CN109627723A - A kind of surface clean environment-friendly materials - Google Patents
A kind of surface clean environment-friendly materials Download PDFInfo
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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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- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C08K5/13—Phenols; Phenolates
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- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
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Abstract
The invention belongs to environment-friendly materials technical fields, and in particular to a kind of surface clean environment-friendly materials；Its ingredient includes: polylactic acid, cornstarch, grafting modified of starch agent, chitosan, surface treating agent, nano silica, nano-titanium dioxide, lignocellulosic, polyvinyl alcohol, anti ultraviolet agent, polyethylene glycol and chain extender；Surface clean environment-friendly materials prepared by the present invention use polylactic acid, cornstarch for primary raw material, so that thin-film material is had biodegradable, reduce white pollution；After extrusion-blown modling, lignocellulosic in forming tridimensional network in film, can improve intensity, support force and the endurance of thin-film material；During melting extrusion blow molding, nano silica and nano-titanium dioxide are dissociated by floating effect forms protrusion to the surface of film, the hydrophobicity for improving film surface, avoids that dust, soil etc. are dirty to be caused to block to light, it is ensured that the illuminance in canopy.
Description
Technical field
The invention belongs to environment-friendly materials technical fields, and in particular to a kind of surface clean environment-friendly materials.
Background technique
With the generation of high molecular polymer-polyvinyl chloride, polyethylene, plastic film is widely used in agricultural.Japan and
American-European countries succeeds in the initial stage fifties using greenhouse film covering breeding ground, and subsequent covering hut and greenhouse again also obtain good
Good effect.China introduces poly agricultural film in autumn nineteen fifty-five, covers vegetables for hut in Beijing first, obtains morning
The effect of ripe volume increase.Greenhouse original is the special equipment of vegetables production, as the application for developing greenhouse of production is all the more extensive.Currently
Greenhouse has been used for potted flower and cut-flower cultivation；Production of fruit trees is for cultivating grape, strawberry, watermelon, muskmelon, peach and citrus etc.；Forestry
Production is for forest seedling growth, culture of ornamental trees etc.；Aquaculture for breeding silkworms, raising chickens, cowboying, pig raising, fish and fry etc..
Up to the present, national greenhouse area has been basically stable at more than 10 ten thousand mu.Wherein northern China arid biogeographic zone each province,
There are about more than 70,000 mu in city.It is expected that greenhouse cultivation area will develop to 200,000 mu or so during " the Seventh Five-Year Plan ".The material of plastic house is modeling
Expect film.It is covered suitable for large area, because of its light weight, transparent heat insulating performance is good, and plasticity is strong, cheap.Again due to can
Using light framework material, it is easy construction and appearance, lattice can be taken on the spot, construction investment is less, and economic benefit is higher.And it can support
Anti- natural calamity, cold-proof heat insulation, drought resisting, flood are cultivated, delayed culture ahead of time, extend the growth period of crop, reach it is precocious, late-maturing,
Increase production the purpose of stable yields, the deep welcome by the producer.
The film that traditional greenhouse uses is usually the plastic film of polyethylene or polyvinyl chloride, in the long-term use,
Its surface be easily adhered dust, soil with it is dirty, be not easily cleaned, reduce the translucency of film, to reduce in greenhouse
Illuminance is easy to impact the growth of canopy implants；In addition, polyethylene, polyvinyl chloride plastic film after discarded not
It is degradable, easily cause white pollution.Therefore, a kind of degradable environment-friendlythin thin film material easy to clean is developed, for reducing white
It pollutes, guarantee that crop growth is of great significance.
Summary of the invention
The present invention provides a kind of surface clean environment-friendly materials, this kind of surface clean thin-film material is not only easy to degrade, also
Convenient for film surface attachment and dirty cleaning, it is ensured that the translucency of film makes the illuminance in canopy be protected, and is suitable for
It promotes the use of.
In order to achieve the above purpose, the following technical solution is employed by the present invention:
A kind of surface clean environment-friendly materials, ingredient by weight: 320-380 parts of polylactic acid, cornstarch 200-280
Part, 80-100 parts of grafting modified of starch agent, 60-90 parts of chitosan, 15-18 parts of surface treating agent, nano silica 12-16
Part, is gathered 19-25 parts of nano-titanium dioxide, 45-60 parts of lignocellulosic, 150-180 parts of polyvinyl alcohol, 6-12 parts of anti ultraviolet agent
20-25 parts and chain extender 30-55 parts of ethylene glycol；Preparation method includes the following steps:
A, it by the cornstarch investment high-speed mixer after drying, is risen under the mixing speed of 350-500r/min
Temperature heating is added polyethylene glycol when being warming up to 60-75 DEG C and continues to stir, and after stirring 30min, equivalent is added in interval in three times
Grafting modified of starch agent continues to stir 30-60min after grafting modified of starch agent is added completely into, and obtains modified graft starch；
B, chitosan, surface treating agent, wood fibre, nano-titanium dioxide are added to height together with nano silica
It is stirred mixing 45-60min in fast mixing machine, obtains mixed component A；
C, modified graft starch, mixed component A, polylactic acid, chain extender, polyvinyl alcohol and anti ultraviolet agent are added to high speed
In mixing machine, it is stirred 60-90min under conditions of 650-800r/min, 60-85 DEG C, obtains mixed component B；
D, mixed component B is added to melting extrusion in dual-screw pelletizer to be granulated, particulate material is made；
E, extrusion-blown modling is carried out using particulate material obtained in step d, above-mentioned surface clean environment-friendlythin thin film material is made.
Preferably, the polylactic acid is PLA 4032D, PLA 2003D or PLA 2500HP.
Preferably, any one in titanate coupling agent and aluminate coupling agent is selected in the grafting modified of starch agent.
Preferably, the surface treating agent selects any one in silane coupling agent and maleic anhydride or two kinds.
Preferably, the water-reducing agent selects any one in high performance water reducing agent of polyocarboxy acid or aminosulfonate-based superplasticizer.
Preferably, the anti ultraviolet agent selects septichen phenyl ester, 2,4-DihydroxyBenzophenone, 2- hydroxyl -4-
Any two kinds or three in methoxy benzophenone, 2-hydroxy-4-n-octoxybenzophenone, ortho-nitraniline or p-cresol
The combination of kind.
Preferably, the chain extender select in ADR-4370s, ADR-4368C/CS, ADR-4380-3 any one or
Multiple combinations.
Preferably, the interval time that grafting modified of starch agent is added in step a in three times is 15-30min.
Preferably, in step d double screw extruder technological parameter: 100-130 DEG C of feed zone, 150-175 DEG C of melt zone,
165-185 DEG C of homogenizing zone, 140-160 DEG C of extruding zone, engine speed 350-600r/min.
Using above-mentioned technical solution, the beneficial effect that the present invention reaches is:
Surface clean environment-friendly materials prepared by the present invention use polylactic acid, cornstarch for primary raw material, make thin-film material
With biodegradable, white pollution is reduced；Lignocellulosic has excellent flexibility and dispersibility, in extrusion-blown modling
Afterwards, lignocellulosic in forming tridimensional network in film, can improve intensity, support force and the endurance of thin-film material,
The ultra-violet resistance that the addition of anti ultraviolet agent enhances thin-film material slows down the aging of film；In the process of melting extrusion blow molding
In, nano silica and nano-titanium dioxide act on dissociating and form protrusion to the surface of film by floating, improve film
The hydrophobicity on surface, the dirty dust and soil of film surface can be sent out under the external force of gravity, wind-force or rainwater with film
It is estranged from avoiding that dust, soil etc. are dirty to be caused to block to light, it is ensured that the illuminance in canopy.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is the present invention one
Divide embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
Every other embodiment obtained, shall fall within the protection scope of the present invention under the premise of creative work.
Embodiment 1:
A kind of surface clean environment-friendly materials, ingredient by weight: 320 parts of polylactic acid, 260 parts of cornstarch, starch
80 parts of graft modification agent, 90 parts of chitosan, 15 parts of surface treating agent, 14 parts of nano silica, 19 parts of nano-titanium dioxide, wood
50 parts of matter cellulose, 150 parts of polyvinyl alcohol, 6 parts of anti ultraviolet agent, 20 parts of polyethylene glycol and 35 parts of chain extender；Preparation method packet
Include following steps:
A, by the investment high-speed mixer of the cornstarch after drying, heating is carried out under the mixing speed of 350r/min and is added
Heat is added polyethylene glycol when being warming up to 60 DEG C and continues to stir, and after stirring 30min, the starch that equivalent is added in interval in three times is connect
Branch modifying agent continues to stir 30min after grafting modified of starch agent is added completely into, and obtains modified graft starch；
B, chitosan, surface treating agent, wood fibre, nano-titanium dioxide are added to height together with nano silica
It is stirred mixing 45min in fast mixing machine, obtains mixed component A；
C, modified graft starch, mixed component A, polylactic acid, chain extender, polyvinyl alcohol and anti ultraviolet agent are added to high speed
In mixing machine, it is stirred 60min under conditions of 650r/min, 60 DEG C, obtains mixed component B；
D, mixed component B is added to melting extrusion in dual-screw pelletizer to be granulated, particulate material is made；
E, extrusion-blown modling is carried out using particulate material obtained in step d, above-mentioned surface clean environment-friendlythin thin film material is made.
Polylactic acid is PLA 4032D, PLA 2003D or PLA 2500HP.
Any one in titanate coupling agent and aluminate coupling agent is selected in grafting modified of starch agent.
Surface treating agent selects any one or two kinds in silane coupling agent and maleic anhydride.
Water-reducing agent selects any one in high performance water reducing agent of polyocarboxy acid or aminosulfonate-based superplasticizer.
Anti ultraviolet agent selects septichen phenyl ester, 2,4-DihydroxyBenzophenone, 2- hydroxyl -4- methoxyl group hexichol first
Any two or three of combination in ketone, 2-hydroxy-4-n-octoxybenzophenone, ortho-nitraniline or p-cresol.
Chain extender selects any one or more combination in ADR-4370s, ADR-4368C/CS, ADR-4380-3.
The interval time that grafting modified of starch agent is added in step a in three times is 15min.
The technological parameter of double screw extruder in step d: it 100 DEG C of feed zone, 150 DEG C of melt zone, 165 DEG C of homogenizing zone, squeezes
140 DEG C of section out, engine speed 350r/min.
After tested, the surface clean environment-friendly materials of the present embodiment, tensile strength 57.4MPa, elongation at break 126%, thoroughly
After light rate is greater than 93%, 3 months, the degradation rate of environment-friendly materials is 86.9%.
Embodiment 2:
A kind of surface clean environment-friendly materials, ingredient by weight: 330 parts of polylactic acid, 200 parts of cornstarch, starch
85 parts of graft modification agent, 80 parts of chitosan, 16 parts of surface treating agent, 15 parts of nano silica, 22 parts of nano-titanium dioxide, wood
45 parts of matter cellulose, 160 parts of polyvinyl alcohol, 9 parts of anti ultraviolet agent, 21 parts of polyethylene glycol and 40 parts of chain extender；Preparation method packet
Include following steps:
A, by the investment high-speed mixer of the cornstarch after drying, heating is carried out under the mixing speed of 400r/min and is added
Heat is added polyethylene glycol when being warming up to 65 DEG C and continues to stir, and after stirring 30min, the starch that equivalent is added in interval in three times is connect
Branch modifying agent continues to stir 35min after grafting modified of starch agent is added completely into, and obtains modified graft starch；
B, chitosan, surface treating agent, wood fibre, nano-titanium dioxide are added to height together with nano silica
It is stirred mixing 45min in fast mixing machine, obtains mixed component A；
C, modified graft starch, mixed component A, polylactic acid, chain extender, polyvinyl alcohol and anti ultraviolet agent are added to high speed
In mixing machine, it is stirred 65min under conditions of 700r/min, 70 DEG C, obtains mixed component B；
D, mixed component B is added to melting extrusion in dual-screw pelletizer to be granulated, particulate material is made；
E, extrusion-blown modling is carried out using particulate material obtained in step d, above-mentioned surface clean environment-friendlythin thin film material is made.
Polylactic acid is PLA 4032D, PLA 2003D or PLA 2500HP.
Any one in titanate coupling agent and aluminate coupling agent is selected in grafting modified of starch agent.
Surface treating agent selects any one or two kinds in silane coupling agent and maleic anhydride.
Water-reducing agent selects any one in high performance water reducing agent of polyocarboxy acid or aminosulfonate-based superplasticizer.
Anti ultraviolet agent selects septichen phenyl ester, 2,4-DihydroxyBenzophenone, 2- hydroxyl -4- methoxyl group hexichol first
Any two or three of combination in ketone, 2-hydroxy-4-n-octoxybenzophenone, ortho-nitraniline or p-cresol.
Chain extender selects any one or more combination in ADR-4370s, ADR-4368C/CS, ADR-4380-3.
The interval time that grafting modified of starch agent is added in step a in three times is 20min.
The technological parameter of double screw extruder in step d: it 110 DEG C of feed zone, 160 DEG C of melt zone, 170 DEG C of homogenizing zone, squeezes
145 DEG C of section out, engine speed 450r/min.
After tested, the surface clean environment-friendly materials of the present embodiment, tensile strength 57.6MPa, elongation at break 122%, thoroughly
After light rate is greater than 92%, 3 months, the degradation rate of environment-friendly materials is 87.1%.
Embodiment 3:
A kind of surface clean environment-friendly materials, ingredient by weight: 350 parts of polylactic acid, 220 parts of cornstarch, starch
90 parts of graft modification agent, 60 parts of chitosan, 16 parts of surface treating agent, 12 parts of nano silica, 23 parts of nano-titanium dioxide, wood
60 parts of matter cellulose, 170 parts of polyvinyl alcohol, 10 parts of anti ultraviolet agent, 22 parts of polyethylene glycol and 30 parts of chain extender；Preparation method packet
Include following steps:
A, by the investment high-speed mixer of the cornstarch after drying, heating is carried out under the mixing speed of 450r/min and is added
Heat is added polyethylene glycol when being warming up to 70 DEG C and continues to stir, and after stirring 30min, the starch that equivalent is added in interval in three times is connect
Branch modifying agent continues to stir 45min after grafting modified of starch agent is added completely into, and obtains modified graft starch；
B, chitosan, surface treating agent, wood fibre, nano-titanium dioxide are added to height together with nano silica
It is stirred mixing 50min in fast mixing machine, obtains mixed component A；
C, modified graft starch, mixed component A, polylactic acid, chain extender, polyvinyl alcohol and anti ultraviolet agent are added to high speed
In mixing machine, it is stirred 75min under conditions of 750r/min, 75 DEG C, obtains mixed component B；
D, mixed component B is added to melting extrusion in dual-screw pelletizer to be granulated, particulate material is made；
E, extrusion-blown modling is carried out using particulate material obtained in step d, above-mentioned surface clean environment-friendlythin thin film material is made.
Polylactic acid is PLA 4032D, PLA 2003D or PLA 2500HP.
Any one in titanate coupling agent and aluminate coupling agent is selected in grafting modified of starch agent.
Surface treating agent selects any one or two kinds in silane coupling agent and maleic anhydride.
Water-reducing agent selects any one in high performance water reducing agent of polyocarboxy acid or aminosulfonate-based superplasticizer.
Anti ultraviolet agent selects septichen phenyl ester, 2,4-DihydroxyBenzophenone, 2- hydroxyl -4- methoxyl group hexichol first
Any two or three of combination in ketone, 2-hydroxy-4-n-octoxybenzophenone, ortho-nitraniline or p-cresol.
Chain extender selects any one or more combination in ADR-4370s, ADR-4368C/CS, ADR-4380-3.
The interval time that grafting modified of starch agent is added in step a in three times is 20min.
The technological parameter of double screw extruder in step d: it 120 DEG C of feed zone, 165 DEG C of melt zone, 175 DEG C of homogenizing zone, squeezes
150 DEG C of section out, engine speed 500r/min.
After tested, the surface clean environment-friendly materials of the present embodiment, tensile strength 57.2MPa, elongation at break 128%, thoroughly
After light rate is greater than 90%, 3 months, the degradation rate of environment-friendly materials is 86.6%.
Embodiment 4:
A kind of surface clean environment-friendly materials, ingredient by weight: 370 parts of polylactic acid, 240 parts of cornstarch, starch
95 parts of graft modification agent, 70 parts of chitosan, 17 parts of surface treating agent, 16 parts of nano silica, 24 parts of nano-titanium dioxide, wood
50 parts of matter cellulose, 160 parts of polyvinyl alcohol, 12 parts of anti ultraviolet agent, 23 parts of polyethylene glycol and 45 parts of chain extender；Preparation method packet
Include following steps:
A, by the investment high-speed mixer of the cornstarch after drying, heating is carried out under the mixing speed of 450r/min and is added
Heat is added polyethylene glycol when being warming up to 70 DEG C and continues to stir, and after stirring 30min, the starch that equivalent is added in interval in three times is connect
Branch modifying agent continues to stir 55min after grafting modified of starch agent is added completely into, and obtains modified graft starch；
B, chitosan, surface treating agent, wood fibre, nano-titanium dioxide are added to height together with nano silica
It is stirred mixing 55min in fast mixing machine, obtains mixed component A；
C, modified graft starch, mixed component A, polylactic acid, chain extender, polyvinyl alcohol and anti ultraviolet agent are added to high speed
In mixing machine, it is stirred 80min under conditions of 750r/min, 80 DEG C, obtains mixed component B；
D, mixed component B is added to melting extrusion in dual-screw pelletizer to be granulated, particulate material is made；
E, extrusion-blown modling is carried out using particulate material obtained in step d, above-mentioned surface clean environment-friendlythin thin film material is made.
Polylactic acid is PLA 4032D, PLA 2003D or PLA 2500HP.
Any one in titanate coupling agent and aluminate coupling agent is selected in grafting modified of starch agent.
Surface treating agent selects any one or two kinds in silane coupling agent and maleic anhydride.
Water-reducing agent selects any one in high performance water reducing agent of polyocarboxy acid or aminosulfonate-based superplasticizer.
Anti ultraviolet agent selects septichen phenyl ester, 2,4-DihydroxyBenzophenone, 2- hydroxyl -4- methoxyl group hexichol first
Any two or three of combination in ketone, 2-hydroxy-4-n-octoxybenzophenone, ortho-nitraniline or p-cresol.
Chain extender selects any one or more combination in ADR-4370s, ADR-4368C/CS, ADR-4380-3.
The interval time that grafting modified of starch agent is added in step a in three times is 25min.
The technological parameter of double screw extruder in step d: it 120 DEG C of feed zone, 170 DEG C of melt zone, 180 DEG C of homogenizing zone, squeezes
155 DEG C of section out, engine speed 550r/min.
After tested, the surface clean environment-friendly materials of the present embodiment, tensile strength 57.2MPa, elongation at break 126%, thoroughly
After light rate is greater than 91%, 3 months, the degradation rate of environment-friendly materials is 87.8%.
Embodiment 5:
A kind of surface clean environment-friendly materials, ingredient by weight: 380 parts of polylactic acid, 280 parts of cornstarch, starch
100 parts of graft modification agent, 80 parts of chitosan, 18 parts of surface treating agent, 13 parts of nano silica, 25 parts of nano-titanium dioxide,
55 parts of lignocellulosic, 180 parts of polyvinyl alcohol, 8 parts of anti ultraviolet agent, 25 parts of polyethylene glycol and 55 parts of chain extender；Preparation method
The following steps are included:
A, by the investment high-speed mixer of the cornstarch after drying, heating is carried out under the mixing speed of 500r/min and is added
Heat is added polyethylene glycol when being warming up to 75 DEG C and continues to stir, and after stirring 30min, the starch that equivalent is added in interval in three times is connect
Branch modifying agent continues to stir 60min after grafting modified of starch agent is added completely into, and obtains modified graft starch；
B, chitosan, surface treating agent, wood fibre, nano-titanium dioxide are added to height together with nano silica
It is stirred mixing 60min in fast mixing machine, obtains mixed component A；
C, modified graft starch, mixed component A, polylactic acid, chain extender, polyvinyl alcohol and anti ultraviolet agent are added to high speed
In mixing machine, it is stirred 90min under conditions of 800r/min, 85 DEG C, obtains mixed component B；
D, mixed component B is added to melting extrusion in dual-screw pelletizer to be granulated, particulate material is made；
E, extrusion-blown modling is carried out using particulate material obtained in step d, above-mentioned surface clean environment-friendlythin thin film material is made.
Polylactic acid is PLA 4032D, PLA 2003D or PLA 2500HP.
Any one in titanate coupling agent and aluminate coupling agent is selected in grafting modified of starch agent.
Surface treating agent selects any one or two kinds in silane coupling agent and maleic anhydride.
Water-reducing agent selects any one in high performance water reducing agent of polyocarboxy acid or aminosulfonate-based superplasticizer.
Anti ultraviolet agent selects septichen phenyl ester, 2,4-DihydroxyBenzophenone, 2- hydroxyl -4- methoxyl group hexichol first
Any two or three of combination in ketone, 2-hydroxy-4-n-octoxybenzophenone, ortho-nitraniline or p-cresol.
Chain extender selects any one or more combination in ADR-4370s, ADR-4368C/CS, ADR-4380-3.
The interval time that grafting modified of starch agent is added in step a in three times is 30min.
The technological parameter of double screw extruder in step d: it 130 DEG C of feed zone, 175 DEG C of melt zone, 185 DEG C of homogenizing zone, squeezes
160 DEG C of section out, engine speed 600r/min.
After tested, the surface clean environment-friendly materials of the present embodiment, tensile strength 57.8MPa, elongation at break 123%, thoroughly
After light rate is greater than 93%, 3 months, the degradation rate of environment-friendly materials is 87.5%.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (8)
1. a kind of surface clean environment-friendly materials, which is characterized in that its ingredient by weight: 320-380 parts of polylactic acid, corn form sediment
200-280 parts of powder, 80-100 parts of grafting modified of starch agent, 60-90 parts of chitosan, 15-18 parts of surface treating agent, nanometer titanium dioxide
12-16 parts of silicon, 19-25 parts of nano-titanium dioxide, 45-60 parts of lignocellulosic, 150-180 parts of polyvinyl alcohol, anti ultraviolet agent 6-
12 parts, 20-25 parts of polyethylene glycol and 30-55 parts of chain extender；Preparation method includes the following steps:
A, by the investment high-speed mixer of the cornstarch after drying, heating is carried out under the mixing speed of 350-500r/min and is added
Heat is added polyethylene glycol when being warming up to 60-75 DEG C and continues to stir, and after stirring 30min, the starch of equivalent is added in interval in three times
Graft modification agent continues to stir 30-60min after grafting modified of starch agent is added completely into, and obtains modified graft starch；
B, chitosan, surface treating agent, wood fibre, nano-titanium dioxide high speed is added to mix together with nano silica
It is stirred mixing 45-60min in conjunction machine, obtains mixed component A；
C, modified graft starch, mixed component A, polylactic acid, chain extender, polyvinyl alcohol and anti ultraviolet agent are added to mixed at high speed
In machine, it is stirred 60-90min under conditions of 650-800r/min, 60-85 DEG C, obtains mixed component B；
D, mixed component B is added to melting extrusion in dual-screw pelletizer to be granulated, particulate material is made；
E, extrusion-blown modling is carried out using particulate material obtained in step d, above-mentioned surface clean environment-friendlythin thin film material is made.
2. a kind of surface clean environment-friendly materials according to claim 1, it is characterised in that: the polylactic acid is PLA
4032D, PLA 2003D or PLA 2500HP.
3. a kind of surface clean environment-friendly materials according to claim 1, it is characterised in that: the grafting modified of starch agent choosing
With any one in titanate coupling agent and aluminate coupling agent.
4. a kind of surface clean environment-friendly materials according to claim 1, it is characterised in that: the surface treating agent selects silicon
Any one in alkane coupling agent and maleic anhydride or two kinds.
5. a kind of surface clean environment-friendly materials according to claim 1, it is characterised in that: the anti ultraviolet agent selects adjacent hydroxyl
Yl benzoic acid phenyl ester, 2,4-DihydroxyBenzophenone, ESCALOL 567,2- hydroxyl -4- n-octyloxy hexichol
Any two or three of combination in ketone, ortho-nitraniline or p-cresol.
6. a kind of surface clean environment-friendly materials according to claim 1, it is characterised in that: the chain extender selects ADR-
Any one or more combination in 4370s, ADR-4368C/CS, ADR-4380-3.
7. a kind of surface clean environment-friendly materials according to claim 1, it is characterised in that: be added and form sediment in three times in step a
The interval time of powder graft modification agent is 15-30min.
8. a kind of surface clean environment-friendly materials according to claim 1, it is characterised in that: double screw extruder in step d
Technological parameter: it is 100-130 DEG C of feed zone, 150-175 DEG C of melt zone, 165-185 DEG C of homogenizing zone, 140-160 DEG C of extruding zone, main
Machine revolving speed is 350-600r/min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111286178A (en) * | 2020-04-15 | 2020-06-16 | 广东省生物工程研究所（广州甘蔗糖业研究所） | Antibacterial degradable blown film material and preparation method and application thereof |
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