CN113580253A - Corrugated pipe resistant to strong acid and alkali corrosion and high temperature and processing method thereof - Google Patents

Corrugated pipe resistant to strong acid and alkali corrosion and high temperature and processing method thereof Download PDF

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Publication number
CN113580253A
CN113580253A CN202110872814.4A CN202110872814A CN113580253A CN 113580253 A CN113580253 A CN 113580253A CN 202110872814 A CN202110872814 A CN 202110872814A CN 113580253 A CN113580253 A CN 113580253A
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China
Prior art keywords
parts
corrugated pipe
semi
high temperature
strong acid
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CN202110872814.4A
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刘俊峰
汪进南
潘学东
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Anhui Glant New Material Co Ltd
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Anhui Glant New Material Co Ltd
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Priority to CN202110872814.4A priority Critical patent/CN113580253A/en
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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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1845—Means for removing cut-out material or waste by non mechanical means
    • B26D7/1863—Means for removing cut-out material or waste by non mechanical means by suction
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/27—Cleaning; Purging; Avoiding contamination
    • B29C48/274—Cleaning; Purging; Avoiding contamination of the extruded articles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/0862—Nickel
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/18—Applications used for pipes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/062—HDPE
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2312/00—Crosslinking
    • C08L2312/06—Crosslinking by radiation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Forests & Forestry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Cleaning In General (AREA)

Abstract

The invention discloses a corrugated pipe with strong acid and alkali corrosion resistance and high temperature resistance and a processing method thereof. The invention also discloses a processing device, which can meet the requirements of contacting and supporting the outer surfaces of corrugated pipes with different diameters through the liftable lifting shell and the wheel seat with adjustable intervals on the lifting shell, and can drive the corrugated pipes to rotate at the same time.

Description

Corrugated pipe resistant to strong acid and alkali corrosion and high temperature and processing method thereof
Technical Field
The invention relates to the technical field of corrugated pipe processing, in particular to a corrugated pipe resistant to strong acid and alkali corrosion and high temperature and a processing method thereof.
Background
The corrugated pipe is a tubular elastic sensitive element which is formed by connecting foldable corrugated sheets along the folding and stretching direction. The corrugated pipe has wide application in instruments and meters, and is mainly used as a measuring element of a pressure measuring instrument to convert pressure into displacement or force. The corrugated pipe has thin pipe wall and high sensitivity, and the measurement range is from tens of Pa to tens of MPa.
The heat resistance and the strong acid and alkali corrosion resistance of current bellows are all not good, need in the bellows production process in time cool off the design to the bellows after extruding simultaneously, and current spraying equipment can't guarantee to spray comprehensively of bellows, when the shower head appears blockking, can lead to spraying the effect worse simultaneously, and the sweeps of cutting position is difficult to the clearance through conventional equipment of blowing during the bellows cutting.
Disclosure of Invention
The invention aims to provide a corrugated pipe resistant to strong acid and alkali corrosion and high temperature and a processing method thereof, and solves the following technical problems: (1) the technical problem that the corrugated pipe in the prior art is poor in heat resistance and strong acid and alkali corrosion resistance is solved; (2) the technical problems that in the prior art, a corrugated pipe needs to be cooled and shaped in time after being extruded, the conventional spraying equipment cannot guarantee the comprehensive spraying of the corrugated pipe, and the spraying effect is poorer when a spraying head is blocked are solved; (3) the technical problem of the sweeps of cutting position is difficult to the clearance through conventional equipment of blowing during cutting of bellows among the prior art is solved, and the inner structure of corresponding equipment that sprays is difficult to change simultaneously and the technical problem of maintenance.
The purpose of the invention can be realized by the following technical scheme:
a processing method of a corrugated pipe resistant to strong acid, alkali corrosion and high temperature comprises the following steps:
the method comprises the following steps: adding polyethylene resin, ethylene glycol, phenolphthalein, a catalyst and an antioxidant into a reaction kettle, stirring, heating for esterification, adding a stabilizer into the obtained product after the esterification is finished, carrying out polycondensation reaction under vacuum, discharging, cooling and granulating after the polycondensation is finished to obtain modified master batch;
step two: putting modified master batch, nano silicon carbide, processing aids, epoxy resin, organic silicon resin, carbon powder, nickel powder, irradiation crosslinking accelerant, modified anti-aging flame-retardant blend, weather-resistant agent and plasticizer into a high-speed mixer for mixing, putting the mixture into a double-screw extruder for melt extrusion to obtain a semi-finished corrugated pipe, conveying the semi-finished corrugated pipe into a guide channel between an upper cleaning chamber and a lower cleaning chamber, driving a first lead screw to rotate by an output shaft of an adjusting motor, driving two adjusting seats to move in the opposite direction or the reverse direction by the first lead screw, driving two supporting wheels to move in the opposite direction or the reverse direction by two wheel seats, simultaneously lifting a cylinder piston rod to push a lifting shell to ascend, further enabling the supporting wheels to be in contact with the surface of the semi-finished corrugated pipe, driving the supporting wheels to rotate by an output shaft of a rotating motor, driving the semi-finished corrugated pipe to rotate by the supporting wheels, pumping water in a water tank by a water pump, and conveying the water to an atomization nozzle by a spiral winding pipe, an atomizing nozzle cools semi-finished corrugated pipes, cooling water on the surfaces of the semi-finished corrugated pipes in the cooling process enters a recovery box through a drainage tube to be collected, the semi-finished corrugated pipes after being cooled are conveyed into a cutting chamber, a cylinder piston rod is pushed laterally to push an arc-shaped plate, a dust suction wheel on the arc-shaped plate is contacted with the surfaces of the semi-finished corrugated pipes, a supporting wheel continues to drive the semi-finished corrugated pipes to rotate, a lifting cylinder piston rod drives a cutting motor to descend, a cutting disk descends, an output shaft of the cutting motor drives the cutting disk to rotate, the cutting disk is contacted with the surfaces of the semi-finished corrugated pipes and cuts the semi-finished corrugated pipes, the dust suction wheel attaches scraps at the cutting position in the cutting process to the surfaces in the rotating process of the semi-finished corrugated pipes, the dust suction wheel is driven to rotate in the rotating process of the semi-finished corrugated pipes, the scrapers scrape the scraps attached to the dust suction wheel, and the corrugated pipes with strong acid and alkali corrosion resistance and high temperature resistance are obtained after cutting, the semi-finished corrugated pipe with strong acid and alkali corrosion resistance and high temperature resistance is pushed into the outlet pipe channel by the subsequent conveyed semi-finished corrugated pipe, hot air is blown into the outlet pipe channel by the drying fan through the air pipe, and then the corrugated pipe with strong acid and alkali corrosion resistance and high temperature resistance in the outlet pipe channel is dried.
Further, in the step one, the catalyst is one of antimony-based, titanium-based and germanium-based catalysts, the stabilizer is one or more of phosphates and phosphites, and the antioxidant is one or more of phenols, amines, phosphites and sulfur-containing antioxidants.
Further, the irradiation crosslinking accelerator in the step two is prepared by adopting the following method: uniformly mixing N-ethyl methyl allylamine and phthalic anhydride, and then adding dimethylbenzene to obtain a premixed solution, wherein the molar ratio of the added N-ethyl methyl allylamine to the phthalic anhydride is 1: (2-3.5), in the premixed solution, the concentration of the N-ethyl methyl allylamine is 0.8-1.5 mol/L; adding a solid acid catalyst into the premixed solution, stirring and dispersing, stirring the premixed solution for 3-6h at the low temperature of-5 ℃, and then filtering, washing and drying a product to obtain the irradiation crosslinking accelerator.
Further, the modified anti-aging flame-retardant blend is prepared by the following method: taking 1-4 parts of nano kaolin, 3-5 parts of a potassium bicarbonate aqueous solution with the mass fraction of 22-38%, 1.3-1.6 parts of halloysite nanotubes with the characteristic parameter diameter of 40-100nm and the length of 4-12 mu m, 1.4-2 parts of graphene, 0.4-0.8 part of titanium dioxide, 0.4-0.9 part of laurylamine polyoxyethylene ether, 1-1.4 parts of length-diameter ratio of 10-14: 1, uniformly mixing wollastonite needle fibers, stirring in a 160-plus 190 ℃ superheated steam reaction kettle, carrying out a steaming reaction for 32-55min, carrying out vacuum microwave radiation at 440-plus 480 ℃ for 3-6h, then soaking in 95-120 parts of 35-40 mass percent sulfamic acid solution for vacuum moisture absorption treatment, heating to 70-85 ℃ after complete absorption, ultrasonically dispersing for 1-3h, stirring and dispersing for 2-5h, and taking suspended matters; performing microwave plasma etching treatment on the suspended matters for 20-35min, performing ultrasonic treatment on the suspended matters for 18-35min at 70-80 ℃ by using deionized water of 3-6% of potassium tripolyphosphate dispersion liquid by mass fraction, filtering the suspended matters on the upper layer by a screen of 120 meshes and 160 meshes, washing the suspended matters by distilled water, and drying the suspended matters in vacuum to obtain the modified anti-aging flame-retardant blend.
Furthermore, in the second step, the organic silicon resin is polymethyl silicon resin or polyethyl silicon resin, and the grain size of the nano silicon carbide is not more than 100 nm.
Further, in the first step, the polyethylene resin has a weight average molecular weight of 30000-400000 and a density of 0.94-0.98g/cm3The particle size of the carbon powder and the nickel powder is not more than 0.6mm, and the processing aid in the second step is one or more of an anti-ultraviolet agent, a heat stabilizer and an impact modifier.
Further, the feed additive is prepared from the following raw materials in parts by weight: 70-85 parts of polyethylene resin, 30-55 parts of ethylene glycol, 12-24 parts of phenolphthalein, 2-4 parts of irradiation crosslinking accelerator, 3-5 parts of modified anti-aging flame-retardant blend, 2-4 parts of weather-resistant agent, 1-3 parts of plasticizer, 1-3 parts of catalyst, 1-3 parts of antioxidant, 1-3 parts of stabilizer, 15-30 parts of nano silicon carbide, 1-2 parts of processing aid, 30-45 parts of epoxy resin, 20-35 parts of organic silicon resin, 4-10 parts of carbon powder and 5-12 parts of nickel powder.
Further, the processing equipment comprises an upper cleaning chamber and a lower cleaning chamber, the upper cleaning chamber and the lower cleaning chamber are arranged oppositely from top to bottom, two jacking cylinders are installed at the bottom of the inner cavity of the upper cleaning chamber, a lifting shell is installed at the end part of a piston rod of each jacking cylinder, two wheel seats are slidably installed on the lifting shell, supporting wheels are rotatably installed on the wheel seats, rotating motors are fixedly installed on the wheel seats, the rotating motors are connected with the supporting wheels in an output mode, a recovery box is arranged between the two jacking cylinders, a water tank is installed at the top of the inner wall of the upper cleaning chamber, a water pump is fixedly installed at the bottom of the water tank, a water pumping port of the water pump is communicated with the water tank, a spiral winding pipe is movably installed at a water outlet of the water pump and is wound on the outer wall of a guide channel, and a plurality of atomizing nozzles are installed at the contact positions of the spiral winding pipe and the guide channel, the atomizing nozzle penetrates through the guide channel, a plurality of drainage tubes are installed at the bottom of the guide channel, one ends of the drainage tubes, far away from the guide channel, are communicated with the recovery box, a cutting chamber is arranged on one side of the upper cleaning chamber and one side of the lower cleaning chamber, a lifting cylinder is fixedly installed at the top of the inner wall of the cutting chamber, a cutting motor is installed at the end part of a piston rod of the lifting cylinder, the cutting motor is fixed on the side wall of the cutting cover, a cutting disc is rotatably installed in the cutting cover, an output shaft of the cutting motor is connected with the cutting disc, two side-pushing cylinders are symmetrically installed on the outer walls of two sides of the cutting chamber, an arc plate is installed at the end part of the piston rod of the side-pushing cylinder, dust-absorbing wheels are rotatably installed on the upper side and the lower side of the arc plate, two scraping plates are fixedly installed on the arc plate, the two dust-absorbing wheels are in one-to-one correspondence with the two scraping plates, and the scraping plates are used for scraping waste scraps on the surface of the dust-absorbing wheels, cutting chamber inner wall fixed mounting has the exit tube passageway, exit tube passageway one end intercommunication cutting chamber lateral wall, cutting chamber outer wall top fixed mounting has the drying blower, the tuber pipe is installed to the drying blower air outlet, drying blower one end intercommunication exit tube passageway top is kept away from to the tuber pipe, the chip removal mouth has been seted up to the tuber pipe bottom.
Further, first lead screw is installed to the lift shell internal rotation, lift shell lateral wall fixed mounting has adjusting motor, the first lead screw of adjusting motor output shaft, first lead screw both ends flank of thread is the symmetry setting along the middle part, two regulation seats of first lead screw both ends threaded connection, two regulation seats and two wheel seat one-to-one, wheel seat fixed mounting is in adjusting a top.
Further, go up the purge chamber both sides and seted up two and go up the opening, two openings are seted up down to purge chamber both sides down, go up opening and two opening one-to-ones down on two, it is linked together with opening down to go up the opening.
Further, lower purge chamber bilateral symmetry is provided with two side bearers, fixed mounting has driving motor on the side bearer, driving motor output shaft connects the second lead screw, second lead screw threaded connection connecting plate, the purge chamber outer wall is connected to the connecting plate fixed connection, fixed mounting has two guide bars on the side bearer, connecting plate sliding connection guide bar.
The invention has the beneficial effects that:
(1) the invention relates to a corrugated pipe with strong acid and alkali corrosion resistance and high temperature resistance and a processing method thereof, wherein a phenolphthalein third monomer is introduced in the preparation process of a master batch, a flexible diethanol part in a polyester macromolecular chain is replaced by a rigid phenolphthalein group, so that a segment formed by connecting a rigid diacid monomer and the rigid phenolphthalein monomer is formed, the rigidity and the crystallization performance of the whole molecule are enhanced, the heat resistance and the strong acid and alkali corrosion resistance of the corrugated pipe are improved by adopting an irradiation crosslinking process, the adopted irradiation crosslinking agent takes phthalic anhydride as a synthetic raw material, a benzene ring structure is introduced, the melting point of a crosslinking accelerator is improved, the radiation resistance stability of the crosslinking accelerator is further improved, the corrugated pipe achieves better service performance and the service life is prolonged by adding raw materials such as nano silicon carbide, polyethylene resin, modified epoxy resin, carbon powder, nickel powder and the like, the maintenance cost is reduced, and the maximum decomposition temperature of the corrosion-resistant plastic particles is 290-298 ℃ according to GB 1035-70;
(2) conveying the semi-finished corrugated pipe into a guide channel between an upper cleaning chamber and a lower cleaning chamber, driving a first lead screw to rotate by an output shaft of an adjusting motor, driving two adjusting seats to move in opposite directions or in reverse directions by the first lead screw, driving two supporting wheels to move in opposite directions or in reverse directions by two wheel seats, simultaneously pushing up a cylinder piston rod to push a lifting shell to ascend, further enabling the supporting wheels to be in contact with the surface of the semi-finished corrugated pipe, driving the supporting wheels to rotate by an output shaft of a rotating motor, driving the semi-finished corrugated pipe to rotate by the supporting wheels, pumping water in a water tank by a water pump, conveying the water to an atomizing nozzle through a spiral winding pipe, cooling the semi-finished corrugated pipe by the atomizing nozzle, conveying the cooling water on the surface of the semi-finished corrugated pipe into a recovery box through a drainage pipe to be collected, and meeting the contact and support of the outer surfaces of corrugated pipes with different diameters through the liftable lifting shell and the arrangement of the wheel seats with adjustable intervals on the lifting shell, the corrugated pipe can be driven to rotate, efficient and comprehensive circumferential surface cleaning of the corrugated pipe in the guide channel can be guaranteed through the design of the guide channel, the spiral winding pipe and the atomizing nozzles, and the situation that the surface of the corrugated pipe cannot be cooled comprehensively due to the fact that part of the atomizing nozzles are blocked can be avoided by matching with the corresponding structural design of the driven corrugated pipe;
(3) after cooling, the semi-finished corrugated pipe is conveyed into a cutting chamber, a piston rod of a side push cylinder pushes an arc-shaped plate, a dust suction wheel on the arc-shaped plate is contacted with the surface of the semi-finished corrugated pipe, a support wheel continues to drive the semi-finished corrugated pipe to rotate, a piston rod of a lifting cylinder drives a cutting motor to descend, a cutting disc descends, an output shaft of the cutting motor drives the cutting disc to rotate, the cutting disc is contacted with the surface of the semi-finished corrugated pipe and performs cutting, the dust suction wheel attaches scraps at the cutting position in the cutting process to the surface in the rotation process of the semi-finished corrugated pipe, the dust suction wheel is driven to rotate in the rotation process of the semi-finished corrugated pipe, the scraps attached to the dust suction wheel are scraped by a scraper, the corrugated pipe resistant to strong acid, alkali and high temperature is obtained after cutting, the subsequently conveyed semi-finished corrugated pipe pushes the corrugated pipe resistant to the strong acid, alkali and high temperature, and high temperature resistant corrugated pipe is blown into an outlet pipe channel by a drying fan, further drying the corrugated pipe with strong acid and alkali corrosion resistance and high temperature resistance in the outlet pipe channel, and through two arc-shaped plates with adjustable space in the cutting chamber and two dust suction wheels which are rotationally designed on the arc-shaped plates, can effectively clean the scraps generated at the cutting positions of the corrugated pipes with different diameters by adhering the scraps on the surface, meanwhile, the design of the scraper is matched, the scraps on the dust absorption wheel can be scraped, the effect of continuously attaching the scraps to the dust absorption wheel is ensured, through the design of the upper cleaning chamber and the lower cleaning chamber with adjustable space, the output shaft of the driving motor drives the second lead screw to rotate, the second lead screw drives the connecting plate to ascend, the connecting plate drives the upper cleaning chamber to ascend, one end of the spiral winding pipe is pulled out from the water outlet of the water pump, the upper cleaning chamber and the lower cleaning chamber are separated, and the structure between the upper cleaning chamber and the lower cleaning chamber can be maintained and replaced correspondingly.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a schematic view of the construction of the processing apparatus of the present invention;
FIG. 3 is a schematic illustration of the sideframe construction of the present invention;
FIG. 4 is an internal structural view of an upper cleaning chamber and a lower cleaning chamber of the present invention;
FIG. 5 is an internal structural view of the lift housing of the present invention;
FIG. 6 is an installation view of the support wheel of the present invention;
FIG. 7 is a side view of the guide channel of the present invention;
FIG. 8 is an internal structural view of the cutting chamber of the present invention;
fig. 9 is a side view of an arcuate plate of the present invention.
In the figure: 100. an upper cleaning chamber; 101. a lower cleaning chamber; 102. jacking a cylinder; 103. a lifting shell; 104. adjusting the motor; 105. a first lead screw; 106. an adjusting seat; 107. a wheel seat; 1071. a rotating electric machine; 108. a support wheel; 109. an upper port; 110. a lower port; 111. a water tank; 112. a water pump; 113. a helically wound tube; 114. a guide channel; 115. a drainage tube; 116. an atomizing spray head; 117. a recycling bin; 118. a side frame; 119. a second lead screw; 120. a drive motor; 121. a connecting plate; 122. a guide bar; 200. a cutting chamber; 201. a lifting cylinder; 202. cutting the motor; 203. cutting the cover; 204. cutting the disc; 205. a side push cylinder; 206. an arc-shaped plate; 207. a dust collection wheel; 208. a squeegee; 209. an outlet pipe channel; 210. drying the fan; 211. and (7) an air pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Please refer to FIGS. 1-9
Example 1
The corrugated pipe resistant to strong acid, alkali corrosion and high temperature is prepared from the following raw materials in parts by weight: 70 parts of polyethylene resin, 30 parts of ethylene glycol, 12 parts of phenolphthalein, 2 parts of irradiation crosslinking accelerator, 3 parts of modified anti-aging flame-retardant blend, 2 parts of weather-resistant agent, 1 part of plasticizer, 1 part of catalyst, 1 part of antioxidant, 1 part of stabilizer, 15 parts of nano silicon carbide, 1 part of processing aid, 30 parts of epoxy resin, 20 parts of organic silicon resin, 4 parts of carbon powder and 5 parts of nickel powder.
A processing method of a corrugated pipe resistant to strong acid, alkali corrosion and high temperature comprises the following steps:
the method comprises the following steps: adding polyethylene resin, ethylene glycol, phenolphthalein, a catalyst and an antioxidant into a reaction kettle, stirring, heating for esterification, adding a stabilizer into the obtained product after the esterification is finished, carrying out polycondensation reaction under vacuum, discharging, cooling and granulating after the polycondensation is finished to obtain modified master batch;
step two: putting modified master batch, nano silicon carbide, processing aids, epoxy resin, organic silicon resin, carbon powder, nickel powder, irradiation crosslinking accelerant, modified anti-aging flame-retardant blend, weather-resistant agent and plasticizer into a high-speed mixer for mixing, putting the mixture into a double-screw extruder for melt extrusion to obtain a semi-finished corrugated pipe, conveying the semi-finished corrugated pipe into a guide channel 114 between an upper cleaning chamber 100 and a lower cleaning chamber 101, driving a first lead screw 105 to rotate by an output shaft of an adjusting motor 104, driving two adjusting seats 106 to move oppositely or reversely by the first lead screw 105, driving two supporting wheels 108 to move oppositely or reversely by two wheel seats 107, simultaneously driving a piston rod of a lifting cylinder 102 to push a lifting shell 103 to lift, further enabling the supporting wheels 108 to be in contact with the surface of the semi-finished corrugated pipe, driving the supporting wheels 108 to rotate by an output shaft of a rotating motor 1071, driving the semi-finished corrugated pipe to rotate by the supporting wheels 108, the water pump 112 pumps water in the water tank 111 and conveys the water to the atomizing nozzle 116 through the spiral winding pipe 113, the atomizing nozzle 116 cools the semi-finished corrugated pipe, cooling water on the surface of the semi-finished corrugated pipe enters the recovery tank 117 through the drainage pipe 115 in the cooling process and is collected, the semi-finished corrugated pipe after being cooled is conveyed into the cutting chamber 200, the piston rod of the side pushing cylinder 205 pushes the arc-shaped plate 206, the dust suction wheel 207 on the arc-shaped plate 206 is in contact with the surface of the semi-finished corrugated pipe, the supporting wheel 108 continues to drive the semi-finished corrugated pipe to rotate, the piston rod of the lifting cylinder 201 drives the cutting motor 202 to descend, the cutting disc 204 descends, the output shaft of the cutting motor 202 drives the cutting disc 204 to rotate, the cutting disc 204 is in contact with the surface of the semi-finished corrugated pipe and performs cutting, the dust suction wheel 207 attaches waste scraps at the cutting position in the cutting process to the surface in the rotation process of the semi-finished corrugated pipe, and drives the dust suction wheel 207 to rotate in the rotation process of the semi-finished corrugated pipe, scraping plate 208 scrapes off the attached sweeps on dust absorption wheel 207, obtains strong acid and alkali corrosion and high temperature resistant bellows after the cutting, and the semi-manufactured goods bellows of follow-up transport will be able to bear or endure in strong acid and alkali corrosion and high temperature resistant bellows propelling movement to exit tube passageway 209, and drying fan 210 will be hot-blast through tuber pipe 211 in the pipe passageway 209 of coming into, and then carries out drying process to the strong acid and alkali corrosion resistant and high temperature resistant bellows in the exit tube passageway 209.
Specifically, in the first step, the catalyst is an antimony catalyst, the stabilizer is phosphate, and the antioxidant is a phenol antioxidant.
The irradiation crosslinking accelerant in the second step is prepared by the following method: uniformly mixing N-ethyl methyl allylamine and phthalic anhydride, and then adding dimethylbenzene to obtain a premixed solution, wherein the molar ratio of the added N-ethyl methyl allylamine to the phthalic anhydride is 1: 2, in the premixed solution, the concentration of the N-ethyl methyl allylamine is 0.8 mol/L; adding a solid acid catalyst into the premixed solution, stirring and dispersing, stirring the premixed solution for 3 hours at the low temperature of-5 ℃, and then filtering, washing and drying a product to obtain the irradiation crosslinking accelerator.
The modified anti-aging flame-retardant blend is prepared by the following method: taking 1 part of nano kaolin, 3 parts of a potassium bicarbonate aqueous solution with the mass fraction of 22%, 1.3 parts of halloysite nanotubes with the characteristic parameter diameter of 40nm and the length of 4 mu m, 1.4 parts of graphene, 0.4 part of titanium dioxide, 0.4 part of laurylamine polyoxyethylene ether, and 1 part of length-diameter ratio of 10: 1, uniformly mixing needle-shaped wollastonite fibers, stirring in a superheated steam reaction kettle at 160 ℃, carrying out a steaming reaction for 32min, carrying out vacuum microwave radiation for 3h at 440 ℃, then soaking in 95 parts of 35% by mass sulfamic acid solution for vacuum moisture absorption treatment, heating to 70 ℃ after complete absorption, carrying out ultrasonic dispersion for 1h, stirring and dispersing for 2h, and taking suspended matters; and (3) performing microwave plasma etching treatment on the suspended matters for 20min, performing ultrasonic treatment for 18min at 70 ℃ by using deionized water of a potassium tripolyphosphate dispersion liquid with the mass fraction of 3%, filtering the upper-layer suspended matters by using a 120-mesh sieve, washing the upper-layer suspended matters by using distilled water, and drying the upper-layer suspended matters in vacuum to obtain the modified anti-aging flame-retardant blend.
In the second step, the organic silicon resin is polymethyl silicon resin, and the grain size of the nano silicon carbide is not more than 100 nm.
In the first step, the weight average molecular weight of the polyethylene resin is 30000, and the density of the polyethylene resin is 0.94g/cm3The particle size of the carbon powder and the nickel powder is not more than 0.6mm, and the processing aid in the second step is an anti-ultraviolet agent.
The maximum decomposition temperature of the strong acid and alkali corrosion resistant and high temperature resistant corrugated pipe of example 1 is 315 ℃.
Example 2
The corrugated pipe resistant to strong acid, alkali corrosion and high temperature is prepared from the following raw materials in parts by weight: 85 parts of polyethylene resin, 55 parts of ethylene glycol, 24 parts of phenolphthalein, 4 parts of irradiation crosslinking accelerator, 5 parts of modified anti-aging flame-retardant blend, 4 parts of weather-resistant agent, 3 parts of plasticizer, 3 parts of catalyst, 3 parts of antioxidant, 3 parts of stabilizer, 30 parts of nano silicon carbide, 2 parts of processing aid, 45 parts of epoxy resin, 35 parts of organic silicon resin, 10 parts of carbon powder and 12 parts of nickel powder.
In the first step, the catalyst is a germanium catalyst, the stabilizer is phosphite ester, and the antioxidant is a sulfur-containing antioxidant.
The irradiation crosslinking accelerant in the second step is prepared by the following method: uniformly mixing N-ethyl methyl allylamine and phthalic anhydride, and then adding dimethylbenzene to obtain a premixed solution, wherein the molar ratio of the added N-ethyl methyl allylamine to the phthalic anhydride is 1: 3.5, in the premixed solution, the concentration of the N-ethyl methyl allylamine is 1.5 mol/L; adding a solid acid catalyst into the premixed solution, stirring and dispersing, stirring the premixed solution for 6 hours at the low temperature of-5 ℃, and then filtering, washing and drying a product to obtain the irradiation crosslinking accelerator.
The modified anti-aging flame-retardant blend is prepared by the following method: taking 4 parts of nano kaolin, 5 parts of a 38% potassium bicarbonate aqueous solution by mass, 1.6 parts of halloysite nanotubes with the characteristic parameter diameter of 100nm and the length of 12 mu m, 2 parts of graphene, 0.8 part of titanium dioxide, 0.9 part of laurylamine polyoxyethylene ether, 1.4 parts of length-diameter ratio of 14: 1, uniformly mixing needle-shaped wollastonite fibers, stirring in a superheated steam reaction kettle at 190 ℃, carrying out a steaming reaction for 55min, carrying out vacuum microwave radiation at 480 ℃ for 6h, then soaking in 120 parts of sulfamic acid solution with the mass fraction of 40%, carrying out vacuum moisture absorption treatment, heating to 85 ℃ after complete absorption, carrying out ultrasonic dispersion for 3h, stirring and dispersing for 5h, and taking suspended matters; and (3) performing microwave plasma etching treatment on the suspended matters for 35min, performing ultrasonic treatment on the suspended matters for 35min at 80 ℃ by using deionized water with 6% of potassium tripolyphosphate dispersion liquid by mass fraction, taking the upper-layer suspended matters, filtering the upper-layer suspended matters by a 160-mesh sieve, washing the upper-layer suspended matters by distilled water, and drying the upper-layer suspended matters in vacuum to obtain the modified anti-aging flame-retardant blend.
In the second step, the organic silicon resin is polyethyl silicon resin, and the grain size of the nano silicon carbide is not more than 100 nm.
In the first step, the weight average molecular weight of the polyethylene resin is 400000, and the density of the polyethylene resin is 0.98g/cm3The particle size of the carbon powder and the nickel powder is not more than 0.6mm, and the processing aid in the second step is an impact modifier.
The maximum decomposition temperature of the strong acid and alkali corrosion resistant and high temperature resistant corrugated pipe of example 2 is 345 ℃.
The processing equipment comprises an upper cleaning chamber 100 and a lower cleaning chamber 101, wherein the upper cleaning chamber 100 and the lower cleaning chamber 101 are arranged up and down oppositely, two jacking cylinders 102 are arranged at the bottom of an inner cavity of the upper cleaning chamber 100, a lifting shell 103 is arranged at the end part of a piston rod of each jacking cylinder 102, two wheel seats 107 are arranged on each lifting shell 103 in a sliding way, supporting wheels 108 are arranged on each wheel seat 107 in a rotating way, a rotating motor 1071 is fixedly arranged on each wheel seat 107, an output shaft of the rotating motor 1071 is connected with the supporting wheels 108, a recovery box 117 is arranged between the two jacking cylinders 102, a water tank 111 is arranged at the top of the inner wall of the upper cleaning chamber 100, a water pump 112 is fixedly arranged at the bottom of the water tank 111, a water pumping port of the water pump 112 is communicated with the water tank 111, a spiral winding pipe 113 is movably arranged at a water outlet of the water pump 112, the spiral winding pipe 113 is wound on the outer wall of a guide channel 114, and a plurality of atomizing nozzles 116 are arranged at the contact positions of the spiral winding pipe 113 and the guide channel 114, the atomizing nozzle 116 penetrates through the guide channel 114, a plurality of drainage tubes 115 are installed at the bottom of the guide channel 114, one ends of the drainage tubes 115, which are far away from the guide channel 114, are communicated with the recovery box 117, one sides of the upper cleaning chamber 100 and the lower cleaning chamber 101 are provided with a cutting chamber 200, the top of the inner wall of the cutting chamber 200 is fixedly provided with a lifting cylinder 201, the end part of a piston rod of the lifting cylinder 201 is provided with a cutting motor 202, the cutting motor 202 is fixed on the side wall of a cutting cover 203, a cutting disc 204 is rotatably installed in the cutting cover 203, the output shaft of the cutting motor 202 is connected with the cutting disc 204, two side-pushing cylinders 205 are symmetrically installed on the outer walls of two sides of the cutting chamber 200, the end part of a piston rod of the side-pushing cylinder 205 is provided with an arc-shaped plate 206, dust-absorbing wheels 207 are rotatably installed on the upper side and the lower side of the arc-shaped plate 206, two dust-absorbing wheels 207 are in one-to-one correspondence with the two dust-absorbing wheels 208, and the dust-scraping plates 208 are used for scraping waste scraps on the surface of the dust-absorbing wheels 207, cutting chamber 200 inner wall fixed mounting has exit tube passageway 209, exit tube passageway 209 one end intercommunication cutting chamber 200 lateral wall, cutting chamber 200 outer wall top fixed mounting has drying fan 210, drying fan 210 air outlet installs tuber pipe 211, drying fan 210 one end intercommunication exit tube passageway 209 top is kept away from to tuber pipe 211, first lead screw 105 is installed to lift shell 103 internal rotation, lift shell 103 lateral wall fixed mounting has adjusting motor 104, the first lead screw 105 of adjusting motor 104 output shaft, first lead screw 105 both ends screw thread face is the symmetry setting along the middle part, two regulation seats 106 of first lead screw 105 both ends threaded connection, two regulation seats 106 and two wheel seats 107 one-to-one, wheel seat 107 fixed mounting is in regulation seat 106 tops. Through the setting of the lifting shell 103 of liftable and the wheel seat 107 of adjustable interval on the lifting shell 103, can satisfy the outer surface contact and the support to different diameter bellows, and can drive the bellows rotation simultaneously, design through direction passageway 114 and spiral winding pipe 113 and atomizer 116, guarantee that the bellows can obtain high-efficient and comprehensive global washing in direction passageway 114, the corresponding structural design of bellows can be driven in the cooperation simultaneously, can avoid partly atomizer 116 to appear blockking, and cause the unable circumstances on cooling bellows surface comprehensively.
Go up purge chamber 100 both sides and seted up two and go up through-hole 109, two lower through-holes 110 have been seted up to purge chamber 101 both sides down, through-hole 110 one-to-one under two go up through-hole 109 and two, it is linked together with lower through-hole 110 to go up through the design of last purge chamber 100 of adjustable interval and lower purge chamber 101, it rotates to drive second lead screw 119 to pass through driving motor 120 output shaft, second lead screw 119 drives connecting plate 121 and rises, purge chamber 100 rises in the connecting plate 121 drive, spiral winding pipe 113 one end is extracted from water pump 112 delivery port, accomplish the separation of last purge chamber 100 and lower purge chamber 101 promptly, can carry out corresponding maintenance and change to the structure between last purge chamber 100 and the lower purge chamber 101.
Two side frames 118 are symmetrically arranged on two sides of the lower cleaning chamber 101, a driving motor 120 is fixedly mounted on each side frame 118, an output shaft of the driving motor 120 is connected with a second lead screw 119, the second lead screw 119 is in threaded connection with a connecting plate 121, the connecting plate 121 is fixedly connected with the outer wall of the upper cleaning chamber 100, two guide rods 122 are fixedly mounted on each side frame 118, the connecting plate 121 is in sliding connection with the guide rods 122, two arc-shaped plates 206 with adjustable intervals in the cutting chamber 200 and two dust suction wheels 207 in rotary design on the arc-shaped plates 206 can be used for attaching scraps generated at the cutting positions of corrugated pipes with different diameters to the surface to perform effective cleaning, the design of the scraping plates 208 is matched at the same time, the scraps on the dust suction wheels 207 can be scraped, and the effect that the dust suction wheels 207 continuously attach the scraps is ensured.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (5)

1. The processing method of the corrugated pipe with strong acid and alkali corrosion resistance and high temperature resistance is characterized by comprising the following steps of:
the method comprises the following steps: adding polyethylene resin, ethylene glycol, phenolphthalein, a catalyst and an antioxidant into a reaction kettle, stirring, heating for esterification, adding a stabilizer into the obtained product after the esterification is finished, carrying out polycondensation reaction under vacuum, discharging, cooling and granulating after the polycondensation is finished to obtain modified master batch;
step two: putting the modified master batch, the nano silicon carbide, the processing aid, the epoxy resin, the organic silicon resin, the carbon powder, the nickel powder, the irradiation crosslinking accelerator, the modified anti-aging flame-retardant blend, the weather-resistant agent and the plasticizer into a high-speed mixer for mixing, putting the mixture into a double-screw extruder for melt extrusion to obtain a semi-finished corrugated pipe, conveying the semi-finished corrugated pipe to processing equipment for cutting treatment, and preparing the corrugated pipe with strong acid, alkali corrosion resistance and high temperature resistance.
2. The processing method of the strong acid and alkali corrosion resistant and high temperature resistant corrugated pipe as claimed in claim 1, wherein the modified anti-aging flame retardant blend is prepared by the following method: taking 1-4 parts of nano kaolin, 3-5 parts of a potassium bicarbonate aqueous solution with the mass fraction of 22-38%, 1.3-1.6 parts of halloysite nanotubes with the characteristic parameter diameter of 40-100nm and the length of 4-12 mu m, 1.4-2 parts of graphene, 0.4-0.8 part of titanium dioxide, 0.4-0.9 part of laurylamine polyoxyethylene ether, 1-1.4 parts of length-diameter ratio of 10-14: 1, uniformly mixing, stirring in a 160-plus-190 ℃ superheated steam reaction kettle, carrying out a steaming reaction for 32-55min, carrying out vacuum microwave radiation for 3-6h at 440-plus-480 ℃, then soaking in 95-120 parts by weight of 35-40% sulfamic acid solution for vacuum moisture absorption treatment, heating to 70-85 ℃ after complete absorption, ultrasonically dispersing for 1-3h, stirring and dispersing for 2-5h, taking suspended matters, carrying out microwave plasma etching treatment on the suspended matters for 20-35min, carrying out ultrasonic treatment for 18-35min at 70-80 ℃ by using deionized water of 3-6% by weight of potassium tripolyphosphate dispersion liquid, taking upper suspended matters, filtering by 120-plus-160 meshes, washing by distilled water, and drying in vacuum to obtain the modified anti-aging flame-retardant blend.
3. The method for processing the bellows resisting the strong acid, the strong alkali and the high temperature according to claim 1, wherein the silicone resin in the second step is polymethyl silicone resin or polyethyl silicone resin, and the grain size of the nano silicon carbide is not more than 100 nm.
4. The processing method of the corrugated pipe with strong acid, alkali corrosion resistance and high temperature resistance according to claim 1, wherein the working process of the processing equipment is as follows:
conveying a semi-finished corrugated pipe into a guide channel (114) between an upper cleaning chamber (100) and a lower cleaning chamber (101), wherein a support wheel (108) is in contact with the surface of the semi-finished corrugated pipe, the support wheel (108) drives the semi-finished corrugated pipe to rotate, an atomizing nozzle (116) cools the semi-finished corrugated pipe, cooling water on the surface of the semi-finished corrugated pipe in the cooling process enters a recovery box (117) through a drainage tube (115) to be collected, the cooled semi-finished corrugated pipe is conveyed into a cutting chamber (200), a piston rod of a side pushing cylinder (205) pushes an arc-shaped plate (206), a dust suction wheel (207) on the arc-shaped plate (206) is in contact with the surface of the semi-finished corrugated pipe, the support wheel (108) continues to drive the semi-finished corrugated pipe to rotate, a cutting disc (204) is in contact with the surface of the semi-finished corrugated pipe to cut, and waste scraps at the cutting position in the cutting process are attached to the surface by the dust suction wheel (207) in the rotating process of the semi-finished corrugated pipe, scraping plate (208) strikes off the adnexed sweeps on dust absorption wheel (207), obtains strong acid and alkali corrosion and high temperature resistant bellows after the cutting, and the semi-manufactured goods bellows of follow-up transport will be able to bear or endure in strong acid and alkali corrosion and the bellows propelling movement of high temperature resistant to exit tube passageway (209), and stoving fan (210) will be hot-blast through tuber pipe (211) in the tube passageway (209), and then carry out drying process to the strong acid and alkali corrosion resistant and high temperature resistant bellows in the tube passageway (209).
5. The corrugated pipe with strong acid and alkali corrosion resistance and high temperature resistance based on the machining method of the corrugated pipe with strong acid and alkali corrosion resistance and high temperature resistance is characterized by being prepared from the following raw materials in parts by weight: 70-85 parts of polyethylene resin, 30-55 parts of ethylene glycol, 12-24 parts of phenolphthalein, 2-4 parts of irradiation crosslinking accelerator, 3-5 parts of modified anti-aging flame-retardant blend, 2-4 parts of weather-resistant agent, 1-3 parts of plasticizer, 1-3 parts of catalyst, 1-3 parts of antioxidant, 1-3 parts of stabilizer, 15-30 parts of nano silicon carbide, 1-2 parts of processing aid, 30-45 parts of epoxy resin, 20-35 parts of organic silicon resin, 4-10 parts of carbon powder and 5-12 parts of nickel powder.
CN202110872814.4A 2021-07-30 2021-07-30 Corrugated pipe resistant to strong acid and alkali corrosion and high temperature and processing method thereof Pending CN113580253A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106674499A (en) * 2016-12-06 2017-05-17 哈尔滨工业大学无锡新材料研究院 Rigid polyester engineering plastic with high smelting point and high glass-transition temperature and preparation method thereof
CN106810835A (en) * 2017-02-13 2017-06-09 肇庆汇展塑料科技有限公司 A kind of heat-and corrosion-resistant engineering plastics preparation method
CN110802847A (en) * 2019-11-04 2020-02-18 安徽杰蓝特新材料有限公司 Processing device for PE solid-wall pipe
CN111944282A (en) * 2020-08-25 2020-11-17 界首市鸿鑫塑业有限公司 Corrosion-resistant plastic particle and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106674499A (en) * 2016-12-06 2017-05-17 哈尔滨工业大学无锡新材料研究院 Rigid polyester engineering plastic with high smelting point and high glass-transition temperature and preparation method thereof
CN106810835A (en) * 2017-02-13 2017-06-09 肇庆汇展塑料科技有限公司 A kind of heat-and corrosion-resistant engineering plastics preparation method
CN110802847A (en) * 2019-11-04 2020-02-18 安徽杰蓝特新材料有限公司 Processing device for PE solid-wall pipe
CN111944282A (en) * 2020-08-25 2020-11-17 界首市鸿鑫塑业有限公司 Corrosion-resistant plastic particle and preparation method thereof

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