CN106468034B - A kind of preparation method of intumescent alumina silicate fibre thermal insulation material - Google Patents
A kind of preparation method of intumescent alumina silicate fibre thermal insulation material Download PDFInfo
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- CN106468034B CN106468034B CN201610816723.8A CN201610816723A CN106468034B CN 106468034 B CN106468034 B CN 106468034B CN 201610816723 A CN201610816723 A CN 201610816723A CN 106468034 B CN106468034 B CN 106468034B
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- vermiculite
- alumina silicate
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- silicate fibre
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/12—Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/50—Spraying or projecting
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Paper (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The present invention relates to the technical field of alumina silicate fibre heat-preserving complex material production, it is body material specifically using aluminium silicate fiber peacekeeping vermiculite, it is mixed in a certain ratio after disperseing, using wet papermaking process forming technique, through starching, cloth slurry, dehydration, sizing, dry, ornamenting and batch to obtain final products.Whole flow process dilution water and adhesive each recycle respectively into autonomous system, pollution-free without outer row.350 600kg/m of fiber heat preservation material initial density produced by this method3, density is 200 350kg/m after expanded by heating3, can be as equipment, the thermal insulation material of pipeline, especially shaped piece.
Description
Technical field
The present invention relates to the invention belongs to heat preserving and insulating material technical field, and in particular to one kind utilizes aluminium silicate fiber peacekeeping
Vermiculite is the preparation method of the intumescent alumina silicate fibre thermal insulation material of primary raw material.
Background technology
As the increase of energy consumption and the exacerbation of problem of environmental pollution, energy conservation and environmental protection are increasingly serious.Thermal insulation separation
Heat is to save a kind of effective way of the energy.
Alumina silicate fibre is the best substitute after asbestos fibre disabling, its cost and performance are all extensive by market
Receive, be one of less than 1300 DEG C main thermal insulation materials.Product form mainly with aluminum silicate fiber paper, alumina silicate fiber felt and
Based on alumina silicate fibre blanket.These traditional alumina silicate fibre heat insulating products do not possess expansion character, in use with just
The form of beginning has almost no change, and it is not close that this causes it to be contacted with heater, especially in the insulation to shaped piece heater
It is especially prominent under processing, cause heat insulation effect to reduce.
Vermiculite is a kind of natural expanded by heating（Expansion temperature：300-500℃）Type mineral material, itself does not possess flammable
Property, and multilayer chip structure is presented after expanding, the space of relative closure is formed, therefore, thermal conductivity factor is relatively low, possesses good guarantor
Warm heat insulation, is excellent fire-proof heat-insulating material.But vermiculite is into graininess, it is difficult to is molded, limits its use scope.
Also have in the prior art and fibrous material is reached into the record of fire-retardant, insulation and other effects with vermiculite compound use.Such as
CN103821285A discloses a kind of construction method of environmentally friendly roofing heat-insulating layer,（1）One layer of alumina silicate insulation is laid with roofing
Material（2）Manually stirring water is uniformly put on expanded vermiculite with cement into cement mortar, then by cement mortar, then will uniformly be wiped with cement mortar
Expanded vermiculite be uniformly applied on alumina silicate insulating layer formation expanded vermiculite insulating layer.Alumina silicate insulating layer is point with vermiculite layers
Open, compound action is smaller.CN102557529A is related to a kind of vermiculite composite thermal insulation materials, including major ingredient A, B and auxiliary material A, B,
Major ingredient A：Granularity be 30-100 mesh 1-8 parts of vermiculite, major ingredient B：1-8 parts of phenolic resin, auxiliary material A are by talcum powder, foaming agent, work
The mixture that property agent, softening agents and curing agent mix in any proportion, auxiliary material B is short glass fiber.The binding agent phenolic aldehyde used
Resin is more, however it remains the rise of great energy consumption and cost.
The content of the invention
In order to solve the above in the prior art fibrous material with compound action present in vermiculite produced with combination thermal insulation material
It is weak, there are energy consumption and it is of high cost the problem of, this application discloses a kind of alumina silicate fibre and vermiculite composite strengthening effect it is bright
Aobvious, reduction energy consumption, the preparation method of lower-cost intumescent alumina silicate fibre thermal insulation material.
The present invention using aluminium silicate fiber peacekeeping vermiculite is body material, is mixed in a certain ratio after disperseing, with PVA, starch,
CMC, latex, waterglass or Ludox etc. are used as adhesive, using wet papermaking process forming technique, through starching, cloth slurry, take off
Water, sizing, drying, ornamenting and batch to obtain final products.The composite material in use, after heated processing, its leech
Stone component starts to expand, and drives whole composite material volume to increase, plays good filling and sealing function, thus improve its every
Thermal effect.Non-wastewater discharge in the whole production process of the material, non-environmental-pollution.
What the present invention was obtained through the following steps：
A kind of preparation method of intumescent alumina silicate fibre thermal insulation material, comprises the following steps：
（1）Alumina silicate fibre is configured to slurry, then by fibre cutting to 10-15mm；
（2）Slagging-off；
（3）To step（2）Vermiculite is added in obtained slurry；
（4）Step（3）Obtained mixed slurry is pumped to head box, then dehydration forming, declines in wet web water content
To the position that tarnishes（When paper pulp is dehydrated after wet end shaping in vacuum, l Water Paper page loses light since water content declines moment
Pool, forms a critical line when tarnishing, and is known as waterline）Spray adhesive, drying and moulding；
Wherein, the weight ratio of alumina silicate fibre, vermiculite and adhesive is（10-17）:（3-10）:（1-2）；
Vermiculite particle diameter is 1-4mm.
The preparation method, preferred steps（1）Middle alumina silicate fibre is made into the slurry of 2-5% concentration.
The weight ratio of the preparation method, preferably alumina silicate fibre and vermiculite is 2-5:1.
The preparation method, preferably adhesive main function are guarantee vermiculite unexpanded preceding between alumina silicate fibre
Combination, and the intensity of product, can choose PVA, CMC, starch, glue according to the specific performance index request of price and product
Adhesive adhesive of one or more of breast, waterglass, Ludox etc. the adhesive as product.
Preparation method described in 1, preferably drops to the position that tarnishes in wet web water content, using spray pattern by glue
Glutinous agent is sprayed onto the material surface of dehydration forming, and vacuum suction, negative pressure 0.01-0.04MPa are provided in shaping sieve bottom.
The preparation method, preferably adhesive are PVA：Acrylic latex：Starch=1:2:4 or Ludox：Acrylate glue
Breast：Starch=2:4:2.
The preparation method, preferably alumina silicate fibre and vermiculite ratio are 3:1, vermiculite particle diameter is 3mm, and adhesive is silicon
Colloidal sol：Acrylic latex：Starch=2:4:2, adhesive dosage is alumina silicate fibre and the 5-30% of vermiculite gross weight.
The preparation method, it is preferred to use WATER-WASHING METHOD removes the gred：Using sand trap slagging-off mode, slurry concentration is adjusted and is arrived
1-3%, flow velocity 20-60m/min, three partition plates, baffle interval are 2-3 meters.
The preparation method, preferred steps（4）It is middle by step（3）Obtained mixed slurry is made into concentration 1-3%, passes through
Stock pump is pumped to head box, then dehydration forming.
Beneficial effects of the present invention：
（1）The present invention provides one kind using aluminium silicate fiber peacekeeping vermiculite as main material, pass through wet papermaking forming technique
Prepare alumina silicate fibre/vermiculite composite thermal insulation materials.The material possesses the characteristic of paper base material, easily molded, can be mass, and
It can expand 1-5 times on the original basis after a heating treatment, the fiber heat preservation material initial density 350-600 kg of production/
m3, density is 200-350 kg/m after expanded by heating3, as a kind of excellent heat preserving and insulating material, can be used as equipment, pipeline,
Especially in the insulation processing of shaped piece, have a clear superiority；
（2）The compound insulating material prepared by this technique had both had both aluminum silicate fibre product softness, thermal and insulating performance
Feature, and the characteristic expanded after vermiculite is heated is added, expand application field and improve heat insulation effect；
（3）Whole flow process dilution water and adhesive each recycle respectively into autonomous system, without outer row, no dirt
Dye.
Brief description of the drawings
Fig. 1 is before the intumescent alumina silicate fibre thermal insulation material that the present invention is prepared expands（It is left）After expansion（It is right）It is right
Than figure.
Embodiment
In order to be better understood from the present invention, further illustrated with reference to instantiation.
Embodiment 1：
（1）50-85 kg alumina silicate fibres are made into the slurry of 2-5% concentration, in 2m3The Valley beater of capacity adds 5-10
Kg weights are pumped into size-mixing tank after cutting off 30-60 minutes；
（2）1-2% concentration is diluted with water to, keeps stirring in size-mixing tank, is sent by pumping to sand trap, adjustment pump discharge makes
Flow velocity of the slurry in sand trap keeps 30-50m/min, and forebay is destroyed by being pumped to after three dirt sediment barrier plates；
（3）The vermiculite that 15-50 kg particle diameters are 1-4mm is added in forebay copying, after stirring 5-10 minutes, and is kept stirring；
（4）By the slurry pumping mixed up to head box dehydration forming, drop to the position that tarnishes in wet web water content
Adhesive 5-10 kg are sprayed, then by drying and moulding, obtain the intumescent compound insulating material in attached drawing.
Wherein, the expansion rate of alumina silicate fibre and vermiculite scale effect final products, and then influence thermal conductivity factor；Adhesive
Species selection and dosage influence expansion before and expansion after product intensity；The size of the particle diameter of vermiculite influences the expansion system of product
The distribution situation of number and vermiculite in page.
In one embodiment, fixed vermiculite particle diameter is 3mm, and alumina silicate fibre and vermiculite ratio are respectively 5:Isosorbide-5-Nitrae:1,3:
1,2:When 1, obtained product expansion rate is respectively 180%, 210%, 265%, 350%, and the thermal conductivity factor that 800 DEG C of product is respectively
0.124W/(M·K), 0.117W/(M·K), 0.101W/(M·K), 0.083W/(M·K)。
In another embodiment, fixed alumina silicate fibre and vermiculite ratio are respectively 3:When 1, vermiculite particle diameter is respectively
When 0.5mm, 1mm, 3mm, 4mm, the expansion rate for obtaining product is respectively 127%, 221%, 265%, 293%.When compared with small particle, leech
Stone can not strut fiber in expansion process, but can intert in gap between the fibers, so expansion effect is bad,
And particle diameter it is excessive more than 4mm after, can cause local expansion is excessive to cause the uneven of material.So suggest size controlling in 1-
Between 4mm.
In another embodiment, fixed alumina silicate fibre and vermiculite ratio are 3:1, vermiculite particle diameter is 3mm, and adhesive divides
Not Wei a (PVA, acrylic latex, starch mixed liquor) and during b (Ludox, acrylic latex, starch), if adhesive is a
PVA：Acrylic latex：Starch=1:2:4, when dosage is 8 % and 10 %, distinguish before the expansion of its product with tensile strength after expansion
For 4.73/Nmg-1With 0.09/Nmg-1With 5.01 Nmg-1With 0.10/Nmg-1If adhesive is molten for b silicon
Glue：Acrylic latex：Starch=2:4:2, when dosage is 8% and 10%, be respectively with tensile strength after expansion before the expansion of its product
4.62/N·m·g-1With 0.57/Nmg-1With 4.79 Nmg-1With 0.63/Nmg-1。
Since adhesive species and amount ranges are larger, just do not enumerate, can be allocated according to specific requirement again.
Other process conditions use operation customary in the art, and this will not be repeated here.
Embodiment 2：
Wet papermaking forming technique is not used, but uses conventional mixing, dry technology
（1）50-85 kg alumina silicate fibres are made into the slurry of 2-5% concentration, in 2m3The Valley beater of capacity adds 5-10
Kg weights are cut off 30-60 minutes, dry；
（2）The vermiculite that 15-50 kg particle diameters are 1-4mm is added, is stirred evenly；
（3）Adhesive 5-10 kg are added, stirs evenly, then by drying and moulding, obtains intumescent thermal insulation material.
Fixed alumina silicate fibre and vermiculite ratio are 3:1, vermiculite particle diameter is 3mm, and adhesive is respectively a (PVA, acrylic acid
Latex, starch mixed liquor) and during b (Ludox, acrylic latex, starch), if adhesive is a PVA：Acrylic latex：Starch
=1:2:4, when dosage is 8 % and 10 %, tensile strength is respectively 2.83/Nmg before the expansion of its product and after expansion-1With
0.07/N·m·g-1With 4.17 Nmg-1With 0.7/Nmg-1If adhesive is b Ludox：Acrylic latex：Starch
=2:4:2, when dosage is 8% and 10%, tensile strength is respectively 4.01/Nmg before the expansion of its product and after expansion-1With 0.51/
N·m·g-1With 4.07 Nmg-1With 0.53/Nmg-1。
Vermiculite using aluminium silicate fiber peacekeeping particle diameter as 1-4mm is primary raw material, is mixed in a certain ratio scattered, and process is with slurry
Thicken, head box is pumped to using stock pump, with wet papermaking process forming technique, starch, be dehydrated through filled cloth, being glued, is dry, is whole
Adorn and batch to obtain final products.Whole flow process dilution water and adhesive recycle respectively into autonomous system, without outer
Row, it is pollution-free.
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention and from the limit of embodiment
System, it is other it is any without departing from the present invention Spirit Essences with made under principle change, modification, combine, replacement, simplification should be
Equivalence replacement mode, is included within protection scope of the present invention.
Claims (8)
1. a kind of preparation method of intumescent alumina silicate fibre thermal insulation material, it is characterised in that comprise the following steps：
（1）Alumina silicate fibre is configured to slurry, then by fibre cutting to 10-15mm；
（2）Slagging-off；
（3）To step（2）Vermiculite is added in obtained slurry；
（4）Step（3）Obtained mixed slurry is pumped to head box, then dehydration forming, drops to mistake in wet web water content
Frost position sprinkling adhesive, drying and moulding；
Wherein, the weight ratio of alumina silicate fibre, vermiculite and adhesive is（10-17）:（3-10）:（1-2）；
Vermiculite particle diameter is 1-4mm；
The weight ratio of alumina silicate fibre and vermiculite is 2-5:1.
2. preparation method according to claim 1, it is characterised in that step（1）Middle alumina silicate fibre is made into 2-5% concentration
Slurry.
3. preparation method according to claim 1, it is characterised in that adhesive PVA, CMC, starch, latex, waterglass,
One or more of Ludox.
4. preparation method according to claim 1, it is characterised in that drop to the position that tarnishes in wet web water content,
Adhesive is sprayed onto to the material surface of dehydration forming using spray pattern, provides vacuum suction in shaping sieve bottom, negative pressure is
0.01-0.04MPa。
5. preparation method according to claim 1, it is characterised in that adhesive PVA：Acrylic latex：Starch=1:2:4
Or Ludox：Acrylic latex：Starch=2:4:2.
6. preparation method according to claim 1, it is characterised in that removed the gred using WATER-WASHING METHOD：Using sand trap slagging-off side
Formula, it is 2-3 meters that slurry concentration, which is adjusted to 1-3%, flow velocity 20-60m/min, three partition plates, baffle interval,.
7. preparation method according to claim 1, it is characterised in that step（4）It is middle by step（3）Obtained mixed slurry
Concentration 1-3% is made into, head box is pumped to by stock pump, then dehydration forming.
8. preparation method according to claim 1, it is characterised in that adhesive dosage is alumina silicate fibre and vermiculite gross weight
The 8% or 10% of amount.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023107586A3 (en) * | 2021-12-07 | 2023-10-26 | Cleanfiber Inc. | Cellulose precursor material and apparatus and method for field conversion of the precursor into cellulose insulation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108867156A (en) * | 2018-05-08 | 2018-11-23 | 净顶新材料科技无锡有限公司 | A kind of VOCs runner Novel composite fiber paper |
| CN109295811A (en) * | 2018-10-16 | 2019-02-01 | 马鞍山市康辉纸箱纸品有限公司 | A kind of preparation method of heat-insulation and heat-preservation carton |
| CN109879636A (en) * | 2018-10-17 | 2019-06-14 | 江苏腾利特种纤维科技有限公司 | A kind of production method of intumescent heat insulation support liner |
| CN110499663B (en) * | 2019-08-23 | 2022-03-04 | 山东鲁阳节能材料股份有限公司 | Expansion type fireproof blanket and preparation method thereof |
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| CN102898053A (en) * | 2012-10-17 | 2013-01-30 | 山东轻工业学院 | Modified adhesive and preparation method for alumina silicate fiber paperboard |
| CN103086661A (en) * | 2011-10-27 | 2013-05-08 | 深圳市爱思宝科技发展有限公司 | Thermal insulation and heat preservation slurry composition and thermal insulation and heat preservation plate containing the same |
| CN104446222A (en) * | 2014-12-15 | 2015-03-25 | 山东鲁阳股份有限公司 | Ceramic fiber plate and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103086661A (en) * | 2011-10-27 | 2013-05-08 | 深圳市爱思宝科技发展有限公司 | Thermal insulation and heat preservation slurry composition and thermal insulation and heat preservation plate containing the same |
| CN102898053A (en) * | 2012-10-17 | 2013-01-30 | 山东轻工业学院 | Modified adhesive and preparation method for alumina silicate fiber paperboard |
| CN104446222A (en) * | 2014-12-15 | 2015-03-25 | 山东鲁阳股份有限公司 | Ceramic fiber plate and preparation method thereof |
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| WO2023107586A3 (en) * | 2021-12-07 | 2023-10-26 | Cleanfiber Inc. | Cellulose precursor material and apparatus and method for field conversion of the precursor into cellulose insulation |
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