CN105017738A - Fully biodegradable material taking polylactic acid/polymethyl ethylene carbonic ester as basic material and preparation method of fully biodegradable material - Google Patents
Fully biodegradable material taking polylactic acid/polymethyl ethylene carbonic ester as basic material and preparation method of fully biodegradable material Download PDFInfo
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- CN105017738A CN105017738A CN201410689792.8A CN201410689792A CN105017738A CN 105017738 A CN105017738 A CN 105017738A CN 201410689792 A CN201410689792 A CN 201410689792A CN 105017738 A CN105017738 A CN 105017738A
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Abstract
The invention discloses a fully biodegradable material taking polylactic acid/polymethyl ethylene carbonic ester as a basic material and a preparation method of the fully biodegradable material. The material is composed of polylactic acid, polymethyl ethylene carbonic ester resin, biologic filler, inorganic filler and a small amount of auxiliaries. The material acquires American ASTMD6400 authentication, European EN13432 authentication and Australian AS4736 authentication. The fully biodegradable material disclosed by the invention comprises the following components in parts by weight: 5-60 parts of polylactic acid (PLA), 10-60 parts of polymethyl ethylene carbonic ester resin, 5-35 parts of biologic filler, 5-30 parts of inorganic filler and 0.3-10 parts of auxiliaries. The components are fully mixed and are melted and plastified by a screw to directly extrude 0.2-2 mm thick panels. The panels are processed into fruit trays, vegetable trays, disposable knives and forks and the like through mold pressing.
Description
Technical field
The invention belongs to technical field of polymer materials, particularly relating to a kind of take PLA/PPC as full-biodegradable material of base-material and preparation method thereof.
Background technology
The application of current biodegradable material is more and more extensive, also more and more higher to the requirement of degradable material, not only has certain requirement to the performance of material, requires also very high, especially in food use and disposable product to its degraded security aspect.
PLA material is Wholly-degradable biomaterial, and it comprises PLLA and PDLA, and it has superior physical property, can be divided into injection grade according to its purposes, film-grade and fibre-grade.This material is hard, and tensile strength is comparatively large, but shock strength is limited, directly can not be used for moulding plate etc.PPC belongs to thermoplastic biodegradable's plastics, is the multipolymer of tetramethylene adipate and mutual-phenenyl two acid bromide two alcohol ester, has the characteristic of PBA and PBT concurrently, and existing good ductility and elongation at break, also have good thermotolerance and impact property; In addition, also there is excellent biological degradability.But the tensile strength of PPC material is inadequate, directly can not be used for sheet material etc.; Their respective advantages is got up by we, and their Application Areas can be made to expand.
Summary of the invention
The present invention is in conjunction with prior art, and developing a kind of take PLA/PBAT as the full-biodegradable material of base-material.According to mass fraction meter, this material is made up of following component:
Poly(lactic acid) (PLA) 5-60
Lined polymethyl ethylene carbonate resin (PPC) 10-60
Bio-based filler 5-30
Mineral filler 5-30
Auxiliary agent 0.3-10
According to mass fraction meter, be preferably made up of following component:
Poly(lactic acid) (PLA) 45
Lined polymethyl ethylene carbonate resin (PPC) 39
Bio-based filler 5
Mineral filler 10
Compatilizer 0.3
Softening agent 0.7
Wherein, described poly(lactic acid) comprises at least one in PDLA, PLLA, and its weight-average molecular weight is 130000-180000, and melting index is 3-10g/10min;
The weight-average molecular weight of described lined polymethyl ethylene carbonate resin is 90000-180000;
Described bio-based filler is at least one in W-Gum, thermoplastic starch, 400-600 order wood powder, 400-500 order bamboo fibers, 300-500 order powdered rice hulls, 300-400 order Mierocrystalline cellulose;
Described is at least one in 650-1000 order talcum powder, 500-1000 order calcium carbonate, 800 order mica powders, 600 order potter's clay, the polynite of 600-1000 order without based filler;
Described auxiliary agent mainly comprises: compatilizer, oxidation inhibitor, softening agent, thermo-stabilizer, toughener, toughner; Compatilizer selects maleic anhydride graft compatilizer; Food grade antioxygen 1010 selected by oxidation inhibitor; Epoxy soybean oil series selected by softening agent, and oxirane value is greater than 6.0%, adds requirement and meet European EN13432 standard.
Take PLA/PBAT as a preparation method for the full-biodegradable material of base-material, comprise the following steps:
1) by polylactic resin and the process of lined polymethyl ethylene carbonate resin drying, its water content≤200PPM is made;
2) accurately take the raw materials such as poly(lactic acid), lined polymethyl ethylene carbonate resin, bio-based filler, mineral filler, auxiliary agent, added in high mixer and fully mix;
3) material mixed is extruded through twin screw extruder obtain full-biodegradable material.
Wherein, extruder screw rotating speed controls at 100-300r/min;
Extruder screw each warm area temperature arranges as follows:
| One district's (DEG C) | Two districts' (DEG C) | Three districts' (DEG C) | Four districts' (DEG C) | Five districts' (DEG C) | Six districts' (DEG C) | Seven districts' (DEG C) | Eight districts' (DEG C) | Nine districts' (DEG C) | Die head (DEG C) |
| 65-170 | 65- 170 | 70-170 | 90-170 | 100-180 | 110-190 | 110-170 | 100-170 | 100-180 | 120-200 |
When food sanitation condition is permitted, this material can be processed into fruit tray through mold pressing, vegetable dish pallet, and disposable knife and fork etc.
Material of the present invention can 100% complete biodegradable, and its degradation speed controlled at 4-8 month, and its working strength and traditional PP, PE material are close.
Embodiment
Below by specific embodiment technical scheme of the present invention done and further illustrate, but the present invention is not limited to these examples.
A kind of take PLA/PPC as full-biodegradable material of base-material and preparation method thereof, described twin screw extruder, and refer to the twin screw extruder that polymer modification industry is conventional, its screw combinations and length-to-diameter ratio can require according to material modification.
example one
Poly(lactic acid) (PLA) 25 parts, lined polymethyl ethylene carbonate (PPC) 54 parts, thermoplastic starch 10 parts, 10 parts, calcium carbonate, phase solvent 0.3 part, 0.7 part, softening agent, polylactic resin and lined polymethyl ethylene carbonate resin vacuum drying treatment, make its water content≤200PPM, above-mentioned raw materials is added 800r/min in high mixer to mix 10 minutes and make it even, 0.2-0.5mm heavy-gauge sheeting is extruded again, the disintegration degree by plastics under GB GBT19811-2005(composting conditions through twin screw 150r/min) to test its disintegration be 100% after 20 weeks.
example two
Poly(lactic acid) (PLA) 30 parts, lined polymethyl ethylene carbonate (PPC) 49 parts, thermoplastic starch 10 parts, 10 parts, calcium carbonate, compatilizer 0.3 part, 0.7 part, softening agent, polylactic resin and the process of lined polymethyl ethylene carbonate resin drying, make its water content≤200PPM, above-mentioned raw materials is added 800r/min in high mixer to mix 10 minutes and make it even, 0.2-0.5mm heavy-gauge sheeting is extruded again, the disintegration degree by plastics under GB GBT19811-2005(composting conditions through twin screw 150r/min) to test its disintegration be 100% after 20 weeks.
example three
Poly(lactic acid) (PLA) 33 parts, lined polymethyl ethylene carbonate (PPC) 46 parts, thermoplastic starch 10 parts, 10 parts, calcium carbonate, compatilizer 0.3 part, 0.7 part, softening agent, polylactic resin and the process of lined polymethyl ethylene carbonate resin drying, make its water content≤200PPM, above-mentioned raw materials is added 800r/min in high mixer to mix 10 minutes and make it even, 0.2-0.5mm heavy-gauge sheeting is extruded again, the disintegration degree by plastics under GB GBT19811-2005(composting conditions through twin screw 150r/min) to test its disintegration be 100% after 20 weeks.
example four
Poly(lactic acid) (PLA) 40 parts, lined polymethyl ethylene carbonate (PPC) 39 parts, thermoplastic starch 10 parts, 10 parts, calcium carbonate, compatilizer 0.3 part, 0.7 part, softening agent, polylactic resin and the process of lined polymethyl ethylene carbonate resin drying, make its water content≤200PPM, above-mentioned raw materials is added 800r/min in high mixer to mix 10 minutes and make it even, 0.2-0.5mm heavy-gauge sheeting is extruded again, the disintegration degree by plastics under GB GBT19811-2005(composting conditions through twin screw 150r/min) to test its disintegration be 100% after 20 weeks.
example five
Poly(lactic acid) (PLA) 45 parts, lined polymethyl ethylene carbonate (PPC) 34 parts, thermoplastic starch 10 parts, 10 parts, calcium carbonate, compatilizer 0.3 part, 0.7 part, softening agent, polylactic resin and the process of lined polymethyl ethylene carbonate resin drying, make its water content≤200PPM, above-mentioned raw materials is added 800r/min in high mixer to mix 10 minutes and make it even, 0.2-0.5mm heavy-gauge sheeting is extruded again, the disintegration degree by plastics under GB GBT19811-2005(composting conditions through twin screw 150r/min) to test its disintegration be 100% after 20 weeks.
example six
Poly(lactic acid) (PLA) 50 parts, lined polymethyl ethylene carbonate (PPC) 29 parts, thermoplastic starch 10 parts, 10 parts, calcium carbonate, compatilizer 0.3 part, 0.7 part, softening agent.Polylactic resin and the process of lined polymethyl ethylene carbonate resin drying, make its water content≤200PPM, above-mentioned raw materials is added 800r/min in high mixer to mix 10 minutes and make it even, 0.2-0.5mm heavy-gauge sheeting is extruded again, the disintegration degree by plastics under GB GBT19811-2005(composting conditions through twin screw 150r/min) to test its disintegration be 100% after 20 weeks.
As can be seen from Table 1, along with lined polymethyl ethylene carbonate per-cent in the material increases, the tensile strength of material is on a declining curve, and elongation at break is increase trend, and the proportioning of each component in material can be regulated in actual use to meet the service requirements of each based article.
Table 1
| Component | Example one | Example two | Example three | Example four | Example five | Example six |
| PLA（%） | 25 | 30 | 33 | 40 | 45 | 50 |
| PPC（%） | 54 | 49 | 46 | 39 | 34 | 29 |
| Thermoplastic starch (%) | 10 | 10 | 10 | 10 | 10 | 10 |
| Calcium carbonate (%) | 10 | 10 | 10 | 10 | 10 | 10 |
| Auxiliary agent (%) | 1 | 1 | 1 | 1 | 1 | 1 |
| Tensile strength (MPa) | 6.3 | 9.4 | 11.2 | 12.1 | 15.8 | 21.3 |
| Shock strength (MPa) | 19.1 | 16.3 | 14.2 | 13.5 | 12.7 | 8.4 |
Claims (10)
1. be a full-biodegradable material for base-material with PLA/PPC, it is characterized in that, according to mass fraction meter, be made up of following component:
Poly(lactic acid) (PLA) 5-60
Lined polymethyl ethylene carbonate resin (PPC) 10-60
Bio-based filler 5-30
Mineral filler 5-30
Auxiliary agent 0.3-10.
2. according to claim 1 a kind of take PLA/PPC as the full-biodegradable material of base-material, it is characterized in that, according to mass fraction meter, be preferably made up of following component:
Poly(lactic acid) (PLA) 45
Lined polymethyl ethylene carbonate resin (PPC) 39
Bio-based filler 5
Mineral filler 10
Compatilizer 0.3
Softening agent 0.7.
3. according to claim 1 a kind of take PLA/PPC as the full-biodegradable material of base-material, it is characterized in that, described poly(lactic acid) comprises at least one in PDLA, PLLA, and its weight-average molecular weight is 130000-180000, and melting index is 3-10g/10min.
4. according to claim 1 a kind of take PLA/PPC as the full-biodegradable material of base-material, it is characterized in that, the weight-average molecular weight of described lined polymethyl ethylene carbonate resin is 90000-180000.
5. according to claim 1 a kind of take PLA/PPC as the full-biodegradable material of base-material, it is characterized in that, described bio-based filler is at least one in W-Gum, thermoplastic starch, 400-600 order wood powder, 400-500 order bamboo fibers, 300-500 order powdered rice hulls, 300-400 order Mierocrystalline cellulose.
6. according to claim 1 a kind of take PLA/PPC as the full-biodegradable material of base-material, it is characterized in that, described is at least one in 650-1000 order talcum powder, 500-1000 order calcium carbonate, 800 order mica powders, 600 order potter's clay, the polynite of 600-1000 order without based filler.
7. according to claim 1 a kind of take PLA/PPC as the full-biodegradable material of base-material, it is characterized in that, described auxiliary agent mainly comprises: compatilizer, oxidation inhibitor, softening agent, thermo-stabilizer, toughener, toughner; Compatilizer selects maleic anhydride graft compatilizer; Food grade antioxygen 1010 selected by oxidation inhibitor; Epoxy soybean oil series selected by softening agent, and oxirane value is greater than 6.0%, adds requirement and meet European EN13432 standard.
8. be a preparation method for the full-biodegradable material of base-material with PLA/PPC, it is characterized in that, comprise the following steps:
1) by polylactic resin and the process of lined polymethyl ethylene carbonate resin drying, its water content≤200PPM is made;
2) accurately take the raw materials such as poly(lactic acid), lined polymethyl ethylene carbonate resin, bio-based filler, mineral filler, auxiliary agent, added in high mixer and fully mix;
3) material mixed is extruded through twin screw extruder obtain full-biodegradable material.
9. according to claim 8 a kind of take PLA/PPC as the preparation method of the full-biodegradable material of base-material, it is characterized in that, in step 3), extruder screw rotating speed controls at 100-300r/min.
10. according to claim 8 a kind of take PLA/PPC as the preparation method of the full-biodegradable material of base-material, it is characterized in that, extruder screw each warm area temperature arranges as follows:
。
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107650360A (en) * | 2017-09-27 | 2018-02-02 | 华南理工大学 | A kind of degradable poly methyl ethylene carbonate base microbedding coextruding composite material and preparation method thereof |
| CN111117276A (en) * | 2019-12-28 | 2020-05-08 | 杨永根 | Material for manufacturing wooden door and preparation method thereof |
| CN113185824A (en) * | 2021-05-27 | 2021-07-30 | 苏州中达航材料科技有限公司 | Special full-biodegradable high-strength polylactic acid-based injection molding material and preparation method thereof |
| CN113278272A (en) * | 2021-06-04 | 2021-08-20 | 四川宽窄纸品有限责任公司 | Plant cellulose-based full-biodegradable material and preparation method thereof |
| CN113861643A (en) * | 2021-10-09 | 2021-12-31 | 海信容声(广东)冰箱有限公司 | High-barrier biodegradable material and preparation method and application thereof |
| CN114133717A (en) * | 2021-11-30 | 2022-03-04 | 广东国立科技股份有限公司 | Bamboo powder filled biodegradable material and preparation method thereof |
| CN114989581A (en) * | 2022-04-24 | 2022-09-02 | 宁波能之光新材料科技股份有限公司 | Biodegradable polylactic acid foaming particle and preparation method thereof |
| CN115044182A (en) * | 2022-06-06 | 2022-09-13 | 广东汇齐新材料有限公司 | Degradable bio-based moisture-permeable waterproof film and preparation method thereof |
| CN115109397A (en) * | 2022-06-24 | 2022-09-27 | 常州博疆新材料科技有限公司 | Full-biodegradable heat shrinkable film and preparation method thereof |
| CN115368700A (en) * | 2022-09-30 | 2022-11-22 | 长春工业大学 | Low-cost biodegradable PPC composition and preparation method thereof |
| CN116535834A (en) * | 2023-05-16 | 2023-08-04 | 东莞市普祥包装制品有限公司 | Degradable plastic-releasing sheet, preparation method thereof and plastic-absorbing product |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107650360A (en) * | 2017-09-27 | 2018-02-02 | 华南理工大学 | A kind of degradable poly methyl ethylene carbonate base microbedding coextruding composite material and preparation method thereof |
| CN111117276A (en) * | 2019-12-28 | 2020-05-08 | 杨永根 | Material for manufacturing wooden door and preparation method thereof |
| CN113185824A (en) * | 2021-05-27 | 2021-07-30 | 苏州中达航材料科技有限公司 | Special full-biodegradable high-strength polylactic acid-based injection molding material and preparation method thereof |
| CN113278272A (en) * | 2021-06-04 | 2021-08-20 | 四川宽窄纸品有限责任公司 | Plant cellulose-based full-biodegradable material and preparation method thereof |
| CN113861643A (en) * | 2021-10-09 | 2021-12-31 | 海信容声(广东)冰箱有限公司 | High-barrier biodegradable material and preparation method and application thereof |
| CN114133717A (en) * | 2021-11-30 | 2022-03-04 | 广东国立科技股份有限公司 | Bamboo powder filled biodegradable material and preparation method thereof |
| CN114989581A (en) * | 2022-04-24 | 2022-09-02 | 宁波能之光新材料科技股份有限公司 | Biodegradable polylactic acid foaming particle and preparation method thereof |
| CN114989581B (en) * | 2022-04-24 | 2024-04-05 | 宁波能之光新材料科技股份有限公司 | Biodegradable polylactic acid foaming particle and preparation method thereof |
| CN115044182A (en) * | 2022-06-06 | 2022-09-13 | 广东汇齐新材料有限公司 | Degradable bio-based moisture-permeable waterproof film and preparation method thereof |
| CN115109397A (en) * | 2022-06-24 | 2022-09-27 | 常州博疆新材料科技有限公司 | Full-biodegradable heat shrinkable film and preparation method thereof |
| CN115368700A (en) * | 2022-09-30 | 2022-11-22 | 长春工业大学 | Low-cost biodegradable PPC composition and preparation method thereof |
| CN116535834A (en) * | 2023-05-16 | 2023-08-04 | 东莞市普祥包装制品有限公司 | Degradable plastic-releasing sheet, preparation method thereof and plastic-absorbing product |
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