CN101434735B - Plant fibre reinforced biodegradable film material and preparation thereof - Google Patents
Plant fibre reinforced biodegradable film material and preparation thereof Download PDFInfo
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- CN101434735B CN101434735B CN 200710056319 CN200710056319A CN101434735B CN 101434735 B CN101434735 B CN 101434735B CN 200710056319 CN200710056319 CN 200710056319 CN 200710056319 A CN200710056319 A CN 200710056319A CN 101434735 B CN101434735 B CN 101434735B
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Abstract
The invention relates to a biodegradable thin-film material strengthened by plant fibers and a preparation method thereof. Raw materials and parts by weight thereof used are as follows: 20 parts to 45 parts of plant fibers, 30 parts to 50 parts of starch, 20 parts to 35 parts of vinyl monomers, 20 parts to 30 parts of biodegradable plastics, 10 parts to 15 parts of plasticizers, 3 parts to 5 parts of water and 0.5 part to 3 parts of heat stabilizers. The preparation method of the thin-film material comprises the steps: the plant fibers, starch, vinyl monomers and water of certain quantities are evenly mixed and radiated by a cobalt Gamma 60 source or an electron accelerator for 0.5kGy to 20kGy; the material after radiation is mixed with the biodegradable plastics, the plasticizers and the heat stabilizers; then a twin screw is used for preparing a thin-film special material; and finally the thin-film is formed by means of blow molding using a single screw. The completely biodegradable thin-film has good water resistance and heat combination performance and is applicable to producing farming terra films and packing films so as to solve the white pollution problem caused by the heavy use of oil-based plastic.
Description
Technical field
The present invention relates to a kind of production degradable film material and technology, more particularly, it is a kind of low-cost plant fibre reinforced biodegradable film material and preparation method thereof.
Background technology
In recent years, along with the growing interest of people to the resource and environment problem, produce the complete biodegradable membrane product with renewable resources, can be under state of nature after using have become people's research emphasis as microbiological degradation Cheng Shui and carbonic acid gas, in these researchs, starch is with its wide material sources, and is cheap and become global research and development focus.
At first people's developing focus is with Griffin, C.J.L. (Adv, Chem, Sci, 134 (1974) 159-170) technology is the thermoplastics of core, the biological disintegration plastics of starch mix type, owing to only is that starch is biodegradable in this series products, and other thermoplastic resin (as PE etc.) still can not after using, be biological degradation, so this class material is a kind of biological disintegration-type plastics in essence, from the eighties of last century the nineties, just abandoned by external main flow research institution gradually.
This type of is studied great technical progress and is finished by Italian Ferruxxi company, they use its relative quantity is the Biodegradable films (MPI1991 that the modified polyvinyl alcohol of 70% starch and 30% prepares, 100,9, P7), be called Mater-Bi, have the ability of degraded fully, and price is relatively low, is listed in one of three famous in the world big fully biodegradable plastics brands.The propaganda of its marketization and popularization activity have attracted a large amount of research institutions and enterprise to carry out similar work, but it is temperature tolerance that this class material has the weakness of a maximum, weathering resistance and water tolerance have limited its use range inadequately and seriously, as Mater-Bi it can not be beyond 0-50 ℃, use under low temperature, high temperature and the high humidity environment condition beyond the relative humidity 30-80%.This is owing to hydroxyl suctions a large amount of in starch and the polyvinyl alcohol causes, and simple blending and modifying can't solve this difficult problem.
People improve the performance of Mater-Bi by various different approaches for this reason, starch and water-fast polymer ratio finish but this modification is normally from adjusting, should change the preparation method that the Bai Fuchen of institute people such as (Chinese invention patents 02155324.6) provides a kind of starch-type complete degradable plastic as Chinese Academy of Sciences Changchun, they utilize super-refinement starch and Biodegradable polyester and polyolefin blend preparation exactly, and this material can be used for preparing film and have well utilizing water resistance.At present, few people consider to use grafting modified starch to realize the modification purpose, this is because the graft starch graft(ing) degree of traditional chemical method preparation is lower on the one hand, do not reach the purpose that reduces the starch water-intake rate, traditional on the other hand graft starch itself still can't carry out thermoplasticity processing, desiring to want to prepare starch film also needs a large amount of softening agent, and this will make the water-intake rate of goods increase.And radiation grafting technology production hydrophobicity modified starch just is in harmony and can be overcome above-mentioned shortcoming, to this Fanta (George F.Fanta Polymeric MaterialsEncyclopedia Vol (10) in its survey article, 7901, CRC Press, 1996) special argumentation arranged.Because the cost of large-scale industrialization irradiation processing in the past is high, reduced the cost performance of radiation modification graft starch, therefore so far for extremely, do not see the report that utilizes starch after the radiation modification to prepare biodegradable films.But constantly surging along with oil price at present, and the reduction of radiation processing cost makes the industrial applications of utilizing radiation modification starch technology to prepare biodegradable films become possibility.
Summary of the invention
The objective of the invention is to overcome the drawback that exists in the prior art, provide a kind of and can reduce water-absorbent after utilizing the starch radiation grafting, again can water-content than under the low condition directly thermoplastic process this characteristic, make full use of the enhancement of bio-degradable plastics mechanical mechanics property and vegetable fibre, overcome the application limitation of traditional starch plastic, develop that cost is low, intensity is high, biodegradable thin-film material, to satisfy the needs of new millennium human social.
Another object of the present invention provides the preparation method of this degradable film.
The raw material weight of plant fibre reinforced biodegradable film material of the present invention is composed as follows:
Vegetable fibre 20-45 starch 30-50 vinyl monomer 20-35
Bio-degradable plastics 20-30 softening agent 10-15, water 3-5
Thermo-stabilizer 0.5-3.
Described vegetable fibre is a bagasse, wood powder or straw powder, and its particle size range is between the 100-300 order;
Described starch is corn, Ma Lingzhu, wheat starch or tapioca (flour), and particle diameter is between the 80-300 order;
Described vinyl monomer is a methyl methacrylate, Jia Jibingxisuanyizhi, a kind of or its mixture in vinyl acetate or the vinylbenzene;
Described bio-degradable plastics is polycaprolactone or ethylene-vinyl alcohol copolymer;
Described softening agent is polyester polyol or 12 carbon alcohol esters;
Described polyester polyol is that Succinic Acid is to the ethylene glycol of certain herbaceous plants with big flowers diacid or the polycondensation ester of a condensed ethandiol;
Described thermo-stabilizer is an epoxy soybean oil.
Above-mentioned each component system is engaged in into the present invention---the preparation method of plant fibre reinforced biodegradable film material, its major technique is that the preparation method is after earlier a certain amount of vegetable fibre, starch, vinyl monomer and water being mixed, utilize the source of radiation irradiation grafting, material after the grafting is mixed (according to the above ratio) with bio-degradable plastics, softening agent and thermo-stabilizer again, utilize twin screw to prepare the film PP Pipe Compound then, use single screw rod blowing film forming at last.
Described source of radiation is cobalt source (γ cobalt 60) or rumbatron, and the radiation dose scope is 0.5-20kGy;
Described in utilizing twin screw or single screw rod course of processing, the temperature range of processing is between 120-190 ℃.
Its beneficial effect of plant fibre reinforced biodegradable film material that provides of the present invention and preparation method thereof is: (1) reduces the thin film fabrication cost, improves the water tolerance of film, increases film strength; (2) fully biodegradable of the present invention has good heat seal performance, is suitable for and production farmland film and packing film; (3) to solve the white pollution problems that caused owing to a large amount of uses of petroleum-based plastics; (4) among the present invention radiation-induced graft copolymerization adopt altogether radiation graft process to be because: 1) molecular weight of the graft product of preparation is less than 6000 like this, and this moment, graft product was can complete biodegradable; 2) the irradiation processing cost is low, thereby preparation has the degradable film that adds high performance-price ratio; (5) four kinds of vinyl monomers selecting for use are because they had both had higher repellency energy, and cost is again lower simultaneously; In the radiation grafting process, adopt the method for two kinds of vinyl monomer blend, make because this can improve the grafting productive rate; If there is not the participation of water in the irradiation process, the vinyl monomer tendency forms homopolymer, can produce detrimentally affect to film preparation subsequently and the water yield is too high, therefore just passable as long as add a spot of water in the present invention, the effect of softening agent is the toughness that increases film, and the effect of thermo-stabilizer is the thermal destruction that prevents bio-degradable plastics in the processing film process.
Embodiment
Embodiment 1:
Take by weighing 80 order W-Gum 5kg, methyl methacrylate 3.5kg after water 450g mixes, utilizes cobalt source irradiation 0.5kGy, 1kGy, 3kGy, 5kGy, 10kGy, 20kGy respectively.With the material behind the irradiation again with 100 order bagasse 2kg; ethylene-vinyl alcohol copolymer 3kg; softening agent EGS ethylene glycol succinate 1.5kg; and thermo-stabilizer epoxy soybean oil 50g; putting into the high-speed stirring machine stirs; add dual-screw-stem machine (Haake then with the heating of 8 districts; PTW--24) Heating temperature in 8 districts is respectively 120 in; 140; 160; 180; 195; 190; 180; 180 ℃; the material bar of extruding is used the dicing machine granulation after the cold water cooling; the masterbatch of making places vacuum drying oven oven dry 48 hours; single screw rod blowing film forming (single screw rod is Haake-252P), four district's Heating temperatures are 140; 170; 190; 180 ℃; head temperature is 175 ℃).
Embodiment 2:
Weight of material than with complete processing with embodiment 1, wherein W-Gum changes Ma Lingzhu into.
Embodiment 3:
Weight of material than with complete processing with embodiment 1, wherein W-Gum changes wheat starch into.
Embodiment 4:
Weight of material than with complete processing with embodiment 1, wherein W-Gum changes tapioca (flour) into.
Embodiment 5:
Weight of material than with complete processing with embodiment 1, wherein softening agent adopts 12 carbon alcohol esters.
Embodiment 6:
Take by weighing 100 order Ma Lingzhu 3kg, Jia Jibingxisuanyizhi 2kg after water 400g mixes, utilizes cobalt source irradiation 0.5kGy, 1kGy, 3kGy, 5kGy, 10kGy, 20kGy respectively.With the material behind the irradiation again with 100 order wood powder 4.5kg; ethylene-vinyl alcohol copolymer 2kg; softening agent pentanedioic acid ethylene glycol 1kg; and thermo-stabilizer epoxy soybean oil 300g; putting into the high-speed stirring machine stirs; add dual-screw-stem machine (Haake then with the heating of 8 districts; PTW--24) Heating temperature in 8 districts is respectively 120 in; 140; 160; 180; 195; 190; 180; 180 ℃; the material bar of extruding is used the dicing machine granulation after the cold water cooling; the masterbatch of making places vacuum drying oven oven dry 48 hours; (single screw rod is Haake-252P to single screw rod blowing film forming, and four district's Heating temperatures are 140; 170; 190; 180 ℃; head temperature is 175 ℃).
Embodiment 7:
Weight of material than with complete processing with embodiment 6, wherein wood powder changes bagasse into.
Embodiment 8:
Weight of material than with complete processing with embodiment 6, wherein wood powder changes straw powder into.
Embodiment 9:
Weight of material than with complete processing with embodiment 6, wherein Ma Lingzhu adopts 200 orders, softening agent adopts the pimelic acid glycol ester.
Embodiment 10:
Weight of material than with complete processing with embodiment 6, wherein wood powder adopts 200 orders, softening agent adopts 12 carbon alcohol esters.
Embodiment 11:
Take by weighing 200 order W-Gum 4kg, vinyl acetate 2.5kg after water 400g mixes, utilizes cobalt source irradiation 0.5kGy, 1kGy, 3kGy, 5kGy, 10kGy, 20kGy respectively.With the material behind the irradiation again with 150 order bagasse 3kg; ethylene-vinyl alcohol copolymer 2.5kg; softening agent adipate glycol 1.25kg; and thermo-stabilizer epoxy soybean oil 100g; putting into the high-speed stirring machine stirs; add dual-screw-stem machine (Haake then with the heating of 8 districts; PTW--24) Heating temperature in 8 districts is respectively 120 in; 140; 160; 180; 195; 190; 180; 180 ℃; the material bar of extruding is used the dicing machine granulation after the cold water cooling; the masterbatch of making places vacuum drying oven oven dry 48 hours; (single screw rod is Haake-252P to single screw rod blowing film forming, and four district's Heating temperatures are 140; 170; 190; 180 ℃; head temperature is 175 ℃).
Embodiment 12:
Weight of material than with complete processing with embodiment 11, wherein bagasse adopts 200 orders, softening agent adopts the suberic acid glycol ester.
Embodiment 13:
Weight of material than with complete processing with embodiment 11, wherein W-Gum changes 150 orders into, softening agent adopts the nonane diacid glycol ester.
Embodiment 14:
Weight of material than with complete processing with embodiment 11, wherein softening agent adopts a condensed ethandiol ester.
Embodiment 15: weight of material than with complete processing with embodiment 11, wherein softening agent adopts 12 carbon alcohol esters.
Embodiment 16:
Take by weighing 200 order W-Gum 4.5kg, vinylbenzene 2kg after water 400g mixes, utilizes rumbatron irradiation 0.5kGy, 1kGy, 3kGy, 5kGy, 10kGy, 20kGy respectively.With the material behind the irradiation again with 200 order bagasse 3.5kg; ethylene-vinyl alcohol copolymer 3kg; softening agent sebacic acid ethylene glycol 1kg; and thermo-stabilizer epoxy soybean oil 150g; putting into the high-speed stirring machine stirs; add dual-screw-stem machine (Haake then with the heating of 8 districts; PTW--24) Heating temperature in 8 districts is respectively 120 in; 140; 160; 180; 195; 190; 180; 180 ℃; the material bar of extruding is used the dicing machine granulation after the cold water cooling; the masterbatch of making places vacuum drying oven oven dry 48 hours; (single screw rod is Haake-252P to single screw rod blowing film forming, and four district's Heating temperatures are 140; 170; 190; 180 ℃; head temperature is 175 ℃).
Embodiment 17:
Weight of material than with complete processing with embodiment 16, wherein W-Gum adopts 100 orders, bagasse 100 orders.
Embodiment 18:
Weight of material than with complete processing with embodiment 16, wherein W-Gum adopts 300 orders, bagasse 300 orders.
Embodiment 19:
Weight of material than with complete processing with embodiment 16, wherein W-Gum changes Ma Lingzhu into.
Embodiment 20:
Weight of material than with complete processing with embodiment 16, wherein bagasse changes straw powder into, softening agent adopts 12 carbon alcohol esters.
Embodiment 21:
Take by weighing 200 order W-Gum 3.5kg, methyl methacrylate/Jia Jibingxisuanyizhi mixture (1:1 mixing) 2kg after water 300g mixes, utilizes brill source irradiation 0.5kGy, 1kGy, 3kGy, 5kGy, 10kGy, 20kGy respectively.With the material behind the irradiation again with 250 order bagasse 2.5kg; ethylene-vinyl alcohol copolymer 2kg; softening agent Succinic Acid ethylene glycol 1.25kg; and thermo-stabilizer epoxy soybean oil 100g; putting into the high-speed stirring machine stirs; add dual-screw-stem machine (Haake then with the heating of 8 districts; PTW--24) Heating temperature in 8 districts is respectively 120 in; 140; 160; 180; 195; 190; 180; 180 ℃; the material bar of extruding is used the dicing machine granulation after the cold water cooling; the masterbatch of making places vacuum drying oven oven dry 48 hours; (single screw rod is Haake-252P to single screw rod blowing film forming, and four district's Heating temperatures are 140; 170; 190; 180 ℃; head temperature is 175 ℃).
Embodiment 22:
Weight of material than with complete processing with embodiment 21, wherein methyl methacrylate/Jia Jibingxisuanyizhi mixture ratio changes 1: 2 into.
Embodiment 23: weight of material than with complete processing with embodiment 22, wherein methyl methacrylate/Jia Jibingxisuanyizhi mixture ratio changes 1: 3 into.
Embodiment 24:
Weight of material than with complete processing with embodiment 22, wherein methyl methacrylate/Jia Jibingxisuanyizhi mixture ratio changes 2: 1 into.
Embodiment 25:
Weight of material than with complete processing with embodiment 22, wherein methyl methacrylate/Jia Jibingxisuanyizhi mixture ratio changes 3: 1 into.
Embodiment 26:
Take by weighing 300 order W-Gum 4.5kg, methyl methacrylate/vinyl acetate between to for plastic ester mixture (mixing at 1: 1) 3kg after water 450g mixes, utilizes cobalt source irradiation 0.5kGy, 1kGy, 3kGy, 5kGy, 10kGy, 20kGy respectively.With the material behind the irradiation again with 300 order bagasse 4kg; polycaprolactone 3kg; softening agent 12 carbon alcohol ester 1.5kg; and thermo-stabilizer epoxy soybean oil 250g; putting into the high-speed stirring machine stirs; add dual-screw-stem machine (Haake then with the heating of 8 districts; PTW--24) Heating temperature in 8 districts is respectively 70 in; 75; 95; 105; 120; 115; 110; 100 ℃; the material bar of extruding is used the dicing machine granulation after the cold water cooling; the masterbatch of making places vacuum drying oven oven dry 48 hours; (single screw rod is Haake-252P to single screw rod blowing film forming, and four district's Heating temperatures are 90; 100; 120; 110 ℃; head temperature is 115 ℃).
Embodiment 27:
Weight of material than with complete processing with embodiment 26, wherein methyl methacrylate/vinyl acetate mixture ratio changes 2: 1 into, W-Gum adopts 200 orders.
Embodiment 28:
Weight of material than with complete processing with embodiment 26, wherein methyl methacrylate/vinyl acetate mixture ratio changes 3: 1 into, bagasse adopts 200 orders.
Embodiment 29:
Weight of material than with complete processing with embodiment 26, wherein bagasse changes straw powder into.
Embodiment 30:
Weight of material than with complete processing with embodiment 26, wherein W-Gum changes Tapioca Starch into.
Embodiment 31:
Take by weighing 200 order W-Gum 3kg, Jia Jibingxisuanyizhi/vinyl acetate between to for plastic ester mixture (mixing at 1: 1) 2.5kg after water 350g mixes, utilizes cobalt source irradiation 0.5kGy, 1kGy, 3kGy, 5kGy, 10kGy, 20kGy respectively.With the material behind the irradiation again with 300 order bagasse 3kg; polycaprolactone 2.5kg; softening agent one condensed ethandiol ester 1.25kg; and thermo-stabilizer epoxy soybean oil 200g; putting into the high-speed stirring machine stirs; add dual-screw-stem machine (Haake then with the heating of 8 districts; PTW--24) Heating temperature in 8 districts is respectively 70 in; 75; 95; 105; 120; 115; 110; 100 ℃; the material bar of extruding is used the dicing machine granulation after the cold water cooling; the masterbatch of making places vacuum drying oven oven dry 48 hours; (single screw rod is Haake-252P to single screw rod blowing film forming, and four district's Heating temperatures are 90; 100; 120; 110 ℃; head temperature is 115 ℃).
Embodiment 32:
Weight of material than with complete processing with embodiment 31, wherein methyl methacrylate/vinyl acetate mixture ratio changes 2: 1 into, bagasse changes wood powder into.
Embodiment 33:
Weight of material than with complete processing with embodiment 31, wherein methyl methacrylate/vinyl acetate mixture ratio changes 3: 1 into, W-Gum changes wheat starch into.
Embodiment 34: weight of material than with complete processing with embodiment 31, wherein methyl methacrylate/vinyl acetate mixture ratio changes 2: 1 into, bagasse changes straw powder into.
Embodiment 35:
Weight of material than with complete processing with embodiment 31, wherein methyl methacrylate/vinyl acetate mixture ratio changes 3: 1 into, W-Gum changes Ma Lingzhu into.
Embodiment 36:
Take by weighing 100 order W-Gum 4.5kg, Jia Jibingxisuanyizhi/styrene mixture (mixing at 1: 1) 3.5kg after water 500g mixes, utilizes cobalt source irradiation 0.5kGy, 1kGy, 3kGy, 5kGy, 10kGy, 20kGy respectively.With the material behind the irradiation again with 300 order bagasse 4.5kg; polycaprolactone 3kg; softening agent 12 carbon alcohol ester 1.5kg; and thermo-stabilizer epoxy soybean oil 300g; putting into the high-speed stirring machine stirs; add dual-screw-stem machine (Haake then with the heating of 8 districts; PTW--24) Heating temperature in 8 districts is respectively 70 in; 75; 95; 105; 120; 115; 110; 100 ℃; the material bar of extruding is used the dicing machine granulation after the cold water cooling; the masterbatch of making places vacuum drying oven oven dry 48 hours; (single screw rod is Haake-252P to single screw rod blowing film forming, and four district's Heating temperatures are 90; 100; 120; 110 ℃; head temperature is 115 ℃).
Embodiment 37:
Weight of material than with complete processing with embodiment 36, wherein Jia Jibingxisuanyizhi/styrene mixture proportioning made into 2: 1, W-Gum changes 200 orders into.
Embodiment 38: weight of material than with complete processing with embodiment 36, wherein Jia Jibingxisuanyizhi/styrene mixture proportioning made into 3: 1, W-Gum changes 300 orders into.
Embodiment 39:
Weight of material than with complete processing with embodiment 36, wherein Jia Jibingxisuanyizhi/styrene mixture proportioning made into 4: 1, bagasse changes wood powder into.
Embodiment 40:
Take by weighing 100 order W-Gum 3.5kg, vinyl acetate/styrene mixture (mixing at 1: 1) 2.5kg after water 400g mixes, utilizes cobalt source irradiation 0.5kGy, 1kGy, 3kGy, 5kGy, 10kGy, 20kGy respectively.With the material behind the irradiation again with 250 order bagasse 3.5kg; polycaprolactone 3kg; softening agent one condensed ethandiol ester 1.5kg; and thermo-stabilizer epoxy soybean oil 250g; putting into the high-speed stirring machine stirs; add dual-screw-stem machine (Haake then with the heating of 8 districts; PTW--24) Heating temperature in 8 districts is respectively 70 in; 75; 95; 105; 120; 115; 110; 100 ℃; the material bar of extruding is used the dicing machine granulation after the cold water cooling; the masterbatch of making places vacuum drying oven oven dry 48 hours; (single screw rod is Haake-252P to single screw rod blowing film forming, and four district's Heating temperatures are 90; 100; 120; 110 ℃; head temperature is 115 ℃).
Embodiment 41:
Weight of material than with complete processing with embodiment 40, wherein vinyl acetate/styrene mixture proportioning made into 2: 1, W-Gum 200 orders.
Embodiment 42: weight of material than with complete processing with embodiment 40, vinyl acetate wherein, the styrene mixture proportioning made into 2: 1, bagasse 200 orders.
Embodiment 43: weight of material than with complete processing with embodiment 40, vinyl acetate wherein, the styrene mixture proportioning made into 1: 2, W-Gum changes Tapioca Starch into.
Embodiment 44:
Take by weighing 300 order W-Gum 3.5kg, Jia Jibingxisuanyizhi/vinyl acetate between to for plastic ester mixture (mixing at 1: 1) 2.5kg after water 450g mixes, utilizes rumbatron irradiation 0.5kGy, 1kGy, 3kGy, 5kGy, 10kGy, 20kGy respectively.With the material behind the irradiation again with 150 order bagasse 3kg; polycaprolactone 3.5kg; softening agent 12 carbon alcohol ester 2kg; and thermo-stabilizer epoxy soybean oil 250g; putting into the high-speed stirring machine stirs; add dual-screw-stem machine (Haake then with the heating of 8 districts; PTW--24) Heating temperature in 8 districts is respectively 70 in; 75; 95; 105; 120; 115; 110; 100 ℃; the material bar of extruding is used the dicing machine granulation after the cold water cooling; the masterbatch of making places vacuum drying oven oven dry 48 hours; (single screw rod is Haake-252P to single screw rod blowing film forming, and four district's Heating temperatures are 90; 100; 120; 110 ℃; head temperature is 115 ℃).
Embodiment 45:
Weight of material than with complete processing with embodiment 44, wherein Jia Jibingxisuanyizhi/vinyl acetate mixture ratio made into 2: 1.
Embodiment 46:
Material and complete processing are with embodiment 44, and wherein Jia Jibingxisuanyizhi/vinyl acetate mixture ratio made into 2: 1, and bagasse changes wood powder into.
Embodiment 47: material and complete processing are with embodiment 44, and wherein Jia Jibingxisuanyizhi/vinyl acetate mixture ratio made into 2: 1, and W-Gum changes wheat starch into.
Claims (5)
1. plant fibre reinforced biodegradable film material is characterized in that it is to be made by the starting material of following weight proportioning:
Vegetable fibre 20-45 starch 30-50 vinyl monomer 20-35
Bio-degradable plastics 20-30 softening agent 10-15 water 3-5
Thermo-stabilizer 0.5-3;
Described vegetable fibre is bagasse, wood powder or straw powder, and its particle size range is between the 100-300 order, and starch is corn, Ma Lingzhu, wheat starch or tapioca (flour), and particle diameter is between the 80-300 order;
Described vinyl monomer is a kind of or its mixture in methyl methacrylate, Jia Jibingxisuanyizhi, vinyl acetate or the vinylbenzene;
Described bio-degradable plastics is polycaprolactone or ethylene-vinyl alcohol copolymer, and described softening agent is polyester polyol or 12 carbon alcohol esters;
Its preparation method is as follows: after earlier vegetable fibre, starch, vinyl monomer and water being mixed, utilize the source of radiation irradiation grafting, material after the grafting is mixed with bio-degradable plastics, softening agent and thermo-stabilizer again, utilize twin screw to prepare the film PP Pipe Compound then, use single screw rod blowing film forming at last;
Described source of radiation is cobalt source or rumbatron, and the radiation dose scope is 0.5-20kGy;
Described in utilizing twin screw or single screw rod course of processing, temperature range is between 120-190 ℃.
2. a kind of plant fibre reinforced biodegradable film material according to claim 1 is characterized in that wherein each raw-material weight proportioning is:
Vegetable fibre 32 starch 40 vinyl monomers 27
Bio-degradable plastics 25 softening agent 14 water 4
Thermo-stabilizer 1.4.
3. a kind of plant fibre reinforced biodegradable film material according to claim 1 is characterized in that described polyester polyol is that Succinic Acid is to the ethylene glycol of certain herbaceous plants with big flowers diacid or the polycondensation ester of a condensed ethandiol.
4. a kind of plant fibre reinforced biodegradable film material as claimed in claim 1 is characterized in that described thermo-stabilizer is an epoxy soybean oil.
5. the preparation method of a kind of plant fibre reinforced biodegradable film material according to claim 1, it is characterized in that: after earlier vegetable fibre, starch, vinyl monomer and water being mixed, utilize the source of radiation irradiation grafting, material after the grafting is mixed with bio-degradable plastics, softening agent and thermo-stabilizer again, utilize twin screw to prepare the film PP Pipe Compound then, use single screw rod blowing film forming at last;
Described source of radiation is cobalt source or rumbatron, and the radiation dose scope is 0.5-20kGy;
Described in utilizing twin screw or single screw rod course of processing, temperature range is between 120-190 ℃.
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| CN102977565A (en) * | 2012-11-23 | 2013-03-20 | 金发科技股份有限公司 | Starch-containing biodegradable barrier-property film as well as preparation method and application thereof |
| CN103834093B (en) * | 2014-03-19 | 2016-08-17 | 福建师范大学 | A kind of ethylene-vinyl alcohol copolymer sill plastic composite board |
| CN103819809B (en) * | 2014-03-19 | 2016-05-04 | 福建师范大学 | A kind of ethylene-vinyl alcohol copolymer base wood-plastic composite material |
| CN105830827A (en) * | 2016-03-31 | 2016-08-10 | 太仓市新华粮食生产专业合作社 | High strength degradable agricultural film |
| CN106349669B (en) * | 2016-09-26 | 2019-05-03 | 中国热带农业科学院农产品加工研究所 | A kind of bagasse biodegradable plastics and preparation method thereof |
| CN108410145B (en) * | 2018-03-23 | 2021-02-23 | 河南省科学院同位素研究所有限责任公司 | Method for preparing straw fiber/PBAT composite material based on radiation modification |
| CN112300542A (en) * | 2019-07-29 | 2021-02-02 | 罗惠民 | Nanoscale plant fiber modified biodegradable composite material and preparation method and application thereof |
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| CN1357562A (en) * | 2001-12-29 | 2002-07-10 | 北京凯奇北方环保材料技术开发有限公司 | Composition for producing foamed plant starch packing material capable of being degraded completely |
| CN1990946A (en) * | 2005-12-31 | 2007-07-04 | 戴建荣 | Preparation method and application of ceiba fiber in spinning and weave field |
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