CN108264742A - A kind of mechanism and preparation method of oxidative biodegradation self-adhesive film - Google Patents

A kind of mechanism and preparation method of oxidative biodegradation self-adhesive film Download PDF

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Publication number
CN108264742A
CN108264742A CN201810114730.2A CN201810114730A CN108264742A CN 108264742 A CN108264742 A CN 108264742A CN 201810114730 A CN201810114730 A CN 201810114730A CN 108264742 A CN108264742 A CN 108264742A
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China
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motor
shaft
supporting rack
connecting shaft
self
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CN201810114730.2A
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Chinese (zh)
Inventor
张建华
张博
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TIANJIN JIANNA WOTE PLASTICIZATION TECHNOLOGY Co Ltd
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TIANJIN JIANNA WOTE PLASTICIZATION TECHNOLOGY Co Ltd
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Priority to CN201810114730.2A priority Critical patent/CN108264742A/en
Publication of CN108264742A publication Critical patent/CN108264742A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/06—Polyethene
    • 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
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention belongs to oxidative biodegradation technical field of membrane,More particularly to a kind of mechanism and preparation method of oxidative biodegradation self-adhesive film,Including agitating device,Comminutor,Coextrusion film blowing machine,Printing device,The printing device includes pedestal,Upper graining roll is equipped with above the self-adhesive film,Lower graining roll is equipped with below the self-adhesive film,The upper graining roll side is connected with connecting shaft on first,Opposite side is connected with connecting shaft on second,The lower graining roll side is connected with first time connecting shaft,Opposite side is connected with second time connecting shaft,The pedestal side is equipped with positive rotating motor,Opposite side is equipped with reversion motor,The positive rotating motor is connected with positive shaft,The positive shaft,Connecting shaft on first,It is cased with rotating forward synchronous belt outside first time connecting shaft,The reversion motor is connected with reversing shaft,The reversing shaft,Connecting shaft on second,Reversal synchronization band is cased with outside second time connecting shaft.

Description

A kind of mechanism and preparation method of oxidative biodegradation self-adhesive film
Technical field
The invention belongs to oxidative biodegradation technical field of membrane more particularly to a kind of mechanism of oxidative biodegradation self-adhesive film With preparation method.
Background technology
With economic rapid development, people are to the destruction getting worse of environment, especially nondegradable plastics, by people Arbitrarily throw out without care after, due to being not easy, by soil microbial degradation, to be deposited in soil for a long time, caused to ecological environment serious Pollution.Disposable tableware, Phthalates and agricultural mulching etc. are difficult to be recycled, traditional processing method with Based on burning and burying.Burning can generate a large amount of pernicious gas, pollute environment；It buries in the then polymer short time therein not It can be decomposed by the microorganisms, also pollute environment.The residual plastic foil abandoned is present in soil, hinders the development of crop root system and to water Divide, the absorption of nutrient, reduce the gas permeability of soil, lead to crop production reduction；After action eats the residual plastic foil abandoned, intestines can be caused Obstruction and it is dead；The synthetic netting and fishline being lost in ocean or discard in ocean cause phase to marine organisms When harm, therefore advocate green consumption with reinforcement environmental protection it is imperative.
In order to reduce white pollution, preserving the ecological environment, people start to study degredation plastic, and the of research Generation degradative plastics is degradation plastic, and this degradation plastic is added to dropping for sub-fraction on the basis of original raw material Solution masterbatch or starch-based initial material, major part cannot degrade, and also be unfavorable for the recycling and reconstruction of plastics；The of research Two generation degradative plastics are complete biodegradable plastics, utilize Microbe synthesis material, natural macromolecular material and synthesis macromolecule The technologies such as material are manufactured, although this plastics within a certain period of time can complete natural decomposition, due to technical difficulty It is larger, it is not easy to implement, and cost is also higher, is unfavorable for promoting the use of on a large scale；The third generation degradative plastics of research is oxidation Biodegradable plastic is to coordinate various prodegradants using organism-based raw material, using degradable core technology, makes biology base various Packaging film reaches complete biodegradable.
At present, the method for manufacturing oxidized-biodegradable plastic is predominantly stirred by agitating device first, then by making Grain machine is granulated, and finally by coextrusion film blowing machine blowfilm shaping, but with the continuous improvement of living standards, people are for self-adhesive film Aesthetic it is higher and higher, the self-adhesive film of traditional pure color can not meet the needs of people.
Invention content
The present invention provides a kind of mechanism and preparation method of oxidative biodegradation self-adhesive film, to solve in above-mentioned background technology The problem of self-adhesive film of the pure color of proposition is unable to meet demand.
Technical problem solved by the invention is realized using following technical scheme：
A kind of mechanism and preparation method of oxidative biodegradation self-adhesive film, including agitating device, comminutor, coextrusion film blowing machine, print Embossing device, the agitating device are connect with comminutor, and the comminutor is connect with coextrusion film blowing machine, the coextrusion film blowing machine and print Embossing device connects；
The agitating device includes stirring casing, and the stirring cabinet top is equipped with stirring cover, and the blender side of covering is set There is stirring motor, the blender is covered equipped with straight slot, and the stirring motor bottom is equipped with rotary shaft, and the rotary shaft passes through logical Slot is located in stirring casing, and the rotary shaft side is equipped with stirring rod；
The comminutor includes conveying storehouse, cutting storehouse, output storehouse, and the top in the conveying storehouse is equipped with feed inlet, the conveying storehouse Interior to be equipped with conveying screw rod, described conveying screw rod one end is connected with feeder motor, and the conveying storehouse other end is connect with cutting storehouse, institute It states and cutter is equipped in cutting storehouse, described cutter one end is connected with cutting motor, and the bottom in the cutting storehouse is connect with output storehouse, institute It states in output storehouse and is equipped with output screw, the output screw is connected with output motor；
The coextrusion film blowing machine includes outer die body, is equipped with core model in the external mold body, and the outer die body includes first layer external mold, the Two layers of external mold, third layer external mold, bed die, between the first layer external mold, second layer external mold be equipped with first layer runner, described second Second layer runner is equipped between layer external mold, third layer external mold, third layer runner, institute are equipped between the third layer external mold, bed die It states and mouth mold is equipped with above first layer external mold, top layer runner, the top layer runner, the first laminar flow are equipped between the mouth mold and core model Road, second layer runner, third layer runner communicate；
The printing device includes pedestal, and the pedestal is equipped with the first supporting rack, the second supporting rack, first supporting rack one Side is equipped with motor, first time motor on first, and motor is connected with rotary shaft on first on described first, rotary shaft on described first Pressure roller on first is connected with across the first supporting rack, first time motor is connected with the first Shaft, first backspin Shaft is connected with the first lower compression roller across the first supporting rack, and the second supporting rack side is equipped with motor on second, second time electricity Machine, motor is connected with rotary shaft on second on described second, and rotary shaft is connected with second across the second supporting rack on described second Upper pressure roller, second time motor are connected with the second Shaft, and second Shaft is connected with across the second supporting rack Second lower compression roller is equipped with self-adhesive film between first supporting rack, the second supporting rack, described self-adhesive film one end, which is located on first, presses Between roller, the first lower compression roller, the other end is located on second between pressure roller, the second lower compression roller, and upper print is equipped with above the self-adhesive film Flower roller, the self-adhesive film lower section are equipped with lower graining roll, and the upper graining roll side is connected with connecting shaft on first, opposite side connection There is connecting shaft on second, the lower graining roll side is connected with first time connecting shaft, and opposite side is connected with second time connecting shaft, institute Pedestal side is stated equipped with positive rotating motor, opposite side is equipped with reversion motor, and the positive rotating motor is connected with positive shaft, the rotating forward Axis, is cased with rotating forward synchronous belt connecting shaft on first outside first time connecting shaft, and the reversion motor is connected with reversing shaft, described Reversing shaft, is cased with reversal synchronization band at connecting shaft on second outside second time connecting shaft.
The lower section of the positive rotating motor is equipped with the first supporting rack, and the lower section of the reversion motor is equipped with the second supporting rack.
Pressure roller is located at the top of the first lower compression roller on described first, and pressure roller is located at the upper of the second lower compression roller on described second Side.
Raw material is further included, the raw material includes Praseodymium Stearate, hydrotalcite powder, octyl ferrocene, strontium stearate, tourmaline Powder, resorcinol monobenzoate, 4- methylols -2,6- DI-tert-butylphenol compounds, high density polyethylene (HDPE), low density polyethylene (LDPE), line Property low density polyethylene (LDPE), polylactic acid, nano silicon dioxide, 3- aminopropyl triethoxysilanes, Lanthanum Stearate, low density polyethylene Alkene, linear low density polyethylene.
Beneficial effects of the present invention are：
1 the technical program makes self-adhesive film more beautiful by increasing printing device, meets the consumption concept of modern people, it is deep by Everybody likes that implementation result is ideal.
2 by setting upper and lower graining roll, can realize a duplex pringing, improves efficiency, energy saving, operation side Just.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structure diagram of agitating device of the present invention；
Fig. 3 is the structure diagram of comminutor of the present invention；
Fig. 4 is the structure diagram of coextrusion film blowing machine of the present invention；
Fig. 5 is the structure diagram of printing device of the present invention.
In figure：1- agitating devices, 2- comminutors, 3- coextrusion film blowing machines, 4- printing devices, 5- stirring casings, 6- blenders Lid, 7- stirring motors, 8- rotary shafts, 9- stirring rods, 10- conveyings storehouse, 11- cuttings storehouse, 12- outputs storehouse, 13- feed inlets, 14- are defeated Send screw rod, 15- feeder motors, 16- cutters, 17- cutting motors, 18- output screws, 19- output motors, the outer die bodys of 20-, 21- Core model, 22- first layer external molds, 23- second layer external molds, 24- third layer external molds, 25- bed dies, 26- first layer runners, 27- second Laminar flow road, 28- third layer runners, 29- mouth molds, 30- top layer runners, 31- pedestals, the first supporting racks of 32-, the second supporting racks of 33-, Rotary shaft on 34- first, motor on 35- first, pressure roller on 36- first, the first Shafts of 37-, first time motor of 38-, 39- First lower compression roller, rotary shaft on 40- second, motor on 41- second, pressure roller on 42- second, the second Shafts of 43-, 44- Two times motors, the second lower compression rollers of 45-, 46- self-adhesive films, the upper graining rolls of 47-, graining roll under 48-, connecting shaft on 49- first, 50- First time connecting shaft, the positive rotating motors of 51-, the positive shafts of 52-, 53- rotate forward synchronous belt, connecting shaft on 54- second, connect under 55- second Spindle, 56- reversing shafts, 57- reversal synchronization bands, 58- reversion motors, the first supporting racks of 59-, the second supporting racks of 60-.
A kind of mechanism and preparation method of oxidative biodegradation self-adhesive film, blow including raw material, agitating device 1, comminutor 2, co-extrusion Film machine 3, printing device 4, agitating device 1 are connect with comminutor 2, and comminutor 2 is connect with coextrusion film blowing machine 3, coextrusion film blowing machine 3 with Printing device 4 connects；
Raw material includes Praseodymium Stearate, hydrotalcite powder, octyl ferrocene, strontium stearate, tourmaline powder, resorcinol list benzoic acid Ester, 4- methylols -2,6- DI-tert-butylphenol compounds, high density polyethylene (HDPE), low density polyethylene (LDPE), linear low density polyethylene, poly- breast Acid, nano silicon dioxide, 3- aminopropyl triethoxysilanes, Lanthanum Stearate, low density polyethylene (LDPE), linear low density polyethylene；
Agitating device 1 includes stirring casing 5, and 5 top of stirring casing is equipped with stirring cover 6, and 6 top of stirring cover is equipped with stirring electricity Machine 7, stirring cover 6 are equipped with straight slot, and 7 bottom of stirring motor is equipped with rotary shaft 8, and rotary shaft 8 passes through straight slot to be located at stirring casing 5 Interior, 8 side of rotary shaft is equipped with stirring rod 9；
Comminutor 2 includes conveying storehouse 10, cutting storehouse 11, output storehouse 12, and the top in conveying storehouse 10 is equipped with feed inlet 13, conveys storehouse 10 Interior to be equipped with conveying screw rod 14,14 one end of conveying screw rod is connected with feeder motor 15, and conveying 10 other end of storehouse is connect with cutting storehouse 11, It cuts and cutter 16 is equipped in storehouse 11,16 one end of cutter is connected with cutting motor 17, and the bottom for cutting storehouse 11 is connect with output storehouse 12, It exports and output screw 18 is equipped in storehouse 12, output screw 18 is connected with output motor 19；
Coextrusion film blowing machine 3 includes outer die body 20, is equipped with core model 21 in outer die body 20, and outer die body 20 includes first layer external mold 22, the Two layers of external mold 23, third layer external mold 24, bed die 25 are equipped with first layer runner 26 between first layer external mold 22, second layer external mold 23, Second layer runner 27 is equipped between second layer external mold 23, third layer external mold 24, third is equipped between third layer external mold 24, bed die 25 Laminar flow road 28,22 top of first layer external mold are equipped with mouth mold 29, top layer runner 30, top layer runner are equipped between mouth mold 29 and core model 21 30th, first layer runner 26, second layer runner 27, third layer runner 28 communicate；
Printing device 4 includes pedestal 31, and pedestal 31 is equipped with the first supporting rack 32, the second supporting rack 33, the first supporting rack 32 1 Side is equipped with motor 35, first time motor 38 on first, and motor 35 is connected with rotary shaft 34 on first on first, rotary shaft on first 34 are connected with pressure roller 36 on first across the first supporting rack 32, and first time motor 38 is connected with the first Shaft 37, under first Rotary shaft 37 is connected with the first lower compression roller 39 across the first supporting rack 32,33 side of the second supporting rack be equipped with motor 41 on second, Second time motor 45, motor 41 is connected with rotary shaft 40 on second on second, and rotary shaft 40 passes through the second supporting rack 33 on second Pressure roller 42 on second are connected with, second time motor 45 is connected with the second Shaft 43, and the second Shaft 43 passes through second Support 33 is connected with the second lower compression roller 44, and self-adhesive film 46, self-adhesive film 46 1 are equipped between the first supporting rack 32, the second supporting rack 33 End is located on first between pressure roller 36, the first lower compression roller 39, and the other end is located on second between pressure roller 42, the second lower compression roller 44, Pressure roller 36 is located at the top of the first lower compression roller 39 on first, and pressure roller 42 is located at the top of the second lower compression roller 44, self-adhesive film on second 46 tops are equipped with upper graining roll 47, and 46 lower section of self-adhesive film is equipped with lower graining roll 48, and upper 47 side of graining roll, which is connected on first, to be connected Spindle 49, opposite side are connected with connecting shaft 54 on second, and lower 48 side of graining roll is connected with first time connecting shaft 50, and opposite side connects Second time connecting shaft 55 is connected to, 31 side of pedestal is equipped with positive rotating motor 51, and opposite side is equipped with reversion motor 58, and positive rotating motor 51 connects It is connected to positive shaft 52, connecting shaft 49, first time 50 outside of connecting shaft are cased with rotating forward synchronous belt 53, reversion in positive shaft 52, first Motor 58 is connected with reversing shaft 56, and connecting shaft 54, second time 55 outside of connecting shaft are cased with reversal synchronization band on reversing shaft 56, second 57, the lower section of positive rotating motor 51 is equipped with the first supporting rack 59, and the lower section of reversion motor 58 is equipped with the second supporting rack 60.
Implementation principle：Oxidation-type biological composite degradable additive, using polyolefin such as PP, PE, PS as product made of raw material, Add in 1% oxidation-type biological composite degradable additive, you can reach 100% oxidation and biodegradation, degradation principles are by beating The covalent bond of the intramolecular carbon key of broken height, becomes smaller molecular weight, and decomposition fragmentates, after the process of oxidized degradation, final handle Converting-plastics Cheng Shui, carbon dioxide and biomass, are decomposed by the microorganisms, the entire intimate no pollution of degradation process, to natural, ecological It has no adverse effect, adds in the plastics of oxygen biodegradable master batch, reproduce, recycle after recyclable, will not leave behind any harmful Substance.Biodegradation process does not need to a biology and enlivens environment to start to decompose, in the case of aerobic, cooperation sunlight, The factors such as heating power, pressure, degradation process just can start.
Polyethylene and the degradation of polyacrylic photo-thermal can trace back to the second half in 20th century, and main target is to solve their biology Degradation problem.Focusing on for research makes polyolefin generate hydrophilic peroxide under photothermy by introducing functional group, And cut off long-chain.Under the action of photo-thermal, oxygen and oxidation accelerator, long-chain is cut off, and it is that its is main that macromolecular, which is aoxidized, Reaction.
By thermal oxidative degradation, the molecular weight of the polyethylene containing oxidation accelerator is substantially reduced, the product packet after oxidation Containing carboxylic acid, ketone, the hydrocarbon of lactone and small-molecular-weight.With the thermal oxidative reaction of chemoluminescence method analysis polyethylene, find Initial product is the hydrophilic peroxide of ketone, and then long-chain is broken, and generates carboxylic acid, aldehyde and ketone groups simultaneously.Polyolefin Oxidative degradation generate carbonyl class product can be detected with infrared spectrometer.The generation and increase of carbonyl show polymer point Son amount ground reduces.The variation of carbonyl index and polymer molecular weight is relevant.Product after oxidative degradation, such as carboxylic acid, even if not having There is further biodegradation, it can continue to oxidative degradation, be ultimately oxidized as carbon dioxide and water.
By studying the relationship of molecular weight and fungi growth, it is found that polyethylene can not be biodegradable.If but polyethylene Molecular weight be less than 500, they can be decomposed by the microorganisms.The multidisciplinary joint group card of 35 A Sideng universities of Nian Qian Britain It is real：Although general commercial polyethylene can not be biodegradable, the polyethylene of oxidation accelerator is added to be dropped under the action of light Solution, can be by bio-absorbable.The high density polyethylene (HDPE) for having studies have shown that molecular weight to be 28,000 can be biodegradable[14].To compared with It is thick polyethylene board the study found that after light degradation, during Mw 40,000, biodegradation has occurred in the surface of polyethylene board. The low molecular weight product of the oxidative degradation of polyethylene board Surface Creation is biodegradable first.In this case, it is biodegradable Speed depend on oxidative degradation speed.Further investigation revealed that as long as a little non-biodegradation occurs, so that it may generate life Object is degraded.That is, biodegradable and non-biodegradation almost occurs simultaneously, exist simultaneously, and mutually promote.
The biodegradation rate of Degradable polyolefin depends on non-biodegradation rate, their speed that mineralize in the soil Rate is smaller.It is existing to be used for（Aquation）The test method of biodegradable plastic is in the rate that mineralizes of test oxidative degradation plastics When, measuring accuracy receives the influence of environment and blank sample.Researcher then devises a kind of suitable experimental rig and survey Method for testing tests the rate that mineralizes of oxidized-biodegradable plastic.Low density polyethylene (LDPE) sample after studies have shown that oxidative degradation Under the microbial action of product in the soil, significant biodegradation has occurred.By the biodegradation of 18 months, mineral rate reached To 50% ~ 60%.
Oxidative biodegradation performance study is divided into three parts, and first part is the research of Oxidative Degradation.Wherein wrap Include the research of thermal oxidative degradation performance and photo-thermal oxidative biodegradation performance study.Second part is the biology drop of oxidative breakdown product Solve performance study.It is tested including carbon dioxide release test and acquired biodegradability.Part III is oxidation drop Solve influence Journal of Sex Research of the product to environment.Including Chinese celery and barley seed germination and growth test, earthworm and toxic test of water flea It is tested with bacterial action.
Implementation process
First by raw material according to being configured by weight：Praseodymium Stearate 0.03-0.05 parts by weight, hydrotalcite powder 0.10-0.30 Parts by weight, octyl ferrocene 0.05-0.10 parts by weight, strontium stearate 0.10-0.50 parts by weight, tourmaline powder 0.50-0.90 Parts by weight, resorcinol monobenzoate 0.10-0.30 parts by weight, 4- methylol -2,6- DI-tert-butylphenol compounds 0.05-0.20 Parts by weight, high density polyethylene (HDPE) 30-50 parts by weight, low density polyethylene (LDPE) 10-20 parts by weight and linear low density polyethylene 20- 30 parts by weight, polylactic acid 30-70 parts by weight, nano silicon dioxide 1-10 parts by weight, 3- aminopropyl triethoxysilanes 1-5 weights Measure part, Lanthanum Stearate 0.05-0.20 parts by weight, low density polyethylene (LDPE) 5-10 parts by weight, linear low density polyethylene 4.8-30 weights Measure part.
Then it puts raw material into agitating device to be stirred, rotating speed 300-500rpm, time 300min-400min, It is put into comminutor after stirring evenly to be granulated, obtains degradative plastics particle, head temperature is 110-150 DEG C, then will degradation Plastic grain, which is put into coextrusion film blowing machine, carries out blown film, and wherein the temperature of blown film is 150 DEG C -200 DEG C, blow-up ratio 2-3, traction Speed is 5-8min, and printing device is put into after blowfilm shaping and carries out stamp.
Experiment process:
Catabolite biological toxicity test, the preparation of sample " are controlled under composting conditions with reference to Unite States Standard ASTM D5338-98 Plastic material aerobic bioreactor degrade test method " and EU criteria EN13432 " requirement of compost and biological degradation packaging material- Packaging material judgment criteria and test method ".
Plastic sample after thermal oxidative degradation or photo-thermal oxidative degradation and standard compost are mixed, plastic sample dry weight Ratio with compost dry weight is 1 to 9.The sieve that standard compost is before use 10mm with aperture is less than its particle 10mm.The water content of mixture is adjusted to 50% with distilled water in container.With ammonium chloride by the ratio between C/N adjustment in mixture To less than 40.Closed container is put into 58 ± 2oIn the baking oven of C, put 45 days.In the first week, container is opened 4 times daily, to Air is blown into container（Oxygen）.In the second week, container is opened 2 times daily.Third week, container are opened 1 time daily. It opens within every 2 ~ 3 days later primary.It is per week to be stirred material once during preparation of samples.100% standard compost of blank group, All preparation routines are identical with test specimen.
With the flowerpot of 500ml, compost and standard medium are mixed for barley germination and growth test.Each compost is with 2 kinds Mixed proportion：1/3 and 1/1（Volume ratio）.500ml experiment mixtures are packed into flowerpot, 100ml demineralized waters are added in, at it 50 barley seeds are uniformly put on surface, on seed, cover a thin layer silica sand.Finally, enough demineralized waters are added in To ensure to reach best moisture content.After flowerpot is ready to, lid lastblock sheet glass, by all flowerpots be put into temperature for 22 ± 2oThe dark place of C.After germination, sheet glass is removed, flowerpot is placed in the place of sunlight.According to actual conditions, to needing to add water Flowerpot add demineralized water.It is negatively affected to eliminate, each flowerpot rotates three times in the test period.When 50% standard medium After interior germination, experiment carries out 14 ± 2 days again.During off-test, measure soil top plant fresh weight and dry weight and The germination percentage of seed.The P values of barley fresh weight and barley dry weight illustrate that each group result of the test difference is not notable all close to 1.This says It is bright, compost 1 of degrading:The growth of 3 pairs of barleys and blank compost 1:3 compare without significant different；Degradation compost 1:1 pair of barley Growth and blank compost 1:1 compares without significant different.All 5 kinds of environment, i.e. standard medium, blank compost 1:3rd, blank Compost 1:1st, card moistens auspicious compost 1:3 and degradation compost 1:1, to the no significant difference of the growth of barley.
The embodiment of the present invention is described in detail above, but the content is only presently preferred embodiments of the present invention, Should not be construed as limiting the present invention practical range, any changes and modifications in accordance with the scope of the present application, It should all still belong within the patent covering scope of the present invention.

Claims (4)

1. a kind of mechanism and preparation method of oxidative biodegradation self-adhesive film, it is characterised in that：
Including agitating device, comminutor, coextrusion film blowing machine, printing device, the agitating device is connect with comminutor, the granulation Machine is connect with coextrusion film blowing machine, and the coextrusion film blowing machine is connect with printing device；
The agitating device includes stirring casing, and the stirring cabinet top is equipped with stirring cover, and the blender side of covering is set There is stirring motor, the blender is covered equipped with straight slot, and the stirring motor bottom is equipped with rotary shaft, and the rotary shaft passes through logical Slot is located in stirring casing, and the rotary shaft side is equipped with stirring rod；
The comminutor includes conveying storehouse, cutting storehouse, output storehouse, and the top in the conveying storehouse is equipped with feed inlet, the conveying storehouse Interior to be equipped with conveying screw rod, described conveying screw rod one end is connected with feeder motor, and the conveying storehouse other end is connect with cutting storehouse, institute It states and cutter is equipped in cutting storehouse, described cutter one end is connected with cutting motor, and the bottom in the cutting storehouse is connect with output storehouse, institute It states in output storehouse and is equipped with output screw, the output screw is connected with output motor；
The coextrusion film blowing machine includes outer die body, is equipped with core model in the external mold body, and the outer die body includes first layer external mold, the Two layers of external mold, third layer external mold, bed die, between the first layer external mold, second layer external mold be equipped with first layer runner, described second Second layer runner is equipped between layer external mold, third layer external mold, third layer runner, institute are equipped between the third layer external mold, bed die It states and mouth mold is equipped with above first layer external mold, top layer runner, the top layer runner, the first laminar flow are equipped between the mouth mold and core model Road, second layer runner, third layer runner communicate；
The printing device includes pedestal, and the pedestal is equipped with the first supporting rack, the second supporting rack, first supporting rack one Side is equipped with motor, first time motor on first, and motor is connected with rotary shaft on first on described first, rotary shaft on described first Pressure roller on first is connected with across the first supporting rack, first time motor is connected with the first Shaft, first backspin Shaft is connected with the first lower compression roller across the first supporting rack, and the second supporting rack side is equipped with motor on second, second time electricity Machine, motor is connected with rotary shaft on second on described second, and rotary shaft is connected with second across the second supporting rack on described second Upper pressure roller, second time motor are connected with the second Shaft, and second Shaft is connected with across the second supporting rack Second lower compression roller is equipped with self-adhesive film between first supporting rack, the second supporting rack, described self-adhesive film one end, which is located on first, presses Between roller, the first lower compression roller, the other end is located on second between pressure roller, the second lower compression roller, and upper print is equipped with above the self-adhesive film Flower roller, the self-adhesive film lower section are equipped with lower graining roll, and the upper graining roll side is connected with connecting shaft on first, opposite side connection There is connecting shaft on second, the lower graining roll side is connected with first time connecting shaft, and opposite side is connected with second time connecting shaft, institute Pedestal side is stated equipped with positive rotating motor, opposite side is equipped with reversion motor, and the positive rotating motor is connected with positive shaft, the rotating forward Axis, is cased with rotating forward synchronous belt connecting shaft on first outside first time connecting shaft, and the reversion motor is connected with reversing shaft, described Reversing shaft, is cased with reversal synchronization band at connecting shaft on second outside second time connecting shaft.
2. the mechanism and preparation method of a kind of oxidative biodegradation self-adhesive film according to claim 1, it is characterised in that：Institute The lower section for stating positive rotating motor is equipped with the first supporting rack, and the lower section of the reversion motor is equipped with the second supporting rack.
3. the mechanism and preparation method of a kind of oxidative biodegradation self-adhesive film according to claim 1, it is characterised in that：Institute State the top that pressure roller on first is located at the first lower compression roller, pressure roller is located at the top of the second lower compression roller on described second.
4. the mechanism and preparation method of a kind of oxidative biodegradation self-adhesive film according to claim 1, it is characterised in that：Also Including raw material, the raw material includes Praseodymium Stearate, hydrotalcite powder, octyl ferrocene, strontium stearate, tourmaline powder, isophthalic two Phenol mono benzoate, 4- methylols -2,6- DI-tert-butylphenol compounds, high density polyethylene (HDPE), low density polyethylene (LDPE), linea low density It is polyethylene, polylactic acid, nano silicon dioxide, 3- aminopropyl triethoxysilanes, Lanthanum Stearate, low density polyethylene (LDPE), linear low Density polyethylene.
CN201810114730.2A 2018-02-06 2018-02-06 A kind of mechanism and preparation method of oxidative biodegradation self-adhesive film Withdrawn CN108264742A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115368715A (en) * 2022-09-22 2022-11-22 广州碧嘉材料科技有限公司 Completely biodegradable self-adhesive film material and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115368715A (en) * 2022-09-22 2022-11-22 广州碧嘉材料科技有限公司 Completely biodegradable self-adhesive film material and preparation method thereof
CN115368715B (en) * 2022-09-22 2024-04-09 广州碧嘉材料科技有限公司 Completely biodegradable self-adhesive film material and preparation method thereof

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