CN111825966A - Environment-friendly degradable plastic and production process thereof - Google Patents
Environment-friendly degradable plastic and production process thereof Download PDFInfo
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- CN111825966A CN111825966A CN202010712543.1A CN202010712543A CN111825966A CN 111825966 A CN111825966 A CN 111825966A CN 202010712543 A CN202010712543 A CN 202010712543A CN 111825966 A CN111825966 A CN 111825966A
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/04—Conditioning or physical treatment of the material to be shaped by cooling
- B29B13/045—Conditioning or physical treatment of the material to be shaped by cooling of powders or pellets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29B9/00—Making granules
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- C08K2003/164—Aluminum halide, e.g. aluminium chloride
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Abstract
The invention discloses an environment-friendly degradable plastic and a production process thereof, wherein polylactide, polybutylene succinate and polyvinyl chloride are mixed as a base material and are mixed with grafted starch to prepare the plastic, so that the mechanical effect and the high-temperature resistance of a product can be improved while the product is effectively degraded, substances such as sodium bismuthate, polyaluminium chloride and the like are added, the degradation efficiency of the product can be effectively improved, no pollution component is generated during degradation, the environment-friendly degradable plastic is safe and environment-friendly, the degradation rate is high, the 25-day degradation rate of the environment-friendly degradable plastic is 99.3-99.9% as determined by GB/T20197-.
Description
Technical Field
The invention relates to the technical field of waste plastic recovery, in particular to an environment-friendly degradable plastic and a production process thereof.
Background
The plastic has the excellent characteristics of light weight, stable chemical property, no corrosion, good impact resistance and the like so as to replace most basic materials, and becomes a common raw material for people in life. In the face of increasingly serious white pollution, people hope to find a plastic substitute which can replace the performance of the existing plastic and does not cause white pollution, and degradable plastic is produced at the same time.
The existing plastic has poor degradation effect and can cause environmental pollution, meanwhile, the plastic production process obtains master batches by extruding through an extruder, the existing extruding equipment easily remains a lot of base materials at the inner wall position of a feeding port and is not extruded to cause waste, meanwhile, the existing cooling equipment cannot efficiently cool the master batches after the master batches are prepared, and the condition that the master batches are mutually bonded easily occurs in the cooling process.
Disclosure of Invention
The invention aims to provide an environment-friendly degradable plastic and a production process thereof, and solves the following technical problems: (1) the plastic disclosed by the invention is prepared by mixing polylactide, polybutylene succinate and polyvinyl chloride as a base material and graft starch, can effectively ensure the degradation of a product and simultaneously improve the mechanical effect and high-temperature resistance of the product, is added with sodium bismuthate, polyaluminium chloride and other substances, can effectively improve the degradation efficiency of the product, does not generate pollution components during degradation, is safe and environment-friendly, has high degradation rate, and solves the technical problems that the degradation rate of waste plastics is low and a certain pollution exists in the prior art, and the degradation rate of the environment-friendly degradable plastic in 25 days is 99.3-99.9% as determined by GB/T20197-2006; (2) the method comprises the steps of putting backing materials into an extrusion cylinder from a feeding port on a feeding pipe on extrusion equipment, enabling the backing materials to enter the extrusion cylinder through the feeding pipe, driving a screw rod by a first motor, driving an annular scraper to ascend and descend in the feeding pipe through a connecting rod by the aid of a screw rod matched with a screw rod connecting block, scraping the residual backing materials on the inner wall of the feeding pipe by the annular scraper, enabling the scraped backing materials to fall into the extrusion cylinder, driving a central wheel to rotate by a second motor, further enabling three planet wheels to rotate in an inner fluted disc, driving the extrusion screws to rotate by spline shafts, enabling the three extrusion screws to rotate along the circumference while rotating in the extrusion cylinder, enabling extruded materials to be extruded from extrusion ports by the three extrusion screws, driving a grain cutting rod to rotate by the aid of the grain cutting rod matched with a cutter holder, enabling the cutting blade to, effectively strike off the remaining bed charge of pan feeding intraductal wall, avoid some bed charges not extruded and cause the extravagant condition at pan feeding intraductal wall, through the structure setting of planet wheel simultaneously, three screw rod of extruding is in the barrel of extruding along the circumference rotation when self rotation is extruded the bed charge, effectively improves the mixed effect of bed charge, has more efficient and extrudes the effect. (3) The degradable plastic master batches fall into the conveying pipe and enter the cooling box through the conveying pipe, the circulating pump is matched with the cooling oil box to circulate cooling oil in the circulating pipe through the connecting pipe, the fourth motor drives the circulating pipe to rotate through the matching of the two gears which are meshed and connected, the circulating pipe is used for stirring and cooling the degradable plastic master batches in the cooling box, the degradable plastic master batches are taken out after cooling, then the master batches are placed in an injection molding machine, high-temperature pressure-maintaining injection molding is adopted to obtain the environment-friendly degradable plastic, the extrusion equipment effectively circulates the cooling oil through the circulating pipe, meanwhile, the circulating pipe rotates, the prepared degradable plastic master batches are effectively and quickly cooled, and the situation that the master batches are mutually bonded in the cooling process is avoided.
The purpose of the invention can be realized by the following technical scheme:
the environment-friendly degradable plastic is prepared from the following raw materials in parts by weight: 40-50 parts of polylactide, 12-14 parts of polybutylene succinate, 4-8 parts of polyvinyl chloride, 4-10 parts of plant fiber, 30-40 parts of grafted starch, 1-3 parts of calcium oxide, 1-3 parts of oligosaccharide, 1-1.6 parts of nano silicon dioxide, 1-2 parts of polyaluminium chloride, 0.6-1.6 parts of sodium bismuthate, 0.4-0.8 part of dispersant, 0.2-0.5 part of cross-linking agent and 1-1.2 parts of plasticizer;
the environment-friendly degradable plastic is prepared by the following steps:
the method comprises the following steps: mixing polylactide, poly (butylene succinate) and polyvinyl chloride, stirring and mixing at high temperature and high pressure to obtain a mixed base material for later use;
step two: mixing and grinding plant fiber, grafted starch and calcium oxide, adding deionized water, stirring at a high speed, adding oligosaccharide, and placing in an ultrasonic oscillator for oscillation and homogenization to obtain mixed slurry for later use;
step three: adding a dispersing agent, nano silicon dioxide, polyaluminium chloride and sodium bismuthate into the mixed base material, mixing, heating and stirring, adding the mixed slurry, the cross-linking agent and the plasticizer in the step two, and continuously stirring completely to obtain a base material for later use;
step four: the method comprises the steps of putting base materials into a feeding port on a feeding pipe on an extrusion device, enabling the base materials to enter an extrusion cylinder through the feeding pipe, driving a screw rod by a first motor, driving an annular scraper to ascend and descend in the feeding pipe through a connecting rod by the aid of a screw rod matching screw rod connecting block, scraping the base materials remained on the inner wall of the feeding pipe by the annular scraper, enabling the scraped base materials to fall into the extrusion cylinder, driving a central wheel to rotate by a second motor, further enabling three planet wheels to rotate in an inner fluted disc, driving the extrusion screw rods to rotate by spline shafts, enabling the three extrusion screw rods to rotate along the circumference while rotating in the extrusion cylinder, enabling extruded materials to be extruded from extrusion ports by the three extrusion screw rods, driving a grain cutting rod to rotate, enabling the grain cutting rod to match a cutter holder to drive a cutting blade to rotate, enabling the cutting blade to cut the extruded, the circulating pump is matched with the cooling oil tank to circulate cooling oil in the circulating pipe through the connecting pipe, the fourth motor drives the circulating pipe to rotate through the matching of the two gears which are connected in a meshed mode, the circulating pipe is used for stirring and cooling the degradable plastic master batches in the cooling tank, the degradable plastic master batches are taken out after cooling, then the master batches are placed in an injection molding machine, and high-temperature pressure-maintaining injection molding is adopted to obtain the environment-friendly degradable plastic.
Further, the dispersing agent is a mixture of barium stearate, polyethylene wax and polyethylene glycol in a mass ratio of 2: 1.
Further, the cross-linking agent is any one of dicumyl peroxide, benzoyl peroxide, di-tert-butyl peroxide and dicumyl hydroperoxide.
Further, the plasticizer is any one of di-n-octyl phthalate, butyl benzyl phthalate, di-sec-octyl phthalate and dicyclohexyl phthalate.
Further, the extrusion equipment comprises an extrusion cylinder horizontally arranged, the extrusion cylinder is installed on a bottom frame, a feeding pipe is installed at the top of one side of the extrusion cylinder and communicated with the extrusion cylinder, two feeding ports are formed in the top of the feeding pipe, an inner fluted disc is arranged on one side of the extrusion cylinder, a second motor is installed on one side of the inner fluted disc, two support columns are installed on the outer surface of the inner fluted disc, the inner fluted disc is installed on the bottom frame through the two support columns, the second motor is used for driving a center wheel, the center wheel is rotatably installed at the center of the inner fluted disc, three planet wheels are meshed with the inner tooth surface of the inner fluted disc and are distributed in an equal-radian annular manner, the three planet wheels are meshed with the center wheel, the planet wheels are sleeved on a spline shaft, the spline shaft is installed at one end of the extrusion, the utility model discloses a cutting machine, including extrusion cylinder, motor frame, motor, cutter mounting seat, conveying port intercommunication conveyer pipe, conveyer pipe intercommunication cooler bin lateral wall, extrusion cylinder surface mounting has cast aluminium heater, extrusion cylinder one side has been seted up three and has been extruded the mouth, and three extrusion port is equidistant annular distribution, install the motor frame on the chassis, the extrusion cylinder sets up between motor frame and inner fluted disc, install the third motor that is the level setting on the motor frame, the third motor is used for the drive to cut the grain pole, cut and install three cutting blade through the blade holder mount pad on the grain pole, radians such as three cutting blade are installed on the blade holder, offer the delivery port that is used for carrying.
Further, first motor is installed at pan feeding pipe top, and two pan feeding mouths set up respectively in first motor both sides, first motor is used for driving the lead screw, and the lead screw rotates to set up in the pan feeding intraductally, and the lead screw outer peripheral face rotates the cover and is equipped with the lead screw connecting block, and a plurality of connecting rods are installed to the lead screw connecting block outer peripheral face, and a plurality of connecting rods are equal radian annular distribution in the lead screw connecting block outer peripheral face, the connecting rod is used for connecting annular scraper, and annular scraper is used for striking off the bed charge.
Further, cooler bin one side is provided with the circulating pump, the connecting pipe is all installed with the return water mouth to the delivery port of circulating pump, the circulating pump passes through pipe fitting intercommunication cooling oil tank, and two connecting pipes communicate the circulating pipe both sides respectively, the circulating pipe rotates and runs through the cooler bin both sides, the gear is installed to circulating pipe one end, the fourth motor is installed to the cooler bin lateral wall, the gear is installed to fourth motor output end, two gear intermeshing.
The invention has the beneficial effects that:
(1) according to the environment-friendly degradable plastic and the production process thereof, polylactide, polybutylene succinate and polyvinyl chloride are mixed as a base material and are mixed with grafted starch to prepare the plastic, so that the mechanical effect and the high-temperature resistance of a product can be improved while the product is effectively guaranteed to be degraded, the degradation efficiency of the product can be effectively improved by adding substances such as sodium bismuthate, polyaluminium chloride and the like, no pollution component is generated during degradation, the environment-friendly degradable plastic is safe and environment-friendly, the degradation rate is high, and the 25-day degradation rate of the environment-friendly degradable plastic is 99.3-99.9% as determined by GB/T20197-;
(2) the method comprises the steps of putting backing materials into an extrusion cylinder from a feeding port on a feeding pipe on extrusion equipment, enabling the backing materials to enter the extrusion cylinder through the feeding pipe, driving a screw rod by a first motor, driving an annular scraper to ascend and descend in the feeding pipe through a connecting rod by the aid of a screw rod matched with a screw rod connecting block, scraping the residual backing materials on the inner wall of the feeding pipe by the annular scraper, enabling the scraped backing materials to fall into the extrusion cylinder, driving a central wheel to rotate by a second motor, further enabling three planet wheels to rotate in an inner fluted disc, driving the extrusion screws to rotate by spline shafts, enabling the three extrusion screws to rotate along the circumference while rotating in the extrusion cylinder, enabling extruded materials to be extruded from extrusion ports by the three extrusion screws, driving a grain cutting rod to rotate by the aid of the grain cutting rod matched with a cutter holder, enabling the cutting blade to, residual bed charge on the inner wall of the feeding pipe is effectively scraped, the situation that part of bed charge is not extruded on the inner wall of the feeding pipe to cause waste is avoided, meanwhile, through the structural arrangement of the planet wheels, the three extrusion screws rotate along the circumference in the extrusion barrel while self-rotating to extrude the bed charge, the mixing effect of the bed charge is effectively improved, and the more efficient extrusion effect is achieved;
(3) the degradable plastic master batches fall into the conveying pipe and enter the cooling box through the conveying pipe, the circulating pump is matched with the cooling oil box to circulate cooling oil in the circulating pipe through the connecting pipe, the fourth motor drives the circulating pipe to rotate through the matching of the two gears which are meshed and connected, the circulating pipe is used for stirring and cooling the degradable plastic master batches in the cooling box, the degradable plastic master batches are taken out after cooling, then the master batches are placed in an injection molding machine, high-temperature pressure-maintaining injection molding is adopted to obtain the environment-friendly degradable plastic, the extrusion equipment effectively circulates the cooling oil through the circulating pipe, meanwhile, the circulating pipe rotates, the prepared degradable plastic master batches are effectively and quickly cooled, and the situation that the master batches are mutually bonded in the cooling process is avoided.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the structure of an extrusion apparatus of the present invention;
FIG. 2 is an internal structural view of a feed tube according to the present invention;
FIG. 3 is a schematic view of the construction of the annular doctor blade of the invention;
FIG. 4 is a top view of the feed tube of the present invention;
FIG. 5 is a side elevational view of the inner toothed disc of the present invention;
FIG. 6 is an internal structural view of the extrusion cylinder of the present invention;
FIG. 7 is an installation view of the circulation tube of the present invention.
In the figure: 1. an extrusion cylinder; 2. a feeding pipe; 3. a first motor; 4. a connecting rod; 5. an annular scraper; 6. an inner fluted disc; 7. a second motor; 8. a chassis; 9. a support pillar; 10. a center wheel; 11. a planet wheel; 13. extruding a screw; 14. an extrusion port; 15. a motor frame; 16. a third motor; 17. granulating rods; 18. a cutting blade; 19. a delivery pipe; 20. a cooling tank; 21. a circulation pump; 22. cooling the oil tank; 23. a connecting pipe; 24. a circulation pipe; 25. and a fourth motor.
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. 1-7
The environment-friendly degradable plastic is prepared from the following raw materials in parts by weight: 40 parts of polylactide, 12 parts of polybutylene succinate, 4 parts of polyvinyl chloride, 4 parts of plant fiber, 30 parts of grafted starch, 1 part of calcium oxide, 1 part of oligosaccharide, 1 part of nano silicon dioxide, 1 part of polyaluminium chloride, 0.6 part of sodium bismuthate, 0.4 part of dispersant, 0.2 part of cross-linking agent and 1 part of plasticizer;
the environment-friendly degradable plastic is prepared by the following steps:
the method comprises the following steps: mixing polylactide, poly (butylene succinate) and polyvinyl chloride, stirring and mixing at high temperature and high pressure to obtain a mixed base material for later use;
step two: mixing and grinding plant fiber, grafted starch and calcium oxide, adding deionized water, stirring at a high speed, adding oligosaccharide, and placing in an ultrasonic oscillator for oscillation and homogenization to obtain mixed slurry for later use;
step three: adding a dispersing agent, nano silicon dioxide, polyaluminium chloride and sodium bismuthate into the mixed base material, mixing, heating and stirring, adding the mixed slurry, the cross-linking agent and the plasticizer in the step two, and continuously stirring completely to obtain a base material for later use;
step four: the method comprises the steps of putting base materials into a feeding port on a feeding pipe on an extrusion device, enabling the base materials to enter an extrusion cylinder through the feeding pipe, driving a screw rod by a first motor, driving an annular scraper to ascend and descend in the feeding pipe through a connecting rod by the aid of a screw rod matching screw rod connecting block, scraping the base materials remained on the inner wall of the feeding pipe by the annular scraper, enabling the scraped base materials to fall into the extrusion cylinder, driving a central wheel to rotate by a second motor, further enabling three planet wheels to rotate in an inner fluted disc, driving the extrusion screw rods to rotate by spline shafts, enabling the three extrusion screw rods to rotate along the circumference while rotating in the extrusion cylinder, enabling extruded materials to be extruded from extrusion ports by the three extrusion screw rods, driving a grain cutting rod to rotate, enabling the grain cutting rod to match a cutter holder to drive a cutting blade to rotate, enabling the cutting blade to cut the extruded, the circulating pump is matched with the cooling oil tank to circulate cooling oil in the circulating pipe through the connecting pipe, the fourth motor drives the circulating pipe to rotate through the matching of the two gears which are connected in a meshed mode, the circulating pipe is used for stirring and cooling the degradable plastic master batches in the cooling tank, the degradable plastic master batches are taken out after cooling, then the master batches are placed in an injection molding machine, and high-temperature pressure-maintaining injection molding is adopted to obtain the environment-friendly degradable plastic.
Specifically, the dispersing agent is a mixture of barium stearate, polyethylene wax and polyethylene glycol in a mass ratio of 2: 1. The cross-linking agent is dicumyl peroxide. The plasticizer is di-n-octyl phthalate.
The 25-day degradation rate of the environment-friendly degradable plastic of example 1 is 99.3%.
Example 2
The environment-friendly degradable plastic is prepared from the following raw materials in parts by weight: 50 parts of polylactide, 14 parts of polybutylene succinate, 8 parts of polyvinyl chloride, 10 parts of plant fiber, 40 parts of grafted starch, 3 parts of calcium oxide, 3 parts of oligosaccharide, 1.6 parts of nano silicon dioxide, 2 parts of polyaluminium chloride, 1.6 parts of sodium bismuthate, 0.8 part of dispersant, 0.5 part of cross-linking agent and 1.2 parts of plasticizer;
the environment-friendly degradable plastic is prepared by the following steps:
the method comprises the following steps: mixing polylactide, poly (butylene succinate) and polyvinyl chloride, stirring and mixing at high temperature and high pressure to obtain a mixed base material for later use;
step two: mixing and grinding plant fiber, grafted starch and calcium oxide, adding deionized water, stirring at a high speed, adding oligosaccharide, and placing in an ultrasonic oscillator for oscillation and homogenization to obtain mixed slurry for later use;
step three: adding a dispersing agent, nano silicon dioxide, polyaluminium chloride and sodium bismuthate into the mixed base material, mixing, heating and stirring, adding the mixed slurry, the cross-linking agent and the plasticizer in the step two, and continuously stirring completely to obtain a base material for later use; step four is the same as in example 1.
Specifically, the dispersing agent is a mixture of barium stearate, polyethylene wax and polyethylene glycol in a mass ratio of 2: 1. The cross-linking agent is benzoyl peroxide. The plasticizer is butyl benzyl phthalate.
The 25-day degradation rate of the environment-friendly degradable plastic of the example 2 is 99.9%.
According to the figures 1-7, the extrusion device comprises an extrusion cylinder 1 horizontally arranged, the extrusion cylinder 1 is mounted on a bottom frame 8, a feeding pipe 2 is mounted at the top of one side of the extrusion cylinder 1, the feeding pipe 2 is communicated with the extrusion cylinder 1, two feeding ports are formed at the top of the feeding pipe 2, an inner fluted disc 6 is arranged at one side of the extrusion cylinder 1, a second motor 7 is mounted at one side of the inner fluted disc 6, two supporting columns 9 are mounted on the outer surface of the inner fluted disc 6, the inner fluted disc 6 is mounted on the bottom frame 8 through the two supporting columns 9, the second motor 7 is used for driving a central wheel 10, the central wheel 10 is rotatably mounted at the circle center of the inner fluted disc 6, three planet wheels 11 are meshed and connected with the inner fluted disc 6, the three planet wheels 11 are annularly distributed in equal radian, the three planet wheels 11 are meshed and connected with the central wheel 10, the planet wheels 11, 1 surface mounting of extrusion cylinder has cast aluminium heater, 1 one side of extrusion cylinder has been seted up three extrusion mouth 14, three extrusion mouth 14 is equidistant annular distribution, install motor frame 15 on the chassis 8, extrusion cylinder 1 sets up between motor frame 15 and internal fluted disc 6, install the third motor 16 that is the level setting on the motor frame 15, third motor 16 is used for the drive to cut grain pole 17, cut grain pole 17 and go up and install three cutting blade 18 through the blade holder mount pad, radians such as three cutting blade 18 are installed on the blade holder, offer the delivery port that is used for carrying the master batch on the chassis 8, delivery port intercommunication conveyer pipe 19, conveyer pipe 19 intercommunication cooler bin 20 lateral walls.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (9)
1. The environment-friendly degradable plastic is characterized by being prepared from the following raw materials in parts by weight: 40-50 parts of polylactide, 12-14 parts of polybutylene succinate, 4-8 parts of polyvinyl chloride, 4-10 parts of plant fiber, 30-40 parts of grafted starch, 1-3 parts of calcium oxide, 1-3 parts of oligosaccharide, 1-1.6 parts of nano silicon dioxide, 1-2 parts of polyaluminium chloride, 0.6-1.6 parts of sodium bismuthate, 0.4-0.8 part of dispersant, 0.2-0.5 part of cross-linking agent and 1-1.2 parts of plasticizer;
the environment-friendly degradable plastic is prepared by the following steps:
the method comprises the following steps: mixing polylactide, poly (butylene succinate) and polyvinyl chloride, stirring and mixing at high temperature and high pressure to obtain a mixed base material for later use;
step two: mixing and grinding plant fiber, grafted starch and calcium oxide, adding deionized water, stirring at a high speed, adding oligosaccharide, and placing in an ultrasonic oscillator for oscillation and homogenization to obtain mixed slurry for later use;
step three: adding a dispersing agent, nano silicon dioxide, polyaluminium chloride and sodium bismuthate into the mixed base material, mixing, heating and stirring, adding the mixed slurry, the cross-linking agent and the plasticizer in the step two, and continuously stirring completely to obtain a base material for later use;
step four: the method comprises the steps of putting a base material into an extrusion cylinder from a feeding port on a feeding pipe on an extrusion device, enabling the base material to enter the extrusion cylinder through the feeding pipe, scraping the base material remained on the inner wall of the feeding pipe by an annular scraper, driving a central wheel to rotate by a second motor, further rotating three planet wheels in an inner fluted disc, simultaneously driving extrusion screws to rotate by the planet wheels through spline shafts, enabling the three extrusion screws to rotate along the circumference while rotating in the extrusion cylinder, enabling an extruded material to be extruded out of the extrusion port by the three extrusion screws, driving a grain cutting rod to rotate by a third motor, enabling the grain cutting rod to be matched with a cutter holder to drive a cutting blade to rotate, enabling the extruded material to be cut by the cutting blade to obtain degradable plastic master batches, enabling the degradable plastic master batches to fall into a conveying pipe and enter a cooling box through the conveying pipe, enabling the, the circulating pipe is used for stirring and cooling the degradable plastic master batches in the cooling tank, the degradable plastic master batches are taken out after cooling, then the master batches are placed in an injection molding machine, and high-temperature pressure-maintaining injection molding is adopted to obtain the environment-friendly degradable plastic.
2. The production process of the environment-friendly degradable plastic is characterized by comprising the following steps of:
the method comprises the following steps: mixing polylactide, poly (butylene succinate) and polyvinyl chloride, stirring and mixing at high temperature and high pressure to obtain a mixed base material for later use;
step two: mixing and grinding plant fiber, grafted starch and calcium oxide, adding deionized water, stirring at a high speed, adding oligosaccharide, and placing in an ultrasonic oscillator for oscillation and homogenization to obtain mixed slurry for later use;
step three: adding a dispersing agent, nano silicon dioxide, polyaluminium chloride and sodium bismuthate into the mixed base material, mixing, heating and stirring, adding the mixed slurry, the cross-linking agent and the plasticizer in the step two, and continuously stirring completely to obtain a base material for later use;
step four: the method comprises the steps of putting base materials into a feeding port on a feeding pipe on an extrusion device, enabling the base materials to enter an extrusion cylinder through the feeding pipe, driving a screw rod by a first motor, driving an annular scraper to ascend and descend in the feeding pipe through a connecting rod by the aid of a screw rod matching screw rod connecting block, scraping the base materials remained on the inner wall of the feeding pipe by the annular scraper, enabling the scraped base materials to fall into the extrusion cylinder, driving a central wheel to rotate by a second motor, further enabling three planet wheels to rotate in an inner fluted disc, driving the extrusion screw rods to rotate by spline shafts, enabling the three extrusion screw rods to rotate along the circumference while rotating in the extrusion cylinder, enabling extruded materials to be extruded from extrusion ports by the three extrusion screw rods, driving a grain cutting rod to rotate, enabling the grain cutting rod to match a cutter holder to drive a cutting blade to rotate, enabling the cutting blade to cut the extruded, the circulating pump is matched with the cooling oil tank to circulate cooling oil in the circulating pipe through the connecting pipe, the fourth motor drives the circulating pipe to rotate through the matching of the two gears which are connected in a meshed mode, the circulating pipe is used for stirring and cooling the degradable plastic master batches in the cooling tank, the degradable plastic master batches are taken out after cooling, then the master batches are placed in an injection molding machine, and high-temperature pressure-maintaining injection molding is adopted to obtain the environment-friendly degradable plastic.
3. The production process of the environment-friendly degradable plastic as claimed in claim 2, wherein the dispersing agent is a mixture of barium stearate, polyethylene wax and polyethylene glycol in a mass ratio of 2: 1.
4. The process for producing environment-friendly degradable plastic according to claim 2, wherein the cross-linking agent is any one of dicumyl peroxide, benzoyl peroxide, di-tert-butyl peroxide and dicumyl hydroperoxide.
5. The process for producing environment-friendly degradable plastic according to claim 2, wherein the plasticizer is any one of di-n-octyl phthalate, butyl benzyl phthalate, di-sec-octyl phthalate and dicyclohexyl phthalate.
6. The production process of the environment-friendly degradable plastic as claimed in claim 2, wherein the extrusion device comprises an extrusion cylinder (1) horizontally arranged, the extrusion cylinder (1) is installed on a bottom frame (8), a feeding pipe (2) is installed at the top of one side of the extrusion cylinder (1), the feeding pipe (2) is communicated with the extrusion cylinder (1), two feeding ports are formed at the top of the feeding pipe (2), an inner fluted disc (6) is arranged at one side of the extrusion cylinder (1), a second motor (7) is installed at one side of the inner fluted disc (6), two supporting columns (9) are installed on the outer surface of the inner fluted disc (6), the inner fluted disc (6) is installed on the bottom frame (8) through the two supporting columns (9), the second motor (7) is used for driving a center wheel (10), the center wheel (10) is rotatably installed at the circle center of the inner fluted disc (6), the inner tooth disc (6) is internally toothed surface meshed with three planet wheels (11), the three planet wheels (11) are distributed in an annular shape with equal radian, the three planet wheels (11) are all meshed with a central wheel (10), the planet wheels (11) are sleeved on a spline shaft, the spline shaft is installed at one end of an extrusion screw (13), the three extrusion screw (13) and the three planet wheels (11) are in one-to-one correspondence, an aluminum casting heater is installed on the outer surface of the extrusion cylinder (1), three extrusion ports (14) are formed in one side of the extrusion cylinder (1), the three extrusion ports (14) are distributed in an annular shape with equal intervals, a motor frame (15) is installed on a chassis (8), the extrusion cylinder (1) is arranged between the motor frame (15) and the inner tooth disc (6), a third motor (16) which is horizontally arranged is installed on the motor frame (15), and the third motor (16) is used for driving a grain cutting, cut grain pole (17) and go up and install three cutting blade (18) through the blade holder mount pad, radian such as three cutting blade (18) are installed on the blade holder, offer the delivery port that is used for carrying the master batch on chassis (8), delivery port intercommunication conveyer pipe (19), conveyer pipe (19) intercommunication cooler bin (20) lateral wall.
7. The production process of the environment-friendly degradable plastic as claimed in claim 6, wherein a first motor (3) is installed at the top of the feeding pipe (2), two feeding ports are respectively arranged on two sides of the first motor (3), the first motor (3) is used for driving a screw rod, the screw rod is rotatably arranged in the feeding pipe (2), a screw rod connecting block is sleeved on the outer peripheral surface of the screw rod connecting block in a rotating mode, a plurality of connecting rods (4) are installed on the outer peripheral surface of the screw rod connecting block, the connecting rods (4) are annularly distributed on the outer peripheral surface of the screw rod connecting block in an equal radian mode, the connecting rods (4) are used for connecting annular scrapers (5), and the annular scrapers (5) are used for.
8. The production process of the environment-friendly degradable plastic as claimed in claim 6, wherein a circulating pump (21) is arranged on one side of the cooling tank (20), connecting pipes (23) are installed on a water outlet and a water return port of the circulating pump (21), the circulating pump (21) is communicated with the cooling oil tank (22) through pipe fittings, the two connecting pipes (23) are respectively communicated with two sides of a circulating pipe (24), the circulating pipe (24) rotates to penetrate through two sides of the cooling tank (20), gears are installed at one end of the circulating pipe (24), a fourth motor (25) is installed on the side wall of the cooling tank (20), gears are installed at the output end of the fourth motor (25), and the two gears are meshed with each other.
9. The production process of the environment-friendly degradable plastic as claimed in claim 6, wherein the working process of the extrusion equipment is as follows:
the method comprises the steps of putting a base material into an extrusion device from a feeding port on a feeding pipe (2), enabling the base material to enter an extrusion barrel (1) through the feeding pipe (2), driving a screw rod by a first motor (3), driving an annular scraper (5) to lift in the feeding pipe (2) through a connecting rod (4) by the cooperation of the screw rod and a screw rod connecting block, scraping the base material remained on the inner wall of the feeding pipe (2) by the annular scraper (5), enabling the scraped base material to fall into the extrusion barrel (1), driving a central wheel (10) to rotate by a second motor (7), further enabling three planet wheels (11) to rotate in an inner fluted disc (6), driving an extrusion screw (13) to rotate by the planet wheels (11), enabling the three extrusion screw (13) to rotate along the circumference while rotating in the extrusion barrel (1), enabling the extruded material to be extruded from the extrusion port (14) by the three extrusion screw (13), and driving a grain cutting rod (17) to rotate by a third motor (, cut grain pole (17) cooperation blade holder and drive cutting blade (18) and rotate, cutting blade (18) obtain the degradable plastics master batch with the extrudate cutting, the degradable plastics master batch falls to conveyer pipe (19) in, and get into cooler bin (20) through conveyer pipe (19), circulating pump (21) cooperation cooling oil tank (22) are through connecting pipe (23) at circulating pipe (24) inner loop cooling oil, gear cooperation drive circulating pipe (24) rotation that fourth motor (25) are connected through two meshings, circulating pipe (24) stir the cooling to the degradable plastics master batch in cooler bin (20), take out the degradable plastics master batch after the cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010712543.1A CN111825966A (en) | 2020-07-22 | 2020-07-22 | Environment-friendly degradable plastic and production process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010712543.1A CN111825966A (en) | 2020-07-22 | 2020-07-22 | Environment-friendly degradable plastic and production process thereof |
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| CN111825966A true CN111825966A (en) | 2020-10-27 |
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| CN202010712543.1A Withdrawn CN111825966A (en) | 2020-07-22 | 2020-07-22 | Environment-friendly degradable plastic and production process thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112391041A (en) * | 2020-11-18 | 2021-02-23 | 辽阳市晨阳编织制品有限公司 | Starch-based degradable environment-friendly plastic and preparation method thereof |
| CN112940433A (en) * | 2021-03-31 | 2021-06-11 | 东燊新材料科技(深圳)有限公司 | Environment-friendly degradable plastic material and preparation method thereof |
-
2020
- 2020-07-22 CN CN202010712543.1A patent/CN111825966A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112391041A (en) * | 2020-11-18 | 2021-02-23 | 辽阳市晨阳编织制品有限公司 | Starch-based degradable environment-friendly plastic and preparation method thereof |
| CN112940433A (en) * | 2021-03-31 | 2021-06-11 | 东燊新材料科技(深圳)有限公司 | Environment-friendly degradable plastic material and preparation method thereof |
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Application publication date: 20201027 |