CN112940355A - Natural plant fiber mixture N-PFM and preparation method thereof - Google Patents
Natural plant fiber mixture N-PFM and preparation method thereof Download PDFInfo
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- CN112940355A CN112940355A CN202110372098.3A CN202110372098A CN112940355A CN 112940355 A CN112940355 A CN 112940355A CN 202110372098 A CN202110372098 A CN 202110372098A CN 112940355 A CN112940355 A CN 112940355A
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- 239000000203 mixture Substances 0.000 title claims abstract description 68
- 239000000835 fiber Substances 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title claims description 16
- 241000196324 Embryophyta Species 0.000 claims abstract description 57
- 239000000463 material Substances 0.000 claims abstract description 44
- 238000002156 mixing Methods 0.000 claims abstract description 44
- 239000000843 powder Substances 0.000 claims abstract description 44
- 229920000881 Modified starch Polymers 0.000 claims abstract description 37
- 239000004368 Modified starch Substances 0.000 claims abstract description 37
- 235000019426 modified starch Nutrition 0.000 claims abstract description 37
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 20
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 20
- 241001330002 Bambuseae Species 0.000 claims abstract description 20
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 20
- 239000011425 bamboo Substances 0.000 claims abstract description 20
- 239000007822 coupling agent Substances 0.000 claims abstract description 19
- 229920006167 biodegradable resin Polymers 0.000 claims abstract description 16
- 102000004190 Enzymes Human genes 0.000 claims abstract description 13
- 108090000790 Enzymes Proteins 0.000 claims abstract description 13
- 238000004898 kneading Methods 0.000 claims abstract description 12
- 239000002023 wood Substances 0.000 claims abstract description 9
- 230000004048 modification Effects 0.000 claims abstract description 8
- 238000012986 modification Methods 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims description 48
- 239000000126 substance Substances 0.000 claims description 28
- 239000008187 granular material Substances 0.000 claims description 27
- 229920002472 Starch Polymers 0.000 claims description 23
- 235000019698 starch Nutrition 0.000 claims description 23
- 239000008107 starch Substances 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000002844 melting Methods 0.000 claims description 18
- 230000008018 melting Effects 0.000 claims description 18
- 239000003963 antioxidant agent Substances 0.000 claims description 15
- 230000003078 antioxidant effect Effects 0.000 claims description 15
- 239000002250 absorbent Substances 0.000 claims description 12
- 230000002745 absorbent Effects 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 11
- 239000012190 activator Substances 0.000 claims description 10
- 240000008042 Zea mays Species 0.000 claims description 9
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 9
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 9
- 235000005822 corn Nutrition 0.000 claims description 9
- 239000013543 active substance Substances 0.000 claims description 8
- -1 polybutylene succinate Polymers 0.000 claims description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 claims description 6
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims description 6
- ZQBAKBUEJOMQEX-UHFFFAOYSA-N phenyl salicylate Chemical compound OC1=CC=CC=C1C(=O)OC1=CC=CC=C1 ZQBAKBUEJOMQEX-UHFFFAOYSA-N 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 6
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 5
- 239000012965 benzophenone Substances 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 239000002916 wood waste Substances 0.000 claims description 4
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 3
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 3
- 239000005639 Lauric acid Substances 0.000 claims description 3
- 240000003183 Manihot esculenta Species 0.000 claims description 3
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 3
- 239000005642 Oleic acid Substances 0.000 claims description 3
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 3
- 244000061456 Solanum tuberosum Species 0.000 claims description 3
- 235000002595 Solanum tuberosum Nutrition 0.000 claims description 3
- 244000028419 Styrax benzoin Species 0.000 claims description 3
- 235000000126 Styrax benzoin Nutrition 0.000 claims description 3
- 235000008411 Sumatra benzointree Nutrition 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 229960002130 benzoin Drugs 0.000 claims description 3
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 claims description 3
- SYELZBGXAIXKHU-UHFFFAOYSA-N dodecyldimethylamine N-oxide Chemical compound CCCCCCCCCCCC[N+](C)(C)[O-] SYELZBGXAIXKHU-UHFFFAOYSA-N 0.000 claims description 3
- 230000002255 enzymatic effect Effects 0.000 claims description 3
- 230000005284 excitation Effects 0.000 claims description 3
- 125000000524 functional group Chemical group 0.000 claims description 3
- 235000019382 gum benzoic Nutrition 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- BZZORYDPNKSSOZ-UHFFFAOYSA-L iron(2+);dicarbamodithioate Chemical compound [Fe+2].NC([S-])=S.NC([S-])=S BZZORYDPNKSSOZ-UHFFFAOYSA-L 0.000 claims description 3
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical group O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 3
- DVEKCXOJTLDBFE-UHFFFAOYSA-N n-dodecyl-n,n-dimethylglycinate Chemical group CCCCCCCCCCCC[N+](C)(C)CC([O-])=O DVEKCXOJTLDBFE-UHFFFAOYSA-N 0.000 claims description 3
- 239000005445 natural material Substances 0.000 claims description 3
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 229960000969 phenyl salicylate Drugs 0.000 claims description 3
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 3
- 239000004631 polybutylene succinate Substances 0.000 claims description 3
- 229920002961 polybutylene succinate Polymers 0.000 claims description 3
- 229920001610 polycaprolactone Polymers 0.000 claims description 3
- 239000004632 polycaprolactone Substances 0.000 claims description 3
- 239000004626 polylactic acid Substances 0.000 claims description 3
- 229920005749 polyurethane resin Polymers 0.000 claims description 3
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- 229940100445 wheat starch Drugs 0.000 claims description 3
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 3
- TUDSTYFYBDBDRC-UHFFFAOYSA-N C=1C=CC=CC=1P(=O)C(=O)C1=CC=CC=C1 Chemical compound C=1C=CC=CC=1P(=O)C(=O)C1=CC=CC=C1 TUDSTYFYBDBDRC-UHFFFAOYSA-N 0.000 claims 1
- 239000004593 Epoxy Substances 0.000 claims 1
- 229920000578 graft copolymer Polymers 0.000 claims 1
- 229920003023 plastic Polymers 0.000 abstract description 9
- 239000004033 plastic Substances 0.000 abstract description 9
- 239000002994 raw material Substances 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 5
- 230000015556 catabolic process Effects 0.000 abstract description 5
- 238000006731 degradation reaction Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 244000005700 microbiome Species 0.000 abstract description 4
- 239000012752 auxiliary agent Substances 0.000 abstract description 3
- 241000238631 Hexapoda Species 0.000 abstract description 2
- 230000008859 change Effects 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 abstract description 2
- 229920003002 synthetic resin Polymers 0.000 description 6
- 239000000057 synthetic resin Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- RAWPGIYPSZIIIU-UHFFFAOYSA-N [benzoyl(phenyl)phosphoryl]-phenylmethanone Chemical compound C=1C=CC=CC=1C(=O)P(=O)(C=1C=CC=CC=1)C(=O)C1=CC=CC=C1 RAWPGIYPSZIIIU-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 125000003700 epoxy group Chemical group 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
- C08L3/04—Starch derivatives, e.g. crosslinked derivatives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a natural plant fiber mixture N-PFM, which comprises the following components: bamboo powder, modified starch, a coupling agent, a biodegradable enzyme, biodegradable resin and the like; the natural plant fiber mixture N-PFM is prepared by taking bamboo powder, cornstalk powder and wood powder as main raw materials, matching with raw materials such as modified starch, a coupling agent, biodegradable enzyme, biodegradable resin and the like, and performing mixing, kneading, mixing, modification and extrusion molding, wherein the mechanical property of the natural plant fiber mixture N-PFM can reach 80-90% of that of a common plastic product; because the natural plant fiber mixture N-PFM contains high degradable components and adopts food-grade modified starch bamboo powder and auxiliary agents which are superior to the modified starch bamboo powder and photosensitive materials, the natural plant fiber mixture N-PFM is easy to be absorbed by the nature under the action of factors such as sunlight, air, water, wind, frost, rain, snow, high and low temperature change, insects, microorganisms and the like, the degradation rate is greatly improved, and the degradation rate can also reach 90-97 percent.
Description
Technical Field
The invention relates to the field of high polymer materials, in particular to a natural plant fiber mixture N-PFM and a preparation method thereof.
Background
Along with the improvement of living standard of people, the demands for mineral products and natural resources are more and more, the shortage of various resources is increased, and the cost is continuously increased. In life, plastic products and paper products are widely used. However, due to shortage of petroleum resources, the price of petroleum is continuously rising, so that the cost of plastics is continuously rising and the environment is greatly polluted.
The main components of the current commonly used packaging plastics are polyethylene, polypropylene, polystyrene, polyvinyl chloride and the like, the components have strong stability, and the waste plastics are scattered in regions such as urban areas, scenic tourism areas, water bodies, two sides of roads and the like, can exist in natural environment for a long time, influence natural landscapes, cause visual pollution and cause potential harm to the ecological environment due to difficult degradation.
In order to eliminate the pollution caused by plastic products and paper products and save mineral products and natural resources, substitutes for the plastic products and the paper products are found in various parts of the world. The plant fiber product takes agricultural and sideline products as raw material sources, so the raw material sources are wide; also, since the plant fiber products have a function of being degradable, they have been widely studied.
Disclosure of Invention
The invention aims to provide a natural plant fiber mixture N-PFM and a preparation method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a natural plant fiber mixture N-PFM comprises the following substances in parts by mass:
15-50 parts of bamboo powder;
10-20 parts of corn stalks;
10-15 parts of wood waste
10-35 parts of modified starch;
10-25 parts of biodegradable resin;
0.1 to 0.7 portion of ultraviolet absorbent
0.7-6 parts of a coupling agent;
1-5 parts of biodegradable enzyme;
1-15 parts of a phase solvent;
1-10 parts of a photoinitiator;
0.5-10 parts of antioxidant;
1-8 parts of an active agent.
Wherein the average diameter of the bamboo powder, the corn stalk and the waste wood is 0.3mm, the average length of the powder is 0.3mm, the mesh number of the powder is 1000, and the water content in the powder is 2-3% by mass. The powder containing natural substances is used as an additive of the new resin, so that the natural plant fiber mixture N-PFM has the oxidation effect of free radicals generated under the excitation of ultraviolet light and the biodegradable effect;
the modified starch is a mixture of one or more of corn modified starch, potato modified starch, wheat modified starch and cassava modified starch, and the average diameter of the modified starch is 0.02 mm. The modified starch is prepared by introducing a new functional group on starch molecules or changing the size of the starch molecules and the properties of starch granules by physical, chemical or enzymatic treatment on the basis of the inherent characteristics of the natural starch, so as to improve the performance of the starch and expand the application range of the starch, thereby changing the natural characteristics of the starch, such as renewable substances, degradability and the like, and enabling the starch to be more suitable for the requirements of different applications;
the coupling agent is a silane coupling agent or a titanate coupling agent;
the biodegradable resin is a mixture of one or more of polyurethane resin, polycaprolactone resin, polylactic acid resin and polybutylene succinate resin;
the phase solvent is maleic anhydride graft compatilizer, acrylic acid graft compatilizer and epoxy group graft copolymerization compatilizer;
the photoinitiator is one or a combination of more of benzoin dimethyl ether, iron dithiocarbamate, titanium dioxide, bis-benzoyl phenyl phosphine oxide, zinc stearate, benzophenone and alpha-hydroxyalkyl benzophenone;
the antioxidant is one or more of o-diallyl bisphenol A, vinyl toluene, alkylphenol sulfide and phenyl salicylate;
the active agent is dodecyl betaine, oleic acid, lauryl dimethyl amine oxide or lauric acid.
Ultraviolet absorbent, photoinitiator, activator and the like in the natural plant fiber mixture N-PFM enable the synthetic resin body structure to generate chain reaction of free radicals under the chemical action of light, heat, oxygen and microorganisms, so that the molecular weight of the synthetic resin body structure is greatly reduced, and the generated synthetic resin body structure is deeply degraded.
The preparation method of the natural plant fiber mixture N-PFM comprises the following steps:
step 1: taking bamboo powder, cornstalk powder, waste wood powder, modified starch and biodegradable resin according to mass fraction, adding the mixture into a high-speed mixer, heating, mixing and stirring at the rotation speed of 200-300r/min and the temperature of 80-95 ℃, then taking coupling agent, phase solvent and biodegradable enzyme according to mass fraction, adjusting the rotation speed of the high-speed mixer to 200-500r/min, adjusting the temperature to 100-115 ℃, carrying out high-speed kneading and mixing, kneading and mixing for 1-2.5 h, and preparing to obtain semi-solidified substance;
step 2: adding the ultraviolet absorbent, the photoinitiator, the antioxidant and the activator into a high-speed mixer according to the mass fraction, and uniformly mixing the ultraviolet absorbent, the photoinitiator, the antioxidant and the activator with the semi-solidified substance prepared in the step 1 at the rotating speed of 200-450r/min to prepare the semi-solidified substance;
and step 3: adding the semi-solidified material prepared in the step 2 into an internal mixer, heating to 120-140 ℃, and carrying out internal mixing processing for 20-25min to prepare a blocky material;
and 4, step 4: forcibly feeding the block materials obtained by banburying in the step 3 into a double-screw extruder, melting at a melting temperature of 130-170 ℃ through a melting section of the double-screw extruder, carrying out mixing modification at a heating temperature of 140-190 ℃ in a mixing section of the double-screw extruder, then exhausting through an exhaust section of the double-screw extruder, controlling the temperature of the exhaust section at 130-150 ℃, raising the temperature and pressurizing through the exhaust section to form a vacuum environment to discharge moisture and humidity in the materials, then feeding into a homogenizing section at a temperature of 110-130 ℃ to further homogenize the materials, extruding, granulating and granulating by matching with a disc cutter, rapidly cooling the granules by a fan after granulation is finished to prevent the granules from deforming due to rotation impact, then feeding the granules obtained by cooling into a three-layer vibrating screen machine, and vibrating by using screens with different apertures to remove granules with overlarge and undersize particle sizes, selecting particles with required particle size, finally obtaining natural plant fiber mixture N-PFM particles meeting the requirement, and sending the natural plant fiber mixture N-PFM particles to a warehouse for storage for later use to finish the preparation of the material;
the prepared natural plant fiber mixture N-PFM can be put into an injection molding machine to form a clothes hanger hook packaging box and the like according to requirements.
Compared with the prior art, the invention has the beneficial effects that:
the natural plant fiber mixture N-PFM takes bamboo powder, modified starch, a coupling agent, a biodegradable enzyme, biodegradable resin and the like as raw materials, and is matched with auxiliary agents such as an ultraviolet absorbent, a photoinitiator, an activator and the like, so that the natural plant fiber mixture N-PFM can be degraded under the action of different factors in the natural environment, can be completely degraded by the nature in a short time, and has wide application range, sanitation and environmental protection.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
A natural plant fiber mixture N-PFM comprises the following substances in parts by mass:
15-50 parts of bamboo powder;
10-20 parts of corn stalks;
10-15 parts of wood waste
10-35 parts of modified starch;
10-25 parts of biodegradable resin;
0.1 to 0.7 portion of ultraviolet absorbent
0.7-6 parts of a coupling agent;
1-5 parts of biodegradable enzyme;
1-15 parts of a phase solvent;
1-10 parts of a photoinitiator;
0.5-10 parts of antioxidant;
1-8 parts of an active agent.
Wherein the average diameter of the bamboo powder, the corn stalk and the waste wood is 0.3mm, the average length of the powder is 0.3mm, the mesh number of the powder is 1000, and the water content in the powder is 2-3% by mass. The powder containing natural substances is used as an additive of the new resin, so that the natural plant fiber mixture N-PFM has the oxidation effect of free radicals generated under the excitation of ultraviolet light and the biodegradable effect;
the modified starch is a mixture of one or more of corn modified starch, potato modified starch, wheat modified starch and cassava modified starch, and the average diameter of the modified starch is 0.02 mm. The modified starch is prepared by introducing a new functional group on starch molecules or changing the size of the starch molecules and the properties of starch granules by physical, chemical or enzymatic treatment on the basis of the inherent characteristics of the natural starch, so as to improve the performance of the starch and expand the application range of the starch, thereby changing the natural characteristics of the starch, such as renewable substances, degradability and the like, and enabling the starch to be more suitable for the requirements of different applications;
the coupling agent is a silane coupling agent or a titanate coupling agent;
the biodegradable resin is a mixture of one or more of polyurethane resin, polycaprolactone resin, polylactic acid resin and polybutylene succinate resin;
the phase solvent is maleic anhydride graft compatilizer, acrylic acid graft compatilizer and epoxy group graft copolymerization compatilizer;
the photoinitiator is one or a combination of more of benzoin dimethyl ether, iron dithiocarbamate, titanium dioxide, bis-benzoyl phenyl phosphine oxide, zinc stearate, benzophenone and alpha-hydroxyalkyl benzophenone;
the antioxidant is one or more of o-diallyl bisphenol A, vinyl toluene, alkylphenol sulfide and phenyl salicylate;
the active agent is dodecyl betaine, oleic acid, lauryl dimethyl amine oxide or lauric acid.
Ultraviolet absorbent, photoinitiator, activator and the like in the natural plant fiber mixture N-PFM enable the synthetic resin body structure to generate chain reaction of free radicals under the chemical action of light, heat, oxygen and microorganisms, so that the molecular weight of the synthetic resin body structure is greatly reduced, and the generated synthetic resin body structure is deeply degraded.
The preparation method of the natural plant fiber mixture N-PFM comprises the following steps:
step 1: taking bamboo powder, cornstalk powder, waste wood powder, modified starch and biodegradable resin according to mass fraction, adding the mixture into a high-speed mixer, heating, mixing and stirring at the rotation speed of 200-300r/min and the temperature of 80-95 ℃, then taking coupling agent, phase solvent and biodegradable enzyme according to mass fraction, adjusting the rotation speed of the high-speed mixer to 200-500r/min, adjusting the temperature to 100-115 ℃, carrying out high-speed kneading and mixing, kneading and mixing for 1-2.5 h, and preparing to obtain semi-solidified substance;
step 2: adding the ultraviolet absorbent, the photoinitiator, the antioxidant and the activator into a high-speed mixer according to the mass fraction, and uniformly mixing the ultraviolet absorbent, the photoinitiator, the antioxidant and the activator with the semi-solidified substance prepared in the step 1 at the rotating speed of 200-450r/min to prepare the semi-solidified substance;
and step 3: adding the semi-solidified material prepared in the step 2 into an internal mixer, heating to 120-140 ℃, and carrying out internal mixing processing for 20-25min to prepare a blocky material;
and 4, step 4: forcibly feeding the block materials obtained by banburying in the step 3 into a double-screw extruder, melting at a melting temperature of 130-170 ℃ through a melting section of the double-screw extruder, carrying out mixing modification at a heating temperature of 140-190 ℃ in a mixing section of the double-screw extruder, then exhausting through an exhaust section of the double-screw extruder, controlling the temperature of the exhaust section at 130-150 ℃, raising the temperature and pressurizing through the exhaust section to form a vacuum environment to discharge moisture and humidity in the materials, then feeding into a homogenizing section at a temperature of 110-130 ℃ to further homogenize the materials, extruding, granulating and granulating by matching with a disc cutter, rapidly cooling the granules by a fan after granulation is finished to prevent the granules from deforming due to rotation impact, then feeding the granules obtained by cooling into a three-layer vibrating screen machine, and vibrating by using screens with different apertures to remove granules with overlarge and undersize particle sizes, and selecting particles with required particle size, finally obtaining the natural plant fiber mixture N-PFM particles meeting the requirement, and sending the natural plant fiber mixture N-PFM particles to a warehouse for storage and standby application to finish the preparation of the material.
The prepared natural plant fiber mixture N-PFM can be put into an injection molding machine to form a clothes hanger hook packaging box and the like according to requirements.
The natural plant fiber mixture N-PFM is prepared by taking bamboo powder, cornstalk powder and wood powder as main raw materials, matching with raw materials such as modified starch, a coupling agent, biodegradable enzyme, biodegradable resin and the like, and performing mixing, kneading, mixing, modification and extrusion molding on the raw materials, so that the bamboo-wood powder fully-biodegradable material is a novel material without adding any plastic, the mechanical property of the bamboo-wood powder fully-biodegradable material can reach 80-90% of that of a common plastic product, and the requirement on the use performance can be completely met. Because the natural plant fiber mixture N-PFM contains high degradable components and adopts food-grade modified starch bamboo powder and auxiliary agents which are superior to the modified starch bamboo powder and photosensitive materials, the natural plant fiber mixture N-PFM is easy to be absorbed by the nature under the action of factors such as sunlight, air, water, wind, frost, rain, snow, high and low temperature change, insects, microorganisms and the like, the degradation rate is greatly improved, and the degradation rate can also reach 90-97 percent.
The first embodiment is a method for preparing a natural plant fiber mixture N-PFM, which comprises the following steps:
step 1: adding 20 parts of bamboo powder, 30 parts of modified starch and 15 parts of biodegradable resin into a high-speed mixer in parts by mass, heating, mixing and stirring at the temperature of 80-95 ℃ at the rotation speed of 200-300r/min, adding 1 part of coupling agent, 5 parts of phase solvent and 3 parts of biodegradable enzyme in parts by mass, adjusting the rotation speed of the high-speed mixer to 500-r/min, adjusting the temperature to 115 ℃ at 100-115 ℃, carrying out high-speed kneading and mixing for 1-2.5 hours, and preparing to obtain a semi-solidified substance;
step 2: adding 10 parts of photoinitiator, 10 parts of antioxidant and 5 parts of active agent in parts by mass into a high-speed mixer, and uniformly mixing the mixture with the semi-solidified substance prepared in the step 1 at the rotating speed of 200-450r/min to prepare a semi-solidified substance;
and step 3: adding the semi-solidified material prepared in the step 2 into an internal mixer, heating to 120-140 ℃, and carrying out internal mixing processing for 20-25min to prepare a blocky material;
and 4, step 4: forcibly feeding the block materials obtained by banburying in the step 3 into a double-screw extruder, melting at a melting temperature of 130-170 ℃ through a melting section of the double-screw extruder, carrying out mixing modification at a heating temperature of 140-190 ℃ in a mixing section of the double-screw extruder, then exhausting through an exhaust section of the double-screw extruder, controlling the temperature of the exhaust section at 130-150 ℃, raising the temperature and pressurizing through the exhaust section to form a vacuum environment to discharge moisture and humidity in the materials, then feeding into a homogenizing section at a temperature of 110-130 ℃ to further homogenize the materials, extruding, granulating and granulating by matching with a disc cutter, rapidly cooling the granules by a fan after granulation is finished to prevent the granules from deforming due to rotation impact, then feeding the granules obtained by cooling into a three-layer vibrating screen machine, and vibrating by using screens with different apertures to remove granules with overlarge and undersize particle sizes, and selecting particles with required particle size, finally obtaining the natural plant fiber mixture N-PFM particles meeting the requirement, and sending the natural plant fiber mixture N-PFM particles to a warehouse for storage and standby application to finish the preparation of the material. And (3) vibrating through screens with different apertures to remove particles with overlarge and undersize particle sizes, selecting particles with required particle sizes, finally obtaining natural plant fiber mixture N-PFM particles meeting requirements, and sending the natural plant fiber mixture N-PFM particles to a warehouse for storage and standby, thereby completing the preparation of the material.
Example two, a method for preparing a natural plant fiber mixture N-PFM, comprising the steps of:
step 1: adding 30 parts of bamboo powder, 30 parts of modified starch and 10 parts of biodegradable resin into a high-speed mixer, heating, mixing and stirring at the rotation speed of 200-300r/min and the temperature of 80-95 ℃, adding 1 part of coupling agent, 4 parts of phase solvent and 2 parts of biodegradable enzyme according to the parts by mass, adjusting the rotation speed of the high-speed mixer to 200-500r/min, adjusting the temperature to 100-115 ℃, carrying out high-speed kneading and mixing, kneading and mixing for 1-2.5 hours, and preparing to obtain a semi-solidified substance;
step 2: adding 10 parts of photoinitiator, 10 parts of antioxidant and 5 parts of active agent in parts by mass into a high-speed mixer, and uniformly mixing the mixture with the semi-solidified substance prepared in the step 1 at the rotating speed of 200-450r/min to prepare a semi-solidified substance;
and step 3: adding the semi-solidified material prepared in the step 2 into an internal mixer, heating to 120-140 ℃, and carrying out internal mixing processing for 20-25min to prepare a blocky material;
and 4, step 4: forcibly feeding the block materials obtained by banburying in the step 3 into a double-screw extruder, melting at a melting temperature of 130-170 ℃ through a melting section of the double-screw extruder, carrying out mixing modification at a heating temperature of 140-190 ℃ in a mixing section of the double-screw extruder, then exhausting through an exhaust section of the double-screw extruder, controlling the temperature of the exhaust section at 130-150 ℃, raising the temperature and pressurizing through the exhaust section to form a vacuum environment to discharge moisture and humidity in the materials, then feeding into a homogenizing section at a temperature of 110-130 ℃ to further homogenize the materials, extruding, granulating and granulating by matching with a disc cutter, rapidly cooling the granules by a fan after granulation is finished to prevent the granules from deforming due to rotation impact, then feeding the granules obtained by cooling into a three-layer vibrating screen machine, and vibrating by using screens with different apertures to remove granules with overlarge and undersize particle sizes, and selecting particles with required particle size, finally obtaining the natural plant fiber mixture N-PFM particles meeting the requirement, and sending the natural plant fiber mixture N-PFM particles to a warehouse for storage and standby application to finish the preparation of the material. And (3) vibrating through screens with different apertures to remove particles with overlarge and undersize particle sizes, selecting particles with required particle sizes, finally obtaining natural plant fiber mixture N-PFM particles meeting requirements, and sending the natural plant fiber mixture N-PFM particles to a warehouse for storage and standby, thereby completing the preparation of the material.
Example three, a method for preparing a natural plant fiber mixture N-PFM, comprising the steps of:
step 1: adding 40 parts of bamboo powder, 15 parts of modified starch and 15 parts of biodegradable resin into a high-speed mixer in parts by mass, heating, mixing and stirring at the temperature of 80-95 ℃ at the rotation speed of 200-300r/min, adding 1 part of coupling agent, 10 parts of phase solvent and 2 parts of biodegradable enzyme in parts by mass, adjusting the rotation speed of the high-speed mixer to 500-r/min, adjusting the temperature to 115 ℃ at 100-115 ℃, carrying out high-speed kneading and mixing for 1-2.5 hours, and preparing to obtain a semi-solidified substance;
step 2: adding 5 parts of photoinitiator, 10 parts of antioxidant and 3 parts of activator into a high-speed mixer according to the mass parts, and uniformly mixing the mixture with the semi-solidified substance prepared in the step 1 at the rotating speed of 200-450r/min to prepare the semi-solidified substance;
and step 3: adding the semi-solidified material prepared in the step 2 into an internal mixer, heating to 120-140 ℃, and carrying out internal mixing processing for 20-25min to prepare a blocky material;
and 4, step 4: forcibly feeding the block materials obtained by banburying in the step 3 into a double-screw extruder, melting at a melting temperature of 130-170 ℃ through a melting section of the double-screw extruder, carrying out mixing modification at a heating temperature of 140-190 ℃ in a mixing section of the double-screw extruder, then exhausting through an exhaust section of the double-screw extruder, controlling the temperature of the exhaust section at 130-150 ℃, raising the temperature and pressurizing through the exhaust section to form a vacuum environment to discharge moisture and humidity in the materials, then feeding into a homogenizing section at a temperature of 110-130 ℃ to further homogenize the materials, extruding, granulating and granulating by matching with a disc cutter, rapidly cooling the granules by a fan after granulation is finished to prevent the granules from deforming due to rotation impact, then feeding the granules obtained by cooling into a three-layer vibrating screen machine, and vibrating by using screens with different apertures to remove granules with overlarge and undersize particle sizes, and selecting particles with required particle size, finally obtaining the natural plant fiber mixture N-PFM particles meeting the requirement, and sending the natural plant fiber mixture N-PFM particles to a warehouse for storage and standby application to finish the preparation of the material. And (3) vibrating through screens with different apertures to remove particles with overlarge and undersize particle sizes, selecting particles with required particle sizes, finally obtaining natural plant fiber mixture N-PFM particles meeting requirements, and sending the natural plant fiber mixture N-PFM particles to a warehouse for storage and standby, thereby completing the preparation of the material.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (10)
1. The natural plant fiber mixture N-PFM is characterized by comprising the following components in parts by mass:
15-50 parts of bamboo powder;
10-20 parts of corn stalks;
10-15 parts of wood waste
10-35 parts of modified starch;
10-25 parts of biodegradable resin;
0.1 to 0.7 portion of ultraviolet absorbent
0.7-6 parts of a coupling agent;
1-5 parts of biodegradable enzyme;
1-15 parts of a phase solvent;
1-10 parts of a photoinitiator;
0.5-10 parts of antioxidant;
1-8 parts of an active agent.
2. The N-PFM as claimed in claim 1, wherein the average diameter of the bamboo powder, corn stalk and wood waste is 0.3mm, the average length of the powder is 0.3mm, the mesh number of the powder is 1000, and the moisture content in the powder is 2-3% by mass. The powder containing natural substances is used as an additive of the new resin, so that the natural plant fiber mixture N-PFM has the oxidation effect of free radicals generated under the excitation of ultraviolet light and the biodegradable effect.
3. The N-PFM mixture of natural plant fibers as claimed in claim 1, wherein said modified starch is a mixture of one or more of corn modified starch, potato modified starch, wheat modified starch, tapioca modified starch, with an average diameter of 0.02 mm. The modified starch is prepared by introducing new functional groups on starch molecules or changing the size of the starch molecules and the properties of starch granules by physical, chemical or enzymatic treatment on the basis of the inherent characteristics of the natural starch, so as to improve the performance of the starch and expand the application range of the starch, thereby changing the natural characteristics of the starch, such as renewable substances, degradability and the like, and being more suitable for the requirements of different applications.
4. The natural plant fiber mixture N-PFM according to claim 1, wherein said coupling agent is a silane coupling agent or a titanate coupling agent.
5. The natural plant fiber mixture N-PFM according to claim 1, wherein said biodegradable resin is a mixture of one or more of polyurethane resin, polycaprolactone resin, polylactic acid resin, polybutylene succinate resin.
6. The natural plant fiber mixture N-PFM of claim 1, wherein said compatibilizer is maleic anhydride graft compatibilizer, acrylic acid graft compatibilizer, epoxy graft copolymer compatibilizer.
7. The natural plant fiber mixture N-PFM of claim 1, wherein said photoinitiator is one or more combinations of benzoin bis methyl ether, iron dithiocarbamate, titanium dioxide, bis benzoylphenylphosphine oxide, zinc stearate, benzophenone, alpha-hydroxyalkylphenone.
8. The natural plant fiber mixture N-PFM of claim 1, wherein said antioxidant is one or more of ortho-diallyl bisphenol A, vinyl toluene, alkyl phenol thioether, phenyl salicylate.
9. The natural plant fiber mixture N-PFM of claim 1, wherein said active agent is dodecyl betaine, oleic acid, lauryl dimethyl amine oxide or lauric acid.
10. The preparation method of the natural plant fiber mixture N-PFM is characterized by comprising the following steps:
step 1: taking bamboo powder, cornstalk powder, waste wood powder, modified starch and biodegradable resin according to mass fraction, adding the mixture into a high-speed mixer, heating, mixing and stirring at the rotation speed of 200-300r/min and the temperature of 80-95 ℃, then taking coupling agent, phase solvent and biodegradable enzyme according to mass fraction, adjusting the rotation speed of the high-speed mixer to 200-500r/min, adjusting the temperature to 100-115 ℃, carrying out high-speed kneading and mixing, kneading and mixing for 1-2.5 h, and preparing to obtain semi-solidified substance;
step 2: adding the ultraviolet absorbent, the photoinitiator, the antioxidant and the activator into a high-speed mixer according to the mass fraction, and uniformly mixing the ultraviolet absorbent, the photoinitiator, the antioxidant and the activator with the semi-solidified substance prepared in the step 1 at the rotating speed of 200-450r/min to prepare the semi-solidified substance;
and step 3: adding the semi-solidified material prepared in the step 2 into an internal mixer, heating to 120-140 ℃, and carrying out internal mixing processing for 20-25min to prepare a blocky material;
and 4, step 4: forcibly feeding the block materials obtained by banburying in the step 3 into a double-screw extruder, melting at a melting temperature of 130-170 ℃ through a melting section of the double-screw extruder, carrying out mixing modification at a heating temperature of 140-190 ℃ in a mixing section of the double-screw extruder, then exhausting through an exhaust section of the double-screw extruder, controlling the temperature of the exhaust section at 130-150 ℃, raising the temperature and pressurizing through the exhaust section to form a vacuum environment to discharge moisture and humidity in the materials, then feeding into a homogenizing section at a temperature of 110-130 ℃ to further homogenize the materials, extruding, granulating and granulating by matching with a disc cutter, rapidly cooling the granules by a fan after granulation is finished to prevent the granules from deforming due to rotation impact, then feeding the granules obtained by cooling into a three-layer vibrating screen machine, and vibrating by using screens with different apertures to remove granules with overlarge and undersize particle sizes, selecting particles with required particle size, finally obtaining natural plant fiber mixture N-PFM particles meeting the requirement, and sending the natural plant fiber mixture N-PFM particles to a warehouse for storage for later use to finish the preparation of the material;
the prepared natural plant fiber mixture N-PFM can be put into an injection molding machine to form a clothes hanger hook packaging box and the like according to requirements.
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| CN113583466A (en) * | 2021-07-22 | 2021-11-02 | 湖北嘉鑫环保新材料科技有限公司 | Moderate cross-linked starch biodegradable plastic and preparation method thereof |
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| CN110305456A (en) * | 2019-07-02 | 2019-10-08 | 汕头市雷氏塑化科技有限公司 | A kind of bamboo powder Biodegradable material and preparation method thereof |
| CN110343397A (en) * | 2019-07-02 | 2019-10-18 | 汕头市雷氏塑化科技有限公司 | A kind of bamboo powder full-biodegradable material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110305456A (en) * | 2019-07-02 | 2019-10-08 | 汕头市雷氏塑化科技有限公司 | A kind of bamboo powder Biodegradable material and preparation method thereof |
| CN110343397A (en) * | 2019-07-02 | 2019-10-18 | 汕头市雷氏塑化科技有限公司 | A kind of bamboo powder full-biodegradable material and preparation method thereof |
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| CN113583466A (en) * | 2021-07-22 | 2021-11-02 | 湖北嘉鑫环保新材料科技有限公司 | Moderate cross-linked starch biodegradable plastic and preparation method thereof |
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