CN105001459A - Water-blocking and oil-blocking fully degradable plastic film used for food packaging and preparation method thereof - Google Patents
Water-blocking and oil-blocking fully degradable plastic film used for food packaging and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a water-blocking and oil-blocking fully degradable plastic film used for food packaging. The water-blocking and oil-blocking fully degradable plastic film is characterized by being prepared from, by weight, 60-65 parts of corn starch, 7-9 parts of nano-montmorillonite, 0.6-0.7 part of peanut oil, 1.2-1.4 parts of tetrabutyl titanate, 12-14 parts of ramie sticks, 30-35 parts of poval, 9-12 parts of polycaprolactone, 12-15 parts of trioctyl citrate, 2.5-3 parts of sodium alginate, 3-5 parts of calcium carbonate, 2-3 parts of butyl lactate and 1-1.5 parts of sodium trimetaphosphate. Poval of the appropriate amount is added to be matched with the starch-based material, then the trioctyl citrate and the butyl lactate are added to be blended, the melting point of the poval can be reduced, which is more beneficial for industrial production, the strength and flexibility are improved, and the prepared film is solid and durable; the plastic film can be applied to food packaging and cleaning bags and the like and be fully degraded and therefore is worthy of large-area popularization.
Description
Technical field
The present invention relates to plastics film technical field, particularly a kind of oil resistance Based Full-degradable Plastics Film and preparation method thereof that blocks water for food product pack.
Background technology
Because the minimizing day by day of petroleum resources causes cost increase, tempo slows down Macromolecular materials industry traditional at present, and meanwhile, the problem of environmental pollution that macromolecular material produces highlights day by day, causes the very big attention of society.Natural macromolecular material is a kind of resource of reusable edible, it can be decomposed by the microorganisms the material into environmentally safe, as inorganic molecules material, water and carbonic acid gas etc., and natural macromolecular material has extremely strong plasticity-, can make it to become the desired functional materials with certain special property by multiple method of modifying, therefore, many countries have all dropped into a large amount of manpower and materials to the research and development of natural macromolecular material and have achieved many outstanding achievements.Utilize biodegradable starch material to prepare the focus that degradable packaging film has become countries in the world research.But starch is while raising plastics degradability, the decline of its physical and mechanical properties can be caused on the one hand, make its processing difficulties, also there is wetting ability on the other hand too strong, and the consistency between most of resins for universal use is very poor, cause the thin film mechanical performance made to decline to a great extent, block-water performance is poor, thus hinders the widespread use of starch plastic in industrialization promotion process.
Polyvinyl alcohol is a kind of broad-spectrum high molecular polymer; performance is between plastics and rubber; containing a large amount of polar group hydroxyls; toxicity is very low; molecular chain structure symmetry is regular; the water tolerance that there is unique strong adherence, epithelium snappiness, smoothness, oil-proofness, solvent resistance, protective colloid, gas barrier performance and have through special processing; also there is certain biological degradability simultaneously; having in wet environment under bacterium existent condition and can resolve into water and carbonic acid gas completely in 6 months, is Biodegradable Materials.
Ramie is the traditional fibre crop having distinct Chinese characteristics, and the long-term ramie planting area of China reaches about 200,000 hectares, and except ramie phloem extracts as except textile product, ramie boon is seldom utilized.The problems such as ramie boon utilization ratio is low, and process is difficult are governments at all levels and relevant department's question of common concern always, are also the problems that peasant is extremely concerned about.The by product that ramie core is processed as the large-scale production of ramie industry; important Biological resources; wherein rich cellulose, hemicellulose; its content of cellulose and the similar deciduous species of fibre shape; be the raw materials of desirable plant fiber tableware in theory, and it is rationally developed for raising ramie comprehensive value efficiently, promotes that ramie industry development is all significant.
Summary of the invention
The object of this invention is to provide a kind of oil resistance Based Full-degradable Plastics Film and preparation method thereof that blocks water for food product pack.The present invention adopts the raw material of safety non-toxic, through the technique of a series of modification, makes the product that the oil resistance that blocks water is respond well.
In order to realize object of the present invention, the present invention is by following scheme implementation:
For the oil resistance Based Full-degradable Plastics Film that blocks water of food product pack, be made up of the raw material of following weight part: W-Gum 60-65, nano imvite 7-9, peanut oil 0.6-0.7, tetrabutyl titanate 1.2-1.4, ramie boon 12-14, polyvinyl alcohol 30-35, polycaprolactone 9-12, trioctyl lemon acid 12-15, sodium alginate 2.5-3, calcium carbonate 3-5, n-Butyl lactate 2-3, metaphosphoric acid trisodium 1-1.5;
A kind of oil resistance Based Full-degradable Plastics Film that blocks water for food product pack of the present invention, be made up of following concrete steps:
(1) baking oven is put into after being mixed with nano imvite by W-Gum, take out after dry 120 minutes under the condition of 130 DEG C, (controlling bath temperature is 30 DEG C after being cooled to room temperature, mixed powder to be utilized sonic oscillation 30-40 minute, ultrasonic power is 100W), then mixed powder is transferred in stirring tank, add tetrabutyl titanate, control temperature is 75 DEG C, after stirring 15 minutes with the speed of 1500 revs/min, continue to add peanut oil, stir 15 minutes, finally take out and put into baking oven, the dry mixed powder namely obtaining surface hydrophobicity process for 60 minutes under the condition of 120 DEG C,
(2) 80-100 object powder is made after the drying of ramie boon through corase grind, fine grinding, then put into nano grinder after mixing with calcium carbonate and be ground into nanoscale powder, mix with sodium alginate again, kneader is put into after mixing, temperature control 130 DEG C, mediate 20 minutes, release cooling, obtain ramie boon and strengthen material;
(3) mixed powder of surface hydrophobicity modification step (1) obtained mixes with metaphosphoric acid trisodium, by colloidal mill dispersion 60-90 minute, then the ramie boon enhancing material that step (2) obtains is added, by in dual-screw pelletizer, melt extrude granulation under the condition of control temperature 170-180 DEG C, obtain the starch masterbatch that diameter is 6mm;
(4) after starch masterbatch, polyvinyl alcohol, trioctyl lemon acid and all the other remaining components that step (3) obtains being mixed at normal temperatures, join in single screw extrusion machine, control temperature carries out hot-melt extruded Blown Film under the processing temperature of 170-180 DEG C, last qualitative rolling, packs and get final product.
The invention has the beneficial effects as follows: the present invention adopts the raw material of safety non-toxic, traditional technology carries out modification, first hydrophobizing surface process is carried out to starch, nano imvite, sonic oscillation makes the particle diameter of starch decline, specific surface area increases, tetrabutyl titanate and hydrophobizing agent peanut oil effectively shield starch surface hydroxyl, form high hydrophobic layer; Simultaneously nano imvite has good gas barrier property and good far-infrared reflection, anti-aging, simultaneously heat-resisting, wear-resisting, intensity is high; Secondly, sodium alginate is utilized to carry out the strongthener as film after enhancing modified to ramie boon, the water vapor transmission rate (WVTR) of product can not only be reduced significantly, and improve the oil resistance of film, make the structure of film finer and close, thus improve thin film strength, and ramie boon raw material is easy to get, cost is low, turns waste into wealth, and can not produce pollution.
The present invention adds appropriate polyvinyl alcohol and coordinates starch-based material, finally add trioctyl lemon acid, n-Butyl lactate is blended, the fusing point of polyvinyl alcohol can be reduced, be more conducive to suitability for industrialized production, thus improve intensity, snappiness, make the film made durable; Product of the present invention can be applicable to food product pack, seasickness bag etc., can be degradable, is worth spread.
Specific embodiments
Below by specific examples, the present invention is described in detail.
For the oil resistance Based Full-degradable Plastics Film that blocks water of food product pack, be made up of the raw material of following weight part (kilogram): W-Gum 60, nano imvite 7, peanut oil 0.6, tetrabutyl titanate 1.2, ramie boon 12, polyvinyl alcohol 30, polycaprolactone 9, trioctyl lemon acid 12, sodium alginate 2.5, calcium carbonate 3, n-Butyl lactate 2, metaphosphoric acid trisodium 1;
A kind of oil resistance Based Full-degradable Plastics Film that blocks water for food product pack of the present invention, be made up of following concrete steps:
(1) baking oven is put into after being mixed with nano imvite by W-Gum, take out after dry 120 minutes under the condition of 130 DEG C, (controlling bath temperature is 30 DEG C after being cooled to room temperature, mixed powder to be utilized sonic oscillation 30 minutes, ultrasonic power is 100W), then mixed powder is transferred in stirring tank, add tetrabutyl titanate, control temperature is 75 DEG C, after stirring 15 minutes with the speed of 1500 revs/min, continue to add peanut oil, stir 15 minutes, finally take out and put into baking oven, the dry mixed powder namely obtaining surface hydrophobicity process for 60 minutes under the condition of 120 DEG C,
(2) 80-100 object powder is made after the drying of ramie boon through corase grind, fine grinding, then put into nano grinder after mixing with calcium carbonate and be ground into nanoscale powder, mix with sodium alginate again, kneader is put into after mixing, temperature control 130 DEG C, mediate 20 minutes, release cooling, obtain ramie boon and strengthen material;
(3) mixed powder of surface hydrophobicity modification step (1) obtained mixes with metaphosphoric acid trisodium, 90 minutes are disperseed by colloidal mill, then the ramie boon enhancing material that step (2) obtains is added, by in dual-screw pelletizer, melt extrude granulation under the condition of control temperature 170-180 DEG C, obtain the starch masterbatch that diameter is 6mm;
(4) after starch masterbatch, polyvinyl alcohol, trioctyl lemon acid and all the other remaining components that step (3) obtains being mixed at normal temperatures, join in single screw extrusion machine, control temperature carries out hot-melt extruded Blown Film under the processing temperature of 170-180 DEG C, last qualitative rolling, packs and get final product.
Product of the present invention is carried out explanation test according to the standard of GB/T 20197-2006, and the soil through 4 months buries experiment, and biological degradation rate can reach 58.8%.Carry out Mechanics Performance Testing according to GB/T 1040.3-2006, transverse tensile strength is 24.7MPa, and elongation at break is 670.26%; Longitudinal tensile strength is 22.9 MPa, and elongation at break is 448.23%, conformance with standard.
Claims (2)
1. the oil resistance Based Full-degradable Plastics Film that blocks water for food product pack, it is characterized in that, be made up of the raw material of following weight part: W-Gum 60-65, nano imvite 7-9, peanut oil 0.6-0.7, tetrabutyl titanate 1.2-1.4, ramie boon 12-14, polyvinyl alcohol 30-35, polycaprolactone 9-12, trioctyl lemon acid 12-15, sodium alginate 2.5-3, calcium carbonate 3-5, n-Butyl lactate 2-3, metaphosphoric acid trisodium 1-1.5.
2. a kind of oil resistance Based Full-degradable Plastics Film that blocks water for food product pack according to claim 1, is characterized in that, be made up of following concrete steps:
(1) baking oven is put into after being mixed with nano imvite by W-Gum, take out after dry 120 minutes under the condition of 130 DEG C, (controlling bath temperature is 30 DEG C after being cooled to room temperature, mixed powder to be utilized sonic oscillation 30-40 minute, ultrasonic power is 100W), then mixed powder is transferred in stirring tank, add tetrabutyl titanate, control temperature is 75 DEG C, after stirring 15 minutes with the speed of 1500 revs/min, continue to add peanut oil, stir 15 minutes, finally take out and put into baking oven, the dry mixed powder namely obtaining surface hydrophobicity process for 60 minutes under the condition of 120 DEG C,
(2) 80-100 object powder is made after the drying of ramie boon through corase grind, fine grinding, then put into nano grinder after mixing with calcium carbonate and be ground into nanoscale powder, mix with sodium alginate again, kneader is put into after mixing, temperature control 130 DEG C, mediate 20 minutes, release cooling, obtain ramie boon and strengthen material;
(3) mixed powder of surface hydrophobicity modification step (1) obtained mixes with metaphosphoric acid trisodium, by colloidal mill dispersion 60-90 minute, then the ramie boon enhancing material that step (2) obtains is added, by in dual-screw pelletizer, melt extrude granulation under the condition of control temperature 170-180 DEG C, obtain the starch masterbatch that diameter is 6mm;
(4) after starch masterbatch, polyvinyl alcohol, trioctyl lemon acid and all the other remaining components that step (3) obtains being mixed at normal temperatures, join in single screw extrusion machine, control temperature carries out hot-melt extruded Blown Film under the processing temperature of 170-180 DEG C, last qualitative rolling, packs and get final product.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105646991A (en) * | 2016-04-12 | 2016-06-08 | 苏州甫众塑胶有限公司 | High-rheological-property plastic material and preparation method thereof |
| CN106543610A (en) * | 2016-11-24 | 2017-03-29 | 安徽省天乐塑业有限公司 | A kind of polyvinyl alcohol package film and preparation method thereof |
| CN109535491A (en) * | 2018-11-29 | 2019-03-29 | 广东石油化工学院 | A kind of preparation method of two-dimensional nano piece modified starch base biological degradation activity packaging material |
| CN113698675A (en) * | 2021-07-09 | 2021-11-26 | 苏州宏昌包装材料有限公司 | Environment-friendly recyclable flexible packaging material and preparation process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1640928A (en) * | 2004-01-02 | 2005-07-20 | 王光明 | Fully-degradation environment-protection film material |
| CN102372858A (en) * | 2010-08-18 | 2012-03-14 | 陈天云 | Preparation method for starch-based biodegradable plastic |
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- 2015-05-27 CN CN201510273870.0A patent/CN105001459A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1640928A (en) * | 2004-01-02 | 2005-07-20 | 王光明 | Fully-degradation environment-protection film material |
| CN102372858A (en) * | 2010-08-18 | 2012-03-14 | 陈天云 | Preparation method for starch-based biodegradable plastic |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105646991A (en) * | 2016-04-12 | 2016-06-08 | 苏州甫众塑胶有限公司 | High-rheological-property plastic material and preparation method thereof |
| CN106543610A (en) * | 2016-11-24 | 2017-03-29 | 安徽省天乐塑业有限公司 | A kind of polyvinyl alcohol package film and preparation method thereof |
| CN109535491A (en) * | 2018-11-29 | 2019-03-29 | 广东石油化工学院 | A kind of preparation method of two-dimensional nano piece modified starch base biological degradation activity packaging material |
| CN113698675A (en) * | 2021-07-09 | 2021-11-26 | 苏州宏昌包装材料有限公司 | Environment-friendly recyclable flexible packaging material and preparation process thereof |
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Application publication date: 20151028 |