CN104910433A - High temperature-resistant full-degradable plastic film and preparation method thereof - Google Patents
High temperature-resistant full-degradable plastic film and preparation method thereof Download PDFInfo
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- CN104910433A CN104910433A CN201510273950.6A CN201510273950A CN104910433A CN 104910433 A CN104910433 A CN 104910433A CN 201510273950 A CN201510273950 A CN 201510273950A CN 104910433 A CN104910433 A CN 104910433A
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Abstract
The invention discloses a high temperature-resistant full-degradable plastic film. The high temperature-resistant full-degradable plastic film is prepared from following raw materials, by weight, 60 to 65 parts of corn starch, 7 to 9 parts of nano montmorillonite, 0.6 to 0.7 part of peanut oil, 1.2 to 1.4 parts of tetrabutyl titanate, 12 to 14 parts of ramie straw, 30 to 35 parts of polyvinyl alcohol, 12 to 15 parts of trioctyl citrate, 1 to 2 parts of 2,6-tributyl-4-methyl benzol, 2 to 4 parts of polyimide, 4 to 6 parts of nano cerium oxide, and 2 to 3 parts of liquid silicon. According to a preparation method, the prior art is modified, the obtained preparation method is convenient for operation, and is beneficial for realization of industrial large-scale production; the raw materials are easily available; the obtained high temperature-resistant full-degradable plastic film possesses high temperature resistance and water resistance, is suitable to be taken as industrial packaging materials, and food packaging materials, can be made into clean bags, and is solid and durable; degradation can be realized under natural conditions after discarding; and no pollution is caused.
Description
Technical field
The present invention relates to plastics film technical field, particularly a kind of high temperature resistant Based Full-degradable Plastics Film and preparation method thereof.
Background technology
The output of China's plastics film accounts for 20% of plastics ultimate production, is increase of production one of classification faster in plastics.Along with the fields such as China's packaging, agricultural not only increase the demand of plastics film, the demand estimating China plastics film every year by with more than 9% speed increment, its market outlook are very wide.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, resistance to elevated temperatures is poor, 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 the invention is to carry out modification for the non-refractory of Starch-Polyvinyl Alcohol base blend film, the poor shortcoming that blocks water, a kind of high temperature resistant Based Full-degradable Plastics Film and preparation method thereof be provided.
In order to realize object of the present invention, the present invention is by following scheme implementation:
A kind of high temperature resistant Based Full-degradable Plastics Film, 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, trioctyl lemon acid 12-15,2,6-tributyl-4-methylbenzene 1-2, polyimide 2-4, nano-cerium oxide 4-6, liquid silica gel 2-3;
A kind of high temperature resistant Based Full-degradable Plastics Film 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 and be ground into nanoscale powder, mix with liquid silica gel again, kneader is put into after mixing, temperature control 130 DEG C, mediate 15 minutes, release cooling, obtain ramie boon and strengthen material;
(3) mixed powder of surface hydrophobicity modification step (1) obtained and nano-cerium oxide, 2,6-tributyl-4-methylbenzene mixes, 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 is directed to poor, poor mechanical property, non-refractory the shortcoming that blocks water that existing Starch-Polyvinyl Alcohol base degradable plastic film exists, all modification has been carried out to composition proportion and technique.First carry out hydrophobizing surface process to starch, nano imvite, sonic oscillation makes the particle diameter of starch decline, and specific surface area increases, and 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; Next utilizes ramie boon as the strongthener of Based Full-degradable Plastics Film, and have good water-fast, oil resistance, intensity is high, improves thin film strength, can be dissolved, and cost is low, turns waste into wealth after use by environment, can not produce pollution; Finally coordinated with polyimide, liquid silica gel, trioctyl lemon acid etc. by polyvinyl alcohol, safety non-toxic, can reduce the fusing point of polyvinyl alcohol, is convenient to carry out blended with starch matrix, can improve high thermal resistance and mechanical property, the water tolerance of film simultaneously.
The present invention is by carrying out modification to traditional technology, and the technique convenient operation obtained, be beneficial to and realize industrialized production, and raw material is simple and easy to get; The film produced is high temperature resistant, water-fast, be suitable as industrial packaging, food product pack, produce seasickness bag, durable, can degrade under field conditions (factors) after discarded, can not pollution be produced.
Specific embodiments
Below by specific examples, the present invention is described in detail.
A kind of high temperature resistant Based Full-degradable Plastics Film, 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, trioctyl lemon acid 12,2,6-tributyl-4-methylbenzene 1, polyimide 2, nano-cerium oxide 4, liquid silica gel 2;
A kind of high temperature resistant Based Full-degradable Plastics Film 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 40 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 and be ground into nanoscale powder, mix with liquid silica gel again, kneader is put into after mixing, temperature control 130 DEG C, mediate 15 minutes, release cooling, obtain ramie boon and strengthen material;
(3) mixed powder of surface hydrophobicity modification step (1) obtained and nano-cerium oxide, 2,6-tributyl-4-methylbenzene mixes, 60 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 62.4%.Carry out Mechanics Performance Testing according to GB/T 1040.3-2006, transverse tensile strength is 26.1MPa, and elongation at break is 657.85%; Longitudinal tensile strength is 22.8 MPa, and elongation at break is 446.95%, conformance with standard.
Claims (2)
1. a high temperature resistant Based Full-degradable Plastics Film, 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, trioctyl lemon acid 12-15,2,6-tributyl-4-methylbenzene 1-2, polyimide 2-4, nano-cerium oxide 4-6, liquid silica gel 2-3.
2. a kind of high temperature resistant Based Full-degradable Plastics Film 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 and be ground into nanoscale powder, mix with liquid silica gel again, kneader is put into after mixing, temperature control 130 DEG C, mediate 15 minutes, release cooling, obtain ramie boon and strengthen material;
(3) mixed powder of surface hydrophobicity modification step (1) obtained and nano-cerium oxide, 2,6-tributyl-4-methylbenzene mixes, 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 (3)
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| CN106280498A (en) * | 2016-08-26 | 2017-01-04 | 桐城市钰锦塑料包装有限公司 | A kind of silkworm silk novolac epoxy resin is blended degradable food bag and preparation method thereof |
| CN108148410A (en) * | 2017-12-22 | 2018-06-12 | 桐城市桃花制刷有限公司 | A kind of biscuit plastic package material and preparation method thereof |
| CN109912889A (en) * | 2019-03-25 | 2019-06-21 | 成都新柯力化工科技有限公司 | A method of improving starch-based degradable plastics thermal stability |
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Application publication date: 20150916 |