10 results about "Ceiling temperature" patented technology

The invention provides an electrolyte, a secondary battery and an electrolyte preparation method, and belongs to the technical field of secondary batteries, and the electrolyte comprises a lithium salt, a solvent and a thermal runaway blocking agent. Wherein the thermal runaway blocking agent comprises an inner core and a shell located on the outer side of the inner core, the inner core comprises a polymer formed by polymerizing a melamine compound, an amino-containing nitrogen-containing compound and an aldehyde compound, and the shell comprises a fluorine-containing flame retardant. According to the electrolyte disclosed by the invention, in the thermal runaway process of the battery, the thermal runaway blocking agent is used for carrying out physical blocking, chemical capture and atmosphere dilution on a chain reactant on the surface of a negative electrode to block a chain exothermic reaction generated by oxygen released by decomposition of the negative electrode and a positive electrode, so that the thermal runaway initial temperature of the battery is effectively increased; the maximum thermal runaway temperature of the battery is reduced, and the thermal safety performance of the battery is remarkably improved.

This invention discloses a high-temperature resistant, heat-insulating, ceramizable fire-resistant sealing adhesive and its preparation method. The fire-resistant sealing adhesive comprises the following raw materials: base adhesive, dimethyl silicone oil, flame retardant, composite ceramic powder, additive filler, flux, silane coupling agent, crosslinking agent, functional filler, and catalyst. The functional filler is composed of fumed silica, high-temperature resistant aerogel powder, and silicon carbide powder, with a mass ratio of 40-50:20-30:20-30. Through the specific selection of multi-stage filler compounding, this invention achieves a balance between room-temperature performance and the high-temperature ceramization process that is unattainable in existing technologies. Its flame retardant rating can reach V0, its fire resistance limit is greater than 4.5 hours, and during the burning process, the highest temperature on the unexposed surface does not exceed 110°C.

Provided is a sheet containing a fluorine-containing copolymer. The arithmetic mean surface roughness Ra of at least one surface of the sheet is 5.0 μm or less, and the thickness of the sheet is 4 mm or less. Also provided is a method for producing a sheet containing a fluorine-containing copolymer, in which method a raw material containing a fluorine-containing copolymer is wound around a roll by a roll kneader equipped with at least one pair of rolls to form a sheet, the maximum temperature of the raw material when forming the sheet is 60°C or more, and the thickness of the obtained sheet is 4 mm or less.

Disclosed herein is a high temperature insulating composite comprising a gel processed polymer matrix, insulating particles, and other components. In some embodiments, the high temperature insulating composites comprise less than 35% by weight of a gel processed polymer matrix, more than 40% by weight of insulating particles, and less than 35% by weight of other materials. The other materials include, but are not limited to, opacifying agents, antioxidants, reinforcing fibers, and combinations thereof. Further, the thermally insulating composite material has at least one of the following properties: an average maximum temperature of less than about 250 DEG C, a z-direction strength of at least about 25 N, a compressibility at 1 MPa of less than about 35%. The high-temperature insulating composite material can be formed into a thin and robust shape, thereby facilitating the preparation of a molding material suitable for target applications. The thermally insulating composite material can function as a protective heat propagation barrier when exposed to temperatures above 300 DEG C.

A process for reducing the volatile organic compound content of a plastic mass to below 65 ppm (VOC, VDA 277), the plastic mass having a density equal to or below 883 kg / m 3 and a MFR2 (ISO 1133 at 2.16 kg load and 190°C) of 100.0 g / 10 min or lower; the process comprising the steps of: a) providing a raw plastic mass in particulate form, the raw plastic mass having a density equal to or below 883 kg / m 3 and a MFR2 (ISO 1133 at 2.16 kg load and 190°C) of 100.0 g / 10 min or lower; and a volatile organic compound content (VOC, VDA 277) of above 150 ppm, and particles having an average D50 diameter of 2.5 mm to 4.5 mm; b) subjecting the particulate raw plastic mass to at least one intensified hydrodynamic system at a minimum temperature of at least 20°C and a maximum temperature of 4°C lower than the Vicat temperature (10 N, ISO 306) of the particulate raw plastic mass or the lower value of 35°C, wherein the intensified hydrodynamic system is a fluidized bed system, wherein the superficial gas flow rate is above the minimum fluidization velocity and the superficial gas flow rate is at least 40 cm / s, the temperature being measured at the gas inlet of the fast fluidization system, c) recovering the particulate plastic mass.

Method for joining a metal element (11) and a resin element (12), wherein a thermoplastic resin (50) is placed between the metal element (11) and the resin element (12), wherein the resin element is a thermo-cured resin element (12), wherein the thermo-cured resin of the thermo-cured resin element is not melted by heat, and The process is implemented by friction stir welding, in which the metal element (11) and the thermo-cured resin element (12), with the thermoplastic resin (50) placed between them, are stacked on top of each other, a rotating rotary tool (16) is pressed against the metal element (11) to generate frictional heat, thereby softening and melting the thermoplastic resin (50), and then the molten thermoplastic resin (50) solidifies to join the metal element (11) and the thermo-cured resin element (12). including friction stir welding: a first step of stacking the metal element (11) and the thermo-cured resin element (12) on top of each other with the thermoplastic resin (50) in between; and a second step of pressing the rotating tool (16) against the metal element (11) to generate frictional heat, thereby softening and melting the thermoplastic resin (50), and solidifying the molten thermoplastic resin to join the metal element (11) and the resin element (12) together, characterized by that the second step comprises an immersion / stirring process of immersing the rotary tool (16) into the metal element (11) to a depth close to an interface (13) between the metal element (11) and the thermoplastic resin (50), but not reaching it, wherein the second step comprises a preheating process of rotating the rotary tool (16), wherein only a front end of the rotary tool (16) is in contact with the surface of the metal element (11), wherein the preheating process is carried out before the immersion / stirring process, wherein during the preheating process the rotary tool (16) may only rotate under a first pressure for a first pressing time, and During the immersion / stirring process, the rotary tool (16) may only rotate for a second pressing time, which is shorter than the first pressing time, under a second pressure that is greater than the first pressure. wherein the thermoplastic resin (50) placed between the metal element (11) and the thermosetting resin element (12) has a thickness greater than 50 µm and less than or equal to 600 µm, preferably from 100 µm to 550 µm, wherein the melting point Tm (°C) of the thermoplastic polymer is 140-350°C, in particular 140-300°C, and wherein the connection temperature, which is the highest temperature of the region (112) located directly below it at an interface between the thermoplastic resin (50) and the resin element (12), is Tm - 50°C to Tm + 150°C, wherein acid-modified polyolefin, thermoplastic epoxy polymer, polyamide or vinyl acetate-containing polymer is used as the thermoplastic resin and When using acid-modified polyolefin as a thermoplastic resin (50), the joining temperature Tm to Tm + 150°C, suitable Tm + 20°C to Tm + 130°C, far more suitable T + 70°C to Tm + 120°C, When using a thermoplastic epoxy polymer as the thermoplastic resin (50), the joining temperature Tm - 50°C to Tm + 30°C is suitable, Tm - 10°C to Tm + 20°C, When using polyamide as a thermoplastic resin (50), the joining temperature is Tm + 10°C to Tm + 70°C, suitable Tm + 20°C to Tm + 60°C and When using a vinyl acetate-containing polymer as a thermoplastic resin (50), the joining temperature Tm is to Tm + 80°C.

The utility model discloses a kind of concrete blocks combined with microcapsule phase change material, it is related to concrete block technical field, the concrete block includes block main body, the top of the block main body is equidistantly provided with multiple positioning blocks, the bottom of the block main body is equidistantly provided with multiple positioning grooves, and positioning groove and positioning block are adapted between, and the block main body includes microcapsule phase change material main body.In the utility model, the microcapsule phase change material main body of block built-in, its kernel paraffin-fatty acid composite phase change material can be in 20~28 ℃ interval high-efficiency heat absorption and release, reduce indoor maximum temperature 2~5 ℃ in summer, reduce heat loss 15~25% in winter, realize building energy saving and indoor thermal comfort promotion, shell melamine-formaldehyde resin can completely block phase change material leakage, guarantee the stable temperature control life of block more than 15 years, avoid the functional attenuation caused by material loss of conventional phase change block.

The invention discloses a preparation method of a high volume resistivity electrostatic chuck, and belongs to the technical field of electrostatic chucks, and the preparation method comprises the following steps: burdening: burdening 97-99 parts of aluminum nitride, 0.1-1.5 parts of Y2O3, 0.1-0.5 part of MgO, 0.1-0.5 part of CaO or 0.1-1 part of TiO2, adding 12-14 wt% of a binder, 0.4-0.6 wt% of a dispersant and 28-32 wt% of an ethanol solvent, and mixing; ball milling: the material-ball ratio is 1: 1.5, the time is 21-29 hours, and the rotating speed is 90-110 rpm; the air inlet temperature is set to be 135 DEG C, the air outlet temperature is set to be 85 DEG C, the rotating speed of an atomizing disc is set to be 6000 rpm, the oxygen concentration is set to be 1.0%, and the rotating speed of a feeding pump is set to be 50 rpm; dry pressing: the pressure is 5-20 MPa, and the pressure holding time is 1-5 min; glue discharging is carried out after dry pressing, the glue discharging temperature is 450-550 DEG C, the heating rate is 0.2 DEG C / min, and the heat preservation time is 5-8 h at the highest temperature; sintering: sintering after glue discharging; and performance detection is carried out after grinding and sample preparation.

The application discloses a phenylene-connected metal ruthenium (II) homogeneous linear polymer material, an evaporator and a preparation method and application thereof; an organic ligand infinite bridging new metal center of a structure shown in I is formed to form a phenylene-connected metal ruthenium (II) homogeneous linear polymer material; on the performance, the polymer material has excellent photo-thermal conversion performance while retaining the excellent optical performance of the metal ruthenium (II) complex and combining the structural advantages of the supramolecular MOFs material. Under the irradiation of 2W / cm 2 of 808nm laser, the polymer material can reach a highest temperature of 335.7 DEG C. The evaporator is prepared for a water evaporation process, under the irradiation of 808nm laser, the water evaporation amount is 0.81kg·m ‑2 , the evaporation efficiency is 1.63kg·m ‑2 ·h ‑1 , and the evaporator has excellent water quality purification capacity for salt removal and organic matter removal.

A propylene polymer has a melt flow rate (MFR), as determined under conditions of a measurement temperature of 230° C. in accordance with ASTM 1238 standard, in a range of 0.01 g / 10 min or more and 1000 g / 10 min or less. The propylene polymer further has a maximum temperature (Tm−maxv) at which heat absorption is zero in differential scanning calorimetry (DSC) at a heating condition of 10° C. / min, of 169.0° C. or higher and 220° C. or lower. The propylene polymer satisfies two or more of the following requirements: (Mz / Mw determined by gel permeation chromatography (GPC) is 3.50 or more and 5.65 or less; a difference between Mw / Mn and Mz / Mw determined by GPC is 8.3 or less; and a decane soluble component content (C10sol.)( / wt %) and MFR ( / (g / 10 min)) that satisfies the following relational expression:(C⁢10⁢sol.)-4 / 3×Log(MFR )≤2.3⁢0.