CN112375357A - Degradable modified polylactic acid composition and application thereof - Google Patents
Degradable modified polylactic acid composition and application thereof Download PDFInfo
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- CN112375357A CN112375357A CN202011411640.3A CN202011411640A CN112375357A CN 112375357 A CN112375357 A CN 112375357A CN 202011411640 A CN202011411640 A CN 202011411640A CN 112375357 A CN112375357 A CN 112375357A
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- Prior art keywords
- polylactic acid
- acid composition
- modified polylactic
- parts
- degradable modified
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- 239000004626 polylactic acid Substances 0.000 title claims abstract description 42
- 229920000747 poly(lactic acid) Polymers 0.000 title claims abstract description 41
- 239000000203 mixture Substances 0.000 title claims abstract description 38
- 239000004014 plasticizer Substances 0.000 claims abstract description 14
- 239000007822 coupling agent Substances 0.000 claims abstract description 13
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims description 14
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 12
- -1 polypropylene Polymers 0.000 claims description 7
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 239000002518 antifoaming agent Substances 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 4
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 4
- 239000004745 nonwoven fabric Substances 0.000 claims description 4
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 3
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 3
- 229920006324 polyoxymethylene Polymers 0.000 claims description 3
- 235000011888 snacks Nutrition 0.000 claims description 3
- 229920000877 Melamine resin Polymers 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 125000005456 glyceride group Chemical group 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 39
- 229920000459 Nitrile rubber Polymers 0.000 abstract description 5
- 239000004433 Thermoplastic polyurethane Substances 0.000 abstract description 3
- 229920002803 thermoplastic polyurethane Polymers 0.000 abstract description 3
- 239000001913 cellulose Substances 0.000 abstract description 2
- 229920002678 cellulose Polymers 0.000 abstract description 2
- 239000004744 fabric Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000012935 Averaging Methods 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical class CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 235000013410 fast food Nutrition 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 235000021485 packed food Nutrition 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000009757 thermoplastic moulding Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- 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
- C08L2203/00—Applications
- C08L2203/12—Applications used for fibers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a degradable modified polylactic acid composition, which comprises the following components in parts by mass: 50-65 parts of polylactic acid; 5-10 parts of nitrile rubber; 8-12 parts of cellulose; 12-15 parts of thermoplastic polyurethane; 3-6 parts of a coupling agent; 2-5 parts of a plasticizer. The degradable modified polylactic acid composition and the application thereof provided by the invention can improve the mechanical strength of materials.
Description
Technical Field
The invention belongs to the technical field of macromolecules, and relates to a degradable modified polylactic acid composition and application thereof.
Background
Polylactic acid (PLA) is a polymer with excellent biocompatibility and biodegradability, is derived from crops (such as corn) which are renewable resources, and has the most prominent advantage of biodegradability, and can be completely degraded by microorganisms in the nature after being used to finally generate carbon dioxide and water, so that the PLA does not pollute the environment and is very beneficial to protecting the environment.
The polylactic acid has good mechanical property and physical property, is suitable for various processing methods such as blow molding, thermoplastic molding and the like, is convenient to process and has wide application. Can be used for processing various plastic products from industry to civilian use, packaged food, fast food lunch boxes, non-woven fabrics, industrial and civilian cloth. And then the fabric is processed into agricultural fabrics, health care fabrics, cleaning rags, sanitary products, outdoor ultraviolet-proof fabrics, tent cloth, floor mat surfaces and the like, and the market prospect is very good.
Disclosure of Invention
The invention aims to provide a degradable modified polylactic acid composition and application thereof, aiming at achieving the effect of improving mechanical properties.
In order to solve the technical problems, the invention provides a degradable modified polylactic acid composition which comprises the following components in parts by mass:
the invention further provides that the coupling agent is a mixture of one or more of KH570, KH792, DL602 and DL 171.
The invention is further provided that the plasticizer is one or a mixture of dibutyl phthalate, dibutyltin dilaurate and di (2-ethylhexyl) phthalate.
The invention is further provided that the polypropylene composite material also comprises 4-5 parts by mass of polypropylene.
The invention is further provided with 2-6 parts of montmorillonite by mass.
The invention is further provided that the material also comprises 8-10 parts of polyformaldehyde by mass.
The invention is further provided that the coating also comprises 3-5 parts of defoaming agent by mass.
The invention further provides that the defoaming agent comprises one or a mixture of more of trialkyl melamine, dialkyl phosphate, fatty acid glyceride and polychlorinated ethane.
The invention is further configured to use any one of the degradable modified polylactic acid compositions in medical treatment, pipelines, non-woven fabrics and snack boxes.
The invention further provides the application of the degradable modified polylactic acid composition in toys, furniture and sanitary products.
Compared with the prior art, the degradable modified polylactic acid composition provided by the invention has the advantages that firstly, polylactic acid as an aggregate has good mechanical properties, namely good tensile strength and ductility, and meanwhile, as the polylactic acid injection molded product is porous, other components can be embedded into the aggregate formed by polylactic acid when the polylactic acid injection molded product is subjected to co-extrusion modification with other components, so that the integrity of the whole material can be better, the impact strength of the material can be improved, and the tensile strength and the bending strength of the material can be improved.
Among other components, firstly, the nitrile rubber has good adhesive force, so that the components can be well and tightly connected, the integrity of the material is better, and the mechanical strength of the material is improved; although the nitrile rubber has strong polarity, the coupling agent is also included in the components, so that the defects that the nitrile rubber has strong polarity and is not easy to blend with other components can be overcome through the coupling agent, and the overall structural strength of the material is improved qualitatively under the synergistic effect of the coupling agent and the nitrile rubber; moreover, the coupling agent also acts on other structures which can act simultaneously, so that better integrity of the material is ensured.
The cellulose in the material has long molecular chains and also has higher structural strength, so that the material can be well promoted to bear the action of bending force or tensile force, and the impact acting force can be well absorbed. Meanwhile, the thermoplastic polyurethane has good elasticity, so that when the material is subjected to external acting force, the thermoplastic polyurethane can well prevent the material from breaking or cracking, and the bending strength and the tensile strength of the material are improved.
The plasticizer can weaken the secondary bond among the components, increase the mobility of the components, reduce the crystallinity and plasticity of the components, enhance the flexibility of the material and facilitate the processing. Moreover, when the plasticizer is dibutyl phthalate, the plasticizer has a corresponding plasticizing effect, and simultaneously has good flexibility, good softening property, stability, flexibility resistance and cohesiveness, so that the overall flexibility and the flexibility of the material can be improved, the cohesiveness enables the connection effect among the structures of all parts of the whole material to be better, and the external tensile force can be better borne. Furthermore, when the plasticizer is di (2-ethylhexyl) phthalate, the plasticizer can also increase the elasticity and toughness of the material, thereby improving the tensile resistance of the material.
The polypropylene has high-strength mechanical property, good high-wear-resistance processing property, good grafting and compounding functions, can graft all components in the material, and can form tiny vertical structure distribution in each tiny range and parallel form similar to a grid; therefore, when the material is subjected to external acting force, the acting force applied to the structure of the grid-shaped part can be conducted towards the periphery, so that the acting force can be dispersed, local damage is well prevented, and the material has strong bending or impact strength when viewed from the outside; meanwhile, the polypropylene has sufficient strength, so that the strength of the material is further improved as a whole. Likewise, polyoxymethylene also has sufficient mechanical properties, such as strength, toughness, etc., to improve the mechanical properties of the material.
The montmorillonite has strong adsorption capacity and cation exchange performance, and can be used as an adsorbent filler, and the montmorillonite can firstly play a role of a crystal nucleus for material crystallization in the material and can adsorb the material after crystallization, so that the material is more concentrated. And the addition of the defoaming agent enables the material to have no bubbles, so that the integrity of the material can be improved, and the mechanical strength of the material can be maintained.
Detailed Description
The following describes a degradable modified polylactic acid composition and its application in further detail with reference to specific examples. Advantages and features of the present invention will become apparent from the following description and from the claims.
Example 1
A degradable modified polylactic acid composition comprises the following components in parts by mass:
the coupling agent is KH 570. The plasticizer is dibutyl phthalate.
The modified polylactic acid composition is applied to sanitary products.
Example 2
A degradable modified polylactic acid composition comprises the following components in parts by mass:
the coupling agent is DL 602. The plasticizer is di (2-ethylhexyl) phthalate. The modified polylactic acid composition is applied to medical treatment.
Example 3
A degradable modified polylactic acid composition comprises the following components in parts by mass:
the coupling agent is KH 792. The plasticizer is dibutyltin dilaurate.
The modified polylactic acid composition is applied to a pipeline.
Example 4
A degradable modified polylactic acid composition comprises the following components in parts by mass:
the coupling agent was DL 171. The plasticizer is dibutyl phthalate.
The modified polylactic acid composition is applied to snack boxes.
Example 5
A degradable modified polylactic acid composition comprises the following components in parts by mass:
the coupling agent is KH 570. The plasticizer is equal-mass di (2-ethylhexyl) phthalate and dibutyl phthalate.
The modified polylactic acid composition is applied to toys.
Example 6
A degradable modified polylactic acid composition comprises the following components in parts by mass:
the coupling agent is KH 570. The plasticizer is equal-mass di (2-ethylhexyl) phthalate and dibutyl phthalate.
The modified polylactic acid composition is applied to non-woven fabrics.
Design experiment
Several materials were produced separately by the above examples, ten of which were randomly tested for tensile strength (MPa) by GB1040-79, ten of which were randomly tested for flexural strength (MPa) by GB1042-79, and ten of which were randomly tested for impact strength (KJ/m) by GB/T1843-2) Averaging thirty data in each group, and respectively recording as embodiment one to embodiment six; taking a plurality of polylactic acid modified materials on the market, randomly testing the tensile strength (MPa) of ten materials in the materials by GB1040-79, randomly testing the bending strength (MPa) of another ten materials in the materials by GB1042-79, and randomly testing the impact strength (KJ/m) of other ten materials in the materials by GB/T1843-2) And averaging thirty data in each group, which is recorded as example seven, and recording the test results as follows:
| examples | Tensile Strength (MPa) | Flexural Strength (MPa) | Impact Strength (KJ/m)2) |
| Example 1 | 58.34 | 75.641 | 84.3 |
| Example 2 | 56.82 | 78.359 | 90.2 |
| Example 3 | 62.48 | 83.216 | 92.3 |
| Example 4 | 69.66 | 86.243 | 105.6 |
| Example 5 | 74.38 | 90.137 | 121.8 |
| Example 6 | 78.94 | 93.584 | 135.4 |
| Example 7 | 47.35 | 69.348 | 71.2 |
It should be noted that, in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. A degradable modified polylactic acid composition is characterized by comprising the following components in parts by mass:
2. the degradable modified polylactic acid composition according to claim 1, wherein the coupling agent is a mixture of one or more of KH570, KH792, DL602 and DL 171.
3. The degradable modified polylactic acid composition according to claim 1, wherein the plasticizer is one or a mixture of dibutyl phthalate, dibutyl tin dilaurate and di (2-ethylhexyl) phthalate.
4. The degradable modified polylactic acid composition according to claim 1, further comprising 4-5 parts by weight of polypropylene.
5. A degradable modified polylactic acid composition according to claim 1, further comprising 2-6 parts by weight of montmorillonite.
6. The degradable modified polylactic acid composition according to claim 1, further comprising 8-10 parts by weight of polyoxymethylene.
7. A degradable modified polylactic acid composition according to claim 1, further comprising 3 to 5 parts by mass of an antifoaming agent.
8. A degradable modified polylactic acid composition according to claim 7, wherein the antifoaming agent comprises one or more of trialkyl melamine, dialkyl phosphate, fatty glyceride and polychloroethane.
9. Use of a degradable modified polylactic acid composition according to any one of claims 1 to 8 in medical treatment, pipes, non-woven fabrics, snack boxes.
10. Use of a degradable modified polylactic acid composition according to any one of claims 1 to 8 in toys, furniture, sanitary products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011411640.3A CN112375357A (en) | 2020-12-04 | 2020-12-04 | Degradable modified polylactic acid composition and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011411640.3A CN112375357A (en) | 2020-12-04 | 2020-12-04 | Degradable modified polylactic acid composition and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112375357A true CN112375357A (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011411640.3A Pending CN112375357A (en) | 2020-12-04 | 2020-12-04 | Degradable modified polylactic acid composition and application thereof |
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| CN (1) | CN112375357A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115387023A (en) * | 2022-08-02 | 2022-11-25 | 广东汇齐新材料有限公司 | Preparation method of TPU/PLA melt-blown composite non-woven fabric |
| CN117777692A (en) * | 2024-02-23 | 2024-03-29 | 广东中凯塑业有限公司 | Antibacterial PLA-based degradable polymer material, preparation method and application thereof in emulsion pump head |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008063577A (en) * | 2006-09-05 | 2008-03-21 | Chitec Technology Co Ltd | Biodegradable resin composition improved in toughness and heat resistance, and method for manufacturing biodegradable resin |
| CN107603178A (en) * | 2017-09-30 | 2018-01-19 | 四会市启德信息咨询服务有限公司 | A kind of heat-resisting biodegradable plastic material |
-
2020
- 2020-12-04 CN CN202011411640.3A patent/CN112375357A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008063577A (en) * | 2006-09-05 | 2008-03-21 | Chitec Technology Co Ltd | Biodegradable resin composition improved in toughness and heat resistance, and method for manufacturing biodegradable resin |
| CN107603178A (en) * | 2017-09-30 | 2018-01-19 | 四会市启德信息咨询服务有限公司 | A kind of heat-resisting biodegradable plastic material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115387023A (en) * | 2022-08-02 | 2022-11-25 | 广东汇齐新材料有限公司 | Preparation method of TPU/PLA melt-blown composite non-woven fabric |
| WO2024026921A1 (en) * | 2022-08-02 | 2024-02-08 | 广东汇齐新材料有限公司 | Preparation method for tpu/pla melt-blown composite non-woven fabric |
| CN117777692A (en) * | 2024-02-23 | 2024-03-29 | 广东中凯塑业有限公司 | Antibacterial PLA-based degradable polymer material, preparation method and application thereof in emulsion pump head |
| CN117777692B (en) * | 2024-02-23 | 2024-05-07 | 广东中凯塑业有限公司 | Antibacterial PLA-based degradable polymer material, preparation method and application thereof in emulsion pump head |
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