CN106883510A - Polylactic acid poly acrylic composite and its preparation method and application - Google Patents
Polylactic acid poly acrylic composite and its preparation method and application Download PDFInfo
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- CN106883510A CN106883510A CN201710091045.8A CN201710091045A CN106883510A CN 106883510 A CN106883510 A CN 106883510A CN 201710091045 A CN201710091045 A CN 201710091045A CN 106883510 A CN106883510 A CN 106883510A
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- pla
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- 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)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention provides a kind of polylactic acid poly acrylic composite and its preparation method and application.Polylactic acid poly acrylic composite of the invention, including following weight portion composition：PLA：25 40 parts；Polypropylene：60 70 parts；Maleic anhydride：5 10 parts.Polylactic acid poly acrylic composite injection moulding temperature of the invention is low, and with advantages such as environmental protection, odor profiles low, dimensionally stables.
Description
Technical field
The present invention relates to a kind of composite, and in particular to a kind of PLA-PP composite material and preparation method thereof
And application.
Background technology
Polypropylene (abbreviation PP) is that, by a kind of thermoplastic resin of propylene polymerization, it is because with relative density is small, power
Learn the advantages such as performance, heat resistance and electrical insulating property be good and be used widely.At present, the inner and outer decorative parts such as automobile gear shift cover plate lead to
Often by polypropylene injection moulding, injection temperature is 220 DEG C or so.However, being deposited with inner and outer decorative parts of automobile prepared by polypropylene material
With certain odor profiles, defect such as change in size is larger, tensile strength values are relatively low, injection temperature is higher.
It with lactic acid is polymer that main polymerizable raw material is obtained that PLA (abbreviation PLA) is, its production process is pollution-free, produces
Product are biodegradable, are preferable Green Polymer Materials, therefore prepare inner and outer decorative parts of automobile using poly-lactic acid material to be conducive to
Reduce the odor profiles of product.Because PLA is expensive, hardness is bigger and easy embrittlement, be with polylactic acid blend using polymer
The effective way for improve its mechanical property, reduces cost, improving degradation property.Therefore, especially expect a kind of containing PLA
Composite, so that inner and outer decorative parts of automobile environmental protection and with good dimensional stability.
The content of the invention
The present invention provides a kind of PLA-PP composite material and its preparation method and application, and the composite has
The advantages such as environmental protection, odor profiles low and dimensionally stable.
The present invention provides a kind of PLA-PP composite material, including following weight portion composition：
PLA：25-40 parts；
Polypropylene：60-70 parts；
Maleic anhydride：5-10 parts.
Further, PLA-PP composite material of the invention, comprises the following components in parts by weight：
PLA：25-35 parts；
Polypropylene：60-70 parts；
Maleic anhydride：5-10 parts.
In the present invention, the weight average molecular weight of the PLA can be 300,000-50 ten thousand；The polyacrylic Weight-average molecular
Amount can be 600,000-80 ten thousand；Purity >=99% of maleic anhydride.Above-mentioned each composition can be obtained by conventional commercial.
The present invention also provides a kind of preparation method of PLA-PP composite material, including：
The maleic anhydride of the PLA of 25-40 weight portions, the polypropylene of 60-70 weight portions and 5-10 weight portions is mixed
Close uniform, obtain mixed material；
The mixed material is dried, subsequent injection moulding.
Wherein, the dry temperature is 90-110 DEG C, and the dry time is 15-30min.
Further, the condition of the injection moulding is：160-180 DEG C of injection temperature, injection pressure 70-90bar, injection
Time is 8-12s.
Further, the weight average molecular weight of the PLA can be 300,000-50 ten thousand；The polyacrylic weight average molecular weight
Can be 600,000-80 ten thousand；Purity >=99% of maleic anhydride.
The present invention also provides any of the above-described described PLA-PP composite material on inner and outer decorative parts of automobile is prepared
Using.
The present invention also provides a kind of automobile gear shift cover plate, by by any of the above-described described PLA-polypropylene composite materials material
Material is dried, injection moulding is obtained.
Further, the dry temperature is 90-110 DEG C, and the dry time is 15-30min；It is described to be molded into
The condition of type is：160-180 DEG C of injection temperature, injection pressure 70-90bar, injection time is 8-12s.
PLA-PP composite material of the invention is the novel-section of a kind of reproducible " low-carbon (LC), environmental protection, energy-conservation "
Material, it has good mechanics and other performances, particularly tensile strength up to more than 29MPa, can be widely applied in automobile
The fields such as exterior trimming parts.
The preparation technology environmental protection of PLA-PP composite material of the invention, particularly injection temperature is compared with other
PP composite material it is low, 160-180 DEG C of injection temperature can injection moulding, it is achieved thereby that energy-saving equivalent
Really.
The automobile gear shift cover plate prepared using PLA of the present invention-PP composite material, with environmental protection, odor profiles
The advantages such as low, tensile strength is high, dimensionally stable；Wherein, change in size is only ± 0.5 to ± 1, and the dimensional stability of product is excellent
It is different.
Brief description of the drawings
Fig. 1 is the structural representation of automobile gear shift cover plate prepared by the present invention.
Description of reference numerals：
1：Automobile gear shift cover plate.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiments of the invention, to this
Technical scheme in inventive embodiments is clearly and completely described, it is clear that described embodiment is that a part of the invention is real
Example is applied, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
Property work under the premise of the every other embodiment that is obtained, belong to the scope of protection of the invention.
The material of various embodiments of the present invention is as follows：
PLA：Weight average molecular weight is 300,000-50 ten thousand, purchased from Zhejiang Hisun Biomaterials Co., Ltd；
Polypropylene：Weight average molecular weight is 600,000-80 ten thousand, purchased from JinFa Science Co., Ltd；
Maleic anhydride：Purchased from Shanghai traditional Chinese medicines reagent chemical industry, pure, mass content >=99% is analyzed.
Embodiment 1
First, PLA-PP composite material
PLA-the PP composite material of the present embodiment, comprises the following components in parts by weight：
PLA (weight average molecular weight 300,000)：35 parts；
Polypropylene (weight average molecular weight 800,000)：60 parts；
Maleic anhydride：5 parts.
2nd, automobile gear shift cover plate
The preparation method of the automobile gear shift cover plate of the present embodiment is specially：
1st, mix
After each composition in above-mentioned PLA-PP composite material is got the raw materials ready according to respective weight portion, it is well mixed,
Obtain mixing material.
2nd, dry
Above-mentioned mixing material is dried into 30min at 90 DEG C, dry feedstock is obtained.
3rd, injection moulding
Above-mentioned dry feedstock is fitted into the barrel of injection machine, injection temperature be 160 DEG C, injection pressure be 90bar, note
The modeling time is injection moulding under conditions of 8s, obtains automobile gear shift cover plate, and its structure is as shown in Figure 1.
The tensile strength of the automobile gear shift cover plate of above-mentioned preparation is detected using ISO 527-2 standard methods, using BAS-455
Odor profiles, the method detection vapour measured on master body mould using slide measure of standard method detection automobile gear shift cover plate
The change in size of car gearshift cover plate, the results are shown in Table 1.
Embodiment 2
First, PLA-PP composite material
PLA-the PP composite material of the present embodiment, comprises the following components in parts by weight：
PLA (weight average molecular weight 500,000)：25 parts；
Polypropylene (weight average molecular weight 600,000)：65 parts；
Maleic anhydride：10 parts.
2nd, automobile gear shift cover plate
The preparation method of the automobile gear shift cover plate of the present embodiment is specially：
1st, mix
After each composition in above-mentioned PLA-PP composite material is got the raw materials ready according to respective weight portion, it is well mixed,
Obtain mixing material.
2nd, dry
Above-mentioned mixing material is dried into 25min at 100 DEG C, dry feedstock is obtained.
3rd, injection moulding
Above-mentioned dry feedstock is fitted into the barrel of injection machine, injection temperature be 180 DEG C, injection pressure be 70bar, note
The modeling time is injection moulding under conditions of 10s, obtains automobile gear shift cover plate.
The tensile strength of automobile gear shift cover plate, odor profiles and change in size are detected using the method for embodiment 1 respectively, is as a result seen
Table 1.
Embodiment 3
First, PLA-PP composite material
PLA-the PP composite material of the present embodiment, comprises the following components in parts by weight：
PLA (weight average molecular weight 400,000)：25 parts；
Polypropylene (weight average molecular weight 700,000)：70 parts；
Maleic anhydride：5 parts.
2nd, automobile gear shift cover plate
The preparation method of the automobile gear shift cover plate of the present embodiment is specially：
1st, mix
After each composition in above-mentioned PLA-PP composite material is got the raw materials ready according to respective weight portion, it is well mixed,
Obtain mixing material.
2nd, dry
Above-mentioned mixing material is dried into 15min at 110 DEG C, dry feedstock is obtained.
3rd, injection moulding
Above-mentioned dry feedstock is fitted into the barrel of injection machine, injection temperature be 170 DEG C, injection pressure be 80bar, note
The modeling time is injection moulding under conditions of 12s, obtains automobile gear shift cover plate.
The tensile strength of automobile gear shift cover plate, odor profiles and change in size are detected using the method for embodiment 1 respectively, is as a result seen
Table 1.
Embodiment 4
First, PLA-PP composite material
PLA-the PP composite material of the present embodiment, comprises the following components in parts by weight：
PLA (weight average molecular weight 300,000)：30 parts；
Polypropylene (weight average molecular weight 600,000)：60 parts；
Maleic anhydride：10 parts.
2nd, automobile gear shift cover plate
The preparation method of the automobile gear shift cover plate of the present embodiment is specially：
1st, mix
After each composition in above-mentioned PLA-PP composite material is got the raw materials ready according to respective weight portion, it is well mixed,
Obtain mixing material.
2nd, dry
Above-mentioned mixing material is dried into 25min at 100 DEG C, dry feedstock is obtained.
3rd, injection moulding
Above-mentioned dry feedstock is fitted into the barrel of injection machine, injection temperature be 170 DEG C, injection pressure be 80bar, note
The modeling time is injection moulding under conditions of 10s, obtains automobile gear shift cover plate.
The tensile strength of automobile gear shift cover plate, odor profiles and change in size are detected using the method for embodiment 1 respectively, is as a result seen
Table 1.
Embodiment 5
First, PLA-PP composite material
PLA-the PP composite material of the present embodiment, comprises the following components in parts by weight：
PLA (weight average molecular weight 500,000)：30 parts；
Polypropylene (weight average molecular weight 800,000)：65 parts；
Maleic anhydride：5 parts.
2nd, automobile gear shift cover plate
The preparation method of the automobile gear shift cover plate of the present embodiment is specially：
1st, mix
After each composition in above-mentioned PLA-PP composite material is got the raw materials ready according to respective weight portion, it is well mixed,
Obtain mixing material.
2nd, dry
Above-mentioned mixing material is dried into 20min at 90 DEG C, dry feedstock is obtained.
3rd, injection moulding
Above-mentioned dry feedstock is fitted into the barrel of injection machine, injection temperature be 160 DEG C, injection pressure be 85bar, note
The modeling time is injection moulding under conditions of 10s, obtains automobile gear shift cover plate.
The tensile strength of automobile gear shift cover plate, odor profiles and change in size are detected using the method for embodiment 1 respectively, is as a result seen
Table 1.
Embodiment 6
PLA-the PP composite material of the present embodiment, comprises the following components in parts by weight：
PLA (weight average molecular weight 400,000)：32 parts；
Polypropylene (weight average molecular weight 700,000)：63 parts；
Maleic anhydride：5 parts.
2nd, automobile gear shift cover plate
The preparation method of the automobile gear shift cover plate of the present embodiment is specially：
1st, mix
After each composition in above-mentioned PLA-PP composite material is got the raw materials ready according to respective weight portion, it is well mixed,
Obtain mixing material.
2nd, dry
Above-mentioned mixing material is dried into 20min at 110 DEG C, dry feedstock is obtained.
3rd, injection moulding
Above-mentioned dry feedstock is fitted into the barrel of injection machine, injection temperature be 180 DEG C, injection pressure be 75bar, note
The modeling time is injection moulding under conditions of 8s, obtains automobile gear shift cover plate.
The tensile strength of automobile gear shift cover plate, odor profiles and change in size are detected using the method for embodiment 1 respectively, is as a result seen
Table 1.
Reference examples 1
With the composite that the talcum powder by the polypropylene of 80 weight portions (weight average molecular weight 800,000) and 20 weight portions is constituted
The automobile gear shift cover plate of this reference examples is prepared as raw material.
Above-mentioned composite is dried into 30min at 90 DEG C, dry feedstock is obtained；Above-mentioned dry feedstock is loaded into injection machine
Barrel in, injection temperature be 220 DEG C, injection pressure be 90bar, injection time be 8s under conditions of injection moulding, obtain
Automobile gear shift cover plate.
The tensile strength of automobile gear shift cover plate, odor profiles and change in size are detected using the method for embodiment 1 respectively, is as a result seen
Table 1.
Reference examples 2
With by the polypropylene (weight average molecular weight 800,000) of the PLA of 15 weight portions (weight average molecular weight 300,000), 80 weight portions
The composite constituted with the maleic anhydride of 5 weight portions prepares the automobile gear shift cover plate of this reference examples as raw material.
Above-mentioned composite is dried into 30min at 90 DEG C, dry feedstock is obtained；Above-mentioned dry feedstock is loaded into injection machine
Barrel in, injection temperature be 160 DEG C, injection pressure be 90bar, injection time be 8s under conditions of injection moulding, obtain
Automobile gear shift cover plate.
The tensile strength of automobile gear shift cover plate, odor profiles and change in size are detected using the method for embodiment 1 respectively, is as a result seen
Table 1.
Reference examples 3
With by the polypropylene (weight average molecular weight 700,000) of the PLA of 40 weight portions (weight average molecular weight 200,000), 50 weight portions
The composite constituted with the maleic anhydride of 10 weight portions prepares the automobile gear shift cover plate of this reference examples as raw material.
Above-mentioned composite is dried into 30min at 90 DEG C, dry feedstock is obtained；Above-mentioned dry feedstock is loaded into injection machine
Barrel in, injection temperature be 160 DEG C, injection pressure be 90bar, injection time be 8s under conditions of injection moulding, obtain
Automobile gear shift cover plate.
The tensile strength of automobile gear shift cover plate, odor profiles and change in size are detected using the method for embodiment 1 respectively, is as a result seen
Table 1.
The testing result of each automobile gear shift cover plate of table 1
| Automobile gear shift cover plate | Tensile strength/MPa | Odor profiles/level | Change in size/mm |
| Embodiment 1 | 33 | 2.5 | ±0.5 |
| Embodiment 2 | 30 | 3.0 | ±1 |
| Embodiment 3 | 29 | 3.0 | ±1 |
| Embodiment 4 | 35 | 2.5 | ±0.5 |
| Embodiment 5 | 34 | 2.5 | ±0.5 |
| Embodiment 6 | 36 | 2.5 | ±0.5 |
| Reference examples 1 | 27 | 4.0 | ±3 |
| Reference examples 2 | 24 | 3.5 | ±2 |
| Reference examples 3 | 22 | 3.0 | ±1.5 |
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
Pipe has been described in detail with reference to foregoing embodiments to the present invention, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of PLA-PP composite material, it is characterised in that the composition including following weight portion：
PLA：25-40 parts；
Polypropylene：60-70 parts；
Maleic anhydride：5-10 parts.
2. PLA-PP composite material according to claim 1, it is characterised in that the PLA is divided equally again
Son amount is 300,000-50 ten thousand.
3. PLA-PP composite material according to claim 1, it is characterised in that described polyacrylic heavy to divide equally
Son amount is 600,000-80 ten thousand.
4. a kind of preparation method of PLA-PP composite material, it is characterised in that comprise the following steps：
The maleic anhydride of the PLA of 25-40 weight portions, the polypropylene of 60-70 weight portions and 5-10 weight portions is mixed equal
It is even, obtain mixed material；
The mixed material is dried, subsequent injection moulding.
5. preparation method according to claim 4, it is characterised in that the dry temperature is 90-110 DEG C, it is described dry
The dry time is 15-30min.
6. preparation method according to claim 4, it is characterised in that the condition of the injection moulding is：Injection temperature
160-180 DEG C, injection pressure 70-90bar, injection time is 8-12s.
7. according to any described preparation method of claim 4 to 6, it is characterised in that the weight average molecular weight of the PLA is
300000-50 ten thousand.
8. according to any described preparation method of claim 4 to 6, it is characterised in that the polyacrylic weight average molecular weight is
600000-80 ten thousand.
9. application of any described PLA-PP composite material of claims 1 to 3 on inner and outer decorative parts of automobile is prepared.
10. a kind of automobile gear shift cover plate, it is characterised in that by by any described PLA-polypropylene of claims 1 to 3
Composite is dried, injection moulding is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710091045.8A CN106883510A (en) | 2017-02-20 | 2017-02-20 | Polylactic acid poly acrylic composite and its preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710091045.8A CN106883510A (en) | 2017-02-20 | 2017-02-20 | Polylactic acid poly acrylic composite and its preparation method and application |
Publications (1)
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| CN106883510A true CN106883510A (en) | 2017-06-23 |
Family
ID=59180776
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710091045.8A Pending CN106883510A (en) | 2017-02-20 | 2017-02-20 | Polylactic acid poly acrylic composite and its preparation method and application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113583349A (en) * | 2021-05-18 | 2021-11-02 | 会通新材料股份有限公司 | Environment-friendly polypropylene composite material and preparation method and application thereof |
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| CN104364300A (en) * | 2012-09-21 | 2015-02-18 | 乐金华奥斯株式会社 | Bioresin-added interior sheet for vehicles and method for manufacturing same |
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2017
- 2017-02-20 CN CN201710091045.8A patent/CN106883510A/en active Pending
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| CN113583349A (en) * | 2021-05-18 | 2021-11-02 | 会通新材料股份有限公司 | Environment-friendly polypropylene composite material and preparation method and application thereof |
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