CN1935728A - Naturally-degradable environmental-protection flowerpot and its manufacturing method - Google Patents

Naturally-degradable environmental-protection flowerpot and its manufacturing method Download PDF

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Publication number
CN1935728A
CN1935728A CNA2006100321173A CN200610032117A CN1935728A CN 1935728 A CN1935728 A CN 1935728A CN A2006100321173 A CNA2006100321173 A CN A2006100321173A CN 200610032117 A CN200610032117 A CN 200610032117A CN 1935728 A CN1935728 A CN 1935728A
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raw material
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product
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CN100441532C (en
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钱铁清
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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Abstract

The invention discloses a naturally degradableenvironmental-protection flowerpot, comprising compound A, compound B or compound C, where the filler utilization of the compound A is 40-70%, and they are treated cow dung, compound fertilizer, bamboo wool, paper wool, chaff powder and kaoline; the structural material and adhesive utilization of the compound A is 20-50%, and they are lowly dissociative urea aldehyde resin, polyglycol and starch; the supporting assistant utilization of the compound A is 10-40%, and they are liquid paraffin, amino resin, ceramic plasticizer, calcium stearate and toughness reinforcing agent, such as nano SiO2 or nano CaCO3. And its basic manufacturing method comprises a flow of: raw materials-mixing- stirring or kneading-moulding- product. And the invention is suitable to make various environmental- protection plant ornamental and cultivating flowpots.

Description

But the environmental-protection flowerpot of natural degradation and manufacture method thereof
Technical field
The present invention relates to the degradable flowerpot and make the method for this flowerpot, but especially a kind of environmental-protection flowerpot of natural degradation and manufacture method thereof.
Background technology
At present, make that material that flowerpot uses still mainly adopts as pottery, plastics, malthoid etc., in case all throw after flowerpot is discarded in outside of the city or be embedded in undergroundly, centuries even more than one thousand years all can not be degraded, these pottery sheets, ceramics, plastics, malthoid piece bring serious pollution for environment and soil.In recent years, though there is the degradable flowerpot to occur, only be in the exploratory stage at initial stage, its product is frangible, easily split, and the percentage of damage in the transportation has surpassed 50%.
In addition, Chinese patent Granted publication number is formed for " degradable environment-protecting starch-based material and the manufacture method " of CN1160401C discloses by following weight percent: starch 51-80%, modification auxiliary material 10-20%, plant sugar 6-12.5%, softening agent 1.3-6%, control agent 0.2-1%, polycaprolactone and polyhydroxy butyrate ester copolymer 2-8.5%, chitin chitosan 0.5-1% degrade; Its manufacture method is: (1) takes by weighing raw material; (2) carry out polyreaction blend modification by copolymerization; (3) with the cord wood parallel double-screw extruder carry out three grades mixing.This material is fit to make various disposable lunch-boxes and packing material etc.Its weak point is raw material must be carried out polyreaction blend modification by copolymerization, and used starch cost is higher and easily grow mould, influences work-ing life, and its complex process must have specific equipment, so cost does not reduce.
Summary of the invention
But the environmental-protection flowerpot that the purpose of this invention is to provide a kind of natural degradation, it not only has the sight of ceramic product but also have the security of degradation products and cultivation property, also have simultaneously and draw materials easily, can discharge fertilizer efficiency in long service life, degradation time automatic control, the disintegration efflorescence process and make plant nutrient and non-environmental-pollution.
But another object of the present invention provides a kind of manufacture method of environmental-protection flowerpot of natural degradation, and it is a kind of existing general-purpose equipment and simple manufacture method that does not need the specific equipment investment again of technology of making full use of.
For achieving the above object, but a kind of environmental-protection flowerpot of natural degradation, and it forms A composition, B composition or C composition by the composition of following weight percent: wherein
(1) filler loading 40-70%, they are:
A composition (weight part)
Handle cow dung 5-40 part
The fertile 0-4 part of compound
Bamboo suede 1-8 part
Paper suede 0-5 part
Husk or vegetable fibre 10-42 part
Kaolin 7-15 part
B composition (weight part)
Perlite 0-6 part
The fertile 0-40 part of compound
Husk or vegetable fibre 8-40 part
Kaolin 8-64 part
Bamboo suede 0-3.5 part
Paper suede 0-5 part
Titanium dioxide TiO 20-3 part
Handle cow dung 2-4 part
C composition (weight part)
Vegetable fibre or husk 5-58 part
Handle cow dung 10-40 part
Kaolin 5-30 part,
White oil 1-2 part
Calcium stearate 0-2 part
(2) structure material material and tackiness agent consumption 20-50%, they are:
A composition (weight part)
Low-free formaldehyde Precondensed UreaFormaldehyde Resin 20-28 part
Polyoxyethylene glycol 0-5 part
Starch 4-6 part
B composition (weight part)
Polyoxyethylene glycol 5-10 part
Aminoresin 0-2 part
Pottery softening agent 5-10 part
Starch 2-6 part
PVA (polyvinyl alcohol formal) 3-14.5 part
C composition (weight part)
Polypropylene 13-53 part
Regenerating polypropylene 0-10 part
Starch 0-6 part
(3) compounding aid consumption 2-40%, they are:
A composition (weight part)
Pottery softening agent 0-10 part
Aminoresin 1-6 part
Calcium stearate 0-3 part
White oil 0-2 part
B composition (weight part)
White oil 0.5-1.5 part
C composition (weight part)
Oxygenant 0-8 part
Antioxygen 0-8 part
Releasing agent 0.5-2 part
TM-10-2 part [antioxygen four (3.5-di-t-butyl-4 hydroxy phenyl) propionic acid quaternary amyl alcohol ester]
As further measure of the present invention, also add tinting material in the above-mentioned compounding aid, its amount ranges is 0-1%.Also add toughner nano level SiO in the above-mentioned B composition compounding aid 2, nano level CaCO 3, its amount ranges is 0-1.5%.
For realizing above-mentioned another purpose, but a kind of manufacture method of environmental-protection flowerpot of natural degradation is as follows:
(1) main technique flow process
Raw material-mixing-stirring or kneading-moulding-product
(2) main operational steps
1) with each raw material of the wherein composition in A composition, B composition or the C composition, pours into successively in stirrer or the mixer; 2) raw material is mixed; 3) compound is stirred or mediates; 4) will stir or kneaded material is added in the shaped device; 5) make product through mold pressing or roll extrusion.
As further measure of the present invention, but a kind of environmental-protection flowerpot A composition manufacture method of natural degradation is as follows:
(1) A composition process flow process
Raw material-mixing-stirring-mold pressing fast-product
(2) A composition operation steps
I) choose raw material; Ii) each raw material in the A composition is poured in the stirrer successively and mixed; Iii) restart stirrer, the stirrer rotating speed is 800-1500 time/minute, and churning time is 5-15 minute, and whipping temp is 40-65 ℃; Iv) the material through stirring is transferred in the mould with a certain amount of scoop, mould is closed again, and sends into press, and the press temperature is 130-150 ℃, and the press time is 1-2 minute; V) release, the demoulding get product.
As further measure of the present invention, but a kind of environmental-protection flowerpot B composition manufacture method of natural degradation is as follows:
(1) B composition process flow process
Raw material-mixing-refining mud-biscuit throwing-drying-product
(2) B composition operation steps
I) choose raw material; Ii) each raw material in the B composition is poured in the stirrer successively and mixed, and control moisture content gross weight maintenance dose is 10%-30%; Iii) restart stirrer, the stirrer rotating speed is 800-1500 time/minute, and churning time is the 5-10 branch; Iv) the material that stirs is joined in the soil kneader, vacuum refining mud, vacuum tightness is the 0.8-1.0 handkerchief; V), put into the blank rotating machine base with the rectangular cake of cutting of the right cylinder that transfers out in the soil kneader; Vi) dry, drying temperature is 100-120 ℃; The vii) demoulding, finishing, pouring film, product.
As further measure of the present invention, but a kind of environmental-protection flowerpot C composition manufacture method of natural degradation is as follows:
(1) C composition process flow process
Raw material-mixing-kneading-roll extrusion-mold pressing-product
(2) C composition operation steps
I) choose raw material; Ii) each raw material in the C composition is poured in the mixer successively, carried out just mixing, iii) restart mixer, the mixer rotating speed is 800-1000 time/minute, mixes 5-10 minute; Iv) the material that mixes is joined in the kneader, mediated through 5-8 minute; V) more kneaded material is added in the roller press, the roll extrusion time is 2-4 minute, rolling speed be 2-3 rice/minute, vi) that roll extrusion is good a certain amount of material is put into mould, puts into press again, press pressure is the 40-80 handkerchief, and press temperature is 120-140 ℃, and the press time is 1-2 minute; Vii) release, the demoulding get product.
As further measure of the present invention, the surface of described A composition product, B composition product or C composition product all can be coated with last layer and drench film, realizes the inside and outside nursing of its product.
The present invention adopts multiple composition to make packing material, structured material and tackiness agent, and according to the condition of using different in addition composite structured material and tackiness agent respectively.It has overcome the limitation of existing structure material and the single use existence of tackiness agent.Therefore, compare with the prior art solution and have following characteristics:
1. added the degradation rate conditioning agent in the composition of the present invention: as biodegradable starch, paper suede etc.; Also can add the oxygenant that resin is used, calcium peroxide etc. and TM-1[antioxygen four (3.5-di-t-butyl-4 hydroxy phenyl) propionic acid quaternary amyl alcohol ester]; Drench film, drench film liquid and aminoresin etc., can effectively delay the product degradation rate as (PB-03) non-toxic degradable.
2. added aldehyde capturing agent in the composition of the present invention, as kaolin, starch etc., to absorb the free formaldehyde that urine aldehyde glue discharges.
3. added toughner in the composition of the present invention, no matter be with urine aldehyde glue, polyoxyethylene glycol glue, still goods made from polypropylene all easily crisply easily split; The toughner that the present invention adds has aminoresin, paper suede, bamboo suede, vegetable fibre, nano level silicon-dioxide and nano level lime carbonate etc.
4. added fertilizer synergist in the composition of the present invention,, in the flowerpot degradation process, can constantly discharge flowers and needed nutrient of plant-growth and fertilizer efficiency as compound fertilizer etc.
5. added the pouring film in the composition of the present invention, as PB-03 coating liquid and esters of acrylic acid coating liquid etc., as the nursing of flowerpot surfaces externally and internally.
6. added softening agent in the composition of the present invention,, increased the plasticity-in the course of processing as ceramic softening agent etc.
7. added releasing agent in the composition of the present invention, as adding white oil, calcium stearate etc. make product be easy to the demoulding and increase demoulding efficiency.
8. added tinting material in the composition of the present invention,,, had sight thereby reach to increase the color of goods as natural or synthetic water-soluble dye.
9. added the cow dung of handling through sterilization, deodorizing, neutralization, drying etc. in the composition of the present invention as main filler, solved cow dung in the cowboying industry environment is caused the difficult problem of severe contamination, the evil of change cow dung is the affluent resources of flowerpot raw materials for production.
10. manufacturing process of the present invention is simple, need not specific equipment, so cost is also cheaper.
It is fit to make various environmental-friendly plant sights, cultivation property flowerpot.
Description of drawings
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
But Fig. 1 is the environmental-protection flowerpot A composition material composition of natural degradation forms schema.
But Fig. 2 joins table in fact for each embodiment of environmental-protection flowerpot A composition of natural degradation.
But Fig. 3 is the environmental-protection flowerpot B composition material composition of natural degradation forms schema.
But Fig. 4 joins table in fact for each embodiment of environmental-protection flowerpot B composition of natural degradation.
But Fig. 5 is the environmental-protection flowerpot C composition material composition of natural degradation forms schema.
But Fig. 6 joins table in fact for each embodiment of environmental-protection flowerpot C composition of natural degradation.
Embodiment
But the environmental-protection flowerpot of a kind of natural degradation of the present invention, it forms A composition, B composition or C composition by the composition of following weight percent: wherein
(1) filler loading-composite material: 40-70%;
(2) structure material material and tackiness agent consumption-gum blend or structure material: 20-50%;
(3) compounding aid consumption: 2-40%;
(1) but the environmental-protection flowerpot A composition material composition of natural degradation is formed flow process as shown in Figure 1.
(2) but each embodiment of environmental-protection flowerpot A composition of natural degradation joins table as shown in Figure 2 in fact.
(3) but the environmental-protection flowerpot A composition manufacture method of natural degradation.
(1) A composition process flow process
Raw material-mixing-quick (the vacuumizing)-mold pressing-product that stirs
(2) A composition operation steps
I) choose the A composition and join various raw materials in the table in fact, except that low free urine aldehyde glue paste, preface is poured in the stirrer successively, adds the low-free formaldehyde glue paste at last, ii) starts stirrer and carries out just mixed; Iii) restart stirrer, the stirrer rotating speed is 1500 times/minute, churning time 10 minutes, 35 ℃ of whipping temps; Iv) the material through stirring is transferred in the mould with a certain amount of scoop, mould is closed again, and sends into press, 140 ℃ of press temperature, and the press time is 2 minutes; V) release, the demoulding get product.
In order to prolong product work-ing life, the surface of products obtained therefrom is coated with the nontoxic degraded coating liquid of last layer PB-03 realizes nursing inside and outside the product.
(1) but the environmental-protection flowerpot B composition material composition of natural degradation is formed flow process as shown in Figure 3.
(2) but each embodiment of environmental-protection flowerpot B composition of natural degradation joins table as shown in Figure 4 in fact.
(3) but the environmental-protection flowerpot B composition manufacture method of natural degradation.
(1) B composition process flow process
Raw material-mixing-refining mud (vacuumizing)-biscuit throwing-drying-product
(2) B composition operation steps
I) choose raw material; Ii) each raw material in the B composition is poured in the stirrer successively and mixed, and control moisture content gross weight maintenance dose is 25%; Iii) restart stirrer, establish the stirrer rotating speed 1000 times/minute, churning time 8 minutes; Iv) the material that stirs is joined in the soil kneader vacuum refining mud, vacuum tightness 1.0 handkerchiefs; V) put into the blank rotating machine base after cutting cake with the right cylinder that transfers out in the soil kneader is rectangular, can produce 16 flowerpot bases in 1 minute; Vi) dry, 120 ℃ of drying temperatures; The vii) demoulding, finishing, pouring film, product.
Above-mentioned pouring film is the product after the demoulding, the finishing to be carried out top coat handle, and promptly coats the nontoxic degraded coating liquid of PB-03 on the surface of product, prolongs product work-ing life.This drenches the film step also can be single-row according to customer requirements.
(1) but the environmental-protection flowerpot C composition material composition of natural degradation is formed flow process as shown in Figure 5.
(2) but each embodiment of environmental-protection flowerpot C composition of natural degradation joins table as shown in Figure 6 in fact.
(3) but the environmental-protection flowerpot C composition manufacture method of natural degradation.
(1) C composition process flow process
Raw material-mixing-kneading-roll extrusion-mold pressing-product
(2) C composition operation steps
I) choose raw material; Ii) each raw material in the C composition is poured in the mixer successively, carried out just mixing, iii) restart mixer, the mixer rotating speed is 1000 times/minute, mixes 9 minutes; Jv) material that mixes is joined in the kneader, mediated through 6 minutes; V) more kneaded material is added in the roller press, the roll extrusion time is 3 minutes, and rolling speed is 3 meters/minute, and vi) that roll extrusion is good a certain amount of material is put into mould, puts into press again, and press pressure is 60 handkerchiefs, and press temperature is 130 ℃, 1 minute press time; Vii) release, the demoulding get product.
In order to prolong product work-ing life, the surface of products obtained therefrom is coated with last layer drenches film liquid, realize the inside and outside nursing of product.
(4) but the environmental-protection flowerpot C composition structured material of natural degradation.
But the environmental-protection flowerpot C composition structured material of natural degradation is mainly acrylic resin, and its structure is as follows:
Molecular formula:
In polypropylene molecular chain
Figure A20061003211700121
In, many tertiary carbon atoms are arranged, the hydrogen atom on its chain easily by airborne oxygen and ozone oxidation, becomes H 2O; This kind moisture content is volatilized again and lose in atmosphere, because the losing of hydrogen atom, thereby molecular chain is constantly ruptured, and that is to say that it has degraded.
If add oxygenant in the base-material of producing, the irradiation of biodegradation agent and UV-light can be quickened its degraded; Otherwise add antioxygen and then be difficult for degraded, utilize this characteristic, can be controlled its degradation rate.
Polypropylene is nontoxic, and excellent machining performance again can be high temperature resistant, is the available ideal material of degraded flowerpot.
Below only be preferred embodiment of the present invention, according to above-mentioned design of the present invention, those skilled in the art also can make various modifications and conversion to this.For example, the adjustment of the selecting for use of various raw material consumptions, properties-correcting agent, processing parameter, working method etc. in the structured material, adjustment conversion that cow dung is handled or the like.Yet similar this conversion and modification all belong to essence of the present invention.

Claims (9)

  1. But 1, a kind of environmental-protection flowerpot of natural degradation is characterized in that it forms A composition, B composition or C composition by the composition of following weight percent: wherein
    (1) filler loading 40-70%, they are:
    A composition (weight part)
    Handle cow dung 5-40 part
    The fertile 0-4 part of compound
    Bamboo suede 1-8 part
    Paper suede 0-5 part
    Husk or vegetable fibre 10-42 part
    Kaolin 7-15 part
    B composition (weight part)
    Perlite 0-6 part
    The fertile 0-40 part of compound
    Husk or vegetable fibre 8-40 part
    Kaolin 8-64 part
    Bamboo suede 0-3.5 part
    Paper suede 0-5 part
    Titanium dioxide TiO 20-3 part
    Handle cow dung 2-4 part
    C composition (weight part)
    Vegetable fibre or husk 5-58 part
    Handle cow dung 10-40 part
    Kaolin 5-30 part,
    White oil 1-2 part
    Calcium stearate 0-2 part
    (2) structure material material and tackiness agent consumption 20-50%, they are:
    A composition (weight part)
    Low-free formaldehyde Precondensed UreaFormaldehyde Resin 20-28 part
    Polyoxyethylene glycol 0-5 part
    Starch 4-6 part
    B composition (weight part)
    Polyoxyethylene glycol 5-10 part
    Aminoresin 0-2 part
    Pottery softening agent 5-10 part
    Starch 2-6 part
    PVA3-14.5 part
    C composition (weight part)
    Polypropylene 13-53 part
    Regenerating polypropylene 0-10 part
    Starch 0-6 part
    (3) compounding aid consumption 2-40%, they are:
    A composition (weight part)
    Pottery softening agent 0-10 part
    Aminoresin 1-6 part
    Calcium stearate 0-3 part
    White oil 0-2 part
    B composition (weight part)
    White oil 0.5-1.5 part
    C composition (weight part)
    Oxygenant 0-8 part
    Antioxygen 0-8 part
    Releasing agent 0.5-2 part
    TM-1 0-2 part
  2. But 2, the environmental-protection flowerpot of a kind of natural degradation according to claim 1 is characterized in that also adding in the above-mentioned compounding aid tinting material, and its amount ranges is 0-1%.
  3. But 3, the environmental-protection flowerpot of a kind of natural degradation according to claim 1 is characterized in that also adding toughner nano level SiO in the above-mentioned B composition compounding aid 2, nano level CaCO 3, its amount ranges is 0-1.5%.
  4. But 4, a kind of manufacture method of environmental-protection flowerpot of natural degradation is characterized in that:
    (1) main technique flow process
    Raw material-mixing-stirring or kneading-moulding-product
    (2) main operational steps
    1) with each raw material of the wherein composition in A composition, B composition or the C composition, pours into successively in stirrer or the mixer; 2) raw material is mixed; 3) compound is stirred or mediates; 4) will stir or kneaded material is added in the shaped device; 5) make product through mold pressing or roll extrusion.
  5. But 5, the manufacture method of the environmental-protection flowerpot of a kind of natural degradation according to claim 4 is characterized in that:
    (1) A composition process flow process
    Raw material-mixing-stirring-mold pressing fast-product
    (2) A composition operation steps
    I) choose raw material; Ii) each raw material in the A composition is poured in the stirrer successively and mixed; Iii) restart stirrer, the stirrer rotating speed is 800-1500 time/minute, and churning time is 5-15 minute, and whipping temp is 40-65 ℃; Iv) the material through stirring is transferred in the mould with a certain amount of scoop, mould is closed again, and sends into press, and the press temperature is 130-150 ℃, and the press time is 1-2 minute; V) release, the demoulding get product.
  6. But 6, the manufacture method of the environmental-protection flowerpot of a kind of natural degradation according to claim 4 is characterized in that:
    (1) B composition process flow process
    Raw material-mixing-refining mud-biscuit throwing-drying-product
    (2) B composition operation steps
    I) choose raw material; Ii) each raw material in the B composition is poured in the stirrer successively and mixed, and control moisture content gross weight maintenance dose; Iii) restart stirrer, the stirrer rotating speed is 800-1500 time/minute, and churning time is the 5-10 branch; Iv) the material that stirs is joined in the soil kneader, vacuum refining mud, vacuum tightness is the 0.8-1.0 handkerchief; V), put into the blank rotating machine base with the rectangular cake of cutting of the right cylinder that transfers out in the soil kneader; Vi) dry, drying temperature is 100-120 ℃; The vii) demoulding, finishing, pouring film, product.
  7. But 7, the manufacture method of the environmental-protection flowerpot of a kind of natural degradation according to claim 6 is characterized in that: the B composition operation steps ii) moisture content gross weight maintenance dose in the step is 10%-30%.
  8. But 8, the manufacture method of the environmental-protection flowerpot of a kind of natural degradation according to claim 4 is characterized in that:
    (1) C composition process flow process
    Raw material-mixing-kneading-roll extrusion-mold pressing-product
    (2) C composition operation steps
    I) choose raw material; Ii) each raw material in the C composition is poured in the mixer successively, carried out just mixing, iii) restart mixer, the mixer rotating speed is 800-1000 time/minute, mixes 5-10 minute; Iv) the material that mixes is joined in the kneader, mediated through 5-8 minute; V) more kneaded material is added in the roller press, the roll extrusion time is 2-4 minute, rolling speed be 2-3 rice/minute, vi) that roll extrusion is good a certain amount of material is put into mould, puts into press again, press pressure is the 40-80 handkerchief, and press temperature is 120-140 ℃, and the press time is 1-2 minute; Vii) release, the demoulding get product.
  9. But 9, according to the manufacture method of the environmental-protection flowerpot of claim 5,6 or 8 described a kind of natural degradations, the surface that it is characterized in that described product all can be coated with last layer and drench film.
CNB2006100321173A 2006-08-21 2006-08-21 Naturally-degradable environmental-protection flowerpot and its manufacturing method Expired - Fee Related CN100441532C (en)

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CN103088719A (en) * 2011-11-01 2013-05-08 东西有限公司 Utensil forming device and utensil forming method
CN103088719B (en) * 2011-11-01 2016-08-10 东西有限公司 Implements shaped device
TWI487479B (en) * 2013-01-14 2015-06-11 Carol Young Corp Organic composite structure and manufacturing method thereof
CN106069278A (en) * 2016-06-22 2016-11-09 重庆工商大学 Disposable degradable is from nutrition lightweight flowerpot and preparation method thereof
CN106069278B (en) * 2016-06-22 2019-05-21 重庆工商大学 Disposable degradable is from nutrition lightweight flowerpot and preparation method thereof
CN106718286A (en) * 2017-01-05 2017-05-31 潍坊友容实业有限公司 Plant cultivation basin and preparation method thereof
CN113039985A (en) * 2021-03-05 2021-06-29 南京市江宁区农业农村局 Method for planting cinnamomum camphora seedlings
CN113261448A (en) * 2021-05-21 2021-08-17 江西省林业科学院 Tea-oil tree fruit shell degradable seedling culture container and preparation method thereof
CN114988847A (en) * 2022-06-28 2022-09-02 福建省德化县全丰陶瓷有限公司 Easily degradable ceramic material and production method thereof

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