CN109401244A - A kind of modified polylactic acid material - Google Patents
A kind of modified polylactic acid material Download PDFInfo
- Publication number
- CN109401244A CN109401244A CN201811266007.2A CN201811266007A CN109401244A CN 109401244 A CN109401244 A CN 109401244A CN 201811266007 A CN201811266007 A CN 201811266007A CN 109401244 A CN109401244 A CN 109401244A
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- China
- Prior art keywords
- polylactic acid
- acid material
- parts
- modified polylactic
- auxiliary agents
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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
-
- 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
- C08L2205/06—Polymer mixtures characterised by other features having improved processability or containing aids for moulding methods
Abstract
The invention discloses a kind of modified polylactic acid materials, including polylactic resin, toughener and other auxiliary agents；The parts by weight are 100 parts of polylactic resin, 2~20 parts of toughener, 3~8 parts of other auxiliary agents；The polylactic resin is preferably l-lactic acid；The polylactic resin relative molecular weight is 5~200,000；The toughener is at least one of methyl vinyl silicone rubber, fluorubber, ethylene-methyl acrylate；Other auxiliary agents are at least one of antioxidant, anti-hydrolysis agent, compatilizer.Modified polylactic acid material prepared by the present invention solves the lower disadvantage of brittleness existing for existing polylactic acid, poor toughness, impact strength, has superhigh tenacity, nontoxic, odorlessness, pollution-free, the high performance of safety coefficient, is suitable for a variety of moulding process；Waste material produced during the preparation process can complete recovery and reusing and recycling, not only reduce cost, and improve resource utilization.
Description
Technical field
The present invention relates to technical field of polymer materials, more particularly, to a kind of modified polylactic acid material.
Background technique
With the raising of environmental consciousness, the brought environmental pollution of petroleum base class plastic product, ecological disruption attract attention, people
Seek the renewable class green material of alternative petroleum base class plastics.Biological material is because of its source biodegradable, decomposition
Afterwards product environment object will not be polluted and and enter people sight.Polylactic acid (PLA) is used as bio-based materials, is a kind of
Thermoplastic aliphatic polyester has complete biodegradable ability, from a wealth of sources, carbon dioxide and water is generated after decomposition, to ring
Border is pollution-free, realizes recycling for material, meets the theory of sustainable development, it can be achieved that people are to natural, green, environmental protection
Serious hope.The good mechanical performance of polylactic acid, can be with the plastics such as polyethylene terephthalate (PET), polystyrene (PS)
Similar, alternative petroleum base class general-purpose plastics is in multiple fields application；A variety of moulding process can be used in it, and (injection molding squeezes out, spinning
Deng) be process.Polylactic acid or polylactic acid and other materials (starch, general-purpose plastics, natural fiber, nanoparticle etc.) processing are made
Standby composite material is widely used in biomedicine field, packaging field, automobile industry, electronics industry etc., especially in recent years
Polylactic acid is widely used in fused glass pellet (FDM), 3D printing field；Polylactic acid is counted as the following most possible substitution
One of petroleum base class material, material most with prospects.
However, the disadvantages of existing brittleness of polylactic acid itself, poor toughness, lower impact strength, limit its aviation,
The application in the fields such as electronics, automobile and fused glass pellet (FDM), 3D printing.It, can be by using altogether to make up these deficiencies
The means polydactyl acids such as mixed, copolymerization, crosslinking, improve the toughness and other mechanical properties, processing performance of polylactic acid, expand it and answer
With range, to contribute share for the strategy of sustainable development, environmental protection, energy-saving and emission-reduction.Therefore, to the toughening modifying of polylactic acid
The always important subject of its marketization, developing, there is the environmentally protective polylactic acid of higher toughness to seem especially urgent.
Summary of the invention
The present invention solves the disadvantages of brittleness existing for existing polylactic acid, poor toughness, lower impact strength, limit its
The deficiency of the application in fields such as aviation, electronics, automobile and fused glass pellet (FDM), 3D printing, the present invention pass through the side that is blended
Formula assigns polylactic acid blend material superhigh tenacity, provides a kind of modified polylactic acid material.
The technical scheme is that
A kind of modified polylactic acid material, including polylactic resin, toughener and other auxiliary agents；The parts by weight are poly- cream
100 parts of acid resin, 2~20 parts of toughener, 3~8 parts of other auxiliary agents.
Further, the polylactic resin is preferably l-lactic acid.
Further, the polylactic resin relative molecular weight is 5~200,000.
Further, the polylactic resin is at 190 DEG C, and melt flow index is 10~40g/ under conditions of 2.16kgf
10min。
Further, the polylactic resin is at 190 DEG C, under conditions of 2.16kgf melt flow index be preferably 15~
25g/10min。
Further, the toughener is methyl vinyl silicone rubber (MVQ), fluorubber, ethylene-methyl acrylate
At least one of (EMA).
Further, other auxiliary agents include at least one of antioxidant, anti-hydrolysis agent, compatilizer.
Further, other auxiliary agents are preferably oxidant, anti-hydrolysis agent, compatilizer while using.
A kind of modified polylactic acid material preparation method, comprising the following steps:
Dry raw material: by polylactic acid, methyl vinyl silicone rubber, vulcanizing agent (DCP), fluorubber, ethylene-acrylic acid first
Ester is dried in vacuo；
It is blended: all material being proportionally added into mixed at high speed blender and is stirred；
Molding: the mixture stirred evenly is squeezed out by double screw extruder.Extruded material successively through tie rod, cooling,
Novel modified polylactic acid material is made in drying, granulating working procedure.
Further, the extruder temperature be followed successively by 160~165 DEG C, 170~175 DEG C, 180~185 DEG C, 190~
195 DEG C, 195~200 DEG C and 190~195 DEG C.
Further, the screw speed of the double screw extruder is 40~100rpm.
Further, the rate of feeding of the double screw extruder is 5~15rpm.
Compared with prior art, beneficial effects of the present invention are as follows:
(1) modified polylactic acid material prepared by the present invention has superhigh tenacity, significantly improves the crisp of poly-lactic acid material
The shortcomings that property, poor toughness, wherein impact strength may be up to 84KJ/m2, elongation at break 240%.
(2) modified polylactic acid material prepared by the present invention has nontoxic, odorlessness, pollution-free, the performances such as safety coefficient height；
Suitable for a variety of moulding process, it is particularly suitable for fused glass pellet (FDM) and 3D printer；Waste material can complete reclaiming benefit
With not only reducing cost, also improve resource utilization.
(3) product of the present invention preparation process flow is short, equipment requirement is simple, manufacturing process is easy, it is easy to operate, do not relate to
And harsh chemical technology operation, it is very suitable for large-scale industrial production.
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, combined with specific embodiments below to this
Invention is described in further detail.In following case study on implementation, experimental method is conventional method unless otherwise specified；All examinations
Agent or raw material can be obtained through commercial channels unless otherwise specified.
Invention is further described in detail combined with specific embodiments below, but not thereby limiting the invention interior
Hold.
1 each component list of table
In above-described embodiment 1 to 10, other auxiliary agents use preferred embodiment, i.e. antioxidant, anti-hydrolysis agent, compatilizer
3 kinds of raw materials all use.
Other auxiliary agents described in example 1 are respectively as follows: tetrapentaerythritol ester and 0.5 part of triphosphite ester mixture, poly- carbonization
1.0 parts of diimine compounds, 0.5 part of single second carbide imine compound, 3.0 parts of maleic anhydride grafting polymer.
Other auxiliary agents described in example 2 are respectively as follows: tetrapentaerythritol ester and 0.5 part of triphosphite ester mixture, poly- carbonization
1.0 parts of diimine compounds, 0.8 part of single second carbide imine compound, by methyl methacrylate, butadiene, styrene copolymerized
3.5 parts of terpolymer made of object copolymerization.
Other auxiliary agents described in example 3 are respectively as follows: tetrapentaerythritol ester and 0.7 part of triphosphite ester mixture, poly- carbonization
1.5 parts of diimine compounds, 0.3 part of single second carbide imine compound, GMA- ethylene-methyl acrylate terpolymer 4.0
Part.
Other auxiliary agents described in example 4 are respectively as follows: tetrapentaerythritol ester and 0.8 part of triphosphite ester mixture, poly- carbonization
0.8 part of diimine compounds, 1.0 parts of single second carbide imine compound, 4.0 parts of maleic anhydride grafting polymer.
Other auxiliary agents described in example 5 are respectively as follows: antioxidant 1010 and compound 0.4 part of the composition of antioxidant 215, poly- carbonization two
0.6 part of group with imine moiety, 1.5 parts of single second carbide imine compound, by methyl methacrylate, butadiene, styrol copolymer
4.0 parts of terpolymer made of copolymerization.
Other auxiliary agents described in example 6 are respectively as follows: antioxidant 1010 and compound 0.6 part of the composition of antioxidant 215, poly- carbonization two
0.5 part of group with imine moiety, 1.2 parts of single second carbide imine compound, 3.5 parts of terpolymer of GMA- ethylene-methyl acrylate.
Other auxiliary agents described in example 7 are respectively as follows: antioxidant 1010 and compound 0.7 part of the composition of antioxidant 215, poly- carbonization two
0.7 part of group with imine moiety, 0.5 part of single second carbide imine compound, 4.0 parts of maleic anhydride grafting polymer.
Other auxiliary agents described in example 8 are respectively as follows: antioxidant 1010 and compound 0.9 part of the composition of antioxidant 215, poly- carbonization two
1.2 parts of group with imine moiety, 0.4 part of single second carbide imine compound, by methyl methacrylate, butadiene, styrol copolymer
4.0 parts of terpolymer made of copolymerization.
Other auxiliary agents described in example 9 are respectively as follows: antioxidant 1010 and compound 1.0 parts of the composition of antioxidant 215, poly- carbonization two
0.5 part of group with imine moiety, 1.5 parts of single second carbide imine compound, 3.0 parts of terpolymer of GMA- ethylene-methyl acrylate.
Other auxiliary agents described in example 10 are respectively as follows: antioxidant 1010 and compound 0.8 part of the composition of antioxidant 215, poly- carbonization
1.0 parts of diimine compounds, 0.8 part of single second carbide imine compound, 3.8 parts of maleic anhydride grafting polymer.
In above-described embodiment 1 to 10, the performance indicator of gained modified material is as shown in table 2.
2 performance indicator list of table
| Performance | Impact strength/KJ/m2 | Elongation at break/% |
| Example 1 | 53 | 150 |
| Example 2 | 58 | 180 |
| Example 3 | 55 | 200 |
| Example 4 | 75 | 200 |
| Example 5 | 78 | 220 |
| Example 6 | 84 | 240 |
| Example 7 | 68 | 205 |
| Example 8 | 72 | 218 |
| Example 9 | 70 | 220 |
| Example 10 | 73 | 230 |
The above are preferred specific implementations of the invention, and the description thereof is more specific and detailed, but can not therefore and
It is interpreted as limitations on the scope of the patent of the present invention.It should be pointed out that for those of ordinary skill in the art, not taking off
Under the premise of from present inventive concept, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.Cause
This, the scope of protection of the patent of the present invention should be based on appended claims.
Claims (10)
1. a kind of modified polylactic acid material, it is characterised in that: including polylactic resin, toughener and other auxiliary agents；The weight
Number is 100 parts of polylactic resin, 2~20 parts of toughener, 3~8 parts of other auxiliary agents.
2. modified polylactic acid material according to claim 1, it is characterised in that: the polylactic resin is preferably left-handed poly-
Lactic acid.
3. modified polylactic acid material according to claim 2, it is characterised in that: the polylactic resin relative molecular weight is
5~200,000.
4. modified polylactic acid material according to claim 3, it is characterised in that: the polylactic resin at 190 DEG C,
Melt flow index is 10~40g/10min under conditions of 2.16kgf.
5. modified polylactic acid material according to claim 1, it is characterised in that: the toughener is methyl ethylene silicon rubber
At least one of glue, fluorubber, ethylene-methyl acrylate.
6. modified polylactic acid material according to claim 1, it is characterised in that: other auxiliary agents include antioxidant,
At least one of anti-hydrolysis agent, compatilizer.
7. a kind of modified polylactic acid material preparation method, which comprises the following steps:
Dry raw material: polylactic acid, methyl vinyl silicone rubber, vulcanizing agent, fluorubber, ethylene-methyl acrylate are carried out true
Sky is dry；
It is blended: all material being proportionally added into mixed at high speed blender and is stirred；
Molding: the mixture stirred evenly is squeezed out by double screw extruder.Extruded material successively through tie rod, cooling, drying,
Novel modified polylactic acid material is made in granulating working procedure.
8. modified polylactic acid material preparation method according to claim 7, it is characterised in that: the extruder temperature is successively
It is 160~165 DEG C, 170~175 DEG C, 180~185 DEG C, 190~195 DEG C, 195~200 DEG C and 190~195 DEG C.
9. modified polylactic acid material preparation method according to claim 8, it is characterised in that: the double screw extruder
Screw speed is 40~100rpm.
10. modified polylactic acid material preparation method according to claim 8, it is characterised in that: the double screw extruder
Rate of feeding be 5~15rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811266007.2A CN109401244A (en) | 2018-10-29 | 2018-10-29 | A kind of modified polylactic acid material |
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| CN201811266007.2A CN109401244A (en) | 2018-10-29 | 2018-10-29 | A kind of modified polylactic acid material |
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| CN109401244A true CN109401244A (en) | 2019-03-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI757603B (en) * | 2019-05-28 | 2022-03-11 | 陳松柏 | Recycling method of polylactic acid products |
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| US20100029803A1 (en) * | 2006-12-15 | 2010-02-04 | Jvs-Polymers Oy | Heterophasic biopolymer composition |
| CN106009680A (en) * | 2016-07-29 | 2016-10-12 | 青岛科技大学 | Silicone rubber/polylactic acid thermoplastic vulcanized rubber and preparation method thereof |
| CN107686638A (en) * | 2017-07-21 | 2018-02-13 | 宁夏共享模具有限公司 | A kind of PLA for 3D printing is material modified and preparation method |
| CN108641318A (en) * | 2018-05-02 | 2018-10-12 | 张家港绿洲新材料科技有限公司 | A kind of polyhydroxycarboxyliacid acid alloy material and preparation method thereof that biology base is degradable |
-
2018
- 2018-10-29 CN CN201811266007.2A patent/CN109401244A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100029803A1 (en) * | 2006-12-15 | 2010-02-04 | Jvs-Polymers Oy | Heterophasic biopolymer composition |
| CN106009680A (en) * | 2016-07-29 | 2016-10-12 | 青岛科技大学 | Silicone rubber/polylactic acid thermoplastic vulcanized rubber and preparation method thereof |
| CN107686638A (en) * | 2017-07-21 | 2018-02-13 | 宁夏共享模具有限公司 | A kind of PLA for 3D printing is material modified and preparation method |
| CN108641318A (en) * | 2018-05-02 | 2018-10-12 | 张家港绿洲新材料科技有限公司 | A kind of polyhydroxycarboxyliacid acid alloy material and preparation method thereof that biology base is degradable |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI757603B (en) * | 2019-05-28 | 2022-03-11 | 陳松柏 | Recycling method of polylactic acid products |
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Application publication date: 20190301 |
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