58results about How to "Large amount of gas" patented technology

The invention relates to the technical field of PVC materials, in particular to a PVC (polyvinyl chloride) foam material for a sole and a preparation method of the PVC foam material. The PVC foam material for the sole comprises raw materials in parts by weight as follows: 80-120 parts of PVC resin, 40-60 parts of a plasticizer, 20-30 parts of a filling agent, 6-10 parts of a wear-resistant modifier, 4-8 parts of a thermal stabilizer, 2-4 parts of a foaming agent, 0.8-1.2 parts of a lubricant and 1-2 parts of a processing aid. The raw materials are adopted for preparation of the PVC foam material for the sole, the weight proportion of the raw materials is controlled strictly, the performance of the prepared PVC foam material for the sole exceeds the national standards, and the PVC foam material is environment-friendly and has good temperature resistance and weather resistance, high strength, excellent anti-impact performance, good flame-retardant effect, good processing performance and excellent comprehensive performance.

The invention relates to a process for preparing gas by the microwave carbon pyrolysis of municipal solid waste and belongs to the technical field of environmental protection. The process comprises the following steps of: removing dust from municipal solid waste which is accumulated for a certain time, press-packing, and feeding into microwave heating equipment for pyrolysis; separating fixed carbon and residue which are generated by the pyrolysis, and making the fixed carbon into a shape which is loose and through which gas can conveniently pass; continuously heating the fixed carbon, and fully cracking incomplete pyrolysis gas and biological oil to generate combustible gas; reacting water vapor and thermofixed carbon to generate water gas; and performing purification treatment such as desulfurization and dephosphorization on the gas to obtain harmless combustible gas. By the process, the yield of the gas is high, the calorific value is high, the energy is equal to or higher than the energy consumed by the process, and the operation cost is low; and toxic and substances with peculiar smell such as dioxin are eradicated while a large amount of harmless combustible gas is obtained, so that the environment is effectively protected.

The invention discloses a thermoplastic polyamide elastomer physical and chemical combined foam material and a preparation method thereof. The preparation method comprises the following steps: (1), extruding a mixture of polyamide elastomer, a melt viscosity regulator, a cell nucleating agent and a foaming aid by an extruder to obtain foaming particles; (2), mixing the foaming particles, a surfactant and a chemical foaming agent in a reactor, heating the mixture in an inert atmosphere, starting stirring and keeping the temperature; heating the mixture continuously, adding a physical foaming agent to pressurize the reactor, performing pressure relief after heat preservation and pressure keeping, and performing cooling and shaping to obtain the product. The foam material has the advantages of good rebound resilience, uniform cell size, low foam material density, good foam effect and the like; besides, aiming at the characteristics of low melt viscosity and melt strength and difficult foam of the polyamide elastomer, a melt viscosity regulator is introduced to improve melt viscosity and strength to facilitate foaming, and the foam material is suitable for popularization and application. Furthermore, chemical and physical foaming methods are used, gas evolution is large, and controllability is high.

The invention discloses a PP foaming composite additive, which comprises the following raw materials by weight: 10-30 parts of LLDPE, 10-30 parts of EPDM, 80-40 parts of POE, 3-6 parts of foaming agent, 0.2-1.0 part of cross-linking agent, 1-2 parts of TMPTMA, 0.2-1.0 part of nano zinc oxide; PP enables a rapid degradation while crosslinking foaming, the TMPTMA is taken as a crosslinking auxiliary agent which effectively increases the crosslinking speed, meanwhile, a reactivity reaction is generated between the crosslinking and degrading of PP, and the crosslinking speed is greater than degradation speed. The speed for decreasing the PP melt-strength is alleviated which is beneficial to ideal foaming of PP, in addition, bubble strength and uniformity can be increased by adding nano zinc oxide, and the reaction process can be accelerated, the crosslinking temperature of the cross-linking agent can be reduced, the heat transfer and the crosslinking degree can be increased, the composite additive is benefit for harmless degradation, recovery and treatment of waste PP foaming plastics.

The invention discloses a dry powder gasification furnace which comprises a furnace body, a top nozzle and a side nozzle, wherein the furnace body is internally provided with a vaporizing chamber; the top nozzle is arranged at the top of the furnace body, and is used for injecting pulverized coal, oxygen, steam and fuel gas into the vaporizing chamber from the top of the vaporizing chamber; the top nozzle is internally provided with an ignition rod; and the side nozzle is arranged at the side of the furnace body, and is used for injecting pulverized coal, oxygen and steam into the vaporizing chamber from the side of the vaporizing chamber. According to the dry powder gasification furnace, the carbon conversion rate is higher than 99%, and the decomposition rate of water vapor is higher than 80%; therefore, the dry powder gasification furnace has remarkable gasification efficiency and can be widely applied to the field of the existing coal gasification technology.

A motor includes a frame defining an internal volume in which are housed a rotor and a stator; at least one cooling circuit, which includes a primary inlet and a primary outlet in fluidic communication with the outside of the frame; at least one cooling device outside the frame, which includes a secondary air inlet and a secondary air outlet, and a conduit; at least one secondary cooling circuit, separate from the primary circuit, crossing the rotor and in fluidic communication with the secondary inlet and the secondary outlet of the cooling device. The secondary cooling circuit is crossed by a channel of the primary cooling circuit supplying the stator with the gas fluid from the outside of the frame.

EVA/EPDM/CPE/MMT nano-composite closed-cell micro-cellular foam rubber-plastic combined inner tube belongs to the scientific and technological field of nano-composite foam rubber and plastic products. The method is to mix and shear the EVA nanocomposite base material and other filler additives according to the weight of the preferred formula to make EVA blended foam material, put it into the molding machine, heat it at high temperature for foaming, and then you can get high-performance Molecular EVA nano-composite rubber and plastic products. The invention solves the versatility of the combined tire inner tubes of various vehicles, airplanes and bicycles, and obtains a substantive breakthrough in new material products that are not afraid of being punctured and not inflated, high in quality and low in price, can be recycled and utilized.

The invention provides a monocomponent foaming agent and a preparation method thereof. The monocomponent foaming agent is prepared from the following raw materials in parts by weight: 20 to 30 parts of isocyano polyacid ester, 25 to 30 parts of polyester polyol, 3 to 8 parts of polyether polyol, 30 to 40 parts of methylene dichloride, 0.5 to 2 parts of catalyst and 3 to 5 parts of fireproof and high-temperature resistant filling agent. The preparation method comprises the following steps: adding the polyether polyol into a vessel and dehydrating in the vacuum environment; sequentially adding polyester polyol, isocyano polyacid ester and the catalyst and stirring evenly; adding the fireproof and high-temperature resistant filling agent and stirring at a high speed; adding methylene dichloride; and then standing for 24 hours, thereby obtaining the monocomponent foaming agent. The monocomponent foaming agent has the beneficial effects of overcoming the flammable and explosive defects of the traditional foaming agent and being safer and more convenient to store and use. The monocomponent foaming agent has the characteristics of being large in gas generation volume, small in residue volume, high in reaction speed and uniform in gas generation. In addition, the monocomponent foaming agent is simple in production process, low in cost, safe and environmental-friendly and cannot generate toxic gas.

The invention discloses a 3DP sand mold casting process suitable for a ZL205A aluminum alloy complex thin-wall component, and belongs to the technical field of 3DP sand mold casting processes. The 3DP sand mold casting process comprises the steps that firstly, a pouring system of a casting is designed through three-dimensional drawing software, a three-dimensional structure of a casting mold is obtained, and 3D printing slicing data of the casting mold are obtained; then according to the slicing data, silica sand with the mesh number of 70-140 is used, furan resin serves as a binder, p-toluene sulfuric acid serves as a catalyst, and 3DP sand mold printing is carried out through a 3D printer; printing parameters are set, wherein the thickness of a printing layer is 0.28 mm, and the resin content is 1.5 wt.%; then sand cleaning, drying and mold assembling are carried out on a 3DP sand mold, the inner wall of the 3DP sand mold is coated with a layer of water-based zircon powder coating, drying is carried out 2.5-3 hours at the temperature of 120-130 DEG C, and furnace cooling is carried out; finally, a ZL205A alloy is smelted, the temperature is reduced to 725 +/-5 DEG C, and casting is carried out; and after the casting is solidified, cleaning is carried out to obtain the casting. According to the process, through the reasonable 3DP sand mold printing process and the casting process, the casting defects are reduced and the casting quality is improved through the sand mold preparation process and the casting process.

Provided is a lithium ion secondary battery which has a low internal resistance in a low-SOC region and a sufficiently large amount of gas generated during overcharge. The lithium ion secondary battery disclosed herein includes an electrode body having a positive electrode and a negative electrode, and a nonaqueous electrolytic solution. The lithium ion secondary battery further includes a pressure-type safety mechanism. The nonaqueous electrolytic solution includes a gas generating agent. The positive electrode has a positive electrode active material layer including a positive electrode active material. The positive electrode active material includes a lithium transition metal composite oxide represented by LiNi_aCo_bMn_cO₂ wherein a, b and c satisfy the following conditions: 0.35≦a≦0.45, 0.15≦b≦0.25, 0.35≦c≦0.45, and a+b+c=1, and a lithium transition metal composite oxide represented by LiNi_xCo_yMn_zO₂ wherein x, y and z satisfy the following conditions: 0.35≦x≦0.45, 0.45≦y≦0.55, 0.05≦z≦0.15, and x+y+z=1, and the mass ratio of the oxides is 60:40 to 85:15.

The invention discloses wood fireproof glue, which is prepared by the following steps: stirring and heating magnesium chloride, polyvinyl alcohol, magnesium sulfate and water in a reaction vessel, reacting to generate a fireproof glue intermediate material, adding an auxiliary agent into the intermediate material while stirring to prepare the wood fireproof glue. The invention also discloses a fireproof plate prepared from the wood fireproof glue and a manufacturing process thereof. The fireproof plate comprises a fireproof plate sandwich layer composed of multiple solid wood blocks which aresuccessively distributed from left to right. Upper and lower sides of the fireproof plate sandwich layer are respectively provided with a fireproof wood chip layer which is formed by crisscrossed lamination of multiple wood chips according to the wood grain. Between the fireproof wood chip layer and the fireproof plate sandwich layer, between two adjacent solid wood blocks and between two adjacentwood chips is coated with the wood fireproof glue. The fireproof plate is prepared by steps of wood turning, final trimming, coating with the wood fireproof glue, cold pressing, drying, sanding and hot pressing.

The invention provides a B06-grade autoclaved sand aerated concrete block prepared by adding saponin air entraining agents. The autoclaved aerated concrete block is prepared by using cement, lime and sand as main raw materials, doping gas generating agents, regulating agents and air entraining agents, and carrying out hydration reaction, mold forming by pouring, blank forming by procuring, forming by cutting, autoclaved curing and out-kettle processing. The dry density, compressive strength, mean pore diameter and percent of pass of the product are respectively less than 596kg/m<3>, more than 5.12MPa, less than 0.45mm and more than 97%. By adding a small quantity of saponin concrete air entraining agents, the ratio of water to material, unit aluminium powder gas evolution and pouring stability in the production process and the volume, strength and quality of the product can be obviously increased. The block is novel in conception, rich in raw materials, simple in process and low in cost, is convenient to implement and has greater generalization performance. The block is an environment-friendly and energy-saving wall material and can be applied to processing and construction of non-load-bearing walls, wallboards and roofing boards of buildings.

The invention discloses an alloy guide plate treated with precoated sand. The alloy guide plate treated with the precoated sand comprises an alloy plate body. The upper surface of the alloy plate body is composed of a horizontal plane and a slope, and the end, away from the plane, of the slope is lower than the plane. At least one inner groove corresponding to a membrane wall pipe in external diameter is formed in one side of the horizontal plane and faces the membrane wall. First guide grooves are formed in the inner circular surface, facing the membrane wall, of each inner groove. The slope is provided with second guide grooves. A precoated sand layer is arranged on the surface of the alloy plate body. The optimal treatment is conducted on the surface of the alloy guide plate through a precoated sand technique, so that the alloy guide plate has the characteristics of abrasion resistance, corrosion resistance, high-temperature resistance, adhesion resistance and the like, deposition of stains like coal ash on the surface of the alloy guide plate is reduced advantageously, and the service life is prolonged.