CN106565995A - Filling masterbatch special for ecological thin film and preparation method thereof - Google Patents
Filling masterbatch special for ecological thin film and preparation method thereof Download PDFInfo
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
- C08L3/02—Starch; Degradation products thereof, e.g. dextrin
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- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- 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
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- 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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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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- 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
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- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
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Abstract
The invention relates to the field of ecological plastics, in particular to a filling masterbatch special for an ecological thin film and a preparation method thereof. Starch is dried completely and then is ground with a two-dimension inorganic substance of the layered structure under the dry-state condition and nitrogen freezing protection effect, the starch and the layered structure of the two-dimension inorganic substance are combined so that the starch can be inserted into the gap between layers of the two-dimension inorganic substance, and the water resistance is further achieved by means of liquid-state polyisobutene wrapping. On one hand, the two-dimension inorganic substance carries the starch to be dispersed and protects the starch, and thus the starch can have good processing fluidity without micromolecule lubricating agent and plasticizer; and on the other hand, the two-dimension inorganic substance can absorb instantaneous heat in high-temperature processing, the influence on the starch by high temperatures is buffered, and thus good high-temperature resistance and repeated processability are achieved. In particular, spherical inorganic particles with the high fluidity are assisted in, so that the mobility of the filling masterbatch in processing is improved, shearing stress is dispersed, and shear degradation of the starch is effectively prevented. The defect that plastics starch is used all the time and plastic film holes are caused due to micromolecule plasticizer volatilization is overcome.
Description
Technical field
The present invention relates to ecological plastic applications.Specifically related to a kind of ecological thin film dedicated filling mother stock and preparation method thereof.
The filling master batch belongs to starch plasticses, and with biological degradability and physical mechanical disintegrative, what is more important is used for thin film
The filling master batch for effectively overcoming at present based on starch produces in the film the defect of pore.
Background technology
With the fast development of polymer science and technology, the Functional Requirement more and more higher to macromolecule material product.
Ecological plastics become an important development trend of macromolecular material.Particularly there is the ecological plastics of biological degradation function, quilt
Due to containing active group hydroxyl, ester group, carboxyl for being easily decomposed by the microorganisms etc. behind embedment underground, under being microbial action,
Water and carbon dioxide are easily decomposed into, so as to go back to nature.
However, ecological plastics its processing characteristics that plastic applications are obtained has problems always, and it is relatively costly.Have impact on
Ecological plastics are promoted the use of on a large scale.As passed through fermentable or chemosynthesis at present with biological degradation function
Biopolymer polylactic acid（PLA）, poly butylene succinate（PBS）, carbon dioxide polymer（PPC）, polycaprolactone
（PCL）, polyhydroxyalkanoate（PHA）Deng.On the one hand due to fermentable or the biodegradable plastic raw material of chemosynthesis
Limited source, complex process, production cost is too high, and large-scale production is difficult, thus results in biological plasticss selling at exorbitant prices, large area
Promote the use of and be restricted；On the other hand, because its group contains the groups such as hydroxyl, ester group, carboxyl so that processing characteristics is simultaneously paid no attention to
Think.Cause there is the major defects such as melt strength is low, be difficult to molding, reprocessabilty is degradable when for processing film.Therefore
Above-mentioned biopolymer generally needs the preferable resin of collocation processability to use.
Starch belongs to biopolymer, and in ecological plastics are prepared extremely important advantage is occupied.Its basic reason is into
This low, source is wide, renewable.Long term growth for ecological plastics provides important raw material support.But starch is equally faced with
Poor in processability, poor heat resistance, the defect for being difficult to reprocessabilty.In this regard, technical staff has been carried out not for the hot-workability of starch
It is modified disconnectedly.Such as by the refinement to starch granuless, molecule overall structure is lax, degree of crystallinity declines, molecular weight is reduced etc. is made, from
And make the disordering degree increase of starch improve processability.But because starch always belongs to highly crystalline body, therefore miniaturization changes
Property has larger limitation.More generally small molecule plasticizer is made to ooze inside people's starch molecule, so as to shallow lake is substantially improved
The plasticity of powder, such as occurs in that thermoplastic starch.Those skilled in the art have used more generally for the processability for lifting starch
Lubricant（Such as white oil, Tissuemat E）Or the small molecule plasticizer that addition is more（Such as ethylene glycol, glycerol）Although carrying
The high plasticity of processing, but small molecule lubricant, plasticizer highly volatile in high temperature process, so as to cause ecological plastics system
The defect of product.When particularly addition is used in thin article such as thin film, because small molecule volatilization causes film surface to occur uniformly
Hole.This defect hinders starch large-area applications in the film and promotes.
The content of the invention
In view of above-mentioned starch easily occurs the defect of hole as ecological plastic raw materialss when thin film is prepared, the present invention proposes one
The preparation method of ecological thin film dedicated filling mother stock is planted, the method is, with starch as material of main part, to lead in starch thinning process
Cross and combined with the Two-dimensional Inorganic thing of auxiliary, make to reach the interlayer of nano level starch insertion Two-dimensional Inorganic thing, by with carrier tree
Fat extruding pelletization obtains ecological thin film dedicated filling mother stock.One side Two-dimensional Inorganic thing carries starch dispersion and protects starch, makes
Starch has good processing fluidity under the conditions of without small molecule lubricant, plasticizer；On the other hand, Two-dimensional Inorganic thing is to height
Instantaneous heat quantity during warm working is absorbed, and has buffered impact of the high temperature to starch.Further provide for by the special of the method preparation
With filling master batch, dedicated filling mother stock makes an addition to general thin grade resins and prepares thin film, and film surface is equal without hole, face dispersion
Even, each rim charge and Head material reprocessabilty are without degraded.
For achieving the above object, specifically adopt the following technical scheme that：
A kind of preparation method of ecological thin film dedicated filling mother stock, is characterized in that preparation method is carried out as follows：
1）Starch, Two-dimensional Inorganic thing are separately dried to aqueous and are less than 1%, then with mass ratio 100:（50-80）Mix homogeneously,
Under the conditions of nitrogen cryoprotection in Gas grinding machine dry state to be ground to Two-dimensional Inorganic nitride layer thick less than 100nm, make starch with
The Coating combination of Two-dimensional Inorganic thing, then disperses with liquid polyisobutylene in high speed dispersor, wraps liquid polyisobutylene
In Two-dimensional Inorganic thing, the surface of starch coalition；
2) by step（1）The material 70-80 weight portions for obtaining and inorganic spherical microgranule 5-10 weight portions, vector resin 10-20 weights
Amount part mix homogeneously, sends into twin screw reactive extrursion device, arranges twin screw reactive extrursion device temperature 100-150 DEG C, engine speed
For 200-300 rev/min, ecological thin film dedicated filling mother stock is obtained by continuous mixing, devolatilization, extrusion pelletizing.
Above-mentioned preparation method step 1）Described Two-dimensional Inorganic thing is the Pulvis Talci with Rotating fields, mica powder, pyrophillite
At least one in powder, molybdenum disulphide powder.
Above-mentioned preparation method step 1）Described liquid polyisobutylene usage amount is to be dried starch, Two-dimensional Inorganic thing gross mass
3-5%.
Above-mentioned preparation method step 1）Described Gas grinding machine selects flat air flow crusher, circulating tube type air-flow powder
Broken machine, rotary ejection type jet mill, injecting type jet mill, target formula jet mill, fluidized bed airflow pulverizer, head-on collision
One kind in formula jet mill, supersonic jet mill, eddy airstream pulverizer.
Above-mentioned preparation method step 2）Described inorganic spherical microgranule is that particle diameter is less than 10 μm, sulphuric acid of the sphericity more than 80%
At least one in barium, ceramic microsphere, glass microballoon, zinc sulfide.
Above-mentioned preparation method step 2）Described vector resin is polyethylene, polypropylene, polystyrene, polyethylene-propylene
At least one in acid copolymer, polyethylene vinyl acetate copolymer, polylactic acid, poly butylene succinate, polycaprolactone.
A kind of ecological thin film dedicated filling mother stock, is characterized in that the ecological thin film being prepared by above-mentioned preparation method is special
Filling master batch.The filling master batch significant advantage be not use small molecule lubricant, plasticizer, and have good dispersibility,
Mobility and repeatedly hot-workability, overcome all the time using plasticized starch because the volatilization of small molecule plasticizer causes plastic sheeting
The defect of hole.
The present invention by the way that starch is completely dried, dry conditions and chilled nitrogen protection under with have Rotating fields two dimension
Inorganic matters grind, and starch is combined with the Rotating fields of Two-dimensional Inorganic thing so as to insert the interlayer of Two-dimensional Inorganic thing, further with
Liquid polyisobutylene is wrapped and makes it have resistance to water.One side Two-dimensional Inorganic thing carries starch dispersion and protects starch, makes starch
There is good processing fluidity under the conditions of without small molecule lubricant, plasticizer；On the other hand, Two-dimensional Inorganic thing adds to high temperature
The instantaneous heat quantity in man-hour is absorbed, and has buffered impact of the high temperature to starch so as to good heat-resisting quantity and can be repeatedly
Processability.Particularly, the inorganic spherical microgranule with high fluidity is facilitated so that filling master batch mobility in process
Improve, dispersing shear stress effectively prevents starch shear degradation.
A kind of a kind of ecological thin film dedicated filling mother stock of the present invention and preparation method thereof, there is provided brand-new starch plastic system
Standby technology, significant progressive and excellent effect shows compared with existing starch plastic filling master batch：
1st, starch is protected by Two-dimensional Inorganic thing, the significant progress of the filling master batch is not use small molecule lubricant, plasticising
Agent, and have good dispersibility, mobility, overcome and cause plastic sheeting hole using the volatilization of small molecule plasticizer all the time
Defect.
2nd, instantaneous heat quantity during high temperature process is absorbed by Two-dimensional Inorganic thing, has buffered shadow of the high temperature to starch
Ring so as to good heat-resisting quantity and reprocessabilty.Particularly, the inorganic spherical facilitated with high fluidity is micro-
Grain so that in process mobility is improved filling master batch, and dispersing shear stress effectively prevents starch shear degradation.
3rd, a kind of preparation method of ecological thin film dedicated filling mother stock of the present invention, lifts starch processing characteristics substantially, production
Process is simple is controllable, and production cost is relatively low, is adapted to large-scale production, has significantly promoted the application of starch base ecology plastics.
Specific embodiment
Detailed description below, is described in further detail again to the above of the present invention.But this should not be managed
Solve the scope for above-mentioned theme of the invention and be only limitted to Examples below.Without departing from the idea case in the present invention described above, root
The various replacements made according to ordinary skill knowledge and customary means or change, all should be included within the scope of the invention.
Embodiment 1
1）Corn starch, Two-dimensional Inorganic thing pyrophyllite powder are separately dried to aqueous and are less than 1%, wherein corn starch by Natural Water
Water of crystallization is extremely less than 1% in interior moisture drying, then with mass ratio 100:50 mix homogeneously, under the conditions of nitrogen cryoprotection
15min is ground in flat air flow crusher dry state, to Two-dimensional Inorganic nitride layer is thick 100nm is less than, and make starch and Two-dimensional Inorganic
The Coating combination of thing pyrophillite, typical checking is to be placed in water starch intercalation thing, can rapid precipitation, and upper liquid is muddy
Degree is little, and being tightly combined for starch and Two-dimensional Inorganic thing pyrophillite is can be determined that substantially.Then with liquid polyisobutylene in high speed point
Disperse in scattered machine, liquid polyisobutylene is wrapped in the surface of Two-dimensional Inorganic thing, starch coalition；Liquid polyisobutylene usage amount
For be dried starch, Two-dimensional Inorganic thing gross mass 5%.
2) by step（1）The weight portion of material 80 for obtaining is less than 10 μm with particle diameter, barium sulfate spherical nothing of the sphericity more than 80%
The weight portion of machine microgranule 10, the weight portion mix homogeneously of poly butylene succinate 10, send into twin screw reactive extrursion device, arrange double spiral shells
Bar reactive extrursion device temperature 100-120 DEG C, engine speed is 220 revs/min, is obtained by continuous mixing, devolatilization, extrusion pelletizing
Ecological thin film dedicated filling mother stock.
The state thin film dedicated filling mother stock that embodiment 1 is obtained adds the trade mark to be in 7042 polyvinyl resin with 50w%,
By inflation film manufacturing machine blow thickness 0.008mm mulch film, the smooth good luster of film surface, without hole, without fish scale, its tensile strength,
Elongation percentage such as table 1：
Embodiment 2
1）Tapioca, Two-dimensional Inorganic thing mica powder are separately dried to aqueous and are less than 1%, wherein tapioca by Natural Water knot
Brilliant water is extremely less than 1% in interior moisture drying, then with mass ratio 100:60 mix homogeneously, under the conditions of nitrogen cryoprotection
Dry state grinding 10min in rotary ejection type jet mill, to Two-dimensional Inorganic nitride layer is thick 100nm is less than, and makes starch and Two-dimensional Inorganic
The Coating combination of thing Muscovitum, typical checking is to be placed in water starch intercalation thing, can rapid precipitation, and upper liquid turbidity
It is little, being tightly combined for starch and Two-dimensional Inorganic thing Muscovitum is can be determined that substantially.Then with liquid polyisobutylene in high speed dispersor
Middle dispersion, makes liquid polyisobutylene wrap in the surface of Two-dimensional Inorganic thing, starch coalition；Liquid polyisobutylene usage amount is dry
The 3% of dry starch, Two-dimensional Inorganic thing gross mass.
2) by step（1）The weight portion of material 70 for obtaining is less than 10 μm with particle diameter, ceramic microsphere 10 weight of the sphericity more than 80%
Amount part, the weight portion mix homogeneously of vector resin polystyrene 20, send into twin screw reactive extrursion device, arrange twin screw reactive extrursion
Device temperature 100-150 DEG C, engine speed is 200 revs/min, and by continuous mixing, devolatilization, to obtain ecological thin film special for extrusion pelletizing
Use filling master batch.
The state thin film dedicated filling mother stock that embodiment 2 is obtained adds the trade mark to be in 7042 polyvinyl resin with 50w%,
By inflation film manufacturing machine blow thickness 0.02mm packaging film, the smooth good luster of film surface, without hole, without fish scale, its tensile strength,
Elongation percentage such as table 1：
Embodiment 3
1）Pea starch, Two-dimensional Inorganic thing Pulvis Talci are separately dried to aqueous and are less than 1%, wherein pea starch by Natural Water knot
Brilliant water is extremely less than 1% in interior moisture drying, then with mass ratio 100:80 mix homogeneously, under the conditions of nitrogen cryoprotection
Dry state circular grinding 5min in injecting type jet mill, to Two-dimensional Inorganic nitride layer is thick 100nm is less than, and makes starch with two-dimentional nothing
The talcous Coating combination of machine thing, typical checking is to be placed in water starch intercalation thing, can rapid precipitation, and upper liquid is muddy
Turbidity is little, can be determined that starch is talcous with Two-dimensional Inorganic thing substantially and is tightly combined.Then with liquid polyisobutylene at a high speed
Disperse in dispersion machine, liquid polyisobutylene is wrapped in the surface of Two-dimensional Inorganic thing, starch coalition；Liquid polyisobutylene is used
Measure for be dried starch, Two-dimensional Inorganic thing gross mass 4%.
2) by step（1）The weight portion of material 75 for obtaining and 5 parts of inorganic spherical microgranule zinc sulfide, vector resin polyethylene 20
Part mix homogeneously, sends into twin screw reactive extrursion device, arranges twin screw reactive extrursion device temperature 100-150 DEG C, and engine speed is
300 revs/min, ecological thin film dedicated filling mother stock is obtained by continuous mixing, devolatilization, extrusion pelletizing.
The state thin film dedicated filling mother stock that embodiment 3 is obtained adds the trade mark to be in 7042 polyvinyl resin with 50w%,
By inflation film manufacturing machine blow thickness 0.01mm packaging film, the smooth good luster of film surface, without hole, without fish scale, its tensile strength,
Elongation percentage such as table 1：
Embodiment 4
1）Corn starch, Two-dimensional Inorganic thing molybdenum bisuphide, Pulvis Talci are separately dried to aqueous and are less than 1%, wherein corn starch will
Natural Water water of crystallization interior moisture drying to be less than 1%, then with mass ratio 100:20：50 mix homogeneously, in nitrogen freezing
Under protective condition in eddy airstream pulverizer dry state circular grinding 3min, be less than 100nm to Two-dimensional Inorganic nitride layer is thick, and make shallow lake
The Coating combination of powder and Two-dimensional Inorganic thing, typical checking is to be placed in water starch intercalation thing, can rapid precipitation, and upper strata
Liquid turbidity is little, and being tightly combined for starch and Two-dimensional Inorganic thing is can be determined that substantially.Then with liquid polyisobutylene in high speed point
Disperse in scattered machine, liquid polyisobutylene is wrapped in the surface of Two-dimensional Inorganic thing, starch coalition；Liquid polyisobutylene usage amount
For be dried starch, Two-dimensional Inorganic thing gross mass 5%.
2) by step（1）The weight portion of material 80 for obtaining and 10 parts of inorganic spherical microgranule glass microballoon, the poly- breast of vector resin
Sour 15 parts of mix homogeneously, send into twin screw reactive extrursion device, arrange twin screw reactive extrursion device temperature 100-150 DEG C, and main frame turns
Speed is 200 revs/min, and by continuous mixing, devolatilization, extrusion pelletizing ecological thin film dedicated filling mother stock is obtained.
During the state thin film dedicated filling mother stock that embodiment 4 is obtained adds the trade mark as 2002D polylactic acid with 50w%, by blowing
The packaging film of film machine blowing thickness 0.05mm, the smooth good luster of film surface, without hole, without fish scale, its tensile strength, elongation percentage
Such as table 1：
Table 1：
| Test event | Film thickness, mm | Tensile break strength, MPa | Tension fracture elongation rate, % |
| Embodiment 1 | 0.008 | 16 | 500 |
| Embodiment 2 | 0.02 | 18 | 360 |
| Embodiment 3 | 0.01 | 15 | 320 |
| Embodiment 4 | 0.05 | 21 | 280 |
Claims (7)
1. a kind of preparation method of ecological thin film dedicated filling mother stock, is characterized in that preparation method is carried out as follows：
1）Starch, Two-dimensional Inorganic thing are separately dried to aqueous and are less than 1%, then with mass ratio 100:（50-80）Mix homogeneously,
Under the conditions of nitrogen cryoprotection in Gas grinding machine dry state to be ground to Two-dimensional Inorganic nitride layer thick less than 100nm, make starch with
The Coating combination of Two-dimensional Inorganic thing, then disperses with liquid polyisobutylene in high speed dispersor, wraps liquid polyisobutylene
In Two-dimensional Inorganic thing, the surface of starch coalition；
2) by step（1）The material 70-80 weight portions for obtaining and inorganic spherical microgranule 5-10 weight portions, vector resin 10-20 weights
Amount part mix homogeneously, sends into twin screw reactive extrursion device, arranges twin screw reactive extrursion device temperature 100-150 DEG C, engine speed
For 200-300 rev/min, ecological thin film dedicated filling mother stock is obtained by continuous mixing, devolatilization, extrusion pelletizing.
2. a kind of preparation method of ecological thin film dedicated filling mother stock according to claim 1, it is characterised in that：Preparation method
Step 1）Described Two-dimensional Inorganic thing be in the Pulvis Talci with Rotating fields, mica powder, pyrophyllite powder, molybdenum disulphide powder at least
It is a kind of.
3. a kind of preparation method of ecological thin film dedicated filling mother stock according to claim 1, it is characterised in that：Preparation method
Step 1）Described liquid polyisobutylene usage amount is to be dried starch, the 3-5% of Two-dimensional Inorganic thing gross mass.
4. a kind of preparation method of ecological thin film dedicated filling mother stock according to claim 1, it is characterised in that：Preparation method
Step 1）Described Gas grinding machine selects flat air flow crusher, circulation pipe air flow crasher, rotary ejection type comminution by gas stream
Machine, injecting type jet mill, target formula jet mill, fluidized bed airflow pulverizer, Counter-impact flow pulverizer, supersonic speed
One kind in jet mill, eddy airstream pulverizer.
5. a kind of preparation method of ecological thin film dedicated filling mother stock according to claim 1, it is characterised in that：Preparation method
Step 2）Described inorganic spherical microgranule be particle diameter be less than 10 μm, sphericity more than 80% barium sulfate, ceramic microsphere, glass microballoon,
At least one in zinc sulfide.
6. a kind of preparation method of ecological thin film dedicated filling mother stock according to claim 1, it is characterised in that：Preparation method
Step 2）Described vector resin is polyethylene, polypropylene, polystyrene, polyethylene-propylene acid copolymer, polyethylene-acetic acid
At least one in ethylene copolymer, polylactic acid, poly butylene succinate, polycaprolactone.
7. a kind of ecological thin film dedicated filling mother stock, it is characterised in that by described in any one of claim 1-6 prepared by preparation method
The dedicated filling mother stock for obtaining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610905147.4A CN106565995B (en) | 2016-10-18 | 2016-10-18 | A kind of ecology film dedicated filling mother stock and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610905147.4A CN106565995B (en) | 2016-10-18 | 2016-10-18 | A kind of ecology film dedicated filling mother stock and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106565995A true CN106565995A (en) | 2017-04-19 |
| CN106565995B CN106565995B (en) | 2018-12-11 |
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| CN110607015A (en) * | 2019-08-31 | 2019-12-24 | 吴广龙 | Plastic light conversion agricultural film with lasting light conversion effect and preparation method thereof |
| CN111718500A (en) * | 2020-07-10 | 2020-09-29 | 贵州廿庆塑胶有限公司 | Filling master batch, preparation method and application thereof, and modified plastic |
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| CN111718500A (en) * | 2020-07-10 | 2020-09-29 | 贵州廿庆塑胶有限公司 | Filling master batch, preparation method and application thereof, and modified plastic |
| CN111718500B (en) * | 2020-07-10 | 2024-02-27 | 贵州廿庆塑胶有限公司 | Filling master batch, preparation method and application thereof, and modified plastic |
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| CN106565995B (en) | 2018-12-11 |
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