CN106700134A - Starch-based biodegradable cast film and preparation method thereof - Google Patents
Starch-based biodegradable cast film and preparation method thereof Download PDFInfo
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- CN106700134A CN106700134A CN201611052653.XA CN201611052653A CN106700134A CN 106700134 A CN106700134 A CN 106700134A CN 201611052653 A CN201611052653 A CN 201611052653A CN 106700134 A CN106700134 A CN 106700134A
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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
- C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
- C08L3/02—Starch; Degradation products thereof, e.g. dextrin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
- B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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- 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
- C08J2303/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2303/02—Starch; Degradation products thereof, e.g. dextrin
-
- 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
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- 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
- C08J2423/08—Copolymers of ethene
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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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
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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
- 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
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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
- 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
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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
- 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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- 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
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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Abstract
The invention discloses a starch-based biodegradable cast film and a preparation method thereof. The starch-based biodegradable cast film comprises the following components in percentage by weight: 40-50 percent of starch, 15-25 percent of polyethylene, 10-13 percent of polyvinyl alcohol, 5-10 percent of modified polylactic acid, 6-12 percent of a plasticizer, 1-2 percent of cellulose, 1-2 percent of a cross-linking agent and 2.1-4.5 percent of an auxiliary. The biodegradable cast film disclosed by the invention is resistant to water, oil and leakage, high in tensile strength and high in toughness, and can be applied in the temperature range of 25 DEG C below zero to 70 DEG C. The starch-based biodegradable cast film does not contain any toxic additive and is scientific in ingredients, simple in process, low in energy consumption, suitable for automated machinery production and particularly non-toxic, harmless and degradable, thereby being an oil-based plastic rare alternative product. The starch-based biodegradable cast film disclosed by the invention uses cheap starch as a main base material, has good degradability, conforms to national standards and has good physical use performance.
Description
【Technical field】
The present invention relates to a kind of degradable casting films and preparation method thereof, more particularly to a kind of degradable stream of starch-based bio
Prolong film and preparation method thereof, belong to waterproof material technical field.
【Background technology】
Casting films are normally used in various disposable commodities, such as:Sanitary napkin, diaper, bandage etc., however, city
Most of on field are the outer cover film of petroleum-based plastics or product packaging film is nondegradable, even if such film is raw
Biodegradable, but their a large amount of expensive biomaterials and auxiliary agent, these high costs limit them one
Widely using in secondary property commodity.
【The content of the invention】
The present invention seeks to overcome the deficiencies in the prior art, there is provided a kind of main base material is easy to get, the starch base life of low cost
Biodegradable casting films.
It is a further object of the present invention to provide a kind of preparation method of above-mentioned degradable casting films.
The present invention is achieved by the following technical solutions：
The degradable casting films of starch-based bio, it is characterised in that including following mass percent component：
Further, the degradable casting films of starch-based bio of the present invention, it is characterised in that including following mass percent group
Point：
Said components major ingredient starch-based bio pellet raw material used by preparation casting films.
Polyethylene in the present invention is cast membrane fluidity and viscosity criterion by LLDPE, LDPE and HDPE by common PE to be carried out
Proportioning, preferred mass compares 2：1：1 mixing composition.
Polydactyl acid in the present invention is embedding common using ethene, acrylic acid N-butyl, metering system glycidic acid three
PLA and PBAT is carried out gained after grafting granulation by polymers as toughener.Modified PLA impact and compatibility are improved
Significantly.
Plasticizer in the present invention is selected from one or more in glycerine, citric acid, sorbierite, polypropylene glycol, plasticising
Agent can also be the composite elasticizer of polyalcohol or its ester type compound composition.
Cellulose preferably carboxymethyl cellulose sodium in the present invention.
Crosslinking agent in the present invention uses at least one in unsaturated carboxylic acid or anhydrides compound, such as:Octadecenic acid,
Hendecene base succinic anhydride, dodecenylsuccinic acid acid anhydride etc., or biodegradable aliphatic polyester graft copolymer, such as:
Pla-pcl (PCL), polyglycolic acid (PGA), poly butyric fat (PHB) etc., preferably octadecenic acid.
Auxiliary agent in the present invention includes lubricant, hydrophobicity agent and flexibility agent, wherein lubricant 1-2%, preferably 1.6%,
Hydrophobicity agent (PHB) 0.8-1.6%, preferably 1.2%, flexibility agent 0.3-0.9%, preferably 0.6%.
The preferred stearic acid acyl of lubricant in the present invention, it would however also be possible to employ methylene bis-stearamides, ethylene bis stearamide
Deng.
Hydrophobicity agent in the present invention preferably gathers-β-hydroxybutyric acid fat (PHB), it would however also be possible to employ polyethylene glycol oxide
(PEO)。
The preferred polyethylene glycol of flexibility agent (PEG) in the present invention, it would however also be possible to employ polyethylene glycol oxide (PEO).
A kind of preparation method of the degradable casting films of above-mentioned starch-based bio, it is characterised in that comprise the following steps：
A, will starch, polyvinyl alcohol and plasticizer be input into high-speed mixer in be well mixed；
B, again by polyethylene and polydactyl acid input high-speed mixer in, be well mixed；
C, finally cellulose, crosslinking agent and all of auxiliary agent are sequentially input in high-speed mixer it is well mixed, will mixes
Good material is after supercooling by extrusion molding in double screw extruder, underwater cutpellet；
D, the particle to being molded are dehydrated, screen and obtain final product starch-based bio pellet；
E, by the starch-based bio pellet after screening and PE material by cast film machine difference extrusion calendaring cooling shaping after, cut
Side winds.
65 DEG C~70 DEG C of mixing temperature in wherein step a, incorporation time 4~6 minutes mixes 220 revs/min of rotating speed；
85 DEG C~90 DEG C of mixing temperature in step b, incorporation time 8~10 minutes mixes 350 revs/min of rotating speed；It is mixed in step c
145 DEG C~150 DEG C of temperature is closed, incorporation time 5~8 minutes mixes 150 revs/min of rotating speed.
The screw slenderness ratio of double screw extruder is in wherein step c:L/D=52：1；2 × 3500Nm of output torque；It is defeated
Enter rotating speed:1500rpm；Output speed:400rpm；Transmission speed ratio:I=3：1, the processing conditions of the double screw extruder is：
One 150 DEG C of area：Two 160 DEG C of areas：Three 165 DEG C of areas:It is set as 165 DEG C~185 DEG C below 4th area；Pressure is set as 10MPa；Speed
It is 45 revs/min to spend, melting, vacuum exhaust, plasticizing, extrusion.
In wherein step e, cast film machine is three-layer co-extruded machine A/B/A, and extrusion ratio (weight ratio) is 1：3：1, screw rod
Draw ratio L/D is 42：1, starch-based bio pellet adds the main frame hopper of cast film machine, PE to add slave hopper, and slave is each
Area's processing temperature is 150 DEG C~240 DEG C, specially：Head section processing temperature is 180~240 DEG C, and pressure is set as 30Mpa.
120 DEG C~160 DEG C of each area's processing temperature of host B；150 DEG C~160 DEG C of head section processing temperature, head pressure is set as
10Mpa。
In preparation method of the present invention, underwater cutpellet uses west gate sub-motor, pneumatic feed, and maximum speed is 2840 revs/min
Clock, can be with the cooperation of the amount of extruder.
The degradable casting films of starch-based bio of the present invention, according to actual needs and the market demand, pass through successively in casting machine
Melting, plasticizing, metering distribution, cooling, traction, winding are crossed, the film of 0.002~0.08mm of thickness can be obtained.
The present invention in terms of existing technologies, with advantages below：
In the present invention, the degradable casting films film article of starch-based bio pellet and its preparation, resistance to oozes water-fast, oil resistant
Leakage, tensile strength is big, and pliability is high, can be applied in -25 DEG C~70 DEG C temperature ranges.Product of the present invention poisonous adds without any
Plus agent, dispensing science, process drum list, energy consumption is low, and it is nontoxic, harmless to be applicable automated machine production , Te Do, and degradable is oil
The rare substitute products of base plastics.
The present invention is main base material using cheap starch, and the film has good degradability, meets national mark
Standard, and with good physics performance.
【Specific embodiment】
The degradable casting films of starch-based bio of the present invention, its main pellet is made up of following mass percent component：
The method for preparing bio-based pellet is comprised the following steps：
It is well mixed in a, ative starch, polyvinyl alcohol and plasticizer input high-speed mixer；
B, again by polyethylene and polydactyl acid input high-speed mixer in, be well mixed；
C, finally all of auxiliary agent is sequentially input in high-speed mixer it is well mixed, the material that will be mixed is after supercooling
By extrusion molding in double screw extruder, underwater cutpellet；
D, the particle to being molded are dehydrated, screen and obtain final product starch-based bio pellet；
65 DEG C~70 DEG C of mixing temperature in wherein step a, incorporation time 4~6 minutes mixes 220 revs/min of rotating speed；
85 DEG C~90 DEG C of mixing temperature in step b, incorporation time 8~10 minutes mixes 350 revs/min of rotating speed；It is mixed in step c
145 DEG C~150 DEG C of temperature is closed, incorporation time 5~8 minutes mixes 150 revs/min of rotating speed.
It is 42 that bio-based pellet and PE are passed through into screw slenderness ratio L/D when preparing casting films：1, output torque 2 ×
3500Nm；Input speed:1500rpm；Output speed:400rpm；Transmission speed ratio:I=3：1 three-layer co-extruded cast film machine A/B/
(weight compares 1 to A：3：1) respectively after extrusion calendaring cooling shaping, trimming winding specifically includes following steps：
Starch-based bio pellet is added in the main frame hopper B of cast film machine, and PE is added in slave hopper A, head section
Processing temperature is 180~240 DEG C, and pressure is set as 30Mpa.120 DEG C~160 DEG C of each area's processing temperature of host B；Head section adds
150 DEG C~160 DEG C of work temperature, head pressure is set as 10Mpa, is received by distributor extrusion, three-roller calendaring cooling forming, trimming
Volume, packaging.
The present invention is described in further detail with reference to specific embodiment：
Embodiment 1：
Bio-based pellet is prepared by following mass percent component：
Prepare curtain coating film method as follows：
A, starch, polyvinyl alcohol and plasticizer are input into 65 DEG C of mixing temperature in high-speed mixer, mix rotating speed 220
Rev/min mixing 4 minutes be well mixed；
B, again by polyethylene and polydactyl acid input high-speed mixer with 90 DEG C of mixing temperature, 350 turns of rotating speed of mixing/
Minute mixing is well mixed for 8 minutes；
C, finally cellulose, crosslinking agent and all of auxiliary agent sequentially input with 150 DEG C of mixing temperature in high-speed mixer,
The mixing 5 minutes of 150 revs/min of mixing rotating speed is well mixed, and the material that will be mixed is by screw slenderness ratio footpath ratio after supercooling:
L/D=52：1；2 × 3500Nm of output torque；Input speed:1500rpm；Output speed:400rpm；Transmission speed ratio:I=3：1
Double screw extruder, with processing conditions：One 150 DEG C of area：Two 160 DEG C of areas：Three 165 DEG C of areas:It is set as 165 DEG C below 4th area
~185 DEG C；Pressure is set as 10MPa；Speed is 45 revs/min, melting, vacuum exhaust, plasticizing, extrusion molding, underwater cutpellet；
D, the particle to being molded are dehydrated, screen and obtain final product starch-based bio pellet；
E, by the starch-based bio pellet after screening and PE material by screw slenderness ratio L/D be 42：1 three-layer co-extruded curtain coating
(weight compares 1 to film machine A/B/A：3：1) after with each area's processing temperature of slave as 150~240 DEG C of difference extrusion calendaring cooling shapings, cut
Side winds.
Embodiment 2：
Bio-based pellet is prepared by following mass percent component：
Prepare curtain coating film method as follows：
A, will starch, polyvinyl alcohol and plasticizer be input into high-speed mixer in be well mixed；
B, again by polyethylene and polydactyl acid input high-speed mixer in, be well mixed；
C, finally cellulose, crosslinking agent and all of auxiliary agent are sequentially input in high-speed mixer it is well mixed, will mixes
Good material is after supercooling by extrusion molding in double screw extruder, underwater cutpellet；
D, the particle to being molded are dehydrated, screen and obtain final product starch-based bio pellet；
E, by the starch-based bio pellet after screening and PE material by cast film machine difference extrusion calendaring cooling shaping after, cut
Side winds.
Embodiment 3：
Bio-based pellet is prepared by following mass percent component：
Curtain coating film method is prepared with embodiment 1, wherein：70 DEG C of mixing temperature in step a, incorporation time 5 minutes, mixing
220 revs/min of rotating speed；85 DEG C of mixing temperature in step b, incorporation time 10 minutes mixes 350 revs/min of rotating speed；Step c
In 145 DEG C of mixing temperature, incorporation time 8 minutes, mix 150 revs/min of rotating speed.
Embodiment 4：
Bio-based pellet is prepared by following mass percent component：
Curtain coating film method is prepared with embodiment 1,68 DEG C of the mixing temperature in step a, incorporation time 5 minutes mixes rotating speed
220 revs/min；88 DEG C of mixing temperature in step b, incorporation time 9 minutes mixes 350 revs/min of rotating speed；It is mixed in step c
148 DEG C of temperature is closed, incorporation time 7 minutes mixes 150 revs/min of rotating speed.
Embodiment 5：
Bio-based pellet is prepared by following mass percent component：
Curtain coating film method is prepared with embodiment 1.
Embodiment 6：
Bio-based pellet is prepared by following mass percent component：
Prepare starch-based bio and be cast film method with embodiment 1.
Degradable casting films prepared by embodiment 1-5 are as shown in table 1 with starch-based bio granule performance：
Table 1：
Degradable cast film performance prepared by embodiment 1-5 is as shown in table 2：
Table 2：
The present invention presses standard GB/T/T29646-2013 and biodegradable starch-resin GB/T27868-2011 standards
Perform.
Claims (10)
1. degradable casting films of starch-based bio, it is characterised in that including following mass percent component：
2. degradable casting films of starch-based bio according to claim 1, it is characterised in that described polyethylene by
LLDPE, LDPE and HDPE in mass ratio 2：1：1 mixing composition.
3. degradable casting films of starch-based bio according to claim 1, it is characterised in that described polydactyl acid is
PLA and PBAT are connect as toughener using ethene, acrylic acid N-butyl, the embedding copolymer of metering system glycidic acid three
Gained after branch granulation.
4. degradable casting films of starch-based bio according to claim 1, it is characterised in that described plasticizer is selected from third
One or more in triol, citric acid, sorbierite, polypropylene glycol.
5. degradable casting films of starch-based bio according to claim 1, it is characterised in that described cellulose is carboxylic first
Base sodium cellulosate, described crosslinking agent is at least one in unsaturated carboxylic acid or anhydrides compound.
6. degradable casting films of starch-based bio according to claim 1, it is characterised in that described auxiliary agent includes lubrication
Agent, hydrophobicity agent and flexibility agent.
7. a kind of preparation method of the degradable casting films of starch-based bio any one of claim 1-6, its feature exists
In comprising the following steps：
A, will starch, polyvinyl alcohol and plasticizer be input into high-speed mixer in be well mixed；
B, again by polyethylene and polydactyl acid input high-speed mixer in, be well mixed；
C, finally cellulose, crosslinking agent and all of auxiliary agent are sequentially input in high-speed mixer it is well mixed, by what is mixed
Material is after supercooling by extrusion molding in double screw extruder, underwater cutpellet；
D, the particle to being molded are dehydrated, screen and obtain final product starch-based bio pellet；
E, by the starch-based bio pellet after screening and PE material by cast film machine distinguish extrusion calendaring cooling shaping after, trimming receipts
Volume.
8. the preparation method of the degradable casting films of starch-based bio according to claim 7, it is characterised in that the step a
In 65 DEG C~70 DEG C of mixing temperature, incorporation time 4~6 minutes, mix 220 revs/min of rotating speed；Mixing temperature in step b
85 DEG C~90 DEG C, incorporation time 8~10 minutes mixes 350 revs/min of rotating speed；Mixing temperature 145 DEG C~150 in step c
DEG C, incorporation time 5~8 minutes mixes 150 revs/min of rotating speed.
9. the preparation method of the degradable casting films of starch-based bio according to claim 7, it is characterised in that the step c
The screw slenderness ratio of middle double screw extruder is:L/D=52：1；2 × 3500Nm of output torque；Input speed:1500rpm；It is defeated
Go out rotating speed:400rpm；Transmission speed ratio:I=3：1, the processing conditions of the double screw extruder is：One 150 DEG C of area：Two areas 160
℃：Three 165 DEG C of areas:It is set as 165 DEG C~185 DEG C below 4th area；Pressure is set as 10MPa；Speed is 45 revs/min, is melted
Melt, vacuum exhaust, plasticizing, extrusion.
10. the preparation method of the degradable casting films of starch-based bio according to claim 7, it is characterised in that the step
In e, cast film machine is three-layer co-extruded machine A/B/A, and extrusion part by weight is 1：3：1, screw slenderness ratio L/D are 42：1, starch
Base biology pellet add cast film machine main frame hopper, PE add slave hopper, each area's processing temperature of slave be 150 DEG C~
240℃。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611052653.XA CN106700134B (en) | 2016-11-24 | 2016-11-24 | Degradable casting films of starch-based bio and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611052653.XA CN106700134B (en) | 2016-11-24 | 2016-11-24 | Degradable casting films of starch-based bio and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN106700134A true CN106700134A (en) | 2017-05-24 |
| CN106700134B CN106700134B (en) | 2019-11-19 |
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| CN201611052653.XA Active CN106700134B (en) | 2016-11-24 | 2016-11-24 | Degradable casting films of starch-based bio and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107082945A (en) * | 2017-06-12 | 2017-08-22 | 太仓雅奥塑业有限公司 | A kind of environmentally-friendly plastic film |
| CN107151410A (en) * | 2017-06-12 | 2017-09-12 | 太仓雅奥塑业有限公司 | A kind of Environment-friendlywater-soluble water-soluble plastics package |
| CN107216489A (en) * | 2017-05-31 | 2017-09-29 | 顾思阳 | Modified starch PVA base composite farm mulch films and preparation method |
| CN107471694A (en) * | 2017-09-13 | 2017-12-15 | 安徽鼎正包装材料有限公司 | A kind of film forming preparation technology of PVA film |
| CN108102191A (en) * | 2017-12-22 | 2018-06-01 | 浙江惠普科技发展有限公司 | A kind of degradable sweet potato starch environment-friendlythin thin film and preparation method thereof |
| CN108774373A (en) * | 2018-06-25 | 2018-11-09 | 安徽鼎正包装材料有限公司 | A kind of express delivery packaging film of PVA bases controlled degradation and Fertilizer Transformed |
| CN109867819A (en) * | 2019-01-11 | 2019-06-11 | 安徽鼎正包装材料有限公司 | Polylactic acid-starch-PVA composite degradable packaging film and preparation method thereof |
| CN110655686A (en) * | 2019-11-13 | 2020-01-07 | 浙江华发生态科技有限公司 | High-starch-content film blowing composite material and preparation method thereof |
| CN111471293A (en) * | 2020-04-27 | 2020-07-31 | 温州优创新型材料有限公司 | Film and processing method thereof |
| CN111574796A (en) * | 2020-05-28 | 2020-08-25 | 佛山市爱地球环保新材料科技有限公司 | Novel material capable of being dissolved after damp-heat sterilization for protective clothing and preparation method |
| CN112480481A (en) * | 2020-11-24 | 2021-03-12 | 杭州金焱包装彩印有限公司 | Pressure-resistant food packaging composite film for plateau environment and preparation method thereof |
| CN112550930A (en) * | 2021-01-04 | 2021-03-26 | 安徽沪通环保包装科技有限公司 | Convenient square-bottom bag and manufacturing method thereof |
| RU2796732C1 (en) * | 2022-08-01 | 2023-05-29 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Ивановский государственный химико-технологический университет" | Composition for producing biodegradable polymer material and biodegradable polymer material on its basis |
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| CN107216489A (en) * | 2017-05-31 | 2017-09-29 | 顾思阳 | Modified starch PVA base composite farm mulch films and preparation method |
| CN107082945A (en) * | 2017-06-12 | 2017-08-22 | 太仓雅奥塑业有限公司 | A kind of environmentally-friendly plastic film |
| CN107151410A (en) * | 2017-06-12 | 2017-09-12 | 太仓雅奥塑业有限公司 | A kind of Environment-friendlywater-soluble water-soluble plastics package |
| CN107471694A (en) * | 2017-09-13 | 2017-12-15 | 安徽鼎正包装材料有限公司 | A kind of film forming preparation technology of PVA film |
| CN108102191A (en) * | 2017-12-22 | 2018-06-01 | 浙江惠普科技发展有限公司 | A kind of degradable sweet potato starch environment-friendlythin thin film and preparation method thereof |
| CN108774373A (en) * | 2018-06-25 | 2018-11-09 | 安徽鼎正包装材料有限公司 | A kind of express delivery packaging film of PVA bases controlled degradation and Fertilizer Transformed |
| CN109867819A (en) * | 2019-01-11 | 2019-06-11 | 安徽鼎正包装材料有限公司 | Polylactic acid-starch-PVA composite degradable packaging film and preparation method thereof |
| CN110655686A (en) * | 2019-11-13 | 2020-01-07 | 浙江华发生态科技有限公司 | High-starch-content film blowing composite material and preparation method thereof |
| CN111471293A (en) * | 2020-04-27 | 2020-07-31 | 温州优创新型材料有限公司 | Film and processing method thereof |
| CN111574796A (en) * | 2020-05-28 | 2020-08-25 | 佛山市爱地球环保新材料科技有限公司 | Novel material capable of being dissolved after damp-heat sterilization for protective clothing and preparation method |
| CN112480481A (en) * | 2020-11-24 | 2021-03-12 | 杭州金焱包装彩印有限公司 | Pressure-resistant food packaging composite film for plateau environment and preparation method thereof |
| CN112550930A (en) * | 2021-01-04 | 2021-03-26 | 安徽沪通环保包装科技有限公司 | Convenient square-bottom bag and manufacturing method thereof |
| RU2796732C1 (en) * | 2022-08-01 | 2023-05-29 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Ивановский государственный химико-технологический университет" | Composition for producing biodegradable polymer material and biodegradable polymer material on its basis |
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