CN104448398B - A kind of cassava degradation plastic and its production technology and production equipment - Google Patents
A kind of cassava degradation plastic and its production technology and production equipment Download PDFInfo
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- CN104448398B CN104448398B CN201410658491.9A CN201410658491A CN104448398B CN 104448398 B CN104448398 B CN 104448398B CN 201410658491 A CN201410658491 A CN 201410658491A CN 104448398 B CN104448398 B CN 104448398B
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Abstract
The present invention relates to degradation plastic and its technique and equipment technical field, more particularly to a kind of cassava degradation plastic and its production technology and production equipment, cassava degradation plastic to include each component of following percentage by weight：Tapioca 75 91%；Polyolefin 5 20%；Catalyst 0.5 2%；Coupling agent 0.5 2%；Initiator 0.5 2%；Filler 1 3%；Production technology includes gelatinization and pre-processes, dry pretreatment, then it is kneaded at a high speed and mediates powder, reactive extrursion is carried out into twin-screw extrusion reaction machine, finally carry out the cassava degradation plastic that the drying packing of tie rod blank obtains, the production equipment of cassava degradation plastic, including for sieving the screening machine of filler and mixer for batch mixing, further include the gelatinization equipment for being gelatinized tapioca, high speed mixing kneader, twin-screw mixer extrusion reaction machine and tie rod pellet device, the connection high speed mixing kneader of mixer, high speed mixing kneader connects twin-screw mixer extrusion reaction machine, twin-screw mixer extrusion reaction machine connects tie rod pellet device, degradation rate is up to more than 85%.
Description
Technical field
The present invention relates to degradation plastic and its technique and equipment technical field, more particularly to a kind of cassava degradation plastic
And its production technology and production equipment.
Background technology
Plastics bring a variety of facilities to daily life, but since organic high molecular polymer is difficult to degrade, make
Into serious pollution, plastics " white pollution " threaten ecological environment, are a global problems.Environment-friendly degradable plastics go out
It is existing, specify developing direction for following plastic industry.
Existing degradation plastic includes starch addition type, light degradation type, plant-fibre type, wherein starch addition plastic
Intensity, draftability, translucency it is poor, and degradation time is difficult to control, short life；Photodegradable plastics by weather influenced compared with
Greatly, it is not degradable when unglazed or cloudy；Plant fiber plastics there are intensity is low, wind resistance rain energy force difference, it is broken the problems such as,
Therefore existing degradation plastic product generally existing defect, it is difficult to large-scale promotion application.
Therefore, it is badly in need of providing a kind of cassava degradation plastic and its technological process and production equipment, to solve the above problems.
The content of the invention
The object of the present invention is to provide a kind of cassava degradation plastic, and degradation rate is high, and mechanical performance is strong, hence it is evident that improves material
Application performance.
It is a further object of the present invention to provide a kind of production technology of cassava degradation plastic, step is simple, effectively drops
Low product cost.
It is a further object of the present invention to provide a kind of production equipment of cassava degradation plastic, it can meet large-scale industry
Metaplasia is produced.
Effectively to solve the above problems, the technical solution that the present invention takes is as follows：
A kind of cassava degradation plastic, includes each component of following percentage by weight：
Specifically, the catalyst is selected from organic acid catalyst, and the initiator is selected from organic peroxide evocating agent, institute
State coupling agent and be selected from titanate coupling agent.
Specifically, the organic acid catalyst is selected from formic acid, acetic acid, propionic acid, acrylic acid, butyric acid, benzene sulfonic acid or oxalic acid
In any one or the combination of several of them thing.
Specifically, the organic peroxide is selected from dialkyl peroxide, and the dialkyl peroxide is selected from diformazan
Base peroxide, diethyl peroxide either any one in di-tert-butyl peroxide or several compositions.
Specifically, the polyolefin is any one in linear polyethylene, polypropylene or several compositions.
Specifically, the filler is any in titanium dioxide, calcium carbonate, talcum powder, silica or glass microballoon
One or several kinds of compositions.The wherein use of filler, can strengthen the mechanical performance of cassava degradation plastic, and expanding it should
Use scope.
The production technology of above-mentioned cassava degradation plastic, comprises the following steps：
1) various materials first are weighed by formula first, is then gelatinized tapioca, denaturation is heated at 35-80 DEG C, so
Dehydration afterwards；
2) coupling agent is added in the tapioca pre-processed toward process step 1, heats 1-2h at 40-100 DEG C, be dried
Pretreatment；
3) toward adding catalyst in polyolefin, the agitating and heating 10-100min at 30-80 DEG C；
4) mixture obtained by step 3 is mixed with the mixture obtained by step 2, then adds filler, mixed
Uniformly mixed material, is then added in reaction kettle, reacts 1-2h at 80-200 DEG C by material processing；Then reaction is obtained
Material be sent into high speed mixing extruder in, obtain powder；
5) powder obtained by step 4 is sent into twin-screw mixer extrusion reaction machine, the twin-screw mixer by feed arrangement
Mono- area's temperature of extrusion reaction Ji is between 100~250 DEG C, and between 100~240 DEG C, three area's temperature are situated between two area's temperature
Between 100~230 DEG C, during by an area, initiator is added, 1-3min is reacted, is then vented；Subsequently into 2nd area, add
Initiator, reacts 1-3min, is then vented；3rd area are finally entered, carry out devolatilization processing, devolatilization processing produces useless
Gas, is passed through in neutralisation treatment equipment and is absorbed, and pressure is 5~10Mpa in twin-screw mixer extruder, is then gone out by extrusion
Material；
6) material extruded by step 5 is subjected to tie rod, blank, obtains required cassava degradation plastic masterbatch, most
Envelope is dried afterwards, obtains finished product.
Specifically, the filler of the step 4 passes through screening process, and the particle diameter of the filler is between 100-500 μm.
The production equipment of above-mentioned cassava degradation plastic, including for sieving the screening machine of filler and stirring for batch mixing
Machine is mixed, further includes gelatinization equipment, high speed mixing kneader, twin-screw mixer extrusion reaction machine and drawing for being gelatinized tapioca
Bar pellet device, the mixer connect the high speed mixing kneader, and the high speed mixing kneader connects the twin-screw
Mixing extrusion reacts machine, and the twin-screw mixer extrusion reaction machine connects the tie rod pellet device.
Specifically, the twin-screw mixer extrusion reaction machine is divided into an area, 2nd area and 3rd area, and 3rd area connect in exhaust gas and locate
Manage device.
Brief description of the drawings
Attached drawing 1 is the connection diagram of the production equipment of the cassava degradation plastic of the present invention.
Attached drawing 2 is the structure of the twin-screw mixer extrusion reaction machine in the production equipment of the cassava degradation plastic of the present invention
Schematic diagram.
Embodiment
Invention is further described with reference to embodiment, this is presently preferred embodiments of the present invention.
Embodiment 1
A kind of cassava degradation plastic, includes each component of following percentage by weight：
Embodiment 2
A kind of cassava degradation plastic, includes each component of following percentage by weight：
Embodiment 3
A kind of cassava degradation plastic, includes each component of following percentage by weight：
Embodiment 4
A kind of cassava degradation plastic, includes each component of following percentage by weight：
Embodiment 5
A kind of cassava degradation plastic, includes each component of following percentage by weight：
Embodiment 6
A kind of cassava degradation plastic, includes each component of following percentage by weight：
Embodiment 7
The production technology of cassava degradation plastic described in embodiment 1, comprises the following steps：
1) tapioca 750g, linear polyethylene 200g, formic acid 20g, titanate esters 5g, dimethyl peroxide are weighed first
Tapioca, is then gelatinized by 5g, calcium carbonate 20g, denaturation is heated at 35 DEG C, then dehydration；
2) titanate esters are added in the tapioca pre-processed toward process step 1, heats 2h at 40 DEG C, pre- place is dried
Reason；
3) toward addition Catalyzed by Formic Acid agent, the agitating and heating 100min at 30 DEG C in linear polyethylene；
4) mixture obtained by step 3 is mixed with the mixture obtained by step 2, then adds calcium carbonate, carried out
Uniformly mixed material, is then added in reaction kettle, reacts 2h at 80 DEG C by mixing treatment；Then obtained thing will be reacted
Material is sent into high speed mixing kneader, obtains powder；
5) powder obtained by step 4 is sent into twin-screw mixer extrusion reaction machine, the twin-screw mixer by feed arrangement
Mono- area's temperature of extrusion reaction Ji is 100 DEG C, and two 110 DEG C of area's temperature, three area's temperature are between 125 DEG C, during by an area, is added
Enter dimethyl peroxide, react 1min, be then vented；Subsequently into 2nd area, dimethyl peroxide is added, reacts 1min,
Then it is vented；3rd area are finally entered, carry out devolatilization processing, pressure is 5Mpa in twin-screw mixer extruder, is then passed through
Extrusion discharging；
6) material extruded by step 5 is subjected to tie rod, blank, obtains required cassava modeling degradation plastic masterbatch,
Envelope is finally dried, obtains finished product.
The calcium carbonate of the step 4 passes through screening process, and the particle diameter of the calcium carbonate is 100 μm.
The exhaust gas that specifically the devolatilization processing of the step 5 produces, is passed through in neutralisation treatment equipment and is absorbed.
Embodiment 8
The production technology of cassava degradation plastic described in embodiment 2, comprises the following steps：
1) weigh first tapioca 910g, polypropylene 50g, acetic acid 10g, titanate esters 10g, diethyl peroxide 10g,
Tapioca, is then gelatinized by titanium dioxide 10g, denaturation is heated at 80 DEG C, then dehydration；
2) titanate esters are added in the tapioca pre-processed toward process step 1, heats 1h at 100 DEG C, pre- place is dried
Reason；
3) toward adding acetic acid catalyst in polypropylene, the agitating and heating 10min at 80 DEG C；
4) mixture obtained by step 3 is mixed with the mixture obtained by step 2, then adds titanium dioxide, carried out
Uniformly mixed material, is then added in reaction kettle, reacts 1h at 200 DEG C by mixing treatment；Then it will react what is obtained
Material is sent into high speed mixing kneader, obtains powder；
5) powder obtained by step 4 is sent into twin-screw mixer extrusion reaction machine, the twin-screw mixer by feed arrangement
Mono- area's temperature of extrusion reaction Ji is 250 DEG C, and two 240 DEG C of area's temperature, three area's temperature are between 230 DEG C, during by an area, is added
Enter diethyl peroxide, react 3min, be then vented；Subsequently into 2nd area, diethyl peroxide is added, reacts 3min,
Then it is vented；3rd area are finally entered, carry out devolatilization processing, pressure is 10Mpa in twin-screw mixer extruder, is then passed through
Extrusion discharging；
6) material extruded by step 5 is subjected to tie rod, blank, obtains required cassava degradation plastic masterbatch, most
Envelope is dried afterwards, obtains finished product.
The process screening process of the step 4, the particle diameter of the titanium dioxide is 500 μm.
The exhaust gas that specifically the devolatilization processing of the step 5 produces, is passed through in neutralisation treatment equipment and is absorbed.
Embodiment 9
The production technology of cassava degradation plastic described in embodiment 3, comprises the following steps：
1) tapioca 830g, polypropylene 120g, propionic acid 15g, titanate esters 20g, di-tert-butyl peroxide are weighed first
Tapioca, is then gelatinized by 20g, talcum powder 10g, denaturation is heated at 50 DEG C, then dehydration；
2) titanate esters are added in the tapioca pre-processed toward process step 1, heating 1.5h at 60 DEG C is dried pre- place
Reason；
3) toward addition propionic acid catalyst, the agitating and heating 50min at 50 DEG C in polypropylene；
4) mixture obtained by step 3 is mixed with the mixture obtained by step 2, then adds talcum powder, carried out
Uniformly mixed material, is then added in reaction kettle, reacts 1.5h at 60 DEG C by mixing treatment；Then it will react what is obtained
Material is sent into high speed mixing kneader, obtains powder；
5) powder obtained by step 4 is sent into twin-screw mixer extrusion reaction machine, the twin-screw mixer by feed arrangement
Mono- area's temperature of extrusion reaction Ji is 220 DEG C, and two 210 DEG C of area's temperature, three area's temperature are between 200 DEG C, during by an area, is added
Enter di-tert-butyl peroxide, react 2min, be then vented；Subsequently into 2nd area, di-tert-butyl peroxide, reaction are added
2min, is then vented；3rd area are finally entered, carry out devolatilization processing, pressure is 8Mpa in twin-screw mixer extruder, then
Discharge by extrusion；
6) material extruded by step 5 is subjected to tie rod, blank, obtains required cassava degradation plastic masterbatch, most
Envelope is dried afterwards, obtains finished product.
The process screening process of the step 4, the particle diameter of the titanium dioxide is 300 μm.
The exhaust gas that specifically the devolatilization processing of the step 5 produces, is passed through in neutralisation treatment equipment and is absorbed.
Embodiment 10
As shown in Figure 1, the production equipment of the cassava degradation plastic described in embodiment 1-6, including for sieving filler
Screening machine and the mixer for batch mixing, further include for be gelatinized tapioca gelatinization equipment, high speed mixing kneader, double spiral shells
Bar mixing extrusion reacts machine and tie rod pellet device, the connection high speed mixing kneader of the mixer, the high speed are mixed
Refine kneader and connect the twin-screw mixer extrusion reaction machine, the twin-screw mixer extrusion reaction machine connects the tie rod pelletizing
Device.
As shown in Fig. 2, the twin-screw mixer extrusion reaction machine 1 is divided into an area 11, two areas 12 and three areas 13, three areas 13 connect
Connect exhaust gas Integrated Processing Unit.
Wherein screening machine is used for screening process filler, the particle diameter of filler is increased contact area between 100um-500um,
Make reaction more complete.The wherein use of filler, can strengthen the mechanical performance of cassava degradation plastic, expand it and apply model
Enclose.
High speed mixing kneader is used to be mixed the material obtained by step 2 and step 3 and obtains powder.
Powder enters twin-screw mixer extrusion reaction machine by feeding device, and twin-screw mixer extrusion reaction machine is divided into one
Area, 2nd area and 3rd area, then while area addition catalyst acceleration reaction, catalytic reaction, can produce a large amount of gases, in order to
Promote the progress of reaction, after reacting 1-3min, the gas of generation is discharged；Then material enters 2nd area, adds initiator and draws
Hair reaction, initiator initiation reaction, while initiation reaction, can produce a large amount of gases, in order to promote the progress of reaction, react 1-
After 3min, the gas of generation is discharged；Subsequently into 3rd area, 3rd area are devolatilization subregion, and row completely can be wrapped up not in material
The gas gone out, therefore twin-screw meeting pressing materials, simultaneously because the inside is in high pressure conditions, undischarged material can be subject to double
Screw extruding and by material residual gas discharge, preventing gas wrapping, the reaction was continued, produces unnecessary accessory substance, influence
The preparation of product.
The degradation rate of cassava degradation plastic prepared by embodiment 7-9, test method are as follows：Cassava degradation plastic is covered
It is earthed, buries 20-30 days time, it is as shown in table 1 then tests degradation rate：
| Title | Bury the time (d) | Degradation rate |
| Embodiment 1 | 20 | 86% |
| Embodiment 2 | 25 | 89% |
| Embodiment 3 | 30 | 92% |
Table 1
As shown in Table 1, the degradation rate of cassava degradation plastic produced by the invention reaches more than 85%, and fully meeting to drop
Solve the standard of plastics.
Present invention is not limited to the embodiments described above, all to realize the present invention using structure similar with the present invention and its method
All modes of purpose, within protection scope of the present invention.
Claims (6)
1. a kind of cassava degradation plastic, includes each component of following percentage by weight：
The polyolefin is any one or several compositions in linear polyethylene, polypropylene；
The catalyst is selected from organic acid catalyst, and the initiator is selected from organic peroxide evocating agent, the coupling agent choosing
From titanate coupling agent；
The filler in titanium dioxide, calcium carbonate, talcum powder, silica either glass microballoon any one or it is several
Composition；
The production technology of the cassava degradation plastic, it is characterised in that comprise the following steps：
1) various materials are weighed by formula first, is then gelatinized tapioca, denaturation is heated at 35-80 DEG C, is then dehydrated
Processing；
2) coupling agent is added in the tapioca pre-processed toward process step 1), heats 1-2h at 40-100 DEG C, be dried pre-
Processing；
3) toward adding catalyst in polyolefin, the agitating and heating 10-100min at 30-80 DEG C；
4) by the mixture obtained by step 3) and step 2）The mixture of gained is mixed, and then adds filler, carries out batch mixing
Uniformly mixed material, is then added in reaction kettle, reacts 1-2h at 80-200 DEG C by processing；Then it will react what is obtained
Material is sent into high speed mixing extruder, obtains powder；
5) powder obtained by step 4) is sent into twin-screw mixer extrusion reaction machine, the twin-screw mixer extrusion by feed arrangement
Mono- area's temperature of Ji is reacted between 100-250 DEG C, and two area's temperature are between 100-240 DEG C, and three area's temperature are between 100-
Between 230 DEG C, during by an area, initiator is added, 1-3min is reacted, is then vented；Subsequently into 2nd area, initiator is added,
1-3min is reacted, is then vented；3rd area are finally entered, carry out devolatilization processing, the exhaust gas that devolatilization processing produces, is passed through
Absorbed in exhaust gas neutralisation treatment equipment, pressure goes out for 5-10MPa and then by extrusion in twin-screw mixer extrusion reaction machine
Material；
6) material that will pass through step 5) extrusion carries out tie rod, blank, obtains required cassava degradation plastic masterbatch, finally does
Dry envelope, obtains finished product.
2. cassava degradation plastic according to claim 1, it is characterised in that：The organic acid catalyst be selected from formic acid,
Any one or the combination of several of them thing in acetic acid, propionic acid, acrylic acid, butyric acid, benzene sulfonic acid or oxalic acid.
3. cassava degradation plastic according to claim 1, it is characterised in that：The organic peroxide is selected from dialkyl group
Peroxide, the dialkyl peroxide are selected from dimethyl peroxide, diethyl peroxide or di-t-butyl peroxide
Any one in compound or several compositions.
4. according to claim 1-3 any one of them cassava degradation plastics, it is characterised in that：The filler warp of the step 4)
Screening process is crossed, the particle diameter of the filler is between 100-500 μm.
5. according to the production equipment of claim 1-4 any one of them cassava degradation plastics, including for sieving filler
Screening machine and the mixer for batch mixing, it is characterised in that：Gelatinization equipment, high speed for being gelatinized tapioca is further included to be kneaded
Extruder, twin-screw mixer extrusion reaction machine and tie rod pellet device, the mixer connect the high speed mixing extruder, institute
State high speed mixing extruder and connect the twin-screw mixer extrusion reaction machine, described in the twin-screw mixer extrusion reaction machine connection
Tie rod pellet device.
6. the production equipment of cassava degradation plastic according to claim 5, it is characterised in that：The twin-screw mixer is squeezed
Go out reaction machine and be divided into an area, 2nd area and 3rd area, 3rd area connection exhaust gas neutralisation treatment equipment.
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| CN106239767B (en) * | 2016-08-31 | 2019-09-03 | 寿光金远东变性淀粉有限公司 | A kind of device and method promoting thermoplastic starch plasticizing |
| CN108192212A (en) * | 2018-01-22 | 2018-06-22 | 储微微 | A kind of environment-friendly degradable PP plastics and preparation method thereof |
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| KR960012444B1 (en) * | 1992-11-24 | 1996-09-20 | 주식회사 유공 | Biodegradable polyethylene composition coupled chemically by starch and process thereof |
| JPH1112379A (en) * | 1997-06-25 | 1999-01-19 | Toyo Purasuto:Kk | Biodegradable resin foam |
| CN1267487C (en) * | 2004-08-23 | 2006-08-02 | 成都新柯力化工科技有限公司 | Biodegradation starch resin masterbatch |
| CN1326928C (en) * | 2004-12-20 | 2007-07-18 | 陈明忠 | Starchlike biological degradatable plastic mother material and its preparation method |
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Address after: Room 205, Building 2, No. 11, Kangyang 1st Street, Huangjiang Town, Dongguan, Guangdong 523000 Patentee after: DONGGUAN FANGZHONG SPORT PRODUCTS Co.,Ltd. Address before: 523000 No. 9, jinlang 2nd Street, diaolang village, Huangjiang Town, Dongguan City, Guangdong Province Patentee before: DONGGUAN FANGZHONG SPORT PRODUCTS Co.,Ltd. |