CN110016218A - A kind of degradable plastic bag masterbatch and preparation method thereof - Google Patents
A kind of degradable plastic bag masterbatch and preparation method thereof Download PDFInfo
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- CN110016218A CN110016218A CN201910377987.1A CN201910377987A CN110016218A CN 110016218 A CN110016218 A CN 110016218A CN 201910377987 A CN201910377987 A CN 201910377987A CN 110016218 A CN110016218 A CN 110016218A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/46—Applications of disintegrable, dissolvable or edible materials
- B65D65/466—Bio- or photodegradable packaging materials
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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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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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
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/02—Starch; Degradation products thereof, e.g. dextrin
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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
- C08J2435/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least one other carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Derivatives of such polymers
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/04—Polyesters derived from hydroxy carboxylic 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/053—Polyhydroxylic alcohols
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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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/12—Esters; Ether-esters of cyclic polycarboxylic acids
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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
- C08K9/00—Use of pretreated ingredients
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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
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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Abstract
The invention discloses a kind of degradable plastic bag masterbatch and preparation method thereof, the degradable plastic bag of preparation has excellent water resistance, meanwhile, mechanical property is good, and bearing capacity is strong, and degradation property is significant, and no pollution to the environment is free of a burden.Ball milling modification is carried out using cornstarch, tapioca, glycerol and nano-titanium dioxide, starch viscosity can be made to enhance, while being wrapped in nano-titanium dioxide surface, improves the reunion performance of nano-titanium dioxide, is promoted evenly dispersed；It is further modified followed by polymaleic anhydride, the hydroxyl that can use carboxyl and starch that polymaleic anhydride hydrolyzes to form carries out cross-linking reaction, form ester bond, promote the compatibility of starch-nano-titanium dioxide and polylactic acid base, enhance its interface interaction, interface binding power is improved, to significantly improve the mechanical property and water resistance of target material.
Description
Technical field
The invention belongs to environmentally-friendly plastic technical field, especially a kind of degradable plastic bag masterbatch and preparation method thereof.
Background technique
Plastics also bring infinite future trouble, Chinese year modeling while bringing convenience to people's lives to environment
Discarding amount is expected at 1,000,000 tons or more, and ratio of the waste plastic in rubbish accounts for 40%, this large amount of waste plastic conduct
Rubbish is buried under the ground, and undoubtedly brings bigger pressure to the cultivable land natively lacked.
Starch-poly-lactic acid material have good degradability, while its cost is relatively low, it is functional, to degradable
The development of polybag has Chinese medicine meaning, still, in its preparation process, since the blended characteristic of starch and polylactic acid is not good enough,
Causing the mechanical strength of polybag can not ensure.
Summary of the invention
In view of the above-mentioned problems, starch and polylactic acid compatibility are good the present invention is intended to provide a kind of mechanical strength is preferable
Degradable plastic bag masterbatch and preparation method thereof.
The invention is realized by the following technical scheme:
A kind of degradable plastic bag masterbatch, is made of raw material from the following weight:
Nano-titanium dioxide 5-10, cornstarch 20-25, tapioca 10-15, glycerol 10-12, polylactic acid 60-70, plasticizer
5-10, antioxidant 2-3, coupling agent 2-4.
Further, preparation method includes the following steps:
(1) nano-titanium dioxide is put into ethyl alcohol, 30-40min is ultrasonically treated at 70-76 DEG C, is then filtered, by gains
It is put into after carrying out microwave treatment 20-30s in microwave device and gained nano-titanium dioxide is put into ethyl alcohol again, continue at ultrasound
20-30min is managed, filtering is put at 100-120 DEG C after taking-up and dries；
(2) nano-titanium dioxide obtained by step (1) is uniformly mixed with cornstarch, tapioca, then with 2- at 2-4 DEG C
The linear velocity ball milling 10-20min of 3m/s, is then added the deionized water, glycerol of its 5-10 times of volume, in turning for 100-150rpm
Under speed, after being warming up to 90-93 DEG C with the rate of 2-3 DEG C/min, continues to stir 40-50min, is then freeze-dried gains,
Obtain starch-nano-titanium dioxide；Ball milling modification is carried out using cornstarch, tapioca, glycerol and nano-titanium dioxide, it can
Enhance starch viscosity, while being wrapped in nano-titanium dioxide surface, improve the reunion performance of nano-titanium dioxide, promotes uniform
Dispersion；
(3) starch-nano-titanium dioxide obtained by step (2) is modified using polymaleic anhydride, obtains polymaleic anhydride-shallow lake
Powder-nano-titanium dioxide；
(4) polylactic acid is added in high speed mixing smelting machine, 10-20min is kneaded at 130-150 DEG C, step (3) then are added
Gains, plasticizer, antioxidant, coupling agent are transferred in double screw extruder, at 140-180 DEG C after continueing to mix 10-20min
Lower extruding pelletization.
Further, step (1) the ultrasonic treatment condition is 40-43KHz.
Further, step (1) microwave treatment conditions are 800-1000W.
Further, step (3) polymaleic anhydride-starch-nano-titanium dioxide is the preparation method comprises the following steps: by step
(2) gains are added in three-necked flask, and n,N-Dimethylformamide, deionized water is added, in 50-55 DEG C, 150-
20-30min is stirred under 200rpm, polymaleic anhydride is then added, and be warming up to 81-83 DEG C, reacts 18- at 300-320rpm
20h, filtering, acetone washing gains 2-3 times are subsequently placed in drying at 50-55 DEG C, obtain polymaleic anhydride-starch-nanometer two
Titanium oxide；It is further modified followed by polymaleic anhydride, can use the carboxyl that polymaleic anhydride hydrolyzes to form
Cross-linking reaction is carried out with the hydroxyl of starch, forms ester bond, promotes the compatible of starch-nano-titanium dioxide and polylactic acid base
Property, enhance its interface interaction, improves interface binding power.
Further, step (4) the plasticizer is phthalic acid two (2- ethyl hexyl) ester.
Further, step (4) antioxidant is ascorbyl palmitate.
Further, step (4) coupling agent is titanate coupling agent.
Beneficial effects of the present invention: degradable plastic bag prepared by the present invention has excellent water resistance, meanwhile, power
Performance is good, and bearing capacity is strong, and degradation property is significant, and no pollution to the environment is free of a burden.Utilize cornstarch, tapioca, glycerol
Ball milling modification is carried out with nano-titanium dioxide, starch viscosity can be made to enhance, while being wrapped in nano-titanium dioxide surface, improvement is received
The reunion performance of rice titanium dioxide, promotes evenly dispersed；It is further modified followed by polymaleic anhydride, Ke Yili
The hydroxyl of the carboxyl and starch that are hydrolyzed to form with polymaleic anhydride carries out cross-linking reaction, forms ester bond, promotes starch-nanometer two
The compatibility of titanium oxide and polylactic acid base enhances its interface interaction, interface binding power is improved, to significantly improve target material
The mechanical property and water resistance of material, meanwhile, nano-titanium dioxide is uniformly introduced into polylactic acid base, impetus is formed,
Mechanical property is promoted, and is interacted with starch, the degradation property of target material is substantially increased.
Specific embodiment
Illustrate the present invention with specific embodiment below, but is not limitation of the present invention.
Embodiment 1
A kind of degradable plastic bag masterbatch, is made of raw material from the following weight:
Nano-titanium dioxide 5, cornstarch 20, tapioca 10, glycerol 10, polylactic acid 60, plasticizer 5, antioxidant 2, coupling
Agent 2.
Further, preparation method includes the following steps:
(1) nano-titanium dioxide is put into ethyl alcohol, 30min is ultrasonically treated at 70 DEG C, is then filtered, gains are put into micro-
Gained nano-titanium dioxide is put into ethyl alcohol again after carrying out microwave treatment 20s in wave apparatus, continues to be ultrasonically treated 20min,
Filtering, is put at 100 DEG C after taking-up and dries；
(2) nano-titanium dioxide obtained by step (1) is uniformly mixed with cornstarch, tapioca, then with 2m/s at 2 DEG C
Linear velocity ball milling 10min, deionized water, the glycerol of its 5 times of volumes is then added, under the revolving speed of 100rpm, with 2 DEG C/min
Rate be warming up to 90 DEG C after, continue stir 40min, then gains are freeze-dried, obtain starch-nano-titanium dioxide；
(3) starch-nano-titanium dioxide obtained by step (2) is modified using polymaleic anhydride, obtains polymaleic anhydride-shallow lake
Powder-nano-titanium dioxide；
(4) polylactic acid is added in high speed mixing smelting machine, 10min is kneaded at 130 DEG C, then be added step (3) gains,
Plasticizer, antioxidant, coupling agent are transferred in double screw extruder after continueing to mix 10min, the extruding pelletization at 140 DEG C.
Further, step (1) the ultrasonic treatment condition is 40KHz.
Further, step (1) microwave treatment conditions are 800W.
Further, step (3) polymaleic anhydride-starch-nano-titanium dioxide is the preparation method comprises the following steps: by step
(2) gains are added in three-necked flask, and n,N-Dimethylformamide, deionized water is added, and are stirred at 50 DEG C, 150rpm
Then polymaleic anhydride is added in 20min, and be warming up to 81 DEG C, reacts 18h at 300 rpm, filtering, acetone washing gains 2
It is secondary, it is subsequently placed in drying at 50 DEG C, obtains polymaleic anhydride-starch-nano-titanium dioxide.
Further, step (4) the plasticizer is phthalic acid two (2- ethyl hexyl) ester.
Further, step (4) antioxidant is ascorbyl palmitate.
Further, step (4) coupling agent is titanate coupling agent.
Embodiment 2
A kind of degradable plastic bag masterbatch, is made of raw material from the following weight:
Nano-titanium dioxide 7, cornstarch 22, tapioca 13, glycerol 11, polylactic acid 65, plasticizer 8, antioxidant 3, coupling
Agent 3.
Further, preparation method includes the following steps:
(1) nano-titanium dioxide is put into ethyl alcohol, 35min is ultrasonically treated at 73 DEG C, is then filtered, gains are put into micro-
Gained nano-titanium dioxide is put into ethyl alcohol again after carrying out microwave treatment 25s in wave apparatus, continues to be ultrasonically treated 25min,
Filtering, is put at 110 DEG C after taking-up and dries；
(2) nano-titanium dioxide obtained by step (1) is uniformly mixed with cornstarch, tapioca, then with 3m/s at 3 DEG C
Linear velocity ball milling 15min, deionized water, the glycerol of its 7 times of volumes is then added, under the revolving speed of 130rpm, with 3 DEG C/min
Rate be warming up to 91 DEG C after, continue stir 45min, then gains are freeze-dried, obtain starch-nano-titanium dioxide；
(3) starch-nano-titanium dioxide obtained by step (2) is modified using polymaleic anhydride, obtains polymaleic anhydride-shallow lake
Powder-nano-titanium dioxide；
(4) polylactic acid is added in high speed mixing smelting machine, 15min is kneaded at 140 DEG C, then be added step (3) gains,
Plasticizer, antioxidant, coupling agent are transferred in double screw extruder after continueing to mix 15min, the extruding pelletization at 150 DEG C.
Further, step (1) the ultrasonic treatment condition is 42KHz.
Further, step (1) microwave treatment conditions are 900W.
Further, step (3) polymaleic anhydride-starch-nano-titanium dioxide is the preparation method comprises the following steps: by step
(2) gains are added in three-necked flask, and n,N-Dimethylformamide, deionized water is added, and are stirred at 53 DEG C, 170rpm
Then polymaleic anhydride is added in 25min, and be warming up to 82 DEG C, and 18-20h is reacted at 300-320rpm, filtering, acetone washing
Gains 2-3 times are subsequently placed in drying at 50-55 DEG C, obtain polymaleic anhydride-starch-nano-titanium dioxide.
Further, step (4) the plasticizer is phthalic acid two (2- ethyl hexyl) ester.
Further, step (4) antioxidant is ascorbyl palmitate.
Further, step (4) coupling agent is titanate coupling agent.
Embodiment 3
A kind of degradable plastic bag masterbatch, which is characterized in that be made of raw material from the following weight:
Nano-titanium dioxide 8, cornstarch 22, tapioca 13, glycerol 11, polylactic acid 65, plasticizer 8, antioxidant 3, coupling
Agent 3.
Further, preparation method includes the following steps:
(1) nano-titanium dioxide is put into ethyl alcohol, 35min is ultrasonically treated at 73 DEG C, is then filtered, gains are put into micro-
Gained nano-titanium dioxide is put into ethyl alcohol again after carrying out microwave treatment 25s in wave apparatus, continues to be ultrasonically treated 25min,
Filtering, is put at 110 DEG C after taking-up and dries；
(2) nano-titanium dioxide obtained by step (1) is uniformly mixed with cornstarch, tapioca, then with 3m/s at 3 DEG C
Linear velocity ball milling 15min, deionized water, the glycerol of its 8 times of volumes is then added, under the revolving speed of 120rpm, with 3 DEG C/min
Rate be warming up to 91 DEG C after, continue stir 45min, then gains are freeze-dried, obtain starch-nano-titanium dioxide；
(3) starch-nano-titanium dioxide obtained by step (2) is modified using polymaleic anhydride, obtains polymaleic anhydride-shallow lake
Powder-nano-titanium dioxide；
(4) polylactic acid is added in high speed mixing smelting machine, 15min is kneaded at 140 DEG C, then be added step (3) gains,
Plasticizer, antioxidant, coupling agent are transferred in double screw extruder after continueing to mix 15min, the extruding pelletization at 150 DEG C.
Further, step (1) the ultrasonic treatment condition is 43KHz.
Further, step (1) microwave treatment conditions are 900W.
Further, step (3) polymaleic anhydride-starch-nano-titanium dioxide is the preparation method comprises the following steps: by step
(2) gains are added in three-necked flask, and n,N-Dimethylformamide, deionized water is added, and are stirred at 53 DEG C, 170rpm
Then polymaleic anhydride is added in 25min, and be warming up to 82 DEG C, and 19h is reacted at 310rpm, filtering, acetone washing gains 3
It is secondary, it is subsequently placed in drying at 52 DEG C, obtains polymaleic anhydride-starch-nano-titanium dioxide.
Further, step (4) the plasticizer is phthalic acid two (2- ethyl hexyl) ester.
Further, step (4) antioxidant is ascorbyl palmitate.
Further, step (4) coupling agent is titanate coupling agent.
Comparative example 1
The addition of nano-titanium dioxide is omitted compared to embodiment 2 in this comparative example, and method and step in addition to this is homogeneous
Together.
Comparative example 2
The addition of cornstarch, tapioca is omitted compared to embodiment 2 in this comparative example, method step in addition to this
It is rapid all the same.
Comparative example 3
The addition of polymaleic anhydride is omitted compared to embodiment 2 in this comparative example, and method and step in addition to this is homogeneous
Together.
The above each group embodiment and the resulting plastic matrix of comparative example are blow molded into the plastics of about 0.05 mm thickness
Film makes a service test:
Referring to the plastic ink absorption test method of GB/T 1034-1998 standard, to sample obtained by each group embodiment and comparative example
Product carry out water imbibition test, record its water absorption rate.
Using puller system, the longitudinally, laterally tensile strength of sample obtained by each group embodiment and comparative example is surveyed
Examination.
By in the embedment natural environment soil of plastic packaging bag obtained by each group of phase homogenous quantities, it is specially embedded to farmland 100cm
In the heatable adobe sleeping platform of × 100cm × 100cm, in 30d and 120d, its weight-loss ratio is detected.
Test result is as shown in table 1:
Table 1
As can be seen from Table 1, degradable plastic bag prepared by the present invention has excellent water resistance, meanwhile, mechanical property
Good, bearing capacity is strong, and degradation property is significant, and no pollution to the environment is free of a burden.
Claims (8)
1. a kind of degradable plastic bag masterbatch, which is characterized in that be made of raw material from the following weight:
Nano-titanium dioxide 5-10, cornstarch 20-25, tapioca 10-15, glycerol 10-12, polylactic acid 60-70, plasticizer
5-10, antioxidant 2-3, coupling agent 2-4.
2. a kind of degradable plastic bag masterbatch according to claim 1, which is characterized in that preparation method includes following
Step:
(1) nano-titanium dioxide is put into ethyl alcohol, 30-40min is ultrasonically treated at 70-76 DEG C, is then filtered, by gains
It is put into after carrying out microwave treatment 20-30s in microwave device and gained nano-titanium dioxide is put into ethyl alcohol again, continue at ultrasound
20-30min is managed, filtering is put at 100-120 DEG C after taking-up and dries；
(2) nano-titanium dioxide obtained by step (1) is uniformly mixed with cornstarch, tapioca, then with 2- at 2-4 DEG C
The linear velocity ball milling 10-20min of 3m/s, is then added the deionized water, glycerol of its 5-10 times of volume, in turning for 100-150rpm
Under speed, after being warming up to 90-93 DEG C with the rate of 2-3 DEG C/min, continues to stir 40-50min, is then freeze-dried gains,
Obtain starch-nano-titanium dioxide；
(3) starch-nano-titanium dioxide obtained by step (2) is modified using polymaleic anhydride, obtains polymaleic anhydride-shallow lake
Powder-nano-titanium dioxide；
(4) polylactic acid is added in high speed mixing smelting machine, 10-20min is kneaded at 130-150 DEG C, step (3) then are added
Gains, plasticizer, antioxidant, coupling agent are transferred in double screw extruder, at 140-180 DEG C after continueing to mix 10-20min
Lower extruding pelletization.
3. a kind of degradable plastic bag masterbatch according to claim 2, which is characterized in that at step (1) ultrasound
Manage bar part is 40-43KHz.
4. a kind of degradable plastic bag masterbatch according to claim 2, which is characterized in that at step (1) described microwave
Manage bar part is 800-1000W.
5. a kind of degradable plastic bag masterbatch according to claim 2, which is characterized in that step (3) the poly- Malaysia
Acid anhydrides-starch-nano-titanium dioxide is the preparation method comprises the following steps: step (2) gains are added in three-necked flask, and N is added, N-
Dimethylformamide, deionized water stir 20-30min at 50-55 DEG C, 150-200rpm, polymaleic anhydride are then added,
And it is warming up to 81-83 DEG C, 18-20h is reacted at 300-320rpm, is filtered, and acetone washing gains 2-3 times are subsequently placed in 50-
It is dry at 55 DEG C, obtain polymaleic anhydride-starch-nano-titanium dioxide.
6. a kind of degradable plastic bag masterbatch according to claim 2, which is characterized in that step (4) the plasticizer
For phthalic acid two (2- ethyl hexyl) ester.
7. a kind of degradable plastic bag masterbatch according to claim 2, which is characterized in that step (4) described antioxidant
For ascorbyl palmitate.
8. a kind of degradable plastic bag masterbatch according to claim 2, which is characterized in that step (4) described coupling agent
For titanate coupling agent.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113896955A (en) * | 2021-11-08 | 2022-01-07 | 蚌埠天成包装科技股份有限公司 | Starch-based sheet composition and preparation method thereof |
| CN113956546A (en) * | 2021-11-08 | 2022-01-21 | 蚌埠天成包装科技股份有限公司 | Preparation method of starch-based fully-degradable blown film composition |
| CN113980362A (en) * | 2021-11-08 | 2022-01-28 | 蚌埠天成包装科技股份有限公司 | Starch-based foaming composition and preparation method thereof |
| CN115011220A (en) * | 2022-06-15 | 2022-09-06 | 安徽登王化工有限公司 | Impact-resistant powder coating and preparation method thereof |
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| CN115011220B (en) * | 2022-06-15 | 2023-02-28 | 安徽登王化工有限公司 | Impact-resistant powder coating and preparation method thereof |
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