CN117774174A - Preparation method of fully-degradable modified plastic - Google Patents
Preparation method of fully-degradable modified plastic Download PDFInfo
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- CN117774174A CN117774174A CN202211647895.9A CN202211647895A CN117774174A CN 117774174 A CN117774174 A CN 117774174A CN 202211647895 A CN202211647895 A CN 202211647895A CN 117774174 A CN117774174 A CN 117774174A
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- 229920003023 plastic Polymers 0.000 title claims abstract description 40
- 239000004033 plastic Substances 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000000835 fiber Substances 0.000 claims abstract description 27
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000000654 additive Substances 0.000 claims abstract description 7
- 230000000996 additive effect Effects 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000013590 bulk material Substances 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000010008 shearing Methods 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims description 52
- 230000004224 protection Effects 0.000 claims description 39
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 37
- 230000007246 mechanism Effects 0.000 claims description 36
- 238000005507 spraying Methods 0.000 claims description 27
- 241000196324 Embryophyta Species 0.000 claims description 21
- 230000002265 prevention Effects 0.000 claims description 14
- 229920002472 Starch Polymers 0.000 claims description 13
- 239000012791 sliding layer Substances 0.000 claims description 13
- 235000019698 starch Nutrition 0.000 claims description 13
- 239000008107 starch Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 230000015556 catabolic process Effects 0.000 claims description 7
- 238000006731 degradation reaction Methods 0.000 claims description 7
- 240000003183 Manihot esculenta Species 0.000 claims description 6
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 6
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 6
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 6
- 150000004676 glycans Chemical class 0.000 claims description 6
- 230000000813 microbial effect Effects 0.000 claims description 6
- 229920001282 polysaccharide Polymers 0.000 claims description 6
- 239000005017 polysaccharide Substances 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 229920001903 high density polyethylene Polymers 0.000 claims description 3
- 239000004700 high-density polyethylene Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000002829 reductive effect Effects 0.000 description 21
- 230000000694 effects Effects 0.000 description 18
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 16
- 230000002378 acidificating effect Effects 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 11
- 239000002699 waste material Substances 0.000 description 10
- 230000002035 prolonged effect Effects 0.000 description 8
- 239000002253 acid Substances 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 7
- 230000003449 preventive effect Effects 0.000 description 7
- 239000012634 fragment Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000010902 straw Substances 0.000 description 3
- 244000025254 Cannabis sativa Species 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229920006238 degradable plastic Polymers 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009979 protective mechanism Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
- C08L3/02—Starch; Degradation products thereof, e.g. dextrin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/04—Safety devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
- B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to the technical field of plastic production, in particular to a preparation method of full-degradable modified plastic, which comprises the following steps of S1: preparing raw materials, namely preparing plant fibers with different meshes, putting branches into a pulverizer, and crushing the branches into chips for later use; s2: adding the base material and the additive into a reaction kettle, heating in a water bath to 70-100 ℃, uniformly stirring and reacting for 20-30 minutes, and performing low-pressure reaction; s3: after the low-pressure reaction is finished, the pressure of the reaction kettle is increased to 2.0-3.5MPa, the temperature is increased to 100-120 ℃, the stirring time is controlled to 15-20 minutes under the low-speed stirring condition of 30-70rpm, then the pressure is relieved, the vacuum degree is kept to 0.02-0.08MPa, and the flexible bulk material is kept for later use; s4: and (3) putting the flexible dough into a dispersing machine, mixing and dispersing the flexible dough, controlling the time to be 3-6 minutes and the temperature to be 80-90 ℃, and then putting the flexible dough into a screw reaction extruder, and shearing, mixing, devolatilizing, extruding and granulating the flexible dough through the screw extruder to obtain the fully-degradable modified plastic.
Description
Technical Field
The invention belongs to the technical field of plastic production, and particularly relates to a preparation method of a full-degradable modified plastic.
Background
The plastic product provides a plurality of convenience for manpower, is widely applied to any field of human activities, has the advantages of low cost, strong plasticity and the like compared with metal, stone, wood, has wide application in national economy, has extremely important position in the current world, and has been developed at a high speed throughout the world for many years.
The development of plastic brings a plurality of environmental problems at the same time, and the plastic is difficult to decompose in natural environment and pollute the environment due to the characteristics of the plastic, and meanwhile, the plastic is engulfed by animals in the area to cause death of the animals, and plastic products are buried in soil to cause that the soil in the area cannot be normally used, thus influencing the continuous use of the soil and the like; therefore, in the existing research on plastic products, people have researched degradable plastics to reduce the influence of the plastic products on the environment, wherein part of degradable plastic raw materials are added with plant starch or plant fibers, so that the degradation of the plastic products can be realized, and meanwhile, the plastic products generate lower harmful substances after being heated, so that the influence on the health of human bodies is reduced; the plant fibers are generally straw fibers or tree fibers, so that the waste is effectively and fully utilized, and various reasonable applications of the waste are embodied;
in the crushing process of the branches, a large amount of water is contained in the fresh branches, when the crushing machine crushes the branches, the shell is fully filled with the water and the crushing rollers are filled with the water, juice of some branches is acidic, such as branches of orange trees, the juice is acidic, the acidic juice is adhered to the crushing rollers, the surface of the crushing rollers can be corroded, the crushing effect of the crushing rollers on the branches is reduced, the crushing degree of part of branches is insufficient, and the crushing is needed to be put into the crushing again, so that the production and processing effects are influenced.
Therefore, the invention provides a preparation method of the full-degradable modified plastic.
Disclosure of Invention
In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a fully-degradable modified plastic which is prepared from the following raw materials in parts by weight:
60-95 parts of base material;
30-50 parts of an additive;
the base material consists of the following raw materials in parts by weight:
20-35 parts of tapioca starch;
20-40 parts of plant fiber;
50-70 parts of biological starch degradation master batch;
30-50 parts of high-density polyethylene;
the additive consists of the following raw materials in parts by weight:
15-25 parts of a silane coupling agent;
5-10 parts of water-soluble microbial polysaccharide;
2-5 parts of polyvinyl alcohol;
3-6 parts of butyl acrylate;
plant fibers are used as raw materials of plastics, and the plant fibers can be straw fibers, tree fibers, grass fibers and the like; branches or trunks trimmed from fruit trees are generally crushed, transported to a furniture processing plant and pressed into plates or stuffed into hollow parts of the plates of furniture to achieve the aim of waste utilization; moreover, the waste plastic can be used as a raw material for degrading plastics, so that various applications of waste are realized, resources are fully utilized, the amount of waste branches used as firewood is reduced, the emission of waste gas is reduced, and the environmental protection is facilitated.
The preparation method of the fully-degradable modified plastic is used for preparing the fully-degradable modified plastic and comprises the following steps:
s1: preparing raw materials, namely preparing plant fibers with different mesh numbers according to products processed and produced by the fully-degradable modified plastic, putting branches into a pulverizer, crushing the branches into chips, and screening the chips by using 20-mesh, 40-mesh and 80-mesh screens to obtain plant fibers with different mesh numbers for later use;
s2: adding 20-35 parts by weight of tapioca starch, 20-40 parts by weight of plant fiber, 50-70 parts by weight of biological starch degradation master batch, 15-25 parts by weight of silane coupling agent, 5-10 parts by weight of water-soluble microbial polysaccharide, 2-5 parts by weight of polyvinyl alcohol and 3-6 parts by weight of butyl acrylate into a reaction kettle, heating in a water bath to 70-100 ℃, uniformly stirring and reacting for 20-30 minutes, and carrying out low-pressure reaction;
s3: after the low-pressure reaction is finished, the pressure of the reaction kettle is increased to 2.0-3.5MPa, the temperature is increased to 100-120 ℃, the stirring time is controlled to 15-20 minutes under the low-speed stirring condition of 30-70rpm, then the pressure is relieved, the vacuum degree is kept to 0.02-0.08MPa, and the flexible bulk material is kept for later use;
s4: and (3) putting the flexible dough into a dispersing machine, mixing and dispersing the flexible dough, controlling the time to be 3-6 minutes and the temperature to be 80-90 ℃, and then putting the flexible dough into a screw reaction extruder, and shearing, mixing, devolatilizing, extruding and granulating the flexible dough through the screw extruder to obtain the fully-degradable modified plastic.
Preferably, the pulverizer in S1 includes a housing, a crushing roller, and a rust prevention mechanism; the crushing rollers are rotatably connected in the shell, a feed port is arranged above the crushing rollers, and one side of each crushing roller is provided with an anti-rust mechanism; the rust prevention mechanism comprises a base block, a spray head and an oil delivery pipe; the base block is positioned at one side of the crushing roller, the base block is connected to the inner side wall of the shell, a plurality of spray heads are arranged on the side wall, opposite to the crushing roller, of the base block, and the spray heads are connected with an external oil supply pump of the shell through an oil delivery pipe; in the process of crushing branches, a large amount of water is contained in fresh branches, when the branches are crushed by a crusher, the shell is fully filled with the water and the crushing rollers are filled with the water, the juice of some branches is acidic, for example, the branches of orange trees are acidic, the acidic juice is adhered to the crushing rollers, the surface of the crushing rollers can be corroded, the crushing effect of the crushing rollers on the branches is reduced, the crushing degree of part of branches is insufficient, and the branches are required to be crushed again, so that the production and processing effects are influenced; the rust prevention mechanism is arranged in the shell, so that rust prevention oil is sprayed on the surface of the crushing roller, and corrosion of branch acid juice to the crushing roller is reduced; after the pulverizer is used, the oil delivery pipe injects rust-proof oil into the spray head, the rust-proof oil is sprayed on the surface of the crushing roller, and meanwhile the crushing roller is in a slow rotation state, so that the surface of the crushing roller is sprayed to the rust-proof oil completely, the anti-corrosion protection of the crushing roller is realized, the corrosion of the vertical acid juice to the crushing roller is reduced, the service life of the crushing roller is prolonged, and the time for effectively crushing branches is prolonged.
Preferably, a protection mechanism is arranged between the rust prevention mechanism and the crushing roller; the protection mechanism comprises a motor, a connecting rod and a baffle; the motor is a double-end output motor, the motor is fixedly connected to the side walls of the two sides of the shell, the output end of the motor is connected with one end of a connecting rod, the other end of the connecting rod is connected with a baffle plate, the baffle plate is arc-shaped and is in sliding connection with a sliding hole formed in the side wall of the shell, the inner end of the baffle plate swings in a gap between the base block and the crushing roller, and the inner end of the baffle plate is propped against the inner side wall of the shell; the broken scraps are thrown onto the base blocks along with the breaking roller and adhered to the surface of the spray head, and when serious, the scraps are dried and then the spray head is plugged, so that a protection mechanism is arranged between the protection mechanism and the breaking roller; when using the shower nozzle, driving motor, the motor is servo motor, and the motor passes through the connecting rod and drives the baffle swing for the inner of baffle moves down gradually, and the baffle no longer hides the shower nozzle, and shower nozzle blowout rust-resistant oil sprays on broken roller surface, and after the oil spout, the motor rotates, and drives the baffle to initial position, makes the baffle place between protection machanism and the broken roller again, realizes the protection to the shower nozzle, makes the shower nozzle when using once more, and rust-resistant oil can effectively spray on broken roller surface.
Preferably, a sliding layer is arranged on the inner side wall of the shell, which is propped by the baffle plate, and a lock rod and a pull rope are arranged in the sliding layer; one end of the lock rod is connected to the upper side in the sliding layer through a spring in a sliding way, the other end of the lock rod is fixedly connected with one end of the pull rope, and the other end of the pull rope is wound on the output end of the motor; an inserting rod is fixedly connected to the inner side of one end of the lock rod and is embedded into an inserting hole formed in the inner end of the baffle plate;
a sliding groove is formed in the baffle plate at a position connected with the connecting rod, and two sides of the other end of the connecting rod are connected in the sliding groove through springs; the motor drives the connecting rod to rotate, the other end of connecting rod passes through the spring to promote the baffle rotation to place between protection machanism and crushing roller, the inner of baffle is arranged in the sliding layer simultaneously, and the motor continues to rotate, and the output of motor rotates and twines the stay cord, and the other end extrusion spring of connecting rod, stay cord pulling locking lever simultaneously, locking lever move to motor direction, and the inserted bar on the locking lever inserts in the jack and realizes the fixed of baffle, prevents that the rubbing crusher when the operation, the vibration force of its production for the baffle inner is automatic breaks away from the casing inside wall, and the baffle loses the shielding effect to the shower nozzle.
Preferably, a first bag is arranged in the chute, the first bag is positioned at a position point in the chute, which is close to the crushing roller, one side of the jack is provided with a cavity, and a second bag and a bolt are arranged in the cavity; the second bag is communicated with the first bag, the second bag is extruded at the inner end of the bolt, the bolt penetrates into the jack in a sliding manner through the spring, and the end part of the bolt is embedded into a clamping groove formed in the surface of the inserted link; the other end of connecting rod extrudes a bag, and the gas in the bag is blown into in the bag No. two, and No. two bags swell to extrude the bolt, the tip of bolt extends to in the draw-in groove, realizes further fixing between inserted bar and the jack, improves the stability that the baffle sheltered from the shower nozzle.
Preferably, the base block is provided with a swinging mechanism; the swing mechanism comprises an electric push rod and a hinging rod; one end of the hinge rod is hinged on the rear side wall of the base block, the other end of the hinge rod is fixedly connected on the inner side wall of the shell, one side of the hinge rod is provided with an electric push rod, one end of the electric push rod is hinged on one side of the middle position of the base block, and the other end of the electric push rod is rotatably connected on the inner side wall; through control electricity push rod, realize the horizontal direction swing of basic block to control shower nozzle spray angle's regulation, make the rust-resistant oil that the shower nozzle sprayed out more comprehensive spray at broken roller surface, reduce broken roller surface and spray the dead angle, better protection broken roller.
Preferably, the surface of the crushing roller is provided with a plurality of guide holes, the hole ends of the guide holes are provided with push blocks, the push blocks are connected with the hole ends of the guide holes through springs, and collision balls are arranged in the guide holes; when spraying protection oil, the crushing roller slowly rotates, the impact ball rolls and hits on the push block due to self gravity, the push block pushes away the fragments on the surface of the crushing roller from the crushing roller, and meanwhile, the fragments adhered to the outer end face of the push block vibrate and fall off under the effect of impact force of the impact ball, so that the rust preventive oil sprayed by the spray head is more comprehensively sprayed on the surface of the crushing roller, the spraying dead angle on the surface of the crushing roller is reduced, and the crushing roller is better protected.
Preferably, one side wall of the guide hole is flat, and the other side wall of the guide hole is convex; the setting of guiding hole shape for the ejector pad rotates down the time of the position, and the collision ball drops to the ejector pad along protruding position on, makes the more effectual striking of collision ball on the ejector pad, if the guiding hole inside wall is the planarization form, rotates to the orientation position in-process at the push rod by horizontal position, the collision ball rolls along the guiding hole inside wall, then strikes at the ejector pad, and the impact is weaker, and the ejector pad is relatively poor to the promotion effect of piece.
Preferably, the base block is provided with a water spraying hole; the water spraying hole is communicated with an external water pump of the shell through a water pipe, is also communicated with an oil conveying pipe through a middle pipe, and is internally provided with a one-way valve; through setting up the hole for water spraying, the hole for water spraying sprays the department clear water, and the clear water is at the broken roller surface at first, washes the piece thing of surface adhesion off, then closes the water pump, drives the feed pump, and protection oil sprays on broken roller surface, reduces the piece and blockked to protection oil, more comprehensive carries out rust-resistant treatment to broken roller, and when the oil pressure was greater than the check valve and opens the threshold, part protection oil was flowed along the hole for water spraying, carries out rust-resistant protection to the hole for water spraying, avoids the hole for water spraying to be corroded by water.
The beneficial effects of the invention are as follows:
1. after the pulverizer is used, the oil delivery pipe injects rust-proof oil into the spray head, the rust-proof oil is sprayed on the surface of the crushing roller, and meanwhile the crushing roller is in a slow rotation state, so that the surface of the crushing roller is sprayed to the rust-proof oil completely, the anti-corrosion protection of the crushing roller is realized, the corrosion of the vertical acid juice to the crushing roller is reduced, the service life of the crushing roller is prolonged, and the time for effectively crushing branches is prolonged.
2. When spraying protection oil, the crushing roller slowly rotates, the impact ball rolls and hits on the push block due to self gravity, the push block pushes away the fragments on the surface of the crushing roller from the crushing roller, and meanwhile, the fragments adhered to the outer end face of the push block vibrate and fall off under the effect of impact force of the impact ball, so that the rust preventive oil sprayed by the spray head is more comprehensively sprayed on the surface of the crushing roller, the spraying dead angle on the surface of the crushing roller is reduced, and the crushing roller is better protected.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a flow chart of a method for preparing the fully degradable modified plastic in the invention;
FIG. 2 is a perspective view of the pulverizer of the present invention;
FIG. 3 is a cross-sectional view of the pulverizer of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is a diagram showing the cooperation of the base block and the electric putter in the present invention;
FIG. 6 is a cross-sectional view of a base block of the present invention;
in the figure: the crushing roller 2, the base block 3, the spray head 4, the oil delivery pipe 5, the motor 6, the connecting rod 7, the baffle 8, the sliding hole 9, the sliding layer 10, the lock rod 11, the pull rope 12, the inserted link 13, the jack 14, the sliding chute 15, the first bag 16, the second bag 17, the bolt 18, the clamping groove 19, the electric push rod 20, the hinging rod 21, the guide hole 22, the push block 23, the collision ball 24, the water spraying hole 25 and the one-way valve 26.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Embodiment one:
the fully-degradable modified plastic consists of the following raw materials in parts by weight:
60-95 parts of base material;
30-50 parts of an additive;
the base material consists of the following raw materials in parts by weight:
20-35 parts of tapioca starch;
20-40 parts of plant fiber;
50-70 parts of biological starch degradation master batch;
30-50 parts of high-density polyethylene;
the additive consists of the following raw materials in parts by weight:
15-25 parts of a silane coupling agent;
5-10 parts of water-soluble microbial polysaccharide;
2-5 parts of polyvinyl alcohol;
3-6 parts of butyl acrylate;
plant fibers are used as raw materials of plastics, and the plant fibers can be straw fibers, tree fibers, grass fibers and the like; branches or trunks trimmed from fruit trees are generally crushed, transported to a furniture processing plant and pressed into plates or stuffed into hollow parts of the plates of furniture to achieve the aim of waste utilization; moreover, the waste plastic can be used as a raw material for degrading plastics, so that various applications of waste are realized, resources are fully utilized, the amount of waste branches used as firewood is reduced, the emission of waste gas is reduced, and the environmental protection is facilitated.
Referring to fig. 1, a method for preparing a fully degradable modified plastic as described above, the method comprising the steps of:
s1: preparing raw materials, namely preparing plant fibers with different mesh numbers according to products processed and produced by the fully-degradable modified plastic, putting branches into a pulverizer, crushing the branches into chips, and screening the chips by using 20-mesh, 40-mesh and 80-mesh screens to obtain plant fibers with different mesh numbers for later use;
s2: adding 20-35 parts by weight of tapioca starch, 20-40 parts by weight of plant fiber, 50-70 parts by weight of biological starch degradation master batch, 15-25 parts by weight of silane coupling agent, 5-10 parts by weight of water-soluble microbial polysaccharide, 2-5 parts by weight of polyvinyl alcohol and 3-6 parts by weight of butyl acrylate into a reaction kettle, heating in a water bath to 70-100 ℃, uniformly stirring and reacting for 20-30 minutes, and carrying out low-pressure reaction;
s3: after the low-pressure reaction is finished, the pressure of the reaction kettle is increased to 2.0-3.5MPa, the temperature is increased to 100-120 ℃, the stirring time is controlled to 15-20 minutes under the low-speed stirring condition of 30-70rpm, then the pressure is relieved, the vacuum degree is kept to 0.02-0.08MPa, and the flexible bulk material is kept for later use;
s4: and (3) putting the flexible dough into a dispersing machine, mixing and dispersing the flexible dough, controlling the time to be 3-6 minutes and the temperature to be 80-90 ℃, and then putting the flexible dough into a screw reaction extruder, and shearing, mixing, devolatilizing, extruding and granulating the flexible dough through the screw extruder to obtain the fully-degradable modified plastic.
Referring to fig. 2 to 3, the pulverizer in S1 includes a housing 1, a crushing roller 2, and a rust prevention mechanism; the crushing rollers 2 are rotatably connected in the shell 1, a feed port is arranged above the crushing rollers 2, and one side of each crushing roller 2 is provided with an anti-rust mechanism; the rust prevention mechanism comprises a base block 3, a spray head 4 and an oil delivery pipe 5; the base block 3 is positioned at one side of the crushing roller 2, the base block 3 is connected to the inner side wall of the shell 1, a plurality of spray heads 4 are arranged on the side wall, opposite to the crushing roller 2, of the base block 3, and the spray heads 4 are connected with an external oil supply pump of the shell 1 through an oil delivery pipe 5; in the process of crushing branches, a large amount of water exists in fresh branches, when the branches are crushed by a crusher, the water is fully distributed in a shell 1 and on a crushing roller 2, the juice of some branches is acidic, for example, the branches of orange trees are acidic, the acidic juice is adhered to the crushing roller 2, the surface of the crushing roller 2 can be corroded, the crushing effect of the crushing roller 2 on the branches is reduced, the crushing degree of part of branches is insufficient, and the branches are crushed again, so that the production and processing effects are influenced; the rust prevention mechanism is arranged in the shell 1, and rust prevention oil is sprayed on the surface of the crushing roller 2, so that corrosion of branch acid juice to the crushing roller 2 is reduced; after the pulverizer is used, the oil delivery pipe 5 injects rust preventive oil into the spray head 4, the rust preventive oil is sprayed on the surface of the crushing roller 2, and meanwhile, the crushing roller 2 is in a slow rotation state, so that the surface of the crushing roller 2 is sprayed to the rust preventive oil completely, the anti-corrosion protection of the crushing roller 2 is realized, the corrosion of the vertical acid juice to the crushing roller 2 is reduced, the service life of the crushing roller 2 is prolonged, and the time for effectively crushing branches is prolonged.
Referring to fig. 3-4, a protection mechanism is arranged between the rust prevention mechanism and the crushing roller 2; the protection mechanism comprises a motor 6, a connecting rod 7 and a baffle 8; the motor 6 is a double-end output motor 6, the motor 6 is fixedly connected to the side walls of the two sides of the shell 1, the output end of the motor 6 is fixedly connected with one end of a connecting rod 7, the other end of the connecting rod 7 is connected with a baffle plate 8, the baffle plate 8 is arc-shaped, the baffle plate 8 is slidably connected in a sliding hole 9 formed in the side wall of the shell 1, the inner end of the baffle plate 8 swings in a gap between the base block 3 and the crushing roller 2, and the inner end of the baffle plate 8 is propped against the inner side wall of the shell 1; the broken scraps are thrown onto the base block 3 along with the breaking roller 2 and adhered to the surface of the spray head 4, and when serious, the scraps are dried and then the spray head 4 is plugged, so that a protection mechanism is arranged between the protection mechanism and the breaking roller 2; when using shower nozzle 4, driving motor 6, motor 6 is servo motor 6, and motor 6 passes through connecting rod 7 and drives baffle 8 swing for baffle 8's inner moves down gradually, and baffle 8 no longer hides shower nozzle 4, and shower nozzle 4 blowout rust-resistant oil sprays on broken roller 2 surface, and after the oil spout finishes, motor 6 rotates, and drives baffle 8 to initial position, makes baffle 8 arrange protective mechanism and broken roller 2 again between, realizes the protection to shower nozzle 4, when making shower nozzle 4 use once more, rust-resistant oil can effectively spray on broken roller 2 surface.
Referring to fig. 4, a sliding layer 10 is arranged on the inner side wall of the shell 1 on which the baffle 8 is propped, and a lock rod 11 and a pull rope 12 are arranged in the sliding layer 10; one end of the lock rod 11 is connected to the upper side in the sliding layer 10 in a sliding way through a spring, the other end of the lock rod 11 is fixedly connected with one end of a pull rope 12, and the other end of the pull rope 12 is wound on the output end of the motor 6; an inserting rod 13 is fixedly connected to the inner side of one end of the lock rod 11, and the inserting rod 13 is embedded into an inserting hole 14 formed in the inner end of the baffle 8;
a chute 15 is formed at a position on the baffle 8, which is connected with the connecting rod 7, and two sides of the other end of the connecting rod 7 are connected in the chute 15 through springs; the motor 6 drives the connecting rod 7 to rotate, the other end of the connecting rod 7 drives the baffle 8 to rotate through the spring, and is arranged between the protection mechanism and the crushing roller 2, meanwhile, the inner end of the baffle 8 is arranged in the sliding layer 10, the motor 6 continues to rotate, the output end of the motor 6 rotates and winds the pull rope 12, the other end of the connecting rod 7 extrudes the spring, meanwhile, the pull rope 12 pulls the lock rod 11, the lock rod 11 moves towards the motor 6, the inserting rod 13 on the lock rod 11 is inserted into the inserting hole 14 to fix the baffle 8, vibration force generated by the pulverizer is prevented when the pulverizer runs, the inner end of the baffle 8 is automatically separated from the inner side wall of the shell 1, and the baffle 8 loses shielding effect on the spray head 4.
Referring to fig. 3-4, a first bag 16 is arranged in the chute 15, the first bag 16 is positioned at a position point in the chute 15 close to the crushing roller 2, a cavity is formed at one side of the jack 14, and a second bag 17 and a bolt 18 are arranged in the cavity; the second bag 17 is communicated with the first bag 16, the second bag is extruded at the inner end of the bolt 18, the bolt 18 penetrates into the jack 14 in a sliding manner through a spring, and the end part of the bolt is embedded into a clamping groove 19 formed in the surface of the inserted link 13; the other end of the connecting rod 7 extrudes a first bag 16, gas in the first bag 16 is blown into a second bag 17, the second bag 17 bulges and extrudes a bolt 18, the end part of the bolt 18 extends into a clamping groove 19, further fixation between the inserted rod 13 and the jack 14 is achieved, and the stability of shielding of the baffle 8 to the spray head 4 is improved.
Referring to fig. 5, the base block 3 is provided with a swinging mechanism; the swing mechanism comprises an electric push rod 20 and a hinging rod 21; one end of the hinging rod 21 is hinged on the rear side wall of the base block 3, the other end of the hinging rod 21 is fixedly connected on the inner side wall of the shell 1, one side of the hinging rod 21 is an electric push rod 20, one end of the electric push rod 20 is hinged on one side of the middle position of the base block 3, and the other end of the electric push rod 20 is rotatably connected on the inner side wall; through control electric push rod 20, realize the horizontal direction swing of basic block 3 to control shower nozzle 4 spray angle's regulation, make the rust-resistant oil that shower nozzle 4 sprayed more comprehensive spray at crushing roller 2 surface, reduce crushing roller 2 surface and spray the dead angle, better protection crushing roller 2.
Referring to fig. 3, the surface of the crushing roller 2 is provided with a plurality of guide holes 22, the hole ends of the guide holes 22 are provided with push blocks 23, the push blocks 23 are connected with the hole ends of the guide holes 22 through springs, and collision balls 24 are arranged in the guide holes 22; when spraying protection oil, the crushing roller 2 slowly rotates, the collision ball 24 rolls and hits on the push block 23 due to self gravity, the push block 23 pushes away the fragments on the surface of the crushing roller 2 from the crushing roller 2, and meanwhile, the fragments adhered to the outer end face of the push block 23 vibrate and fall off under the action of the impact force of the collision ball 24, so that the rust preventive oil sprayed by the spray head 4 is more comprehensively sprayed on the surface of the crushing roller 2, the spraying dead angle on the surface of the crushing roller 2 is reduced, and the crushing roller 2 is better protected.
Referring to fig. 3, one side wall of the guiding hole 22 is flat, and the other side wall of the guiding hole 22 is convex; the setting of guiding hole 22 shape for when ejector pad 23 rotated to the downward position, collision ball 24 dropped onto ejector pad 23 along protruding position, makes collision ball 24 more effective beat on ejector pad 23, provided that guiding hole 22 inside wall is the planarization form, rotates to the orientation position in-process at the push rod by the horizontal position, and collision ball 24 rolls along guiding hole 22 inside wall, then hits at ejector pad 23, and the impact is weaker, and ejector pad 23 is relatively poor to the promotion effect of piece.
Embodiment two:
referring to fig. 6, a comparative example one, as another embodiment of the present invention, is provided with a water spray hole 25 on the base block 3; the water spraying hole 25 is communicated with an external water pump of the shell 1 through a water pipe, the water spraying hole 25 is also communicated with the oil conveying pipe 5 through a middle pipe, and a one-way valve 26 is arranged in the middle pipe; through setting up the hole for water spraying 25, the hole for water spraying 25 sprays the clean water of department, and the clear water is at first strikeed on broken roller 2 surface, washes the piece thing of surface adhesion off, then closes the water pump, drives the feed pump, and the protection oil sprays on broken roller 2 surface, reduces the piece and blockked the protection oil, more comprehensive carries out rust-resistant treatment to broken roller 2, and when the oil pressure is greater than check valve 26 and opens the threshold, partial protection oil flows along hole for water spraying 25, carries out rust-resistant protection to hole for water spraying 25, avoids hole for water spraying 25 to be corroded by water.
Working principle: in the process of crushing branches, a large amount of water exists in fresh branches, when the branches are crushed by a crusher, the water is fully distributed in a shell 1 and on a crushing roller 2, the juice of some branches is acidic, for example, the branches of orange trees are acidic, the acidic juice is adhered to the crushing roller 2, the surface of the crushing roller 2 can be corroded, the crushing effect of the crushing roller 2 on the branches is reduced, the crushing degree of part of branches is insufficient, and the branches are crushed again, so that the production and processing effects are influenced; the rust prevention mechanism is arranged in the shell 1, and rust prevention oil is sprayed on the surface of the crushing roller 2, so that corrosion of branch acid juice to the crushing roller 2 is reduced; after the use of the crusher is finished, the oil delivery pipe 5 injects rust-proof oil into the spray head 4, the rust-proof oil is sprayed on the surface of the crushing roller 2, and meanwhile, the crushing roller 2 is in a slow rotation state, so that all the surface of the crushing roller 2 is sprayed by the rust-proof oil, the anti-corrosion protection of the crushing roller 2 is realized, the corrosion of vertical acid juice to the crushing roller 2 is reduced, the service life of the crushing roller 2 is prolonged, and the effective branch crushing time is prolonged;
the broken scraps are thrown onto the base block 3 along with the breaking roller 2 and adhered to the surface of the spray head 4, and when serious, the scraps are dried and then the spray head 4 is plugged, so that a protection mechanism is arranged between the protection mechanism and the breaking roller 2; when the spray head 4 is used, the motor 6 is driven, the motor 6 is a servo motor 6, the motor 6 drives the baffle plate 8 to swing through the connecting rod 7, so that the inner end of the baffle plate 8 gradually moves downwards, the baffle plate 8 does not shade the spray head 4 any more, the spray head 4 sprays anti-rust oil on the surface of the crushing roller 2, after the oil spraying is finished, the motor 6 rotates, the baffle plate 8 is driven to an initial position, the baffle plate 8 is placed between the protection mechanism and the crushing roller 2 again, the protection of the spray head 4 is realized, and when the spray head 4 is used again, the anti-rust oil can be effectively sprayed on the surface of the crushing roller 2;
the motor 6 drives the connecting rod 7 to rotate, the other end of the connecting rod 7 drives the baffle 8 to rotate through the spring and is arranged between the protection mechanism and the crushing roller 2, meanwhile, the inner end of the baffle 8 is arranged in the sliding layer 10, the motor 6 continues to rotate, the output end of the motor 6 rotates and winds the pull rope 12, the other end of the connecting rod 7 extrudes the spring, meanwhile, the pull rope 12 pulls the lock rod 11, the lock rod 11 moves towards the motor 6, the inserting rod 13 on the lock rod 11 is inserted into the inserting hole 14 to fix the baffle 8, vibration force generated by the pulverizer is prevented when the pulverizer runs, the inner end of the baffle 8 is automatically separated from the inner side wall of the shell 1, and the baffle 8 loses shielding effect on the spray head 4;
the other end of the connecting rod 7 extrudes a first bag 16, gas in the first bag 16 is blown into a second bag 17, the second bag 17 bulges and extrudes a bolt 18, the end part of the bolt 18 extends into a clamping groove 19, further fixation between the inserted rod 13 and the jack 14 is realized, and the stability of shielding of the baffle 8 to the spray head 4 is improved; the horizontal swinging of the base block 3 is realized by controlling the electric push rod 20, so that the spray angle of the spray head 4 is controlled to be adjusted, the rust-preventive oil sprayed by the spray head 4 is more comprehensively sprayed on the surface of the crushing roller 2, the spraying dead angle of the surface of the crushing roller 2 is reduced, and the crushing roller 2 is better protected; when the protective oil is sprayed, the crushing roller 2 slowly rotates, the collision ball 24 rolls and hits the push block 23 due to self gravity, the push block 23 pushes the scraps on the surface of the crushing roller 2 away from the crushing roller 2, and meanwhile, the scraps adhered to the outer end surface of the push block 23 vibrate and fall off under the action of the impact force of the collision ball 24, so that the rust preventive oil sprayed by the spray head 4 is more comprehensively sprayed on the surface of the crushing roller 2, the spraying dead angle of the surface of the crushing roller 2 is reduced, and the crushing roller 2 is better protected;
the setting of guiding hole 22 shape for when ejector pad 23 rotated to the downward position, collision ball 24 dropped onto ejector pad 23 along protruding position, makes collision ball 24 more effective beat on ejector pad 23, provided that guiding hole 22 inside wall is the planarization form, rotates to the orientation position in-process at the push rod by the horizontal position, and collision ball 24 rolls along guiding hole 22 inside wall, then hits at ejector pad 23, and the impact is weaker, and ejector pad 23 is relatively poor to the promotion effect of piece.
The front, rear, left, right, up and down are all based on fig. 1 in the drawings of the specification, the face of the device facing the observer is defined as front, the left side of the observer is defined as left, and so on, according to the viewing angle of the person.
In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. A preparation method of a full-degradable modified plastic is characterized by comprising the following steps: the fully degradable modified plastic consists of the following raw materials in parts by weight:
60-95 parts of base material;
30-50 parts of an additive;
the base material consists of the following raw materials in parts by weight:
20-35 parts of tapioca starch;
20-40 parts of plant fiber;
50-70 parts of biological starch degradation master batch;
30-50 parts of high-density polyethylene;
the additive consists of the following raw materials in parts by weight:
15-25 parts of a silane coupling agent;
5-10 parts of water-soluble microbial polysaccharide;
2-5 parts of polyvinyl alcohol;
3-6 parts of butyl acrylate;
the preparation method of the fully-degradable modified plastic comprises the following steps:
s1: preparing raw materials, namely preparing plant fibers with different mesh numbers according to products processed and produced by the fully-degradable modified plastic, putting branches into a pulverizer, crushing the branches into chips, and screening the chips by using 20-mesh, 40-mesh and 80-mesh screens to obtain plant fibers with different mesh numbers for later use;
s2: adding 20-35 parts by weight of tapioca starch, 20-40 parts by weight of plant fiber, 50-70 parts by weight of biological starch degradation master batch, 15-25 parts by weight of silane coupling agent, 5-10 parts by weight of water-soluble microbial polysaccharide, 2-5 parts by weight of polyvinyl alcohol and 3-6 parts by weight of butyl acrylate into a reaction kettle, heating in a water bath to 70-100 ℃, uniformly stirring and reacting for 20-30 minutes, and carrying out low-pressure reaction;
s3: after the low-pressure reaction is finished, the pressure of the reaction kettle is increased to 2.0-3.5MPa, the temperature is increased to 100-120 ℃, the stirring time is controlled to 15-20 minutes under the low-speed stirring condition of 30-70rpm, then the pressure is relieved, the vacuum degree is kept to 0.02-0.08MPa, and the flexible bulk material is kept for later use;
s4: putting the flexible dough into a dispersing machine, mixing and dispersing the flexible dough for 3-6 minutes, controlling the temperature to be 80-90 ℃, and then putting the flexible dough into a screw reaction extruder, and shearing, mixing, devolatilizing, extruding and granulating the flexible dough through the screw extruder to obtain the fully degradable modified plastic;
the pulverizer in S1 comprises a shell (1), a crushing roller (2) and an anti-rust mechanism; the crushing rollers (2) are rotatably connected in the shell (1), a feeding port is arranged above the crushing rollers (2), and one side of each crushing roller (2) is provided with an anti-rust mechanism; the rust prevention mechanism comprises a base block (3), a spray head (4) and an oil delivery pipe (5); the base block (3) is positioned at one side of the crushing roller (2), the base block (3) is connected to the inner side wall of the shell (1), a plurality of spray heads (4) are arranged on the side wall, opposite to the crushing roller (2), of the base block (3), and the spray heads (4) are connected with an external oil supply pump of the shell (1) through an oil delivery pipe (5);
a protection mechanism is arranged between the rust prevention mechanism and the crushing roller (2); the protection mechanism comprises a motor (6), a connecting rod (7) and a baffle (8); the motor (6) is a double-end output motor (6), the motor (6) is fixedly connected to the side walls of the two sides of the shell (1), the output end of the motor (6) is connected with one end of a connecting rod (7), the other end of the connecting rod (7) is connected with a baffle plate (8), the baffle plate (8) is arc-shaped, the baffle plate (8) is slidably connected in a sliding hole (9) formed in the side wall of the shell (1), the inner end of the baffle plate (8) swings in a gap between the base block (3) and the crushing roller (2), and the inner end of the baffle plate (8) is propped against the inner side wall of the shell (1);
a sliding layer (10) is arranged on the inner side wall of the shell (1) which is propped by the baffle (8), and a lock rod (11) and a pull rope (12) are arranged in the sliding layer (10); one end of the lock rod (11) is connected to the upper side in the sliding layer (10) in a sliding way through a spring, the other end of the lock rod (11) is fixedly connected with one end of a pull rope (12), and the other end of the pull rope (12) is wound on the output end of the motor (6); an inserting rod (13) is fixedly connected to the inner side of one end of the lock rod (11), and the inserting rod (13) is embedded into an inserting hole (14) formed in the inner end of the baffle plate (8);
a chute (15) is formed in a position point of the baffle (8) connected with the connecting rod (7), and two sides of the other end of the connecting rod (7) are connected in the chute (15) through springs;
a first bag (16) is arranged in the chute (15), the first bag (16) is positioned at a position point, close to the crushing roller (2), in the chute (15), one side of the jack (14) is provided with a cavity, and a second bag (17) and a bolt (18) are arranged in the cavity; the second bag (17) is communicated with the first bag (16), the second bag is extruded at the inner end of the bolt (18), the bolt (18) penetrates into the jack (14) in a sliding manner through a spring, and the end part of the bolt is embedded into a clamping groove (19) formed in the surface of the inserted rod (13);
the surface of the crushing roller (2) is provided with a plurality of guide holes (22), the hole ends of the guide holes (22) are provided with push blocks (23), the push blocks (23) are connected to the hole ends of the guide holes (22) through springs, and collision balls (24) are arranged in the guide holes (22);
a swinging mechanism is arranged on the base block (3); the swing mechanism comprises an electric push rod (20) and a hinging rod (21); one end ball of articulated pole (21) articulates on the back lateral wall of basic block (3), and the other end rigid coupling of articulated pole (21) is on casing (1) inside wall, and articulated pole (21) one side is electric push rod (20), and the one end ball of electric push rod (20) articulates on basic block (3) intermediate position one side, but the other end rotation of electric push rod (20) is connected on the inside wall.
2. The method for preparing the fully degradable modified plastic according to claim 1, which is characterized in that: a water spraying hole (25) is formed in the base block (3); the water spraying hole (25) is communicated with an external water pump of the shell (1) through a water pipe, the water spraying hole (25) is also communicated with the oil delivery pipe (5) through a middle pipe, and a one-way valve (26) is arranged in the middle pipe.
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| CN108908790B (en) * | 2018-06-26 | 2020-09-25 | 朱晓萍 | Waste plastic recovery processing system |
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| WO2006066478A1 (en) * | 2004-12-20 | 2006-06-29 | Mingzhong Chen | A biodegradable starch-based master batch and a method for preparing the same |
| CN101870774A (en) * | 2010-05-10 | 2010-10-27 | 梁雄辉 | Biological starch degradable plastic master batches, production method and degradable plastic thereof |
| CN107698950A (en) * | 2017-10-25 | 2018-02-16 | 芜湖市纯至网络科技有限公司 | A kind of plastics and production technology with degradation function |
| CN212812883U (en) * | 2020-08-21 | 2021-03-30 | 石家庄沃田机械制造有限公司 | Novel corn stalk rubbing crusher |
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