CN112409644A - High-temperature-resistant PBAT/PLA full-biodegradable material - Google Patents

High-temperature-resistant PBAT/PLA full-biodegradable material Download PDF

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Publication number
CN112409644A
CN112409644A CN201910787694.0A CN201910787694A CN112409644A CN 112409644 A CN112409644 A CN 112409644A CN 201910787694 A CN201910787694 A CN 201910787694A CN 112409644 A CN112409644 A CN 112409644A
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CN
China
Prior art keywords
temperature
pbat
pla
resistant
starch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910787694.0A
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Chinese (zh)
Inventor
陈翔蔚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foshan Jiaxiang Environmental Protection New Material Technology Co ltd
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Foshan Jiaxiang Environmental Protection New Material Technology Co ltd
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Priority to CN201910787694.0A priority Critical patent/CN112409644A/en
Publication of CN112409644A publication Critical patent/CN112409644A/en
Pending legal-status Critical Current

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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
    • C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
    • C08L3/02—Starch; Degradation products thereof, e.g. dextrin
    • 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
    • C08J3/005—Processes for mixing polymers
    • 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
    • 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
    • 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
    • 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
    • C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • 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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/06—Biodegradable
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2312/00—Crosslinking

Abstract

The invention discloses a high-temperature-resistant PBAT/PLA full-biodegradable material which is prepared from the following raw materials in parts by weight: 40-50% of starch, 10-15% of PBAT (poly (adipic acid)/butylene terephthalate), 10-15% of PLA (polylactic acid), 5-18% of plasticizer, 1-5% of coupling agent, 3-5% of antioxidant, 5-10% of chain extender and 3-5% of cross-linking agent. The preparation method is simple, and can reduce the cost, maintain the stiffness and the toughness and simultaneously improve the Vicat deformation temperature to 100 ℃.

Description

High-temperature-resistant PBAT/PLA full-biodegradable material
Technical Field
The invention relates to the field of degradation materials, in particular to a high-temperature-resistant PBAT/PLA full-biodegradable material.
Background
Most of the prior degradable products use starch and PVA (polyvinyl alcohol), and the material is hydrophilic, can be dissolved immediately when meeting water, is excessively soft, has insufficient stiffness, and is not suitable for manufacturing tableware or water containers. The prior waterproof disposable articles such as tableware and the like are basically made of common plastics such as PP, HDPE, PET and the like. These are waterproof materials, but are not degradable, not environmentally friendly, and form a "white pollution" to the environment.
If pure PBAT (poly adipic acid/butylene terephthalate) \ pure PLA (polylactic acid) is used for producing products, the waterproof, high-stiffness and toughness properties can be obtained, but the prominent characteristics are that: 1. high cost (about 2.8 ten thousand yuan per ton); 2. the Vicat deformation temperature is low (50-60 degrees).
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a high-temperature-resistant PBAT/PLA fully biodegradable material which is simple to prepare, can reduce the cost, maintain the stiffness and the toughness and simultaneously improve the vicat deformation temperature to 100 ℃.
In order to achieve the aim of the invention, the invention adopts the specific scheme that:
a high-temperature-resistant PBAT/PLA full-biodegradable material is prepared from the following raw materials in parts by weight: 40-50% of starch, 10-15% of PBAT (poly (adipic acid)/butylene terephthalate), 10-15% of PLA (polylactic acid), 5-18% of plasticizer, 1-5% of coupling agent, 3-5% of antioxidant, 5-10% of chain extender and 3-5% of cross-linking agent.
Further, the preparation method of the material comprises the following steps: the starch and the coupling agent are firstly put in a high-speed mixer to be stirred at low speed for 15-30 minutes at normal temperature and 60 revolutions per minute to activate the surface of the starch, then other materials are added to be stirred at high speed for 15-30 minutes at the temperature of 90-100 ℃, and then the mixture is put in a double-screw plastic extruder to be extruded and granulated at the temperature of 190-200 ℃.
The invention has the beneficial effects that:
waterproof, high, the toughness of stiffness, the cost is less than pure PBAT (poly adipic acid/butylene terephthalate)/pure PLA (polylactic acid), this product owing to used molecular crosslinking technique and molecular crystallization technique, and the vicat deformation temperature can reach 100 degrees, is applicable to injection moulding, and the shaping temperature: 190-200 ℃, the degradation time can be controlled within 3-18 months, PBAT (poly adipic acid/butylene terephthalate) is a fully degradable material/PLA (polylactic acid) is a corn starch extract, and the main materials are carbon dioxide and water, so that environmental pollution can not be caused; all other auxiliary agents can be changed into natural inorganic matters in nature.
Detailed Description
The present invention is further described below by way of specific examples, but the present invention is not limited to only the following examples. Variations, combinations, or substitutions of the invention, which are within the scope of the invention or the spirit, scope of the invention, will be apparent to those of skill in the art and are within the scope of the invention.
A high-temperature-resistant PBAT/PLA full-biodegradable material is prepared from the following raw materials in parts by weight: 40-50% of starch, 10-15% of PBAT (poly (adipic acid)/butylene terephthalate), 10-15% of PLA (polylactic acid), 5-18% of plasticizer, 1-5% of coupling agent, 3-5% of antioxidant, 5-10% of chain extender and 3-5% of cross-linking agent.
The preparation method of the material comprises the following steps: the starch and the coupling agent are firstly put in a high-speed mixer to be stirred at low speed for 15-30 minutes at normal temperature and 60 revolutions per minute to activate the surface of the starch, then other materials are added to be stirred at high speed for 15-30 minutes at the temperature of 90-100 ℃, and then the mixture is put in a double-screw plastic extruder to be extruded and granulated at the temperature of 190-200 ℃.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (2)

1. A high-temperature-resistant PBAT/PLA full-biodegradable material is characterized by being prepared from the following raw materials in parts by weight: 40-50% of starch, 10-15% of PBAT (poly (adipic acid)/butylene terephthalate), 10-15% of PLA (polylactic acid), 5-18% of plasticizer, 1-5% of coupling agent, 3-5% of antioxidant, 5-10% of chain extender and 3-5% of cross-linking agent.
2. The high-temperature-resistant PBAT/PLA fully biodegradable material as claimed in claim 1, which is prepared by the following steps: the starch and the coupling agent are firstly put in a high-speed mixer to be stirred at low speed for 15-30 minutes at normal temperature and 60 revolutions per minute to activate the surface of the starch, then other materials are added to be stirred at high speed for 15-30 minutes at the temperature of 90-100 ℃, and then the mixture is put in a double-screw plastic extruder to be extruded and granulated at the temperature of 190-200 ℃.
CN201910787694.0A 2019-08-23 2019-08-23 High-temperature-resistant PBAT/PLA full-biodegradable material Pending CN112409644A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910787694.0A CN112409644A (en) 2019-08-23 2019-08-23 High-temperature-resistant PBAT/PLA full-biodegradable material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910787694.0A CN112409644A (en) 2019-08-23 2019-08-23 High-temperature-resistant PBAT/PLA full-biodegradable material

Publications (1)

Publication Number Publication Date
CN112409644A true CN112409644A (en) 2021-02-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115011079A (en) * 2022-05-31 2022-09-06 东莞市惠国新材科技有限公司 Polymer material and preparation method and application thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130253102A1 (en) * 2012-03-26 2013-09-26 Sung-Yuan LIU Biodegradable plastic material
CN103627153A (en) * 2012-08-20 2014-03-12 上海杰事杰新材料(集团)股份有限公司 Entire biodegradation PLA/PBAT composite material and preparing method therefor
CN105038163A (en) * 2015-08-19 2015-11-11 广东益德环保科技有限公司 Fully-biodegradable material as well as preparation method and application thereof
CN106366587A (en) * 2016-08-26 2017-02-01 江苏允友成生物环保材料有限公司 Preparation method of biodegradable polylactic acid/starch composite

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130253102A1 (en) * 2012-03-26 2013-09-26 Sung-Yuan LIU Biodegradable plastic material
CN103627153A (en) * 2012-08-20 2014-03-12 上海杰事杰新材料(集团)股份有限公司 Entire biodegradation PLA/PBAT composite material and preparing method therefor
CN105038163A (en) * 2015-08-19 2015-11-11 广东益德环保科技有限公司 Fully-biodegradable material as well as preparation method and application thereof
CN106366587A (en) * 2016-08-26 2017-02-01 江苏允友成生物环保材料有限公司 Preparation method of biodegradable polylactic acid/starch composite

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115011079A (en) * 2022-05-31 2022-09-06 东莞市惠国新材科技有限公司 Polymer material and preparation method and application thereof

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