164 results about "Combustibility" patented technology

The invention relates to the technical field of refrigeration air conditioners, in particular to an efficient environment-friendly low-GWP air conditioner refrigerant formula and a preparation method thereof. The technical problem that an existing low-GWP refrigerant is high in flammability is solved. According to the refrigerant formula prepared by the invention, a high-energy-efficiency natural working medium and an ultralow-GWP fourth-generation refrigerant are taken as main components, a small amount of phosphorus-nitrogen hybrid compound is added as a flame-retardant additive, and the main components are mixed under the conditions of low temperature and high pressure. The flame-retardant additive adopted by the invention has excellent flame retardance, and can capture free radicals and release inert gas to inhibit combustion chain reaction during combustion. Nanoscale dispersion of the additive is realized through a low-temperature ultrasonic-assisted microjet homogenization technology, and the stability of the components is ensured by utilizing online monitoring. According to the refrigerant prepared by the invention, the combustibility is greatly reduced while the refrigeration performance is ensured, and both low GWP and low combustibility are realized.

The application provides a liquid nitrogen washing tail gas resource utilization system and method, and belongs to the technical field of tail gas treatment and energy recovery. The application uses a heat exchanger (1) to heat exchange the liquid nitrogen washing tail gas, so that the liquid nitrogen washing tail gas is combusted at a suitable working temperature of a first catalyst (3). In the application, the first catalytic combustion tower (2) is communicated with a constant temperature device, so that the temperature of the first catalytic combustion tower (2) is stably kept at 250-320 DEG C, the safety hidden danger caused by violent reaction is eliminated, and the catalyst cost is significantly reduced. Meanwhile, the steam generated after the constant temperature device is cooled can be used for enterprise heating and heating, and economic benefits are created. The application uses a second catalytic combustion tower (4) to fully catalytically oxidize the combustible gas in the first flue gas, and the generated second flue gas is partly used for heat exchange of the heat exchanger (1), and the gas after heat exchange and the other part of the second flue gas are used for heat supply of a coal mill (6), so that the heat is fully recycled and utilized.

The present invention relates to particular combustors, and e.g., to a combustor comprising a central primary fuel lance, a pilot fuel conduit, a primary oxidant conduit, a secondary oxidant conduit, and optionally a secondary fuel conduit, which are arranged in a particular and advantageous manner so as to surround each other at least in their downstream sections. The invention also relates to a furnace comprising the burner and a method of operating the burner. The burner according to the invention provides, in particular, a particularly advantageous way that comprises a pilot burner as part of the main burner in order to ignite a liquid fuel flame in a cold furnace. If desired, the pilot flame may help extend the flammability limit or operating range of the liquid fuel burner.

This invention provides a method and system for producing vinyl acetate. [Solution] A method and system for producing vinyl acetate can use a combustion limit (FL) formula with improved efficiency at one or more locations in the vinyl acetate production process. In this invention, FL can be used in one or more of the four parts of the vinyl acetate production process: the reactor, the inter-process heat exchanger, the carbon dioxide removal system, and the ethylene recovery system. Such FL is a function of the operating state and includes at least one interaction term that represents the interrelationship of two or more operating states (e.g., temperature, pressure, and component concentration) with respect to FL.

The application discloses a construction method for isolating combustible gas risk in a pipeline and a structure thereof, and comprises the following steps: screening a blocked pipeline with hidden safety hazards on both sides of a construction position; customizing a flange blockage device according to the specification of the blocked pipeline at the construction position; sealing the pipeline on both sides of the construction position by the blockage device; reforming the pipeline passing through the construction position into a detection gas pipeline with safety gas; providing an inlet of safety gas at one end of the detection gas pipeline and connecting a gas discharge port of the pipeline at the other end for discharging the safety gas; continuously injecting the safety gas into the detection gas pipeline and keeping the gas in the detection gas pipeline in a slightly positive pressure state, meanwhile, opening a vent valve of the gas discharge port and detecting the safety gas concentration in real time at the position; judging the safety of the construction position according to the concentration standard value of the safety gas. In the case that there is no internal leakage of the valve or there is internal leakage of the valve, the safety hidden danger caused by production suspension, maintenance and modification can be solved by the isolation method.

An oxygen isolation device for preventing combustible rock and soil from spontaneously combusting, and a use method. At least two gas delivery hoses are provided on the upper surface of a combustible rock and soil accumulation body, the gas delivery hoses are spaced apart by a certain distance, and a plurality of through grooves are provided on the outer surface of each gas delivery hose, with the through grooves being distributed in the axial direction of the gas delivery hose. By means of providing the gas delivery hoses, a gas treatment device and a gas detection box, an inert gas enters the interior of the combustible rock and soil via the gas delivery hoses, and at the same time, the gas treatment device extracts gas from the interior of the combustible rock and soil, such that the inert gas quickly enters the interior of the combustible rock and soil, and the air is quickly expelled by the inert gas from the interior of the combustible rock and soil, thereby isolating the combustible rock and soil from the air and preventing the combustible rock and soil from spontaneously combusting.

The invention discloses a compound liquid fertilizer for improving combustibility of cigar tobacco leaves as well as a preparation method and application of the compound liquid fertilizer. The compound liquid fertilizer comprises the following components by concentration: 11-12 g / L of zinc, 1.3-1.6 g / L of boron, 0.6-0.8 g / L of molybdenum, 3-4 g / L of brown algae essence, 3-4 g / L of alfalfa extract paste and 78-83 g / L of sugar alcohol chelated magnesium (based on magnesium). The high-efficiency compound liquid fertilizer is constructed by taking sugar alcohol chelated magnesium as a core and compounding trace elements such as zinc, boron and molybdenum as well as the brown algae essence and the alfalfa extract, the magnesium element can be stably released, the interference of side-effect ions is avoided, meanwhile, the potassium-chlorine ratio of tobacco leaves, carbon and nitrogen metabolism and soil micro-ecology are synergistically regulated and controlled, and the yield of the tobacco leaves is increased. Combustion components and physical structures of the tobacco leaves are optimized from the source, and finally the combustion quality of the cigar tobacco leaves is remarkably improved.

Whether the co-firing ratio is low or high, interlock control is appropriately implemented when the co-firing ratio fluctuates due to the influence of external disturbances. [Solution] This application relates to a gas turbine control device for controlling a gas turbine equipped with a fuel supply system that supplies a first mixed fuel of a first fuel and a second fuel to a first fuel nozzle. The gas turbine control device determines whether or not interlock control of the gas turbine is necessary by comparing the deviation between a target mixing ratio, which is a target value for the mixing ratio of the second fuel in the first mixed fuel, and the mixing ratio of the second fuel in the first mixed fuel, with a reference value. The reference value for determining whether interlock control is necessary differs between the first mixing ratio region, where the combustibility index of the first mixed fuel decreases with increasing mixing ratio, and the second mixing ratio region, where the combustibility index of the first mixed fuel increases with increasing mixing ratio.

The utility model discloses a furnace body structure and a magnesium alloy furnace mouth high-temperature sealing structure thereof, and relates to the technical field of magnesium alloy furnaces, and the magnesium alloy furnace mouth high-temperature sealing structure comprises a first isolation piece, a second isolation piece and a third isolation piece, the second isolation piece is used for being arranged along the inner periphery of the top of a furnace body panel of the magnesium alloy furnace in an attached mode; wherein the contact surface of the first isolation piece and the second isolation piece is a conical surface, and the first isolation piece and the second isolation piece are heat insulation material pieces without flammability. The device can solve the problems of fire leakage of a furnace mouth, failure of a steel structure, shutdown maintenance of the magnesium alloy furnace and the like caused by direct contact between high-temperature open fire in the magnesium alloy furnace and a furnace body panel made of a metal material.

The invention discloses a power fuel generation method for a sea-air amphibious environment, which comprises the following steps: generating fluidized metal fuel by utilizing the properties that methanol and aluminum do not react at a low temperature and methanol and aluminum particle surfaces react at a high temperature; the fluidized metal fuel is composed of methanol and aluminum particles at a low temperature or aluminum particles coated with methanol and aluminum methoxide films at a high temperature. The underwater power fuel is generated by using the violent hydrolysis property of aluminum methoxide and seawater and the self-ignition reaction property of metal aluminum and seawater; high-temperature water vapor is generated through combustion reaction of methanol and air; the generated high-temperature water vapor reacts with aluminum methoxide / aluminum to generate combustible gases such as hydrogen, and the combustible gases and air are combusted and react to generate low-altitude power fuel. The double roles of methanol are ingeniously utilized, and efficient, reliable and self-ignition power fuel on-demand generation and supply of a single fuel system in two different environments of underwater and low altitude are achieved.

This invention provides a method for producing reduced ilmenite, belonging to the field of solid-state reduced ilmenite technology. This invention uses a petroleum coke pot furnace to produce reduced ilmenite, utilizing the heat of the pot furnace to reduce carbon-containing titanium ore pellets. Simultaneously, the combustible gases generated by the titanium ore pellets continue to heat the flue, allowing the reduction process to continue without external heat. This method utilizes the low-cost, self-heating mechanism of a pot furnace for producing calcined coke to produce reduced ilmenite, reduced iron, or other carbothermally reducible metal oxides. The pelletizing formula and method used are significantly different from the traditional rotary kiln used for producing reduced ilmenite, facilitating operation within the pot furnace, increasing permeability, and enhancing the reduction effect. This invention not only reduces production costs but also improves the production method of reduced ilmenite.

The invention relates to the technical field of exhaust systems, in particular to a heat pump anti-explosion laboratory exhaust system which comprises an air source, a pressure reducing valve, an electromagnetic valve, a dilution exhaust hole and an air outlet exhaust hole, the air outlet end of the air source is connected with a main exhaust pipeline and a branch exhaust pipeline through the pressure reducing valve and the electromagnetic valve, and the main exhaust pipeline extends into a laboratory; the branch exhaust pipeline extends into the air inlet side of the exhaust fan, the dilution exhaust hole is formed in the main exhaust pipeline, and the air outlet exhaust hole is formed in the branch exhaust pipeline. The non-combustion-supporting gas source is arranged in the exhaust system, and gas injection operation is performed in the laboratory, so that the exhaust system can inject the non-combustion-supporting gas into the laboratory to dilute the content of the combustible gas in the laboratory while exhausting the combustible gas, and meanwhile, the non-combustion-supporting gas is guided into the air inlet side of the exhaust fan, so that the content of the combustible gas in the laboratory is reduced. Therefore, the concentration of the combustible gas discharged out of the room is sufficiently diluted, and the safety is further improved.

A burner includes a plate having an upstream end surface and a downstream end surface in an axial direction; at least one mixing flow path formed in the plate so as to extend in the axial direction between the upstream end surface and the downstream end surface and configured to supply air to the inside; a first cavity formed in the inside of the plate and configured to be supplied with a first fuel; a second cavity formed in the inside of the plate and configured to be supplied with a second fuel having a higher combustibility than the first fuel; at least one first injection port for injecting the first fuel from the first cavity into the inside of the at least one mixing flow path; and at least one second injection port for injecting the second fuel from the second cavity into the inside of the at least one mixing flow path, the second cavity being located at a position more downstream than the first cavity in the axial direction.

The invention relates to the field of quality improvement and modification of lignite, in particular to a method for modifying and drying lignite by adopting biomass pyrolysis gas. The method comprises the following steps: carrying out heat treatment on lignite in an inert atmosphere to obtain dried lignite; biomass is pyrolyzed, obtained pyrolysis gas and the dried lignite are subjected to heat and mass transfer, and modified lignite is obtained. According to the invention, tar in the biomass tail gas and a cracking product thereof form a water-blocking layer or a passivated hydrophilic group on the surface of lignite particles, and meanwhile, an aromatic hydrocarbon component can replace water in the lignite, so that the effect of drying and modifying the high-water-content lignite is achieved. According to the method, moisture removal, flammable component increment, hydrophilicity weakening and reactivity strengthening of the lignite can be synchronously achieved, the fuel quality of the dried lignite is further improved by improving the energy density and combustion reactivity of the dried lignite, and recycling of biomass tail gas waste heat is achieved.

The utility model relates to the technical field of excrement treatment, in particular to an excrement ammonia gas treatment technology. Water is mostly contained in the black water tank, part of water resources are recycled from the black water tank, and waste of the water resources can be reduced. An ammonia oxidation starting and maintaining system based on electromagnetic induction comprises a black water tank and further comprises an oxidation furnace. The oxidizing furnace comprises a furnace body; a stirring impeller is arranged at the bottom of the furnace body and is connected with a driving motor; an electromagnetic induction coil is arranged outside the furnace body and is connected with an electromagnetic heater driving circuit; the oxidation furnace is provided with a material input port, an oxygen input port and an overflow discharge port; the black water tank pipeline is communicated with the material input port and the overflow discharge port is communicated with the black water tank. The device has the beneficial effects that the innocent treatment efficiency of the excrement is high, and heat generated by combustion of combustible gas in the excrement is used for ammonia oxidation, so that the consumption of electric energy can be reduced, and the treatment and recovery cost is saved.

The application discloses a kind of for building outer wall thermal insulation material non-combustibility detector, including building material non-combustibility test furnace, building material non-combustibility test furnace both sides are provided with support rod A and support rod B, support rod A and support rod B between being provided with cross arm, cross arm is provided with derrick, derrick is provided with hook device, hook device is provided with cage, lifting mechanism is provided on support rod A, one end of cross arm is arranged on lifting mechanism, the other end of cross arm is arranged on support rod B, cross arm is lifted to the position of rotation after realizing movement.The application can detect the non-combustibility of thermal insulation material, it is time-saving and labor-saving to operate, can improve the efficiency of thermal insulation material non-combustibility detection.

A lubricant oil (104), the use of a lubricant oil (104) as an additive, and a method of lubricating parts in an engine (101) are described herein. The lubricant oil (104) is characterized as having one or more components with each of the components having a minimum evaporation rate when experiencing conditions within a combustion cylinder (102) of the engine (101). The minimum evaporation rate is configured so that when at least a portion of the lubricant oil (104) evaporates in combustion cylinder (102) and locally mixes with the air fuel mixture around it, the concentration of the combustible components in that mixture is greater than the net upper flammability limit of the particular components of the combustible mixture. Thus, in some examples, when the pressure and / or temperature of the combustion cylinder (102) volume are increased, such as during a compression cycle, the probability of a portion of the lubricant oil (104) combusting or auto-igniting is preferably decreased.

The invention relates to a film material film processing device and method for a rotary kiln, the film material film processing device comprises a rotating shaft arranged in the center of the rotary kiln, a rotating shaft rotating speed adjusting mechanism and a plurality of film mechanisms vertically and fixedly arranged on the rotating shaft, the film mechanisms are rotationally arranged in the rotary kiln, and the rotating speed adjusting mechanism controls the rotating shaft to rotate; the adjusting rotation speed is related to the combustibility of the processed object; the solid waste and the hazardous waste in the furnace are pressed into a molten film state through the continuous rotary pushing and compacting effect of the film forming mechanism and are evenly distributed on the inner side wall face of the rotary kiln. By means of the material thinning mechanism, on one hand, the contact surface area of solid waste and hazardous waste and the wall face of the rotary kiln is increased, the heat exchange effect of the solid waste and hazardous waste and the rotary kiln is enhanced, and therefore the pyrolysis effect and combustion efficiency of the solid waste and hazardous waste are improved; and on the other hand, the fragmentation degree of macromolecular structures of solid waste and hazardous waste subjected to film treatment is more thorough, and pyrolysis is more thorough, so that the operation energy consumption of the secondary combustion chamber can be further reduced, and the overall operation efficiency of the system and the steam output quality are improved.

The invention relates to the technical field of vehicle heat management, and provides an integrated heat management system, which comprises a refrigerant closed loop, a condenser, an evaporator, a heat exchanger, a heat exchanger, a heat exchanger and a heat management system, and is characterized in that the refrigerant closed loop is used for providing a closed channel for circulating flow of refrigerants; the secondary refrigerant circulation loop is used for providing a channel for a secondary refrigerant to circularly flow, the secondary refrigerant can exchange heat with the refrigerant, and the secondary refrigerant circulation loop is connected with the condenser and the evaporator and used for receiving and transmitting heat released by the condenser and cold provided by the evaporator; according to the invention, the working medium with high flammability is limited in the closed loop, and the secondary refrigerant circulation loop receives and transmits cold and heat energy, so that the cold or heat of the refrigerant is safely and efficiently transmitted to heat-carrying fluid such as a secondary refrigerant solution, the combustible refrigerant is effectively prevented from entering a passenger compartment or a battery compartment, and the intrinsic safety of the system is improved.

The invention belongs to the technical field of combustible gas catalysis, and particularly relates to a combustible waste gas catalytic conversion system based on self oxygen supply and application. The catalytic conversion system includes a housing; a flue gas inlet and a flue gas outlet are respectively formed in two ends of the shell; an oxygen supply device, a CO catalyst layer, a non-methane CH compound catalyst layer and an H2 and methane mixed catalyst layer are sequentially arranged in a shell of the catalytic conversion system in the direction from a flue gas inlet to a flue gas outlet. The oxygen supply device is used for generating oxygen, and an oxygen supply agent for generating the oxygen in the oxygen supply device comprises any one of NaClO3 or KClO3. The combustible waste gas catalytic conversion system is used for solving the problems that in the existing chemical production process, leaked flue gas treatment cost is high, efficiency is low, and the occupied area is large; the device has the advantages of high catalytic efficiency, compact structure, small occupied area, low production cost and maintenance cost and the like.

The invention relates to the technical field of industrial combustion control, and discloses a boiler ignition device self-adaptive regulation and control system fusing multi-source sensing data. Comprising a multi-source heterogeneous data acquisition and synchronization module, a flow field phase space reconstruction and feature extraction module, an electrode gap impedance spectroscopy inversion module, a flow-electric frequency domain resonance avoidance and parameter calculation module and a variable frequency pulse modulation and execution module. Analyzing the flow field stability and the turbulence dominant frequency by using a nonlinear dynamics algorithm, and inverting the flammability of the medium through sweep frequency detection; and determining a carrier frequency avoiding a turbulent resonance band through frequency domain orthogonal screening, and carrying out decoupling calculation on a duty ratio and a voltage gain adaptive to the current working condition. The ignition strategy can be adaptively adjusted according to the transient flow field structure and medium characteristics, arc extinguishing caused by flow field pulsation is effectively avoided, and the ignition stability and success rate under the complex working condition are remarkably improved.

This invention relates to the field of explosion-proof product testing technology, and particularly to a time-division multiplexing multi-component combustible gas concentration measuring device and method. The device includes at least three inlet pipes, at least three measuring pipes, and an oxygen concentration sensor. The at least three inlet pipes and at least three measuring pipes correspond to each other. The at least three measuring pipes include a first measuring pipe, a second measuring pipe, and a third measuring pipe. By opening the first, second, and third measuring pipes at different time periods, the oxygen concentration sensor is time-division multiplexed to obtain the oxygen concentration in the three measuring pipes. Based on the oxygen concentration in the three measuring pipes, the concentrations of the first and second combustible gases are calculated. This invention's measuring device and method, using only one oxygen concentration sensor, can measure the concentrations of oxygen, the first combustible gas, and the second combustible gas in a ternary gas mixture, reducing equipment costs and daily maintenance costs.

The embodiment of the utility model provides a part welding seam area heating device, and relates to the technical field of heating devices, the part welding seam area heating device comprises a gas bottle, a gas inlet pipe and a gas outlet pipe, the fire spraying structure comprises a supporting piece and at least two fire spraying heads arranged on the supporting piece, the gas bottle is communicated with the fire spraying heads so as to convey combustible gas to the fire spraying heads, the supporting piece is provided with a circulation pipeline, the circulation pipeline is used for conveying combustion-supporting gas to the fire spraying heads, and the fire spraying heads are used for igniting the combustible gas and the combustion-supporting gas; the driving assembly is used for driving the parts to move so that the weld joint areas of the parts can sequentially correspond to the fire-jet heads, and compared with manual movement of the fire-jet heads, the driving assembly can drive the parts to move at a constant speed, so that heat energy jetted by the at least two fire-jet heads continuously and uniformly acts on the weld joint areas of the parts, operation is convenient, flame distribution is optimized, and the welding efficiency is improved. The situation that local heating is overdue or insufficient is effectively avoided, and the welding quality is improved.

In a self-ignition preventing device, increase in cost of a member, maintenance cost is suppressed, and self-ignition of a combustible gas is appropriately suppressed. The self-ignition preventing device is provided with: a pipe which is capable of filling a combustible gas and is capable of communicating with an object region; an enlarged pipe which is provided between the pipe and the object region and has an inner diameter larger than an inner diameter of the pipe; and an ejection portion which ejects a non-combustible gas from an outer peripheral portion of the enlarged pipe toward a central portion side.

The application provides a kind of air distribution system and method of two combustion chamber combustion, two combustion chamber combustion air distribution system includes two combustion chamber body and be located on two combustion chamber body on air distribution unit and combustor, air distribution unit includes air mixer and air distribution assembly, air distribution assembly includes multiple air distribution branch pipes, air mixer and air distribution branch pipe are connected with first air distribution fan and second air distribution fan respectively, first air distribution fan and second air distribution fan can respectively pass through air mixer and air distribution branch pipe with combustion-supporting air into two combustion chamber body, and mix with flue gas in two combustion chamber body.Relative to prior art, in the two combustion chamber combustion air distribution system of the application, air mixer includes air collecting box and multiple sleeves on air collecting box, multiple sleeves are connected with air distribution pipe respectively, air distribution pipe is located in the inside of two combustion chamber body, first air distribution fan is transported to two combustion chamber body with combustion-supporting air through sleeve and air distribution pipe, can be effectively mixed with flue gas, cooperate with combustion-supporting device, and combustible substance in flue gas can be fully combusted.

The invention discloses a cultivation method for improving combustibility and grey of cigars, which comprises the following steps: in the cultivation process, spraying different types of foliar fertilizers to tobacco plants at different growth stages, or accurately regulating and controlling the pH value of soil to a certain range before transplanting cigar seedlings, thereby improving the combustibility and grey of the cigars. The technical problems that in an existing cigar tobacco leaf cultivation technology, due to the fact that the proportion of key mineral elements in tobacco leaves is unbalanced, cigars are poor in combustion performance, cigarette ash is dark and not white after combustion, and the structure is loose and fragile are solved. In addition, the method is short in time consumption, low in cost, free of other by-products, easy to operate, energy-saving and environment-friendly, and the regulated soil pH value is still suitable for follow-up cigar planting. Therefore, the method has wide development potential.

[Problem] The present invention addresses the problem of providing an electrolyte solution for a secondary battery, which has safety characteristics (flame retardance) capable of addressing ignition risk and which enables the achievement of excellent battery characteristics. [Solution] It has been newly found that an electrolyte solution for a secondary battery, which is capable of forming a passivation film on the surface of an electrode and is capable of achieving both low combustibility and excellent battery characteristics can be achieved by using a solvent system that contains a cyclic phosphoric acid ester having a six-membered ring structure and low combustibility, the formation of a passivation film having been impossible by a conventional phosphoric acid ester solvent system.

This utility model discloses a field waste carbonization furnace with a gas circulation device, solving the problems of existing small carbonization furnaces not being able to effectively utilize the gas generated during the carbonization of agricultural waste and being unfavorable for exploring carbonization conditions for different agricultural wastes. The field waste carbonization furnace, by setting up a gas circulation device, allows the hot gas generated in the combustion chamber to not only conduct heat through the furnace wall to the field waste inside the carbonization chamber, but also through multiple heat circulation pipes, making the field waste in the carbonization chamber more evenly heated. The combustible gas generated in the carbonization chamber is purified by a dust removal and purification chamber, then transported to the combustion chamber for further combustion through the carbon circulation pipe, and then introduced into a spray chamber for cooling and purification before being discharged into the atmosphere. This effectively treats the gas generated in the carbonization chamber and makes full use of the combustible gas, reducing energy consumption. This application can be used for the carbonization treatment of agricultural waste such as rice straw, monk fruit vines, peanut vines, and sugarcane leaves.

The application relates to the technical field of high polymer materials, and discloses a flame-retardant PVC composite material which comprises the following raw materials in parts by weight: 90-100 parts of polyvinyl chloride resin, 2-5 parts of a compatilizer, 30-40 parts of a plasticizer, 1-2 parts of an antioxidant, 5-10 parts of aluminum hydroxide, 2-5 parts of calcium stearate, 4-6 parts of zinc stearate, 2-6 parts of ACR resin, 1-5 parts of a modified heat stabilizer and 6-10 parts of a modified flame retardant. In the application, the preparation of the modified flame retardant can inhibit the combustion of the system through multiple mechanisms, the heat transfer and the combustible gas release are inhibited, and the flame-retardant effect of the system is improved; the preparation of the modified heat stabilizer can inhibit the dehydrochlorination reaction of the PVC and block the free radical chain reaction, the thermal oxidative degradation of the system is delayed, the heat resistance of the system is improved, and the service life of the system is prolonged.