CN117652332A - Method for preparing noctilucent soil covering material by utilizing tree wastes - Google Patents
Method for preparing noctilucent soil covering material by utilizing tree wastes Download PDFInfo
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- CN117652332A CN117652332A CN202311414748.1A CN202311414748A CN117652332A CN 117652332 A CN117652332 A CN 117652332A CN 202311414748 A CN202311414748 A CN 202311414748A CN 117652332 A CN117652332 A CN 117652332A
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- noctilucent
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- soil covering
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- 239000000463 material Substances 0.000 title claims abstract description 80
- 239000002699 waste material Substances 0.000 title claims abstract description 35
- 239000002689 soil Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000002245 particle Substances 0.000 claims abstract description 87
- 238000003756 stirring Methods 0.000 claims abstract description 42
- 239000000725 suspension Substances 0.000 claims abstract description 31
- 229920000642 polymer Polymers 0.000 claims abstract description 17
- 239000002023 wood Substances 0.000 claims abstract description 17
- 239000000243 solution Substances 0.000 claims abstract description 16
- 239000007864 aqueous solution Substances 0.000 claims abstract description 11
- 239000002270 dispersing agent Substances 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 150000003839 salts Chemical class 0.000 claims abstract description 8
- 238000005406 washing Methods 0.000 claims abstract description 8
- 238000002425 crystallisation Methods 0.000 claims abstract description 7
- 239000001993 wax Substances 0.000 claims description 38
- -1 polyethylene Polymers 0.000 claims description 14
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 13
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 13
- XMGQYMWWDOXHJM-JTQLQIEISA-N (+)-α-limonene Chemical compound CC(=C)[C@@H]1CCC(C)=CC1 XMGQYMWWDOXHJM-JTQLQIEISA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000005084 Strontium aluminate Substances 0.000 claims description 10
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- 239000004698 Polyethylene Substances 0.000 claims description 7
- 239000012188 paraffin wax Substances 0.000 claims description 7
- 229920000573 polyethylene Polymers 0.000 claims description 7
- 239000004793 Polystyrene Substances 0.000 claims description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 6
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 claims description 6
- FNWBQFMGIFLWII-UHFFFAOYSA-N strontium aluminate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Sr+2].[Sr+2] FNWBQFMGIFLWII-UHFFFAOYSA-N 0.000 claims description 6
- 229920002223 polystyrene Polymers 0.000 claims description 5
- 239000002202 Polyethylene glycol Substances 0.000 claims description 4
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 4
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 4
- XMGQYMWWDOXHJM-UHFFFAOYSA-N limonene Chemical compound CC(=C)C1CCC(C)=CC1 XMGQYMWWDOXHJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- 229920001223 polyethylene glycol Polymers 0.000 claims description 4
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 claims description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 4
- VNDYJBBGRKZCSX-UHFFFAOYSA-L zinc bromide Chemical compound Br[Zn]Br VNDYJBBGRKZCSX-UHFFFAOYSA-L 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- 229910001622 calcium bromide Inorganic materials 0.000 claims description 3
- WGEFECGEFUFIQW-UHFFFAOYSA-L calcium dibromide Chemical compound [Ca+2].[Br-].[Br-] WGEFECGEFUFIQW-UHFFFAOYSA-L 0.000 claims description 3
- OTCKOJUMXQWKQG-UHFFFAOYSA-L magnesium bromide Chemical compound [Mg+2].[Br-].[Br-] OTCKOJUMXQWKQG-UHFFFAOYSA-L 0.000 claims description 3
- 229910001623 magnesium bromide Inorganic materials 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000008117 stearic acid Substances 0.000 claims description 3
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 claims description 2
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical group ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 claims description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 2
- 150000004645 aluminates Chemical class 0.000 claims description 2
- SWLVFNYSXGMGBS-UHFFFAOYSA-N ammonium bromide Chemical compound [NH4+].[Br-] SWLVFNYSXGMGBS-UHFFFAOYSA-N 0.000 claims description 2
- 229920000359 diblock copolymer Polymers 0.000 claims description 2
- 150000002191 fatty alcohols Chemical class 0.000 claims description 2
- 239000012266 salt solution Substances 0.000 claims description 2
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 claims description 2
- 229920000428 triblock copolymer Polymers 0.000 claims description 2
- 239000008096 xylene Substances 0.000 claims description 2
- 229940102001 zinc bromide Drugs 0.000 claims description 2
- 239000000843 powder Substances 0.000 description 27
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- 229920003023 plastic Polymers 0.000 description 7
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- 239000000919 ceramic Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000004005 microsphere Substances 0.000 description 3
- 231100000252 nontoxic Toxicity 0.000 description 3
- 230000003000 nontoxic effect Effects 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000013138 pruning Methods 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920002565 Polyethylene Glycol 400 Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000749 insecticidal effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000010299 mechanically pulverizing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 description 1
- JLFNLZLINWHATN-UHFFFAOYSA-N pentaethylene glycol Chemical compound OCCOCCOCCOCCOCCO JLFNLZLINWHATN-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920005596 polymer binder Polymers 0.000 description 1
- 239000002491 polymer binding agent Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000009461 vacuum packaging Methods 0.000 description 1
- 239000002916 wood waste Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to the technical field of landscaping, and discloses a method for preparing luminous soil covering materials by utilizing tree wastes. The invention discloses a method for preparing luminous soil covering material by utilizing tree wastes, which comprises the following steps: (1) comminuting wood or tree branch waste; (2) Adding a low-crystallization transparent polymer solution into molten wax, and then adding noctilucent material particles to obtain a suspension A; (3) Mixing a dispersing agent and an aqueous solution of salt, and adding the suspension A obtained in the step (2) to form a suspension B; (4) Adding the particles obtained in the step (1) into the suspension B prepared in the step (3), stirring, separating, washing and drying to obtain the soil covering particles with noctilucent function. The noctilucent particles obtained by the invention have long service life, are not easy to be taken away by rainwater and have good luminous performance.
Description
Technical Field
The invention belongs to the technical field of landscaping, and particularly relates to a method for preparing luminous soil covering materials by utilizing tree wastes.
Background
Urban afforestation trees are periodically pruned to produce a large amount of branch waste. At present, the wastes are utilized by composting, preparing biomass fuel or directly using the biomass fuel as fuel and the like, the recycling utilization quality is not high, and the added value of the regenerated product is relatively low. The soil covering material produced by the waste is used for covering the bare ground surface in the city, so that not only can the urban dust pollution be effectively treated, but also the organic matters in the branches return to the soil, the soil fertility can be increased, and the carbon dioxide emission caused by the incineration of the waste can be reduced.
The published paper "research and application of greening waste conversion green cover" (green environment-friendly building materials, pages 248-249 in 2019 12, ma Yuxiang, qin Fei, li Bowen, song Wei and Liu Pan) reports that branches are crushed, sterilized and dried, and then mixed with flame retardant, pigment, polymer binder and the like to form soil cover materials with various shapes. Chinese patent publication No. CN105557406A discloses a method for producing organic covering by using landscaping waste, which comprises mechanically pulverizing the landscaping waste generated in the curing and planting processes, wherein the size of the chips is not more than 5cm, performing enzymolysis on lignin and bark in the chips after mechanical pulverization, spraying phosphate flame retardant solution, uniformly spraying wood coloring agent to dye the landscaping waste chips, and finally performing vacuum packaging after insecticidal sterilization and drying. The technology adopts landscaping waste as raw materials to prepare the organic covering, so that the resource utilization is more sufficient, and the organic covering prepared by crushing, enzymolysis, drying, flame retardant treatment, dyeing, sterilization and disinsection is fully sterilized, is not easy to rot, and is more sanitary in package and easy to store. The covering material prepared by the technology can cover soil, prevent dust and beautify environment, but does not have a night luminous function.
At present, the luminous function material is mainly endowed with the luminous function of the material through two ways, one way is to add the light-storage luminous powder into the raw materials for producing the material, and then the material is mixed and molded according to the original processing technology of the material. As proposed in chinese patent publication CN105670236a, a preparation method of a noctilucent PET resin is that a noctilucent colorant made of strontium aluminate luminescent powder is mixed with ethylene bis stearamide, polypropylene grafted maleic anhydride and PET, and then added into a twin screw extruder for extrusion granulation, and plastic particles can be used for manufacturing various noctilucent plastic parts. Chinese patent publication CN106186827A discloses a pouring type noctilucent terrace and a preparation method, polyurethane, EVA and noctilucent stone are prepared according to a proportion, uniformly stirred by a drum-type stirrer, and then poured into the noctilucent terrace with a night luminous function. However, the noctilucent functional material obtained by the technical scheme only really plays a role of a small amount of noctilucent powder on the surface of the material, and most of noctilucent powder dispersed in the material cannot play a role of luminescence, so the noctilucent powder has high consumption and high cost. Another method for giving the noctilucent property to the material is to bond or coat the noctilucent material on the surface of the material or the component, for example, chinese patent publication CN108467672a proposes a preparation method of a modified resin-based noctilucent paint, which uses polyurethane as a base material, self-made magnesium fluoride and fluorite powder as luminous raw materials, mixed colloid as a modifier, and anhydrous ethanol, ethylene glycol butyl ether and the like as auxiliary materials to prepare the modified resin-based noctilucent paint, and the material or the component coated with the paint on the surface can obtain the noctilucent function. The technical scheme for preparing noctilucent ceramics by using the Chinese patent publication CN111777332A is that noctilucent glaze prepared in advance by using noctilucent powder, surfactant, glaze powder and other raw materials is smeared on unglazed ceramic products of high-temperature fired highly porcelain ceramics, and after the unglazed ceramic products are dried in the air, the ceramic products are fired, and the noctilucent ceramics are obtained after firing. The night luminous material preparation method can reduce the consumption of luminous powder, but the luminous powder is easily influenced by other chemical components and high temperature in the preparation process to lose luminous performance. In addition, the following problems also exist in the prior art for wood chip particles prepared by crushing waste wood or branches:
(1) The fine wood chips or particles obtained by crushing have different sizes and shapes, and the surface is rough, for example, the coating containing noctilucent powder is adopted, and a layer of coating is difficult to uniformly coat on the surface by adopting a common coating or bonding method.
(2) With the coating application process, the coating film forms a film that tends to cause the strands and particles to adhere together rather than the dispersed strands particles.
(3) After the coating is coated with the coating with noctilucent function, the waterproof coating can completely wrap the wood chips, and the wood chips float on the water surface when meeting rainwater and are easily washed away and lost.
(4) The method for bonding the noctilucent powder on the surfaces of the wood particles by adopting the bonding agent is easy to cause the accumulation of the noctilucent powder on the surfaces of the wood particles due to small noctilucent powder particles and irregular surfaces of the wood chips, and the covering material with even noctilucent powder coverage can not be obtained.
(5) The noctilucent powder is directly used without treatment, and is easy to be soaked by water in the using process to lose the luminescence property.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks and disadvantages of the prior art, a primary object of the present invention is to provide a method for preparing a noctilucent soil covering material using wood waste.
The aim of the invention is achieved by the following scheme:
a method for preparing noctilucent soil covering material by utilizing tree wastes, comprising the following steps:
(1) Crushing wood or branch waste to obtain particles of wood or branch waste;
(2) Dissolving a low-crystallization transparent polymer by using an organic solvent to obtain a polymer solution, adding the polymer solution into molten wax, adding luminous material particles, and stirring to obtain a suspension A in which the luminous material particles are dispersed;
(3) Mixing a dispersing agent and an aqueous solution of salt, adding the suspension A obtained in the step (2), and stirring to form a suspension B;
(4) Adding the particles obtained in the step (1) into the suspension B prepared in the step (3), stirring, separating, washing and drying to obtain the soil covering particles with noctilucent function.
The crushing in the step (1) is to crush wood or branch waste into particles with the size ranging from 0.5 cm to 2 cm.
The low-crystallization transparent polymer in the step (2) is at least one of Polystyrene (PS), butadiene-styrene diblock copolymer (SB), butadiene-styrene triblock copolymer (SBS) and ethylene-vinyl acetate copolymer (EVA). The polymers are added to improve the light transmission of the wax coating and to increase the adhesion between the wax and the particle surface of the wood or tree branch waste.
The organic solvent in the step (2) is at least one of toluene, xylene, ethyl acetate, dichloroethane, dichloroethylene, d-limonene and dipentene, and is preferably a non-toxic and harmless natural solvent d-limonene.
The melting point of the wax in the step (2) is 50-100 ℃, and the wax comprises at least one of paraffin wax, polyethylene wax, fischer-Tropsch wax and polypropylene wax; the molten wax is a wax heated to a temperature above its melting point.
The particle size range of the noctilucent material particles in the step (2) is 10-100 mu m, and the noctilucent material is a nontoxic and non-radioactive light-accumulating type noctilucent material, can absorb sunlight or lamplight in the daytime and store the sunlight or lamplight in the material, and then the stored energy is converted into light to be released in the evening or dark environment; is at least one of sulfide/oxysulfide system, aluminate system and silicate system luminous material, preferably strontium aluminate luminous material or rare earth strontium aluminate luminous material.
The mass percentage of the low-crystallization transparent polymer in the polymer solution in the step (2) is 1-5%.
The mass ratio of the wax to the polymer solution to the noctilucent material particles in the step (2) is 100:1 to 10:0.1 to 1.
The stirring conditions in the step (2) are as follows: stirring at 50-100 deg.c and 500-1000 r/min for 30-60 min.
And (3) one end of the molecule of the dispersing agent is provided with a hydrophilic group, and the other end of the molecule of the dispersing agent is provided with a lipophilic group, wherein the dispersing agent comprises at least one of stearic acid, polyethylene glycol ether, alkylphenol ethoxylates and fatty alcohol ethoxylates.
The aqueous solution of the salt in the step (3) is one of sodium bromide, potassium bromide, magnesium bromide, calcium bromide, ammonium bromide and zinc bromide; the density of the aqueous salt solution is in the range of 1.3-1.6 g/mL.
The mass ratio of the aqueous solution of the salt, the dispersing agent and the suspension A in the step (3) is 100:0.1 to 1:1 to 20.
The temperature of the mixing in the step (3) is 50-100 ℃; the stirring rotating speed is 1000-5000 r/min; the stirring time is 30-60 min.
The mass ratio of the particles to the suspension B in the step (4) is 1-10:100.
The stirring in the step (4) is specifically as follows: the temperature is controlled to be 1-5 ℃ lower than the melting temperature of the wax during stirring, the stirring speed is 10-100 r/min, the stirring time is 10-30 min, the temperature is reduced to normal temperature, and the stirring is continued for 20-30 min.
And (4) washing the particles for 1-2 times by using normal-temperature clean water.
The mechanism of the invention is as follows:
the light-accumulating luminous material can store light energy when being irradiated by natural light in the daytime and then emits light at night. The invention cuts branches of urban greening trees into small particles with a certain size, and loads the light-storage luminous material on the surface of the small particles to prepare the night luminous covering material which can be used for bare soil in places such as hotels, public leisure, household potting and the like, thereby achieving the purposes of preventing water and soil loss, reducing dust emission, beautifying cities, beautifying night landscapes and the like.
The luminous covering material prepared by the invention has the advantages that as the luminous material particles are wrapped by the low-molecular wax in advance and then are bonded on the surfaces of the particles, the phenomenon that the luminous material is invalid due to the harmful factors such as water immersion, bioerosion, air oxidation and loss can be effectively avoided, and the service life of the luminous material is prolonged. In addition, as the noctilucent material is adhered on the surface of the particles in a particle mode, the use characteristics of the particles as garden covering materials are not affected.
Compared with the prior art, the invention has the following advantages:
(1) The luminous material is coated by the low-molecular wax and then is loaded on the surface of the particles, so that the consumption of the luminous material is reduced, the cost is reduced, and in addition, the luminous material particles are coated by the low-molecular wax, so that the luminous material can be effectively prevented from being invalid due to water immersion, bioerosion and air oxidation, and the service life of the luminous material is prolonged.
(2) The invention prepares the noctilucent material into the suspension of the particles wrapped by the wax, then adheres the particles on the surfaces of the particles at a proper temperature, can not completely cover the whole surfaces of the particles, leaves gaps between the particles, and does not hinder the water absorption and the air permeability of the particles after loading the noctilucent material. The particles can absorb water quickly after rain to increase the density, so that the particles are not easy to be taken away by the rain.
(3) The invention can adopt natural nontoxic d-limonene as a solvent to realize that the polymer can be mixed with low molecular wax at a lower temperature, and the natural solvent is derived from orange peel and orange peel, so that the invention is environment-friendly and healthy, and can permanently emit orange fragrance.
(4) The invention adopts the aqueous solution of salt as the suspension dispersion liquid of the noctilucent material particles, and solves the problems that the noctilucent material particles are too large and too heavy to form stable suspension liquid after being coated by wax.
Detailed Description
The present invention will be described in further detail with reference to examples, but embodiments of the present invention are not limited thereto. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
The reagents used in the examples are commercially available as usual unless otherwise specified.
Polystyrene plastic: purchased from chinese petrochemical company, inc, with an average molecular weight of 150000.
Ethylene-vinyl acetate copolymer (EVA): available from the middle (Guangdong) refining Co., ltd, and has an average molecular weight of 12000.
Polyethylene wax: purchased from Guangdong New Yongdong Co., ltd, and having an average molecular weight of 2000.
Fischer-Tropsch wax: available from Qingdao Sauno chemical Co., ltd, and having an average molecular weight of 800.
Paraffin wax: purchased from Guangdong New Yongdong Co., ltd, and having an average molecular weight of 500.
Polyethylene glycol ether: purchased from Yangzi petrochemical-Basv Limited, PEG400.
Alkylphenol ethoxylates: purchased from Jiangsu province sea-An petrochemical plant, OP-15.
Strontium aluminate noctilucent powder: purchased from Guangdong Yuan Tai chemical industry limited, purity 99.5%.
Rare earth strontium aluminate noctilucent powder: the purity of the product obtained from Shenzhen Yaode is 99.5%.
Example 1
(1) The branches generated by pruning the urban road greening trees are crushed into particles with the size range of 0.5-2 cm.
(2) 1g of polystyrene plastic was dissolved in 99 g of d-limonene to prepare a 1% polystyrene plastic solution; then 100g of paraffin wax with the melting point of 50 ℃ is heated to 50 ℃, 1g of 1 percent polystyrene solution and 0.1g of strontium aluminate noctilucent powder with the particle size of 10 mu m are added while stirring, and stirring is carried out for 60min at the temperature of 50 ℃ at the rotating speed of 1000r/min, so that noctilucent particles are uniformly dispersed in the molten paraffin wax;
(3) Mixing 0.1g stearic acid with 100g sodium bromide aqueous solution with the density of 1.3g/mL at 50 ℃, adding 10g of the mixture of the noctilucent powder prepared in the step (2) and molten paraffin at the stirring speed of 1000 revolutions/min, and stirring for 30min to prepare a suspension of paraffin coated noctilucent powder particles;
(4) Taking 100g of the suspension prepared in the step (3), cooling to 45 ℃, adding 1g of the particles prepared in the step (1), stirring at a speed of 10 revolutions per minute for 10 minutes, further reducing the temperature to normal temperature, continuing stirring for 20 minutes, filtering to remove the suspension, adding clear water, washing for 2 times to remove the residual suspension on the surfaces of the particles and non-adhered noctilucent material particles, and drying to obtain the particle covering material loaded with the noctilucent material coated microspheres.
Measured per 1cm 2 20 noctilucent particles are loaded on the particle surface of the substrate, the soil surface is covered with the particles of the embodiment with the thickness of 2cm, and after the sunlight irradiates for 5 hours in the daytime, obvious afterlight can be still observed on the particle surface within 8 hours at night.
Example 2
(1) The branches generated by pruning the urban road greening trees are crushed into particles with the size of 0.5-2 cm.
(2) 5 g of ethylene-vinyl acetate copolymer (EVA) was dissolved in 95 g of d-limonene to prepare a 5% ethylene-vinyl acetate copolymer solution. Then heating 100g of polyethylene wax with a melting point of 100 ℃ to 100 ℃, adding 10g of 5% plastic solution and 1g of strontium aluminate noctilucent powder with a granularity range of 100 mu m while stirring, and stirring at 100 ℃ for 30min at a rotating speed of 1000r/min to uniformly disperse noctilucent particles in the molten polyethylene wax;
(3) Mixing 1g of polyethylene glycol ether with 100g of calcium bromide aqueous solution with the density of 1.6g/mL at the temperature of 100 ℃, adding 20g of the mixture of the noctilucent powder prepared in the step (2) and the molten polyethylene wax into the mixture at the stirring speed of 5000r/min, and stirring for 60min to prepare a suspension of noctilucent powder particles wrapped by the molten polyethylene wax;
(4) Taking 100g of the suspension prepared in the step (3), cooling to 95 ℃, adding 10g of the particles prepared in the step (1), stirring at a speed of 50 revolutions per minute for 30 minutes, further reducing the temperature to normal temperature, continuing stirring for 30 minutes, filtering to remove the suspension, adding clear water, washing for 1-2 times to remove the residual suspension and non-adhered noctilucent material particles on the surfaces of the particles, and drying to obtain the particle covering material loaded with the noctilucent material coated microspheres.
Measured per 1cm 2 20 noctilucent particles are loaded on the particle surface of the substrate, the soil surface is covered with the particles of the embodiment with the thickness of 2cm, and after the sunlight irradiates for 7 hours in the daytime, the obvious afterlight can be still observed on the particle surface within 9 hours at night.
Example 3
(1) The branch waste generated by pruning the urban road greening trees is crushed into particles with the size of 0.5-2 cm.
(2) 1g of ethylene-vinyl acetate copolymer (EVA) plastic was dissolved in 99 g of ethyl acetate to prepare a 1% ethylene-vinyl acetate copolymer solution. Then 100g of Fischer-Tropsch wax with the melting point of 100 ℃ is heated to 100 ℃, 10g of 1 percent EVA solution and 1g of rare earth strontium aluminate noctilucent powder with the particle size of 10 mu m are added while stirring, and stirring is carried out for 30min at the speed of 500r/min at 100 ℃ to ensure that noctilucent particles are uniformly dispersed in the molten Fischer-Tropsch wax;
(3) Mixing 0.1g of alkylphenol ethoxylates with 100g of aqueous solution of magnesium bromide with the density of 1.3g/mL at the temperature of 100 ℃, adding 20g of the mixture of the noctilucent powder prepared in the step (2) and the molten wax into the mixture at the stirring speed of 1000 revolutions/min, and stirring the mixture for 60min to prepare suspension of the noctilucent powder particles wrapped by the molten Fischer-Tropsch wax;
(4) Taking 100g of the suspension prepared in the step (3), cooling to 95 ℃, adding 10g of the particles prepared in the step (1), stirring at a speed of 100 revolutions per minute for 10min, further reducing the temperature to normal temperature, continuing stirring for 30min, filtering to remove the suspension, adding clear water, washing for 2 times to remove the residual suspension on the surface of the particles and non-adhered noctilucent material particles, and drying to obtain the covered particles loaded with noctilucent material coated microspheres.
Measured per 1cm 2 The surface of the particles is evenly loaded with 20 noctilucent particles, the soil surface is covered with the particles of the embodiment with the thickness of 2cm, and after the sunlight irradiates for 6 hours in the daytime, the surface of the particles can still observe obvious afterlight within 9 hours at night.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (10)
1. The method for preparing the noctilucent soil covering material by utilizing the tree wastes is characterized by comprising the following steps of:
(1) Crushing wood or branch waste to obtain particles of wood or branch waste;
(2) Dissolving a low-crystallization transparent polymer by using an organic solvent to obtain a polymer solution, adding the polymer solution into molten wax, adding luminous material particles, and stirring to obtain a suspension A in which the luminous material particles are dispersed;
(3) Mixing a dispersing agent and an aqueous solution of salt, adding the suspension A obtained in the step (2), and stirring to form a suspension B;
(4) Adding the particles obtained in the step (1) into the suspension B prepared in the step (3), stirring, separating, washing and drying to obtain the soil covering particles with noctilucent function.
2. The method for preparing a noctilucent soil covering material by using tree wastes according to claim 1, wherein: the crushing in the step (1) is to crush wood or branch waste into particles with the size ranging from 0.5 cm to 2 cm.
3. The method for preparing a noctilucent soil covering material by using tree wastes according to claim 1, wherein:
the low-crystallization transparent polymer in the step (2) is at least one of polystyrene, butadiene-styrene diblock copolymer, butadiene-styrene triblock copolymer and ethylene-vinyl acetate copolymer;
the organic solvent in the step (2) is at least one of toluene, xylene, ethyl acetate, dichloroethane, dichloroethylene, d-limonene and dipentene;
the melting point of the wax in the step (2) is 50-100 ℃, and the wax comprises at least one of paraffin wax, polyethylene wax, fischer-Tropsch wax and polypropylene wax; the molten wax is a wax heated to a temperature above its melting point.
4. The method for preparing a noctilucent soil covering material by using tree wastes according to claim 1, wherein: the grain diameter range of the noctilucent material grains in the step (2) is 10-100 mu m; the luminous material is a light-accumulating luminous material and comprises at least one of sulfide/oxysulfide system, aluminate system and silicate system luminous material, preferably strontium aluminate or rare earth strontium aluminate.
5. The method for preparing a noctilucent soil covering material by using tree wastes according to claim 1, wherein:
the mass percentage of the low-crystallization transparent polymer in the polymer solution in the step (2) is 1-5%;
the mass ratio of the wax to the polymer solution to the noctilucent material particles in the step (2) is 100:1 to 10:0.1 to 1;
the stirring conditions in the step (2) are as follows: stirring at 50-100 deg.c and 500-1000 r/min for 30-60 min.
6. The method for preparing a noctilucent soil covering material by using tree wastes according to claim 1, wherein:
the dispersant in the step (3) comprises at least one of stearic acid, polyethylene glycol ether, alkylphenol ethoxylates and fatty alcohol ethoxylates;
the aqueous solution of the salt in the step (3) is one of sodium bromide, potassium bromide, magnesium bromide, calcium bromide, ammonium bromide and zinc bromide; the density of the aqueous salt solution is in the range of 1.3-1.6 g/mL.
7. The method for preparing a noctilucent soil covering material by using tree wastes according to claim 1, wherein: the mass ratio of the aqueous solution of the salt, the dispersing agent and the suspension A in the step (3) is 100:0.1 to 1:1 to 20.
8. The method for preparing a noctilucent soil covering material by using tree wastes according to claim 1, wherein: the temperature of the mixing in the step (3) is 50-100 ℃; the stirring rotating speed is 1000-5000 r/min; the stirring time is 30-60 min.
9. The method for preparing a noctilucent soil covering material by using tree wastes according to claim 1, wherein: the mass ratio of the particles to the suspension B in the step (4) is 1-10:100.
10. The method for preparing a noctilucent soil covering material by using tree wastes according to claim 1, wherein: the stirring in the step (4) is specifically as follows: the temperature is controlled to be 1-5 ℃ lower than the melting temperature of the wax during stirring, the temperature is reduced to normal temperature after stirring for 10-30 min at the speed of 10-100 r/min, and stirring is continued for 20-30 min; and (4) washing the particles for 1-2 times by using normal-temperature clean water.
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