CN1173515A - Biological degradable plastic products and its prodn. method - Google Patents
Biological degradable plastic products and its prodn. method Download PDFInfo
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- CN1173515A CN1173515A CN 96110904 CN96110904A CN1173515A CN 1173515 A CN1173515 A CN 1173515A CN 96110904 CN96110904 CN 96110904 CN 96110904 A CN96110904 A CN 96110904A CN 1173515 A CN1173515 A CN 1173515A
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- plastics
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- high hydrophobicity
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- 238000000034 method Methods 0.000 title claims description 7
- 229920006238 degradable plastic Polymers 0.000 title 1
- 229920002472 Starch Polymers 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000008107 starch Substances 0.000 claims abstract description 13
- 235000019698 starch Nutrition 0.000 claims abstract description 13
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 5
- 239000000194 fatty acid Substances 0.000 claims abstract description 5
- 229930195729 fatty acid Natural products 0.000 claims abstract description 5
- 230000003647 oxidation Effects 0.000 claims abstract description 5
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 5
- 238000003490 calendering Methods 0.000 claims abstract 2
- 229920003023 plastic Polymers 0.000 claims description 13
- 239000004033 plastic Substances 0.000 claims description 13
- -1 fatty acid ester Chemical class 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 9
- 239000002689 soil Substances 0.000 claims description 9
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000002861 polymer material Substances 0.000 claims description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 claims description 5
- 238000005984 hydrogenation reaction Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- XCRBXWCUXJNEFX-UHFFFAOYSA-N peroxybenzoic acid Chemical compound OOC(=O)C1=CC=CC=C1 XCRBXWCUXJNEFX-UHFFFAOYSA-N 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- LDVVTQMJQSCDMK-UHFFFAOYSA-N 1,3-dihydroxypropan-2-yl formate Chemical compound OCC(CO)OC=O LDVVTQMJQSCDMK-UHFFFAOYSA-N 0.000 claims description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 125000004494 ethyl ester group Chemical group 0.000 claims description 2
- 238000005469 granulation Methods 0.000 claims description 2
- 230000003179 granulation Effects 0.000 claims description 2
- 229920002521 macromolecule Polymers 0.000 claims description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 2
- 125000005609 naphthenate group Chemical group 0.000 claims description 2
- 229940049964 oleate Drugs 0.000 claims description 2
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 235000003441 saturated fatty acids Nutrition 0.000 claims description 2
- 150000004671 saturated fatty acids Chemical class 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- UFTFJSFQGQCHQW-UHFFFAOYSA-N triformin Chemical compound O=COCC(OC=O)COC=O UFTFJSFQGQCHQW-UHFFFAOYSA-N 0.000 claims description 2
- 150000004670 unsaturated fatty acids Chemical class 0.000 claims description 2
- 235000021122 unsaturated fatty acids Nutrition 0.000 claims description 2
- 238000009736 wetting Methods 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims 2
- IIZPXYDJLKNOIY-JXPKJXOSSA-N 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCC\C=C/C\C=C/C\C=C/C\C=C/CCCCC IIZPXYDJLKNOIY-JXPKJXOSSA-N 0.000 claims 1
- 229920003232 aliphatic polyester Polymers 0.000 claims 1
- 238000007664 blowing Methods 0.000 claims 1
- 239000003054 catalyst Substances 0.000 claims 1
- YQHLDYVWEZKEOX-UHFFFAOYSA-N cumene hydroperoxide Chemical compound OOC(C)(C)C1=CC=CC=C1 YQHLDYVWEZKEOX-UHFFFAOYSA-N 0.000 claims 1
- 229940067606 lecithin Drugs 0.000 claims 1
- 235000010445 lecithin Nutrition 0.000 claims 1
- 239000000787 lecithin Substances 0.000 claims 1
- 125000004492 methyl ester group Chemical group 0.000 claims 1
- 244000005700 microbiome Species 0.000 claims 1
- 150000002978 peroxides Chemical class 0.000 claims 1
- 238000007666 vacuum forming Methods 0.000 claims 1
- 229920000704 biodegradable plastic Polymers 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 150000002148 esters Chemical class 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 abstract description 2
- 238000000071 blow moulding Methods 0.000 abstract 1
- 150000004665 fatty acids Chemical class 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 239000003607 modifier Substances 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 5
- 229920001684 low density polyethylene Polymers 0.000 description 5
- 239000004702 low-density polyethylene Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 240000007594 Oryza sativa Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 235000021355 Stearic acid Nutrition 0.000 description 3
- 229910021538 borax Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 3
- 239000012188 paraffin wax Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000011236 particulate material Substances 0.000 description 3
- 229920001592 potato starch Polymers 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 239000004328 sodium tetraborate Substances 0.000 description 3
- 235000010339 sodium tetraborate Nutrition 0.000 description 3
- 239000008117 stearic acid Substances 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- HPEUJPJOZXNMSJ-UHFFFAOYSA-N Methyl stearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC HPEUJPJOZXNMSJ-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- RWGFKTVRMDUZSP-UHFFFAOYSA-N cumene Chemical compound CC(C)C1=CC=CC=C1 RWGFKTVRMDUZSP-UHFFFAOYSA-N 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 235000012054 meals Nutrition 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 210000000582 semen Anatomy 0.000 description 2
- 229940100445 wheat starch Drugs 0.000 description 2
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229920002101 Chitin Polymers 0.000 description 1
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- DCXXMTOCNZCJGO-UHFFFAOYSA-N Glycerol trioctadecanoate Natural products CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 244000017020 Ipomoea batatas Species 0.000 description 1
- 235000002678 Ipomoea batatas Nutrition 0.000 description 1
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical group CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- CAMHHLOGFDZBBG-UHFFFAOYSA-N epoxidized methyl oleate Natural products CCCCCCCCC1OC1CCCCCCCC(=O)OC CAMHHLOGFDZBBG-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 235000021190 leftovers Nutrition 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- SGGOJYZMTYGPCH-UHFFFAOYSA-L manganese(2+);naphthalene-2-carboxylate Chemical compound [Mn+2].C1=CC=CC2=CC(C(=O)[O-])=CC=C21.C1=CC=CC2=CC(C(=O)[O-])=CC=C21 SGGOJYZMTYGPCH-UHFFFAOYSA-L 0.000 description 1
- SZINCDDYCOIOJQ-UHFFFAOYSA-L manganese(2+);octadecanoate Chemical compound [Mn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O SZINCDDYCOIOJQ-UHFFFAOYSA-L 0.000 description 1
- 150000004702 methyl esters Chemical group 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- GEMHFKXPOCTAIP-UHFFFAOYSA-N n,n-dimethyl-n'-phenylcarbamimidoyl chloride Chemical compound CN(C)C(Cl)=NC1=CC=CC=C1 GEMHFKXPOCTAIP-UHFFFAOYSA-N 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 238000001782 photodegradation Methods 0.000 description 1
- 229940116317 potato starch Drugs 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000002444 silanisation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A biodegradable plastic product is made up from high-molecular, high-hydrophobicity synthetic starch, ester of fatty acid, modifier and oxidation promoter through mixing them with auxiliary materials, melting, extrusion granulating, blow moulding, calendering and vacuum shaping, and features no environmental pollution of its used product.
Description
The present invention relates to a kind of plastics and manufacture method thereof of many degradation functions.
Existing plastics because economical and practical, be easy to processing, use very extensive.But traditional synthetic prestige material is owing to the character of itself is difficult to be degraded by biological.It is rotten promptly can not go mouldy.Therefore, the pollution problem of plastic garbage is serious day by day, has caused global concern.
Add natural macromolecular material a certain proportion of, that can degrade for biology in the existing synthesized polymer material that can not degrade for biology, as starch, Mierocrystalline cellulose, protein, chitin etc., the product of gained just can be degraded by biology.But this class natural macromolecular material all is a highly-hydrophilic, and synthesized polymer material commonly used all is highly hydrophobic.Consistency extreme difference between the two, physical strength descends greatly after the blend.Once adopted many methods in order to increase consistency various countries scientist: for example make the starch silanization or make it and handle with isocyanic ester; Perhaps graft copolymerization one deck acrylate or vinyl acetate on starch, but that these methods have is quite expensive, and the poor effect that has it seems that the starch hydrophobicity after the modification is still not enough.
We handle starch or the former powder of grain that contains a large amount of starch and obtain high hydrophobicity starchiness material through hydrophobizations.Its hydrophobicity is greatly improved, and is better with the synthetic macromolecule consistency.For photodegradation and the chemical catalysis degradation property that improves it, we have also added fatty acid ester, properties-correcting agent and hydrogenation promotor and some other additives.Its main component is (weight ratio):
Synthesized polymer material 40-88%
High hydrophobicity starchiness material 10-40%
Fatty acid ester 0.5-5%
Properties-correcting agent 0-5
Hydrogenation promotor 0-0.5%
Our used synthesized polymer material has polyethylene (comprising high-density and new LDPE (film grade)), polypropylene, polystyrene and polyvinyl chloride.Our used high hydrophobicity starchiness material is with W-Gum, potato starch, sweet potato starch, wheat starch and Starch rice, and main component is that the former powder of grain of starch such as Semen Maydis powder, rice meal, wheat-flour are handled the good product of hydrophobicity that gets through streamlined.
Our used fatty acid ester is methyl esters, ethyl ester, monoglyceride, triglyceride level, various crude vegetal and hydrogenation products thereof, the Yelkin TTS of the saturated or unsaturated fatty acids of C12-C22 and two or more mixture in them.
Our used properties-correcting agent is the organic peroxy compound.As benzoyl hydroperoxide, the adjacent dioctyl phthalate of two peroxide, dibenzoyl peroxide and hydrogen phosphide cumene etc.
Our used oxidation promotor is stearate, oleate or the naphthenate of manganese, iron, zinc, cobalt.Except above-mentioned major ingredient, also have other auxiliary agents such as lubricant, releasing agent and boron-containing compound commonly used in the composition sometimes.
Also can add filler again in above-mentioned composition as required, increase and hope agent and tinting material, the amount of these compositions does not count in the above-mentioned proportioning.
Product of the present invention can be colourless or near colourless translucent, also can add filler as required and tinting material changes its color and transparency.It can be soft and the film of favorable elasticity is arranged along with the change of composition, also can make section bars such as vessel with solid shape or pipe, rod, plate.
Product of the present invention is dry and do not have and can use repeatedly under the sunlight point-blank condition and intensity is constant substantially.Contact with damp soil in case abandon will go mouldy earlier, broken then, decompose fully finally and disappear, and do not generate any objectionable constituent.If do not contact damp soil but under daylight, tan by the sun yet and can degrade at leisure.Therefore, on the ground or underground it can not pollute.
It is nontoxic that product of the present invention also has an advantage, so its goods can be used for food product pack.
Below in conjunction with embodiment technology of the present invention is further described, but of the present inventionly is not limited only to the following example and should be as the criterion with claims.Example 1:
11 kilograms of poly-new LDPE (film grade)s, 11 kilograms of high hydrophobicity W-Gums, Oleum Gossypii semen 500 grams, Yelkin TTS 100 grams, Zinic stearas 100 grams, 1 kilogram of paraffin wax, glycerine 400 grams, stearic acid 100 grams, borax 10 grams mix.Earlier with homogenizer stirring at normal temperature 15 minutes.Change this compound in twin screw extruder granulation: screw rod long (L) is (D) ratio directly: i.e. L/D=25/1～30/1: screw speed: 200～250rpm: 130～180 ℃ of temperature: pressure 30-70kg/cm
2: extrude under these conditions, fervent, the air-cooled pellet that promptly gets 2.5 millimeters sizes, be masterbatch.
Get this masterbatch and add 2 kilograms of new LDPE (film grade)s for 1 kilogram.Be injection molded into cup with the twin screw injection moulding machine.Die head temperature is 130 ℃.This hopes the material cup contain high hydrophobicity starch 15.2%.This glass is embedded in the moist soil behind the fortnight, and the major part on its surface has been grown mildew.Example 2:
Get 2 kilograms of the masterbatch of example 1, add 1 kilogram of new LDPE (film grade).Be injection molded into cup with the twin screw injection moulding machine.130 ℃ of die head temperatures.This cup contains high hydrophobic W-Gum 30.3%.Be embedded in the damp soil after two weeks, almost all surfaces covers with mildew.Example 3:
Get 6 kilograms of polypropylene, 1.5 kilograms of high hydrophobicity potato starches, winterized stearin 200 grams, manganese stearate 10 grams, paraffin wax 200 grams, stearic acid 50 grams, 1.5 kilograms of borax 30 grams and talcum powder, put into homogenizer height under 130 ℃ of conditions and stirred 20-30 minutes, cold slightly by aforementioned condition, make particulate material-masterbatch of 2.5 millimeters with twin screw extruder.Make lunch box with this particle with single screw injection molding machine.This product contains high hydrophobicity starch material 15.8%, has stronger hardness.Be embedded in the damp soil behind the fortnight, the major part on surface has been grown mould class.Example 4:
Get 2 kilograms of polystyrene, high hydrophobicity rice meal 800 grams, refining soya-bean oil 100 grams, Yelkin TTS 20 grams, peroxybenzoic acid 50 grams, and iron naphthenate 5 grams stirred 30 minutes in homogenizer, when temperature reaches 130 ℃, coldly slightly make about 2.5 millimeters particulate material-masterbatch with twin screw extruder by preceding method.
Make plate with this particle with injection moulding machine.This dish is embedded in the wetting soil fortnight rear surface major part has grown mildew.Broken after eight months, fragment becomes black.It is also broken after eight months to be placed on outdoor plate in addition, and the fragment grey is broken at a touch, no longer includes physical strength.Example 5:
Get 8.6 kilograms of high density polyethylene(HDPE)s, 1.2 kilograms of high hydrophobicity wheat starches, rapeseed oil 50 grams, stearic acid 10 grams, manganese naphthenate 10 grams stirred 30 minutes in 130-140 ℃ in homogenizer.Selling cold changes in the forcing machine in 170 ℃ of extruding pelletizations.Air-cooled earnestly about 2 millimeters particulate material.Is 25 microns film with this particulate material at the common thickness that is blow molded into.Its longitudinal tensile strength is 15MPa after tested, and the longitudinal fracture elongation is 130%; Transverse tensile strength is 11MPa, and the transverse breakage elongation is 520%.Be embedded in the damp soil behind the fortnight, the mildew area accounts for 48% of the total area.After six months, only can find some small leftovers.Example 6:
Get 8.13 kilograms of new LDPE (film grade)s, 1.6 kilograms of high hydrophobicity W-Gums, methyl stearate 100 grams, Yelkin TTS 20 grams, cobalt naphthenate 20 grams, paraffin wax 80 grams, stearic acid 20 grams, borax 10 grams.Temperature reaches 130 ℃ in homogenizer, and is cold slightly, changes in the forcing machine, makes about 2 millimeter-sized particles material-masterbatch by above-mentioned extrusion condition.On common blown film, be blow molded into thick 25 microns film with this particulate material.Recording its longitudinal tensile strength is 12MPa, and the longitudinal fracture elongation is 110%, and transverse tensile strength is 10MPa, and the transverse breakage elongation is 370%.Be embedded in the damp soil behind the fortnight, the mildew area accounts for completely dissolve behind 68%, six month of total surface area.
Advantage of the present invention is:
1. the product that makes of the present invention can degrade by biological, and chemistry is degraded, also can be under high light branch slowly Separate. Solved the problem of environmental pollution of existing plastics.
2. function admirable, ability boiling water, anti-low temperature, again nontoxic, use very extensive.
3. the starting material source is abundant, and cheap, manufacturing process is simple, and very high economic benefit and social benefit are arranged.
Claims (8)
1, a kind of plastics of being degraded by microorganism, UV-light, chemical catalyst is characterized in that its main component is: synthesized polymer material, high hydrophobicity starchiness material, fatty acid ester, properties-correcting agent and oxidation promotor.Their weight percent is:
Synthesized polymer material 40-88%
High hydrophobicity starchiness material 10-40%
Aliphatic polyester 0.5-5%
Properties-correcting agent 0.0-5%
Oxidation promotor 0.0-0.5%
2, a kind of plastics as claimed in claim 1 is characterized in that being degraded by Institute of Micro-biology in wetting soil: go mouldy earlier, broken then, final completely dissolve is in environment.Also can shine down simultaneously and slowly decompose at high light.So environmentally safe.
3, a kind of plastics as claimed in claim 1 is characterized in that used synthesized polymer material is polyethylene, polypropylene, polystyrene or polyvinyl chloride etc.
4, a kind of plastics as claimed in claim 1 is characterized in that used high hydrophobicity starchiness material, are the former powder of grain of main component for the starch of various different sourcess or with starch, the product that gets through the hydrophobization processing.
5, a kind of plastics as claimed in claim 1, it is characterized in that used aliphatic ester is methyl esters, ethyl ester, monoglyceride, the triglyceride level of the saturated or unsaturated fatty acids of C12-C22, crude vegetal or its hydrogenation products, lecithin and two or more mixture in them.
6, a kind of plastics as claimed in claim 1 is characterized in that its properties-correcting agent is the organic peroxy compound, as benzoyl hydroperoxide, two peroxide phthalic acid, dibenzoyl peroxide, isopropyl benzene hydroperoxide and composition thereof.
7, a kind of plastics as claimed in claim 1 is characterized in that oxidation promotor wherein is stearate, oleate or the naphthenate of iron, manganese, zinc, cobalt.
8, a kind of plastics as claimed in claim 1 is characterized in that earlier constitutive material being mixed in proportion, and make masterbatch with twin screw extruder, granulation then.Again with masterbatch with after a certain proportion of synthetic macromolecule mixes, with blowing, injection moulding, extrude, method such as calendering, press mold, vacuum forming is processed into the plastics of desired shape, or has the film product of various purposes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96110904 CN1173515A (en) | 1996-08-13 | 1996-08-13 | Biological degradable plastic products and its prodn. method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96110904 CN1173515A (en) | 1996-08-13 | 1996-08-13 | Biological degradable plastic products and its prodn. method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1173515A true CN1173515A (en) | 1998-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96110904 Pending CN1173515A (en) | 1996-08-13 | 1996-08-13 | Biological degradable plastic products and its prodn. method |
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| Country | Link |
|---|---|
| CN (1) | CN1173515A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1129638C (en) * | 1999-03-19 | 2003-12-03 | 北京清大亚太科技研究中心 | Degradeable resin composition and its preparation and application |
| CN1308394C (en) * | 2002-04-22 | 2007-04-04 | 诺瓦蒙特股份公司 | Biodegradable polyesters obtained by reactive extrusion |
-
1996
- 1996-08-13 CN CN 96110904 patent/CN1173515A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1129638C (en) * | 1999-03-19 | 2003-12-03 | 北京清大亚太科技研究中心 | Degradeable resin composition and its preparation and application |
| CN1308394C (en) * | 2002-04-22 | 2007-04-04 | 诺瓦蒙特股份公司 | Biodegradable polyesters obtained by reactive extrusion |
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