to a first temperature, then adding the plant-based bio-oil into the matrix asphalt while heating until the matrix asphalt is heated to a second temperature, and then dispersing to obtain the bio-oil modified asphalt.

The invention discloses plant essential oil mosquito-repelling slow-release gel and a preparation method thereof, and belongs to the field of mosquito-repelling materials. The plant essential oil mosquito-repelling slow-release gel disclosed by the invention is prepared from the following raw material components: plant essential oil microcapsules, modified graphene oxide, hydroxybutyl chitosan and hyaluronic acid, wherein the plant essential oil microcapsules are obtained by wrapping compound plant essential oil with gelatin and Arabic gum as shell materials; the modified graphene oxide is obtained by modifying graphene oxide with dopamine; wherein the compound plant essential oil is prepared from the following components in parts by weight: 20 to 30 parts of peppermint oil, 15 to 25 parts of litsea cubeba oil, 15 to 25 parts of cananga odorata oil, 10 to 20 parts of bay oil and 15 to 25 parts of ginger oil; the plant essential oil mosquito-repelling slow-release gel prepared by the invention has the advantages of better slow-release effect, better mosquito-repelling effect, higher mechanical strength and soothing smell.

The invention belongs to the technical field of fluorescent materials, and discloses fluorescent powder as well as a preparation method and application thereof. The chemical formula of the fluorescent powder is Ba < 2.92 > Mg < 0.08 > BP3O12: 12% Eu < 2 + > / Eu < 3 + >. The fluorescent powder not only can be applied to the field of optical temperature measurement, but also can be applied to the field of white light LED illumination. When being applied to optical temperature measurement, the optical temperature sensor has the advantages of quick effect, high resolution, high sensitivity, high temperature resistance, no need of direct contact with an object and the like, and can still ensure high discrimination degree of signals while performing high-sensitivity test. The fluorescent powder can be used as a white light LED device after being mixed with commercial fluorescent powder, white light emitted by the prepared LED device is high in color rendering index and high in luminous efficiency, and the light color does not change along with the change of current and temperature and is stable.

Provided is a thermostat device with which a flow rate of a cooling liquid from a bypass passage can be adequately ensured and which has excellent temperature sensitivity corresponding to the temperature of the cooling liquid from an engine. A thermo-operating unit 2 is provided with a control valve 2c for controlling an introduction quantity of cooling liquid from a first inflow port 5a via a radiator, corresponding to the temperature of the cooling liquid from a second inflow port 4b via a bypass passage. Within the housing 3 are provided a plurality of guide bodies 4g which are formed extending from the second inflow port 4b side toward a thermo-element 2a, are arranged intermittently around the thermo-element 2a, and which support the thermo-element 2a in such a way as to be capable of moving in an axial direction, and cooling liquid rectifying claws 4h arranged spaced apart from the thermo-element 2a between the guide bodies 4g, wherein a detoured passage 4i for the cooling liquid, directed from the second inflow port 4b side toward an outflow port 4c, is formed by forming gap portions between the guide bodies 4g and the cooling liquid rectifying claws 4h.

The invention discloses a temperature-sensitive gel and a preparation method thereof, and belongs to the technical field of gels, and the temperature-sensitive gel provided by the invention is prepared by mixing a temperature-sensitive material N-isopropylacrylamide containing double bonds with a self-made modified cross-linking agent, then adding a photoinitiator 2-hydroxy-1-[4-(2-hydroxyethoxy) phenyl]-2-methyl-1-acetone, then adding a photoinitiator 2-hydroxy-1-[4-(2-hydroxyethoxy) phenyl]-2-methyl-1-acetone, and finally adding an initiator 2-hydroxy-1-[4-(2-hydroxyethoxy) phenyl]-2-methyl-1-acetone to prepare the temperature- and finally, carrying out cross-linking polymerization under the action of ultraviolet rays with the wavelength of 365 nm. Through detection, the prepared temperature-sensitive gel has excellent temperature-sensitive characteristics, meanwhile, a modified cross-linking agent is prepared by improving the cross-linking agent, then the modified cross-linking agent is applied to the preparation process of the temperature-sensitive gel, and the finally prepared temperature-sensitive gel has the advantages that the antibacterial performance is remarkably improved on the basis that the excellent temperature-sensitive characteristics are reserved; the temperature-sensitive gel prepared by the invention can be applied to the field of repairing of wounds of skin, oral cavity, esophageal mucosa and the like.

The invention provides MYDGF-loaded hydrogel, a preparation method and application of the MYDGF-loaded hydrogel in wound repair drugs, and belongs to the technical field of biomedical engineering. The preparation method of the MYDGF-loaded hydrogel comprises the following steps: dissolving PF-127 powder in a PBS (Phosphate Buffer Solution) at 0-8 DEG C to obtain PF-127 / PBS hydrogel; the preparation method comprises the following steps: dissolving MYDGF in water to obtain an MYDGF solution; at the temperature of 0-8 DEG C, the PF-127 / PBS hydrogel and the MYDGF liquid are mixed and stirred to be uniform, and the hydrogel loaded with the MYDGF is obtained. The MYDGF-loaded hydrogel disclosed by the invention has a good temperature-sensitive characteristic at 36-37 DEG C, and can be deformed and attached to a wound surface after being applied to the human skin wound surface, so that the biological adaptability of the hydrogel is improved. The MYDGF-loaded hydrogel disclosed by the invention can still keep the stability of the hydrogel structure, so that the MYDGF can still be continuously and stably released in a complex microenvironment, and the defect of unstable release of a traditional gel medicine is overcome. The MYDGF-loaded hydrogel can also improve the microcirculation of the wound surface, promote angiogenesis and accelerate the healing process of the wound surface.

This invention relates to a flexible wearable thermosensitive fiber, its preparation method, and its applications. The flexible wearable thermosensitive fiber includes a conductive fiber and a thermosensitive coating, an external electrode layer, and an encapsulation protective layer sequentially coated on the outer surface of any one end of the conductive fiber. The conductive fiber and the external electrode layer are not in contact. An insulating layer is also disposed between the thermosensitive coating and the external electrode layer within the axial projection area of ​​the conductive fiber. The thermosensitive coating is based on a polymer matrix, and the matrix includes a thermosensitive material. The flexible wearable thermosensitive fiber also includes a detection end lead, which penetrates the encapsulation protective layer and forms an electrical connection with the external electrode layer. This flexible wearable thermosensitive fiber has low resistance and excellent mechanical properties, enabling sensitive, accurate, and rapid temperature detection. Wearable temperature sensors made from this flexible wearable thermosensitive fiber can be well applied in the medical field for body temperature detection.

The invention discloses a geocell strip and a preparation method and application thereof.The geocell strip is formed by compounding a geogrid and geotextile, and the geogrid is prepared through the following steps that a warp knitting machine is used for weaving composite fiber bundles into a geogrid body, the geogrid body is coated with a modified asphalt coating, drying is conducted, and the geocell strip is obtained. The geogrid is obtained; the composite fiber bundles are formed by secondarily twisting polyester filament yarns, carbon fibers and polyphenylene sulfide fibers; the modified asphalt coating is prepared from asphalt, SBS, natural rubber, polyphenylene sulfide, basalt fibers, antimony trioxide, polyvinylpyrrolidone and sodium dodecyl benzene sulfonate. The polyester filaments, the carbon fibers and the polyphenylene sulfide fibers are compounded and woven into the geogrid body, the tensile strength, the wear resistance and the durability of the geogrid are enhanced, the asphalt coating is further improved, the temperature sensitivity of asphalt is improved, and the crack resistance, the chemical stability, the oil resistance, the mechanical strength and the wear resistance are improved.

The present invention discloses a thermosensitive two-phase structured emulsion gel and a preparation method and application thereof. The emulsion gel uses a solution of glycyrrhizic acid or a glycyrrhizic acid derivative as an aqueous phase and a lipophilic gelling agent dissolved in liquid oil as an oil phase, and utilizes the characteristics of two-phase thermal melting and condensation to prepare a thermosensitive two-phase structured emulsion gel. The emulsion gel has excellent mechanical properties and temperature response characteristics, can effectively load and protect hydrophilic / hydrophobic active substances, and achieve controlled release of flavor substances. The invention has a simple preparation process, mild conditions, and is easy to mass produce. It can be used as a plastic fat substitute in future food processing, cosmetics, medicine, and other fields such as artificial meat.

Provided is a thermostat device with which a flow rate of a cooling liquid from a bypass passage can be adequately ensured and which has excellent temperature sensitivity corresponding to the temperature of the cooling liquid from an engine. A thermo-operating unit 2 is provided with a control valve 2c for controlling an introduction quantity of cooling liquid from a first inflow port 5a via a radiator, corresponding to the temperature of the cooling liquid from a second inflow port 4b via a bypass passage. Within the housing 3 are provided a plurality of guide bodies 4g which are formed extending from the second inflow port 4b side toward a thermo-element 2a, are arranged intermittently around the thermo-element 2a, and which support the thermo-element 2a in such a way as to be capable of moving in an axial direction, and cooling liquid rectifying claws 4h arranged spaced apart from the thermo-element 2a between the guide bodies 4g, wherein a detoured passage 4i for the cooling liquid, directed from the second inflow port 4b side toward an outflow port 4c, is formed by forming gap portions between the guide bodies 4g and the cooling liquid rectifying claws 4h.