CN110804287A - Heat-resistant modified polylactic acid composite material - Google Patents
Heat-resistant modified polylactic acid composite material Download PDFInfo
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- CN110804287A CN110804287A CN201911094875.1A CN201911094875A CN110804287A CN 110804287 A CN110804287 A CN 110804287A CN 201911094875 A CN201911094875 A CN 201911094875A CN 110804287 A CN110804287 A CN 110804287A
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- polylactic acid
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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
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/24—Crystallisation aids
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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Abstract
The invention discloses a heat-resistant modified polylactic acid composite material, which comprises the following raw material components: polylactic acid, polybutylene succinate, polybutylene adipate/terephthalate, erucamide, acetyl tributyl citrate, glycidyl methacrylate grafted ethyl methacrylate copolymer, antioxidant 10760 and talcum powder. The heat resistance of the polylactic acid composite material is improved by introducing a fully biodegradable polybutylene succinate component with excellent temperature resistance, adopting poly adipic acid/polybutylene terephthalate for toughening treatment and adopting superfine talcum powder to promote crystallization of a composite system, so that the polylactic acid composite material is suitable for application in the field of disposable articles. The straw formed by adopting the composite material in an extrusion mode can be used for processing and preparing hot drink packages, and the application of the full-biomass degradable composite material in the field of disposable products is expanded.
Description
Technical Field
The invention relates to the technical field of polylactic acid composite materials, and particularly relates to a heat-resistant modified polylactic acid composite material.
Background
Polylactic acid is a bio-based completely biodegradable environment-friendly material prepared by taking natural starch as a main raw material through processes of biological fermentation, chemical polymerization and the like, and is rapidly popularized and applied in the fields of medical treatment and daily consumer goods due to excellent biodegradability and biocompatibility. With the spread of plastic-limiting and plastic-forbidden orders nationwide, the traditional petroleum-based plastics represented by polypropylene gradually quit the field of disposable product production, and replace the conventional petroleum-based plastics with fully biodegradable polylactic acid and composite materials thereof. However, pure polylactic acid has poor heat resistance and a heat distortion temperature of only about 55 ℃, and the defect limits the application of the polylactic acid in many occasions.
The traditional temperature-resistant modification of polylactic acid mainly focuses on filling blending and nucleation crystallization control. Although the heat resistance of the composite material can be improved to a certain extent by filling and blending, the content of the filler in the filling and blending process is usually high, and the characteristics and essence of the composite material can be greatly changed, even the degradation performance of the material can be influenced. The crystallization property of the polylactic acid composite material in the hot-forming process can be changed by adding a very small amount of nucleating agent, the crystallization speed is accelerated, the crystallinity is improved, and the temperature resistance of the composite material is improved, but the crystallization treatment process is complex and is not easy to control, the product forming efficiency is limited, the modulus of the crystallized polylactic acid material is improved, the impact strength is greatly degraded, and the use is influenced.
Disclosure of Invention
The invention aims to provide a heat-resistant modified polylactic acid composite material aiming at the defects in the prior art, which can effectively improve the heat resistance of the polylactic acid composite material, thereby achieving the purpose of expanding the application range of polylactic acid.
The purpose of the invention is realized by the following technical scheme:
a heat-resistant modified polylactic acid composite material comprises the following raw material components: polylactic acid, polybutylene succinate, polybutylene adipate/terephthalate, erucamide, acetyl tributyl citrate, glycidyl methacrylate grafted ethyl methacrylate copolymer, antioxidant 10760 and talcum powder.
Further, the mass fractions of the raw materials are as follows: polylactic acid: 45-60% of poly (butylene succinate): 25-40%, polybutylene adipate/terephthalate: 10-20% and erucamide: 0.1-0.5%, acetyl tributyl citrate: 0.1-0.5%, glycidyl methacrylate grafted ethyl methacrylate copolymer: 0.1-4 wt%, antioxidant 10760: 1-0.5%, talc powder: 1 to 4 percent.
Furthermore, the particle size of the talcum powder is larger than 10000 meshes.
Preferably, the particle size of the talc powder is 20000 meshes.
Further, the grafting ratio of the glycidyl methacrylate grafted ethyl methacrylate copolymer is more than 5%.
Preferably, the glycidyl methacrylate grafted ethyl methacrylate copolymer has a grafting ratio of 15%.
Compared with the prior art, the invention has the beneficial effects that:
the heat resistance of the polylactic acid composite material is improved by introducing a fully biodegradable polybutylene succinate component with excellent temperature resistance, adopting poly adipic acid/polybutylene terephthalate for toughening treatment and adopting superfine talcum powder to promote crystallization of a composite system, so that the polylactic acid composite material is suitable for application in the field of disposable articles. The straw formed by adopting the composite material in an extrusion mode can be used for processing and preparing hot drink packages, and the application of the full-biomass degradable composite material in the field of disposable products is expanded.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the following examples, but the scope of the present invention is not limited to the following specific examples.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by existing methods.
Example 1
The embodiment provides a heat-resistant modified polylactic acid composite material, which comprises the following raw materials in percentage by mass: polylactic acid: 50%, polybutylene succinate: 32%, polybutylene adipate/terephthalate: 15%, erucamide: 0.3%, acetyl tributyl citrate: 0.3%, glycidyl methacrylate grafted ethyl methacrylate copolymer with a grafting ratio of 10%: 0.6wt%, antioxidant 1076: 0.3%, 20000 mesh talc powder: 1.5 percent.
The composite material is extruded to form the disposable straw with the thickness of 0.5mm, and the straw can be used for drinking boiled water without obvious deformation.
Example 2
The embodiment provides a heat-resistant modified polylactic acid composite material, which comprises the following raw materials in percentage by mass: polylactic acid: 45% and polybutylene succinate: 40%, polybutylene adipate/terephthalate: 10%, erucamide: 0.5%, acetyl tributyl citrate: 0.5%, glycidyl methacrylate grafted ethyl methacrylate copolymer with a grafting rate of 8%: 2.5wt%, antioxidant 1076: 0.5%, 12000 mesh talc powder: 1 percent.
The composite material is extruded to form the disposable straw with the thickness of 0.8mm, and the straw can be used for drinking boiled water without obvious deformation.
Example 3
The embodiment provides a heat-resistant modified polylactic acid composite material, which comprises the following raw materials in percentage by mass: polylactic acid: 60%, polybutylene succinate: 25%, polybutylene adipate/terephthalate: 10%, erucamide: 0.4%, acetyl tributyl citrate: 0.1% of glycidyl methacrylate grafted ethyl methacrylate copolymer with a grafting rate of 15%: 0.7wt%, antioxidant 1076: 0.2%, 16000 mesh talc: 4 percent.
The composite material is injection molded into disposable beverage cup with mold temperature of 50 deg.c and wall thickness of 0.5mm, and the beverage cup may be used for holding hot beverage without deformation.
Example 4
The embodiment provides a heat-resistant modified polylactic acid composite material, which comprises the following raw materials in percentage by mass: polylactic acid: 48%, polybutylene succinate: 30%, polybutylene adipate/terephthalate: 16%, erucamide: 0.4%, acetyl tributyl citrate: 0.3%, glycidyl methacrylate grafted ethyl methacrylate copolymer with a grafting ratio of 18%: 1.5wt%, antioxidant: 10760.3%, 24000 mesh talc powder: 3.5 percent.
The composite material is injection molded into disposable beverage cup with mold temperature of 55 deg.c and wall thickness of 0.8mm, and the beverage cup may be used for holding hot beverage without deformation.
It should be understood that the above examples are only for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. The heat-resistant modified polylactic acid composite material is characterized by comprising the following raw material components: polylactic acid, polybutylene succinate, polybutylene adipate/terephthalate, erucamide, acetyl tributyl citrate, glycidyl methacrylate grafted ethyl methacrylate copolymer, antioxidant 10760 and talcum powder.
2. The heat-resistant modified polylactic acid composite material according to claim 1, wherein the raw materials comprise the following components in percentage by mass: polylactic acid: 45-60% of poly (butylene succinate): 25-40%, polybutylene adipate/terephthalate: 10-20% and erucamide: 0.1-0.5%, acetyl tributyl citrate: 0.1-0.5%, glycidyl methacrylate grafted ethyl methacrylate copolymer: 0.1-4 wt%, antioxidant 10760: 1-0.5%, talc powder: 1 to 4 percent.
3. The heat-resistant modified polylactic acid composite material according to claim 1, wherein the particle size of the talc powder is larger than 10000 meshes.
4. The heat-resistant modified polylactic acid composite material according to claim 3, wherein the particle size of the talc powder is 20000 mesh.
5. The heat-resistant modified polylactic acid composite material according to claim 1, wherein the glycidyl methacrylate grafted ethyl methacrylate copolymer grafting ratio is more than 5%.
6. The heat-resistant modified polylactic acid composite material according to claim 5, wherein the glycidyl methacrylate grafted ethyl methacrylate copolymer has a grafting ratio of 15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911094875.1A CN110804287A (en) | 2019-11-11 | 2019-11-11 | Heat-resistant modified polylactic acid composite material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911094875.1A CN110804287A (en) | 2019-11-11 | 2019-11-11 | Heat-resistant modified polylactic acid composite material |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111378261A (en) * | 2020-03-05 | 2020-07-07 | 温州三星环保包装有限公司 | Processing method of disposable lunch box |
| CN112521735A (en) * | 2020-10-30 | 2021-03-19 | 中船重工鹏力（南京）塑造科技有限公司 | PLA heat-resistant straw and preparation method thereof |
| CN113429750A (en) * | 2021-06-05 | 2021-09-24 | 贾帅 | Composite toughened high-temperature-resistant polylactic acid modified material and preparation method thereof |
| CN114133714A (en) * | 2021-07-09 | 2022-03-04 | 浙江播下环保科技有限公司 | Preparation method and device of high-temperature-resistant polylactic acid straw |
| CN114163796A (en) * | 2021-12-14 | 2022-03-11 | 杭州晟天新材料科技有限公司 | Full-biodegradable material special for nail beautification and preparation method thereof |
| CN115678225A (en) * | 2022-10-27 | 2023-02-03 | 万华化学（宁波）有限公司 | High-heat-resistance polylactic acid composite material and preparation method thereof |
| CN116606538A (en) * | 2023-06-26 | 2023-08-18 | 苏州优矿塑新材料股份有限公司 | Degradable composite material based on reaction compatibilization, environment-friendly straw and preparation method thereof |
Citations (2)
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| CN105602215A (en) * | 2016-01-26 | 2016-05-25 | 深圳市绿自然生物降解科技有限公司 | Biodegradable heat-resistant sheet and preparation method thereof |
| WO2019011643A1 (en) * | 2017-07-10 | 2019-01-17 | Basf Se | Biodegradable film for food packaging |
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2019
- 2019-11-11 CN CN201911094875.1A patent/CN110804287A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105602215A (en) * | 2016-01-26 | 2016-05-25 | 深圳市绿自然生物降解科技有限公司 | Biodegradable heat-resistant sheet and preparation method thereof |
| WO2019011643A1 (en) * | 2017-07-10 | 2019-01-17 | Basf Se | Biodegradable film for food packaging |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111378261A (en) * | 2020-03-05 | 2020-07-07 | 温州三星环保包装有限公司 | Processing method of disposable lunch box |
| CN111378261B (en) * | 2020-03-05 | 2022-06-28 | 温州三星环保包装有限公司 | Processing method of disposable lunch box |
| CN112521735A (en) * | 2020-10-30 | 2021-03-19 | 中船重工鹏力（南京）塑造科技有限公司 | PLA heat-resistant straw and preparation method thereof |
| CN113429750A (en) * | 2021-06-05 | 2021-09-24 | 贾帅 | Composite toughened high-temperature-resistant polylactic acid modified material and preparation method thereof |
| WO2022252266A1 (en) * | 2021-06-05 | 2022-12-08 | 贾帅 | Composite toughened and high-temperature-resistant polylactic acid modified material and preparation method therefor |
| CN114133714A (en) * | 2021-07-09 | 2022-03-04 | 浙江播下环保科技有限公司 | Preparation method and device of high-temperature-resistant polylactic acid straw |
| CN114163796A (en) * | 2021-12-14 | 2022-03-11 | 杭州晟天新材料科技有限公司 | Full-biodegradable material special for nail beautification and preparation method thereof |
| CN115678225A (en) * | 2022-10-27 | 2023-02-03 | 万华化学（宁波）有限公司 | High-heat-resistance polylactic acid composite material and preparation method thereof |
| CN116606538A (en) * | 2023-06-26 | 2023-08-18 | 苏州优矿塑新材料股份有限公司 | Degradable composite material based on reaction compatibilization, environment-friendly straw and preparation method thereof |
| CN116606538B (en) * | 2023-06-26 | 2024-01-19 | 苏州优矿塑新材料股份有限公司 | Degradable composite material based on reaction compatibilization, environment-friendly straw and preparation method thereof |
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Effective date of registration: 20211018 Address after: 410000 room 25004, phase II business complex building, Yunda Central Plaza, No. 567, Changsha Avenue, Lituo street, Yuhua District, Changsha City, Hunan Province Applicant after: Hunan Lingyue New Material Co.,Ltd. Address before: 412000 Taishan Road, Tianyuan District, Zhuzhou, Hunan Province, No. 88 Applicant before: HUNAN University OF TECHNOLOGY |
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