CN108912625A - A kind of biodegradable plastics and preparation method thereof - Google Patents
A kind of biodegradable plastics and preparation method thereof Download PDFInfo
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- CN108912625A CN108912625A CN201810935828.4A CN201810935828A CN108912625A CN 108912625 A CN108912625 A CN 108912625A CN 201810935828 A CN201810935828 A CN 201810935828A CN 108912625 A CN108912625 A CN 108912625A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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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
- 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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- 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
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
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- Biological Depolymerization Polymers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of biodegradable plastics and preparation method thereof, formula is made of by weight the following raw material：10-20 parts of polylactic acid, polyadipate/30-50 parts of butylene terephthalate, 10-20 parts of maleic anhydride, 3-5 parts of 2.5- dimethyl -2.5- bis(t-butylperoxy) hexane, 2-4 parts of ethylene methyl acrylate grafted methacrylic acid shrink, 3-5 parts of glyceride, 20-40 parts of modified starch, 2-4 parts of functional aid.Plastics mechanical strength made from inventive formulation is big, processing performance is excellent, and carbon dioxide and water, green non-pollution can be generated under the action of microorganism or acid, alkali after discarded.
Description
Technical field
The present invention relates to a kind of degradation plastic, specifically a kind of biodegradable plastics and preparation method thereof.
Background technique
Biodegradable plastic refers to the effect of a kind of such as bacterium, mould (fungi) and algae of the microorganism as existing for nature
And cause the plastics of degradation.Ideal biodegradable plastic be it is a kind of with excellent service performance, it is discarded after can be micro- by environment
The biological high molecular material for decomposing completely, finally being become a component part of Carbon cycle in nature by inorganization.It is raw
Object degradative plastics can be divided into complete biodegradable plastics and destructive two kinds of biodegradable plastic again.Destructive biodegradable plastic
Current mainly includes starch conversion or polythene PE, polypropylene PP, polyvinylchloride, the polystyrene PS of filling etc..
Complete biodegradable plastics are mainly passed through by natural polymer (such as starch, cellulose, chitin) or agricultural and sideline product
There is the macromolecule of biological degradability to be made for microbial fermentation or synthesis, such as thermoplastic starch plastic, aliphatic polyester, PLA, shallow lake
Powder/polyvinyl alcohol etc. belongs to this kind of plastics.Biodegradable plastic in the prior art based on the natural materials such as starch is current
It mainly include following several prods：PLA (PLA, Polylactide), poly butylene succinate (PBS, Poly Butylene-
Succinate), Ju Hydroxyalkyl yl carboxylic acid ester (Polyhydroxyalkanoates PHA), (PHBHHX is by 3- to polyhydroxyalkanoates
The copolyesters of hydroxybutyric acid and 3- hydroxycaproic acid；It is the Wholly-degradable high molecular material by Microbe synthesis, material property
It is related with the content of 3- hydroxycaproic acid (3HHx) in the copolymer), starch plastic, bioengineering plastics, biological general-purpose plastics it is (poly-
Alkene and polyvinyl chloride).
In China, with the intensification understood degradative plastics, it has been fully recognized that this material and its industry can to China
The strategy function of sustainable development.The popularization and application of biodegradable plastics has been enjoyed popular confidence.Fully biodegradable in 2014
The dosage of plastics reaches 1,000,000 tons；Although little compared with conventional plastic dosage, for a kind of material, its usage amount
Or it is sizable, and growth momentum is swift and violent.In addition to considering its using effect, degradation rate is also adjoint for actual use
The problem of, usual biodegradable plastic considers the treating method of compost, if degradation rate is slow：First is that land occupation, rubbish are filled out
It is long to bury the period；Second is that influencing the growth of coming year crops.
Summary of the invention
The present invention provides a kind of biodegradable plastics and preparation method thereof, to solve the above technical problems.
A kind of biodegradable plastics is made of by weight the following raw material：10-20 parts of polylactic acid, polyadipate/to benzene
30-50 parts of dioctyl phthalate fourth diester, 10-20 parts of maleic anhydride, 3-5 parts of 2.5- dimethyl -2.5- bis(t-butylperoxy) hexane,
2-4 parts of ethylene methyl acrylate grafted methacrylic acid shrink, 3-5 parts of glyceride, 20-40 parts of modified starch, functional aid
2-4 parts；
The functional aid includes stabilizer, toughener, antioxidant, catalyst, and the mass ratio of each ingredient is 2:3:
1:1。
Preferably, the structural formula of the polyadipate/butylene terephthalate is：
Preferably, the structural formula of the glyceride is：
Preferably, the modified starch is using modified wheat starch or modified potato starch or modified sweet potato starch.
Preferably, the catalyst is sodium hypophosphite.
Preferably, the antioxidant is trisnonyl phenyl phosphite and trioctyl trimellitate (TOTM) according to molar ratio 1:1 group
At mixture.
A kind of preparation method of biodegradable plastics, includes the following steps：
(1) polylactic acid, polyadipate/butylene terephthalate, maleic anhydride, 2.5- diformazan are accurately weighed by formula
Base -2.5- bis(t-butylperoxy) hexane, the shrink of ethylene methyl acrylate grafted methacrylic acid, glyceride, modified starch,
Functional aid is spare；
(2) polylactic acid is placed in 80 oven drying 5h first, maleic anhydride and 2.5- bis- is added into polylactic acid after cooling
Methyl -2.5- bis(t-butylperoxy) hexane is uniformly mixed, and passes through double screw extruder extruding pelletization, double screw extruder one
100 DEG C, 120 DEG C, 150 DEG C, 160 DEG C, 180 DEG C, 180 DEG C, 175 DEG C, the master of double screw extruder are set to seven area's temperature
Machine revolving speed is set as 15Hz, and it is spare that obtained particle is placed in 80 DEG C of oven dryings；
(3) particle and modified starch, polyadipate/butylene terephthalate, ethylene, propylene for again obtaining step (2)
Sour methyl esters grafted methacrylic acid shrink, glyceride, functional aid are homogenously mixed together to obtain aggregate sample body, and stand
3h, then aggregate sample body is placed at 70 DEG C of dry 4h in electric heating constant-temperature blowing drying box；
(4) it by the aggregate sample body investment double screw extruder of drying, is kneaded and is squeezed out, set double screw extruder
One to seven area's temperature are respectively 110 DEG C, 135 DEG C, 155 DEG C, 170 DEG C, 170 DEG C, 170 DEG C, 165 DEG C, the master of double screw extruder
Machine revolving speed is set as 20Hz, and rate of feeding is set as 5Hz；
(5) the material item that the die portion through double screw extruder squeezes out is placed in 70 DEG C of oven drying 5h, then through air-cooled,
Biodegradable plastic grain is made with pelleter.
Preferably, the structural formula of particle obtained in the step (2) is:
Preferably, the structural formula of aggregate sample body obtained in the step (3) is：
Beneficial effects of the present invention：
The beneficial effects of the invention are as follows：Plastics mechanical strength made from inventive formulation is big, processing performance is excellent, after discarding
Carbon dioxide and water, green non-pollution can be generated under the action of microorganism or acid, alkali.First is grafted by ethylene methyl acrylate
Base acrylic acid shrinks, glyceride improves the interface compatibility between polylactic acid and polyadipate/butylene terephthalate, passes through
Sodium hypophosphite catalyst polylactic acid and maleic anhydride, 2.5- dimethyl -2.5- bis(t-butylperoxy) are mixed to prepare
Esterification increases the active force between polylactic acid and modified starch between particle and modified starch, to produce has both polylactic acid intensity
High, polyadipate/butylene terephthalate good toughness biodegradable plastic.
Specific embodiment
The embodiment of the present invention is described in detail below, but what the present invention can be defined by the claims and cover
Multitude of different ways is implemented.
Below by way of specific embodiment, the present invention will be described in detail.
Embodiment 1
A kind of preparation method of biodegradable plastics, includes the following steps：
(1) 10 parts of polylactic acid, 30 parts of polyadipate/butylene terephthalate, maleic anhydride 10 are accurately weighed by formula
Part, 3 parts of 2.5- dimethyl -2.5- bis(t-butylperoxy) hexane, ethylene methyl acrylate grafted methacrylic acid shrink 2
Part, 3 parts of glyceride, 20 parts of modified starch, 2 parts of functional aid it is spare；
Wherein, above-mentioned functional aid includes stabilizer, toughener, antioxidant, catalyst, and the mass ratio of each ingredient is
2:3:1:1；
The structural formula of above-mentioned polyadipate/butylene terephthalate is：
The structural formula of above-mentioned glyceride is：
Above-mentioned modified starch is using modified wheat starch or modified potato starch or modified sweet potato starch；
Above-mentioned catalyst is sodium hypophosphite；
Above-mentioned antioxidant is trisnonyl phenyl phosphite and trioctyl trimellitate (TOTM) according to molar ratio 1:The mixing of 1 composition
Object；
(2) polylactic acid is placed in 80 oven drying 5h first, maleic anhydride and 2.5- bis- is added into polylactic acid after cooling
Methyl -2.5- bis(t-butylperoxy) hexane is uniformly mixed, and passes through double screw extruder extruding pelletization, double screw extruder one
100 DEG C, 120 DEG C, 150 DEG C, 160 DEG C, 180 DEG C, 180 DEG C, 175 DEG C, the master of double screw extruder are set to seven area's temperature
Machine revolving speed is set as 15Hz, and it is spare that obtained particle is placed in 80 DEG C of oven dryings；
(3) particle and modified starch, polyadipate/butylene terephthalate, ethylene, propylene for again obtaining step (2)
Sour methyl esters grafted methacrylic acid shrink, glyceride, stabilizer, toughener, antioxidant, catalyst are homogenously mixed together
To aggregate sample body, and 3h is stood, then aggregate sample body is placed at 70 DEG C of dry 4h in electric heating constant-temperature blowing drying box；
(4) it by the aggregate sample body investment double screw extruder of drying, is kneaded and is squeezed out, set double screw extruder
One to seven area's temperature are respectively 110 DEG C, 135 DEG C, 155 DEG C, 170 DEG C, 170 DEG C, 170 DEG C, 165 DEG C, the master of double screw extruder
Machine revolving speed is set as 20Hz, and rate of feeding is set as 5Hz；
(5) the material item that the die portion through double screw extruder squeezes out is placed in 70 DEG C of oven drying 5h, then through air-cooled,
Biodegradable plastic grain is made with pelleter.
The structural formula of obtained particle is in above-mentioned steps (2):
The structural formula of obtained aggregate sample body is in above-mentioned steps (3)：
Embodiment 2
A kind of preparation method of biodegradable plastics, includes the following steps：
(1) 15 parts of polylactic acid, 40 parts of polyadipate/butylene terephthalate, maleic anhydride 15 are accurately weighed by formula
Part, 4 parts of 2.5- dimethyl -2.5- bis(t-butylperoxy) hexane, ethylene methyl acrylate grafted methacrylic acid shrink 3
Part, 4 parts of glyceride, 30 parts of modified starch, 3 parts of functional aid it is spare,
Wherein, above-mentioned functional aid includes stabilizer, toughener, antioxidant, catalyst, and the mass ratio of each ingredient is
2:3:1:1；
The structural formula of above-mentioned polyadipate/butylene terephthalate is：
The structural formula of above-mentioned glyceride is：
Above-mentioned modified starch is using modified wheat starch or modified potato starch or modified sweet potato starch；
Above-mentioned catalyst is sodium hypophosphite；
Above-mentioned antioxidant is trisnonyl phenyl phosphite and trioctyl trimellitate (TOTM) according to molar ratio 1:The mixing of 1 composition
Object；
(2) polylactic acid is placed in 80 oven drying 5h first, maleic anhydride and 2.5- bis- is added into polylactic acid after cooling
Methyl -2.5- bis(t-butylperoxy) hexane is uniformly mixed, and passes through double screw extruder extruding pelletization, double screw extruder one
100 DEG C, 120 DEG C, 150 DEG C, 160 DEG C, 180 DEG C, 180 DEG C, 175 DEG C, the master of double screw extruder are set to seven area's temperature
Machine revolving speed is set as 15Hz, and it is spare that obtained particle is placed in 80 DEG C of oven dryings；
(3) particle and modified starch, polyadipate/butylene terephthalate, ethylene, propylene for again obtaining step (2)
Sour methyl esters grafted methacrylic acid shrink, glyceride, stabilizer, toughener, antioxidant, catalyst are homogenously mixed together
To aggregate sample body, and 3h is stood, then aggregate sample body is placed at 70 DEG C of dry 4h in electric heating constant-temperature blowing drying box；
(4) it by the aggregate sample body investment double screw extruder of drying, is kneaded and is squeezed out, set double screw extruder
One to seven area's temperature are respectively 110 DEG C, 135 DEG C, 155 DEG C, 170 DEG C, 170 DEG C, 170 DEG C, 165 DEG C, the master of double screw extruder
Machine revolving speed is set as 20Hz, and rate of feeding is set as 5Hz；
(5) the material item that the die portion through double screw extruder squeezes out is placed in 70 DEG C of oven drying 5h, then through air-cooled,
Biodegradable plastic grain is made with pelleter.
The structural formula of obtained particle is in above-mentioned steps (2):
The structural formula of obtained aggregate sample body is in above-mentioned steps (3)：
Embodiment 3
A kind of preparation method of biodegradable plastics, includes the following steps：
(1) 20 parts of polylactic acid, 40 parts of polyadipate/butylene terephthalate, maleic anhydride 15 are accurately weighed by formula
Part, 4 parts of 2.5- dimethyl -2.5- bis(t-butylperoxy) hexane, ethylene methyl acrylate grafted methacrylic acid shrink 3
Part, 4 parts of glyceride, 30 parts of modified starch, 3 parts of functional aid it is spare,
Wherein, above-mentioned functional aid includes stabilizer, toughener, antioxidant, catalyst, and the mass ratio of each ingredient is
2:3:1:1；
The structural formula of above-mentioned polyadipate/butylene terephthalate is：
The structural formula of above-mentioned glyceride is：
Above-mentioned modified starch is using modified wheat starch or modified potato starch or modified sweet potato starch；
Above-mentioned catalyst is sodium hypophosphite；
Above-mentioned antioxidant is trisnonyl phenyl phosphite and trioctyl trimellitate (TOTM) according to molar ratio 1:The mixing of 1 composition
Object；
(2) polylactic acid is placed in 80 oven drying 5h first, maleic anhydride and 2.5- bis- is added into polylactic acid after cooling
Methyl -2.5- bis(t-butylperoxy) hexane is uniformly mixed, and passes through double screw extruder extruding pelletization, double screw extruder one
100 DEG C, 120 DEG C, 150 DEG C, 160 DEG C, 180 DEG C, 180 DEG C, 175 DEG C, the master of double screw extruder are set to seven area's temperature
Machine revolving speed is set as 15Hz, and it is spare that obtained particle is placed in 80 DEG C of oven dryings；
(3) particle and modified starch, polyadipate/butylene terephthalate, ethylene, propylene for again obtaining step (2)
Sour methyl esters grafted methacrylic acid shrink, glyceride, stabilizer, toughener, antioxidant, catalyst are homogenously mixed together
To aggregate sample body, and 3h is stood, then aggregate sample body is placed at 70 DEG C of dry 4h in electric heating constant-temperature blowing drying box；
(4) it by the aggregate sample body investment double screw extruder of drying, is kneaded and is squeezed out, set double screw extruder
One to seven area's temperature are respectively 110 DEG C, 135 DEG C, 155 DEG C, 170 DEG C, 170 DEG C, 170 DEG C, 165 DEG C, the master of double screw extruder
Machine revolving speed is set as 20Hz, and rate of feeding is set as 5Hz；
(5) the material item that the die portion through double screw extruder squeezes out is placed in 70 DEG C of oven drying 5h, then through air-cooled,
Biodegradable plastic grain is made with pelleter.
The structural formula of obtained particle is in above-mentioned steps (2):
The structural formula of obtained aggregate sample body is in above-mentioned steps (3)：
The embodiments of the present invention described above are not intended to limit the scope of the present invention, any in the present invention
Spirit and principle within made modifications, equivalent substitutions and improvements etc., should be included in claim protection model of the invention
Within enclosing.
Claims (9)
1. a kind of biodegradable plastics, which is characterized in that be made of by weight the following raw material：10-20 parts of polylactic acid gathers oneself
Diacid/30-50 parts of butylene terephthalate, 10-20 parts of maleic anhydride, 2.5- dimethyl -2.5- bis(t-butylperoxy)
3-5 parts of hexane, 2-4 parts of ethylene methyl acrylate grafted methacrylic acid shrink, 3-5 parts of glyceride, 20-40 parts of modified starch,
2-4 parts of functional aid；
The functional aid includes stabilizer, toughener, antioxidant, catalyst, and the mass ratio of each ingredient is 2:3:1:1.
2. biodegradable plastics according to claim 1, which is characterized in that the polyadipate/terephthalic acid (TPA) fourth
The structural formula of diester is：
3. biodegradable plastics according to claim 1, which is characterized in that the structural formula of the glyceride is：
4. biodegradable plastics according to claim 1, which is characterized in that the modified starch is formed sediment using modified wheat
Powder or modified potato starch or modified sweet potato starch.
5. biodegradable plastics according to claim 1, which is characterized in that the catalyst is sodium hypophosphite.
6. biodegradable plastics according to claim 1, which is characterized in that the antioxidant is three nonyl of phosphorous acid
Phenyl ester and trioctyl trimellitate (TOTM) are according to molar ratio 1:The mixture of 1 composition.
7. a kind of preparation method of biodegradable plastics, which is characterized in that include the following steps：
(1) polylactic acid, polyadipate/butylene terephthalate, maleic anhydride, 2.5- dimethyl-are accurately weighed by formula
2.5- bis(t-butylperoxy) hexane, the shrink of ethylene methyl acrylate grafted methacrylic acid, glyceride, modified starch, function
Energy property auxiliary agent is spare；
(2) polylactic acid is placed in 80 oven drying 5h first, maleic anhydride and 2.5- dimethyl-is added into polylactic acid after cooling
2.5- bis(t-butylperoxy) hexane is uniformly mixed, and passes through double screw extruder extruding pelletization, double screw extruder one to seven
Area's temperature is set to 100 DEG C, 120 DEG C, 150 DEG C, 160 DEG C, 180 DEG C, 180 DEG C, 175 DEG C, and the host of double screw extruder turns
Speed is set as 15Hz, and it is spare that obtained particle is placed in 80 DEG C of oven dryings；
(3) particle and modified starch, polyadipate/butylene terephthalate, ethylene acrylic first again obtained step (2)
The shrink of ester grafted methacrylic acid, glyceride, functional aid are homogenously mixed together to obtain aggregate sample body, and stand 3h, then
Aggregate sample body is placed at 70 DEG C of dry 4h in electric heating constant-temperature blowing drying box；
(4) it by the aggregate sample body investment double screw extruder of drying, is kneaded and is squeezed out, setting double screw extruder one arrives
Seven area's temperature are respectively 110 DEG C, 135 DEG C, 155 DEG C, 170 DEG C, 170 DEG C, 170 DEG C, 165 DEG C, and the host of double screw extruder turns
Speed is set as 20Hz, and rate of feeding is set as 5Hz；
(5) the material item that die portion through double screw extruder squeezes out is placed in 70 DEG C of oven drying 5h, then through air-cooled, with cutting
Grain mechanism obtains biodegradable plastic grain.
8. a kind of preparation method of biodegradable plastics according to claim 7, which is characterized in that the step (2)
In the structural formula of obtained particle be:
9. a kind of preparation method of biodegradable plastics according to claim 8, which is characterized in that the step (3)
In the structural formula of obtained aggregate sample body be：
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| CN201810935828.4A CN108912625A (en) | 2018-08-16 | 2018-08-16 | A kind of biodegradable plastics and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110964298A (en) * | 2019-12-20 | 2020-04-07 | 深圳市祥鸿辉科技有限公司 | Biodegradable modified material and preparation method thereof |
| CN113150519A (en) * | 2021-04-26 | 2021-07-23 | 深圳市华潽新材料有限公司 | Full-biodegradable material with controllable period |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103992517A (en) * | 2014-06-10 | 2014-08-20 | 华东理工大学 | Continuously-produced full-degradable starch-based plastic alloy and preparation method thereof |
| CN105086395A (en) * | 2015-09-02 | 2015-11-25 | 深圳王子新材料股份有限公司 | Biodegradable composite and preparation method thereof |
-
2018
- 2018-08-16 CN CN201810935828.4A patent/CN108912625A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103992517A (en) * | 2014-06-10 | 2014-08-20 | 华东理工大学 | Continuously-produced full-degradable starch-based plastic alloy and preparation method thereof |
| CN105086395A (en) * | 2015-09-02 | 2015-11-25 | 深圳王子新材料股份有限公司 | Biodegradable composite and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110964298A (en) * | 2019-12-20 | 2020-04-07 | 深圳市祥鸿辉科技有限公司 | Biodegradable modified material and preparation method thereof |
| CN113150519A (en) * | 2021-04-26 | 2021-07-23 | 深圳市华潽新材料有限公司 | Full-biodegradable material with controllable period |
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