CN109651784A - Fully biodegradable equipment for prepn. of yoghurt and preparation method thereof - Google Patents
Fully biodegradable equipment for prepn. of yoghurt and preparation method thereof Download PDFInfo
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- CN109651784A CN109651784A CN201811545614.2A CN201811545614A CN109651784A CN 109651784 A CN109651784 A CN 109651784A CN 201811545614 A CN201811545614 A CN 201811545614A CN 109651784 A CN109651784 A CN 109651784A
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Biological Depolymerization Polymers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to a kind of fully biodegradable equipment for prepn. of yoghurt and preparation method thereof, belong to polymeric material field.Raw material including following parts by weight: 60~75 parts of polylactic acid, 10-25 parts of plasticized starch, 0.1~10 part of plasticizer, 0.5~1 part of titanium dioxide, 0.1 part of chain extender.Advantage is: raw materials used all renewable, degradable environment-friendly materials, the preparation method is concise, easily controllable, and strong operability, production cost is low, and high production efficiency is easy to industrialization large-scale production.
Description
Technical field
The invention belongs to polymeric material fields, are related to fully biodegradable equipment for prepn. of yoghurt and preparation method thereof.
Background technique
In recent years, Chinese Yoghourt volume of production and marketing is increased with average annual 40% speed.The diversified demand of Yoghourt, has pushed packaging
The development of technology.Plastics equipment for prepn. of yoghurt, compound paper bag and Tetra Pak are main packaged forms.Wherein equipment for prepn. of yoghurt is occupied an leading position.
Currently, occurring most of equipment for prepn. of yoghurt in the market is using polypropylene material, polypropylene is difficult to degrade under field conditions (factors), this just gives
Natural environment for the survival of mankind causes very important negative effect.If using biodegradable polymer,
Consumer can direct plunge into equipment for prepn. of yoghurt neighbouring composter barrel, and equipment for prepn. of yoghurt can be gradually decomposed by the microorganisms, and be eventually converted into fertilizer
Material.
The research hotspot of complete-degradable plastic in recent years is starch and polylactic acid blend material, and polylactic acid/starch is blended
Material combines the advantage of the excellent performance of polylactic acid and starch low cost, can not only partially substitute the modeling of conventional petroleum base
Material has more expanded the non-purposes in kind of starch, has been a kind of novel degradable plastics of great development prospect.Polylactic acid
(polylactide, PLA) is after obtaining lactic acid as fermenting raw materials using renewable plant resources such as corn, starch through chemical synthesis
High molecular material, have good biocompatibility, and can complete biodegradable, discard after can microorganism, water, acid,
Water and carbon dioxide are resolved under the effects of alkali completely, does not cause any pollution to environment, is that one kind typically can be completely biological
The green plastic of degradation.Meanwhile polylactic acid has many advantages, such as high intensity, high-modulus, high transparency, easy processing molding.Starch is
A kind of natural high molecular material, the plastic product for using it to prepare as raw material all have degradable energy in various environment
Power forms the carbon dioxide and water that will not cause to poison to soil and air after degradation, and can be again introduced into resource regeneration
Circulation.In addition, application of the developing starch in plastics industry also helps the structural readjustment of rural industry and pushes agricultural warp
The development of Ji.Therefore, how to use polylactic acid and starch as raw material, manufacturing cost is suitble to, processing performance and service performance all
It is able to satisfy existing requirement, and the equipment for prepn. of yoghurt of fully biodegradable, is always the key point of problem.
Summary of the invention
The present invention provides a kind of fully biodegradable equipment for prepn. of yoghurt and preparation method thereof, to reduce cost, improve processability
Can, service performance be improved, thus more suitable for using, and with the utility value in industry.
The technical solution adopted by the present invention is that: the raw material including following parts by weight:
60~75 parts of polylactic acid, 10-25 parts of plasticized starch, 0.1~10 part of plasticizer, 0.5~1 part of titanium dioxide, chain extender
0.1 part；
The invention also includes 0.1 part~15 parts of talcum powder；
Plasticized starch of the present invention obtains as follows:
It is that 75 parts of cornstarch are added in high-speed mixer by parts by weight, being drenched while stirring into parts by weight is 25 parts sweet
Oil, high-speed stirred reach 100~120 DEG C until its temperature, sealing and standing.
Cornstarch of the present invention is one of common corn starch, hydrophobicity starch or waxy starch.
Plasticizer of the present invention is one of glycerol, tributyl 2-acetylcitrate.
Chain extender of the present invention is Styrene And Chloroalkyl Acrylates-glycidyl methacrylate copolymer A DR；
A kind of preparation method of fully biodegradable equipment for prepn. of yoghurt, including the following steps:
(1) polylactic acid is dried, weighed in proportion polylactic acid, plasticized starch, talcum powder, titanium dioxide, chain extender,
Plasticizer with double screw extruder extruding pelletization, and is dried after mixing；
(2) pellet prepared by step (1) is put into sheet material machine, by melting, plasticizing, calendering, traction, cooling and receipts
Roll forming prepares plastic uptake sheet material；
(3) sheet material for preparing step (2), obtains equipment for prepn. of yoghurt product by Packing Machine plastic uptake.
The melt blending temperature of double screw extruder described in step (1) of the present invention is 170~195 DEG C, engine speed
For 200r/min, feeding frequency is 13；
The temperature of sheet material machine described in step (2) of the present invention is 145~165 DEG C, and cold water roller revolving speed is 7.0, screw speed
For 60r/min；
The heating temperature of Packing Machine described in step (3) of the present invention is 60~80 DEG C, pumpdown time 14s, when cooling
Between be 17s, warm-up time be 11~18s.
The present invention has the advantages that raw materials used all renewable, degradable environment-friendly materials, preparation method simplicity,
Easily controllable, strong operability, production cost is low, and high production efficiency is easy to industrialization large-scale production.
Specific embodiment
Raw material is all parts by weight in following embodiment.
Embodiment 1
75 parts of common corn starch are added in high-speed mixer, are drenched while stirring into 25 parts of glycerol, high-speed stirred
Until its temperature reaches 100 DEG C, the plasticized starch sealing and standing of preparation；
Polylactic acid (trade names 2003D, producer are Nature Works companies, the U.S.) is dried into 8h at 70 DEG C, so
Afterwards by 60 parts of polylactic acid, 10 parts of plasticized starch, 0.5 part of titanium dioxide, 0.1 part of tributyl 2-acetylcitrate, 0.1 part of styrene-the third
Olefin(e) acid-glycidyl methacrylate copolymer A DR (BASF AG's 4370F type) is uniformly mixed, and passes through double screw extruder
Extruding pelletization, twin-screw temperature are 170 DEG C, engine speed 200r/min, and feeding frequency is 13；Extrudate through cooling, pelletizing,
Obtain polylactic acid composite granule；Obtained polylactic acid composite granule is dried into 8h at 70 DEG C,
Pellet after drying is put into sheet material machine, the temperature of sheet material machine is 145 DEG C, and cold water roller revolving speed is 7.0, screw rod
Revolving speed is 60r/min, forms, is prepared with a thickness of 0.7~1.0mm plastic uptake by melting, plasticizing, calendering, traction, cooling and winding
Use sheet material；
Using Packing Machine by sheet material plastic uptake at equipment for prepn. of yoghurt, the heating temperature of Packing Machine is 60 DEG C, pumpdown time 14s,
Cooling time is 17s, warm-up time 11s.
Embodiment 2
75 parts of cornstarch are added in high-speed mixers, are drenched while stirring into 25 parts of glycerol, high-speed stirred until
Its temperature reaches 110 DEG C, the plasticized starch sealing and standing of preparation；
Polylactic acid is dried into 8h at 70 DEG C；Then by 67.5 parts of polylactic acid, 17.5 parts of plasticized starch, 0.7 part of titanium dioxide,
5 parts of tributyl 2-acetylcitrates, 0.1 part of Styrene And Chloroalkyl Acrylates-glycidyl methacrylate copolymer A DR are uniformly mixed,
By double screw extruder extruding pelletization, twin-screw temperature is 182 DEG C, engine speed 200r/min, and feeding frequency is 13；It squeezes
Object obtains polylactic acid composite granule through cooling, pelletizing out；Obtained polylactic acid composite granule is dried into 8h at 70 DEG C,
Pellet after drying is put into sheet material machine, the temperature of sheet material machine is 155 DEG C, and cold water roller revolving speed is 7.0, screw rod
Revolving speed is 60r/min；By melting, plasticizing, calendering, traction, cooling and winding molding, prepare with a thickness of 0.7~1.0mm plastic uptake
Use sheet material；
Using Packing Machine by sheet material plastic uptake at equipment for prepn. of yoghurt, the heating temperature of Packing Machine is 70 DEG C, pumpdown time 14s,
Cooling time is 17s, warm-up time 15s.
Embodiment 3
75 parts of hydrophobicity starch are added in high-speed mixer, are drenched while stirring into 25 parts of glycerol, high-speed stirred is straight
Reach 120 DEG C to its temperature, the plasticized starch sealing and standing of preparation；
Polylactic acid is dried into 8h at 70 DEG C, then by 75 parts of polylactic acid, 25 parts of plasticized starch, 1 part of titanium dioxide, 10 parts of second
Acyl tributyl citrate, 0.1 part of Styrene And Chloroalkyl Acrylates-glycidyl methacrylate copolymer A DR are uniformly mixed, and are passed through
Double screw extruder extruding pelletization, twin-screw temperature are 195 DEG C, engine speed 200r/min, and feeding frequency is 13；Extrudate
Through cooling, pelletizing, polylactic acid composite granule is obtained, obtained polylactic acid composite granule is dried into 8h at 70 DEG C,
Pellet after drying is put into sheet material machine, the temperature of sheet material machine is 165 DEG C, and cold water roller revolving speed is 7.0, screw rod
Revolving speed is 60r/min；By melting, plasticizing, calendering, traction, cooling and winding molding, prepare with a thickness of 0.7~1.0mm plastic uptake
Use sheet material；
Using Packing Machine by sheet material plastic uptake at equipment for prepn. of yoghurt, the heating temperature of Packing Machine is 80 DEG C, pumpdown time 14s,
Cooling time is 17s, warm-up time 18s.
Embodiment 4
75 parts of hydrophobicity starch are added in high-speed mixer, are drenched while stirring into 25 parts of glycerol, high-speed stirred is straight
Reach 100 DEG C to its temperature, the plasticized starch sealing and standing of preparation.Polylactic acid is dried into 8h at 70 DEG C；
Then by 72.9 parts of polylactic acid, 10 parts of plasticized starch, 15 parts of talcum powder, 1 part of titanium dioxide, 10 parts of glycerol, 0.1 part
ADR is uniformly mixed, and by double screw extruder extruding pelletization, twin-screw temperature is 170 DEG C, engine speed 200r/min, is fed
Expect that frequency is 13；Extrudate obtains polylactic acid composite granule through cooling, pelletizing, by obtained polylactic acid composite granule in 70 DEG C
Lower dry 8h；
Pellet after drying is put into sheet material machine, the temperature of sheet material machine is 145 DEG C, and cold water roller revolving speed is 7.0, screw rod
Revolving speed is 60r/min；By melting, plasticizing, calendering, traction, cooling and winding molding, prepare with a thickness of 0.7~1.0mm plastic uptake
Use sheet material；
Using Packing Machine by sheet material plastic uptake at equipment for prepn. of yoghurt, the heating temperature of Packing Machine is 60 DEG C, pumpdown time 14s,
Cooling time is 17s, warm-up time 18s.
Embodiment 5
75 parts of waxy starches are added in high-speed mixers, are drenched while stirring into 25 parts of glycerol, high-speed stirred until
Its temperature reaches 110 DEG C, the plasticized starch sealing and standing of preparation；
Polylactic acid is dried into 8h at 70 DEG C, then by 60 parts of polylactic acid, 25 parts of plasticized starch, 0.1 part of talcum powder, 0.5
Part titanium dioxide, 0.1 part of glycerol, 0.1 part of ADR are uniformly mixed, and by double screw extruder extruding pelletization, twin-screw temperature is 190
DEG C, engine speed 200r/min, feeding frequency is 13；Extrudate obtains polylactic acid composite granule through cooling, pelletizing, will
The polylactic acid composite granule arrived dry 8h at 70 DEG C；
Pellet after drying is put into sheet material machine, the temperature of sheet material machine is 150 DEG C, and cold water roller revolving speed is 7.0, screw rod
Revolving speed is 60r/min；By melting, plasticizing, calendering, traction, cooling and winding molding, prepare with a thickness of 0.7~1.0mm plastic uptake
Use sheet material；
Using Packing Machine by sheet material plastic uptake at equipment for prepn. of yoghurt, the heating temperature of Packing Machine is 70 DEG C, pumpdown time 14s,
Cooling time is 17s, warm-up time 14s.
Embodiment 6
75 parts of waxy starches are added in high-speed mixers, are drenched while stirring into 25 parts of glycerol, high-speed stirred until
Its temperature reaches 120 DEG C, the plasticized starch sealing and standing of preparation；
By polylactic acid at 70 DEG C dry 8h, then by 72.9 parts of polylactic acid, 17 parts of plasticized starch, 7.5 parts of talcum powder,
0.8 part of titanium dioxide, 5 parts of glycerol, 0.1 part of ADR are uniformly mixed, and by double screw extruder extruding pelletization, twin-screw temperature is 185
DEG C, engine speed 200r/min, feeding frequency is 13；Extrudate obtains polylactic acid composite granule through cooling, pelletizing, will
The polylactic acid composite granule arrived dry 8h at 70 DEG C；
Pellet after drying is put into sheet material machine, the temperature of sheet material machine is 165 DEG C, and cold water roller revolving speed is 7.0, screw rod
Revolving speed is 60r/min；By melting, plasticizing, calendering, traction, cooling and winding molding, prepare with a thickness of 0.7~1.0mm plastic uptake
Use sheet material；
Using Packing Machine by the sheet material plastic uptake of preparation at equipment for prepn. of yoghurt, the heating temperature of Packing Machine is 80 DEG C, the pumpdown time
For 14s, cooling time 17s, warm-up time 18s.
Tensile bars are made in sheet material prepared by Examples 1 to 6, carry out stretching survey according to ASTM D638-2008 standard
Examination, test result are as shown in table 1.
Each embodiment of table 1 stretches data
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | |
| Tensile strength (MPa) | 38.3 | 41.8 | 35.8 | 29.2 | 27.0 | 30.3 |
| Elongation at break (%) | 3.0 | 3.2 | 2.9 | 2.1 | 2.6 | 2.5 |
| Young's modulus (MPa) | 1890 | 1934 | 1676 | 1628 | 1278 | 1368 |
The sheet material plastic uptake for being prepared Examples 1 to 6 using Packing Machine is at equipment for prepn. of yoghurt, easily controllable, strong operability, production
At low cost, high production efficiency is easy to industrialization large-scale production.
Claims (10)
1. a kind of fully biodegradable equipment for prepn. of yoghurt, it is characterised in that: the raw material including following parts by weight:
60~75 parts of polylactic acid, 10-25 parts of plasticized starch, 0.1~10 part of plasticizer, 0.5~1 part of titanium dioxide, chain extender 0.1
Part.
2. a kind of fully biodegradable equipment for prepn. of yoghurt according to claim 1, it is characterised in that: further include talcum powder 0.1
Part~15 parts.
3. a kind of fully biodegradable equipment for prepn. of yoghurt according to claim 1, it is characterised in that: the plasticized starch is
It obtains as follows:
It is that 75 parts of cornstarch are added in high-speed mixer by parts by weight, being drenched while stirring into parts by weight is 25 parts of glycerol,
High-speed stirred reaches 100~120 DEG C until its temperature, sealing and standing.
4. a kind of fully biodegradable equipment for prepn. of yoghurt according to claim 3, it is characterised in that: the cornstarch is general
One of logical cornstarch, hydrophobicity starch or waxy starch.
5. a kind of fully biodegradable equipment for prepn. of yoghurt according to claim 1, it is characterised in that: the plasticizer is sweet
One of oil, tributyl 2-acetylcitrate.
6. a kind of fully biodegradable equipment for prepn. of yoghurt according to claim 1 and preparation method thereof, it is characterised in that: described
Chain extender be Styrene And Chloroalkyl Acrylates-glycidyl methacrylate copolymer A DR.
7. a kind of preparation method of fully biodegradable equipment for prepn. of yoghurt, it is characterised in that include the following steps:
(1) polylactic acid is dried, has weighed polylactic acid, plasticized starch, talcum powder, titanium dioxide, chain extender, plasticising in proportion
Agent with double screw extruder extruding pelletization, and is dried after mixing；
(2) pellet prepared by step (1) is put into sheet material machine, by melting, plasticizing, calendering, traction, cooling and is wound into
Type prepares plastic uptake sheet material；
(3) sheet material for preparing step (2), obtains equipment for prepn. of yoghurt product by Packing Machine plastic uptake.
8. a kind of preparation method of fully biodegradable equipment for prepn. of yoghurt according to claim 7, it is characterised in that: described
Plasticized starch obtains as follows:
It is that 75 parts of cornstarch are added in high-speed mixer by parts by weight, being drenched while stirring into parts by weight is 25 parts of glycerol,
High-speed stirred reaches 100~120 DEG C until its temperature, sealing and standing.
9. a kind of preparation method of fully biodegradable equipment for prepn. of yoghurt according to claim 7, it is characterised in that: step
(1) the melt blending temperature of the double screw extruder described in is 170~195 DEG C, engine speed 200r/min, feeding frequency
It is 13.
10. a kind of preparation method of fully biodegradable equipment for prepn. of yoghurt according to claim 7, it is characterised in that: step
(2) temperature of sheet material machine described in is 145~165 DEG C, and cold water roller revolving speed is 7.0, screw speed 60r/min；
The heating temperature of Packing Machine described in step (3) is 60~80 DEG C, pumpdown time 14s, and cooling time, 17s, added
The warm time is 11~18s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811545614.2A CN109651784A (en) | 2018-12-17 | 2018-12-17 | Fully biodegradable equipment for prepn. of yoghurt and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811545614.2A CN109651784A (en) | 2018-12-17 | 2018-12-17 | Fully biodegradable equipment for prepn. of yoghurt and preparation method thereof |
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| CN109651784A true CN109651784A (en) | 2019-04-19 |
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| CN201811545614.2A Withdrawn CN109651784A (en) | 2018-12-17 | 2018-12-17 | Fully biodegradable equipment for prepn. of yoghurt and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111732780A (en) * | 2020-03-03 | 2020-10-02 | 江苏中恒宠物用品股份有限公司 | Controllable degradable plastic garbage bag and preparation method thereof |
| CN112265297A (en) * | 2020-09-17 | 2021-01-26 | 淄博中南医药包装材料股份有限公司 | Preparation method of biodegradable urine sample cup |
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