CN115895081A - Preparation process of high-performance corrugated pipe - Google Patents
Preparation process of high-performance corrugated pipe Download PDFInfo
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- CN115895081A CN115895081A CN202211311024.XA CN202211311024A CN115895081A CN 115895081 A CN115895081 A CN 115895081A CN 202211311024 A CN202211311024 A CN 202211311024A CN 115895081 A CN115895081 A CN 115895081A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 34
- 238000003756 stirring Methods 0.000 claims abstract description 111
- 239000000463 material Substances 0.000 claims abstract description 46
- 238000002156 mixing Methods 0.000 claims abstract description 46
- 229920003023 plastic Polymers 0.000 claims abstract description 38
- 239000004033 plastic Substances 0.000 claims abstract description 38
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 37
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 36
- 239000008187 granular material Substances 0.000 claims abstract description 33
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 33
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 33
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 28
- 238000001125 extrusion Methods 0.000 claims abstract description 23
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 22
- 238000005520 cutting process Methods 0.000 claims abstract description 12
- 238000005303 weighing Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 11
- -1 polypropylene Polymers 0.000 claims description 64
- 239000004743 Polypropylene Substances 0.000 claims description 61
- 229920001155 polypropylene Polymers 0.000 claims description 61
- 239000002245 particle Substances 0.000 claims description 37
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 36
- 229920002943 EPDM rubber Polymers 0.000 claims description 22
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 22
- 238000007790 scraping Methods 0.000 claims description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 21
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 20
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 19
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 19
- QUAMTGJKVDWJEQ-UHFFFAOYSA-N octabenzone Chemical compound OC1=CC(OCCCCCCCC)=CC=C1C(=O)C1=CC=CC=C1 QUAMTGJKVDWJEQ-UHFFFAOYSA-N 0.000 claims description 18
- 230000004048 modification Effects 0.000 claims description 12
- 238000012986 modification Methods 0.000 claims description 12
- 239000007822 coupling agent Substances 0.000 claims description 11
- 239000004793 Polystyrene Substances 0.000 claims description 10
- 229920002223 polystyrene Polymers 0.000 claims description 10
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 239000012758 reinforcing additive Substances 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 abstract 1
- 235000006708 antioxidants Nutrition 0.000 description 31
- 239000000203 mixture Substances 0.000 description 17
- 239000002994 raw material Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 2
- 239000002041 carbon nanotube Substances 0.000 description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000004595 color masterbatch Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Abstract
The application discloses high performance bellows preparation technology relates to bellows technical field, including the batching: weighing high-density polyethylene, functional plastic, antioxidant and reinforcing aid for later use; mixing materials: stirring and mixing the weighed high-density polyethylene, the functional plastic, the antioxidant and the reinforcing auxiliary agent in a stirrer for 20-30 minutes to obtain a mixed material; and (3) extruding and granulating: conveying the mixed material to a first double-screw extruder by using a dragon conveying pipeline, mixing, extruding and granulating to obtain granules; extrusion molding: injecting the granules into a hopper of a pipe extruder, and cooling and cutting the granules after extrusion molding to obtain a high-performance corrugated pipe; in the invention, the functional plastic is added into the high-density polyethylene, so that the comprehensive performance of the high-density polyethylene corrugated pipe is improved, particularly the impact resistance, the ring rigidity and the ring flexibility of the corrugated pipe are greatly improved, and meanwhile, the temperature resistance and the flame retardance of the corrugated pipe can be improved by adding the functional plastic, so that the application field is expanded.
Description
Technical Field
The application relates to the technical field of corrugated pipes, in particular to a preparation process of a high-performance corrugated pipe.
Background
The corrugated pipe is a circular section, the outer circumference of the corrugated pipe is in a corrugated shape, the surface of the outer circumference of the corrugated pipe is uneven, the corrugated pipe is widely applied to industries such as petrifaction, instruments, spaceflight, chemical engineering, electric power, cement, metallurgy and the like, and the corrugated pipe has excellent characteristics of corrosion resistance, wear resistance, flexibility and the like.
Chinese patent CN109880216B discloses a HDPE double-wall corrugated pipe and a production process thereof, wherein the double-wall corrugated pipe comprises the following components in parts by weight, HDPE, polypropylene, talcum powder, antistatic master batch, impact-resistant modified master batch, a coupling agent, ethylene propylene diene monomer, a carbon nano tube and a color master batch. The preparation method comprises the following steps: step 1: weighing the raw materials according to the weight parts, and then uniformly stirring and mixing to obtain a raw material mixture; step 2: melting the raw material mixture, extruding the raw material mixture by a double-screw extruder, and forming the raw material mixture by a die to obtain an initial product; and step 3: after the initial product is pulled up, cutting the initial product according to the specification to obtain an intermediate product; and 4, step 4: and flaring the intermediate product to obtain the double-wall corrugated pipe. The defects are overcome by adding polypropylene, impact-resistant modified master batches, ethylene propylene diene monomer and carbon nano tubes, and the ring stiffness and the creep resistance of the corrugated pipe are enhanced.
Chinese patent CN106893133A discloses a preparation method of a high temperature resistant polyethylene corrugated pipe, which is prepared from the following raw materials in parts by weight: 260-280 parts of high-density polyethylene, 90-110 parts of block copolymer polypropylene, 40-50 parts of polyolefin resin, 10-15 parts of talcum powder, 5-8 parts of butyl acrylate, 8-12 parts of methyl methacrylate, 2-3 parts of potassium persulfate, 60-70 parts of nylon 61060 and 20-25 parts of methacrylic acid. The corrugated pipe manufactured by the preparation method of the high-temperature resistant polyethylene corrugated pipe can be normally used without deformation in the environment with the temperature of 70 ℃ at most, so that the application field of the polyethylene corrugated pipe is greatly expanded, and the corrugated pipe can be normally used in occasions with higher temperature. The corrugated pipe is manufactured by matching common raw materials, and the manufacturing process is simple, so that the price is reasonable.
At present, the prior corrugated pipe generally has the following defects in the production and manufacturing process: when the existing corrugated pipe is produced and processed, the rigidity and the shock resistance of the existing corrugated pipe are poor due to the characteristic of high-density polyethylene, and the existing corrugated pipe is easy to deform, crack and the like after being used for a long time.
Therefore, the invention provides a preparation process of a high-performance corrugated pipe aiming at the problems.
Disclosure of Invention
In view of this, the present application provides a manufacturing process of a high-performance corrugated pipe to solve the above technical problems.
In order to achieve the above purpose, the present application provides the following technical solutions:
a preparation process of a high-performance corrugated pipe comprises the following steps:
step one, batching: respectively weighing 100 parts by weight of high-density polyethylene, 10-20 parts by weight of functional plastic, 0.1-2.0 parts by weight of antioxidant and 0.1-2.0 parts by weight of reinforcing additive for later use;
step two, mixing materials: stirring and mixing the high-density polyethylene, the functional plastic, the antioxidant and the reinforcing auxiliary agent weighed in the step one in a stirrer for 20-30 minutes to obtain a mixed material;
step three, extruding and granulating: conveying the mixed material obtained in the step two to a first double-screw extruder by using a dragon conveying pipeline, mixing, extruding and granulating to obtain granules;
step four, extrusion forming: and (3) injecting the granules obtained in the third step into a hopper of a pipe extruder, and cooling and cutting the granules after extrusion molding to obtain the high-performance corrugated pipe.
Further, the functional plastic comprises the following components in a mass ratio of 10: (1-2) polystyrene and nano-silica-modified polypropylene. The functional plastic consisting of polystyrene and nano-silica modified polypropylene has good compatibility with high-density polyethylene, and can well improve the comprehensive properties of the high-density polyethylene corrugated pipe, such as impact resistance, ring stiffness and the like.
Further, the preparation method of the nano modified silica modified polypropylene comprises the following steps: adding polypropylene and nano titanium dioxide particles into a dispersing and stirring device, stirring and dispersing for 30-50 minutes at the temperature of 40-80 ℃, transferring the mixture into a second double-screw extruder, and extruding the mixture after melt blending at the temperature of 250-300 ℃ to obtain nano titanium dioxide modified polypropylene; the nano titanium dioxide particles are subjected to surface modification by a coupling agent, and the particle size of the nano titanium dioxide particles is 50-100 nm. The nano particles after surface modification by the coupling agent can improve the binding property and the dispersibility of the nano silicon dioxide particles and the polypropylene.
Further, the antioxidant comprises the following components in a mass ratio of 10: (0-2) antioxidant 1010 and 2-hydroxy-4-n-octoxy benzophenone.
Further, the reinforcing auxiliary agent comprises ethylene propylene diene monomer, acrylic acid grafted polypropylene, talcum powder and a silane coupling agent; the mass ratio of the ethylene propylene diene monomer, the acrylic acid grafted polypropylene, the talcum powder and the silane coupling agent is 1: (0-0.1): 0.5: (0.1-0.2).
Further, in the third step, the operating parameters of the second double-screw extruder are as follows: the temperature of the first zone is 150-170 ℃, the temperature of the second zone is 170-180 ℃, the temperature of the third zone is 170-185 ℃, the temperature of the fourth zone is 180-190 ℃, the temperature of the fifth zone is 170-190 ℃, the temperature of the die head is 155-175 ℃, the feeding speed is 80-200 r/min, and the rotating speed of the screw is 150-350 r/min.
Further, the blender includes:
a frame;
the supporting seat is arranged on the rack;
the driving motor is arranged at the top of the rack;
the stirring barrel is connected between the driving motor and the supporting seat;
the pair of stirring devices are arranged on two sides of the stirring barrel in an opposite and vertically staggered manner;
the material scraping device is arranged at the bottom of the stirring barrel and is abutted against the stirring device below, and the stirring device below extrudes the material scraping device when rotating, so that the material scraping device can rotate to scrape materials on the arc-shaped bottom of the stirring barrel.
Further, the stirring device includes:
the stirring motor is arranged on the side wall of the stirring barrel;
the stirring rod is connected with the stirring motor and is connected with the stirring barrel through a bearing;
and the stirring blades are annularly distributed on the stirring rod.
Further, the scraping device comprises:
the mounting plate is arranged at the lower end of the stirring barrel;
the threaded sleeve is fixed on the mounting plate;
the screw is in threaded connection with the screw in the screw sleeve, and the stirring blade at the lowest part can be propped against the top of the screw;
a plurality of scrapers connected with the screw rod through connecting rods.
Still further, the scraping device further comprises:
the connecting plate is connected to the lower end of the screw through a first bearing;
and the tension springs are connected between the mounting plate and the connecting plate.
Furthermore, a plurality of grooves are formed in the supporting seat, balls are arranged in the grooves, the bottom of the arc bottom is pressed against the balls, a supporting block is connected to the bottom of the arc bottom, and the supporting block is connected with the supporting seat through a second bearing.
It can be seen from the above technical solution that the present application has the advantages that:
1. the invention provides a preparation process of a high-performance corrugated pipe, which is characterized in that functional plastics are added into high-density polyethylene to improve the comprehensive performance of the high-density polyethylene corrugated pipe, particularly the impact resistance, the ring rigidity and the ring flexibility of the corrugated pipe.
2. When the high-performance corrugated pipe is prepared, the antioxidant and the enhancing auxiliary agent are also added, the compounded antioxidant and various enhancing auxiliary agents are adopted, the antioxidant property and the light resistance of the corrugated pipe are improved, the service life of the corrugated pipe can be prolonged, and the comprehensive performance of the corrugated pipe can be obviously improved by using the enhancing auxiliary agent
3. The stirring machine is further arranged in the stirring device, so that materials at the bottom of the stirring barrel can be turned up, and stirring is more uniform.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic structural diagram of the present application.
Fig. 2 is a partially enlarged view of a portion a of fig. 1.
Fig. 3 is a partially enlarged view of fig. 1 at B.
List of reference numerals: the automatic feeding device comprises a frame 1, a supporting seat 2, a groove 21, a ball 22, a second bearing 23, a supporting block 24, a driving motor 3, a stirring barrel 4, a hopper 41, an arc-shaped bottom 42, a blanking pipe 43, a stirring device 5, a stirring motor 51, a stirring rod 52, a stirring blade 53, a scraping device 6, an installation plate 61, a threaded sleeve 62, a screw 63, a connecting rod 631, a connecting plate 632, a first bearing 633, a scraping plate 64 and a tension spring 65.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present application are provided to explain the present application and not to limit the present application.
Example 1
A preparation process of a high-performance corrugated pipe comprises the following steps:
step one, batching: respectively weighing 100kg of high-density polyethylene, 10kg of functional plastic, 0.1kg of antioxidant and 0.1kg of reinforcing aid for later use;
in the above, the functional plastic comprises, by mass, 10:1 polystyrene and nano-silica modified polypropylene; the preparation method of the nano modified silicon dioxide modified polypropylene comprises the following steps: adding polypropylene and nano titanium dioxide particles into a dispersing and stirring device, stirring and dispersing for 30 minutes at the temperature of 40 ℃, transferring the mixture into a second double-screw extruder, and extruding the mixture after melt blending at the temperature of 250 ℃ to obtain nano titanium dioxide modified polypropylene; the nano titanium dioxide particles are subjected to surface modification by a coupling agent, and the particle size of the nano titanium dioxide particles is 50nm; the antioxidant comprises the following components in percentage by mass: 0.2 of antioxidant 1010 and 2-hydroxy-4-n-octoxy benzophenone; the reinforcing additive comprises ethylene propylene diene monomer, acrylic acid grafted polypropylene, talcum powder and a silane coupling agent; the mass ratio of the ethylene propylene diene monomer, the acrylic acid grafted polypropylene, the talcum powder and the silane coupling agent is 1:0.02:0.5:0.1.
step two, mixing materials: stirring and mixing the high-density polyethylene, the functional plastic, the antioxidant and the reinforcing auxiliary agent weighed in the step one in a stirrer for 20 minutes to obtain a mixed material;
step three, extruding and granulating: conveying the mixed material obtained in the step two into a first double-screw extruder by using a screw conveyor pipeline, and extruding and granulating after mixing to obtain granules;
in the above, the operating parameters of the second twin-screw extruder are as follows: the temperature of the first zone is 150 ℃, the temperature of the second zone is 170 ℃, the temperature of the third zone is 170 ℃, the temperature of the fourth zone is 180 ℃, the temperature of the fifth zone is 170 ℃, the temperature of the die head is 155 ℃, the feeding speed is 80r/min, and the rotating speed of the screw is 150r/min.
Step four, extrusion forming: and (3) injecting the granules obtained in the third step into a hopper of a pipe extruder, and cooling and cutting the granules after extrusion molding to obtain the high-performance corrugated pipe.
Referring to fig. 1 to 3, as shown in fig. 1, the blender includes: a frame 1; the supporting seat 2 is arranged on the rack 1; the driving motor 3 is installed at the top of the rack 1; the stirring barrel 4 is connected between the driving motor 3 and the supporting seat 2; the pair of stirring devices 5 are arranged on two sides of the stirring barrel 4 in an opposite and vertically staggered manner; and the scraping device 6 is arranged at the bottom of the stirring barrel 4, the scraping device 6 is abutted against the stirring device 5 below, and the stirring device 5 below extrudes the scraping device 6 when rotating, so that the scraping device 6 can rotate to scrape the material on the arc-shaped bottom 42 of the stirring barrel 4.
Preferably, the stirring device 5 comprises: the stirring motor 51 is installed on the side wall of the stirring barrel 4; the stirring rod 52 is connected with the stirring motor 51, and the stirring rod 52 is connected with the stirring barrel 4 through a bearing; a plurality of stirring blades 53, a plurality of stirring blades 53 are annularly distributed on the stirring rod 52.
Preferably, in this application embodiment, agitating unit 5 below slope to the right side of top, agitating unit 5 below slope to the left side below, through the slope setting, can all stir the raw materials of co-altitude not to make the stirring more even, thereby stir efficiency height.
As shown in fig. 2, the scraping device 6 includes: the mounting plate 61, the mounting plate 61 is set up in the lower end of the said agitator 4, the said mounting plate 61 is located above the said arcuate bottom 42; the screw sleeve 62 is fixed on the mounting plate 61; the screw 63 is in threaded connection with the screw sleeve 62, and the lowest stirring blade 53 can be abutted against the top of the screw 63; a plurality of scraping plates 64, and the scraping plates 64 are all connected with the screw 63 through connecting rods 631.
Preferably, the scraping device 6 further comprises: a connecting plate 632, wherein the connecting plate 632 is connected to the lower end of the screw 63 through a first bearing 633, and the connecting rod 631 is positioned below the connecting plate 632; a plurality of extension spring 65, extension spring 65 connect the mounting panel 61 with between the connecting plate 632.
Preferably, in the embodiment of the present application, when the stirring blade 53 rotates along with the stirring rod 52, the lowermost stirring blade 53 abuts against the screw 63, so that the screw 63 is driven to move downwards through the extrusion effect, and the screw 63 is in threaded connection with the screw sleeve 62, so that the screw 63 moves downwards in a rotating manner, and the connecting rod 631 drives the scraper 64 to move downwards and rotate, so as to turn up the raw material attached to the arc-shaped bottom 42, thereby accelerating the mixing of the raw material, when the screw 63 moves downwards, the connecting plate 632 moves downwards synchronously with the first bearing 633, so that the tension spring 65 is elongated, and when the lowermost stirring blade 53 is far away from the screw 63, the elastic force of the tension spring 65 can drive the screw 63 to reset, so that the scraper 64 makes reciprocating motion through the matching between the stirring blade 53 and the tension spring 65, so that the scraper 6 always provides an auxiliary stirring effect during the stirring process, thereby greatly improving the stirring efficiency.
As shown in fig. 3, a plurality of grooves 21 are formed in the supporting seat 2, balls 22 are arranged in the grooves 21, the bottom of the arc-shaped bottom 42 is pressed against the balls 22, the bottom of the arc-shaped bottom 42 is connected with a supporting block 24, the supporting block 24 is connected with the supporting seat 2 through a second bearing 23, and in the rotating process of the stirring barrel 4, the arc-shaped bottom 42 is rotatably connected with the supporting seat 2 through the balls 22 and the supporting block 24, so that the supporting seat 2 can support the stirring barrel 4, the stirring barrel 4 can rotate more stably, the friction between the supporting seat and the supporting seat 2 can be reduced, and the service life is longer.
Preferably, in the present embodiment, two hoppers 41 are provided at the top of the mixing drum 4 to feed different materials into the mixing drum 4.
Preferably, in the embodiment of the present application, a discharging pipe 43 is disposed at the bottom of the arc-shaped bottom 42, and a valve is mounted on the discharging pipe 43, so that the mixed raw materials can be discharged by opening the valve after the raw materials are stirred.
The working principle is as follows: with high density polyethylene, functional plastics, anti-oxidant, the reinforcing auxiliary agent is placed into agitator 4 from two hoppers 41, start driving motor 3, make agitator 4 rotate, start a pair of agitator motor 51 simultaneously, make stirring vane 53 stir the mixture to the raw materials in the agitator 4, at the in-process of stirring, scraper 6 works, scrape the raw materials of agitator 4 bottom, thereby improve stirring effect, stir 30 minutes after, open the valve, make the miscellaneous material discharge from unloading pipe 43.
Example 2
A preparation process of a high-performance corrugated pipe comprises the following steps:
step one, batching: respectively weighing 100kg of high-density polyethylene, 20kg of functional plastic, 2.0kg of antioxidant and 2.0kg of reinforcing aid for later use;
in the above, the functional plastic comprises, by mass, 10:2 polystyrene and nano-silica modified polypropylene; the preparation method of the nano modified silicon dioxide modified polypropylene comprises the following steps: adding polypropylene and nano titanium dioxide particles into a dispersing and stirring device, stirring and dispersing for 50 minutes at the temperature of 80 ℃, transferring the mixture into a second double-screw extruder, and extruding the mixture after melt blending at the temperature of 300 ℃ to obtain nano titanium dioxide modified polypropylene; the nano titanium dioxide particles are subjected to surface modification by a coupling agent, and the particle size of the nano titanium dioxide particles is 100nm; the antioxidant comprises the following components in percentage by mass: 2 antioxidant 1010 and 2-hydroxy-4-n-octoxy benzophenone; the reinforcing auxiliary agent comprises ethylene propylene diene monomer, acrylic acid grafted polypropylene, talcum powder and a silane coupling agent; the mass ratio of the ethylene propylene diene monomer, the acrylic acid grafted polypropylene, the talcum powder and the silane coupling agent is 1:0.1:0.5:0.2.
step two, mixing materials: stirring and mixing the high-density polyethylene, the functional plastic, the antioxidant and the reinforcing auxiliary agent weighed in the step one in a stirrer for 30 minutes to obtain a mixed material;
step three, extruding and granulating: conveying the mixed material obtained in the step two to a first double-screw extruder by using a dragon conveying pipeline, mixing, extruding and granulating to obtain granules;
in the above, the operating parameters of the second twin-screw extruder are as follows: the temperature of the first zone is 170 ℃, the temperature of the second zone is 180 ℃, the temperature of the third zone is 185 ℃, the temperature of the fourth zone is 190 ℃, the temperature of the fifth zone is 190 ℃, the temperature of the die head is 175 ℃, the feeding speed is 200r/min, and the rotating speed of the screw is 350r/min.
Step four, extrusion forming: and (3) injecting the granules obtained in the third step into a hopper of a pipe extruder, and cooling and cutting the granules after extrusion molding to obtain the high-performance corrugated pipe.
Example 3
A preparation process of a high-performance corrugated pipe comprises the following steps:
step one, batching: respectively weighing 100kg of high-density polyethylene, 12kg of functional plastic, 0.5kg of antioxidant and 0.5kg of reinforcing aid for later use;
in the above, the functional plastic comprises, by mass, 10:1.2 polystyrene and nano-silica modified polypropylene; the preparation method of the nano modified silicon dioxide modified polypropylene comprises the following steps: adding polypropylene and nano titanium dioxide particles into a dispersing and stirring device, stirring and dispersing for 35 minutes at the temperature of 50 ℃, transferring into a second double-screw extruder, and extruding after melt blending at the temperature of 260 ℃ to obtain nano titanium dioxide modified polypropylene; the nano titanium dioxide particles are subjected to surface modification by a coupling agent, and the particle size of the nano titanium dioxide particles is 60nm; the antioxidant comprises the following components in percentage by mass: 0.5 of antioxidant 1010 and 2-hydroxy-4-n-octoxy benzophenone; the reinforcing auxiliary agent comprises ethylene propylene diene monomer, acrylic acid grafted polypropylene, talcum powder and a silane coupling agent; the mass ratio of the ethylene propylene diene monomer, the acrylic acid grafted polypropylene, the talcum powder and the silane coupling agent is 1:0.05:0.5:0.12.
step two, mixing materials: stirring and mixing the high-density polyethylene, the functional plastic, the antioxidant and the reinforcing auxiliary agent weighed in the step one in a stirrer for 22 minutes to obtain a mixed material;
step three, extruding and granulating: conveying the mixed material obtained in the step two into a first double-screw extruder by using a screw conveyor pipeline, and extruding and granulating after mixing to obtain granules;
in the above, the operating parameters of the second twin-screw extruder are as follows: the temperature of the first zone is 155 ℃, the temperature of the second zone is 172 ℃, the temperature of the third zone is 17 ℃, the temperature of the fourth zone is 182 ℃, the temperature of the fifth zone is 175 ℃, the temperature of the die head is 160 ℃, the feeding speed is 100r/min, and the rotating speed of the screw is 200r/min.
Step four, extrusion forming: and (3) injecting the granules obtained in the third step into a hopper of a pipe extruder, and cooling and cutting the granules after extrusion molding to obtain the high-performance corrugated pipe.
Example 4
A preparation process of a high-performance corrugated pipe comprises the following steps:
step one, batching: respectively weighing 100kg of high-density polyethylene, 18kg of functional plastic, 1.5kg of antioxidant and 1.5kg of reinforcing aid for later use;
in the above, the functional plastic comprises, by mass, 10:1.8 polystyrene and nano-silica modified polypropylene; the preparation method of the nano modified silicon dioxide modified polypropylene comprises the following steps: adding polypropylene and nano titanium dioxide particles into a dispersing and stirring device, stirring and dispersing for 45 minutes at the temperature of 70 ℃, transferring into a second double-screw extruder, and extruding after melt blending at the temperature of 290 ℃ to obtain nano titanium dioxide modified polypropylene; the nano titanium dioxide particles are subjected to surface modification by a coupling agent, and the particle size of the nano titanium dioxide particles is 90nm; the antioxidant comprises the following components in percentage by mass: 1.8 of an antioxidant 1010 and 2-hydroxy-4-n-octoxy benzophenone; the reinforcing auxiliary agent comprises ethylene propylene diene monomer, acrylic acid grafted polypropylene, talcum powder and a silane coupling agent; the mass ratio of the ethylene propylene diene monomer, the acrylic acid grafted polypropylene, the talcum powder and the silane coupling agent is 1:0.08:0.5:0.18.
step two, mixing materials: stirring and mixing the high-density polyethylene, the functional plastic, the antioxidant and the reinforcing auxiliary agent weighed in the step one in a stirrer for 28 minutes to obtain a mixed material;
step three, extruding and granulating: conveying the mixed material obtained in the step two to a first double-screw extruder by using a dragon conveying pipeline, mixing, extruding and granulating to obtain granules;
in the above, the operating parameters of the second twin-screw extruder are as follows: the temperature of the first zone is 165 ℃, the temperature of the second zone is 178 ℃, the temperature of the third zone is 183 ℃, the temperature of the fourth zone is 188 ℃, the temperature of the fifth zone is 185 ℃, the temperature of the die head is 170 ℃, the feeding speed is 160r/min, and the rotating speed of the screw is 320r/min.
Step four, extrusion forming: and (3) injecting the granules obtained in the third step into a hopper of a pipe extruder, and cooling and cutting the granules after extrusion molding to obtain the high-performance corrugated pipe.
Example 5
A preparation process of a high-performance corrugated pipe comprises the following steps:
step one, batching: respectively weighing 100kg of high-density polyethylene, 14kg of functional plastic, 0.8kg of antioxidant and 0.8kg of reinforcing aid for later use;
in the above, the functional plastic comprises, by mass, 10:1.4 polystyrene and nano-silica modified polypropylene; the preparation method of the nano modified silicon dioxide modified polypropylene comprises the following steps: adding polypropylene and nano titanium dioxide particles into a dispersing and stirring device, stirring and dispersing for 40 minutes at the temperature of 60 ℃, transferring the mixture into a second double-screw extruder, and extruding the mixture after melt blending at the temperature of 280 ℃ to obtain nano titanium dioxide modified polypropylene; the nano titanium dioxide particles are subjected to surface modification by a coupling agent, and the particle size of the nano titanium dioxide particles is 80nm; the antioxidant comprises the following components in percentage by mass: 1 antioxidant 1010 and 2-hydroxy-4-n-octoxy benzophenone; the reinforcing auxiliary agent comprises ethylene propylene diene monomer, acrylic acid grafted polypropylene, talcum powder and a silane coupling agent; the mass ratio of the ethylene propylene diene monomer, the acrylic acid grafted polypropylene, the talcum powder and the silane coupling agent is 1:0.05:0.5:0.15.
step two, mixing materials: stirring and mixing the high-density polyethylene, the functional plastic, the antioxidant and the reinforcing auxiliary agent weighed in the step one in a stirrer for 25 minutes to obtain a mixed material;
step three, extruding and granulating: conveying the mixed material obtained in the step two to a first double-screw extruder by using a dragon conveying pipeline, mixing, extruding and granulating to obtain granules;
in the above, the operating parameters of the second twin-screw extruder are as follows: the temperature of the first zone is 160 ℃, the temperature of the second zone is 175 ℃, the temperature of the third zone is 175 ℃, the temperature of the fourth zone is 185 ℃, the temperature of the fifth zone is 180 ℃, the temperature of the die head is 165 ℃, the feeding speed is 140r/min, and the rotating speed of the screw is 250r/min.
Step four, extrusion forming: and (4) injecting the granules obtained in the third step into a hopper of a pipe extruder, and cooling and cutting the granules after extrusion molding to obtain the high-performance corrugated pipe.
Example 6
A preparation process of a high-performance corrugated pipe comprises the following steps:
step one, batching: respectively weighing 100kg of high-density polyethylene, 15kg of functional plastic, 1.0kg of antioxidant and 1.2kg of reinforcing additive for later use;
in the above, the functional plastic comprises, by mass, 10:1 polystyrene and nano-silica modified polypropylene; the preparation method of the nano modified silicon dioxide modified polypropylene comprises the following steps: adding polypropylene and nano titanium dioxide particles into a dispersing and stirring device, stirring and dispersing for 40 minutes at the temperature of 60 ℃, transferring the mixture into a second double-screw extruder, and extruding the mixture after melt blending at the temperature of 270 ℃ to obtain nano titanium dioxide modified polypropylene; the nano titanium dioxide particles are subjected to surface modification by a coupling agent, and the particle size of the nano titanium dioxide particles is 80nm; the antioxidant comprises the following components in percentage by mass: 1 antioxidant 1010 and 2-hydroxy-4-n-octoxy benzophenone; the reinforcing auxiliary agent comprises ethylene propylene diene monomer, talcum powder and a silane coupling agent; the mass ratio of the ethylene propylene diene monomer, the talcum powder and the silane coupling agent is 1:0.5:0.15.
step two, mixing materials: stirring and mixing the high-density polyethylene, the functional plastic, the antioxidant and the reinforcing auxiliary agent weighed in the step one in a stirrer for 25 minutes to obtain a mixed material;
step three, extruding and granulating: conveying the mixed material obtained in the step two to a first double-screw extruder by using a dragon conveying pipeline, mixing, extruding and granulating to obtain granules;
in the above, the operating parameters of the second twin-screw extruder are as follows: the temperature of the first zone is 160 ℃, the temperature of the second zone is 175 ℃, the temperature of the third zone is 178 ℃, the temperature of the fourth zone is 185 ℃, the temperature of the fifth zone is 180 ℃, the temperature of the die head is 165 ℃, the feeding speed is 120r/min, and the rotating speed of the screw is 250r/min.
Step four, extrusion forming: and (4) injecting the granules obtained in the third step into a hopper of a pipe extruder, and cooling and cutting the granules after extrusion molding to obtain the high-performance corrugated pipe.
Comparative example 1
A preparation process of a high-performance corrugated pipe comprises the following steps:
step one, batching: respectively weighing 100kg of high-density polyethylene, 15kg of functional plastic, 1.0kg of antioxidant and 1.2kg of reinforcing aid for later use;
in the above, the functional plastic is polystyrene; the antioxidant comprises the following components in percentage by mass: 1 antioxidant 1010 and 2-hydroxy-4-n-octoxy benzophenone; the reinforcing auxiliary agent comprises ethylene propylene diene monomer, acrylic acid grafted polypropylene, talcum powder and a silane coupling agent; the mass ratio of the ethylene propylene diene monomer, the acrylic acid grafted polypropylene, the talcum powder and the silane coupling agent is 1:0.05:0.5:0.15.
step two, mixing materials: stirring and mixing the high-density polyethylene, the functional plastic, the antioxidant and the reinforcing auxiliary agent weighed in the step one in a stirrer for 25 minutes to obtain a mixed material;
step three, extruding and granulating: conveying the mixed material obtained in the step two to a first double-screw extruder by using a dragon conveying pipeline, mixing, extruding and granulating to obtain granules;
in the above, the operating parameters of the second twin-screw extruder are as follows: the temperature of the first zone is 160 ℃, the temperature of the second zone is 175 ℃, the temperature of the third zone is 178 ℃, the temperature of the fourth zone is 185 ℃, the temperature of the fifth zone is 180 ℃, the temperature of the die head is 165 ℃, the feeding speed is 120r/min, and the rotating speed of the screw is 250r/min.
Step four, extrusion forming: and (3) injecting the granules obtained in the third step into a hopper of a pipe extruder, and cooling and cutting the granules after extrusion molding to obtain the high-performance corrugated pipe.
Comparative example 2
A preparation process of a high-performance corrugated pipe comprises the following steps:
step one, batching: respectively weighing 100kg of high-density polyethylene, 15kg of functional plastic, 1.0kg of antioxidant and 1.2kg of reinforcing aid for later use;
in the above, the functional plastic is nano-silica modified polypropylene; the preparation method of the nano modified silicon dioxide modified polypropylene comprises the following steps: adding polypropylene and nano titanium dioxide particles into a dispersing and stirring device, stirring and dispersing for 40 minutes at the temperature of 60 ℃, transferring the mixture into a second double-screw extruder, and extruding the mixture after melt blending at the temperature of 270 ℃ to obtain nano titanium dioxide modified polypropylene; the nano titanium dioxide particles are subjected to surface modification by a coupling agent, and the particle size of the nano titanium dioxide particles is 80nm; the antioxidant is 1010; the reinforcing additive comprises ethylene propylene diene monomer, acrylic acid grafted polypropylene, talcum powder and a silane coupling agent; the mass ratio of the ethylene propylene diene monomer, the acrylic acid grafted polypropylene, the talcum powder and the silane coupling agent is 1:0.05:0.5:0.15.
step two, mixing materials: stirring and mixing the high-density polyethylene, the functional plastic, the antioxidant and the reinforcing auxiliary agent weighed in the step one in a stirrer for 25 minutes to obtain a mixed material;
step three, extruding and granulating: conveying the mixed material obtained in the step two to a first double-screw extruder by using a dragon conveying pipeline, mixing, extruding and granulating to obtain granules;
in the above, the operating parameters of the second twin-screw extruder are as follows: the temperature of the first zone is 160 ℃, the temperature of the second zone is 175 ℃, the temperature of the third zone is 178 ℃, the temperature of the fourth zone is 185 ℃, the temperature of the fifth zone is 180 ℃, the temperature of the die head is 165 ℃, the feeding speed is 120r/min, and the rotating speed of the screw is 250r/min.
Step four, extrusion forming: and (3) injecting the granules obtained in the third step into a hopper of a pipe extruder, and cooling and cutting the granules after extrusion molding to obtain the high-performance corrugated pipe.
To further verify the progress of the present invention, the impact performance, ring stiffness, ring flexibility, and oven test performance of the high performance corrugated pipes prepared in examples 1-6 and comparative examples 1-2 were tested according to GB/T19472.1 2004, and the results are summarized in table 1 below;
table 1 performance testing of high performance corrugated pipes prepared according to examples 1-6 of the present invention and comparative examples 1-2:
as can be seen from the results of table 1, the high performance corrugated pipes prepared in examples 1 to 6 of the present invention have good impact properties and ring stiffness, and are excellent in ring flexibility and resistance properties; wherein, acrylic acid grafted polypropylene is not added in the reinforcing additive in the embodiment 6, and the impact performance and the ring stiffness of the prepared high-performance corrugated pipe are slightly inferior to those of the embodiment 1-5; furthermore, the functional plastic in the comparative example 1 is not added with the nano-silica modified polypropylene, the impact performance and the ring stiffness of the prepared high-performance corrugated pipe are obviously inferior to those of the high-performance corrugated pipes in the examples 1-5, the antioxidant with a single component is used in the comparative example 2, and the impact performance and the ring stiffness of the prepared high-performance corrugated pipe are also reduced to a certain degree.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and it will be apparent to those skilled in the art that various modifications and variations can be made in the embodiment of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A preparation process of a high-performance corrugated pipe is characterized by comprising the following steps:
step one, batching: respectively weighing 100 parts by weight of high-density polyethylene, 10-20 parts by weight of functional plastic, 0.1-2.0 parts by weight of antioxidant and 0.1-2.0 parts by weight of reinforcing additive for later use;
step two, mixing materials: stirring and mixing the high-density polyethylene, the functional plastic, the antioxidant and the reinforcing auxiliary agent weighed in the step one in a stirrer for 20-30 minutes to obtain a mixed material;
step three, extruding and granulating: conveying the mixed material obtained in the step two to a first double-screw extruder by using a dragon conveying pipeline, mixing, extruding and granulating to obtain granules;
step four, extrusion forming: and (4) injecting the granules obtained in the third step into a hopper of a pipe extruder, and cooling and cutting the granules after extrusion molding to obtain the high-performance corrugated pipe.
2. The process for preparing a high-performance corrugated pipe as claimed in claim 1, wherein the functional plastic comprises the following components in a mass ratio of 10: (1-2) the polystyrene and nano-silica modified polypropylene; the preparation method of the nano modified silicon dioxide modified polypropylene comprises the following steps: adding polypropylene and nano titanium dioxide particles into a dispersing and stirring device, stirring and dispersing for 30-50 minutes at the temperature of 40-80 ℃, transferring into a second double-screw extruder, and extruding after melt blending at the temperature of 250-300 ℃ to obtain nano titanium dioxide modified polypropylene; the nano titanium dioxide particles are subjected to surface modification by a coupling agent, and the particle size of the nano titanium dioxide particles is 50-100 nm.
3. The preparation process of the high-performance corrugated pipe as claimed in claim 1, wherein the antioxidant comprises the following components in a mass ratio of 10: (0-2) antioxidant 1010 and 2-hydroxy-4-n-octyloxybenzophenone.
4. The preparation process of the high-performance corrugated pipe as claimed in claim 1, wherein the reinforcing aid comprises ethylene propylene diene monomer, acrylic acid grafted polypropylene, talcum powder and silane coupling agent; the mass ratio of the ethylene propylene diene monomer, the acrylic acid grafted polypropylene, the talcum powder and the silane coupling agent is 1: (0-0.1): 0.5: (0.1-0.2).
5. The process for preparing high-performance corrugated pipe according to claim 1, wherein the operating parameters of the second double screw extruder in the third step are as follows: the temperature of the first zone is 150-170 ℃, the temperature of the second zone is 170-180 ℃, the temperature of the third zone is 170-185 ℃, the temperature of the fourth zone is 180-190 ℃, the temperature of the fifth zone is 170-190 ℃, the temperature of the die head is 155-175 ℃, the feeding speed is 80-200 r/min, and the rotating speed of the screw is 150-350 r/min.
6. The process of claim 1, wherein the blender comprises:
a frame (1);
a support seat (2) arranged on the frame (1);
a driving motor (3) arranged at the top of the frame (1);
the stirring barrel (4) is connected between the driving motor (3) and the supporting seat (2);
the pair of stirring devices (5) are opposite and are arranged on two sides of the stirring barrel (4) in a vertically staggered manner;
the material scraping device (6) is arranged at the bottom of the stirring barrel (4), the material scraping device (6) is abutted to the stirring device (5) below, and the stirring device (5) below extrudes the material scraping device (6) when rotating, so that the material scraping device (6) can rotate to scrape the material on the arc-shaped bottom (42) of the stirring barrel (4).
7. The process for the preparation of high performance corrugated pipes according to claim 6, wherein the stirring device (5) comprises:
a stirring motor (51) arranged on the side wall of the stirring barrel (4);
the stirring rod (52) is connected with the stirring motor (51), and the stirring rod (52) is connected with the stirring barrel (4) through a bearing;
a plurality of stirring blades (53) which are annularly distributed on the stirring rod (52).
8. Process for the preparation of high-performance corrugated tubing according to claim 7, wherein the scraping means (6) comprise:
the mounting plate (61) is arranged at the lower end of the stirring barrel (4);
a threaded sleeve (62) fixed on the mounting plate (61);
a screw (63) in threaded connection with the screw sleeve (62), wherein the lowest stirring blade (53) can be abutted against the top of the screw (63);
a plurality of scraping plates (64) which are connected with the screw rods (63) through connecting rods (631).
9. The process for the preparation of high performance corrugated pipe according to claim 8, wherein the scraping means (6) further comprises:
a connecting plate (632) connected to the lower end of the screw (63) through a first bearing (633);
a plurality of tension springs (65) connected between the mounting plate (61) and the connecting plate (632).
10. The preparation process of the high-performance corrugated pipe as claimed in claim 6, wherein the supporting seat (2) is provided with a plurality of grooves (21), balls (22) are arranged in the grooves (21), the bottom of the arc-shaped bottom (42) is pressed against the balls (22), the bottom of the arc-shaped bottom (42) is connected with a supporting block (24), and the supporting block (24) is connected with the supporting seat (2) through a second bearing (23).
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| CN202211311024.XA CN115895081A (en) | 2022-10-25 | 2022-10-25 | Preparation process of high-performance corrugated pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103937075A (en) * | 2014-05-06 | 2014-07-23 | 康泰塑胶科技集团有限公司 | Polyethylene corrugated pipe and preparation method thereof |
| CN105885228A (en) * | 2016-05-16 | 2016-08-24 | 陕西理工学院 | Method for preparing silicon dioxide modified polypropylene composite material |
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| CN212215207U (en) * | 2020-05-09 | 2020-12-25 | 莱阳市恒利塑粉有限公司 | A high-efficient rabbling mechanism of preventing blockking up for processing powder coating |
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2022
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| CN103937075A (en) * | 2014-05-06 | 2014-07-23 | 康泰塑胶科技集团有限公司 | Polyethylene corrugated pipe and preparation method thereof |
| CN105885228A (en) * | 2016-05-16 | 2016-08-24 | 陕西理工学院 | Method for preparing silicon dioxide modified polypropylene composite material |
| CN111231360A (en) * | 2020-03-23 | 2020-06-05 | 安徽省荣龙塑业科技有限公司 | Production process of nano modified high-density polyethylene corrugated pipe |
| CN212215207U (en) * | 2020-05-09 | 2020-12-25 | 莱阳市恒利塑粉有限公司 | A high-efficient rabbling mechanism of preventing blockking up for processing powder coating |
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