CN113524726A - Glass fiber reinforced plastic centrifugal impeller module and manufacturing method thereof - Google Patents
Glass fiber reinforced plastic centrifugal impeller module and manufacturing method thereof Download PDFInfo
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- CN113524726A CN113524726A CN202110778999.2A CN202110778999A CN113524726A CN 113524726 A CN113524726 A CN 113524726A CN 202110778999 A CN202110778999 A CN 202110778999A CN 113524726 A CN113524726 A CN 113524726A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
- B29C70/525—Component parts, details or accessories; Auxiliary operations
- B29C70/528—Heating or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
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Abstract
The invention provides a glass fiber reinforced plastic centrifugal impeller module and a manufacturing method thereof, wherein the glass fiber reinforced plastic centrifugal impeller module comprises an inner core, an impeller front cover, an impeller bottom plate and a plurality of blades which are integrally formed and manufactured; the glass fiber reinforced plastic centrifugal impeller module is characterized in that the glass fiber reinforced plastic centrifugal impeller module is made of a material comprising a fiber layer, a reinforcing layer wrapped outside the fiber layer and a durable layer wrapped outside the reinforcing layer. Through the integral forming, not only is the repeated hand pasting process avoided, but also the quality and the production efficiency of the impeller module are improved; by integrally laying the fiber layers, the laying angle and thickness are more accurate, so that the quality and the product consistency of the integrally-formed impeller module are improved; the stress of impeller module is improved through the back up coat, and the durability and the corrosion resistance of impeller module are improved through durable layer for impeller module's life-span and quality have obtained the assurance, have solved the split type unstable and the inefficiency problem of making the quality that leads to of current glass steel centrifugation impeller.
Description
Technical Field
The invention relates to the technical field of fans, in particular to a glass fiber reinforced plastic centrifugal impeller module and a manufacturing method thereof.
Background
The centrifugal fan accelerates gas by using an impeller rotating at a high speed according to the principle that kinetic energy is converted into potential energy, and then decelerates and changes the flow direction so as to convert the kinetic energy into the potential energy (pressure). In a single-stage centrifugal fan, gas enters an impeller from an axial direction, changes into a radial direction when flowing through the impeller, and then enters a diffuser; in the diffuser, the gas changes the flow direction and the cross-sectional area of the pipe increases to decelerate the gas flow, which converts kinetic energy into pressure energy; the pressure increase occurs primarily in the impeller and secondarily in the diffusion process. In a multistage centrifugal fan, a flow reverser is used to direct the air flow to the next impeller, creating a higher pressure. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion.
Conventionally, the material of an impeller in a centrifugal fan is generally iron, stainless steel, an alloy, or the like. In order to prevent the impeller from rusting and the like in some application scenes, an anti-corrosion coating is generally applied. However, as the service life of the fan increases, the anticorrosive coating is aged and peeled off, so that the quality of the fan impeller is deteriorated, and the overall operation of the fan is affected.
In order to improve the corrosion resistance of fan impellers, it has been found that glass fiber reinforced plastic can be used to replace existing materials for the impeller. Glass Fiber Reinforced Plastics (FRP), also known as GFRP, are fiber reinforced plastics, generally reinforced plastics made by reinforcing a matrix of unsaturated polyester, epoxy resin and phenolic resin with glass fibers or products thereof as reinforcing materials, and are also known as glass fiber reinforced plastics. The glass fiber reinforced plastic has the advantages of light weight, hardness, no conductivity, stable performance, high mechanical strength, less recovery, corrosion resistance and the like, so that the glass fiber reinforced plastic can be used for manufacturing the impeller and can effectively improve the efficiency and prolong the service life of the fan. For example, patent application nos. 202010293072.5 and 202011558406.3 disclose the material and process of glass fiber reinforced plastic fan impeller.
However, most of the existing manufacturing processes of the glass fiber reinforced plastic fan impeller are split, and the impeller is generally divided into three parts: the impeller front cover, the blades and the impeller bottom plate are respectively manufactured and then combined and coated. The strength of the impeller processed by the split manufacturing process is mainly determined by the combined cladding process. The existing split type manufacturing method generally adopts a hand pasting method to carry out combined coating on the impeller, so that the coating quality cannot be controlled, and the strength of the impeller cannot be guaranteed; in addition, split type manufacturing is not beneficial to controlling bubbles and gaps, curing is not uniform due to an operation method, and the quality problems of whitening of the impeller and the like are easily caused by insufficient combination of resin glass fibers due to uneven coating thickness or uneven pressure application; in addition, the machining allowance is reserved for controlling the precision during the manufacturing of the split impeller so as to facilitate later adjustment and calibration, a large amount of grinding work is needed in the manufacturing process, and the grinding process is time-consuming, labor-consuming and capable of causing dust pollution.
Disclosure of Invention
The invention aims to provide a glass fiber reinforced plastic centrifugal impeller module and a manufacturing method thereof, and aims to solve the problems of unstable quality and low efficiency caused by split manufacturing of the conventional glass fiber reinforced plastic centrifugal impeller.
In order to solve the technical problem, the invention provides a glass fiber reinforced plastic centrifugal impeller module which comprises an inner core, an impeller front cover, an impeller bottom plate and a plurality of blades, wherein the inner core, the impeller front cover, the impeller bottom plate and the plurality of blades are integrally formed, the inner core is cylindrical, the impeller front cover and the impeller bottom plate are both annular and are respectively positioned at two ends of the inner core to form a cavity, the plurality of blades are uniformly distributed in the cavity, and one end of each blade is connected with the outer wall of the inner core;
the glass fiber reinforced plastic centrifugal impeller module is characterized in that the glass fiber reinforced plastic centrifugal impeller module is made of a fiber layer, a reinforcing layer and a durable layer, wherein the reinforcing layer is wrapped outside the fiber layer; the fiber layer is made of bamboo fibers, graphite, glass fibers and polypropylene; the material of the reinforcing layer comprises polyester resin, polyurethane, a reinforcing curing agent, a reinforcing accelerator, reinforcing filler and a flame retardant; the durable layer is made of epoxy resin, phenolic resin, amino diphenyl ether resin, durable curing agent, durable accelerator, durable filler, flame retardant and antioxidant.
Optionally, in the glass fiber reinforced plastic centrifugal impeller module, the blades are arc blades, and an included angle between each arc blade and the inner core is 30-60 °.
Optionally, in the glass fiber reinforced plastic centrifugal impeller module, the impeller front cover is provided with a plurality of front cover reinforcing ribs, the number of the front cover reinforcing ribs is less than that of the blades, and the front cover reinforcing ribs are linear and form an included angle of 45-85 degrees with the inner core; the impeller bottom plate is provided with a plurality of bottom plate strengthening ribs, the quantity of bottom plate strengthening rib is less than the quantity of blade, the bottom plate strengthening rib be the straight line and with contained angle between the inner core is 45 ~ 85.
Optionally, in the glass fiber reinforced plastic centrifugal impeller module, a plurality of front cover reinforcing ribs are uniformly distributed on one side of the impeller front cover close to the impeller bottom plate; the bottom plate reinforcing ribs are uniformly distributed on one side, close to the impeller front cover, of the impeller bottom plate; the number of the front cover reinforcing ribs is consistent with that of the bottom plate reinforcing ribs, and the front cover reinforcing ribs and the bottom plate reinforcing ribs are symmetrically distributed.
Optionally, in the glass fiber reinforced plastic centrifugal impeller module, the fiber layer is made of materials in percentage by weight: 50-74% of polypropylene, 20-36% of bamboo fiber, 8-15% of graphite and 5-20% of glass fiber.
Optionally, in the glass fiber reinforced plastic centrifugal impeller module, the reinforcing layer is made of materials in percentage by weight: 30 to 46 percent of polyester resin, 25 to 34 percent of polyurethane, 10 to 18 percent of reinforcing curing agent, 8 to 12 percent of reinforcing accelerator, 15 to 25 percent of reinforcing filler and 5 to 8 percent of flame retardant; the reinforcing and curing agent comprises one or more of xylylenediamine, m-phenylenediamine, phenol methylimidazole, phthalic anhydride and dicyandiamide; the reinforcing accelerant comprises one or more of butyraldehyde aniline, hexamethylene tetramine and zinc isopropyl xanthate; the reinforcing filler comprises 68-85 wt% of glass fiber, 10-20 wt% of wollastonite and 10-20 wt% of silicon carbide; the flame retardant is a halogen-free flame retardant.
Optionally, in the glass fiber reinforced plastic centrifugal impeller module, the durable layer is made of materials in percentage by weight: 30 to 40 percent of epoxy resin, 25 to 35 percent of phenolic resin, 10 to 20 percent of amino diphenyl ether resin, 8 to 15 percent of durable curing agent, 6 to 12 percent of durable accelerator, 10 to 20 percent of durable filler, 3 to 8 percent of flame retardant and 2 to 5 percent of antioxidant; the durable curing agent comprises one or more of ethylenediamine, vinyl triamine, xylylenediamine, phthalic anhydride, and dodecenyl succinic anhydride; the durable accelerator comprises one or more of cobalt naphthenate, benzyldimethylamine, tetraethylammonium hydroxide, and methyl ketonate anhydride; the durable filler comprises 40-65 wt% of glass fiber, 5-20 wt% of titanium dioxide, 12-20 wt% of kaolin, 10-15 wt% of montmorillonite, 8-10 wt% of zinc oxide and 5-12 wt% of silane coupling agent; the flame retardant is a halogen-free flame retardant.
In order to solve the above technical problem, the present invention further provides a method for manufacturing a glass fiber reinforced plastic centrifugal impeller module, which is used for manufacturing the glass fiber reinforced plastic centrifugal impeller module, and the method comprises:
preparing a fiber layer processing material, a reinforcing layer processing material and a durable layer processing material;
designing, processing and assembling an integrated manufacturing mold, wherein the integrated manufacturing mold comprises an inner core mold, an upper cover mold, a bottom plate mold, a blade mold, a positioning plate, a core pulling, a supporting seat and a rotating mechanism; the inner core mold is used for forming an inner core; the upper cover die is used for forming a front cover of the impeller; the bottom plate die is used for forming an impeller bottom plate; the blade mould is used for forming a plurality of blades; the positioning plate is used for fixing the upper cover die and the bottom plate die at two ends of the inner core die to form a pouring cavity, and enabling the blade die to be positioned in the pouring cavity and fixed relative to the position of the inner core die; the loose core penetrates through the inner core mold, the upper cover mold, the bottom plate mold, the blade mold and the positioning plate and is positioned at the positioning plate; the supporting seat is used for bearing the inner core mold, the upper cover mold, the bottom plate mold, the blade mold and the positioning plate; the rotating mechanism is positioned at the bottom of the supporting seat and is used for driving the supporting seat to integrally rotate;
and (3) producing and processing the glass fiber reinforced plastic centrifugal impeller module by using the assembled integral manufacturing die.
Optionally, in the manufacturing method of the glass fiber reinforced plastic centrifugal impeller module, the method for preparing the fiber layer processing material, the reinforcing layer processing material and the durable layer processing material includes:
preparing a fiber layer processing material, comprising:
mixing polypropylene, graphite and glass fiber according to a preset proportion, and melting at 160-240 ℃ in vacuum;
cooling to 140-170 ℃, adding a preset amount of bamboo fibers, and fully and uniformly stirring, wherein the average length of the bamboo fibers is 5-9 mm;
extruding and cutting to obtain fiber layer processing particles with the average particle size of 3-8 mm;
packaging and storing the processed particles of the fiber layer for later use;
preparing a reinforcing layer processing material, comprising:
mixing polyester resin and polyurethane according to a preset proportion, and melting at 140-190 ℃;
cooling to 60-120 ℃, adding a preset amount of reinforcing curing agent, reinforcing accelerator, reinforcing filler and flame retardant, and fully and uniformly stirring, wherein the reinforcing filler comprises 68-85% by weight of glass fiber, 10-20% by weight of wollastonite and 10-20% by weight of silicon carbide;
extruding and cutting to obtain reinforcing layer processing particles with the average particle size of 3-8 mm;
packaging and storing the reinforcing layer processing particles for later use;
formulating a durable layer processing material comprising:
mixing epoxy resin, phenolic resin and aminodiphenyl ether resin according to a preset proportion in a clean environment;
adding a preset amount of durable curing agent, durable accelerator, durable filler, flame retardant and antioxidant, and fully and uniformly stirring to obtain a durable layer processing solvent, wherein the durable filler comprises 40-65% by weight of glass fiber, 5-20% by weight of titanium dioxide, 12-20% by weight of kaolin, 10-15% by weight of montmorillonite, 8-10% by weight of zinc oxide and 5-12% by weight of silane coupling agent;
and sealing and storing the mixed durable layer processing solvent for later use.
Optionally, in the manufacturing method of the glass fiber reinforced plastic centrifugal impeller module, the integral manufacturing mold has a first state, a second state and a third state when being closed; the method for producing and processing the glass fiber reinforced plastic centrifugal impeller module by using the assembled integral manufacturing die comprises the following steps:
enabling the integrated manufacturing mould to be in a first state, and utilizing the fiber layer processing particles to pour and form a fiber layer, wherein the forming temperature is 160-180 ℃, the forming pressure is 0.5-0.8 MPa, and the forming time is 5-12 s;
slowly cooling to 40-80 ℃ within 3-10 min to enable the solidification degree of the fiber layer to be more than 60%;
enabling the integrated manufacturing mold to be in a second state, and utilizing the reinforcing layer processing particles to pour and form a reinforcing layer on the surface of the fiber layer, wherein the forming temperature is 120-140 ℃, the forming pressure is 0.3-0.5 MPa, and the forming time is 14-26 s;
slowly cooling to 30-60 ℃ within 5-20 min to enable the solidification degree of the reinforcing layer to be more than 80%;
cooling to room temperature, enabling the integrated manufacturing mold to be in a third state, and pouring the durable layer processing solvent to form a durable layer on the surface of the reinforcing layer;
keeping the integrated manufacturing mold in a third state for 30-45 min so that the curing degree of the durable layer is more than 90%;
opening the integrated manufacturing mold, and taking out the integrally processed and molded glass fiber reinforced plastic centrifugal impeller blank;
placing the glass fiber reinforced plastic centrifugal impeller blank at normal temperature for 24-72 hours so as to completely cool and solidify the glass fiber reinforced plastic centrifugal impeller blank;
and grinding the blank of the glass fiber reinforced plastic centrifugal impeller to form a glass fiber reinforced plastic centrifugal impeller module.
The invention provides a glass fiber reinforced plastic centrifugal impeller module and a manufacturing method thereof, wherein the glass fiber reinforced plastic centrifugal impeller module comprises an inner core, an impeller front cover, an impeller bottom plate and a plurality of blades which are integrally formed, the inner core is cylindrical, the impeller front cover and the impeller bottom plate are both annular and are respectively positioned at two ends of the inner core to form a cavity, the plurality of blades are uniformly distributed in the cavity, and one end of each blade is connected with the outer wall of the inner core; the glass fiber reinforced plastic centrifugal impeller module is characterized in that the glass fiber reinforced plastic centrifugal impeller module is made of a fiber layer, a reinforcing layer and a durable layer, wherein the reinforcing layer is wrapped outside the fiber layer; the fiber layer is made of bamboo fibers, graphite, glass fibers and polypropylene; the material of the reinforcing layer comprises polyester resin, polyurethane, a reinforcing curing agent, a reinforcing accelerator, reinforcing filler and a flame retardant; the durable layer is made of epoxy resin, phenolic resin, amino diphenyl ether resin, durable curing agent, durable accelerator, durable filler, flame retardant and antioxidant. Through the integral forming, not only is the repeated hand pasting process avoided, but also the quality and the production efficiency of the impeller module are improved; the quality and the service life of the integrally formed impeller module are improved more accurately by integrally laying the fiber layers and paving the angle and the thickness; the stress of impeller module is improved through the back up coat, and the durability and the corrosion resistance of impeller module are improved through durable layer for impeller module's life-span and quality have obtained the assurance, have solved the split type unstable and the inefficiency problem of making the quality that leads to of current glass steel centrifugation impeller.
Drawings
FIG. 1 is a schematic structural diagram of a glass fiber reinforced plastic centrifugal impeller module;
FIG. 2 is a flow chart of a method for manufacturing a centrifugal impeller module made of glass fiber reinforced plastics;
FIG. 3 is a schematic structural view of an integrally fabricated mold;
FIG. 4 is a partial enlarged view of a rotation mechanism of the integrated manufacturing mold;
wherein the reference numerals are as follows:
110-an inner core; 120-impeller front cover; 121-front cover reinforcing ribs; 130-a blade; 210-an inner mandrel; 220-upper cover mould; 230-a floor form; 240-blade mould; 250-a positioning plate; 260-core pulling; 270-a support seat; 280-a rotating mechanism; 281-a support holder; 282-base holder.
Detailed Description
The invention provides a glass fiber reinforced plastic centrifugal impeller module and a manufacturing method thereof, which are further described in detail with reference to the accompanying drawings and specific embodiments. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of the present invention and the accompanying drawings, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment provides a glass fiber reinforced plastic centrifugal impeller module, as shown in fig. 1, the glass fiber reinforced plastic centrifugal impeller module includes an inner core 110, an impeller front cover 120, an impeller bottom plate (not shown in the figure) and a plurality of blades 130 that are integrally formed, the inner core 110 is cylindrical, the impeller front cover 120 and the impeller bottom plate are all annular, and are respectively located at two ends of the inner core 110 to form a cavity, the plurality of blades 130 are uniformly distributed in the cavity, and one end of each blade is connected with the outer wall of the inner core 110.
Specifically, the inner core 110 is an air inlet of the impeller module, so that the inner wall thereof may be tapered to compress the air flow. The impeller front cover 120 and the impeller bottom plate are used for adapting to the outer contour of the centrifuge and protecting the blades 130, so that the impeller front cover 120 and the impeller bottom plate are both designed to be circular. The vane 130 has one end connected to the inner core 110 so that the vane 130 can be rotated when the inner core 110 rotates.
The glass steel centrifugal impeller module that this embodiment provided through integrated into one piece, has not only saved the required a large amount of manual works of hand paste technology, can also guarantee the uniformity between each impeller module. In addition, with the help of an organic whole machine-shaping technique, can also guarantee the precision of each course of working to the quality of accurate control impeller module. Compare in prior art, the glass steel centrifugal impeller module that this embodiment provided not only processingquality is high, production efficiency is high, and the cost of labor is low moreover, is favorable to batch production.
The glass fiber reinforced plastic centrifugal impeller module provided by the embodiment is made of a fiber layer, a reinforcing layer and a durable layer, wherein the reinforcing layer is wrapped outside the fiber layer; the fiber layer is made of bamboo fibers, graphite, glass fibers and polypropylene; the material of the reinforcing layer comprises polyester resin, polyurethane, a reinforcing curing agent, a reinforcing accelerator, reinforcing filler and a flame retardant; the durable layer is made of epoxy resin, phenolic resin, amino diphenyl ether resin, durable curing agent, durable accelerator, durable filler, flame retardant and antioxidant.
According to the glass fiber reinforced plastic centrifugal impeller module provided by the embodiment, the fiber layers are integrally laid, and the laying angle and the thickness are more accurate, so that the quality and the product consistency of the integrally formed impeller module are improved; the atress through the back up coat improvement impeller module, through durability and the corrosion resistance of durable layer improvement impeller module for impeller module's life-span and quality have obtained the assurance. Therefore, the problems of unstable quality and low efficiency caused by the split type manufacturing of the existing glass fiber reinforced plastic centrifugal impeller are solved by utilizing the integrated forming technology.
Specifically, in this embodiment, the blade 130 is an arc blade, and an included angle between the arc blade and the inner core is 30 to 60 °. The arc blade has good aerodynamic characteristics, high efficiency, good strength and high rigidity, and has higher working efficiency at an included angle of 30-60 degrees.
Further, in this embodiment, the impeller front cover 120 is provided with a plurality of front cover reinforcing ribs 121, the number of the front cover reinforcing ribs 121 is less than the number of the blades 130, and the front cover reinforcing ribs 121 are linear and form an included angle of 45 to 85 degrees with the inner core 110. Increase the strengthening rib and can effectively improve the tolerance and the intensity of impeller protecgulum, in addition, set up the strengthening rib into the atress that can effectively the equilibrium promote each department of impeller protecgulum for sharp benefit, set up the strengthening rib into 45 ~ 85 contained angles with the inner core and can guarantee that the structure of impeller protecgulum can not warp because of the rotation of blade when the blade is rotatory.
Equally, the impeller bottom plate is provided with a plurality of bottom plate strengthening ribs, the quantity of bottom plate strengthening rib is less than the quantity of blade, the bottom plate strengthening rib be the straight line and with contained angle between the inner core is 45 ~ 85.
Preferably, in this embodiment, the front cover reinforcing ribs are uniformly distributed on one side of the front cover of the impeller, which is close to the impeller base plate; the bottom plate reinforcing ribs are uniformly distributed on one side, close to the impeller front cover, of the impeller bottom plate. So, be favorable to impeller module's equipment, and can improve the aesthetic property of impeller module outward appearance. The number of the front cover reinforcing ribs is consistent with that of the bottom plate reinforcing ribs, and the front cover reinforcing ribs and the bottom plate reinforcing ribs are symmetrically distributed. So can guarantee that the intensity and the stress point of impeller protecgulum and impeller bottom plate are unanimous, guarantee the stability of impeller module both sides.
For example, as shown in fig. 1, the number of blades is 10, the number of reinforcing ribs on the impeller front cover and the impeller bottom plate is 5 respectively, the number ratio of the blades to the reinforcing ribs is 2:1, and stress caused by rotation of 2 blades is borne by one reinforcing rib, so that the structural strength and stability can be improved on the basis of reducing the structural complexity as much as possible.
In this embodiment, the fiber layer includes, by weight: 50-74% of polypropylene, 20-36% of bamboo fiber, 8-15% of graphite and 5-20% of glass fiber.
The glass fiber reinforced plastic material added with the bamboo fibers can have stronger toughness, air permeability and wear resistance than the conventional glass fiber reinforced plastic material, and can resist ultraviolet rays, so that the service life of the impeller module is prolonged. Utilize the fibrous layer to carry out the whole laying of bottoming, can improve the machining precision for the stability and the uniformity of impeller module are higher.
In addition, in this embodiment, the material of the reinforcing layer includes, by weight: 30 to 46 percent of polyester resin, 25 to 34 percent of polyurethane, 10 to 18 percent of reinforcing curing agent, 8 to 12 percent of reinforcing accelerator, 15 to 25 percent of reinforcing filler and 5 to 8 percent of flame retardant.
Specifically, the reinforcing and curing agent comprises one or more of xylylenediamine, m-phenylenediamine, phenol methylimidazole, phthalic anhydride and dicyandiamide; the reinforcing accelerant comprises one or more of butyraldehyde aniline, hexamethylene tetramine and zinc isopropyl xanthate; the reinforcing filler comprises 68-85 wt% of glass fiber, 10-20 wt% of wollastonite and 10-20 wt% of silicon carbide; the flame retardant is a halogen-free flame retardant.
Wollastonite and carborundum can effectively improve the wearability and the insulating nature of impeller module. The halogen-free flame retardant not only can effectively retard flame, but also is environment-friendly. The antioxidant can effectively improve the oxidation resistance of the impeller module, thereby improving the service life of the impeller module.
And, in this embodiment, the durable layer is made of materials in percentage by weight: 30 to 40 percent of epoxy resin, 25 to 35 percent of phenolic resin, 10 to 20 percent of amino diphenyl ether resin, 8 to 15 percent of durable curing agent, 6 to 12 percent of durable accelerator, 10 to 20 percent of durable filler, 3 to 8 percent of flame retardant and 2 to 5 percent of antioxidant.
Specifically, the durable curing agent includes one or more of ethylenediamine, vinyltriamine, xylylenediamine, phthalic anhydride, and dodecenylsuccinic anhydride; the durable accelerator comprises one or more of cobalt naphthenate, benzyldimethylamine, tetraethylammonium hydroxide, and methyl ketonate anhydride; the durable filler comprises 40-65 wt% of glass fiber, 5-20 wt% of titanium dioxide, 12-20 wt% of kaolin, 10-15 wt% of montmorillonite, 8-10 wt% of zinc oxide and 5-12 wt% of silane coupling agent; the flame retardant is a halogen-free flame retardant.
Titanium dioxide can improve impeller module's high temperature resistance, and has certain ultraviolet resistance efficiency to can improve impeller module's life. Kaolin, also known as dolomitic clay, can improve the plasticity of the durable layer and the bonding property of various materials, and has better fire resistance and electrical insulation property, so that the safety problems of ignition and the like caused by static electricity generated by the rotation of blades in the long-term use of the impeller are avoided. Montmorillonite is as adsorption material and catalytic material, can improve the adhesion degree between back up coat and the durable layer to and make impeller module's mechanical properties, fire behaviour and thermal stability can obtain improving. The zinc oxide can effectively shield ultraviolet rays, prevent the glass steel from aging and prolong the service life of the impeller module; preferably, nano zinc oxide can be selected, so that better ultraviolet protection is provided; in addition, the addition of zinc oxide can also increase the corrosion resistance, fire resistance and tear resistance of the durable layer. The silane coupling agent is used for improving the adhesive property of the glass fiber and the resin, thereby improving the mechanical properties and physical properties of the glass fiber reinforced plastic, such as strength, electric property, water resistance, weather resistance and the like; the silane coupling agent may specifically be a vinyl silane, an amino silane, a methacryloxy silane, or the like.
The present embodiment further provides a manufacturing method of a glass fiber reinforced plastic centrifugal impeller module, as shown in fig. 2, the manufacturing method includes:
preparing a fiber layer processing material, a reinforcing layer processing material and a durable layer processing material;
designing, processing and assembling an integrated manufacturing die;
and (3) producing and processing the glass fiber reinforced plastic centrifugal impeller module by using the assembled integral manufacturing die.
As shown in fig. 3, the integral manufacturing mold includes an inner core mold 210, an upper cover mold 220, a bottom plate mold 230, a blade mold 240, a positioning plate 250, a core 260, a support seat 270, and a rotating mechanism 280; the inner core mold 210 is used to form an inner core; the upper cover mold 220 is used for forming an impeller front cover; the bottom plate mold 230 is used for forming an impeller bottom plate; the blade mold 240 is used to form a plurality of blades; the positioning plate 250 is used to fix the upper cover mold 220 and the base mold 230 to both ends of the inner core mold 210 to form a pouring cavity, and to fix the vane mold 240 in the pouring cavity and with respect to the inner core mold 210; the loose core 260 penetrates through the inner core mold 210, the upper cover mold 220, the bottom plate mold 230, the blade mold 240 and the positioning plate 250 and is positioned at the positioning plate 250; the supporting seat 270 is used for supporting the inner core mold 210, the upper cover mold 220, the bottom plate mold 230, the vane mold 240 and the positioning plate 250; the rotating mechanism 280 is located at the bottom of the supporting seat 270, and is used for driving the supporting seat 270 to rotate integrally.
Specifically, as shown in fig. 4, the rotating mechanism 280 includes a supporting holder 281 and a base holder 282, the supporting holder 281 and the base holder 282 are rotatably sleeved, a shock absorbing stopper is disposed at a contact portion between the supporting holder 281 and the base holder 282 to limit a relative position between the supporting holder 281 and the base holder 282, and the supporting holder 281 does not have friction and does not shake when rotating relative to the base holder 282, so as to prolong a service life of the rotating mechanism 280. Of course, the rotating mechanism 280 should also have an electrically driven module, and the design of the module is well known to those skilled in the art and will not be described herein.
It should be noted that the specific structures of the integrally manufactured mold provided in this embodiment, such as the runner, the positioning pin, the structure of each module, the material of the mold, and the processing method, are well known to those skilled in the art of mold manufacturing, and are not described herein again.
In this embodiment, the method of formulating the fibrous layer processing material, the reinforcing layer processing material and the durable layer processing material includes:
preparing a fiber layer processing material, comprising:
mixing polypropylene, graphite and glass fiber according to a preset proportion, and melting at 160-240 ℃ in vacuum;
cooling to 140-170 ℃, adding a preset amount of bamboo fibers, and fully and uniformly stirring, wherein the average length of the bamboo fibers is 5-9 mm;
extruding and cutting to obtain fiber layer processing particles with the average particle size of 3-8 mm;
and packaging and storing the processed particles of the fiber layer for later use.
Preparing a reinforcing layer processing material, comprising:
mixing polyester resin and polyurethane according to a preset proportion, and melting at 140-190 ℃;
cooling to 60-120 ℃, adding a preset amount of reinforcing curing agent, reinforcing accelerator, reinforcing filler and flame retardant, and fully and uniformly stirring, wherein the reinforcing filler comprises 68-85% by weight of glass fiber, 10-20% by weight of wollastonite and 10-20% by weight of silicon carbide;
extruding and cutting to obtain reinforcing layer processing particles with the average particle size of 3-8 mm;
and packaging and storing the reinforcing layer processed particles for later use.
Formulating a durable layer processing material comprising:
mixing epoxy resin, phenolic resin and aminodiphenyl ether resin according to a preset proportion in a clean environment;
adding a preset amount of durable curing agent, durable accelerator, durable filler, flame retardant and antioxidant, and fully and uniformly stirring to obtain a durable layer processing solvent, wherein the durable filler comprises 40-65% by weight of glass fiber, 5-20% by weight of titanium dioxide, 12-20% by weight of kaolin, 10-15% by weight of montmorillonite, 8-10% by weight of zinc oxide and 5-12% by weight of silane coupling agent;
and sealing and storing the mixed durable layer processing solvent for later use.
And, in this embodiment, the integrally-manufactured mold has a first state, a second state, and a third state when closed; the method for producing and processing the glass fiber reinforced plastic centrifugal impeller module by using the assembled integral manufacturing die comprises the following steps:
enabling the integrated manufacturing mould to be in a first state, and utilizing the fiber layer processing particles to pour and form a fiber layer, wherein the forming temperature is 160-180 ℃, the forming pressure is 0.5-0.8 MPa, and the forming time is 5-12 s;
slowly cooling to 40-80 ℃ within 3-10 min to enable the solidification degree of the fiber layer to be more than 60%;
enabling the integrated manufacturing mold to be in a second state, and utilizing the reinforcing layer processing particles to pour and form a reinforcing layer on the surface of the fiber layer, wherein the forming temperature is 120-140 ℃, the forming pressure is 0.3-0.5 MPa, and the forming time is 14-26 s;
slowly cooling to 30-60 ℃ within 5-20 min to enable the solidification degree of the reinforcing layer to be more than 80%;
cooling to room temperature, enabling the integrated manufacturing mold to be in a third state, and pouring the durable layer processing solvent to form a durable layer on the surface of the reinforcing layer;
keeping the integrated manufacturing mold in a third state for 30-45 min so that the curing degree of the durable layer is more than 90%;
opening the integrated manufacturing mold, and taking out the integrally processed and molded glass fiber reinforced plastic centrifugal impeller blank;
placing the glass fiber reinforced plastic centrifugal impeller blank at normal temperature for 24-72 hours so as to completely cool and solidify the glass fiber reinforced plastic centrifugal impeller blank;
and grinding the blank of the glass fiber reinforced plastic centrifugal impeller to form a glass fiber reinforced plastic centrifugal impeller module.
It should be noted that those skilled in the art will appreciate that to form a reinforcing layer over the fibrous layer, the size of the mold cavity in the second state should be larger than the size of the cavity in the first state, and that to form a durable layer over the reinforcing layer, the size of the mold cavity in the third state should be larger than the size of the cavity in the second state. Of course, in order to make the reinforcing layer uniformly cover the surface of the fiber layer and the durable layer uniformly cover the surface of the reinforcing layer, a supporting and positioning structure, such as a positioning column, should be provided at a proper position in the mold.
The manufacturing process of manufacturing the glass fiber reinforced plastic centrifugal impeller blank by utilizing the integrated manufacturing die is similar to the injection molding process, and the manufacturing method specifically comprises the following steps:
and (4) erecting the integral manufacturing mold on a base platform of the injection molding machine and fixing the integral manufacturing mold. In the embodiment, the integrally manufactured mold is erected and fixed by using the rotating mechanism and the core pulling and other auxiliary fixing devices.
Then, the injection molding machine is connected with three feed inlets to respectively pour into fibre layer processing material, back up coat processing material and durable layer processing material to the mould, thereby realize the automatic integrated into one piece of impeller module and make the shaping.
And finally, performing injection molding by using the processing technology. Because impeller module is central symmetry, core die department including consequently pouring into the mouth setting, the size of considering impeller module is great usually, in order to accelerate the packing of material to and the outflow of air in the mould, can utilize rotary mechanism to rotate, utilize centrifugal force to throw the material fast into the edge of an organic whole manufacturing mould, and can guarantee that the material is filled compactly. The rate of rotation will depend on the actual die configuration and size.
Because the impeller module has different temperature demands in three stages in the integrated processing manufacturing process, consequently need the solidification of natural cooling at normal atmospheric temperature after taking out glass steel centrifugal impeller blank, guarantee that inside because of the stress that the difference in temperature caused releases completely to and the structure is stereotyped completely. And, because the impeller module needs high pressure to carry out the pressfitting in the integrated into one piece manufacturing process to there is not influence product quality such as bubble in guaranteeing the impeller module, consequently can produce deckle edge in the joint line department of mould, so just need polish the glass steel centrifugation impeller blank, in order to get rid of deckle edge.
Hereinafter, the material and manufacturing process of the centrifugal impeller module made of glass fiber reinforced plastic according to the present invention will be described with reference to an embodiment.
Firstly, preparing a fiber layer processing material: mixing 60 wt% of polypropylene, 10 wt% of graphite and 5 wt% of glass fiber, and melting at 200 ℃ under vacuum; cooling to 150 ℃, adding 25 wt% of bamboo fiber, and fully and uniformly stirring, wherein the average length of the bamboo fiber is 5-9 mm; extruding and cutting to obtain fiber layer processing particles with the average particle size of 3-8 mm; and packaging and storing the processed particles of the fiber layer for later use.
Then, preparing a reinforcing layer processing material: mixing 32% by weight of polyester resin and 28% by weight of polyurethane, and melting at 160 ℃; cooling to 100 ℃, adding 10 wt% of reinforcing curing agent, 8 wt% of reinforcing accelerator, 17 wt% of reinforcing filler and 5 wt% of flame retardant, and fully and uniformly stirring, wherein the reinforcing curing agent is m-phenylenediamine, the reinforcing accelerator is hexamethylenetetramine, the reinforcing filler comprises 70 wt% of glass fiber, 15 wt% of wollastonite and 15 wt% of silicon carbide, and the flame retardant is a mixture of aluminum hydroxide and magnesium hydroxide; extruding and cutting to obtain reinforcing layer processing particles with the average particle size of 3-8 mm; and packaging and storing the reinforcing layer processed particles for later use.
Next, a durable layer processing material was formulated: mixing 35 wt% of epoxy resin, 25 wt% of phenolic resin and 10 wt% of aminodiphenyl ether resin in a clean environment; adding 8 weight percent of durable curing agent, 6 weight percent of durable accelerator, 10 weight percent of durable filler, 4 weight percent of flame retardant and 2 weight percent of antioxidant, fully and uniformly stirring to obtain a durable layer processing solvent, wherein the durable curing agent is a mixture of ethylenediamine, phthalic anhydride and dodecenyl succinic anhydride, the durable promoter is cobalt naphthenate, the durable filler comprises 50 weight percent of glass fiber, 15 weight percent of titanium dioxide, 12 weight percent of kaolin, 10 weight percent of montmorillonite, 8 weight percent of zinc oxide and 5 weight percent of silane coupling agent, the flame retardant is phosphate ester flame retardant, and the antioxidant is a mixture of Butyl Hydroxy Anisole (BHA) and dibutyl hydroxy toluene (BHT); and sealing and storing the mixed durable layer processing solvent for later use.
And then, erecting an integral manufacturing mold on the injection molding machine table and fixing the integral manufacturing mold, wherein the inner core mold is connected with three feeding ports, and the three feeding ports are used for respectively conveying the fiber layer processing material, the reinforcing layer processing material and the durable layer processing material.
Machine parameters are set. Specifically, in the first state, the die is communicated with a feeding port of a fiber layer processing material, the molding temperature is 165 ℃, the molding pressure is 0.5MPa, and the molding time is 8 s; in the second state, the die is communicated with a feeding port of the reinforcing layer processing material, the molding temperature is 130 ℃, the molding pressure is 0.4MPa, and the molding time is 18 s; and in the third state, the die is communicated with a feeding port of the processing material of the durable layer, and the final parameters of the equipment are kept unchanged. And the temperature control device of the machine station is used for monitoring the temperature in the mold and switching the states when the temperature in the mold reaches a set value, specifically, after the equipment starts processing, the integrally-manufactured mold is switched to the second state when the temperature in the mold is monitored to be reduced to 55 ℃, and after the equipment is processed in sequence, the temperature in the mold is monitored to be reduced again and is switched to the third state when the temperature in the mold is monitored to be reduced to 26 ℃. And after the state is switched to the third state, the machine automatically counts time, and automatically opens the integrated manufacturing die after 45 minutes so as to take out the glass fiber reinforced plastic centrifugal impeller blank.
After the equipment parameter setting is finished, a starting button is pressed, the equipment automatically carries out integrated injection molding operation until an integrated manufacturing die is automatically opened, and a glass fiber reinforced plastic centrifugal impeller blank is taken out. Preferably, the glass fiber reinforced plastic centrifugal impeller blank can be taken out by a mechanical arm. And then carrying out the working procedures of manual polishing, inspection, packaging and the like.
The glass fiber reinforced plastic centrifugal impeller module manufactured by the method has high processing efficiency, high product yield and high stability, and the produced glass fiber reinforced plastic centrifugal impeller module has better working performance.
In summary, the glass fiber reinforced plastic centrifugal impeller module and the manufacturing method thereof provided by this embodiment include an inner core, an impeller front cover, an impeller bottom plate and a plurality of blades that are integrally formed, the inner core is cylindrical, the impeller front cover and the impeller bottom plate are both annular and are respectively located at two ends of the inner core to form a cavity, the plurality of blades are uniformly distributed in the cavity, and one end of each blade is connected to an outer wall of the inner core; the glass fiber reinforced plastic centrifugal impeller module is characterized in that the glass fiber reinforced plastic centrifugal impeller module is made of a fiber layer, a reinforcing layer and a durable layer, wherein the reinforcing layer is wrapped outside the fiber layer; the fiber layer is made of bamboo fibers, graphite, glass fibers and polypropylene; the material of the reinforcing layer comprises polyester resin, polyurethane, a reinforcing curing agent, a reinforcing accelerator, reinforcing filler and a flame retardant; the durable layer is made of epoxy resin, phenolic resin, amino diphenyl ether resin, durable curing agent, durable accelerator, durable filler, flame retardant and antioxidant. Through the integral forming, not only is the repeated hand pasting process avoided, but also the quality and the production efficiency of the impeller module are improved; the quality and the service life of the integrally formed impeller module are improved more accurately by integrally laying the fiber layers and paving the angle and the thickness; the stress of impeller module is improved through the back up coat, and the durability and the corrosion resistance of impeller module are improved through durable layer for impeller module's life-span and quality have obtained the assurance, have solved the split type unstable and the inefficiency problem of making the quality that leads to of current glass steel centrifugation impeller.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. The glass fiber reinforced plastic centrifugal impeller module is characterized by comprising an inner core, an impeller front cover, an impeller bottom plate and a plurality of blades, wherein the inner core, the impeller front cover, the impeller bottom plate and the plurality of blades are integrally formed, the inner core is cylindrical, the impeller front cover and the impeller bottom plate are both annular and are respectively positioned at two ends of the inner core to form a cavity, the plurality of blades are uniformly distributed in the cavity, and one end of each blade is connected with the outer wall of the inner core;
the glass fiber reinforced plastic centrifugal impeller module is characterized in that the glass fiber reinforced plastic centrifugal impeller module is made of a fiber layer, a reinforcing layer and a durable layer, wherein the reinforcing layer is wrapped outside the fiber layer; the fiber layer is made of bamboo fibers, graphite, glass fibers and polypropylene; the material of the reinforcing layer comprises polyester resin, polyurethane, a reinforcing curing agent, a reinforcing accelerator, reinforcing filler and a flame retardant; the durable layer is made of epoxy resin, phenolic resin, amino diphenyl ether resin, durable curing agent, durable accelerator, durable filler, flame retardant and antioxidant.
2. The GRP centrifugal impeller module according to claim 1, wherein the blades are arc blades, and an included angle between each arc blade and the inner core is 30-60 degrees.
3. The glass fiber reinforced plastic centrifugal impeller module of claim 1, wherein the impeller front cover is provided with a plurality of front cover reinforcing ribs, the number of the front cover reinforcing ribs is less than that of the blades, and the front cover reinforcing ribs are linear and form an included angle of 45-85 degrees with the inner core; the impeller bottom plate is provided with a plurality of bottom plate strengthening ribs, the quantity of bottom plate strengthening rib is less than the quantity of blade, the bottom plate strengthening rib be the straight line and with contained angle between the inner core is 45 ~ 85.
4. The glass fiber reinforced plastic centrifugal impeller module of claim 3, wherein a plurality of the front cover reinforcing ribs are uniformly distributed on one side of the impeller front cover close to the impeller bottom plate; the bottom plate reinforcing ribs are uniformly distributed on one side, close to the impeller front cover, of the impeller bottom plate; the number of the front cover reinforcing ribs is consistent with that of the bottom plate reinforcing ribs, and the front cover reinforcing ribs and the bottom plate reinforcing ribs are symmetrically distributed.
5. The glass fiber reinforced plastic centrifugal impeller module of claim 1, wherein the fiber layer comprises, in weight percent: 50-74% of polypropylene, 20-36% of bamboo fiber, 8-15% of graphite and 5-20% of glass fiber.
6. The glass fiber reinforced plastic centrifugal impeller module of claim 1, wherein the reinforcing layer comprises, by weight: 30 to 46 percent of polyester resin, 25 to 34 percent of polyurethane, 10 to 18 percent of reinforcing curing agent, 8 to 12 percent of reinforcing accelerator, 15 to 25 percent of reinforcing filler and 5 to 8 percent of flame retardant; the reinforcing and curing agent comprises one or more of xylylenediamine, m-phenylenediamine, phenol methylimidazole, phthalic anhydride and dicyandiamide; the reinforcing accelerant comprises one or more of butyraldehyde aniline, hexamethylene tetramine and zinc isopropyl xanthate; the reinforcing filler comprises 68-85 wt% of glass fiber, 10-20 wt% of wollastonite and 10-20 wt% of silicon carbide; the flame retardant is a halogen-free flame retardant.
7. The FRP centrifugal impeller module as claimed in claim 1, wherein the durable layer comprises the following materials by weight percent: 30 to 40 percent of epoxy resin, 25 to 35 percent of phenolic resin, 10 to 20 percent of amino diphenyl ether resin, 8 to 15 percent of durable curing agent, 6 to 12 percent of durable accelerator, 10 to 20 percent of durable filler, 3 to 8 percent of flame retardant and 2 to 5 percent of antioxidant; the durable curing agent comprises one or more of ethylenediamine, vinyl triamine, xylylenediamine, phthalic anhydride, and dodecenyl succinic anhydride;
the durable accelerator comprises one or more of cobalt naphthenate, benzyldimethylamine, tetraethylammonium hydroxide, and methyl ketonate anhydride; the durable filler comprises 40-65 wt% of glass fiber, 5-20 wt% of titanium dioxide, 12-20 wt% of kaolin, 10-15 wt% of montmorillonite, 8-10 wt% of zinc oxide and 5-12 wt% of silane coupling agent; the flame retardant is a halogen-free flame retardant.
8. A method for manufacturing a glass fiber reinforced plastic centrifugal impeller module, which is used for manufacturing the glass fiber reinforced plastic centrifugal impeller module according to any one of claims 1 to 7, and is characterized by comprising the following steps:
preparing a fiber layer processing material, a reinforcing layer processing material and a durable layer processing material;
designing, processing and assembling an integrated manufacturing mold, wherein the integrated manufacturing mold comprises an inner core mold, an upper cover mold, a bottom plate mold, a blade mold, a positioning plate, a core pulling, a supporting seat and a rotating mechanism; the inner core mold is used for forming an inner core; the upper cover die is used for forming a front cover of the impeller; the bottom plate die is used for forming an impeller bottom plate; the blade mould is used for forming a plurality of blades; the positioning plate is used for fixing the upper cover die and the bottom plate die at two ends of the inner core die to form a pouring cavity, and enabling the blade die to be positioned in the pouring cavity and fixed relative to the position of the inner core die; the loose core penetrates through the inner core mold, the upper cover mold, the bottom plate mold, the blade mold and the positioning plate and is positioned at the positioning plate; the supporting seat is used for bearing the inner core mold, the upper cover mold, the bottom plate mold, the blade mold and the positioning plate; the rotating mechanism is positioned at the bottom of the supporting seat and is used for driving the supporting seat to integrally rotate;
and (3) producing and processing the glass fiber reinforced plastic centrifugal impeller module by using the assembled integral manufacturing die.
9. The method of claim 8, wherein the step of preparing the fiber layer process material, the reinforcement layer process material and the durable layer process material comprises:
preparing a fiber layer processing material, comprising:
mixing polypropylene, graphite and glass fiber according to a preset proportion, and melting at 160-240 ℃ in vacuum;
cooling to 140-170 ℃, adding a preset amount of bamboo fibers, and fully and uniformly stirring, wherein the average length of the bamboo fibers is 5-9 mm;
extruding and cutting to obtain fiber layer processing particles with the average particle size of 3-8 mm;
packaging and storing the processed particles of the fiber layer for later use;
preparing a reinforcing layer processing material, comprising:
mixing polyester resin and polyurethane according to a preset proportion, and melting at 140-190 ℃;
cooling to 60-120 ℃, adding a preset amount of reinforcing curing agent, reinforcing accelerator, reinforcing filler and flame retardant, and fully and uniformly stirring, wherein the reinforcing filler comprises 68-85% by weight of glass fiber, 10-20% by weight of wollastonite and 10-20% by weight of silicon carbide;
extruding and cutting to obtain reinforcing layer processing particles with the average particle size of 3-8 mm;
packaging and storing the reinforcing layer processing particles for later use;
formulating a durable layer processing material comprising:
mixing epoxy resin, phenolic resin and aminodiphenyl ether resin according to a preset proportion in a clean environment;
adding a preset amount of durable curing agent, durable accelerator, durable filler, flame retardant and antioxidant, and fully and uniformly stirring to obtain a durable layer processing solvent, wherein the durable filler comprises 40-65% by weight of glass fiber, 5-20% by weight of titanium dioxide, 12-20% by weight of kaolin, 10-15% by weight of montmorillonite, 8-10% by weight of zinc oxide and 5-12% by weight of silane coupling agent;
and sealing and storing the mixed durable layer processing solvent for later use.
10. The method of claim 9, wherein the integrally-fabricated mold has a first state, a second state, and a third state when closed; the method for producing and processing the glass fiber reinforced plastic centrifugal impeller module by using the assembled integral manufacturing die comprises the following steps:
enabling the integrated manufacturing mould to be in a first state, and utilizing the fiber layer processing particles to pour and form a fiber layer, wherein the forming temperature is 160-180 ℃, the forming pressure is 0.5-0.8 MPa, and the forming time is 5-12 s;
slowly cooling to 40-80 ℃ within 3-10 min to enable the solidification degree of the fiber layer to be more than 60%;
enabling the integrated manufacturing mold to be in a second state, and utilizing the reinforcing layer processing particles to pour and form a reinforcing layer on the surface of the fiber layer, wherein the forming temperature is 120-140 ℃, the forming pressure is 0.3-0.5 MPa, and the forming time is 14-26 s;
slowly cooling to 30-60 ℃ within 5-20 min to enable the solidification degree of the reinforcing layer to be more than 80%;
cooling to room temperature, enabling the integrated manufacturing mold to be in a third state, and pouring the durable layer processing solvent to form a durable layer on the surface of the reinforcing layer;
keeping the integrated manufacturing mold in a third state for 30-45 min so that the curing degree of the durable layer is more than 90%;
opening the integrated manufacturing mold, and taking out the integrally processed and molded glass fiber reinforced plastic centrifugal impeller blank;
placing the glass fiber reinforced plastic centrifugal impeller blank at normal temperature for 24-72 hours so as to completely cool and solidify the glass fiber reinforced plastic centrifugal impeller blank;
and grinding the blank of the glass fiber reinforced plastic centrifugal impeller to form a glass fiber reinforced plastic centrifugal impeller module.
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| CN202110778999.2A CN113524726A (en) | 2021-07-09 | 2021-07-09 | Glass fiber reinforced plastic centrifugal impeller module and manufacturing method thereof |
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| CN114919104A (en) * | 2022-04-22 | 2022-08-19 | 恒驰环保设备（南京）有限公司 | Glass fiber reinforced plastic impeller vacuum infusion forming die |
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| CN206568585U (en) * | 2017-03-02 | 2017-10-20 | 佛山市正州环保通风设备有限公司 | A kind of glass fibre reinforced plastic centrifugal mould |
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- 2021-07-09 CN CN202110778999.2A patent/CN113524726A/en active Pending
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| CN206568585U (en) * | 2017-03-02 | 2017-10-20 | 佛山市正州环保通风设备有限公司 | A kind of glass fibre reinforced plastic centrifugal mould |
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