CN107619502A - A kind of biodegradable plastic film - Google Patents
A kind of biodegradable plastic film Download PDFInfo
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- CN107619502A CN107619502A CN201610556156.7A CN201610556156A CN107619502A CN 107619502 A CN107619502 A CN 107619502A CN 201610556156 A CN201610556156 A CN 201610556156A CN 107619502 A CN107619502 A CN 107619502A
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- starch
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Abstract
The invention discloses a kind of biodegradable plastics film, its raw material components and parts by weight are respectively：Polyvinyl alcohol:45 65 parts, starch：35 55 parts, plasticizer glycerine：12 40 parts, PLA：15 30 parts, toluene di-isocyanate(TDI):1 part, antioxidant：0.1 0.3 parts, cellulose：15 30 parts.It is advantageous in that：The present invention can significantly improve the water resistance of plastic sheeting by having the copolymer PLA and cellulose blending of water resistance with some；The present invention is had stronger hydrophily, so being crosslinked therewith using toluene di-isocyanate(TDI), improves the water resistance of plastic sheeting due to containing hydroxyl in the molecule of polyvinyl alcohol and starch；On the one hand the addition of starch can assist the effect of pva degradation, on the other hand can reduce the cost of film.
Description
【Technical field】
The invention belongs to plastic film material field, especially a kind of biodegradable plastics film.
【Background technology】
At present, domestic to have developed the biodegradable packing film prepared using starch, pertinent literature report is more.
For example, the POL biodegradable plastics and its preparation technology of Anlishan Green Environment Science ＆ Technology Co., Ltd., Shenyang's invention【 CN1624034】；
A kind of biodegradable polypropylene carbonate composite material of CNOOC's invention and preparation method thereof【CN101962470】；In
Poly lactic acid nano composite material of a kind of complete biodegradable that section president spring applied chemistry study is invented and preparation method thereof
【CN101735583】；Sichuan Food Fermentative Industry Design Academy is on the development of fruits and vegetables nano preservative film and its in green pepper
Application study in fresh-keeping【The development of the fruits and vegetables nano preservative films such as remaining Wenhua, Li Jiezhi and its application in green pepper is fresh-keeping are ground
Study carefully Sichuan food and fermentation, 2008 (5)：28-31】；Fujian Province No.2 Light Industry Research Institute is on starch/cerium stearate ligand
The research of the degraded LDPE packing films of system【Open grinding for the degraded LDPE packing films of China's collection starch/cerium stearate balanced constant
Study carefully Chinese Plastics, 1999 (2)：60-65】；Machinery of the institute of Hua Zhong Agriculture University on polyethylene/mineral powder composite degradation film
The research of performance and light degradation property【Wang Jinling, Yin Yeping, wait polyethylene/mineral powder composite degradation film mechanical performance and
Printed during light degradation property chemical industry, 2006 (3)：6-10】.
Current starch plastic has gone through three generation products:First generation product with 6%~20% starch and polyolefin
（Such as PE, PP）Blend prepare, belong to starch-filled plastic, leave a porous polymeric that can not be degraded again after starch degradation
Thing and it can not recycle.Its fragment causes more seriously to pollute to soil, so this kind of starch plasticses are referred to as " vacation degraded modeling
Material " or " disintegratable plastics ".Second generation product carries out blending preparation, starch with starch of the content more than 50% and hydrophilic polymer
Stronger physics and chemical action occur between hydrophilic polymer, and exists with continuous phase, this material is shown preferably
Biological degradability, machinability, economy, practicality, Technical comparing is ripe.Third generation product is by thermoplastic starch, day
Right starch, amylose or high amylose starches are not adding polymer, extrusion molding or are molded under high temperature, high pressure and super-humid conditions
The all biological degradation type plastic material arrived, but still it is in conceptual phase at present.
But the plastic package material prepared at present using starch, the size of biodegradability depend in system forming sediment
The height of powder content.The high plastic film material of content of starch, although biodegradability is preferable, thin film material mechanics performance
Shortcoming, and film is barrier bad, during used in packaging fields such as food, medicines, because tight with different degrees of gas permeability
Ghost image rings the quality of packaging.Therefore, development of new biodegradability is good, mechanical property can meet to pack requirement, have
The plastic sheeting of superperformance is paid attention to by countries in the world height.
【The content of the invention】
It is an object of the invention in place of overcome the deficiencies in the prior art, there is provided a kind of biodegradable plastic film, will improve
The shortcomings that difference of PVA film processing at present and strong hydrophily, produced by hot plastic processing method with " biodegradable, environmentally friendly to be
The biodegradable plastic film of objective ".
The object of the present invention is achieved like this：
A kind of biodegradable plastics film, its raw material components and parts by weight are respectively：
Polyvinyl alcohol:45-65 parts, starch：35-55 parts, plasticizer glycerine：12-40 parts, PLA：15-30 parts, toluene two are different
Cyanate:1 part, antioxidant：0.1-0.3 parts, cellulose：15-30 parts.
The preparation method step of above-mentioned biodegradable plastics film is：
(1) polyvinyl alcohol plasticising blending：A certain amount of polyvinyl alcohol is put into homogenizer, the volume of polyvinyl alcohol should account for
The 50-75% of the mixing chamber total measurement (volume) of homogenizer, homogenizer should be converted into homogenizer from low-speed mixer, borrow
Help rub caused by high-speed stirred, polyvinyl alcohol powder can be made to be warming up to 70 DEG C -80 DEG C, by plasticizer between 70 DEG C -80 DEG C
Glycerine slowly and is uniformly added into a manner of measuring, and stirs 30min-120min, and temperature control treats polyethylene at 80 DEG C -110 DEG C
This step is completed after alcohol fully absorbs glycerine.
（2）Starch plasticising blending：A certain amount of starch is put into homogenizer, the volume of starch should account for high-speed stirred
The 50-75% of the mixing chamber total measurement (volume) of machine, homogenizer should be converted into homogenizer from low-speed mixer, by means of at a high speed
Rubbed caused by stirring, starch powder can be made to be warming up to 70 DEG C -80 DEG C, by plasticizer glycerine to measure between 70 DEG C -80 DEG C
Mode is slow and is uniformly added into, and stirs 30min-120min, temperature control is at 80 DEG C -110 DEG C, after starch fully absorbs glycerine
This step is completed.
（3）By step（1）Polyvinyl alcohol, step after obtained plasticising（2）Starch, PLA after obtained plasticising,
Toluene di-isocyanate(TDI), antioxidant, cellulose mix in proportion, add extruding pelletization in double screw extruder, rotating speed
In 25 ± 5rpm, processing temperature：165 DEG C -180 DEG C, the particle manufactured is then melted into blowfilm shaping, blown film via single screw rod
Temperature：185 DEG C -205 DEG C, produce product.
Moreover, the antioxidant is SOLID ORGANIC phosphite antioxidant.
Moreover, the cellulose is cellulose acetate.
The advantages and positive effects of the present invention are：
1st, the present invention can significantly improve plastics by having the copolymer PLA and cellulose blending of water resistance with some
The water resistance of film；
2nd, the present invention has stronger hydrophily, so using first due to containing hydroxyl in the molecule of polyvinyl alcohol and starch
Phenylene diisocyanate is crosslinked therewith, improves the water resistance of plastic sheeting.
On the one hand the addition of starch can assist the effect of pva degradation, on the other hand can reduce film into
This.
【Embodiment】Embodiments of the invention are described in detail below；It should be noted that the present embodiment is narrative,
It is not limited, it is impossible to which protection scope of the present invention is limited with this.
Embodiment 1：
A kind of biodegradable plastics film, its preparation method comprise the following steps：
Weigh polyvinyl alcohol:45Kg, starch：55 Kg, plasticizer glycerine：40kg, PLA：15 Kg, toluene di-isocyanate(TDI):
1 Kg, antioxidant：0.1 Kg, cellulose：30 Kg.
According to step:
(1) polyvinyl alcohol plasticising blending：45Kg polyvinyl alcohol is put into homogenizer, homogenizer should be from stirring at low speed
Machine is converted into homogenizer, by means of friction caused by high-speed stirred, polyvinyl alcohol powder can be made to be warming up to 70 DEG C -80 DEG C,
At 75 DEG C by the Kg of plasticizer glycerine 20 in a manner of measuring slowly and be uniformly added into, stir 30min, temperature control at 80 DEG C,
This step is completed after polyvinyl alcohol fully absorbs glycerine.
(2) starch plasticising blending：Will：55 Kg starch are put into homogenizer, and homogenizer should be from low-speed mixer
Homogenizer is converted into, by means of friction caused by high-speed stirred, starch powder can be made to be warming up to 70 DEG C -80 DEG C, at 75 DEG C
Between the Kg of plasticizer glycerine 20 slowly and is uniformly added into a manner of measuring, stir 30min, temperature control treats starch at 80 DEG C
This step is completed after fully absorbing glycerine.
(3) by step（1）Polyvinyl alcohol, step after obtained plasticising（2）Starch, PLA 15 after obtained plasticising
Kg, the Kg of toluene di-isocyanate(TDI) 1, the Kg of antioxidant 0.1, the Kg of cellulose 30 are mixed, and are added in double screw extruder and are squeezed
Go out to be granulated, rotating speed is in 25 ± 5rpm, processing temperature：165 DEG C, then by the particle manufactured via single screw rod melt blown film into
Type, blown film temperature：185 DEG C, produce product.
Embodiment 2：
A kind of biodegradable plastics film, its preparation method comprise the following steps：
Weigh polyvinyl alcohol:50Kg, starch：50 Kg, plasticizer glycerine：40kg, PLA：20 Kg, toluene di-isocyanate(TDI):
1 Kg, antioxidant：0.2 Kg, cellulose：20 Kg.
According to step:
(1) polyvinyl alcohol plasticising blending：50Kg polyvinyl alcohol is put into homogenizer, homogenizer should be from stirring at low speed
Machine is converted into homogenizer, by means of friction caused by high-speed stirred, polyvinyl alcohol powder can be made to be warming up to 70 DEG C -80 DEG C,
At 75 DEG C by the Kg of plasticizer glycerine 20 in a manner of measuring slowly and be uniformly added into, stir 60min, temperature control at 90 DEG C,
This step is completed after polyvinyl alcohol fully absorbs glycerine.
(2) starch plasticising blending：Will：50 Kg starch are put into homogenizer, and homogenizer should be from low-speed mixer
Homogenizer is converted into, by means of friction caused by high-speed stirred, starch powder can be made to be warming up to 70 DEG C -80 DEG C, at 75 DEG C
Between the Kg of plasticizer glycerine 20 slowly and is uniformly added into a manner of measuring, stir 60min, temperature control treats starch at 90 DEG C
This step is completed after fully absorbing glycerine.
(3) by step（1）Polyvinyl alcohol, step after obtained plasticising（2）Starch, PLA 20 after obtained plasticising
Kg, the Kg of toluene di-isocyanate(TDI) 1, the Kg of antioxidant 0.2, the Kg of cellulose 20 are mixed, and are added in double screw extruder and are squeezed
Go out to be granulated, rotating speed is in 25 ± 5rpm, processing temperature：170 DEG C, then by the particle manufactured via single screw rod melt blown film into
Type, blown film temperature：190 DEG C, produce product.
Embodiment 3：
A kind of biodegradable plastics film, its preparation method comprise the following steps：
Weigh polyvinyl alcohol:55Kg, starch：45 Kg, plasticizer glycerine：30kg, PLA：25 Kg, toluene di-isocyanate(TDI):
1 Kg, antioxidant：0.3 Kg, cellulose：15 Kg.
According to step:
(1) polyvinyl alcohol plasticising blending：55Kg polyvinyl alcohol is put into homogenizer, homogenizer should be from stirring at low speed
Machine is converted into homogenizer, by means of friction caused by high-speed stirred, polyvinyl alcohol powder can be made to be warming up to 70 DEG C -80 DEG C,
The Kg of plasticizer glycerine 15 slowly and is uniformly added into a manner of measuring at 80 DEG C, stirs 90min, temperature control is 100
DEG C, this step is completed after polyvinyl alcohol fully absorbs glycerine.
(2) starch plasticising blending：Will：45 Kg starch are put into homogenizer, and homogenizer should be from low-speed mixer
Homogenizer is converted into, by means of friction caused by high-speed stirred, starch powder can be made to be warming up to 70 DEG C -80 DEG C, at 80 DEG C
Between the Kg of plasticizer glycerine 15 slowly and is uniformly added into a manner of measuring, stir 90min, temperature control waits to form sediment at 100 DEG C
This step is completed after powder fully absorbs glycerine.
(3) by step（1）Polyvinyl alcohol, step after obtained plasticising（2）Starch, PLA 25 after obtained plasticising
Kg, the Kg of toluene di-isocyanate(TDI) 1, the Kg of antioxidant 0.3, the Kg of cellulose 15 are mixed, and are added in double screw extruder and are squeezed
Go out to be granulated, rotating speed is in 25 ± 5rpm, processing temperature：175 DEG C, then by the particle manufactured via single screw rod melt blown film into
Type, blown film temperature：195 DEG C, produce product.
Embodiment 4：
A kind of biodegradable plastics film, its preparation method comprise the following steps：
Weigh polyvinyl alcohol:65Kg, starch：35 Kg, plasticizer glycerine：20kg, PLA：30 Kg, toluene di-isocyanate(TDI):
1 Kg, antioxidant：0.3 Kg, cellulose：15 Kg.
According to step:
(1) polyvinyl alcohol plasticising blending：65Kg polyvinyl alcohol is put into homogenizer, homogenizer should be from stirring at low speed
Machine is converted into homogenizer, by means of friction caused by high-speed stirred, polyvinyl alcohol powder can be made to be warming up to 70 DEG C -80 DEG C,
The Kg of plasticizer glycerine 10 slowly and is uniformly added into a manner of measuring at 80 DEG C, stirs 120min, temperature control is 110
DEG C, this step is completed after polyvinyl alcohol fully absorbs glycerine.
(2) starch plasticising blending：Will：35 Kg starch are put into homogenizer, and homogenizer should be from low-speed mixer
Homogenizer is converted into, by means of friction caused by high-speed stirred, starch powder can be made to be warming up to 70 DEG C -80 DEG C, at 80 DEG C
Between the Kg of plasticizer glycerine 10 slowly and is uniformly added into a manner of measuring, stir 120min, temperature control waits to form sediment at 110 DEG C
This step is completed after powder fully absorbs glycerine.
(3) by step（1）Polyvinyl alcohol, step after obtained plasticising（2）Starch, PLA 30 after obtained plasticising
Kg, the Kg of toluene di-isocyanate(TDI) 1, the Kg of antioxidant 0.3, cellulose 15Kg are mixed, and are added in double screw extruder and are squeezed
Go out to be granulated, rotating speed is in 25 ± 5rpm, processing temperature：180 DEG C, then by the particle manufactured via single screw rod melt blown film into
Type, blown film temperature：205 DEG C, produce product.
Claims (1)
- A kind of 1. biodegradable plastics film, it is characterised in that：Its raw material components and parts by weight are respectively：Polyvinyl alcohol:45-65 parts, starch：35-55 parts, plasticizer glycerine：12-40 parts, PLA：15-30 parts, toluene two are different Cyanate:1 part, antioxidant：0.1-0.3 parts, cellulose：15-30 parts;The preparation method step of above-mentioned biodegradable plastics film is：(1) polyvinyl alcohol plasticising blending：A certain amount of polyvinyl alcohol is put into homogenizer, the volume of polyvinyl alcohol should account for The 50-75% of the mixing chamber total measurement (volume) of homogenizer, homogenizer should be converted into homogenizer from low-speed mixer, borrow Help rub caused by high-speed stirred, polyvinyl alcohol powder can be made to be warming up to 70 DEG C -80 DEG C, by plasticizer between 70 DEG C -80 DEG C Glycerine slowly and is uniformly added into a manner of measuring, and stirs 30min-120min, and temperature control treats polyethylene at 80 DEG C -110 DEG C This step is completed after alcohol fully absorbs glycerine;（2）Starch plasticising blending：A certain amount of starch is put into homogenizer, the volume of starch should account for homogenizer The 50-75% of mixing chamber total measurement (volume), homogenizer should be converted into homogenizer from low-speed mixer, by means of high-speed stirred Caused friction, starch powder can be made to be warming up to 70 DEG C -80 DEG C, between 70 DEG C -80 DEG C by plasticizer glycerine in a manner of measuring Slowly and it is uniformly added into, stirs 30min-120min, temperature control is at 80 DEG C -110 DEG C, and this is walked after starch fully absorbs glycerine It is rapid to complete;（3）By step（1）Polyvinyl alcohol, step after obtained plasticising（2）Starch, PLA, toluene after obtained plasticising Diisocyanate, antioxidant, cellulose mix in proportion, add extruding pelletization in double screw extruder, rotating speed is 25 ± 5rpm, processing temperature：165 DEG C -180 DEG C, the particle manufactured is then melted into blowfilm shaping, blown film temperature via single screw rod Degree：185 DEG C -205 DEG C, produce product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610556156.7A CN107619502A (en) | 2016-07-15 | 2016-07-15 | A kind of biodegradable plastic film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610556156.7A CN107619502A (en) | 2016-07-15 | 2016-07-15 | A kind of biodegradable plastic film |
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| CN107619502A true CN107619502A (en) | 2018-01-23 |
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| CN201610556156.7A Withdrawn CN107619502A (en) | 2016-07-15 | 2016-07-15 | A kind of biodegradable plastic film |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111635564A (en) * | 2020-05-28 | 2020-09-08 | 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 |
| CN114507405A (en) * | 2021-09-02 | 2022-05-17 | 广东泰塑新材料科技有限公司 | Flame-retardant polyvinyl alcohol composite film and application thereof |
| CN114573933A (en) * | 2022-03-31 | 2022-06-03 | 郑州轻工业大学 | Polyvinyl alcohol film and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05320418A (en) * | 1991-04-19 | 1993-12-03 | Kanebo Ltd | Biodegradable plastic composition |
| CN101240086A (en) * | 2008-03-14 | 2008-08-13 | 上海悦仕生物材料有限公司 | Total-biodegradation plastic film and preparation method thereof |
| CN104892999A (en) * | 2015-05-22 | 2015-09-09 | 铜陵方正塑业科技有限公司 | High-water-resistance full-degradable plastic film and preparation method thereof |
| CN105440606A (en) * | 2014-09-02 | 2016-03-30 | 允友成(宿迁)复合新材料有限公司 | Preparation method of fully biodegradable starch/polylactic acid base resin |
-
2016
- 2016-07-15 CN CN201610556156.7A patent/CN107619502A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05320418A (en) * | 1991-04-19 | 1993-12-03 | Kanebo Ltd | Biodegradable plastic composition |
| CN101240086A (en) * | 2008-03-14 | 2008-08-13 | 上海悦仕生物材料有限公司 | Total-biodegradation plastic film and preparation method thereof |
| CN105440606A (en) * | 2014-09-02 | 2016-03-30 | 允友成(宿迁)复合新材料有限公司 | Preparation method of fully biodegradable starch/polylactic acid base resin |
| CN104892999A (en) * | 2015-05-22 | 2015-09-09 | 铜陵方正塑业科技有限公司 | High-water-resistance full-degradable plastic film and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111635564A (en) * | 2020-05-28 | 2020-09-08 | 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 |
| CN114507405A (en) * | 2021-09-02 | 2022-05-17 | 广东泰塑新材料科技有限公司 | Flame-retardant polyvinyl alcohol composite film and application thereof |
| CN114573933A (en) * | 2022-03-31 | 2022-06-03 | 郑州轻工业大学 | Polyvinyl alcohol film and preparation method thereof |
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