22results about How to "Reduce processing temperature" patented technology

The invention is applicable to the technical field of titanium alloy pipe processing, and particularly relates to a preparation method of a high-plasticity TA15 titanium alloy pipe, which comprises the following steps: step S1, selecting sponge titanium, pure metal and intermediate alloy, preparing according to standard components of TA15 titanium alloy to obtain a prepared raw material, and smelting the prepared raw material for three times by adopting a vacuum consumable smelting furnace to obtain a high-plasticity TA15 titanium alloy pipe; and the TA15 titanium alloy cast ingot with the diameter being 600 mm is obtained. According to the method, the mechanical property and plasticity of the titanium alloy pipe are remarkably improved by accurately controlling the temperature and deformation of each machining step. And three-time upsetting and three-time drawing forging is carried out within the temperature range of T beta or above, coarse grains are effectively crushed, and grain structures are refined. And then, the metallographic structure of the wool rod is gradually optimized by accurately controlling the forging temperature and the deformation amount.

The invention discloses a microchannel heat exchanger with bottom surface secondary textures and a preparation method thereof.The microchannel heat exchanger comprises a microchannel substrate and a cover plate attached to the microchannel substrate, the microchannel substrate is provided with a plurality of microchannels, the bottom surfaces of the microchannels are provided with secondary texture structures, and the bottom surfaces of the microchannels are provided with secondary textures. The effects of disturbing flow, damaging a fluid boundary layer and increasing the heat exchange area are achieved, and the heat transfer performance is enhanced. The microchannel substrate is made of a third-generation semiconductor material, has excellent thermal conductivity and high temperature resistance, and can stably work in a high-temperature and high-pressure environment. When the microchannel heat exchanger is manufactured, the textured grinding wheel with the multiple abrasive particles distributed on the periphery moves on the to-be-machined face in the extending direction of the to-be-machined microchannels, the multiple parallel microchannels with the bottom face secondary texture structures are machined through grinding of the textured grinding wheel, the manufacturing process is simple, cost is low, and the microchannel heat exchanger is suitable for large-scale popularization and application. And integrated, high-efficiency and low-cost preparation and forming of the third-generation semiconductor material microchannel and the inner wall surface enhanced heat transfer microstructure can be realized.

The invention provides a low-odor ratproof extrusion-grade polypropylene material, a preparation method and an electrical material, and belongs to the field of polypropylene materials. The polypropylene is used as a main body, the flexibilizer is used for modifying the polypropylene, the used flexibilizer is linear low-density polyethylene and polyolefin elastomer, the melt strength of the flexibilizer is higher, the flexibilizer and the polypropylene are all olefins and have good compatibility, the price of the low-density polyethylene is lower, and the price of the polyolefin elastomer is higher, so that the low-density polyethylene, the polyolefin elastomer and the low-density polyethylene are combined, and the polypropylene is modified. According to the low-odor rat-proof extrusion-grade polypropylene material, the impact resistance of the polypropylene material is enhanced while the production cost is guaranteed, meanwhile, in order to improve the flame retardance of the low-odor rat-proof extrusion-grade polypropylene material, the flame retardant and the mineral substances are added, and the rat-proof agent is further added to prevent the material from being bitten by rats and insects and causing damage to the material; in addition, a special thread element is used in the double-screw extruder, so that the feeding amount is increased, the shearing heat is reduced, the melt temperature is reduced, and the odor grade of the material is reduced.

The invention discloses an optimization process for preparing hydrolysis-resistant PET (polyethylene terephthalate) master batch. The optimization process comprises the following steps: S1, pretreating raw materials; s2, low-temperature pre-dispersion: adding the dried raw materials weighed according to the formula proportion into a high-speed mixer, so that the anti-hydrolysis agent and the auxiliary agent are uniformly attached to the surface of the PET base material to form a premix; s3, mild extrusion granulation: melting and mixing the premix through a twin-screw extruder, and extruding the premix into filaments through a die head; s4, the filaments are rapidly cooled and shaped through a cooling water tank, and secondary cross-linking is avoided; s5, pelletizing by adopting a pelletizer to obtain primary master batches; s6, the primary master batch is subjected to vacuum drying, surface moisture is removed, and the anti-hydrolysis PET master batch is obtained.The thermal degradation of a PET base material and the advanced reaction of an anti-hydrolysis agent are reduced, the intrinsic viscosity of the master batch is stable, and the anti-hydrolysis efficiency is improved.

This invention relates to the field of shape memory material preparation technology, specifically to a bio-based shape memory Eucommia ulmoides gum composite material and its preparation method. All components of the composite material are of entirely bio-based origin, using natural Eucommia ulmoides gum as the matrix. Nano-hybrid seed crystals composed of cellulose nanocrystals and carbon quantum dots are introduced. The cellulose nanocrystals act as nucleating agents, guiding and accelerating the cooling crystallization of the Eucommia ulmoides gum, while the carbon quantum dots form the shell, improving heat transfer efficiency. In the preparation process, this application uses triacylglycerol lipase as a biocatalyst, which can initiate an in-situ esterification reaction between the filler and the matrix at a low temperature of 65-75℃. This not only reduces energy consumption but also avoids the thermal degradation and damage to the Eucommia ulmoides gum macromolecular chains caused by high-temperature strong shear, achieving high performance and batch-to-batch stability of the material.

The application belongs to the field of engineering plastics, and particularly relates to long-chain polyamide resin with easy processing and high tensile property, and a preparation method and application thereof. The long-chain polyamide resin comprises the following raw material components: component a: aliphatic carboxylic acid compound component; component b: polyamine compound component; and component c: a compound with a structure shown in the following formula (1), wherein n and m can be any number between 1 and 10. The long-chain polyamide resin of the application introduces structural diacid with an asymmetric benzene ring structure, utilizes the asymmetric structure to reduce the crystallinity of the material, and introduces the benzene ring structure to improve the mechanical property of the polyamide material, so that the low processing temperature is realized from the polyamide material component itself, the energy consumption is reduced, and the mechanical property of the polyamide material is ensured. The problem that the processing temperature and mechanical property of the polyamide material and the processing energy consumption are difficult to be considered in the prior art is solved.

The present invention discloses a carbon point modified fluorescent fiber composite anti-counterfeiting film material, which is composed of the following raw materials in parts by weight: 0.1 to 1 part of carbon point modified fluorescent fiber; 50 to 99 parts of thermoplastic film-forming resin; 1 to 20 parts of compatibilizer; 1 to 5 parts of plasticizer. The present invention adopts a bottom-up method to prepare carbon points, and obtains carbon points by carbonizing small molecules or polymers under certain reaction conditions, and uses a wide range of raw materials; and uses a hydrothermal synthesis method to dissolve small molecule precursors in water or other solvents, which has the advantages of simple operation, low cost, high production efficiency, high product fluorescence quantum yield (QY), energy saving and environmental protection, and can meet the needs of industrial large-scale production; carbon points are used as fluorescent substances, and are combined with fiber substrates by chemical grafting, which avoids the aggregation state fluorescence quenching of carbon points.

The application provides a pultrusion process, product and application of a thermoplastic resin composite material, the pultrusion process comprising the following steps: preheating a prepreg tape and then feeding the prepreg tape into a pultrusion forming die for pultrusion forming, wherein the pultrusion forming die comprises a heating die and a cooling die, the heating die comprises a first heating zone and a second heating zone, the temperature of the second heating zone is less than the temperature of the first heating zone, the temperature at which the thermoplastic resin is decomposed by 10 wt% in an air atmosphere is denoted as T a ℃, the temperature of the first heating zone is denoted as T1℃, 95≤T a -T1≤150. The product obtained by the pultrusion forming process of the application has a good appearance, and the mechanical properties of the product are good. Different structural parts can be produced, and the application has the advantages of low processing temperature, low energy consumption, fast manufacturing speed, simple processing technology and continuous production. The continuous fiber reinforced thermoplastic resin prepreg tape is used as a base material to endow the product with recyclable processing performance.

The invention belongs to the technical field of materials, and particularly relates to a PET alloy material, a preparation method thereof and a floor base material. Compared with the prior art, the low-melting-point polyester polyol and the polyethylene glycol terephthalate resin base material are added into the reaction type chain extender system to react to form the body type polycondensation polymer alloy, so that the PET alloy material has lower processing temperature and wider processing temperature interval; the viscoelasticity change of the melt has a wide gradual change process due to the wider melting process, so that high shearing and high dispersion can be easily realized under the condition of lower processing temperature, especially in a high-filler system, and the performance requirements of an elastic floor base material can be met.

The invention relates to a processing method of a single crystal quartz material. And determining a to-be-processed area in which the single crystal quartz material is easy to generate bicrystal. The to-be-processed area on the single crystal quartz material is modified by using the modifier, so that the processing difficulty of the to-be-processed area is reduced. And processing the single crystal quartz material in the modified to-be-processed area by using a processor.

This invention belongs to the field of high-performance fiber composite materials technology, specifically relating to a method for preparing low-dielectric ramie fiber reinforced polycarbonate composite materials. First, ramie fibers with acrylate-type double bonds modified on their surface are prepared. Then, poly(styrene-isoprene) modified ramie fibers are prepared by copolymerizing the acrylate-type ramie fibers with styrene and isoprene. Next, polyphenylene ether and the poly(styrene-isoprene) modified ramie fibers are mixed evenly and added to a hopper. A polyphenylene ether / ramie fiber alloy is prepared using a twin-screw extruder. Finally, the polyphenylene ether / ramie fiber alloy is mixed evenly with polycarbonate and added to a hopper. A low-dielectric ramie fiber reinforced polycarbonate composite material is prepared using a twin-screw extruder. The molecular weight of the modified ramie fiber polymer is adjustable, as is the ratio of styrene to isoprene. The polystyrene segments effectively improve the compatibility between ramie fibers and polyphenylene ether, while the polyisoprene segments effectively enhance the toughness of the polyphenylene ether / ramie fiber alloy.

The invention discloses a flexible PET-based copolyester and a preparation method thereof, and relates to the technical field of high polymer materials, and the flexible PET-based copolyester is prepared from dibasic acid and dihydric alcohol through esterification and condensation polymerization; the binary acid comprises aliphatic flexible binary acid and terephthalic acid; the dihydric alcohol comprises ethylene glycol and flexible dihydric alcohol; the flexible dihydric alcohol comprises diethylene glycol and polyethylene glycol; the feeding amount of the diethylene glycol accounts for 1.0%-5.0% of the total molar weight of the dihydric alcohol; the feeding amount of the polyethylene glycol accounts for 3.0%-8.0% of the total molar weight of the dihydric alcohol. The copolyester has the advantages of high flexibility and low melting point.

The invention discloses an environment-friendly antioxidant terminator for PVC (polyvinyl chloride) and a preparation method of the environment-friendly antioxidant terminator, and belongs to the field of auxiliaries for PVC. Comprising one or more of hindered phenol antioxidants, auxiliary antioxidants, heat stabilizers, light stabilizers or terminators; b) a continuous phase comprising water containing an emulsifier, and / or a pH regulator, and / or an antifreeze agent; the oily inert substance is adhered to or wrapped on the surface of the dispersed phase and comprises one or more of a plasticizer, mineral oil, vegetable oil, alpha-styrene, organic tin and epoxidized soybean oil; wherein the melting point of the dispersed phase of which the surface is adhered or wrapped with the oily inert substance is controlled within 100 DEG C, and the density difference between the dispersed phase of which the surface is adhered or wrapped with the oily inert substance and the continuous phase is lower than 0.5 g / cm < 3 >. According to the environment-friendly antioxidant terminator, the storage stability of the environment-friendly antioxidant terminator for PVC can be improved, the preparation method is simple, and the production efficiency is improved.

The present invention belongs to the technical field of polymer materials, and specifically discloses a coating, a preparation method and application thereof, and a coated product. The raw material components of the coating of the present invention include, by weight: 50 to 200 parts of a hyperbranched bisphenol A epoxy resin composition and 1 to 100 parts of a curing agent composition; wherein the hyperbranched bisphenol A epoxy resin contains a bisphenol A group, a glycidylamine group, a glycidyl ether group, and an aliphatic ring group. The present invention uses a hyperbranched bisphenol A epoxy resin and selects and optimizes its components to achieve the effects of lowering the processing temperature of the epoxy resin coating, enhancing heat resistance, enhancing permeability, or enhancing rust resistance; the anti-corrosion coating and coated product prepared by the coating have the characteristics of high coating density, strong permeability, and high heat resistance, and can meet the application requirements in harsh environments such as high humidity and heat, acid and alkali corrosion, etc.

This invention relates to the field of polyurethane adhesive technology, specifically to a thermoplastic polyurethane resin for bonding water-repellent fabrics, its preparation method, and its application. It is prepared from the following raw materials: polyol, isocyanate, blocked isocyanate, chain extender, bonding accelerator, water-repellent synergist, and catalyst; the bonding accelerator is a compound of γ-aminopropyltriethoxysilane and tetrabutyl titanate; the water-repellent synergist is epoxy-terminated polydimethylsiloxane. This invention, through optimized formulation, solves the technical problems of insufficient bonding strength and poor resistance to damp heat aging of existing polyurethane resins for water-repellent fabrics, while also considering the synergistic effect of resin processing fluidity and water-repellent performance. It is suitable for composite processing of water-repellent fabrics in high-frequency use scenarios and has broad industrial application prospects.

The invention discloses a sawing machine, and relates to the technical field of cutting systems. The sawing machine comprises a workbench, a cutting mechanism, a translation mechanism, a base, a supporting plate, a front supporting mechanism, a rear supporting mechanism and a pressing mechanism. The cutting mechanism and the translation mechanism are both installed on the workbench. And the base is mounted on the translation mechanism. The height-adjustable front supporting mechanism supports the front side of the supporting plate. The height-adjustable rear supporting mechanism supports the rear side of the supporting plate. The supporting plate is provided with a station suitable for installing a workpiece. And the pressing mechanism is used for pressing the workpieces mounted on the stations. The translation mechanism drives the base to translate, so that the two ends of the workpiece move to the position below the cutting mechanism. The supporting plate is hinged to the base, the front side and the rear side of the supporting plate are supported by the front supporting mechanism and the rear supporting mechanism respectively, the hinged angle of the supporting plate and the base can be finely adjusted, the inclination of the supporting plate can be adjusted, the inclination of a workpiece can be locked, and the workpiece with the cutting face inclination meeting the requirement can be well machined.

The invention relates to the technical field of high polymer material assistants, in particular to a preparation method and application of an anti-reflection polypropylene nucleation assistant.The anti-reflection polypropylene nucleation assistant.The anti-reflection polypropylene nucleation assistant.The anti-reflection polypropylene nucleation assistant.The anti-reflection polypropylene nucleation assistant.The anti-reflection polypropylene nucleation assistant.The anti-reflection polypropylene nucleation assistant.The anti-reflection polypropylene nucleation assistant.The anti-reflection polypropylene nucleation assistant.The preparation method has the advantages that the anti-reflection polypropylene nucleation assistant.The anti-reflection the surface lipophilicity is improved, the compatibility with a polypropylene matrix and a sorbitol nucleating agent is remarkably improved, and the problem of poor dispersity is solved; the sorbitol nucleating agent provided by the invention and an inorganic nanoparticle compounded system generate a synergistic effect, and compared with a single nucleating agent, the sorbitol nucleating agent provided by the invention can reduce fog of a polypropylene product, improve impact strength and improve flexural modulus; the composite nucleating agent provided by the invention can stably play a role at 180-200 DEG C, compared with a traditional nucleating agent, the processing temperature is reduced, the processing energy consumption is reduced, and the composite nucleating agent has a wide application prospect.

The invention provides a pouring type asphalt modifier and a processing method thereof, and the method comprises the following steps: mixing high-softening-point natural asphalt and softening oil in proportion by a high-speed mixer, and mixing and extruding at high temperature by a screw extruder to form pouring type asphalt modifier solid particles; the softening temperature of the high-softening-point natural asphalt is 180 DEG C or above; the mass ratio of the high-softening-point natural asphalt to the softening oil is (70-85): (15-30); the rotating speed of the high-speed mixer is more than 60 revolutions per minute; the high-temperature mixing temperature of the screw extruder is 230 to 260 DEG C. The obtained pouring type asphalt modifier can reduce the processing temperature of pouring type asphalt and improve the dissolution and dispersion speed of natural asphalt at the same time. In addition, the solid particle modifier is formed through a new processing method, and dust pollution and the like in the processing process are reduced.

The invention discloses an application of a sorbitol diacetal composition and a preparation method of a polyolefin composition. The invention provides an application of a sorbitol diacetal composition in reducing the bubble content in polyolefin resin. The composition comprises a first compound, a second compound, a third compound and a fourth compound, the first compound, the second compound, the third compound and the fourth compound are different sorbitol compounds. The composition provided by the invention can effectively reduce the bubble content in the polyolefin composition.

The utility model belongs to the technical field of stamping processing, and particularly relates to an iron chip stamping part with a positioning bulge, which comprises a working table, a servo motor is arranged in an inner cavity of the working table, the top of the servo motor is fixedly connected with an output rod, the top of the output rod penetrates through the top of the working table, and the top of the output rod is fixedly connected with a stamping part; the servo motor drives the stamping part through the output rod, high-precision position adjustment can be achieved, the precision machining requirement of the positioning protrusion is met, stamping size errors are reduced, the cooling pipe is matched with the nozzle to accurately spray cooling liquid to a stamping area, the machining temperature is lowered in time, the situation that the material performance of an iron chip is changed due to high temperature is avoided, and stable work of the cooling pipe is guaranteed through the fixing part. Cooling liquid is stored in the liquid storage tank and continuously supplied to the cooling pipe through the water pump and the hose, cooling continuity is guaranteed, redundant cooling liquid on the top of the workbench is recycled to the liquid storage tank, the cooling liquid utilization rate is increased, and meanwhile the workbench top is kept clean and tidy.

The invention relates to the technical field of aluminum alloy equipment, in particular to a method and equipment for producing a heat-treatment-free AlSi10MnMg aluminum alloy for a vehicle. The problem that in the prior art, deep grooves are difficult to machine in the AlSi10MnMg aluminum alloy is solved, and the practicability of equipment is improved. The device structurally comprises a shell, a fixing frame is fixed in the shell, a mounting part is arranged on the fixing frame, a conveying structure used for enabling the mounting part to move relative to the fixing frame is arranged between the mounting part and the fixing frame, a milling cutter is rotationally connected to the mounting part, and a liquid guide groove is formed in the milling cutter. The design that in the prior art, a cooling liquid cleaning spray head is directly arranged beside a milling cutter spindle is replaced, cooling liquid can be sprayed outwards through a liquid guide groove in the milling cutter during deep groove machining, the machining temperature of the milling cutter during workpiece machining can be reduced, and it is guaranteed that when the milling cutter mills the deep groove, the machining efficiency is improved. And the cutting chips can be taken away from the milling cutter by the sprayed cooling liquid, so that the cutting chips are prevented from being adhered to the milling cutter to influence the cutting effect.

The invention relates to the technical field of flange machining equipment, in particular to a flange machining device. A flange machining device comprises a workbench, a clamping assembly, a turning tool assembly and a punching assembly are arranged on the workbench, and the clamping assembly is used for fixing a flange workpiece; the turning tool assembly is used for turning a flange workpiece, the punching assembly is used for forming holes in the flange workpiece, and the cooling and spraying assembly is further arranged on the workbench and used for cooling the machined flange workpiece in a spraying mode. The machining tool has the following effects that the clamping assembly can effectively fix a flange workpiece, the stability in the machining process is ensured, and efficient machining can be achieved through the linkage design of the turning tool assembly and the punching assembly. The cooling spraying assembly can effectively reduce the machining temperature, reduce the thermal deformation of the workpiece, guarantee the machining efficiency, and improve the surface quality of the flange workpiece and the machining environment.