CN110483967A - A kind of high viscosity PLA overlay film - Google Patents
A kind of high viscosity PLA overlay film Download PDFInfo
- Publication number
- CN110483967A CN110483967A CN201910774206.2A CN201910774206A CN110483967A CN 110483967 A CN110483967 A CN 110483967A CN 201910774206 A CN201910774206 A CN 201910774206A CN 110483967 A CN110483967 A CN 110483967A
- Authority
- CN
- China
- Prior art keywords
- pla
- parts
- overlay film
- dibenzoyl peroxide
- high viscosity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
- C08J3/246—Intercrosslinking of at least two polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
Abstract
The present invention relates to PLA film coating technique field, in particular a kind of high viscosity PLA overlay film, comprising: PLA40-60 parts, PBAT20-40 parts, 10-15 parts of dibenzoyl peroxide, 0.2-0.8 parts of dibenzoyl peroxide.In the present invention, by adding dibenzoyl peroxide (BPO) in PLA, PBAT, dibenzoyl peroxide (PBS), its torque is improved, the apparent viscosity and melt non-newtonian index of mixture are increased, so that the viscosity of PLA increases, it is suitable for promoting the use of.
Description
Technical field
The present invention relates to PLA film coating technique field, specially a kind of high viscosity PLA overlay film.
Background technique
Polylactic acid melt viscosity and melt strength are lower, this is restricted its processing technology, especially in foaming mistake
Cheng Zhong, since its lower melt viscosity and intensity keep foam unstable and is easy to rupture, and eventually leads to foaming failure, at present city
Most of PLA material present on, after PLA is blended with PBS, the tensile strength of material is reduced, but elongation at break improves；
With the increase of BPO content in system, material is significantly shown by the transformation of brittleness to toughness, and the tensile strength of material,
Elongation at break and Young's modulus increase with the increase of BPO content；With the increase of PBS content, the fracture of blend is stretched
Long rate significantly increases, but tensile strength reduces, and therefore, proposes a kind of high viscosity PLA overlay film regarding to the issue above.
Summary of the invention
The purpose of the present invention is to provide a kind of high viscosity PLA overlay films, by PLA, PBAT, dibenzoyl peroxide
(PBS) dibenzoyl peroxide (BPO) is added in, its torque is improved, increases apparent viscosity and the non-ox of melt of mixture
Pause index, so that the viscosity of PLA increases, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme:
A kind of high viscosity PLA overlay film, the material composition of the PLA overlay film indicates to include: PLA40-60 parts in parts by weight,
PBAT20-40 parts, 10-15 parts of dibenzoyl peroxide, 0.2-0.8 parts of dibenzoyl peroxide.
Preferably, the PLA density 1.24g/cm3, MI:7g/10min190 DEG C/2.16kg, be those semi-crystalline materials.
Preferably, the PBAT density 1.25g/cm3, MI:2-5g/10min190 DEG C/2.16kg.
Preferably, include the following steps:
1) by PLA40-60 part of corresponding weight, PBAT20-40 parts, 10-15 parts of dibenzoyl peroxide, diphenyl peroxide
0.2-0.8 parts of formyl uniform by mixing plant, blended that blended mixts are prepared；Wherein, blending temperature 150-
2000 DEG C, the blending time is 5-15min；
2) blended mixts are molded 180-195 DEG C on vacuum mold press, under 10-15MPa, obtain what increasing stick was modified
PLA material；
3) the modified PLA material of increasing stick is transported in heating tank, the temperature of heating, dissolution, heating tank is controlled in 190-
210 DEG C, PLA feed particles are made；
PLA feed particles are imported into laminating machine, by heating, paving, PLA overlay film and direct overlay film is made on paper.
Compared with prior art, the beneficial effects of the present invention are: by PLA, PBAT, dibenzoyl peroxide (PBS)
Middle addition dibenzoyl peroxide (BPO), improves its torque, and the apparent viscosity and melt non newtonian for increasing mixture refer to
Number, so that the viscosity of PLA increases.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The present invention provides a kind of technical solution:
A kind of high viscosity PLA overlay film, the material composition of the PLA overlay film indicates to include: PLA40-60 parts in parts by weight,
PBAT20-40 parts, 10-15 parts of dibenzoyl peroxide, 0.2-0.8 parts of dibenzoyl peroxide.
Wherein, PLA density 1.24g/cm3, MI:7g/10min190 DEG C/2.16kg, be those semi-crystalline materials.
Wherein, PBAT density 1.25g/cm3, MI:2-5g/10min190 DEG C/2.16kg.
Wherein, include the following steps:
1) by PLA40-60 part of corresponding weight, PBAT20-40 parts, 10-15 parts of dibenzoyl peroxide, diphenyl peroxide
0.2-0.8 parts of formyl uniform by mixing plant, blended that blended mixts are prepared；Wherein, blending temperature 150-
2000 DEG C, the blending time is 5-15min；
2) blended mixts are molded 180-195 DEG C on vacuum mold press, under 10-15MPa, obtain what increasing stick was modified
PLA material；
3) the modified PLA material of increasing stick is transported in heating tank, the temperature of heating, dissolution, heating tank is controlled in 190-
210 DEG C, PLA feed particles are made；
4) PLA feed particles are imported into laminating machine, by heating, paving, PLA overlay film and direct overlay film is made in paper
On.
Dibenzoyl peroxide (BPO) is a kind of common radical initiator, and BPO is chiefly used in research work before this
Polyolefin system, the application in biodegradation material field are concentrated mainly on PLA the and PBS configuration aspects of preparation crosslinking.PLA
And the hydrogen in the carboxyl end group and terminal hydroxy group of PBS molecule chain end belongs to active hydrogen, peroxide be by free radical hydrogen abstraction reaction,
Make PLA and PBS strand that a degree of branching and cross-linking reaction, the phase with the increase of BPO content, between PLA and PBS occur
Capacitive is gradually improved, but the two does not form homogeneous system, and the PBS phase of dispersion effectively improves the toughness of material；With
The increase of PBS content, the range of matrix yielding increases on impact fracture surface, and stress whitening phenomenon is further obvious, illustrates that PBS phase is fine
Ground has dispersed impact stress, is improved the impact strength of material, and the present invention introduces in PLA/PBS/PBAT blend
BPO improves its torque, the apparent viscosity and melt non-newtonian index of mixture is increased, so that the viscosity of PLA increases.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of high viscosity PLA overlay film, it is characterised in that: the material composition of the PLA overlay film indicate in parts by weight include:
PLA40-60 parts, PBAT20-40 parts, 10-15 parts of dibenzoyl peroxide, 0.2-0.8 parts of dibenzoyl peroxide.
2. a kind of high viscosity PLA overlay film according to claim 1, it is characterised in that: the PLA density 1.24g/cm3,
MI:7g/10min190 DEG C/2.16kg, be those semi-crystalline materials.
3. a kind of high viscosity PLA overlay film according to claim 1, it is characterised in that: the PBAT density 1.25g/cm3,
MI:2-5g/10min190℃/2.16kg。
4. a kind of production method of high viscosity PLA overlay film according to claim 1, characterized by the following steps:
1) by PLA40-60 part of corresponding weight, PBAT20-40 parts, 10-15 parts of dibenzoyl peroxide, dibenzoyl peroxide
0.2-0.8 parts uniform by mixing plant, blended that blended mixts are prepared；Wherein, blending temperature is 150-2000 DEG C,
The blending time is 5-15min；
2) blended mixts are molded 180-195 DEG C on vacuum mold press, under 10-15MPa, obtain the modified PLA material of increasing stick
Material；
3) the modified PLA material of increasing stick is transported in heating tank, the temperature of heating, dissolution, heating tank is controlled in 190-210
DEG C, PLA feed particles are made；
4) PLA feed particles are imported into laminating machine, by heating, paving, PLA overlay film and direct overlay film is made on paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910774206.2A CN110483967A (en) | 2019-08-21 | 2019-08-21 | A kind of high viscosity PLA overlay film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910774206.2A CN110483967A (en) | 2019-08-21 | 2019-08-21 | A kind of high viscosity PLA overlay film |
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| Publication Number | Publication Date |
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| CN110483967A true CN110483967A (en) | 2019-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910774206.2A Pending CN110483967A (en) | 2019-08-21 | 2019-08-21 | A kind of high viscosity PLA overlay film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112778720A (en) * | 2020-04-09 | 2021-05-11 | 合肥恒鑫环保科技有限公司 | High-viscosity PLA (polylactic acid) film |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103627153A (en) * | 2012-08-20 | 2014-03-12 | 上海杰事杰新材料(集团)股份有限公司 | Entire biodegradation PLA/PBAT composite material and preparing method therefor |
| CN105385394A (en) * | 2014-07-18 | 2016-03-09 | 福建隆达竹业有限公司 | High-viscosity laminated adhesive and preparation method thereof |
| CN106479145A (en) * | 2016-11-10 | 2017-03-08 | 无锡市明盛强力风机有限公司 | A kind of increasing stick method of modifying of PLA |
| CN108727788A (en) * | 2017-04-21 | 2018-11-02 | 武汉金发科技有限公司 | A kind of preparation method of high viscosity poly butylene succinate/lactic acid composite material |
-
2019
- 2019-08-21 CN CN201910774206.2A patent/CN110483967A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103627153A (en) * | 2012-08-20 | 2014-03-12 | 上海杰事杰新材料(集团)股份有限公司 | Entire biodegradation PLA/PBAT composite material and preparing method therefor |
| CN105385394A (en) * | 2014-07-18 | 2016-03-09 | 福建隆达竹业有限公司 | High-viscosity laminated adhesive and preparation method thereof |
| CN106479145A (en) * | 2016-11-10 | 2017-03-08 | 无锡市明盛强力风机有限公司 | A kind of increasing stick method of modifying of PLA |
| CN108727788A (en) * | 2017-04-21 | 2018-11-02 | 武汉金发科技有限公司 | A kind of preparation method of high viscosity poly butylene succinate/lactic acid composite material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112778720A (en) * | 2020-04-09 | 2021-05-11 | 合肥恒鑫环保科技有限公司 | High-viscosity PLA (polylactic acid) film |
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Address after: 230000 No.36 Shuangfeng Road, Changfeng Shuangfeng Economic Development Zone, Hefei City, Anhui Province Applicant after: Hefei Hengxin Life Technology Co.,Ltd. Address before: 230000 No.36 Shuangfeng Road, Changfeng Shuangfeng Economic Development Zone, Hefei City, Anhui Province Applicant before: HEFEI HENGXIN ENVIRONMENTAL SCIENCE & TECHNOLOGY Co.,Ltd. |
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Application publication date: 20191122 |
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