CN108559232A - A kind of starch plastics film and preparation method thereof that tearing-resistant performance is excellent - Google Patents
A kind of starch plastics film and preparation method thereof that tearing-resistant performance is excellent Download PDFInfo
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- C08J5/18—Manufacture of films or sheets
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- 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
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- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
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- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
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- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K5/00—Use of organic ingredients
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- C08K5/053—Polyhydroxylic alcohols
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- C08K5/00—Use of organic ingredients
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- C08K5/098—Metal salts of carboxylic acids
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- C08K5/11—Esters; Ether-esters of acyclic polycarboxylic acids
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- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/20—Carboxylic acid amides
Abstract
The present invention relates to a kind of starch plastics films and preparation method thereof that tearing-resistant performance is excellent, it is squeezed out using the larger extruding machine with two screw rods engaging melt blending in the same direction of shear strength and is prepared using biodegradable resin, starch, plasticiser, lubricant, crosslinking agent, reinforcing agent as raw material.This is simple for process, easy to operate, can be continuously produced.
Description
Technical field
The invention belongs to technical field of polymer materials, and in particular to a kind of content of starch is high, mechanical performance is excellent, prepares
It is simple for process and can serialization starch plastics film preparation method.
Background technology
In recent years, white pollution problems are increasingly severe, cause the great attention of global range, and various countries start to formulate phase
Laws and regulations are closed, promulgates prohibit modeling decree successively.Therefore, biodegradable plastics also known as environmental-friendly plastic come into being.
Current industrialized biodegradable plastic has poly terephthalic acid-adipic acid-butanediol ester, polylactic acid, gathers oneself
Diacid-succinic acid-butanediol ester, poly butylene succinate, polycaprolactone, poly-hydroxy fatty acid copolyesters.Wherein, gather to benzene
Dioctyl phthalate-adipic acid-butanediol ester and polyhydroxyalkanoate have excellent ductility, elongation at break and impact resistance etc.
Mechanical performance is current degradative plastics material（Especially membrane product material）The biodegradable modeling being most widely used in the market
One of material.But when, compared to traditional petroleum base resin material, price is costly.
Starch belongs to natural macromolecular material, biodegradable, derives from a wealth of sources and renewable, cheap.By molecule
Chain structure is divided into amylose and amylopectin.In addition, modified starch is the hydroxyl on native starch strand or strand
It carries out physics or chemical treatment obtains that particle is uniform, grain size is tiny, the starch of surface hydrophobicity.It therefore, can by starch filled arrive
Cost can be greatly reduced in Biodegradable resin.
China Patent Publication No. CN102898794A and CN103205021A disclose a kind of starch and PBAT blends and
Preparation method, concrete technology are first plasticized with composite elasticizer melt blending for starch, then mixing is blended with PBAT or melts crowded
Go out to prepare, this method has obtained a kind of starch-based biodegradable material, the relatively low 7 ~ 16MPa of tensile strength of material, such method
Technique is cumbersome and consumes energy.China Patent Publication No. CN103044866A discloses a kind of plastic starch conversion PBAT fully biodegradables
The preparation method of material is solved, is granulated through screw rod melting extrusion after starch, plasticizer, PBAT can be blended, the technique is simpler, material
Expect tensile strength it is relatively low be 10 ~ 15MPa, and starch maximum adding quantity is 30%, and starch filled amount has greater room for improvement.
Invention content
In view of the problems of the existing technology, it is an object of the invention to develop, a kind of mechanical performance is excellent, content of starch
It is high, simple for process, can serialization prepare that tearing-resistant performance is excellent and the preparation work of the starch plastics film of biodegradable
Skill, using biodegradable resin, starch, plasticiser, lubricant, crosslinking agent, reinforcing agent as raw material, using higher shear intensity
Extruding machine with two screw rods engaging melting extrusion one-step technology in the same direction.
The excellent starch plastics film of a kind of tearing-resistant performance, it is characterised in that pass through the group of following parts by weight
Divide and is process：
（A）50 ~ 100 parts of biodegradable resins；
（B）0 ~ 50 part of starch；
（C）5 ~ 25 parts of plasticisers；
（D）0.3 ~ 0.5 part of lubricant；
（E）0.3 ~ 0.5 part of crosslinking agent；
（F）0 ~ 6 portion of reinforcing agent.
The excellent starch plastics film of a kind of tearing-resistant performance, it is characterised in that pass through the group of following parts by weight
Divide and is process：
（A）50 ~ 65 parts of biodegradable resins；
（B）35 ~ 50 parts of starch；
（C）5 ~ 15 parts of plasticisers；
（D）0.3 ~ 0.5 part of lubricant；
（E）0.3 ~ 0.5 part of crosslinking agent；
（F）2 ~ 4 portions of reinforcing agents.
A kind of excellent starch plastics film of tearing-resistant performance, it is characterised in that the biodegradable tree
Fat is polylactic acid, poly terephthalic acid-adipic acid-butanediol ester, poly terephthalic acid-succinic acid-butanediol ester, poly-succinic
Butanediol ester, poly-succinic-adipic acid-butanediol ester, poly adipate succinic acid ester, polycaprolactone, polyhydroxyalkanoate
One or more compositions.
The excellent starch plastics film of a kind of tearing-resistant performance, it is characterised in that the starch is natural form sediment
One or more compositions of powder or modified starch, wherein native starch are cornstarch, wheaten starch, potato starch, cassava
Starch or other cereal starch, modified starch are the starch that native starch is become smaller by particle diameter after physical or chemical modification.
The excellent starch plastics film of a kind of tearing-resistant performance, it is characterised in that the plasticiser is second two
Alcohol, 1,2- propylene glycol, 1,3- propylene glycol, 1,2- butanediols, 1,3 butylene glycol, 1,4- butanediols, 1,2,3- glycerine, Ji Wusi
Alcohol, dipentaerythritol, 1,2,3,4,5- pentitols, water, sorbierite and its derivative, formic acid, acetic acid, propionic acid, butyric acid, octanoic acid,
Valeric acid, caproic acid, capric acid, stearic acid, hydroxyacetic acid and its derivative, lactic acid, citric acid and its derivative, coffee
One or more compositions of acid and its derivative, maleic acid and its derivative.
The excellent starch plastics film of a kind of tearing-resistant performance, it is characterised in that the lubricant is oleic acid
Amide, erucyl amide, dihydroxypropyl octadecane acid esters, monoglyceride, white oil, polyethylene wax, silicone oil, calcium stearate, stearic acid
One or more compositions of zinc.
The excellent starch plastics film of a kind of tearing-resistant performance, it is characterised in that the crosslinking agent is inclined phosphorus
Sour sodium, potassium metaphosphate, calcium metaphosphate, magnesium metaphosphorate, ammonium metaborate, tetraboric acid ammonium, sodium tetraborate, dipotassium tetraborate, potassium metaborate,
One or more compositions of sodium hypophosphite, potassium hypophosphite, calcium hypophosphite, magnesium hypophosphite.
The excellent starch plastics film of a kind of tearing-resistant performance, it is characterised in that the reinforcing agent is dioxy
SiClx, magnesium sulfate, barium sulfate, calcium sulfate, magnesium carbonate, magnesium hydroxide, magnesium silicate, calcium carbonate, clay, montmorillonite, hydrotalcite, phosphorus
Lime stone, galapectite, talcum powder, carbon nanotube, graphite, mica, kaolin, Attagel diatomite, clay, bentonite, wollastonite,
One or more compositions of feldspar, diopside, the tremolite.
A kind of preparation method of the excellent starch plastics film of the tearing-resistant performance, steps of the method are：
（1）By biodegradable resin, starch, plasticiser, lubricant, crosslinking agent, reinforcing agent, machinery is mixed in high-speed mixer
It closes uniform；
（2）Using the extruding machine with two screw rods engaging melt blending extruding pelletization in the same direction of higher shear intensity.
A kind of preparation method of the excellent starch plastics film of tearing-resistant performance, it is characterised in that the step
Suddenly（2）In in the same direction extruding machine with two screw rods engaging draw ratio 40 ~ 48,130 ~ 160 DEG C of processing technology temperature, Co rotating Twin Screw Extrusion
150 ~ 300RPM/min of machine screw speed.
A kind of excellent starch plastics film of above-mentioned tearing-resistant performance is in 190 DEG C, under the conditions of 2160g, melt index
For 1 ~ 10g/10min, preferably 3 ~ 5 g/10min.
A kind of membrane product transverse tensile strength of the excellent starch plastics film of above-mentioned tearing-resistant performance is 18 ~ 24
MPa, 230 ~ 500 % of transverse breakage elongation, 7 ~ 9 N of lateral tearability；Longitudinal tensile strength is 19 ~ 26 MPa, longitudinal fracture
140 ~ 240 % of elongation, 3 ~ 6 N of tearability；6 ~ 10 N/15mm of heat seal strength.
A kind of membrane product of the excellent starch plastics film of above-mentioned tearing-resistant performance drops for 30 days under composting conditions
90% or more solution；Membrane product is placed at room temperature for preservation, and inner membrance products machinery performance is unchanged within 6 months, 1 year inner membrance product tensile strength
About 40 ~ 45% are had dropped, elongation at break has dropped 25 ~ 60%, and tearability is without significant change.
Compared with the prior art, the present invention has following innovation：
（1）Starch plastics film prepared by the present invention, not only biodegradable but also content of starch are high, mechanical performance
It is excellent.Wherein, starch filled amount is up to 44 %, 18.32 MPa of film transverse tensile strength, 8.86 N of lateral tearability；Film
Longitudinal tensile strength 18.75,5.86 N of longitudinal tear degree；Mechanical property improves nearly 1 times compared with the prior art.
（2）The preparation process of the present invention is simple, and easy to operate, low energy consumption, can serialization industrial production.
Specific implementation mode
The present invention is further described with reference to embodiment, the scope of the present invention is not restricted by the embodiments.This hair
Bright range proposes in detail in the claims.
Test melt index is carried out according to ASTM D1238,190 DEG C, is tested under 2160g load；
Using the tensile property of WDL-02 film tensile testing machine test polymers film/thin slice, bioassay standard is with reference to GB/T
1040.3-2006；Using Ai Laimenduofu types testing machine testing film/thin slice tearing-resistant performance, bioassay standard is with reference to GB/T
16578.2-2009；
The thickness of plastic film is according to 6672 standard testings of GB/T；
The heat seal strength of plastic film is according to GB/T 2358-1998 standard testings, sample preparation thickness >=25 μm, width 15mm；
The compost Degrading experiment of plastic film records its whole degradation time according to the requirement compost of ASTM D5988-2003.
Embodiment 1-3
Each Example formulations that the present invention provides are as shown in table 1, long using 35 extruder extruding pelletization of meshed double screw in the same direction
Diameter is than 40,140 DEG C of prilling temperature, 160 RPM/min of engine speed；Using 45 Single screw extrusion inflation film manufacturing machine blown films, blown film temperature
130 DEG C, blow-up ratio about 3.The results are shown in Table 2 for its membrane product test data.
1 Example formulations of table
Cornstarch, which is changed to the cereal starch such as wheaten starch, potato starch, tapioca, in those embodiments finally can also reach
The similar technique effect of embodiment.
In those embodiments pentaerythrite be changed to lactic acid, lactic acid derivative, ethylene glycol, 1,2- propylene glycol, 1,3- propylene glycol,
1,2- butanediols, 1,3 butylene glycol, 1,4- butanediols, 1,2,3- glycerine, water, dipentaerythritol, 1,2,3,4,5- pentitols,
Water, sorbierite and its derivative, formic acid, acetic acid, propionic acid, butyric acid, octanoic acid, valeric acid, caproic acid, capric acid, stearic acid, hydroxyacetic acid and
Its derivative, citric acid and its derivative, caffeic acid and its derivative finally can also reach the similar technique effect of embodiment.
Erucyl amide is changed to oleamide, dihydroxypropyl octadecane acid esters, monoglyceride, white oil, gathers in those embodiments
Ethylene waxes, silicone oil, calcium stearate, zinc stearate finally can also reach the similar technique effect of embodiment.
In those embodiments sodium tetraborate be changed to sodium metaphosphate, potassium metaphosphate, calcium metaphosphate, magnesium metaphosphorate, ammonium metaborate,
Tetraboric acid ammonium, dipotassium tetraborate, potassium metaborate, sodium hypophosphite, potassium hypophosphite, calcium hypophosphite, magnesium hypophosphite finally can also reach real
Apply the similar technique effect of example.
In those embodiments silica be changed to magnesium sulfate, barium sulfate, calcium sulfate, magnesium carbonate, magnesium hydroxide, magnesium silicate,
Calcium carbonate, clay, montmorillonite, hydrotalcite, apatite, galapectite, talcum powder, carbon nanotube, graphite, mica, kaolin, silicon magnesium
Native diatomite, clay, bentonite, wollastonite, feldspar, diopside, the tremolite finally can also reach the similar technology effect of embodiment
Fruit.
2 membrane product mechanical performance of table and degradation data
By the above experimental example and comparative example, it is apparent that addition crosslinking agent is with reinforcing agent can increase substantially the drawing of membrane product
Stretch intensity and tearability, wherein tensile strength improves 27 ~ 70%, and tearability improves 75 ~ 200%.
Embodiment 4
1）By poly terephthalic acid -20 parts of adipic acid-butanediol ester, poly terephthalic acid -20 parts of succinic acid-butanediol ester, gather
20 parts of succinic acid-butanediol ester, 20 parts of cornstarch, 20 parts of modified starch, 1 part of ethylene glycol, 1 part of 1,2- propylene glycol, 1,3- the third two
3 parts of alcohol, 0.2 part of zinc stearate, 0.1 part of potassium borate, 0.1 part of potassium metaborate, 0.1 part of sodium hypophosphite, covers 0.1 part of calcium stearate
De- 2 parts of soil mechanical mixture in high-speed mixer is uniform；
2）Using extruding machine with two screw rods engaging melt blending extruding pelletization in the same direction, the length of the extruding machine with two screw rods engaging in the same direction of use
Diameter is than 48,160 DEG C of processing technology temperature, parallel dual-screw extruding machine screw speed 300RPM/min；Using 45 Single screw extrusions
Inflation film manufacturing machine blown film, 130 DEG C of blown film temperature, blow-up ratio about 3.
Embodiment 5
1）By 30 parts of poly adipate succinic acid ester, 30 parts of polycaprolactone, 30 parts of polyhydroxyalkanoate, 10 parts of potato starch, lemon
20 parts of lemon acid, 0.5 part of monoglyceride, 0.5 part of magnesium metaphosphorate, 6 parts of silica mechanical mixture in high-speed mixer are uniform；
2）Using extruding machine with two screw rods engaging melt blending extruding pelletization in the same direction, the length of the extruding machine with two screw rods engaging in the same direction of use
Diameter is than 45,160 DEG C of processing technology temperature, parallel dual-screw extruding machine screw speed 250RPM/min；Using 45 Single screw extrusions
Inflation film manufacturing machine blown film, 130 DEG C of blown film temperature, blow-up ratio about 3.
Embodiment 6
1）By 40 parts of poly butylene succinate, poly-succinic -40 parts of adipic acid-butanediol ester, 20 parts of wheaten starch, 1,4- fourths
15 parts of glycol, 0.3 part of polyethylene wax, 0.5 part of sodium metaphosphate, 6 parts of graphite mechanical mixture in high-speed mixer are uniform；
2）Using extruding machine with two screw rods engaging melt blending extruding pelletization in the same direction, the length of the extruding machine with two screw rods engaging in the same direction of use
Diameter is than 40,130 DEG C of processing technology temperature, parallel dual-screw extruding machine screw speed 250RPM/min；Using 45 Single screw extrusions
Inflation film manufacturing machine blown film, 130 DEG C of blown film temperature, blow-up ratio about 3.
3 membrane product mechanical performance of table and degradation data
。
Claims (10)
1. a kind of starch plastics film that tearing-resistant performance is excellent, it is characterised in that by the component of following parts by weight is processed
At：
（A）50 ~ 100 parts of biodegradable resins；
（B）0 ~ 50 part of starch；
（C）5 ~ 25 parts of plasticisers；
（D）0.3 ~ 0.5 part of lubricant；
（E）0.3 ~ 0.5 part of crosslinking agent；
（F）0 ~ 6 portion of reinforcing agent.
2. a kind of excellent starch plastics film of tearing-resistant performance according to claim 1, it is characterised in that by with
The component of lower parts by weight is process：
（A）50 ~ 65 parts of biodegradable resins；
（B）35 ~ 50 parts of starch；
（C）5 ~ 15 parts of plasticisers；
（D）0.3 ~ 0.5 part of lubricant；
（E）0.3 ~ 0.5 part of crosslinking agent；
（F）2 ~ 4 portions of reinforcing agents.
3. a kind of excellent starch plastics film of tearing-resistant performance according to claim 1 or 2, it is characterised in that described
Biodegradable resin be polylactic acid, poly terephthalic acid-adipic acid-butanediol ester, poly terephthalic acid-succinic acid-fourth
Diol ester, poly-succinic-adipic acid-butanediol ester, poly adipate succinic acid ester, polycaprolactone, gathers poly butylene succinate
One or more compositions of hydroxy fatty acid.
4. a kind of excellent starch plastics film of tearing-resistant performance according to claim 1 or 2, it is characterised in that described
Starch be native starch or modified starch one or more compositions, wherein native starch be cornstarch, wheaten starch,
Potato starch, tapioca or other cereal starch, modified starch are that native starch is straight by particle after physical or chemical modification
The starch that diameter becomes smaller.
5. a kind of excellent starch plastics film of tearing-resistant performance according to claim 1 or 2, it is characterised in that described
Plasticiser be ethylene glycol, 1,2- propylene glycol, 1,3- propylene glycol, 1,2- butanediols, 1,3 butylene glycol, 1,4- butanediols, 1,2,
3- glycerine, pentaerythrite, dipentaerythritol, 1,2,3,4,5- pentitols, water, sorbierite and its derivative, formic acid, acetic acid,
Propionic acid, butyric acid, octanoic acid, valeric acid, caproic acid, capric acid, stearic acid, hydroxyacetic acid and its derivative, lactic acid, citric acid
And its one or more compositions of derivative, caffeic acid and its derivative, maleic acid and its derivative.
6. a kind of excellent starch plastics film of tearing-resistant performance according to claim 1 or 2, it is characterised in that described
Lubricant be oleamide, it is erucyl amide, dihydroxypropyl octadecane acid esters, monoglyceride, white oil, polyethylene wax, silicone oil, hard
One or more compositions of resin acid calcium, zinc stearate.
7. a kind of excellent starch plastics film of tearing-resistant performance according to claim 1 or 2, it is characterised in that described
Crosslinking agent be sodium metaphosphate, potassium metaphosphate, calcium metaphosphate, magnesium metaphosphorate, ammonium metaborate, tetraboric acid ammonium, sodium tetraborate, four boron
One or more compositions of sour potassium, potassium metaborate, sodium hypophosphite, potassium hypophosphite, calcium hypophosphite, magnesium hypophosphite.
8. a kind of excellent starch plastics film of tearing-resistant performance according to claim 1 or 2, it is characterised in that described
Reinforcing agent be silica, magnesium sulfate, barium sulfate, calcium sulfate, magnesium carbonate, magnesium hydroxide, magnesium silicate, calcium carbonate, clay, illiteracy
De- soil, hydrotalcite, apatite, galapectite, talcum powder, carbon nanotube, graphite, mica, kaolin, Attagel diatomite, clay,
One or more compositions of bentonite, wollastonite, feldspar, diopside, the tremolite.
9. according to a kind of preparation method of any excellent starch plastics film of tearing-resistant performance of claims 1 or 2,
Steps of the method are：
（1）By biodegradable resin, starch, plasticiser, lubricant, crosslinking agent, reinforcing agent, machinery is mixed in high-speed mixer
It closes uniform；
（2）Using the extruding machine with two screw rods engaging melt blending extruding pelletization in the same direction of higher shear intensity.
10. a kind of preparation method of the excellent starch plastics film of tearing-resistant performance according to 9, it is characterised in that described
The step of（2）In in the same direction extruding machine with two screw rods engaging draw ratio 40 ~ 48,130 ~ 160 DEG C of processing technology temperature, parallel dual-screw
150 ~ 300RPM/min of extruder screw rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711306696.0A CN108559232A (en) | 2017-12-11 | 2017-12-11 | A kind of starch plastics film and preparation method thereof that tearing-resistant performance is excellent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711306696.0A CN108559232A (en) | 2017-12-11 | 2017-12-11 | A kind of starch plastics film and preparation method thereof that tearing-resistant performance is excellent |
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| CN108559232A true CN108559232A (en) | 2018-09-21 |
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| CN109836668A (en) * | 2019-02-23 | 2019-06-04 | 厦门鑫德隆工贸有限公司 | A kind of environment-friendly type bubble bags material and preparation method thereof |
| CN110282246A (en) * | 2019-06-03 | 2019-09-27 | 虎彩印艺股份有限公司 | A kind of heat-resisting Degradable environment protection tea can and its preparation process |
| CN110845830A (en) * | 2019-11-13 | 2020-02-28 | 青岛润兴塑料新材料有限公司 | Starch filled PLA/PBAT full-biodegradable composite material and preparation method thereof |
| CN111019307A (en) * | 2019-11-18 | 2020-04-17 | 福建省邵武市天城绿色包装有限公司 | Environment-friendly degradable multi-component plastic film and preparation method thereof |
| CN111019306A (en) * | 2019-12-30 | 2020-04-17 | 武汉华丽环保科技有限公司 | Enhanced bio-based full-biodegradable plastic film and preparation method thereof |
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| CN114525037A (en) * | 2022-03-17 | 2022-05-24 | 晋江祥谦鞋材有限公司 | Rapidly-degradable environment-friendly plastic film and preparation process thereof |
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| CN109836668A (en) * | 2019-02-23 | 2019-06-04 | 厦门鑫德隆工贸有限公司 | A kind of environment-friendly type bubble bags material and preparation method thereof |
| CN110282246A (en) * | 2019-06-03 | 2019-09-27 | 虎彩印艺股份有限公司 | A kind of heat-resisting Degradable environment protection tea can and its preparation process |
| CN110282246B (en) * | 2019-06-03 | 2020-09-08 | 虎彩印艺股份有限公司 | Heat-resistant degradable environment-friendly tea caddy and preparation process thereof |
| CN114599732A (en) * | 2019-10-21 | 2022-06-07 | 绿鲸环球有限公司 | Renewable resin compositions and articles made therefrom |
| CN110845830B (en) * | 2019-11-13 | 2022-04-26 | 青岛润兴塑料新材料有限公司 | Starch filled PLA/PBAT full-biodegradable composite material and preparation method thereof |
| CN110845830A (en) * | 2019-11-13 | 2020-02-28 | 青岛润兴塑料新材料有限公司 | Starch filled PLA/PBAT full-biodegradable composite material and preparation method thereof |
| CN111019307A (en) * | 2019-11-18 | 2020-04-17 | 福建省邵武市天城绿色包装有限公司 | Environment-friendly degradable multi-component plastic film and preparation method thereof |
| CN111019306A (en) * | 2019-12-30 | 2020-04-17 | 武汉华丽环保科技有限公司 | Enhanced bio-based full-biodegradable plastic film and preparation method thereof |
| CN111234485A (en) * | 2020-01-20 | 2020-06-05 | 陕西科技大学 | Full-nutrition biodegradable agricultural mulching film and preparation method thereof |
| CN111363206A (en) * | 2020-04-21 | 2020-07-03 | 东莞市冠亿新材料科技有限公司 | Full-degradable bio-based material for film and preparation method thereof |
| CN112011096A (en) * | 2020-09-02 | 2020-12-01 | 山东农业大学 | Acidolysis starch composite membrane and preparation method thereof |
| CN112405931A (en) * | 2020-10-26 | 2021-02-26 | 苏州和塑美科技有限公司 | Preparation method of nano-montmorillonite reinforced starch-based biodegradable blown film material, product and application thereof |
| CN112662145A (en) * | 2020-12-21 | 2021-04-16 | 内蒙古农业大学 | Bacteriostatic degradable respiratory membrane with self-contraction performance, preparation method and application |
| CN112778723A (en) * | 2020-12-31 | 2021-05-11 | 武汉华丽环保科技有限公司 | Starch-based degradable desorption tube material and preparation method thereof |
| CN114685951A (en) * | 2020-12-31 | 2022-07-01 | 中国石油化工股份有限公司 | Natural starch-based fully biodegradable polyester and preparation method thereof |
| CN113444346A (en) * | 2021-06-29 | 2021-09-28 | 熊彼特包装科技(苏州)有限公司 | Organic and inorganic filled PBAT complete biodegradable material composition and particles and film prepared from same |
| CN114316524A (en) * | 2021-08-02 | 2022-04-12 | 浙江华发生态科技有限公司 | High-strength PBAT/starch biodegradable masterbatch and preparation method thereof |
| CN114479198A (en) * | 2021-12-13 | 2022-05-13 | 肖华蓉 | Starch-based degradable plastic film and preparation method thereof |
| CN114525037A (en) * | 2022-03-17 | 2022-05-24 | 晋江祥谦鞋材有限公司 | Rapidly-degradable environment-friendly plastic film and preparation process thereof |
| CN114656739A (en) * | 2022-05-11 | 2022-06-24 | 北京海坤之星科技有限公司 | Production process of biodegradable plastic bag |
| CN115197548A (en) * | 2022-06-24 | 2022-10-18 | 杭实科技发展(杭州)有限公司 | Low-melting-point biodegradable agricultural mulching film and hot-melt perforating device |
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