CN106977970A - A kind of method for preparing seedling-cultivation plate using modified biogas residue fiber - Google Patents
A kind of method for preparing seedling-cultivation plate using modified biogas residue fiber Download PDFInfo
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- C—CHEMISTRY; METALLURGY
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
The invention discloses a kind of method that modified biogas residue fiber prepares seedling-cultivation plate; acetylation pretreatment will be carried out to biogas residue fiber first; then compression molding is recycled to prepare modified biogas residue fiber seedling-cultivation plate by high speed compounding procedure with biomass binder, reinforcer, curing agent and releasing agent；The content of cellulose of the biogas residue obtained after anaerobic fermentation, lignin and crystal structure is higher, is acted on beneficial to acetylated modification, can effectively improve the mobility of biogas residue fiber, and it is low to overcome traditional stalk fibre acetylation grafting rate, the higher defect of accessory substance；Containing nutrients such as higher nitrogen, phosphorus, potassium, calcium, magnesium, silicon in another aspect biogas residue fiber, the biogas residue fiber seedling-cultivation plate after discarding is easy to be decomposed by the microorganisms, and the product after degraded can be used as fertilizer to promote growth of seedling, environmental protection；Compared with plastic rice seedling-raising disk, the biogas residue fiber seedling-cultivation plate product low energy consumption that the present invention is provided, environmental protection, gas permeability is high, degradable, it is easy to promote.
Description
Technical field
The present invention relates to the preparation of seedling-cultivation plate and applied technical field, particularly a kind of prepared using modified biogas residue fiber is educated
The method of seedling disk.
Background technology
Traditional seedling-cultivation plate mainly uses thermoplastic such as polyethylene or polyvinyl chloride etc. for raw material, polyethylene or poly-
Vinyl chloride etc. belongs to non-degradable material, it is discarded after seedling-cultivation plate to deposit degradation cycle under field conditions (factors) longer or can only part
Degraded, while the relic crushed after seedling-cultivation plate aging is stayed in soil, is not easily decomposed, causes soil to deteriorate, if falling into the water,
Polluted-water, influences water quality, if burning disposal, be also easy to produce unnecessary kind of toxic gas, pollutes air, thus it is discarded after seedling
Disk easily causes serious " white pollution ", in environmental problem increasingly serious today, utilizes environment-friendly biodegradable material
Material replaces non-degradable material, is the emphasis material of future development.
Applicant's early stage utilizes powdered rice hulls and modified urea-formaldehyde resin compression molded material stalk pot（Referring to " powdered rice hulls/change
The mechanical property of property Lauxite compression molded material ", EI, 2014）, by the way that the document discloses rice hull cellulose
Improve the mechanical property that moulding material is molded basin alms bowl with modified urea-formaldehyde resin, the basin alms bowl obtained has certain biodegradation
Property, environmental protection can substitute conventional plastic container and use.However, found during applicant's follow-up study, it is fine using rice husk
When dimension prepares moulding material, because stalk fibre is a kind of heterogeneous, anisotropic natural macromolecular material, mainly by fiber
The polymer such as element, hemicellulose and lignin composition, in a mold, it is necessary to larger during compression forming production container for plant growth
Briquetting pressure could be molded, and Flow of Goods and Materials performance is poor, cause moulding material interface fusion poor, be glued interface with the time
Passage can be peeled off, and product fragility is larger, poor ductility, the utilization of serious limitation stem fibric material.
At the same time, with the increase of the methane-generating pit number of users using agricultural crop straw as raw material, a large amount of stackings of biogas residue
Security to Ecological Environment and ecological environment of soil threatens.How efficient process biogas residue, as limitation China natural pond
One all-round developing of technology barrier of gas cause.Patent of invention CN102334442A discloses a kind of straw biogas residue nutrition pot, main
To be obtained using biogas residue and binder by compressing；Patent of invention CN102440158A announce a kind of biogas residue nutritive cube and its
Preparation method and application, the raw material composition of the biogas residue nutritive cube is fresh biogas residue, clay, cotton seed hulls, wheat or maize straw, is passed through
Natural drying 2-8 days or drying after blocking shape, the demoulding are manually or mechanically pressed, biogas residue nutritive cube is produced.But it is due to crops
Stalk fibre is after anaerobic fermentation, and most hemicelluloses and cellulose are all degraded or decomposed by anaerobic bacteria, cause natural pond
Content of lignin increase in slag, and lignin is that a kind of natural close-burning have oxo phenylpropanol or derivatives thereof construction unit
Armaticity high polymer, with higher intensity and specific modulus, so as to cause to prepare nutritive cube or other forming materials using biogas residue
The problem of poor in processability, poor fluidity are shown during material.
Biogas residue fiber mobility is improved at present mainly uses physical modification, bio-modification and chemical modification method.Wherein, thing
Reason method is relatively easy, but effect is poor, cost is high；Biological method environmental protection, degrades and modified time-consuming longer, it is difficult to scale profit
With；Using more polluting small, environmentally friendly modifying agent has preferable development prospect to improve biogas residue fiber mobility, and can
Effectively improving the method for material utilization approach of biogas residue fiber, there is not been reported.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of method that modified biogas residue fiber prepares seedling-cultivation plate, to subtract
The use of few non-degradable plastic rice seedling-raising disk, slows down oil crisis；The remnants that innoxious and materialized processing biogas engineering is brought
Thing biogas residue, and meet the performance requirement and use requirement of specific occasion material.
The invention provides a kind of method that modified biogas residue fiber prepares seedling-cultivation plate, what the present invention was realized in：
A kind of method for preparing seedling-cultivation plate using modified biogas residue fiber, is comprised the following steps that：
S1：The acetylation pretreatment of biogas residue fiber：
Dried biogas residue fiber is crushed to 20-80 mesh, is immersed in the reactor containing toluene solvant, acetylation examination is added
Catalyst is added after agent, uniform stirring, according to 5 DEG C/min of heating rate from normal temperature to 90 DEG C ~ 140 DEG C, 0.5h ~ 6h, drop is reacted
Temperature is to 30 DEG C ~ 40 DEG C, and discharging is cleaned material to neutrality with absolute ethyl alcohol and deionized water, is placed in air dry oven repeatedly,
Over dry is dried under the conditions of 105 ± 2 DEG C, acetylated modification biogas residue fiber is obtained.
Wherein, the mass volume ratio (g/mL) of biogas residue fiber and acetylation reagent is 1:2~6；The addition of catalyst is natural pond
The 0.5 ~ 4% of slag fiber quality；The mass volume ratio (g/mL) of biogas residue fiber and toluene solvant is 1:2.5~5.
S2：The preparation of biogas residue fiber seedling-cultivation plate：
By acetylated modification biogas residue fiber, biomass binder, reinforcer, curing agent and releasing agent in 45-65 DEG C of high speed
In kneading machine, 25-35min is kneaded with 300-450rpm rotating speed, discharging is subsequently placed in mould pressing die, hot-forming, i.e.,
Obtain biogas residue fiber seedling-cultivation plate；
Wherein, the mass ratio of acetylated modification biogas residue fiber and biomass binder is 1：0.5 ~ 3, reinforcer addition is second
The 3 ~ 8% of acylation modification biogas residue fiber quality, curing agent addition is the 2 ~ 4% of acetylated modification biogas residue fiber quality, releasing agent
Addition is the 1 ~ 5% of acetylated modification biogas residue fiber quality.
Further, it is of the present invention to be prepared using modified biogas residue fiber in the method S1 steps of seedling-cultivation plate, catalyst for pair
One kind in benzoic acid or para Toluic Acid's sulfuric acid mixture；
Para Toluic Acid's sulfuric acid mixture is para Toluic Acid and sulfuric acid in mass ratio 3：Obtained after 1 mixing.
Further, it is of the present invention to be prepared using modified biogas residue fiber in the method S1 steps of seedling-cultivation plate, acetylation reagent
For the one or more in chloroacetic chloride, acetic anhydride or glacial acetic acid.
Further, it is of the present invention to be prepared using modified biogas residue fiber in the method S2 steps of seedling-cultivation plate, described biology
Matter binder is urea formaldehyde prepolymers modified soy-bean protein binder；The reinforcer is nano-calcium carbonate, barium sulfate, nanometer
One or more in silica, talcum powder, titanium dioxide or antimony oxide；The curing agent is ammonium chloride or Adauto Luo product
In one or more；The releasing agent is one kind in atoleine, microcrystalline wax or Tissuemat E.
Further, it is of the present invention to be prepared using modified biogas residue fiber in the method S2 steps of seedling-cultivation plate, it is described to be hot pressed into
Type refers to：Hot pressing temperature is 100 ~ 120 DEG C, hot pressing pressure 10-30MPa, 40 ~ 70s of hot pressing time.
Further, it is of the present invention to be prepared using modified biogas residue fiber in the method S2 steps of seedling-cultivation plate, during the hot pressing
Between 40 ~ 70s be to include：1st 8 ~ 15s of pressurize；1st 6 ~ 12s of release；2nd 12 ~ 16s of pressurize；2nd 8 ~ 15s of release；
3rd 6 ~ 12s of pressurize.
Biogas residue fiber of the present invention refers to using debirs such as the feces of livestock and poultry such as pig manure, chicken manure, agricultural crop straws as original
Fiber of the moisture content in 10-15% after material, the big-and-middle-sized biogas engineering biogas residue normally run, natural drying.
The biogas residue fiber seedling-cultivation plate that the present invention is obtained can be used for botanical seedling culturing, irrigate biogas residue fiber seedling-cultivation plate before nursery
Water, is put into slowly drained soil or fine sand in the planting hole of biogas residue fiber seedling-cultivation plate, is put into seed, then sprinkles the slowly drained soil
Or fine sand, other are routinely carried out by nursery.
With the fast development of biogas engineering, the residue resource after biogas fermentation is increasingly enriched.The present invention with pig manure,
The feces of livestock and poultry such as chicken manure, the debirs such as agricultural crop straw are raw material, and the big-and-middle-sized biogas engineering biogas residue normally run is main body
Raw material, using environment-friendly type acetylation reagent as modifying agent, acetylation process is carried out to biogas residue, is improved it and is flowed plasticity, acetyl is made
Change modified biogas residue fiber, and then use biomass binder and other auxiliary agents, the dry-press process such as knead, be molded by high-speed stirred
The special container product such as seedling-cultivation plate is made in technical process, the requirement of " intensity " when both can ensure to use, and having again after discarding " can drop
The series of products of solution property ".
Compared with prior art, the beneficial effects of the present invention are：
1）With the biogas residue fiber after anaerobic fermentation as reinforcing material, due to rice straw it is fermented after, hemicellulose and table
Face gum part is removed, and the increase of content of lignin makes acetic anhydride fully to be contacted with biogas residue fiber in the reaction, acetylation water
Flat to improve, it is low to overcome traditional stalk fibre acetylation grafting rate, the higher defect of accessory substance.
2）Biogas residue fiber is modified using chemical method, while modified effect is improved, making for chemicals is reduced
With, and by the energy of biogas residue fiber and it is materialized be combined, rice straw is reached maximum comprehensive utilization ratio.In addition, second
There is good feasibility in acylated toxicity and pollution very little, operation；Make catalyst with p-methyl benzenesulfonic acid to substitute or part replacement
Sulfuric acid, because sulfuric acid as catalyst has oxidisability, easily makes straw-carbonized, and p-methyl benzenesulfonic acid is strong organic acid, is being had
Dispersiveness preferably, and without oxidisability, prevents stalk to be carbonized in the reaction in machine solvent.
3）By the use of biogas residue fiber as the reinforcing material of seedling-cultivation plate, the cellulose of the higher lignin of content and crystal structure
Higher mechanical property can be provided for seedling-cultivation plate, it is ensured that the product of compression forming has been ensured in " intensity "；In addition, using life
Material binder has ensured " degradable " performance requirement for preparing product again as the adhesive of seedling-cultivation plate；Moreover, biogas residue fiber
In containing the nutrient such as higher nitrogen, phosphorus, potassium, calcium, magnesium, silicon, it is discarded after biogas residue fiber seedling-cultivation plate be easy to microorganism decomposition,
Product after degraded can promote growth of seedling as fertilizer.Compared with plastic rice seedling-raising disk, the natural pond prepared using this inventive technique
Slag fiber seedling-cultivation plate product low energy consumption, environmental protection, gas permeability is high, degradable, it is easy to promote.
Brief description of the drawings
Fig. 1 is the modified biogas residue fiber seedling-cultivation plate fabrication processing figure of this hair.
Fig. 2 is the rheology of products obtained therefrom of embodiment of the present invention A, B, C and the original biogas residue fiber sample of non-acetylation process
Performance test results schematic diagram.
Fig. 3 is test sample degradation rate curve synoptic diagram of the seedling-cultivation plate of embodiment acquisition after 18 months.
Fig. 4 is the cucumber seedling-raising condition diagram of embodiment 6.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Specific embodiment is closed, the present invention is expanded on further.It should be appreciated that specific embodiment discussed below is only to explain this hair
It is bright, it is not limitation of the present invention.
Biogas residue fiber is originated in following embodiments：Be derived from Jiangsu biogas engineering biogas residue, its using pig manure and wheat stalk as
Raw material, normal operation 45d big-and-middle-sized biogas engineering biogas residue, moisture content 12-14%.
Embodiment 1
S1：The acetylation pretreatment of biogas residue fiber
Biogas residue fiber natural wind dry doubling is crushed to 20 mesh, 200g biogas residue fibers is weighed and is put into containing the anti-of 1000ml toluene solvants
Answer in kettle, add after chloroacetic chloride 1200ml, uniform stirring, add para Toluic Acid 8g, risen according to 5 DEG C/min of heating rate from 25 DEG C
Temperature reacts 6h to 90 DEG C, is cooled to 30 DEG C ~ 40 DEG C, discharging cleans material to neutrality repeatedly with absolute ethyl alcohol and deionized water,
It is placed in air dry oven, over dry is dried under the conditions of 105 ± 2 DEG C, obtain acetylated modification biogas residue fiber A, calculating is grafted
Rate is 58.39%.
S2：The preparation of biogas residue fiber seedling-cultivation plate
By 1000g acetylated modification biogas residue fiber A, 500g urea formaldehyde prepolymers modified soy-bean protein binder（Referring to document
" synthesis of soybean separation proteolysis thing modified cyanurotriamide Lauxite and sign ", yellow red English etc., chemistry of forest product and work
Industry, 2013,33（3）：85-90）, 30g nano-calcium carbonates（Reinforcer）, 20g ammonium chlorides（Curing agent）With 10g Tissuemat Es
（Releasing agent）In 45 DEG C of high speed mixing smelting machine, 25min is kneaded with 300rpm rotating speed, after discharging, is placed in mould pressing die,
Under the conditions of 100 DEG C, hot pressing pressure are 10MPa, hot pressing 40s（Including the 1st pressurize 8s；1st release 6s；2nd pressurize
12s；2nd release 8s；3rd pressurize 6s）, obtain biogas residue fiber seedling-cultivation plate AT.
In specific implementation process, biogas residue fiber can also be derived from the feces of livestock and poultry such as pig manure, chicken manure, agricultural crop straw such as
The debirs such as rice straw are raw material, the big-and-middle-sized biogas engineering biogas residue normally run, and moisture content is in 10- after natural drying
Fiber between 15%, can all realize the purpose of invention.
In specific implementation process, the mass volume ratio (g/mL) of biogas residue fiber and acetylation reagent is 1:2~6；Catalyst
Addition be biogas residue fiber quality 0.5 ~ 4%；The mass volume ratio (g/mL) of biogas residue fiber and toluene solvant is 1:2.5~5.
The mass ratio of acetylated modification biogas residue fiber and biomass binder is 1：0.5 ~ 3, reinforcer addition is acetylated modification
The 3 ~ 8% of biogas residue fiber quality, curing agent addition is the 2 ~ 4% of acetylated modification biogas residue fiber quality, and releasing agent addition is
The 1 ~ 5% of acetylated modification biogas residue fiber quality；In above-mentioned interval range, the purpose of invention can be achieved.
Embodiment 2
S1：The acetylation pretreatment of biogas residue fiber
By biogas residue fiber（Be the same as Example 1）Dry and be crushed to 80 mesh, weigh 400g biogas residue fibers and add and contain 1000ml toluene
In the reactor of solvent, add after acetic anhydride 800ml, uniform stirring, para Toluic Acid's 1.5g and 0.5g sulfuric acid is added, according to heating
5 DEG C/min of speed is warming up to 140 DEG C from 25 DEG C, reacts 0.5h, is cooled to 30 DEG C ~ 40 DEG C, discharging, with absolute ethyl alcohol and deionization
Water cleans material to neutrality repeatedly, is placed in air dry oven, and over dry is dried under the conditions of 105 ± 2 DEG C, obtains acetylated modification natural pond
Slag fiber B, it is 36.65% that calculating, which obtains grafting rate,.
S2：The preparation of biogas residue fiber seedling-cultivation plate
By 1000g acetylated modification biogas residue fiber B, 3000g urea formaldehyde prepolymers modified soy-bean protein binder, 80g nanometers
Calcium carbonate（Reinforcer）, 40g ammonium chlorides（Curing agent）With 50g microcrystalline waxes（Releasing agent）In 65 DEG C of high speed mixing smelting machine,
35min is kneaded with 450rpm rotating speed, after discharging, is placed in mould pressing die, is 25MPa conditions in 120 DEG C, hot pressing pressure
Under, hot pressing 60s（Including the 1st pressurize 15s；1st release 12s；2nd pressurize 16s；2nd release 15s；3rd pressurize
12s）, obtain biogas residue fiber seedling-cultivation plate BT.
Reinforcer can also select nano-calcium carbonate, barium sulfate, nano silicon, talcum in specific implementation process
One or more compoundings in powder, titanium dioxide or antimony oxide；Curing agent can also be in selective chlorination ammonium or Adauto Luo product
One or two；Releasing agent can select one kind in atoleine, microcrystalline wax or Tissuemat E, and the present invention can be achieved
Purpose.
Embodiment 3
S1：The acetylation pretreatment of biogas residue fiber
By biogas residue fiber（Be the same as Example 1）Dry and be crushed to 40 mesh, weigh 300g biogas residue fibers and add and contain 1000ml toluene
In the reactor of solvent, add after chloroacetic chloride 900ml, uniform stirring, para Toluic Acid 6g is added, according to 5 DEG C/min of heating rate
Be warming up to 120 DEG C from 25 DEG C, react 3h, be cooled to 30 DEG C ~ 40 DEG C, discharging, cleaned repeatedly with absolute ethyl alcohol and deionized water to
Neutrality, is placed in air dry oven, and over dry is dried under the conditions of 105 ± 2 DEG C, obtains acetylated modification biogas residue fiber C, and calculating is obtained
Grafting rate is 72.77%.
S2：The preparation of biogas residue fiber seedling-cultivation plate
By 1000g acetylated modification biogas residue fiber C, 1000g urea formaldehyde prepolymers modified soy-bean protein binder, 50g titanium whites
Powder, 30g Adauto Luo products and 35g atoleines knead 30min, discharging in 55 DEG C of high speed mixing smelting machine with 380rpm rotating speed
Afterwards, it is placed in mould pressing die, under the conditions of 110 DEG C, hot pressing pressure are 18MPa, hot pressing 50s（Including the 1st pressurize 10s；The
1 release 8s；2nd pressurize 14s；2nd release 10s；3rd pressurize 8s）, obtain biogas residue fiber seedling-cultivation plate CT.
Embodiment 4
Acetylated modification biogas residue fiber A, B, C that S1 steps in embodiment 1-3 are obtained respectively and the natural pond without acetylation process
Slag fiber is placed in 105 ± 2 DEG C of air dry oven and is dried to after over dry, and the sample for weighing certain mass carries out torsional analysis, inspection
Its mobility variations rule is surveyed, the rheological property of sample is shown in Fig. 2.As seen from Figure 2, it is fine with the biogas residue without acetylation process
Dimension, acetylation biogas residue fiber torsional forces declines to a great extent, and shows that acetylation biogas residue fiber has good mobility.And moment of torsion
The reduction of power, not only effectively reduces energy consumption, and beneficial to the shaping of seedling-cultivation plate.
Embodiment 5
The situation of mechanical property and degradability for the modified biogas residue fiber seedling-cultivation plate of research, the present embodiment is carried out to seedling-cultivation plate
The test of tensile strength and degradability.
Prepare control seedling-cultivation plate：By pretreatment of the biogas residue fiber in embodiment 1,2 and 3 without S1 steps, directly use
Biogas residue fiber suppresses seedling-cultivation plate, and its preparation process is carried out according to the S2 steps in embodiment 1, embodiment 2 and embodiment 3 respectively,
Resulting biogas residue fiber seedling-cultivation plate is labeled as A ' T, B successively ' T and C ' T.
（1）For the ease of carrying out the test of tensile strength to sample, to above-mentioned control seedling-cultivation plate A ' T, B ' T and C ' T and
Seedling-cultivation plate AT, BT and the CT obtained in embodiment 1-3 carries out compression molding agent compacting plate（Long 350mm, wide 350mm are thick
2mm）, the plate saw of compacting is cut into：Long 100mm, wide 10mm, thick 2mm batten, be respectively placed in water soak 0d, 8d, 20d,
30d and 40d, takes out, 10min is dried naturally, then carries out the testing experiment of tensile strength.
Tensile strength test is with reference to GB/T17657-2006《Test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels》Survey
It is fixed, directly detected after batten to be measured is deposited into room temperature 24h, rate of extension is 10mm/min, and 6 are parallel, with arithmetic average
Value is used as test specimen tensile strength.
The test result of table 1 gives AT, BT, CT and A ' T, B ' T and C ' T tensile strength.It can be seen that embodiment
Modification biogas residue fiber seedling-cultivation plate obtained by 1-3 has preferable tensile strength, and after 0 ~ 40d processing, its sample is still
With higher tensile property, illustrate that making modified biogas residue fiber seedling-cultivation plate using biogas residue has preferable use value.
Table 1 is modified the tensile strength test data of biogas residue fiber seedling-cultivation plate sample
（2）Above-mentioned test sample (AT, BT, CT) is cut into 5mm × 50mm × 2mm square piece, middle degraded of placing into the soil
Experiment.
Commercially available PVC seedling-cultivation plates are cut into the square piece of formed objects simultaneously, as a control group, Degrading experiment are carried out in the lump.
The test of degradability：Sample to be tested is dried to constant mass（±0.2g）, after correct amount, it is embedded to
Natural environment soil（In the present embodiment soil be：Vegetable garden soil is tested by our department of academy of agricultural sciences of Jiangsu Province, and soil types is horse liver soil,
The basic physicochemical character of soil is：Organic carbon 10.44g/kg；Full nitrogen 0.78g/kg；Nitrate nitrogen 16.32mg/kg；Rapid available phosphorus
43.35mg/kg；PH value is 7.5）In, burying depth is 10-15cm, takes out sample after burying certain time, uses absolute ethyl alcohol
Sample is cleaned up with deionized water, the mass loss rate that sample is calculated to constant weight, as degradation rate is dried.
Fig. 3 is the sample degradation rate for sample after 18 months.Wherein, A-C is respectively educating for embodiment 1-3 acquisitions
Seedling disk sample degradation rate, D is control group seedling-cultivation plate sample degradation rate；As seen from Figure 3, the soil after 18 months buries processing
Afterwards, the biogas residue fiber seedling-cultivation plate that embodiment 1-3 is obtained has preferable degradation property, the degraded of acetylation biogas residue fiber seedling-cultivation plate
Rate is minimum also to reach more than 40.35%, equally also possesses degradability；And PVC seedling-cultivation plates are substantially non-degradable.Illustrate to utilize modified natural pond
Slag fiber, which prepares seedling-cultivation plate, has preferable degradation property.
Embodiment 6
To understand and grasping the practical application and effect of modified biogas residue fiber seedling-cultivation plate, biogas residue fiber seedling-cultivation plate of the invention is used for
The nursery of cucumber, experiment is carried out in the vinyl house of Jiangsu Province Agriculture Science Institute, and before nursery, biogas residue fiber seedling-cultivation plate is irrigated
Water, is put into cucumber seeds, and slowly drained soil is put into the planting hole of biogas residue fiber seedling-cultivation plate, and other are entered by nursery routine operation
OK, as a result show, cucumber germination percentage is more than 90%, and cucumber seedlings chlorophyll is higher than in BT seedling-cultivation plates made from embodiment 2
Other processing, stem is thick and plant height is superior to AT, CT, B ' T, A ' T, C ' T and PVC plastic alms bowl（See Fig. 4）, show prepared by this formula
Seedling-cultivation plate is beneficial to plant seedling growth.
Specific embodiment used herein is set forth to the principle and embodiment of the present invention, above example
Illustrate the method and its core concept for being only intended to help to understand the present invention.Described above is only the side of being preferable to carry out of the present invention
Formula, it is noted that due to the finiteness of literal expression, and objectively there is unlimited concrete structure, for the art
For those of ordinary skill, under the premise without departing from the principles of the invention, some improvement, retouching can also be made or changed,
Above-mentioned technical characteristic can be by rights combined；These improve retouching, change or combined, or not improved by hair
Bright design and technical scheme directly applies to other occasions, is regarded as protection scope of the present invention.
Claims (6)
1. a kind of method for preparing seedling-cultivation plate using modified biogas residue fiber, it is characterised in that comprise the following steps that：
S1：The acetylation pretreatment of biogas residue fiber：
Dried biogas residue fiber is crushed to 20-80 mesh, toluene, acetylation reagent and catalyst are added, according to heating rate 5
DEG C/min to 90 DEG C ~ 140 DEG C, 0.5h ~ 6h is reacted, 30 DEG C ~ 40 DEG C are cooled to, discharging, with absolute ethyl alcohol and deionized water successively
Alternately cleaning material is to neutrality, and 105 ± 2 DEG C of drying obtain acetylated modification biogas residue fiber;
Wherein, the mass volume ratio of biogas residue fiber and acetylation reagent is 1:2~6；The addition of catalyst is biogas residue fiber quality
0.5 ~ 4%；The mass volume ratio of biogas residue fiber and toluene solvant is 1:2.5~5;
S2：The preparation of biogas residue fiber seedling-cultivation plate：
Acetylated modification biogas residue fiber, biomass binder, reinforcer, curing agent and releasing agent are kneaded into 25- in 45-65 DEG C
35min, discharging, is placed in mould pressing die, hot-forming, that is, obtains biogas residue fiber seedling-cultivation plate；
Wherein, the mass ratio of acetylated modification biogas residue fiber and biomass binder is 1:0.5 ~ 3, reinforcer addition is second
The 3 ~ 8% of acylation modification biogas residue fiber quality, curing agent addition is the 2 ~ 4% of acetylated modification biogas residue fiber quality, releasing agent
Addition is the 1 ~ 5% of acetylated modification biogas residue fiber quality.
2. the method for preparing seedling-cultivation plate using modified biogas residue fiber according to claim 1, it is characterised in that described in S1 steps
Catalyst is para Toluic Acid or para Toluic Acid's sulfuric acid mixture；Para Toluic Acid's sulfuric acid mixture is that para Toluic Acid presses with sulfuric acid
Mass ratio 3：Obtained after 1 mixing.
3. the method for preparing seedling-cultivation plate using modified biogas residue fiber according to claim 2, it is characterised in that described in S1 steps
Acetylation reagent is the one or more in chloroacetic chloride, acetic anhydride or glacial acetic acid.
4. the method for preparing seedling-cultivation plate using modified biogas residue fiber according to claim 1, it is characterised in that described in S2 steps
Biomass binder be urea formaldehyde prepolymers modified soy-bean protein binder；The reinforcer is nano-calcium carbonate, sulfuric acid
One or more in barium, nano silicon, talcum powder, titanium dioxide or antimony oxide；The curing agent be ammonium chloride or
One or more in Adauto Luo product；The releasing agent is one kind in atoleine, microcrystalline wax or Tissuemat E.
5. the method for preparing seedling-cultivation plate using modified biogas residue fiber as described in one of claim 1-4, it is characterised in that S2 steps
It is described hot-forming to refer to：Hot pressing temperature is 100 ~ 120 DEG C, hot pressing pressure 10-30MPa, 40 ~ 70s of hot pressing time.
6. the method for preparing seedling-cultivation plate using modified biogas residue fiber according to claim 5, it is characterised in that during the hot pressing
Between 40 ~ 70s be to include：1st 8 ~ 15s of pressurize；1st 6 ~ 12s of release；2nd 12 ~ 16s of pressurize；2nd 8 ~ 15s of release；
3rd 6 ~ 12s of pressurize.
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| CN111705593A (en) * | 2020-05-22 | 2020-09-25 | 中国路桥工程有限责任公司 | Emulsified asphalt cold-recycling mixture and preparation process thereof |
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| CN108410710A (en) * | 2018-03-27 | 2018-08-17 | 天津市天圣颐和科技有限公司 | A kind of system and production method preparing seedling-cultivation plate using stalk |
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| DE102021105261A1 (en) | 2020-03-06 | 2021-09-09 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | Process for the extraction and processing of fibers from organic residues for the production of molded parts |
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| CN111705593A (en) * | 2020-05-22 | 2020-09-25 | 中国路桥工程有限责任公司 | Emulsified asphalt cold-recycling mixture and preparation process thereof |
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