40results about How to "Lower injection temperature" patented technology

The invention discloses an environmentally-friendly, high fire-resistant and high seawater-resistant polypropylene and belongs to the technical field of high polymer materials. The environmentally-friendly, high fire-resistant and high seawater-resistant polypropylene is characterized by comprising copolypropylene and / or homopolypropylene, one or more fire retardants, one or more ultraviolet absorbers, one or more light stabilizers, one or more antioxidants, one or more copper toxicity-resistant agents and one or more processing auxiliary agents according to a certain weight part ratio. The environmentally-friendly, high fire-resistant and high seawater-resistant polypropylene has excellent mechanical properties and effects of high fire resistance and high seawater resistance.

The invention provides a production technology of a modified injection-molding zipper. The production technology comprises steps as follows: A), copolyoxymethylene, polyurethane elastomers, a compatibilizer and auxiliaries are mixed, and a mixed material is obtained, wherein the polyurethane elastomers account for 3wt%-8wt% of copolyoxymethylene; B), after granulating extrusion, the mixed material is subjected to injection molding, modified injection-molding particles are obtained, and the temperature of the injection molding is 180-220 DEG C; C), the modified injection-molding particles are subjected to color matching, injection molding of zipper teeth is performed, the modified injection-molding zipper is obtained, and the temperature of the injection molding of the zipper teeth is 180-220 DEG C. The modified injection-molding zipper has higher hardness, better wear resistance, higher corrosion resistance and better impact resistance, and furthermore, single-tooth strength and single-tooth displacement strength of the zipper are higher, so that the problem that the zipper teeth are prone to embrittlement and falling in a use process is solved; besides, the temperature of the injection molding is lower, therefore, the phenomenon of high-temperature oxidation discoloration of toner in a molding process is eliminated, and energy consumption is low.

The invention discloses a special low-temperature injection-molded transparent PC (Polycarbonate) material for IMD (In-Mold Decoration) and a preparation method therefor and belongs to the technical field of macromolecular materials. The special low-temperature injection-molded transparent PC material for IMD is prepared from the following raw materials in parts by weight: 70-90 parts of PC resin,5-20 parts of phosphate compounds, 3-8 parts of phthalate, 1-3 parts of thermal stabilizer, 0.5-1 part of antioxidant, 0.5-1 part of lubricant and 0-3 parts of auxiliaries. According to the special low-temperature injection-molded transparent PC material for IMD and the preparation method therefor, through plasticization of the phosphate compounds and the phthalate, the injection molding temperature of the PC material is lowered, and meanwhile, the transparency and rigidity / toughness of the PC material are not affected, so that the prepared alloy material has the characteristics of low injection molding temperature, high material flow length ratio, high transparency, high thermal stability and the like. According to the special low-temperature injection-molded transparent PC material forIMD, the density is 1.18g / cm<3> to 1.20g / cm<3>, the flow length ratio is 150 to 250, the gap impact of a cantilever beam is higher than 50KJ / m<2>, and thus, the special low-temperature injection-molded transparent PC material is extremely applicable to low-temperature injection molding processes of IMD.

The invention relates to the technical field of injection molding and in particular relates to a modified resin and application thereof as well as a two-color injection molding part and a preparationmethod of the two-color injection molding part. A certain toughening effect can be achieved when the liquidity of the modified resin is improved, the thermal stability of the modified resin is improved, and the application range of the modified resin is widened. The modified resin provided by the embodiments of the invention comprises 80-90 weight parts of a resin matrix and 8-12 weight parts of aflow modifier, wherein the flow modifier refers to acrylic resin / montmorillonoid nano composite microspheres. The modified resin provided by the embodiment of the invention is used for preparing thetwo-color injection molding part.

The invention discloses a low-cost low-odor degradable natural-fiber-reinforced polycarbonate reclaimed material capable of achieving light weight and a preparation method thereof. The reclaimed material is prepared from the following raw materials in percentage by weight: 34-99 wt% of a polycarbonate reclaimed material, 1-50 wt% of natural fibers, 0.1-5 wt% of foaming agent masterbatch, and 0.01-1 wt% of an antioxidant. The polycarbonate reclaimed material, the antioxidant and the like are added from a main feeding port of a double-screw extruder, and the natural fibers and the foaming agentmasterbatch are added from a melting section in the middle of a screw to obtain the natural-fiber-reinforced polycarbonate reclaimed material. The natural-fiber-reinforced polycarbonate composite material is prepared into a low-cost, low-odor and degradable natural-fiber-reinforced polycarbonate product under a secondary mold opening condition or an under-injection condition by adopting an injection molding method. The disclosed material is endowed with the characteristics of low density, low odor, high performance and degradability while the problem of resource waste is solved, and a new wayis provided for lightweight and environment-friendly development of automobiles.

The invention relates to the technical field of polymer materials, in particular to a carbon fiber reinforced polycarbonate composite material used in IMR molding and its products. The composite material includes by weight parts: 100 parts of polycarbonate resin; 10-60 parts of carbon fiber; 5-30 parts of flame retardant; the flame retardant is two or more compound flame retardants . The product is a product produced by molding the carbon fiber reinforced polycarbonate composite material. The carbon fiber reinforced polycarbonate composite material and its products of the present invention can not only ensure the flame retardancy and fluidity of the composite material, but also reduce the injection molding temperature of the composite material, so that the composite material can be applied to IMR molding, and the application of IMR film In high-end ultra-thin products, it can also injection mold structural parts with beautiful appearance.

The invention provides a polylactic acid-polypropylene composite material, and a preparation method and application thereof. The polylactic acid-polypropylene composite material is prepared from the following components in parts by weight: 25 to 40 prats of polylactic acid, 60 to 70 parts of polypropylene and 5 to 10 parts of maleic anhydride. The polylactic acid-polypropylene composite material is low in injection molding temperature and has the advantages of environmental friendliness, environmental protection, low smell, stable size and the like.

The invention relates to the technical field of turbine engines, in particular to a hot end fuel and lubricating oil pipeline structure of a turbine engine, and aims to solve the problems that in theprior art, the heat efficiency of the engine cannot be better improved and a better cooling effect on a bearing cannot be achieved. The hot end fuel and lubricating oil pipeline structure comprises alubricating oil return cavity shell, a fuel oil preheating cavity shell, a fuel oil preheating cavity, a fuel oil inlet pipe, a lubricating oil return pipe and a lubricating oil inlet pipe, wherein the fuel oil inlet pipe, the lubricating oil return pipe and the lubricating oil inlet pipe are sequentially nested from outside to inside and are reserved with gaps among one another; one end of the fuel oil inlet pipe sequentially communicates with the fuel oil preheating cavity and a fuel oil supply pipe; one end of the lubricating oil return pipe communicates with the inside of the lubricating oil return cavity shell; and one end of the lubricating oil inlet pipe is positioned inside the lubricating oil return cavity shell and is opposite to the upper part of the bearing. According to the hot end fuel and lubricating oil pipeline structure, the fuel oil inlet pipe, the lubricating oil return pipe and the lubricating oil inlet pipe are sequentially nested from outside to inside, and the temperatures of the fluids in the three pipelines are sequentially reduced from outside to inside, so that the cooling effect on the bearing is improved and the heat efficiency of the engine is improved.

Disclosed is a dual nozzle cap for thermal spray coating to which both a thermal spray coating method and a kinetic spray coating method are applied. The dual nozzle cap includes a nozzle unit including inner and outer nozzles, a gun insertion hole, into which the front end of a spray gun is inserted, and a gas connection hole, into which a gas connector to supply the gas is inserted, formed through one surface of the nozzle unit. In a space between the inner and outer nozzles, a gas collection part to uniformly distribute the high-pressure subsidiary gas injected through the connection hole, a neck part to apply pressure to the high-pressure subsidiary gas to accelerate the subsidiary gas, and a gas spray hole to spray the subsidiary gas supplied from the neck part together with a material sprayed from the spray gun are sequentially formed.

The present invention provides a degradable disposable mouthpiece and a preparation method. The degradable disposable mouthpiece is prepared by a degradable polymer main ingredient of a degradable substrate and an enhancer. The injection molding process includes that: a feed inlet is of 150-165 DEG C, a compression section of 160-185 DEG C, a metering section of 165-175 DEG C, a nozzle is of 160-170 DEG C, the mold temperature is 20-30 DEG C, the injection pressure is 45-90 Mpa, the injection time is 38-41 seconds, the dwell time is 0 sec, and the screw speed is 180 rpm. The performances of the degradable disposable mouthpiece are in line with the requirements of medical apparatus and instruments. The degradable disposable mouthpiece can completely degrade by landfill in the natural environment after being used without burning to achieve low-carbon, energy-saving, and environmental protective purposes.

The present invention provides a degradable disposable oropharyngeal airway and a preparation method. The degradable disposable oropharyngeal airway is composed of a degradable polymer main ingredient of a degradable substrate and an enhancer. The injection molding process includes that: a feed inlet is of 145-165 DEG C, a compression section is of 155-170 DEG C, a metering section is of 160-175 DEG C, a nozzle is of 160-170 DEG C, the mold temperature is 15-30 DEG C, the injection pressure is 45-80 Mpa, the injection molding time is 41-45 seconds, the dwell time is 0 sec, and the screw speed is 180 rpm. The used degradable disposable oropharyngeal airway can completely degrade in the natural environment by landfill without burning to achieve low-carbon, energy-saving and environmental protective purposes.

The invention relates to a plastic injection process which comprises the following steps: (1) carrying out primary injection molding by adopting first soft rubber, wherein the hardness of the first soft rubber is 65-85 degrees; and (2) carrying out secondary injection molding by adopting secondary soft rubber, wherein the hardness of the secondary soft rubber is 65-75D. According to the plastic injection process, the two plastic injection processes both adopt the soft rubber (the first and second soft rubber); as the injection molding temperature and the injection molding pressure of the soft rubber are both lower than those of hard rubber, and in addition, the temperature and the pressure of the second soft rubber adopted by the secondary injection molding are low, the forming purpose can be reached, and thus the first soft rubber adopted by the primary injection molding cannot be burnt yellow or deform by extrusion.

The present invention provides a degradable material for an anoscope and a preparation method thereof. The degradable anoscope is composed of an outer cylinder and an inner core. The outer cylinder and the inner core are both composed of a degradable polymer ingredient of a degradable substrate, an enhancer and a lubricant. The injection molding process includes that: a feed inlet is of 150-165 DEG C, a compression section is of 155-165 DEG C, a metering section is of 160-175 DEG C, a nozzle is of 165-175 DEG C; the mold temperature is 20-35 DEG C; the injection pressure is 50-80 Mpa; the injection molding time is 36-39 seconds; the dwell time is 0 seconds; and the screw speed is 180 r / min. The degradable anoscope can completely replace the disposable anoscope made of polystyrene, modified polystyrene and other plastics. The waste anoscope cannot pollute the environment by burning, and can completely degrade in the natural environment by landfill to achieve purposes of low-carbon, environmental protection, and energy saving.

The present invention provides a degradable titanium clamping seat and a preparation method. The degradable titanium clamping seat is prepared by a degradable polymer main ingredient of a degradable substrate and an enhancer. The injection molding process includes that: a feed inlet is of 150-165 DEG C, a compression section is of 155-170 DEG C, a metering section is of 160-175 DEG C, a nozzle is of 160-175 DEG C, the mold temperature is 20-40 DEG C, the injection pressure is 45-90 Mpa, the injection time is 40-50 seconds, the dwell time is 0 sec, and the screw speed is 180 r / min. The obtained degradable titanium clamping seat after being used can completely degrade by landfill in the natural environment to achieve the purposes of low carbon, energy saving, and environmental protection.

The invention provides a degradable material used for a disposable umbilical cord clamp and a preparation method. The disposable umbilical cord clamp is prepared from a degradable high polymer main material and a reinforcing agent. An injection molding process adopted in the invention comprises that: a feed inlet is at a temperature of 150-165DEG C, a compression section is at a temperature of 155-165DEG C, a metering section is at a temperature of 160-170DEG C, and a nozzle is at a temperature of 165-175DEG C; a mold is at a temperature of 20-45DEG C; the injection pressure is 70Mpa at the first level, 80Mpa at the second level, and 55Mpa at the third level; the injection molding period is 41sec; the pressure-holding time is 0sec; and the screw rotation speed is 180 rpm / min. The obtained degradable disposable umbilical cord clamp has all performances in full compliance with the requirements of clinical use, needs no burning after use and is completely biodegradable in the natural environment by landfill, thus reaching the purposes of low carbon, energy saving, environmental protection and human health protection.

The present invention provides a degradable material for otoscope and a preparation method thereof. The degradable otoscope is composed of a degradable polymer main ingredient of a degradable substrate and an enhancer. The injection molding process includes that: a feed inlet is of 150-165 DEG C, a compression section is of 155-165 DEG C, a metering section is of 160-175 DEG C, a nozzle is of 165-175 DEG C; the mold temperature is 20-35 DEG C; the injection pressure is of 50-80 MPa; the injection time is 36-39 seconds; the dwell time is 0 sec; and the screw speed is 180 r / min. The degradable otoscope is up to the requirements of clinical use in performances, and can completely replace ABS plastic disposable otoscope. The waste otoscope cannot pollute the environment by burning, and can completely degrade in the natural environment by landfill to achieve purposes of low-carbon, environmental protection, and energy saving.

The present invention provides a degradable disposable tongue depressor and a preparation method. The degradable disposable tongue depressor is prepared by a degradable polymer main ingredient of a degradable substrate and an enhancer. The injection molding process includes that: a feed inlet is of 150-160 DEG C, a compression section is of 155-165 DEG C, a metering section is of 155-170 DEG, a nozzle is of 155-175 DEG C, the mold temperature is 20-45 DEG C, the injection pressure is 50-100 MPa, the injection time is 38-44 seconds, the dwell time is 0 sec, and the screw speed is 180 rpm. The used degradable disposable tongue depressor can completely degrade in the natural environment by landfill without burning and environmental pollution to achieve low-carbon, energy-saving and environmental protective purposes.

The invention relates to a motor winding component and an injection molding motor with the winding component. The component is a winding component formed by two times of plastic coating, and the winding component comprises a winding part, a low-pressure injection molding part and a high-pressure injection molding part; and the low-pressure injection molding part firstly carries out plastic coating molding on the winding part to form a low-pressure injection molding pre-forming assembly, and the low-pressure injection molding pre-forming assembly is subjected to plastic coating molding through the high-pressure injection molding part. Compared with the prior art, the invention has the advantages of being suitable for complex working conditions, high in product percent of pass, high in finished product reliability and the like.

The invention relates to the technical field of powder metallurgy and particularly discloses a polyformaldehyde-based binder for metal injection formation and a preparation method of a fed material for metal injection formation. The binder comprises the following raw materials by weight percent: 75-90% of polyformaldehyde, 5-15% of polyethylene and 1-10% of a flow promoting agent. The preparationmethod of the fed material comprises the steps that metal powder and the binder are added into a kneading machine according to a certain proportion for mixing, extrusion for granulation is performed according to a single-screw extruder, and thus the granular fed material is obtained. The binder is low in viscosity and good in fluidity and has good mold filling capacity during injection formation,the defect of a green compact is reduced, and the yield is effectively increased.