CN111334060A - Preparation method of bamboo fiber polylactic acid composite plastic capable of being rapidly refined and degraded - Google Patents
Preparation method of bamboo fiber polylactic acid composite plastic capable of being rapidly refined and degraded Download PDFInfo
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- CN111334060A CN111334060A CN202010271609.8A CN202010271609A CN111334060A CN 111334060 A CN111334060 A CN 111334060A CN 202010271609 A CN202010271609 A CN 202010271609A CN 111334060 A CN111334060 A CN 111334060A
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- polylactic acid
- bamboo fiber
- composite plastic
- mixing
- granulating
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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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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
- A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
- A01G13/0256—Ground coverings
- A01G13/0268—Mats or sheets, e.g. nets or fabrics
- A01G13/0275—Films
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/14—Greenhouses
- A01G9/1438—Covering materials therefor; Materials for protective coverings used for soil and plants, e.g. films, canopies, tunnels or cloches
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
-
- 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
- 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
-
- 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
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
- C08J2491/06—Waxes
-
- 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
- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
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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
- C08K5/11—Esters; Ether-esters of acyclic polycarboxylic acids
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Abstract
The invention discloses a preparation method of a bamboo fiber polylactic acid composite plastic capable of being rapidly refined and degraded, which comprises a formula and a preparation process. The invention adopts bamboo fiber powder and polylactic acid as a formula, and prepares bamboo fiber polylactic acid composite plastic, called composite plastic for short, for producing degradable tableware by a preparation process of mixing and granulating; the technical scheme is that the bamboo fiber powder has the mechanical strength higher than that of other plant fibers, and the bamboo fiber and the polylactic acid are easily decomposed quickly under the actions of enzymolysis of microorganisms, oxidation of air, hydrolysis of rainwater and photolysis of the sun in the natural environment, so that the bamboo fiber and the polylactic acid are quickly refined, decomposed and blended into soil in the nature, and the pollution to the natural environment is reduced.
Description
Technical Field
The invention relates to a thermoplastic composite plastic, in particular to a preparation method of a bamboo fiber polylactic acid composite plastic for rapid refining and degradation for manufacturing plastic degradable tableware.
Background
Description of the drawings: in order to solve the problem that the disposable plastic tableware is difficult to degrade after being used and causes long-term pollution to the environment, the state requires to produce and use the degradable tableware; the degradable tableware is disposable plastic tableware such as food boxes, knife, fork, spoons and bowls and the like made of starch modified plastics, and after the degradable tableware is used, the degradable tableware can be degraded and weathered under the action of microorganisms, air, water and sunlight in the natural environment; the starch modified plastic is prepared by adding edible starch into polyethylene PE resin or polypropylene PP resin for modification to obtain starch modified polyethylene PE and starch modified polypropylene PP plastic materials; the degradation rate of the degradable tableware and the weathering granularity are determined by the starch content in the starch modified plastic, the starch content is high, the degradation rate is high, and the weathering granularity is small; on the contrary, the starch content is low, the degradation rate is slow, and the weathering granularity is large; the manufacturing, forming and using strength of the degradable tableware is also limited by the starch content in the starch modified plastic, the starch content is high, the manufacturing and forming are difficult, the strength is low, the crushing is easy, and the using strength is poor; on the contrary, the starch content is low, the molding is easy, the strength is high, and the use strength is good; therefore, in order to ensure that the degradable tableware is easy to manufacture, mold and use strength, the starch modified plastic in the prior art has a small proportion of added starch, so that the degradable period of the starch degradable tableware product is long, the degradation rate is slow, the granularity of weathered fragments is large, and the pollution to the environment is large; the degradation period of the starch degradation tableware is about ten years, and the particle size of the fragments is about 30 mm square; therefore, the prior art has the problems and disadvantages of long degradation period, large granularity and large environmental pollution.
Disclosure of Invention
Aiming at the problems and the defects of the prior art, the invention adopts the bamboo fiber powder and the polylactic acid as the formula, and prepares the bamboo fiber polylactic acid composite plastic for producing and manufacturing the degradable tableware, which is called composite plastic for short, by the preparation process of mixing and granulating; the technical scheme is that the bamboo fiber and polylactic acid composite plastic prepared from the bamboo fiber and polylactic acid composite plastic is rapidly refined, decomposed and blended into soil in the nature after being used and abandoned, and the pollution to the natural environment is reduced.
The purpose of the invention is realized as follows: a preparation method of rapidly refined and degraded bamboo fiber polylactic acid composite plastic comprises a formula and a preparation process, wherein the preparation method comprises the following steps:
the formula comprises bamboo fiber powder, polylactic acid, tributyl citrate and liquid paraffin, wherein:
the bamboo fiber powder is obtained by grinding bamboo fiber paper pulp with water, refining, drying, screening and processing, and has the granularity of 4000-5000 meshes;
the polylactic acid is industrial grade polylactic acid granular plastic;
the tributyl citrate is of industrial grade;
the liquid paraffin is of industrial grade;
the preparation process comprises the following steps:
step one, master batch
1.1, mixing, namely putting 65% of bamboo fiber powder, 25% of polylactic acid, 8% of tributyl citrate and 2% of liquid paraffin into a mixing stirrer, and stirring and mixing to obtain a mother mixed material;
1.2, granulating, namely extruding and granulating the master batch by using an extrusion granulator to obtain a granular master batch;
step two, composite plastic
2.1, mixing, namely putting 40% of polylactic acid, 59% of the master batch and 1% of liquid paraffin into a mixing stirrer for stirring and mixing to obtain a compound material;
2.2, granulating, namely extruding and granulating the compound mixture by using an extrusion granulator to obtain granular composite plastic consisting of polylactic acid and bamboo fibers, namely the bamboo fiber polylactic acid composite plastic, which is called composite plastic for short;
the percentages involved in the preparation process are percentages by weight.
Working principle and beneficial effects
In the composite plastic: the polylactic acid plays a role of an adhesive and a plasticizer, and the bamboo fiber powder plays a role of reinforcing a framework; the composite plastic can be directly made into degradable tableware of knife, fork, spoon and bowl through injection molding; the composite plastic can be mixed with 20 percent of the master batch again, and is formed into a degradable plastic sheet by extrusion and rolling, and the degradable plastic sheet is formed into the degradable tableware of the fast food packaging food box by plastic suction and compression; the degradable tableware made of the composite plastic is collectively called as composite plastic degradable tableware;
because the bamboo fiber powder has mechanical strength higher than that of other plant fibers, the bamboo fiber powder can be increased in the composite plastic on the premise of meeting the requirement of injection molding, the mechanical strength of the composite plastic can be enhanced, and the use strength of the composite plastic degradable tableware can be met and enhanced; polylactic acid and bamboo fiber powder in the composite plastic can be rapidly degraded under the actions of microbial enzymolysis, air oxidation, rainfall hydrolysis and solar photolysis in the natural environment, so that the composite plastic degradable tableware can be rapidly decomposed in the natural environment after being discarded, and can also be rapidly decomposed under the action of microbial enzymolysis even if being buried in soil without sunlight;
because the bamboo fiber powder can enhance the mechanical strength of the composite plastic, the bamboo fiber powder can occupy a larger proportion and a larger density in the composite plastic, so that the particle size of fragments of the composite plastic degradable tableware decomposed in a natural environment is small; experiments prove that the degradation period of the composite plastic degradable tableware in natural environment is 12-18 months, and the degradation period is short; the particle size of the degraded fragments is less than 1 mm square, the fragments can be blended into soil after being refined, and the pollution and damage to the natural environment and the soil are reduced.
Beneficial design expansion
The bamboo fiber polylactic acid composite plastic prepared by the invention can also be used for manufacturing agricultural seedling raising mulching films and agricultural greenhouse films which are rapidly refined and degraded.
The invention adopts the formula of bamboo fiber powder and polylactic acid, and prepares the bamboo fiber polylactic acid composite plastic for producing and manufacturing the degradable tableware, which is called composite plastic for short, by the preparation process of mixing and granulating; the technical scheme is characterized in that the bamboo fiber powder has mechanical strength higher than that of other plant fibers, and the bamboo fiber and polylactic acid are easily decomposed quickly under the action of enzymolysis of microorganisms, oxidation of air, hydrolysis of rainwater and photolysis of the sun in the natural environment, so that the composite plastic degradable tableware made of the bamboo fiber polylactic acid composite plastic is quickly refined, decomposed and blended into soil in the nature after being used and abandoned, and the pollution to the natural environment is reduced.
Description of the embodiments
The preparation method of the bamboo fiber polylactic acid composite plastic with rapid refining degradation according to the present invention is further described in detail with reference to the following specific examples, and those skilled in the art can refer to the formula and the process of the examples to prepare the bamboo fiber polylactic acid composite plastic with rapid refining degradation function, but should not be construed as limiting the present invention in any way.
Detailed Description
Examples
The name of the product is: bamboo fiber polylactic acid composite plastic
The formula is as follows:
the formula comprises bamboo fiber powder, polylactic acid, tributyl citrate and liquid paraffin, wherein:
the bamboo fiber powder is obtained by grinding bamboo fiber paper pulp with water, refining, drying, screening and processing, and has the granularity of 4000-5000 meshes;
the polylactic acid is industrial grade polylactic acid granular plastic;
the tributyl citrate is of industrial grade;
the liquid paraffin is of industrial grade;
preparation of
The preparation conditions are as follows:
ambient air pressure: one atmosphere pressure
Ambient temperature: at room temperature
The preparation main equipment comprises: a mixing stirrer and an extrusion granulator;
the preparation process comprises the following steps:
step one, master batch
1.1, mixing, namely putting 65% of bamboo fiber powder, 25% of polylactic acid, 8% of tributyl citrate and 2% of liquid paraffin into a mixing stirrer, and stirring and mixing to obtain a mother mixed material;
1.2, granulating, namely extruding and granulating the master batch by using an extrusion granulator to obtain a granular master batch;
step two, composite plastic
2.1, mixing, namely putting 40% of polylactic acid, 59% of the master batch and 1% of liquid paraffin into a mixing stirrer for stirring and mixing to obtain a compound material;
2.2, granulating, namely extruding and granulating the compound mixture by using an extrusion granulator to obtain granular composite plastic consisting of polylactic acid and bamboo fibers, namely the bamboo fiber polylactic acid composite plastic, which is called composite plastic for short;
the percentages involved in the preparation process are percentages by weight.
Claims (1)
1. A preparation method of bamboo fiber polylactic acid composite plastic capable of being rapidly refined and degraded comprises a formula and a preparation process, and is characterized in that:
the formula comprises bamboo fiber powder, polylactic acid, tributyl citrate and liquid paraffin, wherein:
the bamboo fiber powder is obtained by grinding bamboo fiber paper pulp with water, refining, drying, screening and processing, and has the granularity of 4000-5000 meshes;
the polylactic acid is industrial grade polylactic acid granular plastic;
the tributyl citrate is of industrial grade;
the liquid paraffin is of industrial grade;
the preparation process comprises the following steps:
step one, master batch
1.1, mixing, namely putting 65% of bamboo fiber powder, 25% of polylactic acid, 8% of tributyl citrate and 2% of liquid paraffin into a mixing stirrer, and stirring and mixing to obtain a mother mixed material;
1.2, granulating, namely extruding and granulating the master batch by using an extrusion granulator to obtain a granular master batch;
step two, composite plastic
2.1, mixing, namely putting 40% of polylactic acid, 59% of the master batch and 1% of liquid paraffin into a mixing stirrer for stirring and mixing to obtain a compound material;
2.2, granulating, namely extruding and granulating the compound mixture by using an extrusion granulator to obtain granular bamboo fiber polylactic acid composite plastic;
the percentages involved in the preparation process are percentages by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010271609.8A CN111334060A (en) | 2020-03-27 | 2020-03-27 | Preparation method of bamboo fiber polylactic acid composite plastic capable of being rapidly refined and degraded |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010271609.8A CN111334060A (en) | 2020-03-27 | 2020-03-27 | Preparation method of bamboo fiber polylactic acid composite plastic capable of being rapidly refined and degraded |
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| Publication Number | Publication Date |
|---|---|
| CN111334060A true CN111334060A (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010271609.8A Withdrawn CN111334060A (en) | 2020-03-27 | 2020-03-27 | Preparation method of bamboo fiber polylactic acid composite plastic capable of being rapidly refined and degraded |
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| Country | Link |
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| CN (1) | CN111334060A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114989627A (en) * | 2022-07-18 | 2022-09-02 | 上海富朋环保科技集团有限公司 | Degradable bamboo pulp sugarcane pulp biscuit box and preparation method thereof |
-
2020
- 2020-03-27 CN CN202010271609.8A patent/CN111334060A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114989627A (en) * | 2022-07-18 | 2022-09-02 | 上海富朋环保科技集团有限公司 | Degradable bamboo pulp sugarcane pulp biscuit box and preparation method thereof |
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Application publication date: 20200626 |
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| WW01 | Invention patent application withdrawn after publication |