CN107841103A - A kind of Novel polylactic acid thin film and preparation method thereof - Google Patents
A kind of Novel polylactic acid thin film and preparation method thereof Download PDFInfo
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- CN107841103A CN107841103A CN201610832327.4A CN201610832327A CN107841103A CN 107841103 A CN107841103 A CN 107841103A CN 201610832327 A CN201610832327 A CN 201610832327A CN 107841103 A CN107841103 A CN 107841103A
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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
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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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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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
- 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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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
- C08L2201/06—Biodegradable
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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
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
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- Compositions Of Macromolecular Compounds (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
The invention discloses a kind of Novel polylactic acid thin film and preparation method thereof, is made up of the raw material of following masses number：85 95 parts of PLA, 25 parts of erucyl amide, 5 15 parts of natural fiber powder, 36 parts of compatilizer, 12 parts of superfine titanic oxide.35 parts of coupling agent, of the invention is a little：1st, polylactic acid film prepared by the present invention improves the original mechanical property of poly-lactic acid material, while has good barrier；Without using traditional antioxidant in system, the possibility of pollution of food is reduced.2nd, the present invention replaces traditional organic ultraviolet light stabilizer using superfine titanic oxide, can effectively reduce problem of appearance caused by UV light stabilizing agent migration precipitation；Titanium dioxide also has certain antibacterial effect simultaneously, can partly or entirely substitute conventional antiseptic.3rd, the polylactic acid film proposed by the present invention for preparing has good biological degradability, reduces the pollution to environment.Simple production process is prepared simultaneously, cost is low, easily industrialization.
Description
Technical field
The present invention relates to a kind of Novel polylactic acid thin film and preparation method thereof, belongs to polymer modification and processing is led
Domain.
Background technology
Polymer barrier material mainly has olefin plastics, polyesters, polyamide-based, polyvinyl chloride, PLA at present
Alcohols, fluorinated plastics, liquid crystal type polymer etc.." white pollution " has caused caused by traditional TPO plastic refuse
The extensive concerns of countries in the world；Meanwhile the plastics industry using oil as raw material, because petroleum resources gradually decrease and can not be again
Raw, raw material is by worsening shortages.And degradable plastic then be solve plastic refuse environmental pollution and plastic raw materials shortage have
Effect approach, its market prospects are boundless.
PLA（PLA）It is a kind of green material, is made by tunnings such as corns for base stock that there is good life
Thing degradability, carbon dioxide and water degradable can be generated after use, it is free from environmental pollution.But common hard PLA is crisp
Property material, not impact resistance, when film is made, if being difficult to meet needs without orientation characteristic.Other properties, such as thermostabilization
Property, barrier, solvent resistance, anti-flammability etc. generally can not meet that the other PLA of needs production cost is of a relatively high, also limit
Its purposes and using effect.
Easily there is degradation with aging under hot or various radiation conditions in PLA.Traditional method is that addition is a certain amount of
Antioxidant and light stabilizer improve.Most light stabilizers, such as various photomask agent, UV absorbers, free radical
Capturing agent etc. is all the relatively low organic compound or oligomer of molecular weight.When these light stabilizers are in high temperature or ultraviolet light
Under, there is the trend gradually separated out to product surface.Traditional antioxidant 1010,168 etc. are added in polyolefine material simultaneously,
It is possible to migrate generation transport phenomena in use.It is therefore desirable to consider the dosage and phase of various auxiliary agents in thin-film material
Capacitive problem causes migration precipitation problem.
The content of the invention
It is an object of the invention to improve a kind of Novel polylactic acid thin film and preparation method thereof, obtained PLA is thin
Film improves the original mechanical property of poly-lactic acid material, while has good barrier, can better meet food, medicine etc.
Requirement to packaging material.
To achieve these goals, technical scheme is as follows：
A kind of Novel polylactic acid thin film, it is made up of the raw material of following masses number：PLA 85-95 parts, erucyl amide 2-5
Part, natural fiber powder 5-15 parts, compatilizer 3-6 parts, superfine titanic oxide 1-2 parts.Coupling agent 3-5 parts are further, a kind of
Novel polylactic acid thin film, it is made up of the raw material of following masses number：PLA 85-95 parts, erucyl amide 2-5 parts, naturally
Fiber powder 5-15 parts, compatilizer 3-6 parts, superfine titanic oxide 1-2 parts.Coupling agent 3-5 parts, wherein, the weight of described PLA
Average molecular weight is 5-40 ten thousand, molecular weight distribution 1.2-2.4, crystallinity 10-60%.
Described natural fiber powder is powdered rice hulls, without any processing.
Described Behavior of Ultrafine Titanium Dioxide Particles, its 80% particle diameter distribution is in 150-240nm.
The preparation method of above-mentioned Novel polylactic acid thin film, its step are as follows：
1. weighing to obtain each material by weight ratio, then PLA is placed in vacuum drying oven and dried 8 hours；
2. various raw materials are mixed into 5-15 minutes in high-speed mixer；
3. mixed raw material is added in double screw extruder, the cooling granulation after melting extrusion, PLA composite wood is made
Material, its technique are：One 160-170 DEG C of area, two 170-180 DEG C of areas, three 180-190 DEG C of areas, four 175-185 DEG C of areas；Whole extrusion
The residence time of process is 1-2 minutes, pressure 12-18MPa；
4. the lactic acid composite material of preparation is placed in into blowing in blow molding machine obtains polylactic acid film, wherein barrel temperature is
175-185℃。
The present invention be a little：
1st, polylactic acid film prepared by the present invention improves the original mechanical property of poly-lactic acid material, while has good barrier
Property；Without using traditional antioxidant in system, the possibility of pollution to food is reduced；
2nd, the present invention replaces traditional organic ultraviolet light stabilizer using superfine titanic oxide, and it is steady can be effectively reduced ultraviolet light
Problem of appearance caused by determining agent migration precipitation；Titanium dioxide also has certain antibacterial effect simultaneously, can partly or entirely replace
The antiseptic that generation is commonly used；
3rd, the polylactic acid film proposed by the present invention for preparing has good biological degradability, reduces the pollution to environment.Make simultaneously
Standby simple production process, cost are low.Easily industrialization.
Embodiment
Each material is weighed to obtain by weight ratio, and then PLA is placed in vacuum drying oven and dried 8 hours；By various raw materials in height
5-15 minutes are mixed in fast mixer；Mixed raw material is added in double screw extruder, the cooling granulation after melting extrusion,
Lactic acid composite material is made, its technique is：One 160-170 DEG C of area, two 170-180 DEG C of areas, three 180-190 DEG C of areas, 4th area
175-185℃；The residence time of whole extrusion is 1-2 minutes, pressure 12-18MPa.Finally the PLA of preparation is answered
Condensation material is placed in blowing in blow molding machine and obtains polylactic acid film, and wherein barrel temperature is 175-185 DEG C.
Embodiment 1
95 parts of PLA, 2 parts of erucyl amide, 5 parts of natural fiber powder, 3 parts of compatilizer, 2 parts of superfine titanic oxide.3 parts of coupling agent.
Test result：Tensile strength（MPa）55.9 elongation at break（%）8.65 angle tear strength（N/m）173.6
Gas transmission coefficient（cm3.cm/cm2.s.Pa）8.1 × 10-13, vapor transmission coefficient（kg.m/m2.s.Pa）7.2×10-
15。
Embodiment 2
90 parts of PLA, 4 parts of erucyl amide, 10 parts of natural fiber powder, 4 parts of compatilizer, 1 part of superfine titanic oxide.Coupling agent 4
Part.
Test result：Tensile strength（MPa）59.7 elongation at break（%）14.6 angle tear strength（N/m）195.6
Gas transmission coefficient（cm3.cm/cm2.s.Pa）5.6 × 10-13, vapor transmission coefficient（kg.m/m2.s.Pa）6.3×10-
15。
Embodiment 3
85 parts of PLA, 5 parts of erucyl amide, 15 parts of natural fiber powder, 6 parts of compatilizer, 2 parts of superfine titanic oxide.Coupling agent 5
Part.
Test result：Tensile strength（MPa）63.4 elongation at break（%）21.8 angle tear strength（N/m）206.8
Gas transmission coefficient（cm3.cm/cm2.s.Pa）3.8 × 10-13, vapor transmission coefficient（kg.m/m2.s.Pa）4.5×10-
15。
Claims (6)
- A kind of 1. Novel polylactic acid thin film, it is characterised in that：It is made up of the raw material of following masses number：PLA 85-95 Part, erucyl amide 2-5 parts, natural fiber powder 5-15 parts, compatilizer 3-6 parts, superfine titanic oxide 1-2 parts, coupling agent 3-5 parts.
- 2. Novel polylactic acid thin film according to claim 1, it is characterised in that：By the raw material group of following masses number Into：PLA 85-95 parts, erucyl amide 2-5 parts, natural fiber powder 5-15 parts, compatilizer 3-6 parts, superfine titanic oxide 1-2 Part, coupling agent 3-5 parts.
- 3. Novel polylactic acid thin film according to claim 1 or 2, it is characterised in that：Described PLA is poly- breast The weight average molecular weight of acid is 5-40 ten thousand, molecular weight distribution 1.2-2.4, crystallinity 10-60%.
- 4. Novel polylactic acid thin film according to claim 1 or 2, it is characterised in that：Described natural fiber powder is Powdered rice hulls, without any processing.
- 5. Novel polylactic acid thin film according to claim 1 or 2, it is characterised in that：Described superfine titanic oxide Powder, its 80% particle diameter distribution is in 150-240nm.
- 6. Novel polylactic acid thin film according to claim 1 or 2, it is characterised in that：Its step is as follows：（1）Each material is weighed to obtain by weight ratio, and then PLA is placed in vacuum drying oven and dried 8 hours；（2）Various raw materials are mixed into 5-15 minutes in high-speed mixer；（3）Mixed raw material is added in double screw extruder, the cooling granulation after melting extrusion, PLA composite wood is made Material, its technique are：One 160-170 DEG C of area, two 170-180 DEG C of areas, three 180-190 DEG C of areas, four 175-185 DEG C of areas；Whole extrusion The residence time of process is 1-2 minutes, pressure 12-18MPa；（4）The lactic acid composite material of preparation is placed in blowing in blow molding machine and obtains polylactic acid film, wherein barrel temperature For 175-185 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610832327.4A CN107841103A (en) | 2016-09-20 | 2016-09-20 | A kind of Novel polylactic acid thin film and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610832327.4A CN107841103A (en) | 2016-09-20 | 2016-09-20 | A kind of Novel polylactic acid thin film and preparation method thereof |
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| CN107841103A true CN107841103A (en) | 2018-03-27 |
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| CN201610832327.4A Pending CN107841103A (en) | 2016-09-20 | 2016-09-20 | A kind of Novel polylactic acid thin film and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116394614A (en) * | 2023-04-08 | 2023-07-07 | 河北澳航建材科技有限公司 | Prefabricated dry floor heating module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792581A (en) * | 2010-03-30 | 2010-08-04 | 奇瑞汽车股份有限公司 | Composite material and preparation method thereof |
| CN102731982A (en) * | 2012-07-23 | 2012-10-17 | 惠州健昇吸塑制造有限公司 | Biodegradable material containing fiber base and polylactic acid and preparation method thereof |
| CN103724957A (en) * | 2013-12-17 | 2014-04-16 | 浙江普利特新材料有限公司 | Novel polylactic acid thin film material and preparation method thereof |
| CN106543663A (en) * | 2015-09-22 | 2017-03-29 | 黑龙江鑫达企业集团有限公司 | A kind of preparation method of long natural fiber/polylactic acid-base composite material |
-
2016
- 2016-09-20 CN CN201610832327.4A patent/CN107841103A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792581A (en) * | 2010-03-30 | 2010-08-04 | 奇瑞汽车股份有限公司 | Composite material and preparation method thereof |
| CN102731982A (en) * | 2012-07-23 | 2012-10-17 | 惠州健昇吸塑制造有限公司 | Biodegradable material containing fiber base and polylactic acid and preparation method thereof |
| CN103724957A (en) * | 2013-12-17 | 2014-04-16 | 浙江普利特新材料有限公司 | Novel polylactic acid thin film material and preparation method thereof |
| CN106543663A (en) * | 2015-09-22 | 2017-03-29 | 黑龙江鑫达企业集团有限公司 | A kind of preparation method of long natural fiber/polylactic acid-base composite material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116394614A (en) * | 2023-04-08 | 2023-07-07 | 河北澳航建材科技有限公司 | Prefabricated dry floor heating module |
| CN116394614B (en) * | 2023-04-08 | 2023-11-28 | 河北澳航建材科技有限公司 | Prefabricated dry floor heating module |
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