CN101311209B - High strength starch-based degrading and environment-protecting material and preparation method - Google Patents
High strength starch-based degrading and environment-protecting material and preparation method Download PDFInfo
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- CN101311209B CN101311209B CN2007100722351A CN200710072235A CN101311209B CN 101311209 B CN101311209 B CN 101311209B CN 2007100722351 A CN2007100722351 A CN 2007100722351A CN 200710072235 A CN200710072235 A CN 200710072235A CN 101311209 B CN101311209 B CN 101311209B
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Abstract
The invention provides a high-intensity starch-based degradation environmental protection material and a manufacturing method thereof, which relates to a rapid degradation raw material used for manufacturing disposable tableware and disposable wrappage and the manufacturing method thereof. The present disposable foaming plastic tableware has the disadvantages of hard heat insulation, complicated process line, high production cost, undesirable production quality and white pollution. The components of the product include macromolecular natural starch, polyvinyl alcohol, plant sugar, polyvinyl alcohol, a degradation control agent, a multipolymer of polycaprolactone and poly-beta-hydroxybutyrate, and chitin chitosan polymer sugar ester; wherein, the starch is 51-80 weight portions, the polyvinyl alcohol is 12-20 weight portions, the plant sugar is 2-10.5 weight portions, plasticizer is 2.5-8 weight portions, the degradation control agent is 0.2-1 weight portions, the multipolymer of polycaprolactone and poly-beta-hydroxybutyrate is 5-9 weight portions and the chitin chitosan polymer sugar ester is 0.2-0.5 weight portions. The high-intensity starch-based degradation environmental protection material of the invention is used for manufacturing the disposable tableware and the disposable warppage.
Description
Technical field:
The present invention relates to a kind of starting material capable of being fast degraded and manufacture method thereof that is used to make disposable tableware and disposable packaging.
Background technology:
Present disposable foaming plastic tableware is used commonplace, though bring convenience for people's life, but also caused serious white pollution simultaneously to environment, this foaming plastic tableware in soil will through decades in addition on a century can degrade, can also produce this carcinogens of Dioxins after its burning, foaming plastic tableware can produce toxin under 60 ℃ temperature, as seen its environment and health to people's life has great infringement.Though some starch-based degrading materials of Chu Xianing had solved the white pollution problems that expanded plastic causes in recent years, but these degradable materials are owing to bad mechanical strength, poor plasticity, to overlap kneading devices with two aborning, be difficult for insulation, technology complex circuit, production cost height in the production process, quality product does not reach requirement, thereby can not use widely
Summary of the invention:
The objective of the invention is to adopt polymer starch and derivative is the high strength degradation environment protection material and the manufacture method that a kind of processing line is short out, cost is low of base-material.
Above-mentioned purpose realizes by following technical scheme:
The high strength starch-based degrading environment-friendly materials, its composition comprises: the polymer native starch, polyvinyl alcohol, plant sugar, softening agent, the degraded control agent, polycaprolactone and polyhydroxy butyrate ester copolymer, a few butyl ester chitosans, the parts by weight of described starch are 51～80, the parts by weight of described polyvinyl alcohol are 12～20, the parts by weight of described plant sugar are 2～10.5, the parts by weight of described softening agent are 2.5～8, the parts by weight of described degraded control agent are 0.2～1, the parts by weight of described polycaprolactone and polyhydroxy butyrate ester copolymer are 5～9, and the parts by weight of described a few butyl ester chitosans are 0.2～0.5.
Described high strength starch-based degrading environment-friendly materials, the parts by weight of described starch are 61～76, the parts by weight of described polyvinyl alcohol are 14～18, the parts by weight of described plant sugar are 3～8, the parts by weight of described softening agent are 2～7, the parts by weight of described degraded control agent are 0.2～0.8, and the parts by weight of described polycaprolactone and polyhydroxy butyrate ester copolymer are 4～8, and the parts by weight of described a few butyl ester chitosans are 0.2～0.4.
Described high strength starch-based degrading environment-friendly materials, described softening agent are salad oil, and described plant sugar is Dian Fentang or maltose.
The manufacture method of described high strength starch-based degrading environment-friendly materials, according to the parts by weight starch in the above claim, polyvinyl alcohol, plant sugar, softening agent, the degraded control agent, polycaprolactone and polyhydroxy butyrate ester copolymer, a few butyl ester chitosans, raw material is carried out polyreaction blend modification by copolymerization, then raw material is put into the cord wood parallel double-screw extruder carry out three grades mixing, the length of screw rod is 44～56: 1 with the ratio of diameter in the forcing machine, on screw rod, be distributed with three mixing sections, the raw material that will come out from the cord wood parallel double-screw extruder is made sheet material through supercharging device under 120～190 ℃.
The manufacture method of described high strength starch-based degrading environment-friendly materials, described raw material carries out in the polyreaction blend modification by copolymerization process, the equipment that adopts is that oil heating height mixes and cold mixed all-in-one, temperature adds starch and polyvinyl alcohol in the time of 70～90 ℃, and high-speed mixing, add polycaprolactone and polyhydroxy butyrate ester copolymer and high-speed mixing again to 80～110 ℃, continue to be heated to 100～120 ℃ of time-divisions 2～5 times with plant sugar, softening agent, degraded control agent and a few butyl ester chitosan add, carry out polyreaction blend modification by copolymerization, temperature is 120～150 ℃, time is 35～40 minutes, is discharged at last in cold the mixing to mix, and is cooled to 70～90 ℃.
The manufacture method of described high strength starch-based degrading environment-friendly materials, described supercharging device are Melt Pump.Technical scheme has following beneficial effect:
1. by experiment and measuring and calculating, this product has carried out bigger adjustment to the auxiliary material content in the product, makes physical strength improve a lot, on average improve more than 30% than existing product, and plasticity-is strong, and can control degradation speed and degradation time.
2. adopt two kneading devices just can finish in the traditional method, only need in the production method of the present invention with a cover kneading device, the cover kneading device of having saved compared with the past, and be beneficial to the insulation in the production process, simplify and shortened the technology circuit, reduce production cost, improved quality product.
3. mechanism of degradation of the present invention is the effect by microorganism and various bacterium and enzyme, material breakdown is become carbonic acid gas and water, reduce molecular weight, make molecular rupture become low molecular weight fragments and porous to destroy structure, increase the surface-area of material, various decomposition reactions take place under the effect of bacterium and enzyme, thereby reach by the degree of multiple microbial metabolism, participate in and photosynthetic comprehensive action by multiple microorganism, finally decompose fully.
4. material of the present invention is that cost is moderate, the novel Wholly-degradable material of controllable degradation speed and degradation time, can improve the soil after the degraded, carries out benign circulation.
5. have nontoxic, harmless, free from extraneous odour, water-fast, oil resistant, heat-resisting (+150 ℃), cold-resistant (20 ℃), not softening, indeformable, resistance to compression with the disposable tableware of manufacturing of the present invention, and can in steamer, microwave oven, heat use, absolutely adapt to the physical environment degraded, and the may command degradation cycle, improve its adaptability.
6. goods quality exquisiteness, the color and luster produced of material of the present invention is pleasant, and organic fertilizer is made in the discarded back of its goods recyclable reprocessing on the one hand, or makes the industrial packaging goods, perhaps makes the mushroom growth base; Can be biodegradable into fertilizer on the other hand, circulate benignly, make it to go back to nature.
7. the cost that material of the present invention is made cutlery box is 40% of a pulp goods cutlery box cost, is 50% of plant fiber products cost.
8. the present invention adds combinations of substances such as Mierocrystalline cellulose, polyvalent alcohol with the gentle fat of the biology of Production by Microorganism Fermentation and becomes the biological degradation additive, for reducing the cost of biological polyester, adopt up-to-date zymotechnique, utilize cheap charcoal source to produce, the strain excellent seed selection, broken wall, the collection fermenting process that shorten fermentation period are determined the best proportioning of each moiety of additive, produce multiduty additive.
9. the present invention adopts fermentation-polymerization technique, degrades in 45 days more than the 91%-97%; Add nanometer and handle, goods are at 60 ℃ of environment constant temperature 30min heavy burden 3kg, height change≤5%, 15 non-crackings of doubling.The specific embodiment of the present invention:
Embodiment 1:
A kind of high strength starch-based degrading environment-friendly materials, its composition comprises: starch, polyvinyl alcohol, the plant pool, softening agent, the degraded control agent, polycaprolactone and polyhydroxy butyrate ester copolymer, a few butyl ester chitosans, the parts by weight of described starch are 51～80, the parts by weight of described polyvinyl alcohol are 12～20, the parts by weight of described plant sugar are 2～10.5, the parts by weight of described softening agent are 2.5～8, the parts by weight of described degraded control agent are 0.2～1, the parts by weight of described polycaprolactone and polyhydroxy butyrate ester copolymer are 5～9, and the parts by weight of described a few butyl ester chitosans are 0.2～0.5.
Embodiment 2:
A kind of high strength starch-based degrading environment-friendly materials, its preparation technology is: the natural polymer starch of getting 51kg, the polyvinyl alcohol of 12kg, the plant sugar of 2kg, 2.5kg softening agent, 0.2kg the degraded control agent, the polycaprolactone of 5kg and polyhydroxy butyrate ester copolymer, 0.2kg a few butyl ester chitosans, raw material is carried out polyreaction blend modification by copolymerization, the equipment that adopts is that oil heating height mixes and cold mixed all-in-one, temperature adds natural polymer starch and polyvinyl alcohol polyvinyl alcohol in the time of 70 ℃, and high-speed mixing, add polycaprolactone and polyhydroxy butyrate ester copolymer and high-speed mixing again to 80 ℃, continue to be heated to 100 ℃ of time-divisions 2 times with plant sugar (wood sugar, maltose or Dian Fentang), softening agent (salad oil), degraded control agent and a few butyl ester chitosan add, carry out polyreaction blend modification by copolymerization, temperature is 120 ℃, time is 35 minutes, be discharged at last in cold the mixing and mix, and be cooled to 70 ℃.Then raw material is put into the cord wood parallel double-screw extruder carry out three grades mixing, the length of screw rod is 44: 1 with the ratio of diameter in the forcing machine, is distributed with three mixing sections on screw rod.The raw material that will come out from the cord wood parallel double-screw extruder is a Melt Pump through supercharging device, makes sheet material under 120 ℃.
Embodiment 3:
A kind of high strength starch-based degrading environment-friendly materials, its preparation technology is: the natural polymer starch of getting 60kg, the polyvinyl alcohol of 18kg, the plant sugar of 8kg, the softening agent of 6kg, 0.8kg the degraded control agent, the polycaprolactone of 8kg and polyhydroxy butyrate ester copolymer, 0.4kg a few butyl ester chitosans, raw material is carried out polyreaction blend modification by copolymerization, the equipment that adopts is that oil heating height mixes and cold mixed all-in-one, temperature adds natural polymer starch and polyvinyl alcohol polyvinyl alcohol in the time of 80 ℃, and high-speed mixing, add polycaprolactone and polyhydroxy butyrate ester copolymer and high-speed mixing again to 100 ℃, continue to be heated to 110 ℃ of time-divisions 3 times with plant sugar (wood sugar, maltose or Dian Fentang), softening agent (salad oil), degraded control agent and a few butyl ester chitosan add, carry out polyreaction blend modification by copolymerization, temperature is 140 ℃, time is 38 minutes, be discharged at last in cold the mixing and mix, and be cooled to 80 ℃.Then raw material is put into the cord wood parallel double-screw extruder carry out three grades mixing, the length of screw rod is 48: 1 with the ratio of diameter in the forcing machine, is distributed with three mixing sections on screw rod.The raw material that will come out from the cord wood parallel double-screw extruder is a Melt Pump through supercharging device, makes sheet material under 170 ℃.
Embodiment 4:
A kind of high strength starch-based degrading environment-friendly materials, its preparation technology is: the natural polymer starch of getting 80kg, the polyvinyl alcohol of 20kg, 10.5kg plant sugar, the softening agent of 8kg, the degraded control agent of 1kg, the polycaprolactone of 9kg and polyhydroxy butyrate ester copolymer, 0.5kg a few butyl ester chitosans, raw material is carried out polyreaction blend modification by copolymerization, the equipment that adopts is that oil heating height mixes and cold mixed all-in-one, temperature adds natural polymer starch and polyvinyl alcohol polyvinyl alcohol in the time of 90 ℃, and high-speed mixing, add polycaprolactone and polyhydroxy butyrate ester copolymer and high-speed mixing again to 110 ℃, continue to be heated to 120 ℃ of time-divisions 5 times with plant sugar (wood sugar, maltose or Dian Fentang), softening agent (salad oil), degraded control agent and a few butyl ester chitosan add, carry out polyreaction blend modification by copolymerization, temperature is 150 ℃, time is 40 minutes, be discharged at last in cold the mixing and mix, and be cooled to 90 ℃.Then raw material is put into the cord wood parallel double-screw extruder carry out three grades mixing, the length of screw rod is 56: 1 with the ratio of diameter in the forcing machine, is distributed with three mixing sections on screw rod.The raw material that will come out from the cord wood parallel double-screw extruder is a Melt Pump through supercharging device, makes sheet material under 190 ℃.Above-mentioned material can be made various disposable food packing things, industrial packaging thing, pharmaceutical pack thing, daily necessities packing material by positive pressure forming machine, vacuum forming machine (comprising double, two-sided heating positive and negative pressure shaper), injection moulding machine.
Technical performance index that product of the present invention reaches and parameter:
(1) use properties requires:
Volume deviation ± 5%; Heatproof test (p5 ± 5 ℃) water does not have the distortion wrinkle and oozes;
Intensity index during (2) 60 ℃ of environment constant temperature 30min:
Tableware bears a heavy burden and tests (3kg) height change≤5%
15 non-crackings of tableware double-over test;
Fall down test does not once have rhegma;
(3) physical and chemical index:
Natural product is moisture＜and 7%; The degraded time limit (45 days);
More than the degraded 91%-97%.
Claims (1)
1. the preparation technology of high strength starch-based degrading environment-friendly materials: it is characterized in that: the natural polymer starch of getting 60kg, the polyvinyl alcohol of 18kg, the plant sugar of 8kg, the softening agent of 6kg, 0.8kg the degraded control agent, the polycaprolactone of 8kg and polyhydroxy butyrate ester copolymer, 0.4kg a few butyl ester chitosans, raw material is carried out polyreaction blend modification by copolymerization, the equipment that adopts is that oil heating height mixes and cold mixed all-in-one, temperature adds natural polymer starch and polyvinyl alcohol in the time of 80 ℃, and high-speed mixing, add polycaprolactone and polyhydroxy butyrate ester copolymer and high-speed mixing again to 100 ℃, continue to be heated to 110 ℃ of time-divisions 3 times with plant sugar, softening agent, degraded control agent and a few butyl ester chitosan add, carry out polyreaction blend modification by copolymerization, temperature is 140 ℃, time is 38 minutes, be discharged at last in cold the mixing and mix, and be cooled to 80 ℃, then raw material is put into the cord wood parallel double-screw extruder carry out three grades mixing, the length of screw rod is 48: 1 with the ratio of diameter in the forcing machine, on screw rod, be distributed with three mixing sections, the raw material that will come out from the cord wood parallel double-screw extruder is a Melt Pump through supercharging device, makes sheet material under 170 ℃.
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| CN2007100722351A CN101311209B (en) | 2007-05-22 | 2007-05-22 | High strength starch-based degrading and environment-protecting material and preparation method |
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| CN2007100722351A CN101311209B (en) | 2007-05-22 | 2007-05-22 | High strength starch-based degrading and environment-protecting material and preparation method |
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| CN101311209A CN101311209A (en) | 2008-11-26 |
| CN101311209B true CN101311209B (en) | 2011-04-06 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101948598B (en) * | 2010-02-02 | 2013-03-13 | 广东上九生物降解塑料有限公司 | Method for preparing biodegradable membrane |
| CN103992516A (en) * | 2014-04-30 | 2014-08-20 | 安徽省宁国市明浩包装材料有限公司 | Environmentally-friendly plastic product and making method thereof |
| CN103951852A (en) * | 2014-05-21 | 2014-07-30 | 季国良 | Manufacturing method of high-strength starch-base degradable environment-friendly material |
| CN103937035A (en) * | 2014-05-21 | 2014-07-23 | 季国良 | Starch-base degraded environmental protection material |
| CN104312115B (en) * | 2014-10-08 | 2016-01-06 | 淄博夸克医药技术有限公司 | A kind of environmental protection polycaprolactone plastic material |
| CN104592558A (en) * | 2015-02-04 | 2015-05-06 | 哈尔滨绿环生物降解制品开发有限公司 | Comprehensive resource utilization type photo-biodegradable environment-friendly material and preparation method thereof |
| CN105461970A (en) * | 2015-06-23 | 2016-04-06 | 湖南工业大学 | Biomass composite antibiotic foamed material |
| CN105875264A (en) * | 2016-04-15 | 2016-08-24 | 张锦凡 | Cotton seed bag |
| CN107353612A (en) * | 2017-07-13 | 2017-11-17 | 闫博 | A kind of preparation method of degradable combination film |
| CN107236269A (en) * | 2017-07-13 | 2017-10-10 | 闫博 | A kind of degradable combination film and preparation method thereof |
| CN107177178A (en) * | 2017-07-13 | 2017-09-19 | 闫博 | A kind of degradable combination film |
| CN108976484A (en) * | 2018-06-08 | 2018-12-11 | 合肥华冠包装科技有限公司 | A kind of high-intensitive decomposable type environmental friendly packaging box |
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