CN106916422A - A kind of preparation method of high transparency heat resistant polylactic acid-base composite material - Google Patents
A kind of preparation method of high transparency heat resistant polylactic acid-base composite material Download PDFInfo
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- CN106916422A CN106916422A CN201510995641.XA CN201510995641A CN106916422A CN 106916422 A CN106916422 A CN 106916422A CN 201510995641 A CN201510995641 A CN 201510995641A CN 106916422 A CN106916422 A CN 106916422A
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- polylactic acid
- composite material
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- base composite
- pla
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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- 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
- C08K9/00—Use of pretreated ingredients
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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
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/08—Copolymers of styrene
- C08L25/12—Copolymers of styrene with unsaturated nitriles
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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
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- 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)
- Biological Depolymerization Polymers (AREA)
Abstract
The invention discloses a kind of high transparency heat resistant polylactic acid-base composite material, it is made up of by weight following components：10~100 parts of polylactic resin, 20~100 parts of polymethyl methacrylate, 0.01~5 part of nucleator, matrix polylactic resin is well mixed with transparent resin and nucleator by high-speed mixer, uniform pellet is extruded by double screw extruder, material of the present invention is easy to get, simple production process, the effective transparency and heat resistance for improving PLA, blend ties up minimum 60 DEG C of card transition temperature, the transparency of blend is promoted to 90%, bending modulus is promoted to 4800Mpa, the heat resistance for solving PLA is poor, the low problem of transparency, and then PLA has been expanded in automobile, electronics, the application of the numerous areas such as decorate home and construction material.
Description
Technical field
The invention belongs to the field of polymer composite material in material science, it is related to a kind of using transparent resin, nucleator
The method for preparing high transparency, heat resistant polylactic acid-base composite material.PLA based composites according to prepared by the present invention, solve
Traditional PLA vicat temperatures are low, it is transparent unstable the problems such as.Method involved in the present invention is simple to operate, prepare material
Performance controllability is strong, so expanded PLA in numerous areas such as automobile, electronics, decorate home and construction materials.
Suitable for laboratory and enterprise's industrialization production, this material is a kind of high transparency heat resistant polylactic acid-base composite material.
Background technology
With the development of macromolecular material, petroleum base macromolecular material obtains widely should in human lives and work
With.But these material source non-renewable resources, and be difficult to degrade in natural environment, cause the deterioration of the ecological environment and resource
It is in short supply, the strategy of human kind sustainable development is not met, bring harm to the mankind.In recent years, it is from renewable resource
Biodegradation material causes people widely to note.
PLA be with living resources as raw material, by the degradable linear aliphatic adoption ester of chemical synthesis process, it
From renewable resource, with good biocompatibility, degradability, tensile strength higher and modulus of compressibility, therefore it is poly-
Lactic acid is considered as the substitute of petroleum-based plastics：It is applied to general-purpose plastics field, for reducing environmental pollution, saving stone
Oily resource and mitigation global greenhouse effect aspect tool are of great significance.Petroleum resources shortage and environmental pollution seriously promote
The development and application of non-petroleum base degradable green high polymer are entered.PLA is a kind of collection biological degradability, biological absorbable
In the green thermoplastic polyester of one, with preferable mechanical strength, elastic modelling quantity and hot formability, catabolite can penetrate into property
Body metabolism, is widely used in the fields such as medical treatment, pharmacy, agricultural, packing business, service industry, it is considered to be most have so far
The degradable polymer of market potential.However, identical with other macromolecular materials, impact strength lower limit PLA is in boat
It is empty.The application in the fields such as electronics, automobile, for this, environmental protection PLA of the exploitation with higher toughness seems particularly urgent.
The content of the invention
The purpose of the present invention be to solve that PLA heat resistance is poor, transparent unstable properties and one kind for providing prepares height
Transparent heat-resistance polylactic acid modification method
The object of the invention technical solution is realized for PLA heat resistance is poor, transparent unstable properties methods, by poly- breast
Acid resin, transparent resin, nucleator mix and dry in proportion, make the matrix moisture content of dried blend less than 50ppm,
Then blend is molded into by master body using the method for melting extrusion, it is characterised in that the fusing point of transparent resin is at 170 DEG C
Between~250 DEG C, transparent resin consumption accounts for the 20%~100% of blend consumption, 160 DEG C~215 DEG C of melting extrusion temperature.
The component and components by weight percent number of a kind of high transparency heat resistant polylactic acid-base composite material are matched：PLA 10~100
0.01~5 part of part, 20~100 parts of transparent resin and nucleator.
The number-average molecular weight of described PLA is 12~200,000
Described transparent resin is one or more of PMMA, PC and AS, and the addition of elastomer is the 10%-20% of gross mass.
Described transparency and heat-proof polylactic acid-base composite material, what nucleator was chosen is modified extrafine talc powder, substitution dibenzyl
One or more of fork glucitols, two (the 4- tert-butyl groups-benzoic acid) aluminium hydroxides.
Specific embodiment
Embodiment one
100 parts of PLA
Modified extrafine talc powder 0.8
PLA, transparent resin and nucleator are placed in vacuum drying chamber into 80 DEG C first to be vacuum dried 5 hours, and then go water removal
Point, the material that will be mixed is added in double screw extruder by hopper, through melt blending extrusion, water-cooled, air knife cool drying,
Granulation, homogenizing, wherein barrel temperature is set to：170-180 DEG C of leading portion, 190~200 DEG C of stage casing, 200~210 DEG C of back segment, screw rod is long
Compare 35,195~200 DEG C of head temperature, 150~200rmp/min of screw speed in footpath.
Embodiment two
90 parts of PLA
10 parts of AS
0.8 part of modified extrafine talc powder
Process conditions such as embodiment one
Embodiment three
80 parts of PLA
20 parts of AS
0.8 part of modified extrafine talc powder
Process conditions such as embodiment one
Example IV
70 parts of PLA
30 parts of AS
0.8 part of modified extrafine talc powder
Process conditions such as embodiment one
Embodiment five
60 parts of PLA
40 parts of AS
0.8 part of modified extrafine talc powder
Process conditions such as embodiment one
Embodiment six
50 parts of PLA
50 parts of AS
0.8 part of modified extrafine talc powder
Process conditions such as embodiment one
Embodiment seven
40 parts of PLA
60 parts of AS
0.8 part of modified extrafine talc powder
Process conditions such as embodiment one
Embodiment eight
30 parts of PLA
70 parts of AS
0.8 part of modified extrafine talc powder
Process conditions such as embodiment one
Embodiment nine
20 parts of PLA
80 parts of AS
0.8 part of modified extrafine talc powder
Process conditions such as embodiment one
Embodiment ten
100 parts of PMMA
0.8 part of modified extrafine talc powder
Process conditions such as embodiment one
The performance test results
| Test event | Testing standard | Unit | Embodiment one | Embodiment two | Embodiment three | Example IV | Embodiment five |
| Dimension card transition temperature | ISO360 | 60 | 61.8 | 64.7 | 66.4 | 69.2 | |
| Tensile strength | ISO527 | 63.9 | 65.3 | 66.5 | 66.8 | 67.4 | |
| Elongation | ISO527 | % | 2.5 | 2.3 | 2.4 | 2.5 | 2.2 |
| Bending strength | ISO178 | 110.9 | 115.7 | 117.4 | 118.2 | 123.1 | |
| Bending modulus | ISO178 | % | 3546 | 3788 | 3854 | 3960 | 4034 |
| Light transmittance | 70 | 80 | 90 | 90 | 95 | ||
| Test event | Testing standard | Unit | Embodiment six | Embodiment seven | Embodiment eight | Embodiment nine | Embodiment ten |
| Dimension card transition temperature | ISO360 | KJ/m2 | 71 | 72.3 | 75.6 | 77.5 | 110.41 |
| Tensile strength | ISO527 | KJ/m2 | 68.2 | 71.4 | 76.8 | 78.2 | 46.2 |
| Elongation | ISO527 | % | 2.5 | 2.3 | 2.4 | 2.5 | 2.65 |
| Bending strength | ISO178 | KJ/m2 | 129.2 | 131.0 | 121.7 | 119.5 | 115.4 |
| Bending modulus | ISO178 | % | 4539 | 4756 | 4767 | 4811 | 4844 |
| Light transmittance | 94 | 92 | 90 | 90 | 95 |
Claims (5)
1. a kind of high transparency heat resistant polylactic acid-base composite material method, be by adding polymethyl methacrylate, nucleator, with
Polylactic acid blend, its acteristic weight is than formula：PLA:10~100 parts, transparent resin：20~100 parts, nucleator
0.01~5 part.
2. a kind of high transparency heat resistant polylactic acid-base composite material method, described transparency and heat-proof polylactic acid-base composite material, it gathers
The molecular weight of lactic acid resin matrix is chosen for 12 × 106Polylactic resin, account for the 10%~100% of oeverall quality.
3. a kind of high transparency heat resistant polylactic acid-base composite material method, described transparency and heat-proof polylactic acid-base composite material is transparent
What resin was chosen is one or more in PMMA, PS, AS and PC, and the addition of elastomer is the 10%~100% of gross mass.
4. a kind of high transparency heat resistant polylactic acid-base composite material method, described transparency and heat-proof polylactic acid-base composite material, nucleation
What agent was chosen is modified extrafine talc powder, replaces dibenzal sorbitol class, two (the 4- tert-butyl groups-benzoic acid) aluminium hydroxides
One or more.
5. a kind of high transparency heat resistant polylactic acid-base composite material method, described high ductility polylactic acid base complex method, its production
Technique is comprised the following steps：By proportioning by PLA, transparent resin, nucleator by high-speed mixer mixing 3-5 minutes, then
By double screw extruder, the temperature setting of double screw extruder is an area：165~175 DEG C, 2nd area：175~180 DEG C, three
Area：180~190 DEG C, 4th area：180~195 DEG C, 5th area：185~200 DEG C, 6th area：190~205 DEG C, 7th area：195~205
DEG C, 8th area：200~210 DEG C, 9th area：200~210 DEG C, tenth area：200~210 DEG C, head：195~205 DEG C, engine speed
155~255rpm, 8~15rmp of subsidiary engine rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510995641.XA CN106916422A (en) | 2015-12-28 | 2015-12-28 | A kind of preparation method of high transparency heat resistant polylactic acid-base composite material |
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| CN201510995641.XA CN106916422A (en) | 2015-12-28 | 2015-12-28 | A kind of preparation method of high transparency heat resistant polylactic acid-base composite material |
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| CN106916422A true CN106916422A (en) | 2017-07-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019100713A1 (en) * | 2017-11-27 | 2019-05-31 | 金发科技股份有限公司 | Polylactic acid composite material and application thereof |
-
2015
- 2015-12-28 CN CN201510995641.XA patent/CN106916422A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019100713A1 (en) * | 2017-11-27 | 2019-05-31 | 金发科技股份有限公司 | Polylactic acid composite material and application thereof |
| US11530294B2 (en) | 2017-11-27 | 2022-12-20 | Kingfa Sci. & Tech. Co., Ltd. | Polylactic acid composite and use thereof |
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Application publication date: 20170704 |
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