CN106800757A - High-toughness polylactic acid film master batch and preparation method thereof - Google Patents
High-toughness polylactic acid film master batch and preparation method thereof Download PDFInfo
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- CN106800757A CN106800757A CN201710072960.2A CN201710072960A CN106800757A CN 106800757 A CN106800757 A CN 106800757A CN 201710072960 A CN201710072960 A CN 201710072960A CN 106800757 A CN106800757 A CN 106800757A
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
The present invention relates to the modified field of PLA (PLA), and in particular to a kind of high-toughness polylactic acid film master batch and preparation method thereof.Described high-toughness polylactic acid film master batch, is made up of the raw material of following mass percent：PLA 85~95%；Modified SEBS 5~15%, described modified SEBS is obtained by SEBS grafting GMA；Its preparation method is：Modified SEBS and PLA are placed in melting extrusion in parallel dual-screw extruding machine, pelletizing, high-toughness polylactic acid film master batch is obtained.High-toughness polylactic acid film master batch of the present invention effectively increases the toughness of traditional PLA, expands the range of application of poly-lactic acid material；Described preparation method, process is simple, it is easy to accomplish.
Description
Technical field
The present invention relates to the modified field of PLA (PLA), and in particular to a kind of high-toughness polylactic acid film master batch and its system
Preparation Method.
Background technology
PLA is with the organic waste such as the natural plants such as corn, wheat, potato, beet and its stem, leaf, root as former
Material, fermented to be polymerized, discarded PLA manufactured goods can be degradable into carbon dioxide and water under field conditions (factors), lays equal stress on
Newly enter ecological circulation, its intermediates is also the metabolite of human normal, in the absence of the hidden danger of toxic and side effect, because
This, PLA is a kind of aliphatic polyester series macromolecular material with excellent biocompatibility and degradability.And PLA
Also there is good biocompatibility, ventilative, transparent, mechanical performance and physical property are good, and plasticity is strong, therefore, PLA
It is one of very promising renewable polymeric materials.
However, existing poly-lactic acid material lacks flexibility and pliability, impact strength is poor, significantly limit PLA
Application.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of high-toughness polylactic acid film master batch, expand poly-
The range of application of lactate material, present invention simultaneously provides its preparation method, process is simple, is easily achieved.
High-toughness polylactic acid film master batch of the present invention, is made up of the raw material of following mass percent：
PLA 85~95%；
Modified SEBS 5~15%.
Wherein：
Described modified SEBS is obtained by SEBS grafting GMA.Described modified SEBS and PLA have good compatible
Property, after PLA melting extrusion, the flexibility and toughness of PLA can be increased.
Described GMA (GMA) contains double bond and epoxy radicals, and it is anti-that double bond occurs grafting with SEBS
Should；Epoxy radicals can be reacted with PLA, and connection bridge is served as between SEBS and PLA, play a part of increase-volume, so that
Increase the toughness of PLA.
The preparation method of described modified SEBS is as follows：
(1) SEBS, GMA are well mixed with initiator, obtain compound；
(2) step (1) gained compound is placed in melting extrusion in parallel dual-screw extruding machine, pelletizing, obtains modified SEBS.
Described SEBS is that, with polystyrene as end segment, being hydrogenated with the ethylene-butene copolymer for obtaining with polybutadiene is
The linear three block copolymer of intermediate elastomeric block.
The quality of described GMA is the 1~5% of SEBS mass.
The quality of described initiator is the 10~17% of GMA mass.
Described initiator is cumyl peroxide (DCP).
In step (2), described parallel dual-screw extruding machine expressing technique condition is：One 170 ± 10 DEG C of area, two areas 170
± 10 DEG C, 170 ± 10 DEG C of 3rd area, 180 ± 10 DEG C of 4th area, 180 ± 10 DEG C of 5th area, 180 ± 10 DEG C of 6th area, 180 ± 10 DEG C of 7th area,
Eight 185 ± 10 DEG C of areas, 185 ± 10 DEG C of 9th area, 185 ± 10 DEG C of head, 60 ± 10r/min of engine speed, feeding rotating speed 30 ±
10r/min, using water cooling bracing pelletizing.
The preparation method of described high-toughness polylactic acid film master batch, parallel dual-screw is placed in by modified SEBS and PLA
Melting extrusion, pelletizing in extruder, obtain high-toughness polylactic acid film master batch.Wherein, described parallel dual-screw extruding machine extrusion
Process conditions are：One 230 ± 10 DEG C of area, 230 ± 10 DEG C of 2nd area, 230 ± 10 DEG C of 3rd area, 240 ± 10 DEG C of 4th area, five areas 240 ±
10 DEG C, it is 240 ± 10 DEG C of 6th area, 240 ± 10 DEG C of 7th area, 245 ± 10 DEG C of 8th area, 245 ± 10 DEG C of 9th area, 245 ± 10 DEG C of head, main
Machine 110 ± 20r/min of rotating speed, feeding 50 ± 10r/min of rotating speed, using water cooling bracing pelletizing.
In sum, beneficial effects of the present invention are as follows：
(1) high-toughness polylactic acid film master batch of the present invention effectively increases the toughness of traditional PLA, expands
The range of application of poly-lactic acid material.
(2) preparation method of the present invention, process is simple, it is easy to accomplish.
Specific embodiment
With reference to embodiment, the present invention will be further described.
The all raw materials used in embodiment unless otherwise specified, are purchased in market.
Embodiment 1
High-toughness polylactic acid film master batch described in the present embodiment, is made up of the following raw material：
85kg PLAs, 15kg SEBS, 0.15kg GMA, 0.015kg DCP.
Preparation method is：
(1) SEBS, GMA are well mixed with DCP, obtain compound.
(2) step (1) gained compound is placed in melting extrusion in parallel dual-screw extruding machine, pelletizing, obtains modified SEBS.
Parallel dual-screw extruding machine expressing technique condition is：One 170 ± 10 DEG C of area, 170 ± 10 DEG C of 2nd area, 170 ± 10 DEG C of 3rd area, 4th area
180 ± 10 DEG C, 180 ± 10 DEG C of 5th area, 180 ± 10 DEG C of 6th area, 180 ± 10 DEG C of 7th area, 185 ± 10 DEG C of 8th area, nine areas 185 ± 10
DEG C, 185 ± 10 DEG C of head, 60 ± 10r/min of engine speed, feeding 30 ± 10r/min of rotating speed, using water cooling bracing pelletizing.
(3) step (2) gained modified SEBS is placed in melting extrusion in parallel dual-screw extruding machine, pelletizing with PLA,
Obtain high-toughness polylactic acid film master batch.Parallel dual-screw extruding machine expressing technique condition is：One 230 ± 10 DEG C of area, two areas 230 ±
10 DEG C, 230 ± 10 DEG C of 3rd area, 240 ± 10 DEG C of 4th area, 240 ± 10 DEG C of 5th area, 240 ± 10 DEG C of 6th area, 240 ± 10 DEG C of 7th area, eight
245 ± 10 DEG C of area, 245 ± 10 DEG C of 9th area, 245 ± 10 DEG C of head, 110 ± 20r/min of engine speed, 50 ± 10r/ of feeding rotating speed
Min, using water cooling bracing pelletizing.
Embodiment 2
High-toughness polylactic acid film master batch described in the present embodiment, is made up of the following raw material：
90kg PLAs, 10kg SEBS, 0.3kg GMA, 0.045kg DCP.
Preparation method is：
(1) SEBS, GMA are well mixed with DCP, obtain compound.
(2) step (1) gained compound is placed in melting extrusion in parallel dual-screw extruding machine, pelletizing, obtains modified SEBS.
Parallel dual-screw extruding machine expressing technique condition is：One 170 ± 10 DEG C of area, 170 ± 10 DEG C of 2nd area, 170 ± 10 DEG C of 3rd area, 4th area
180 ± 10 DEG C, 180 ± 10 DEG C of 5th area, 180 ± 10 DEG C of 6th area, 180 ± 10 DEG C of 7th area, 185 ± 10 DEG C of 8th area, nine areas 185 ± 10
DEG C, 185 ± 10 DEG C of head, 60 ± 10r/min of engine speed, feeding 30 ± 10r/min of rotating speed, using water cooling bracing pelletizing.
(3) step (2) gained modified SEBS is placed in melting extrusion in parallel dual-screw extruding machine, pelletizing with PLA,
Obtain high-toughness polylactic acid film master batch.Parallel dual-screw extruding machine expressing technique condition is：One 230 ± 10 DEG C of area, two areas 230 ±
10 DEG C, 230 ± 10 DEG C of 3rd area, 240 ± 10 DEG C of 4th area, 240 ± 10 DEG C of 5th area, 240 ± 10 DEG C of 6th area, 240 ± 10 DEG C of 7th area, eight
245 ± 10 DEG C of area, 245 ± 10 DEG C of 9th area, 245 ± 10 DEG C of head, 110 ± 20r/min of engine speed, 50 ± 10r/ of feeding rotating speed
Min, using water cooling bracing pelletizing.
Embodiment 3
High-toughness polylactic acid film master batch described in the present embodiment, is made up of the following raw material：
95kg PLAs, 5kg SEBS, 0.25kg GMA, 0.042kg DCP.
Preparation method is：
(1) SEBS, GMA are well mixed with DCP, obtain compound.
(2) step (1) gained compound is placed in melting extrusion in parallel dual-screw extruding machine, pelletizing, obtains modified SEBS.
Parallel dual-screw extruding machine expressing technique condition is：One 170 ± 10 DEG C of area, 170 ± 10 DEG C of 2nd area, 170 ± 10 DEG C of 3rd area, 4th area
180 ± 10 DEG C, 180 ± 10 DEG C of 5th area, 180 ± 10 DEG C of 6th area, 180 ± 10 DEG C of 7th area, 185 ± 10 DEG C of 8th area, nine areas 185 ± 10
DEG C, 185 ± 10 DEG C of head, 60 ± 10r/min of engine speed, feeding 30 ± 10r/min of rotating speed, using water cooling bracing pelletizing.
(3) step (2) gained modified SEBS is placed in melting extrusion in parallel dual-screw extruding machine, pelletizing with PLA,
Obtain high-toughness polylactic acid film master batch.Parallel dual-screw extruding machine expressing technique condition is：One 230 ± 10 DEG C of area, two areas 230 ±
10 DEG C, 230 ± 10 DEG C of 3rd area, 240 ± 10 DEG C of 4th area, 240 ± 10 DEG C of 5th area, 240 ± 10 DEG C of 6th area, 240 ± 10 DEG C of 7th area, eight
245 ± 10 DEG C of area, 245 ± 10 DEG C of 9th area, 245 ± 10 DEG C of head, 110 ± 20r/min of engine speed, 50 ± 10r/ of feeding rotating speed
Min, using water cooling bracing pelletizing.
High-toughness polylactic acid film master batch obtained in embodiment 1-3 and unmodified poly-lactic acid material are carried out into performance survey respectively
Examination, test data is shown in Table 1.
The performance test knot of high-toughness polylactic acid film master batch obtained in the embodiment 1-3 of table 1 and unmodified poly-lactic acid material
Really
| Detection project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Unmodified PLA |
| Yield strength (MPa) | 13.2 | 14.4 | 17.8 | 49 |
| Bending strength (MPa) | 16.8 | 18.1 | 23.5 | 70 |
| 43.9 | 38.2 | 25.6 | 5 | |
| 14.8 | 13.4 | 8.1 | 2.6 |
The above, is only the embodiment of the present invention, not does any limitation to technical scope of the invention, therefore every
According to technical spirit of the invention to any trickle amendment made for any of the above embodiments, equivalent variations and modification, this is still fallen within
In the range of inventive technique scheme.
Claims (10)
1. a kind of high-toughness polylactic acid film master batch, it is characterised in that：It is made up of the raw material of following mass percent：
PLA 85~95%；
Modified SEBS 5~15%.
2. high-toughness polylactic acid film master batch according to claim 1, it is characterised in that：Described modified SEBS is by SEBS
Grafting GMA is obtained.
3. high-toughness polylactic acid film master batch according to claim 1, it is characterised in that：The preparation of described modified SEBS
Method is as follows：
(1) SEBS, GMA are well mixed with initiator, obtain compound；
(2) step (1) gained compound is placed in melting extrusion in parallel dual-screw extruding machine, pelletizing, obtains modified SEBS.
4. high-toughness polylactic acid film master batch according to claim 3, it is characterised in that：Described SEBS is with polyphenyl second
Alkene is end segment, is total to as the linear three block of intermediate elastomeric block with the ethylene-butene copolymer that polybutadiene hydrogenation is obtained
Polymers.
5. high-toughness polylactic acid film master batch according to claim 3, it is characterised in that：The quality of described GMA is
The 1~5% of SEBS mass.
6. high-toughness polylactic acid film master batch according to claim 3, it is characterised in that：The quality of described initiator is
The 10~17% of GMA mass.
7. high-toughness polylactic acid film master batch according to claim 3, it is characterised in that：Described initiator is peroxidating
Diisopropylbenzene (DIPB).
8. high-toughness polylactic acid film master batch according to claim 3, it is characterised in that：Described Co rotating Twin Screw Extrusion
Machine expressing technique condition is：One 170 ± 10 DEG C of area, 170 ± 10 DEG C of 2nd area, 170 ± 10 DEG C of 3rd area, 180 ± 10 DEG C of 4th area, 5th area
180 ± 10 DEG C, 180 ± 10 DEG C of 6th area, 180 ± 10 DEG C of 7th area, 185 ± 10 DEG C of 8th area, 185 ± 10 DEG C of 9th area, head 185 ± 10
DEG C, 60 ± 10r/min of engine speed, feeding 30 ± 10r/min of rotating speed, using water cooling bracing pelletizing.
9. the preparation method of the high-toughness polylactic acid film master batch described in a kind of claim 1, it is characterised in that：By modified SEBS
Melting extrusion in parallel dual-screw extruding machine, pelletizing are placed in PLA, high-toughness polylactic acid film master batch is obtained.
10. the preparation method of high-toughness polylactic acid film master batch according to claim 9, it is characterised in that：Described is same
It is to double screw extruder expressing technique condition：One 230 ± 10 DEG C of area, 230 ± 10 DEG C of 2nd area, 230 ± 10 DEG C of 3rd area, 4th area
240 ± 10 DEG C, 240 ± 10 DEG C of 5th area, 240 ± 10 DEG C of 6th area, 240 ± 10 DEG C of 7th area, 245 ± 10 DEG C of 8th area, nine areas 245 ± 10
DEG C, 245 ± 10 DEG C of head, 110 ± 20r/min of engine speed, feeding 50 ± 10r/min of rotating speed, using water cooling bracing pelletizing.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111789285A (en) * | 2020-06-07 | 2020-10-20 | 湖北中烟工业有限责任公司 | Preparation method of polylactic acid cooling modified tow filter stick |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101143962A (en) * | 2006-09-15 | 2008-03-19 | 奇钛科技股份有限公司 | Biodegradable resin composition for modifying toughness and heat resistance and preparation method thereof |
| CN101225174A (en) * | 2007-12-13 | 2008-07-23 | 上海交通大学 | Thermal synthetic preparation method of SEBS-PLA branched copolymer solvent |
| US20100323182A1 (en) * | 2009-06-17 | 2010-12-23 | Toyota Boshoku Kabushiki Kaisha | Interior material for vehicle |
| CN102408688A (en) * | 2010-09-26 | 2012-04-11 | 比亚迪股份有限公司 | Polylactic acid composite material and preparation method thereof |
| JP2014227470A (en) * | 2013-05-23 | 2014-12-08 | ユニチカ株式会社 | Polylactic acid-based resin composition |
| CN104974487A (en) * | 2014-04-12 | 2015-10-14 | 四川鑫达企业集团有限公司 | Preparation method of high-toughness polylactic acid-based composite material |
| CN105713361A (en) * | 2016-04-05 | 2016-06-29 | 大连理工大学 | Toughening impact-resistant polylactic acid based on epoxidized TPE (thermoplastic elastomer) and preparation method of toughening impact-resistant polylactic acid |
-
2017
- 2017-02-10 CN CN201710072960.2A patent/CN106800757A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101143962A (en) * | 2006-09-15 | 2008-03-19 | 奇钛科技股份有限公司 | Biodegradable resin composition for modifying toughness and heat resistance and preparation method thereof |
| CN101225174A (en) * | 2007-12-13 | 2008-07-23 | 上海交通大学 | Thermal synthetic preparation method of SEBS-PLA branched copolymer solvent |
| US20100323182A1 (en) * | 2009-06-17 | 2010-12-23 | Toyota Boshoku Kabushiki Kaisha | Interior material for vehicle |
| CN102408688A (en) * | 2010-09-26 | 2012-04-11 | 比亚迪股份有限公司 | Polylactic acid composite material and preparation method thereof |
| JP2014227470A (en) * | 2013-05-23 | 2014-12-08 | ユニチカ株式会社 | Polylactic acid-based resin composition |
| CN104974487A (en) * | 2014-04-12 | 2015-10-14 | 四川鑫达企业集团有限公司 | Preparation method of high-toughness polylactic acid-based composite material |
| CN105713361A (en) * | 2016-04-05 | 2016-06-29 | 大连理工大学 | Toughening impact-resistant polylactic acid based on epoxidized TPE (thermoplastic elastomer) and preparation method of toughening impact-resistant polylactic acid |
Non-Patent Citations (4)
| Title |
|---|
| 刘密密，等: "SEBS-g-MAH增韧聚乳酸的性能研究", 《中国塑料》 * |
| 刘建华，等: "《材料成型工艺基础》", 28 February 2016, 西安电子科技大学出版社 * |
| 张袁松主编: "《新型纤维材料概论》", 31 March 2012, 西南师范大学出版社 * |
| 王小兰，等: "GMA接枝SEBS及其对PA6的改性及增容", 《合成树脂及塑料》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111789285A (en) * | 2020-06-07 | 2020-10-20 | 湖北中烟工业有限责任公司 | Preparation method of polylactic acid cooling modified tow filter stick |
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Application publication date: 20170606 |