CN109181334A - A kind of compound package material and preparation method thereof using municipal sludge preparation - Google Patents
A kind of compound package material and preparation method thereof using municipal sludge preparation Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0004—Use of compounding ingredients, the chemical constitution of which is unknown, broadly defined, or irrelevant
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2397/00—Characterised by the use of lignin-containing materials
- C08J2397/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2401/02—Cellulose; Modified cellulose
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K11/00—Use of ingredients of unknown constitution, e.g. undefined reaction products
- C08K11/005—Waste materials, e.g. treated or untreated sewage sludge
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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Abstract
The present invention relates to the environment protection treatment fields of sludge, in particular to a kind of compound package material and preparation method thereof using municipal sludge preparation, the compound package material includes by sludge powder, foamed slurry obtained is mixed in fibre stuff and foaming agent, the sludge powder is passed through by municipal sludge to be made for the materializing strategy of decomposing organic matter, content of organics is less than 10% in the sludge powder, make full use of the cellulose that have passed through in the municipal sludge for the materializing strategy of decomposing organic matter, silica and various metal oxides, make compound package material obtained that there is preferably fire prevention relative to ordinary packing cardboard, the characteristic of Anti-moth-eating, and make microorganism therein, organic matter is decomposed, bacterial virus is destroyed, it is not influenced vulnerable to extraneous acid or alkali environment etc., performance is stablized, the scope of application is wider, it also added hair Infusion increases the number of bubbles in obtained material, makes it have preferable insulation, high-low temperature resistant and dampproof effect, and the scope of application is wider.
Description
Technical field
The present invention relates to the environment protection treatment field of sludge, in particular to a kind of composite packaging material prepared using municipal sludge
Material and preparation method thereof.
Background technique
With the increasingly urbanization of population increasingly increased with world, the yield of city domestic sewage is increasing,
The sludge of byproduct as municipal sewage treatment is also more and more, in municipal sludge containing a large amount of microorganism, humus and
Cellulose, content of organics are generally all higher than 50%, and generally there are two types of modes for the resource utilization of existing municipal sludge, a kind of
It is to be handled by the way of landfill, burning or pyrolysis carbonization by sludge after low temperature desiccation, recycles the energy by producing gas,
Another kind is that the processing such as compost, fermentation, pyrohydrolysis is carried out in a manner of wet mud, and treated, and sludge is mainly used for soil benefit
It is utilized with, building materials or industrial products utilizes.
Packing board is common packaging material, Chinese invention patent application in current e-commerce and logistics
CN107829334A discloses a kind of sludge cardboard and preparation method thereof, and specifically disclosing can be by municipal sludge or industrial sludge
It as raw material, is mixed with plant fiber, adhesive, lubricant etc., by dehydration, molding, drying, press polish, the techniques system such as cuts
At cardboard, still, packing board made from the program, due to there is no to virus, bacterium, organic matter in municipal sludge etc. into
Row processing causes cardboard obtained to be only applicable to the packaging of the small sized product of the non-food stuffs class such as plastic product, glass product, is applicable in
Range is smaller, keeps the consumption to municipal sludge smaller, and cardboard obtained is also easy to bring to user in use
Health hazard influences the utilization and extention of city sewage sludge reclamation.
In conclusion there is presently no prepare to pack using municipal sludge for solution at present there is an urgent need for a kind of technical solution
The perfect scheme of cardboard brings health hazard to user using packing board made from municipal sludge, leads to municipal sludge
The technical issues of resource utilization is limited in scope, and is unfavorable for the utilization and extention of city sewage sludge reclamation.
Summary of the invention
It is an object of the invention to: for there is presently no the perfect scheme for preparing packing board using municipal sludge,
Health hazard is brought to user using packing board made from municipal sludge, the resource utilization range of municipal sludge is caused to have
Limit, the technical issues of being unfavorable for the utilization and extention of city sewage sludge reclamation, provide and a kind of utilize the compound of municipal sludge preparation
Packaging material and preparation method thereof.
To achieve the goals above, the technical solution adopted by the present invention are as follows:
A kind of compound package material prepared using municipal sludge, including stirred by the mixing of sludge powder, fibre stuff and foaming agent
Foamed slurry obtained is mixed, the sludge powder is passed through by municipal sludge to be made for the materializing strategy of decomposing organic matter, described
Content of organics is less than 10% in sludge powder.
A kind of compound package material prepared using municipal sludge of the invention, using the object by being used for decomposing organic matter
Change treated municipal sludge as raw material, make full use of cellulose, silica and the various metal oxides in municipal sludge,
Make compound package material obtained that there is the characteristic of preferably fire prevention, Anti-moth-eating relative to ordinary packing cardboard, is municipal sludge
New Environmental-protection recycling utilization ways are provided, raw material sources are extensive, and cost is lower, simultaneously as the city as raw material
Sludge have passed through the materializing strategy for decomposing organic matter, so that microorganism therein, organic matter are decomposed, bacterial virus is disappeared
It goes out, so that compound package material obtained is not influenced vulnerable to extraneous acid or alkali environment etc., performance is stablized, and use process is more environmentally friendly,
It avoids and brings injury to user, so that the compound package material scope of application is wider, be conducive to increase to municipal sludge
Resource utilization range, in addition, the number of bubbles in obtained material is increased due to also added foaming agent in raw material,
Be conducive to keep compound package material bulk density obtained lighter, and there is preferable insulation, high-low temperature resistant and prevent
Damp effect, the scope of application are wider.
Preferably, including plant fiber and/or paperboard fibres in the fibre stuff, the plant fiber is withered by gardens
Junk and/or agricultural stalk are made, and the foaming agent includes handling protein liquid obtained by protein extraction by animal hair.It is logical
The cellulose increased in obtained material using plant fiber and/or paperboard fibres is crossed, silica in municipal sludge and each is made
The particle of kind metal oxide is preferably locked between the fibers, is conducive to have compound package material obtained preferably
Toughness and warping resistance effect improve the load-bearing property of compound package material, and since the macro surface of agricultural stalk is smooth, structure
Decryption has one layer of native paraffin quality guarantee cuticula, is conducive to the surface roughness for reducing compound package material obtained, so that being made
Compound package material do not need to be surface-treated, the preparation of convenient material also provides for agricultural stalk and discarded cardboard
Economic and environment-friendly resource utilization approach, meanwhile, by using animal hair as foaming agent raw material, protein liquid is prepared as hair
Infusion, not only foaming effect is preferable, also further such that raw material are environmentally friendly, from a wealth of sources, cost is lower, more poultry animal
Hair provides preferable resource utilization approach.
Preferably, the materializing strategy for decomposing organic matter include burn and/or carbonization and/or pyrolysis and/or
Wet oxidation.Organic matter in municipal sludge is decomposed using burning and/or carbonization and/or pyrolysis way, treatment process is simpler,
And rich in carbonized particles object in the sludge powder obtained by processing, be conducive to keep packaging material dampproof effect obtained preferable,
And the organic matter in municipal sludge is decomposed by the way of wet oxidation, using oxidant in liquid phase processing, it can sufficiently remove city
Organic matter in city's sludge, and sterilization and disinfection effect is preferable, heavy metal element therein is also dispersed throughout to oxidizing agent solution
In, make that municipal sludge powder nontoxic, pollution-free, that performance is stable is made, and then make compound package material obtained it is nontoxic, without dirt
Dye, performance are stable, use environmental protection.
Preferably, further including material modifying agent, the material modifying agent includes thermoplastic and/or foam stabilizer, institute
Thermoplastic is stated to mix in molten condition with foamed slurry, the thermoplastic include polyethylene and/or polypropylene and/or
Polyvinyl chloride and/or polystyrene and/or polyamide, the foam stabilizer include glycerine.By adding heat in foamed slurry
Thermoplastic plastic also has a plastics so that compound package material obtained can not only reach the packaging effect of common paperboard packaging material
The characteristic of plate makes compound package material obtained have waterproof, humidity, Anti-moth-eating, antibacterial excellent performance, meanwhile, it is sending out
Foam stabilizer is added in bubble slurry, is conducive to make number of bubbles in foamed slurry more, and stability is more preferable, makes compound packet obtained
Package material is lighter, and the good characteristic with high-low temperature resistant, humidity.
Preferably, in the foamed slurry each component raw material parts by weight are as follows: 20-50 parts of sludge powder, fiber pulp
35-50 parts, 2-3 parts of foaming agent of material.The parts by weight of each raw material can be adjusted according to the actual situation, when the amount for increasing sludge powder
When, the warping resistance intensity and bulk density for being conducive to increase compound package material obtained have when increasing fibre stuff
Be conducive to make gas in compound package material when increasing foaming agent conducive to the toughness and load bearing effect for improving compound package material
Bubble is stablized, and heat insulating effect is preferable.
Preferably, further including 20-35 parts of thermoplastic and/or 1-3 parts of foam stabilizer.It can add according to the actual situation
Thermoplastic and foam stabilizer, so that waterproof and the preferable compound package material of heat insulating effect is made.
Preferably, in the foamed slurry each component raw material parts by weight are as follows: 35 parts of sludge powder, fibre stuff 45
Part, 3 parts of foaming agent, 25 parts of thermoplastic, 2 parts of foam stabilizer.
A kind of preparation method of the compound package material using municipal sludge preparation, specifically comprises the following steps: step 1:
It prepares initial slurry: sludge powder, fibre stuff, foaming agent is mixed to prepare initial slurry；Step 2: foaming processing: heating step
Rapid 1 obtained initial slurry, and foaming is stirred simultaneously, obtained foamed slurry, 120 DEG C -150 DEG C of heating temperature；Step 3: mold at
Type: foamed slurry injection mold, drying forming is made in step 2.
A kind of preparation method of compound package material using municipal sludge preparation of the invention, preparation process is simpler,
And increasing the bubbles volume in foamed slurry by the way of stirring foaming, foaming effect is preferable, using formed in mould mode system
Standby compound package material, can using more convenient so that compound package material obtained, which does not need to cut, is directly used in article packaging
According to the actual situation, it is prepared in advance after each raw material, carries out that foaming and mold is mixed when needing using packaging material
Molding, facilitates the preparation of the compound package material.
Preferably, being additionally provided with step 2.1 between step 2 and step 3: heat improved materials: being added in foamed slurry
Thermoplastic plastic and/or foam stabilizer stir evenly the foamed slurry that improvement is made.It can be injected according to the actual situation in foamed slurry
Material modifying agent is added before mold, so that according to the actual situation, the compound package material of different performance being made, makes the preparation side
Formula is suitable for preparing the compound package material of different performance, and the scope of application is wider.
Preferably, the step 1 includes step 1.1: preparing sludge powder: by municipal sludge successively by being used to decompose
Sludge powder is made after the materializing strategy of organic matter, drying process, the materializing strategy for decomposing organic matter includes burning
And/or carbonization and/or pyrolysis and/or wet oxidation, the sludge powder moisture content is less than 2%.It can select according to the actual situation
The materializing strategy mode of one or more decomposing organic matters handles municipal sludge, effectively reduces organic in municipal sludge
The content of object.
Preferably, the step 1 further includes step 1.2: preparing fibre stuff: using gardens Litter-fall and/or agricultural
Stalk and/or discarded cardboard are raw material, handle and the fibre stuff containing plant fiber and/or paperboard fibres is made.It can be according to reality
Border situation selects one or more materials with cellulose to prepare fibre stuff after treatment, and material source is extensive, and its
In cellulose can be easier to be dispersed to extract, facilitate the preparation of fibre stuff.
Preferably, the step 1 further includes step 1.3: preparing foaming agent: using animal hair for raw material, successively pass through
Protein liquid foaming agent is made after over cleaning, drying, crushing, acid soak, pyrohydrolysis, filtering, the pH value of the protein liquid is less than
7.By using animal hair as raw material, protein liquid is prepared as foaming agent, is provided for the resource utilization of animal hair
Economic and environment-friendly utilization ways, and processing mode is simpler, facilitates the environmental protection preparation of foaming agent.
Preferably, the step 1.2 includes the following steps: step 1.2.1: preparing plant fiber powder: gardens are withered
Plant fiber powder is successively made in junk and/or agricultural stalk after crushing, dipping by lye, cleaning, drying, crushing, described
Plant fiber powder moisture content is less than 2%；Step 1.2.2: it prepares paperboard fibres slurry: after discarded cardboard is impregnated softening, crushing
Paperboard fibres slurry is made；Step 1.2.3: it is stirred: plant fiber powder and paperboard fibres slurry is mixed, add cementing
Agent stirs evenly, and fibre stuff is made.The preparation method of plant fiber powder and paperboard fibres slurry is simpler, can be easier to
Dispersion extract cellulose therein, recycle cementing agent to bond together, make fibre stuff and sludge powder mixing obtained
Easier condensation molding afterwards, provides economic and environment-friendly resource for gardens Litter-fall and/or agricultural stalk and/or paper stock board
Change utilization ways.
In conclusion by adopting the above-described technical solution, a kind of compound packet prepared using municipal sludge of the invention
The beneficial effect of package material is:
1, it is made full use of in municipal sludge using the municipal sludge after the materializing strategy for decomposing organic matter as raw material
Cellulose, silica and various metal oxides, there is compound package material obtained more relative to ordinary packing cardboard
The characteristic of good fire prevention, Anti-moth-eating, new Environmental-protection recycling utilization ways is provided for municipal sludge, raw material sources are extensive, make
Valence is lower；
2, since the municipal sludge as raw material have passed through the materializing strategy for decomposing organic matter, so that micro- life therein
Object, organic matter are decomposed, and bacterial virus is destroyed, so that compound package material obtained is not vulnerable to shadows such as extraneous acid or alkali environments
It rings, performance is stablized, and use process is more environmentally friendly, also avoids bringing injury to user, so that the compound package material is applicable in model
It encloses relatively extensively, is conducive to increase the resource utilization range to municipal sludge；
3, due to also added foaming agent in raw material, the number of bubbles in obtained material is increased, is conducive to make obtained
Compound package material bulk density is lighter, and has preferable insulation, high-low temperature resistant and dampproof effect, the scope of application
It is wider；
A kind of beneficial effect of the preparation method of compound package material using municipal sludge preparation of the invention is:
1, preparation process is simpler；
2, increase the bubbles volume in foamed slurry by the way of stirring foaming, foaming effect is preferable；
3, compound package material is prepared using formed in mould mode, so that compound package material obtained does not need to cut directly
It is packed for article, using more convenient.
Detailed description of the invention
Fig. 1 is a kind of preparation flow schematic diagram of compound package material using municipal sludge preparation of the invention；
Fig. 2 is the preparation flow schematic diagram of heretofore described foamed slurry；
Fig. 3 is the preparation flow schematic diagram of heretofore described fibre stuff.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing and specific implementation
Example, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only to explain this hair
It is bright, it is not intended to limit the present invention.
Embodiment 1
As shown in Figure 1-3, it is a kind of using municipal sludge prepare compound package material, including by sludge powder, fibre stuff and
Foamed slurry obtained is mixed in foaming agent, and the sludge powder is passed through the materialization for decomposing organic matter by municipal sludge
Reason is made, and content of organics is less than 10% in the sludge powder.
A kind of compound package material prepared using municipal sludge of the present embodiment, it is preferably described for decomposing organic matter
Materializing strategy is wet oxidation processing, includes the plant fiber as made from agricultural stalk in the fibre stuff, so that being simultaneously
Municipal sludge and agricultural stalk provide economic and environment-friendly resource utilization approach, make full use of cellulose in municipal sludge,
Silica and various metal oxides pass through plant fiber in conjunction with the albumen in the cellulose and municipal sludge in plant fiber
With the cellulose in municipal sludge by silica and various metal oxides constraint stabilization in municipal sludge, pass through municipal sludge
In albumen so that slurry is foamed under stirring, form more stable bubble, and act in the foam stabilizing of albumen and cellulose
Under, make compound package material obtained that there is the characteristic of preferably fire prevention, Anti-moth-eating, load-bearing energy relative to ordinary packing cardboard
Power, heat insulating effect are more preferable, and mass per volume is smaller, and use is lighter, and raw material sources are extensive, and cost is lower, city
Organic matter in sludge is reduced in advance, stablizes its performance, is not influenced vulnerable to extraneous acid or alkali environment etc., use process more ring
It protects, injury will not be brought to user, so that the compound package material scope of application is wider, increase the recycling to municipal sludge
Utilization scope.
Preferably, in the foamed slurry each component raw material parts by weight are as follows: 20-50 parts of sludge powder, fibre stuff
35-50 parts, 2-3 parts of foaming agent.The parts by weight of each raw material can be adjusted according to the actual situation, when increasing the amount of sludge powder,
Be conducive to increase the warping resistance intensity and bulk density of compound package material obtained, when increasing fibre stuff, favorably
Be conducive to make bubble in compound package material when increasing foaming agent in the toughness and load bearing effect for improving compound package material
Stablize, heat insulating effect is preferable.
Preferably, the fibre stuff includes the plant fiber as made from agricultural stalk and the cardboard as made from discarded cardboard
Fiber, the parts by weight of each component raw material in the foamed slurry are as follows: 20-50 parts of sludge powder, 20-30 parts of plant fiber, paper
15-20 parts of plate fiber, 2-3 parts of foaming agent, the parts by weight of each component raw material in the specific foamed slurry are as follows: sludge powder 40
Part, 25 parts of plant fiber, 17 parts of paperboard fibres, 3 parts of foaming agent.The amount of each raw material component can be adjusted according to the actual situation, so that
The compound package material with different performance is made, and the dosage of sludge powder can be increased according to the actual situation, so that increase pair
The consumption of municipal sludge.
Embodiment 2
As shown in Figure 1-3, a kind of compound package material prepared using municipal sludge of the present embodiment, raw material composition and embodiment
1 is identical, and difference is: the foaming agent includes handling protein liquid obtained by protein extraction by animal hair.
A kind of compound package material prepared using municipal sludge of the present embodiment, by using animal hair as preparation
The raw material of foaming agent prepares protein liquid as foaming agent using animal hair, and not only foaming effect is preferable, and has preferable steady
Effect is steeped, also further such that raw material are environmentally friendly, from a wealth of sources, cost is lower, compound package material material obtained is light, protects
Warm heat insulation is preferable, and more animal hair provides preferable resource utilization approach, the preferably described animal wool of the present embodiment
Hair is poultry feather, and formation is integrated with the environmentally friendly composite packaging material of three kinds of municipal sludge, agricultural stalk, poultry feather wastes
Material, provides economic and environment-friendly utilization ways to the greatest extent for these wastes.
Embodiment 3
As shown in Figure 1-3, a kind of compound package material prepared using municipal sludge of the present embodiment, raw material composition and embodiment
1 is identical, and difference is: further including material modifying agent, the preferably described material modifying agent of the present embodiment includes thermoplastic and steady
Infusion.
A kind of compound package material prepared using municipal sludge of the present embodiment, by adding thermoplastic in foamed slurry
Property plastics also have a plastic plate so that compound package material obtained can not only reach the packaging effect of common paperboard packaging material
Characteristic, make compound package material obtained that there is waterproof, humidity, Anti-moth-eating, antibacterial excellent performance, and surface roughness
It is smaller, meanwhile, foam stabilizer is added in foamed slurry, is conducive to make number of bubbles in foamed slurry more, and stability is more preferable,
Keep compound package material obtained lighter, and the good characteristic with high-low temperature resistant, humidity, the preferably described heat of the present embodiment
Thermoplastic plastic is polystyrene, and the foam stabilizer is glycerine.
It preferably, include thermoplastic 20-35 parts in the foamed slurry, 1-3 parts of foam stabilizer, the preferably described foaming is starched
The parts by weight of each component raw material in material are as follows: 20-50 parts of sludge powder, 20-30 parts of plant fiber, 15-20 parts of paperboard fibres, hair
2-3 parts of infusion, 20-35 parts of thermoplastic, 2 parts of foam stabilizer, the parts by weight of each component raw material in the specific foamed slurry
Are as follows: 45 parts of sludge powder, 28 parts of plant fiber, 18 parts of paperboard fibres, 2.5 parts of foaming agent, 30 parts of polystyrene, 2 parts of glycerine.
The parts by weight of each component raw material can be adjusted according to the actual situation, so that the compound package material of different performance is made.
Embodiment 4
As shown in Figure 1-3, a kind of preparation method of the compound package material using municipal sludge preparation, specifically includes following step
It is rapid: step 1: preparing initial slurry: sludge powder, fibre stuff, foaming agent are mixed to prepare initial slurry；Step 2: at foaming
Reason: initial slurry is made in heating stepses 1, and stirs foaming simultaneously, and foamed slurry is made, 120 DEG C -150 DEG C of heating temperature, stirs
Speed 1500r/min-2500r/min, preferably 2000r/min；Step 3: foamed slurry injection mold molding: is made in step 2
Mold, drying forming.
Preferably, the step 1 specifically includes step 1.1: preparing sludge powder: by municipal sludge by wet oxidation
After reason, content of organics in municipal sludge is reduced, until organic matter volume content, less than 10%, it is small that moisture content is made in re-dry processing
In 2% sludge powder.Municipal sludge is handled by wet oxidation processing, makes the organic matter in municipal sludge by liquid
Wet oxidation treatment process decompose totally, it is preferable to the discomposing effect of organic matter, be also beneficial to by municipal sludge bacterium,
Virus is eliminated in the liquid phase thoroughly makes to be made the less stabilized sludge powder of content of organics.
Preferably, the step 1 specifically further includes step 1.2: preparing fibre stuff: using gardens Litter-fall and/or agriculture
Industry stalk and/or discarded cardboard are raw material, handle and the fibre stuff containing plant fiber and/or paperboard fibres is made.It can basis
Actual conditions, using one of gardens Litter-fall, agricultural stalk, discarded cardboard or a variety of, the operation of progress cellulose extraction
Afterwards, cellulose therein is extracted in dispersion.
Preferably, the step 1.2 specifically includes step 1.2.1: preparing plant fiber powder: agricultural stalk is crushed to
After 1-5mm, dipping by lye is carried out, the lye is the sodium hydroxide solution of concentration 3%-7%, and the sodium hydroxide of preferred concentration 5% is molten
Liquid, soaking time at least 24H, is dispersed throughout the plant fiber in agricultural stalk into alkaline solution, by filtration and washing
Solid matter is extracted, solid matter will be obtained, plant fiber powder, the plant are successively made after over cleaning, drying, crushing
Fiber powder moisture content is less than 2%；Step 1.2.2: it prepares paperboard fibres slurry: after discarded cardboard is impregnated softening, crushing and be made
Paperboard fibres slurry；Step 1.2.3: it is stirred: plant fiber powder and paperboard fibres slurry is mixed, add cementing agent,
It stirs evenly, fibre stuff is made.By preparing plant fiber powder and paperboard fibres slurry respectively, processing is remixed, favorably
In being evenly distributed on paperboard fibres in fibre stuff, without agglomeration, make compound package material material obtained
Uniformly, the scope of application is wider, while also providing for gardens Litter-fall and/or agricultural stalk and/or paper stock board economic and environment-friendly
Resource utilization approach, in addition, also facilitate according to the actual situation, prepare respectively plant fiber powder and paperboard fibres storage,
Mixing and water adding stirring is carried out when in use, facilitates the preparation of compound package material, and the present embodiment is further preferably by plant fiber powder
While material and the mixing of paperboard fibres slurry, cementing agent and water are added, after convenient fibre stuff obtained is mixed with sludge powder
Condensation molding can be easier dried, is also beneficial to for the cellulose in fibre stuff being accumulated in fibre stuff, the glue
Tying agent is preferably gelatin, and the additive amount of the gelatin is 3-8 parts, and preferably 4-5 parts, fibre stuff obtained can be according to practical feelings
Condition, addition water are reconciled, and the foamed slurry for being easy dry condensation, the present embodiment are made after facilitating fibre stuff to mix with sludge
It is preferably added to 40-45 parts of water.
Embodiment 5
As shown in Figure 1-3, a kind of preparation method of compound package material using municipal sludge preparation of the present embodiment, technique step
Rapid same as Example 4, difference is: the step 1 further includes step 1.3: preparing foaming agent: using animal hair for original
Protein liquid foaming agent is successively made in material after over cleaning, drying, crushing, acid soak, pyrohydrolysis, filtering, the protein liquid
PH value is less than 7.
A kind of preparation method of compound package material using municipal sludge preparation of the present embodiment, preferably poultry feather
As raw material, poultry feather is successively put into the sulfuric acid solution of 8mol/L after over cleaning, drying, crushing, is heated to 80
DEG C -100 DEG C of progress pyrohydrolysis, pyrohydrolysis time 5-8H obtain rich protein-contg acid solution, after appropriate adjustment pH value, are made
Protein liquid of the pH value less than 7 can be used as foaming agent use, provide economic and environment-friendly utilization for the resource utilization of animal hair
Approach, and processing mode is simpler, facilitates the environmental protection preparation of foaming agent.
Embodiment 6
As shown in Figure 1-3, a kind of preparation method of compound package material using municipal sludge preparation of the present embodiment, technique step
Rapid same as Example 5, difference is: step 2.1 is additionally provided between step 2 and step 3: improved materials: in foamed slurry
Middle addition thermoplastic and/or foam stabilizer are heated to 120 DEG C -150 DEG C and then stir evenly the foaming slurry that improvement is made
Material, the present embodiment preferably add thermoplastic and foam stabilizer simultaneously, and the preferably described thermoplastic is polystyrene, described steady
Infusion is preferably glycerine.
The preparation method of a kind of compound package material using municipal sludge preparation of the present embodiment, by foamed slurry
Material modifying agent is added before injecting mold, makes spy of the compound package material with plastic plate obtained using hot polymerization styrene
Property, toughness is more preferable, and load-bearing, heat insulating effect are all more preferable, meanwhile, the foam stabilizer of addition is conducive to make composite packaging material obtained
Contain more bubble in material, further increases its heat insulating effect, mass per volume is lighter, facilitates composite packaging material
Material is only used, so that the compound package material of different performance can be made according to the actual situation, the preparation method is made to be suitable for preparation
The compound package material of different performance, the scope of application are wider.
Above embodiments are only to illustrate the present invention and not limit the technical scheme described by the invention, although this explanation
The present invention has been described in detail referring to the above embodiments for book, but the present invention is not limited to above-mentioned specific embodiment party
Formula, therefore any couple of present invention modifies or equivalent replacement, and the technical solution of all spirit and scope for not departing from invention
And its improve, it should all cover within the scope of the claims of the present invention.
Claims (10)
1. it is a kind of using municipal sludge prepare compound package material, it is characterised in that: including by sludge powder, fibre stuff and
Foamed slurry obtained is mixed in foaming agent, and the sludge powder is passed through the materialization for decomposing organic matter by municipal sludge
Reason is made, and organic matter volume content is less than 10% in the sludge powder.
2. compound package material as described in claim 1, it is characterised in that: the materializing strategy packet for decomposing organic matter
Burning and/or carbonization and/or pyrolysis and/or wet oxidation are included, includes that plant fiber and/or cardboard are fine in the fibre stuff
Dimension, the plant fiber are made by gardens Litter-fall and/or agricultural stalk.
3. compound package material as described in claim 1, it is characterised in that: it further include material modifying agent, the material improvement
Agent includes thermoplastic and/or foam stabilizer, and the thermoplastic is mixed in molten condition with foamed slurry.
4. compound package material as described in claim 1, it is characterised in that: the weight of each component raw material in the foamed slurry
Measure part are as follows: 20-50 parts of sludge powder, 35-50 parts of fibre stuff, 2-3 parts of foaming agent.
5. compound package material as claimed in claim 4, it is characterised in that: further include 20-35 parts of thermoplastic and/or steady
1-3 parts of infusion.
6. compound package material as claimed in claim 5, it is characterised in that: the weight of each component raw material in the foamed slurry
Measure part are as follows: 35 parts of sludge powder, 45 parts of fibre stuff, 3 parts of foaming agent, 25 parts of thermoplastic, 2 parts of foam stabilizer.
7. a kind of preparation method of the compound package material using municipal sludge preparation, it is characterised in that: specifically include following step
It is rapid:
Step 1: preparing initial slurry: sludge powder, fibre stuff, foaming agent are mixed to prepare initial slurry；
Step 2: foaming processing: initial slurry is made in heating stepses 1, and stirs foaming simultaneously, and foamed slurry, heating temperature is made
120℃-150℃；
Step 3: foamed slurry injection mold, drying forming mold molding: is made in step 2.
8. preparation method as claimed in claim 7, it is characterised in that: be additionally provided with step 2.1 between step 2 and step 3: changing
Good timber material: being added thermoplastic and/or foam stabilizer in foamed slurry, stirs evenly the foamed slurry that improvement is made.
9. preparation method as claimed in claim 7, it is characterised in that: the step 1 includes the following steps:
Step 1.1: preparing sludge powder: by municipal sludge successively by being used for the materializing strategy of decomposing organic matter, being dried
Afterwards be made sludge powder, the materializing strategy for decomposing organic matter include burn and/or carbonization and/or be pyrolyzed and/or it is wet
Formula oxidation, the sludge powder moisture content is less than 2%；
Step 1.2: preparing fibre stuff: using gardens Litter-fall and/or agricultural stalk and/or discarded cardboard for raw material, handle
The fibre stuff containing plant fiber and/or paperboard fibres is made；
Step 1.3: preparing foaming agent: using animal hair for raw material, successively through over cleaning, drying, crushing, acid soak, heat
Protein liquid foaming agent is made after hydrolysis, filtering, the pH value of the protein liquid is less than 7.
10. preparation method as claimed in claim 9, it is characterised in that: the step 1.2 includes the following steps:
Step 1.2.1: it prepares plant fiber powder: gardens Litter-fall and/or agricultural stalk is successively soaked by crushing, lye
Plant fiber powder is made after bubble, cleaning, drying, crushing, the plant fiber powder moisture content is less than 2%；
Step 1.2.2: it prepares paperboard fibres slurry: after discarded cardboard is impregnated softening, crushing and paperboard fibres slurry is made；
Step 1.2.3: it is stirred: plant fiber powder and paperboard fibres slurry is mixed, add cementing agent, stir evenly,
Fibre stuff is made.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810802086.8A CN109181334A (en) | 2018-07-20 | 2018-07-20 | A kind of compound package material and preparation method thereof using municipal sludge preparation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810802086.8A CN109181334A (en) | 2018-07-20 | 2018-07-20 | A kind of compound package material and preparation method thereof using municipal sludge preparation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114634328A (en) * | 2022-02-28 | 2022-06-17 | 江南大学 | Biomass composite packaging board and preparation method thereof |
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| CN114634328B (en) * | 2022-02-28 | 2023-01-24 | 江南大学 | Biomass composite packaging board and preparation method thereof |
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Application publication date: 20190111 |