202 results about "Heat tolerance" patented technology

The invention relates to a full aromatic fluorine containing transparent polyimide film. Structural formula of molecule thereof is shown above, wherein -R1 is a divalent residue of fluorine containing aromatic binary primary amine, and -R2 is a divalent connecting group of aromatic binary anhydride molecule. The preparation method thereof comprises steps of adding the fluorine containing aromatic binary primary amine and strongly polar non-protonic organic solvent into a polymerizing bottle, stirring at room temperature, after being completely dissolved, adding the aromatic binary anhydride, stirring, after 3 hours reaction, obtaining transparent and thick fluorine containing aromatic polyamide acid resin solution having homogeneous phase; and using the strongly polar non-protonic organic solvent to regulate viscosity of the fluorine containing aromatic polyamide acid resin solution, forming film, heating, carrying out dehydrating hot-imidization reaction, cooling, demoulding, thus obtaining the full aromatic fluorine containing transparent polyimide film. The preparation method has mild reaction condition, simple operation and low cost and is environment friendly. The full aromatic fluorine containing transparent polyimide film has excellent mechanical property and heat tolerance and visible light transmission thereof is up to 95%.

The invention discloses particulates with double functions of internal radiotherapy and thermal therapy, and a preparation method thereof. The particulates are mainly compounded and formed by glass containing radioactive species yttrium-90 or / and phosphorus-32, and solid ferrite with magnetocaloric effect. When the particulates intervene in vivo, the radioactive species yttrium-90 or / and the phosphorus-32 contained in the glass can release Beta rays in vivo to kill cancer cells intervening in surrounding tissues without damaging the distant healthy tissues; the solid ferrite has good hysteresis exothermicity and can transform exosomatic magnetic energy into heat energy so as to release heat under the action of an external alternating magnetic field, so that the temperature around the tumor area can raise to 43 to 47 DEG C within a short time, and tumour cells intervening in the surrounding tissues are burnt and killed without influencing normal cells with better heat tolerance, thereby realizing the purpose of treating tumor by combining the internal radiotherapy and the thermotherapy, and having double lethality to cancer cells. The method for combining the radiation treatment and the heat treatment is an indispensable supplementary therapy means to treat the malignant tumor with chemical drug resistance. In addition, the particulates have good chemical stability and biocompatibility, and have great application prospect in the aspect of treating the malignant tumor.

The invention relates to a low alloy heat-resisting steel submerged arc-welding wire, wherein the welding wire comprises the following components in weight percent: 0.05 to 016 of C, 0.40 to 1.00 of Mn, 0.05 to 0.35 of Si, less than and equal to 0.015 of S, less than and equal to 0.015 of P, less than and equal to 0.35 of Cu, 0.70 to 1.60 of Cr, less than and equal to 0.20 of Ni, 0.40 to 0.80 of Mo, less than and equal to 0.005 of V and the balance being Fe. Besides C, Si, Mn, S and P, the welding wire adopts a Cr-Mo alloy element heat-resisting system, the designed composition is simple, and the welding wire has the same strength, toughness and heat tolerance as the low alloy heat-resisting steel 12CrMo steel; the comprehensive performance of the deposited metal obtained by the welding wire is as follows: the yield strength is more than and equal to 485MPa, the tensile strength is more than and equal to 550MPa, and the elongation is more than and equal to 20 percent; and, the Akv at the temperature of 20 Celsius degrees below zero is more than and equal to 27J.

The invention relates to a method for producing a heat-resistant polylactic resin injection molded product, which comprises the following steps: after mixture containing a raw material of polylactic acid and a component of nucleating agent is conveyed to an injection molding machine to be preliminarily molded into a semi-finished product, the semi-finished product is quickly cooled down below a preset temperature, taken out from the die, moved to a heating device for reheating, and heated at the temperature between 100 and 150 DEG C to be produced into a molded product; after the heating is finished, the molded product is cooled down below the glass transition temperature of the raw material of polylactic acid and then taken out, so as to obtain the heat-resistant injection molded product. Through the reheating treatment, the semi-finished product can still have stable structure through recrystallization; besides, the time of using the molding die for the semi-finished product can be reduced; therefore, the production efficiency can be effectively improved, and the production cost can be reduced.

The invention discloses a process for preparing a high temperature resistance polymolecular layer boundary lubrication film for a titanium based material surface. The process comprises the following steps: hydroxylating the surface of a clean titanium based material which is grinded, polished and cleaned by adopting alkali treatment, anode oxidation, Piranha solution treatment and other methods; grating an oxidized graphene nano-wafer on the hydroxylated surface of the titanium based material through a silane coupling agent; putting the titanium based material of which the surface is grafted by the oxidized graphene nano-wafer in an oxidized graphene nano-wafer water solution, performing a radical polymerization reaction and drying to prepare a latticed high temperature resistance polymolecular layer boundary lubrication film, namely hydrogel. According to the method, the abrasion resistance of the surface of the titanium-based material is modified by utilizing the hydrogel organic polymer material for the first time, the advantages of low friction coefficient and good heat tolerance of hydrogel can be played sufficiently, the abrasion resistance of the titanium-based material surface in a dry-state environment can be effectively improved, and the application range of the titanium-based material is enlarged. The process has a definite scientific meaning and great application value.

An elevator guide rail attaching device for attaching a guide rail inside a hoistway, wherein an elastic body (18) is held between a flat bracket (17) fixed to a hoistway wall (1) and a rail side bracket (6), and is secured in place using a fastener (15). In the device for attaching an elevator guide rail, this configuration allows torque to be controlled at a torque value that has a pronounced anti-vibration effect independent of the fastening torque between the guide rail and a rail clip. Furthermore, the components can be fixed by welding even when using an elastic body with a low heat tolerance.

The invention discloses a reptile-derived antibacterial peptide Alligatorin5, an amino acid sequence thereof and applications of the antibacterial peptide in the antibacterial field. The antibacterial peptide Alligatorin5 is derived from Chinese alligator. By searching a Chinese alligator gene database, screening and analyzing, a mature peptide sequence of the antibacterial peptide is obtained. The amino acid sequence of the antibacterial peptide Alligatorin5 is shown as SEQ ID NO.1 in a sequence table. By comparative analysis, the antibacterial peptide Alligatorin5 is obviously different from amino acid sequences of antibacterial peptides known at present, and belongs to a novel antibacterial pepetide. Antibacterial experiments show that: the antibacterial peptide Alligatorin5 has high antibacterial activity for gram positive bacteria, gram negative bacteria and funguses, and is broad in antibacterial spectrum and efficient; the antibacterial peptide Alligatorin5 has characteristics of low hemolytic activity, salt tolerance, heat tolerance, good thermal stability, and the like, and can be used for the fields of medicines, cosmetics, food fresh-keeping and the breeding industry.

Provided is a colorant dispersion liquid that enables the formation of a coating film having an excellent heat tolerance and high brightness while adjusting the film color to a desired tone. The colorant dispersion liquid comprises a colorant (A), a dispersant (B) an a solvent (C), wherein the colorant (A) contains at least a colorant (A-1) in which a cation represented by general formula (I) forms a salt together with a monovalent anion represented by general formula (II). [In general formulae (I) and (II), the meaning of each symbol is as defined in the description.]

The invention provides an electrolytic capacitor with soft solder of excellent heat tolerance and longevity. The invention also provides a method for manufacturing an electrolytic capacitor comprising the steps of: forming a capacitor element having a pair of electrode foils wound with a separator interposed therebetween; impregnating the capacitor element with a dispersion solution containing particles of an electrically conductive solid or aggregates thereof and a solvent to form a planar electrically conductive solid layer having the particles of the electrically conductive solid or the aggregates thereof on the surfaces of the electrode foils and the separator; and impregnating the capacitor element having the electrically conductive solid layer with an electrolytic solution.

A photoresist composition including an oxetane-containing compound represented by Formula 1 or 2, an oxirane-containing compound represented by Formula 3 or 4, a photoinitiator, and a solvent, a method of forming a pattern using the photoresist composition, and an inkjet print head including a polymerization product of the photoresist composition.The photoresist composition provides a polymerization product which resists formation of cracks due to an inner stress, and has excellent heat tolerance, excellent chemical resistance, excellent adhesiveness, and excellent durability.