CN106739383A - A kind of preparation method of nano porous silicon dioxide aerogel cold insulation felt - Google Patents

A kind of preparation method of nano porous silicon dioxide aerogel cold insulation felt Download PDF

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Publication number
CN106739383A
CN106739383A CN201611089409.0A CN201611089409A CN106739383A CN 106739383 A CN106739383 A CN 106739383A CN 201611089409 A CN201611089409 A CN 201611089409A CN 106739383 A CN106739383 A CN 106739383A
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Prior art keywords
felt
cold insulation
silicon dioxide
porous silicon
nano porous
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CN201611089409.0A
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Chinese (zh)
Inventor
王天赋
彭战军
林冲
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Hubei Silicon Energy Saving Technology Co Ltd
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Hubei Silicon Energy Saving Technology Co Ltd
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Priority to CN201611089409.0A priority Critical patent/CN106739383A/en
Publication of CN106739383A publication Critical patent/CN106739383A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B30/00Compositions for artificial stone, not containing binders
    • C04B30/02Compositions for artificial stone, not containing binders containing fibrous materials
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/77Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
    • D06M11/79Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10Inorganic fibres
    • B32B2262/103Metal fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/30Properties of the layers or laminate having particular thermal properties
    • B32B2307/304Insulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/30Properties of the layers or laminate having particular thermal properties
    • B32B2307/306Resistant to heat
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/30Properties of the layers or laminate having particular thermal properties
    • B32B2307/306Resistant to heat
    • B32B2307/3065Flame resistant or retardant, fire resistant or retardant
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/50Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54Yield strength; Tensile strength
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/724Permeability to gases, adsorption
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20Resistance against chemical, physical or biological attack
    • C04B2111/28Fire resistance, i.e. materials resistant to accidental fires or high temperatures
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/02Natural fibres, other than mineral fibres
    • D06M2101/04Vegetal fibres
    • D06M2101/06Vegetal fibres cellulosic

Abstract

The invention discloses a kind of preparation method of nano porous silicon dioxide aerogel cold insulation felt, viscose rayon and glass fibre proportionally mixed textile into Nomex, with Nomex obtained in the previous step as base material, aerosil is filled in inside base material by the way of In-situ reaction, drying is modified to obtain aerosil felt.In the surface smear fireproof gum of complex heat-preservation felt obtained in the previous step, gum aluminium foil/PE composite membranes are attached at aerosil felt material surface by fireproof gum, that is, obtain the compound cold insulation felt of target product aeroge.Have service life long by nano porous silicon dioxide aerogel cold insulation felt obtained in the method, prevent fires, the characteristics of thermal conductivity factor is low and environmentally friendly.

Description

A kind of preparation method of nano porous silicon dioxide aerogel cold insulation felt
Technical field
The invention belongs to cold insulation material field, a kind of preparation of nano porous silicon dioxide aerogel cold insulation felt is specifically referred to Method.
Background technology
Aerosil is due to such as three-dimensional nanoparticles skeleton (2~5nm of skeleton particle), high-specific surface area The special microstructures such as (~1000m2/g), nanoscale hole hole (~20nm), low-density (0.003~0.15g/cm3), in heat The aspects such as, optics, electricity, acoustics all show the property of uniqueness.Wherein, in terms of calorifics, the nanoporous knot of aeroge Structure can effectively suppress the gentle body heat transferring of solid-state heat transfer, be that generally acknowledged thermal conductivity is minimum at present with excellent insulating characteristicses Solid-state material (being 0.01~0.03W/ (mK) under normal temperature).
Meanwhile, aerosil also has temperature in use higher, or even still has under 900 DEG C of high temperature preferable Porous network structure.Therefore, compared with conventional insulation material, the SiO2 aeroges composite insulation material with nano-pore can be used Lighter quality, smaller volume reach equivalent insulation effect.
The content of the invention
The problem of good insulation material, the present invention is needed to propose a kind of nano-stephanoporate silicon dioxide gas for deep cooling industry The preparation method of gel cold insulation felt, has service life by nano porous silicon dioxide aerogel cold insulation felt obtained in the method It is long, fire prevention, the characteristics of thermal conductivity factor is low and environmentally friendly.
The present invention is for the solution technical scheme that is used of above-mentioned technical problem:
A kind of preparation method of nano porous silicon dioxide aerogel cold insulation felt, comprises the following steps that:
Step 1, by viscose rayon silk, glass fiber blending in proportion, makes compound spiked felt in the way of acupuncture;
Step 2, by waterglass, hydrochloric acid, water hybrid reaction, stirring, the pH value of liquid to be mixed reacts when reaching 3.5~4.5 Complete;
Step 3, by way of In-situ reaction, the hydrogel that step 2 is obtained is uniformly dispersed in compound spiked felt, After winding, place, make the complete gel of colloid in felt;
Step 4, to dry and just obtain aerosil felt after being modified;
Step 5, the fireproof gum that mass parts are 1 and the water that mass parts are 1.5~2.5 are mixed at room temperature, and mixer is stirred Mix uniform, be applied to the surface of the aerosil felt that step 4 is obtained, when glue reaches 75%~85% and dries, use gum Aluminium foil/PE composite membranes are attached at the surface of felt;At room temperature after placement 8h-12h, you can winding packing, aeroge is combined cold insulation Felt is standby to be completed.
Preferably, Nomex described in step 1 is 3~4 by viscose rayon that mass parts are 6~7 silk and mass parts Glass fibre silk blend is formed.
Preferably, mixed liquor described in step 2 is by waterglass, the salt that mass parts are 1.2 that mass parts are 3.4~4 It is sour to be formed in mixed at room temperature with mass parts are 8.3~8.6 water.
Preferably, in making within 2~4 hours felt in the environment of being positioned over 60~70 DEG C after compound spiked felt winding in step 3 The complete gel of colloid.
One kind nano porous silicon dioxide aerogel cold insulation felt as obtained in the above method.
The beneficial effects of the invention are as follows:
1st, the Nomex of blending by a certain percentage, combines the advantage of viscose rayon and glass fibre so that composite acupuncture Heat resistance that felt had both possessed glass fibre is strong, corrosion resistance is good, high mechanical strength the characteristics of, while having the good of viscose rayon concurrently Flexibility and resistance to compression tensile property;
2nd, one side, two sides or six faces of aerogel blanket are covered on using gum aluminium foil/PE composite membranes, on the one hand can be every Exhausted steam is entered into inside aeroge, and the too low condensation vapor Cheng Binghui of temperature destroys the structure of aeroge, under causing heat-insulating property Drop;On the other hand it is also used as processing a kind of mode of the anti-dry linting of aerogel blanket.
Sum it up, material prepared by the inventive method has the features such as service life long, fire prevention, thermal insulation, environmental protection.
Specific embodiment
With reference to embodiment, the invention will be further described.
Embodiment 1:
First by viscose rayon silk, glass fiber with mass ratio be 7:3 ratio blending, is made multiple in the way of acupuncture Close Nomex.Secondly by waterglass, hydrochloric acid, water hybrid reaction, stirring, reaction is completed when the pH value of liquid to be mixed reaches 4.0;Water Glass, hydrochloric acid, the room temperature mass ratio 3.4 of water:1.2:8.3.Then by way of In-situ reaction, the hydrogel that will be obtained is equal Even is dispersed in compound spiked felt, and after winding, 4h in the environment of being positioned over 60 DEG C makes the complete gel of colloid in felt.It is dry Dry being modified obtain aerosil felt afterwards.Finally by fireproof gum and water with 1:1.5 ratio mixing, mixer stirring is equal It is even, be applied to the surface of aerosil felt, after glue reach 75% dry when (with hand press after, lifting hand can form glue Silk), the surface of felt is attached at gum aluminium foil/PE composite membranes.At room temperature after placement 8h, you can winding packing, aeroge is multiple Close the standby completion of cold insulation felt.
Embodiment 2:
First by viscose rayon silk, glass fiber with mass ratio be 7:3 ratio blending, is made multiple in the way of acupuncture Close Nomex.Secondly by waterglass, hydrochloric acid, water hybrid reaction, stirring, reaction is completed when the pH value of liquid to be mixed reaches 4.2;Water Glass, hydrochloric acid, the room temperature mass ratio 3.8 of water:1.2:8.5.Then by way of In-situ reaction, the hydrogel that will be obtained is equal Even is dispersed in compound spiked felt, and after winding, 3h in the environment of being positioned over 65 DEG C makes the complete gel of colloid in felt.It is dry Dry being modified obtain aerosil felt afterwards.Finally by fireproof gum and water with 1:2 ratio mixing, mixer stirring is equal It is even, be applied to the surface of aerosil felt, after glue reach 80% dry when (with hand press after, lifting hand can form glue Silk), the surface of felt is attached at gum aluminium foil/PE composite membranes.At room temperature after placement 10h, you can winding packing, aeroge is multiple Close the standby completion of cold insulation felt.
Embodiment 3:
First by viscose rayon silk, glass fiber with mass ratio be 6:4 ratio blending, is made multiple in the way of acupuncture Close Nomex.Secondly by waterglass, hydrochloric acid, water hybrid reaction, stirring, reaction is completed when the pH value of liquid to be mixed reaches 4.5;Water Glass, hydrochloric acid, the room temperature mass ratio 4 of water:1.2:8.6.Then by way of In-situ reaction, the hydrogel that will be obtained is uniform Be dispersed in compound spiked felt, after winding, 2h in the environment of being positioned over 70 DEG C makes the complete gel of colloid in felt.Dry Aerosil felt is obtained after modified.Finally by fireproof gum and water with 1:2.5 ratio mixing, mixer stirring is equal It is even, be applied to the surface of aerosil felt, after glue reach 85% dry when (with hand press after, lifting hand can form glue Silk), the surface of felt is attached at gum aluminium foil/PE composite membranes.At room temperature after placement 12h, you can winding packing, aeroge is multiple Close the standby completion of cold insulation felt.
The part not illustrated in specification is prior art or common knowledge.The present embodiment is merely to illustrate the invention, Rather than the scope of the present invention is limited, those skilled in the art are considered for modifications such as equivalent replacements for being made of the invention Fall into invention claims institute protection domain.

Claims (5)

1. a kind of preparation method of nano porous silicon dioxide aerogel cold insulation felt, it is characterised in that:The method specific steps are such as Under:
Step 1, by viscose rayon silk, glass fiber blending in proportion, makes compound spiked felt in the way of acupuncture;
Step 2, by waterglass, hydrochloric acid, water hybrid reaction, stirring, reaction is completed when the pH value of liquid to be mixed reaches 4~4.5;
Step 3, by way of In-situ reaction, the hydrogel that step 2 is obtained is uniformly dispersed in compound spiked felt, winding Afterwards, place, make the complete gel of colloid in felt;
Step 4, to dry and just obtain aerosil felt after being modified;
Step 5, the fireproof gum that mass parts are 1 and the water that mass parts are 1.5~2.5 are mixed at room temperature, and mixer stirring is equal It is even, be applied to the surface of the aerosil felt that step 4 is obtained, when glue reaches 75%~85% and dries, with gum aluminium foil/ PE composite membranes are attached at the surface of felt;At room temperature after placement 8h-12h, you can winding packing, the compound cold insulation felt of aeroge is standby Complete.
2. a kind of preparation method of nano porous silicon dioxide aerogel cold insulation felt according to claim 1, its feature exists In:Nomex described in step 1 is by the viscose rayon silk that mass parts are 6~7 and the glass fibre silk blend that mass parts are 3~4 Form.
3. a kind of preparation method of nano porous silicon dioxide aerogel cold insulation felt according to claim 1, its feature exists In:Mixed liquor described in step 2 is 8.3 by waterglass, the hydrochloric acid that mass parts are 1.2 and mass parts that mass parts are 3.4~4 ~8.6 water is formed in mixed at room temperature.
4. a kind of preparation method of nano porous silicon dioxide aerogel cold insulation felt according to claim 1, its feature exists In:In step 3 the complete gel of colloid that 2~4 hours make in felt in the environment of 60~70 DEG C is positioned over after compound spiked felt winding.
5. the preparation method system of a kind of nano porous silicon dioxide aerogel cold insulation felt according to 1~4 any claim A kind of standby nano porous silicon dioxide aerogel cold insulation felt.
CN201611089409.0A 2016-12-01 2016-12-01 A kind of preparation method of nano porous silicon dioxide aerogel cold insulation felt Pending CN106739383A (en)

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CN108046616A (en) * 2018-01-16 2018-05-18 天津摩根坤德高新科技发展有限公司 Doubling glass of aerogel-congtg and preparation method thereof
CN110093783A (en) * 2019-05-28 2019-08-06 深圳中凝科技有限公司 A kind of aeroge composite mortar felt and its preparation method and application
CN111851070A (en) * 2020-07-07 2020-10-30 巩义市泛锐熠辉复合材料有限公司 Heat-insulating flame-retardant sheet and preparation method thereof
CN112030545A (en) * 2020-08-31 2020-12-04 经纺环境科技(北京)有限公司 Heat-insulating felt and manufacturing method and production equipment thereof

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CN111851070A (en) * 2020-07-07 2020-10-30 巩义市泛锐熠辉复合材料有限公司 Heat-insulating flame-retardant sheet and preparation method thereof
CN112030545A (en) * 2020-08-31 2020-12-04 经纺环境科技(北京)有限公司 Heat-insulating felt and manufacturing method and production equipment thereof

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Application publication date: 20170531