CN108928052A - One kind flexible gasket resistant to high temperature and its preparation method and application - Google Patents
One kind flexible gasket resistant to high temperature and its preparation method and application Download PDFInfo
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- CN108928052A CN108928052A CN201810529395.2A CN201810529395A CN108928052A CN 108928052 A CN108928052 A CN 108928052A CN 201810529395 A CN201810529395 A CN 201810529395A CN 108928052 A CN108928052 A CN 108928052A
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- fiber cloth
- bonding agent
- agent slurry
- gasket
- refractory fiber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M17/00—Producing multi-layer textile fabrics
- D06M17/04—Producing multi-layer textile fabrics by applying synthetic resins as adhesives
- D06M17/10—Polyurethanes polyurea
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
-
- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Gasket Seals (AREA)
- Sealing Material Composition (AREA)
Abstract
The present invention provides a kind of flexible gaskets resistant to high temperature and its preparation method and application.The gasket includes refractory fiber cloth and bonding agent slurry, and the refractory fiber cloth is overlapped mutually, and the bonding agent slurry is between adjacent refractory fiber cloth and the lateral surface of outermost layer refractory fiber cloth；The bonding agent slurry includes following components in parts by weight：50~70 parts of aqueous polyurethane, 10~35 parts of epoxy resin latex, 10~15 parts of filler, 1~5 part of Aluminum sol, 0.5~1 part of dispersing agent.The preparation method includes：1) bonding agent slurry is prepared；2) step 1) the bonding agent slurry is compounded on the face that refractory fiber cloth needs to bond, then the obtained refractory fiber cloth for being compounded with bonding agent slurry is overlapped, last machine-shaping obtains the gasket.Flexible gasket resistant to high temperature provided by the invention can be used for a long time in the high temperature environment.
Description
Technical field
The invention belongs to inorganic non-metal composite material fields, and in particular to a kind of flexible gasket resistant to high temperature and its
Preparation method and purposes.
Background technique
In recent years, with the continuous development of the industries such as petrochemical industry, metallurgy, environmental protection, high-temperature dusty gas is separated
The high temperature high voltage resistant performance of device proposes increasingly higher demands, and can elevated-temperature seal technology be always to influence device when long
Between continuous operation an important factor for one of.In industrial processes, use environment temperature and sealing material are not inconsistent or in heat
Under overload, it can all accelerate aging, embrittlement of sealing material etc., the sealing technique of worst hot case lower pipe fitting seems especially heavy
It wants, this also proposes more stringent requirement to the heat resistance of sealing material and sealing performance.
It is more mature for 600 DEG C of flexible sealing techniques below, but be used for a long time under 700~1000 DEG C of high temperature
The flexible sealing material of high temperature resistant exploitation it is also more deficient.
CN106188897A discloses a kind of high temperature resistant EP rubbers gasket seal and its preparation method and application, the program
In, high temperature resistant EP rubbers gasket seal is by bibasic ethylene propylene rubber, furnace black, spray carbon black, zinc oxide, aluminium oxide, vulcanization
The composition such as agent, assistant crosslinking agent and anti-aging agent, wherein using fully saturated bibasic ethylene propylene rubber as rubber raw materials.
CN204852334U discloses a kind of elevated-temperature seal Graphite pad, which includes metallic inner and metal
Outer ring, is embedded with graphite annulus between the metallic inner and metal outer ring, the thickness of the graphite annulus is higher than metallic inner and gold
Belong to the thickness of outer ring, the metallic inner is arc concave shape structure, and the metal outer ring is the outer male structure of arc, the graphite annulus
Equipped with the arc convex being bonded with metallic inner and metal outer ring.
CN202684067U discloses a kind of refractory fibre gasket, which uses refractory fibre material
Matter, surface have excellent elasticity, are suitble to continually changing stopper mouth of a river shape, the blocking that can be effectively carried out the stopper mouth of a river is close
Envelope.
But above three scheme can not be used for a long time under 700~1000 DEG C of high temperature.
Elevated-temperature seal in high-temperature dust-containing flue gas purification techniques between heterogeneous pipe fitting is carried out usually using refractory fiber cotton, felt
Filling sealing, but due to cellucotton, felt quality is soft, intensity is low, poor continuity so that being prone to brokenly during the installation process
Damage, causes unbalance stress, poor sealing effect.Under prolonged hot operation and the mechanical oscillation of blowback process, due to material
Temperature tolerance it is poor, cause aging serious, easily occur gas leakage, have very big unfavorable shadow to high-temperature dust-containing flue gas purification efficiency
It rings.In order to solve this technical problem, it is badly in need of developing a kind of flexible sealing material of high temperature resistant of high intensity.
Summary of the invention
For sealing material existing in the prior art at high temperature easy dusting, sealing effect is bad, mechanical strength is low, the longevity
The problems such as shorter is ordered, the purpose of the present invention is to provide a kind of flexible gaskets resistant to high temperature and its preparation method and application.
Flexible gasket resistant to high temperature provided by the invention can be used for a long time in the high temperature environment.
In order to achieve the above object, the present invention uses following technical scheme：
In a first aspect, the present invention provides a kind of gasket, the gasket includes refractory fiber cloth and bonding agent slurry, institute
It states refractory fiber cloth to be overlapped mutually, the bonding agent slurry is between adjacent refractory fiber cloth and outermost layer refractory fibre
The lateral surface of cloth；
The bonding agent slurry includes following components in parts by weight：
In the present invention, in parts by weight, the parts by weight of aqueous polyurethane are 50~70 parts to the bonding agent slurry, such as
50 parts, 52 parts, 55 parts, 57 parts, 60 parts, 62 parts, 65 parts, 68 parts or 70 parts etc., it is not limited to cited numerical value, the number
It is equally applicable to be worth other unlisted numerical value in range.
The parts by weight of epoxy resin latex are 10~35 parts, such as 10 parts, 13 parts, 16 parts, 18 parts, 20 parts, 22 parts, 25
Part, 28 parts, 30 parts, 33 parts or 35 parts etc., it is not limited to cited numerical value, other unlisted numbers in the numberical range
It is worth equally applicable.
The parts by weight of filler are 10~15 parts, such as 10 parts, 11 parts, 12 parts, 13 parts, 14 parts or 15 parts etc., but not
It is only limitted to cited numerical value, other unlisted numerical value are equally applicable in the numberical range.
The parts by weight of Aluminum sol are 1~5 part, such as 1 part, 2 parts, 3 parts, 4 parts or 5 parts etc., it is not limited to listed
The numerical value of act, other interior unlisted numerical value of the numberical range are equally applicable.
The parts by weight of dispersing agent are 0.5~1 part, such as 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part or 1 part etc.,
It is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable.
In gasket provided by the invention, by the synergistic effect of bonding agent slurry and refractory fiber cloth, works in coordination, make
The overall performance for obtaining gasket is been significantly enhanced.Specifically, the present invention by by aqueous polyurethane, epoxy resin latex,
Vermiculite granule, Short Mullite Fibre, zirconium oxide staple fiber, Aluminum sol, dispersant form bonding agent slurry, are guaranteeing to glue
Property and while the feature of environmental protection, effectively improve the mechanical strength of material, intensity is high, non-sclerous under room temperature, it is flexible under high temperature,
Not brittle failure, the high temperature that can preferably meet material are flexible；By the MULTILAYER COMPOSITE of refractory fiber cloth, there is material high mechanical
Intensity, meanwhile, multi-layer fiber can be compensated and excellent under pressure and thermal stress from suffered stiff points stress is adjusted by gap
Good corrosion resistance improves the sealing performance of material.
The flexible gasket of high temperature resistant in the present invention has intensity height, thickness equal compared with common refractory fiber cotton, felt
The even, superior functions such as continuity is good, are able to bear caused axial vibration when pulse backblowing deashing, and can buffer ceramic membrane with
Thermal stress effect between steel plate, provides and is reliably fixedly connected and sealing performance, and its own also has manufacture craft simple,
The advantages such as low in cost.Importantly, the type of composite product has diversified forms, various shape, ruler can be made
Very little, thickness etc., with pyroconductivity is low, do not burn, strength-weight ratio is high, chemical stability is good, it is preferable soft to keep under high temperature
The features such as elastic.Flexible gasket resistant to high temperature provided by the invention can be used for a long time under 700-1000 DEG C of environment.
It is used as currently preferred technical solution below, but not as the limitation to technical solution provided by the invention, leads to
Following preferred technical solution is crossed, can preferably reach and realize technical purpose and beneficial effect of the invention.
In the present invention, using refractory fiber cloth as the substrate of gasket.
As currently preferred technical solution, in the gasket, refractory fiber cloth includes high silica fiber cloth, quartz
In fiber cloth or alumina silicate fibre cloth any one or at least two combination.The high silica fiber cloth is high-purity silicon oxide
The abbreviation of noncrystal continuous fiber cloth, silica content 96-98%.
Preferably, in the gasket, the weaving manner of refractory fiber cloth includes but is not limited in plain weave, twill or satin face
Any one or at least two combination.It is not limited to the above-mentioned weaving manner enumerated, other can reach same effect
The common weaving manner in this field can also be used in the present invention.
As currently preferred technical solution, in the gasket, bonding agent slurry includes with the following group in parts by weight
Point：
Preferably, in the gasket, bonding agent slurry includes following components in parts by weight：
Preferably, the filler includes any one in vermiculite granule, Short Mullite Fibre or zirconium oxide staple fiber or extremely
Few two kinds of combination.It is typical but be non-limiting combination and have：The combination of vermiculite granule and Short Mullite Fibre, the short fibre of mullite
The combination of peacekeeping zirconium oxide staple fiber, the combination of vermiculite granule and zirconium oxide staple fiber, vermiculite granule, Short Mullite Fibre and oxygen
Change the combination of zirconium staple fiber.In the present invention, the length of the staple fiber is 100-500 μm.
The present invention adds vermiculite granule can effectively be increased the heat resistance of material, be expanded close by Dispersed precipitate
The use temperature range of packing；The present invention adds Short Mullite Fibre, zirconium oxide staple fiber, and by random arrangement, direction is different
Ground is dispersed between scrim cloth, plays certain supporting role, to improve the resilience of material.
Preferably, the dispersing agent includes dodecyl benzene sulfonate, alkyl diphenyl ether monosulfonate, alkyl diphenyl ether pair
In sulfonate, alcohol ether sulfonate or phenolic ether sulfonate any one or at least two combination.It is not limited to above-mentioned point
Powder, the common dispersing agent that other this fields can achieve effect same can also be used for the present invention, for example, other kinds of yin from
Sub- surfactant.
Second aspect, the present invention provide a kind of preparation method of gasket as described in relation to the first aspect, the method includes with
Lower step：
(1) bonding agent slurry is prepared；
(2) step (1) the bonding agent slurry is compounded on the face that refractory fiber cloth needs to bond, then answered what is obtained
The refractory fiber cloth that conjunction finishes mix paste is overlapped, and last machine-shaping obtains the gasket.
Preparation method products material provided by the invention is easy to get, is environmentally friendly, and preparation process is simple, is suitable for industrial applications, leads to
The superposition number of plies for crossing control refractory fiber cloth can control thickness, by controlling forming mold, that is, controllable shape.
As currently preferred technical solution, in step (1), the bonding agent slurry for preparing includes the following steps：
By the aqueous polyurethane of proportional quantity, epoxy resin latex, Aluminum sol and dispersant, mixed emulsion is obtained, then
The filler of proportional quantity is added into the mixed emulsion, obtains the bonding agent slurry after being dispersed.
As currently preferred technical solution, the dispersing agent includes but is not limited to dodecyl benzene sulfonate, alkyl
Any one in diphenyl ether monosulfonate, p alkylphenylaceticacid, alcohol ether sulfonate or phenolic ether sulfonate or at least two
The combination of kind.
Preferably, the mixed method includes stirring.
Preferably, the filler includes any one in vermiculite granule, Short Mullite Fibre or zirconium oxide staple fiber or extremely
Few two kinds of combination.It is typical but be non-limiting combination and have：The combination of vermiculite granule and Short Mullite Fibre, the short fibre of mullite
The combination of peacekeeping zirconium oxide staple fiber, the combination of vermiculite granule and zirconium oxide staple fiber, vermiculite granule, Short Mullite Fibre and oxygen
Change the combination of zirconium staple fiber.In the present invention, the length of the staple fiber is 100-500 μm.
Preferably, the method for the dispersion includes any one in ultrasonic disperse, stirring or ball milling or at least two
Combination.It is typical but be non-limiting combination and have：The combination of ultrasonic disperse and stirring, the combination of stirring and ball milling, ultrasonic disperse
With the combination of ball milling etc..
As currently preferred technical solution, in step (2), the refractory fiber cloth includes high silica fiber cloth, stone
In English fiber cloth or alumina silicate fibre cloth any one or at least two combination.The high silica fiber cloth is high pure zirconia
The abbreviation of amorphized silicon body continuous fiber cloth, silica content 96-98%.
Preferably, in step (2), step (1) the bonding agent slurry is compounded in the face that refractory fiber cloth needs to bond
On method be coated or impregnated with.
Preferably, in step (2), refractory fiber cloth need the amount of bonding agent slurry compound on the face that bonds be 0.01~
0.5g/cm2, such as 0.01g/cm2、0.05g/cm2、0.1g/cm2、0.2g/cm2、0.3g/cm2、0.4g/cm2Or 0.5g/cm2
Deng it is not limited to cited numerical value, other unlisted numerical value are equally applicable in the numberical range.
Preferably, in step (2), the method for the superposition is that will be compounded with the refractory fiber cloth multi-laminate of bonding agent slurry
In addition the refractory fiber cloth single layer drying multilayer pressurization superposition again later of bonding agent slurry is dried or will be compounded with to repressurization after.This
In invention, the multilayer refers to >=2 layers.
Preferably, the pressure of the pressurization be 1~10MPa, such as 1MPa, 2MPa, 3MPa, 4MPa, 5MPa, 6MPa,
7MPa, 8MPa, 9MPa or 10MPa etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range
It is equally applicable.
Preferably, in step (2), the method for the machine-shaping is shape by die-cutting.
As currently preferred technical solution, in step (2), the refractory fiber cloth after pretreatment again with knot
Mix paste is compound.
Preferably, the pretreatment is that destarch is handled.
Preferably, the method for the destarch processing includes drying after ultrasonic vibration in ethanol and/or 600 DEG C of heating.This
In invention, refer to can be to dry after ultrasonic vibration in ethanol for drying and/or 600 DEG C of heating after the ultrasonic vibration in ethanol
It is dry, or 600 DEG C of heating can also be the combination of drying and 600 DEG C of heating after ultrasonic vibration in ethanol.
As the further preferred technical solution of preparation method of the present invention, the described method comprises the following steps：
(1) aqueous polyurethane of proportional quantity, epoxy resin latex, Aluminum sol and dispersing agent are stirred, are mixed
Lotion, then into the mixed emulsion be added proportional quantity filler, be dispersed after obtain the bonding agent slurry；
(2) step (1) the bonding agent slurry method being coated or impregnated with is compounded in the processed fire resisting fibre of destarch
On the face that Wei Bu needs to bond, then the obtained refractory fiber cloth for being compounded with bonding agent slurry is overlapped, is finally die-cut to
Type obtains the gasket；
Wherein, the amount of compound bonding agent slurry is 0.01~0.5g/cm on the face that refractory fiber cloth needs to bond2, institute
The method for stating superposition is that repressurization after the refractory fiber cloth multiple-layer stacked for being compounded with bonding agent slurry is dried or will be compounded with
Multilayer pressurization superposition again, the pressure of the pressurization are 1~10MPa after the refractory fiber cloth single layer drying of bonding agent slurry.
The third aspect, the present invention provide a kind of purposes of gasket as described in relation to the first aspect, and the gasket is for sealing
Junction between the heterogeneous pipe fitting of rigidity.It is contour that gasket provided by the invention can be used for petrochemical industry, metallurgy, building materials, electric power
Warm pipe fitting connects occasion, is particularly suitable for contact sealing surface of the ceramic membrane with steel plate, can under high temperature junction pipe fitting it is swollen
It bulges to buffer function well, and sealing effect is good.
Compared with prior art, the invention has the advantages that：
(1) present invention is by forming knot for aqueous polyurethane, epoxy resin latex, filler, Aluminum sol, dispersant
Mix paste guaranteeing viscosity and while the feature of environmental protection, effectively improving the mechanical strength of gasket, under room temperature intensity it is high,
Non-sclerous, flexible, not brittle failure under high temperature, the high temperature that can preferably meet material is flexible；
(2) present invention makes material have high mechanical strength by the MULTILAYER COMPOSITE of refractory fiber cloth, meanwhile, multi-layer fiber
It, by gap compensation and excellent corrosion resistance, can be improved under pressure and thermal stress from suffered stiff points stress is adjusted
The sealing performance of material；
(3) present invention addition vermiculite granule can effectively increase the heat resistance of material by Dispersed precipitate, expand
The use temperature range of gasket；
(4) present invention addition Short Mullite Fibre, zirconium oxide staple fiber, by random arrangement, each strange land in direction is dispersed in
Between scrim cloth, certain supporting role is played, to improve the resilience of material；
(5) flexible gasket resistant to high temperature provided by the invention can be used for a long time under 700-1000 DEG C of environment, tool
Have it is compact flexible with sealing surface, for face sealing and sealing surface it is larger, therefore sealing effect is good, to the heterogeneous pipe fitting of rigidity
Flexible sealing and buffer function are played in junction, and good integrity is not adhere on tube surface, can clear up, disassembling, assembling and replacing is convenient；
(6) flexible sealing cushion raw material resistant to high temperature provided by the invention is easy to get, is environmentally friendly, and preparation process is simple, is suitable for work
Industry application.
Detailed description of the invention
Fig. 1 is section (number of plies is superimposed shown in figure without being limited thereto) schematic diagram of gasket prepared by the embodiment of the present invention 1,
Middle 1- refractory fiber cloth, 2- bonding agent slurry；
Fig. 2 is the overall structure diagram of O-ring shape gasket prepared by the embodiment of the present invention 1.
Specific embodiment
In order to better illustrate the present invention, it is easy to understand technical solution of the present invention, below further specifically to the present invention
It is bright.But following embodiments is only simple example of the invention, does not represent or limit the scope of the present invention, this
Invention protection scope is subject to claims.
The following are typical but non-limiting embodiments of the invention：
Embodiment 1
Gasket is prepared according to the following steps：
The component and proportion of the bonding agent slurry of gasket are selected as in the present embodiment：52 parts of aqueous polyurethane, 30 parts
Epoxy resin latex, 13 parts of filler, 5 parts of Aluminum sol, additional 0.8 part of dispersing agent.
(1) high-speed mixer is added in aqueous polyurethane, epoxy resin latex, Aluminum sol and dispersing agent and stirs 20min, filled
Divide after mixing, 13 parts of filler is added.The group of filler becomes vermiculite granule and Short Mullite Fibre presses 1:1 mass ratio
Addition.Stable bonding agent slurry is formed after ball milling 1h.The dispersing agent is neopelex.
(2) it uses plain weave high silica fiber cloth of the purity higher than 96% as substrate, pre-processes 30min through 600 DEG C of high temperature
Afterwards, bonding agent slurry is uniformly coated on fiber cloth upper and lower surface using automatic glue spreader, coating weight is about 0.1g/cm2, through 70
DEG C infrared baking 1h, after the large quantity of moisture that scatters and disappears, multiple-layer stacked, the composite molding under 10MPa pressure.Finally, by cross cutting, i.e.,
Obtain the flexible gasket of O shape high temperature resistant of interior diameter 7cm, overall diameter 9cm.
Gasket manufactured in the present embodiment can be used for the sealing of refractory ceramics membrane filter tube, be mounted on stephanoporate steel plate and ceramics
Between screen pipe, under clamping force at the top of ceramic tube, gasket is squeezed generation elastic deformation, so that filled high-temperature is made pottery
Gap between porcelain tube and stephanoporate steel plate achievees the effect that effectively to seal.
The section of gasket manufactured in the present embodiment (is superimposed the number of plies) as shown in Figure 1 shown in figure without being limited thereto, gasket by
Refractory fiber cloth 1 and bonding agent slurry 2 form, and the refractory fiber cloth 1 is overlapped mutually, and the bonding agent slurry 2 is located at adjacent
Refractory fiber cloth 1 between and outermost layer refractory fiber cloth 1 lateral surface.
The overall structure diagram of gasket manufactured in the present embodiment is as shown in Fig. 2, be O-ring shape.
Test result shows that gasket manufactured in the present embodiment has the flexibility combined closely with sealing surface, plays soft
The gentle blow stress effect of elastic packing, can be used for a long time under 700-1000 DEG C of environment.It is tested by long-time heatproof, discovery
Its sealing effect at high temperature is good, globality and intensity are high, is not adhere on tube surface, can quickly clean, disassembling, assembling and replacing
It is convenient.It can be used for the ceramic membrane filter seal of tube of high-temperature flue gas purification, such as steel mill's gas cleaning industrial high temperature gas cleaning
Equipment.
The gasket of five layers of superposition manufactured in the present embodiment uses at 1000 DEG C for a long time, and tensile strength is maintained at
35.9MPa or so.
Embodiment 2
Flexible gasket resistant to high temperature is prepared according to the following steps：
The bonding agent pulp components of sealing material and proportion are selected as in the present embodiment：68 parts of aqueous polyurethane, 16 parts
Epoxy resin latex, 15 parts of filler, 1 part of Aluminum sol, additional 1 part of dispersing agent.
(1) high-speed mixer is added in aqueous polyurethane, epoxy resin latex, Aluminum sol and dispersing agent and stirs 20min, mixed
After closing uniformly, 15 parts of filler is added.The group of filler becomes vermiculite granule, Short Mullite Fibre and zirconium oxide staple fiber and presses 2:1:
1 mass ratio addition.Stable bonding agent slurry is formed after stirring.The mixing speed control is in 800 turns/min, stirring
50min.The dispersing agent is alkyl diphenyl ether sodium monosulfate.
(2) use satin face high silica fiber cloth of the purity higher than 96% as substrate, through EtOH Sonicate concussion, dry and
After 600 DEG C of high temperature pretreatments, bonding agent slurry uniform ground is coated on fiber cloth upper and lower surface using doctor kiss coater, coating weight is about
For 0.3g/cm2, multiple-layer stacked, under 1MPa pressure, 50 DEG C of drying 10h are carried out by the identical face of cloth cover texture.Finally, passing through
Cross cutting obtains the flexible gasket of high temperature resistant.
Referring to embodiment 1, (the specific superposition number of plies is not limited to the layer of embodiment 1 in the section of gasket manufactured in the present embodiment
Number), gasket is made of refractory fiber cloth 1 and bonding agent slurry 2, and the refractory fiber cloth 1 is overlapped mutually, the bonding agent slurry
Material 2 is between adjacent refractory fiber cloth 1 and the lateral surface of outermost layer refractory fiber cloth 1.
Test result shows that gasket manufactured in the present embodiment has the flexibility combined closely with sealing surface, plays soft
The gentle blow stress effect of elastic packing, can be used for a long time under 700-1000 DEG C of environment.It is tested by long-time heatproof, discovery
Its sealing effect at high temperature is good, globality and intensity are high, is not adhere on tube surface, can quickly clean, disassembling, assembling and replacing
It is convenient.It can be used for the ceramic membrane filter seal of tube of high-temperature flue gas purification, such as steel mill's gas cleaning industrial high temperature gas cleaning
Equipment.
20h is used continuously in the gasket of five layers of superposition manufactured in the present embodiment at 1000 DEG C, and tensile strength is maintained at
25.2MPa or so, intensity do not decline.
Embodiment 3
Flexible gasket resistant to high temperature is prepared according to the following steps：
The bonding agent pulp components and proportion of the present embodiment high temperature gasket are selected as：65 parts of aqueous polyurethane, 22
Epoxy resin latex, 10 parts of the filler, 3 parts of Aluminum sol of part, additional 0.5 part of dispersing agent.
(1) high-speed mixer is added in aqueous polyurethane, epoxy resin latex, Aluminum sol and dispersing agent and stirs 50min, stirred
After mixing uniformly, 10 parts of filler is added.The group of filler becomes vermiculite granule and Short Mullite Fibre presses 2:1 mass ratio adds
Add.Stable bonding agent slurry is formed after mixing.The dispersing agent is neopelex.
(2) fiber cloth is impregnated in above-mentioned slurry as substrate by the plain weave alumina silicate fibre cloth for using stainless steel wire to enhance
Afterwards, three layers of superposition, under 2MPa pressure, 60 DEG C of drying 5h.Finally, obtaining the flexible gasket of high temperature resistant by cross cutting.
Referring to embodiment 1, (the specific superposition number of plies is not limited to the layer of embodiment 1 in the section of gasket manufactured in the present embodiment
Number), gasket is made of refractory fiber cloth 1 and bonding agent slurry 2, and the refractory fiber cloth 1 is overlapped mutually, the bonding agent slurry
Material 2 is between adjacent refractory fiber cloth 1 and the lateral surface of outermost layer refractory fiber cloth 1.
Test result shows that gasket manufactured in the present embodiment has the flexibility combined closely with sealing surface, plays soft
The gentle blow stress effect of elastic packing, can be used for a long time under 700 DEG C of environment.By long-time heatproof test, find its
Sealing effect under high temperature is good, globality and intensity are high, is not adhere on tube surface, can quickly clean, disassembling, assembling and replacing is convenient.
It can be used for the ceramic membrane filter seal of tube of high-temperature flue gas purification, such as steel mill's gas cleaning industrial high temperature flue gas purifying equipment.
The gasket of three layers of superposition manufactured in the present embodiment uses for a long time at 700 DEG C, and tensile strength is maintained at
27.5MPa or so.
Embodiment 4
Referring to embodiment 1, difference is the specific steps of the present embodiment, in the component of the bonding agent slurry of gasket, water
Property polyurethane parts by weight be 50 parts, the parts by weight of epoxy resin latex are 35 parts；In step (2), coating weight is about
0.01g/cm2。
Referring to embodiment 1, (the specific superposition number of plies is not limited to the layer of embodiment 1 in the section of gasket manufactured in the present embodiment
Number), gasket is made of refractory fiber cloth 1 and bonding agent slurry 2, and the refractory fiber cloth 1 is overlapped mutually, the bonding agent slurry
Material 2 is between adjacent refractory fiber cloth 1 and the lateral surface of outermost layer refractory fiber cloth 1.
Test result shows that gasket manufactured in the present embodiment has the flexibility combined closely with sealing surface, plays soft
The gentle blow stress effect of elastic packing, can be used for a long time under 700-1000 DEG C of environment.It is tested by long-time heatproof, discovery
Its sealing effect at high temperature is good, globality and intensity are high, is not adhere on tube surface, can quickly clean, disassembling, assembling and replacing
It is convenient.It can be used for the ceramic membrane filter seal of tube of high-temperature flue gas purification, such as steel mill's gas cleaning industrial high temperature gas cleaning
Equipment.
It is used at long-term 900 DEG C of gasket of five layers of superposition manufactured in the present embodiment, tensile strength is maintained at the left side 38.8MPa
It is right.
Embodiment 5
Referring to embodiment 1, difference is the specific steps of the present embodiment, in the component of the bonding agent slurry of gasket, water
Property polyurethane parts by weight be 70 parts, the parts by weight of epoxy resin latex are 10 parts；In step (2), coating weight is about
0.5g/cm2。
Referring to embodiment 1, (the specific superposition number of plies is not limited to the layer of embodiment 1 in the section of gasket manufactured in the present embodiment
Number), gasket is made of refractory fiber cloth 1 and bonding agent slurry 2, and the refractory fiber cloth 1 is overlapped mutually, the bonding agent slurry
Material 2 is between adjacent refractory fiber cloth 1 and the lateral surface of outermost layer refractory fiber cloth 1.
Test result shows that gasket manufactured in the present embodiment has the flexibility combined closely with sealing surface, plays soft
The gentle blow stress effect of elastic packing, can be used for a long time under 700-1000 DEG C of environment.It is tested by long-time heatproof, discovery
Its sealing effect at high temperature is good, globality and intensity are high, is not adhere on tube surface, can quickly clean, disassembling, assembling and replacing
It is convenient.It can be used for the ceramic membrane filter seal of tube of high-temperature flue gas purification, such as steel mill's gas cleaning industrial high temperature gas cleaning
Equipment.
It is used at long-term 1000 DEG C of gasket of five layers of superposition manufactured in the present embodiment, tensile strength is maintained at 34.3MPa
Left and right.
Comparative example 1
Referring to embodiment 1, difference is the specific steps of this comparative example, is added without filler in bonding agent slurry.
The result of this comparative example is the gasket prepared because not adding filler, and slurry viscosity is smaller, after multiple-layer stacked
Drying time is longer, and edge of materials moisture dissipation speed is be easy to cause to differ greatly compared with moisture dissipation speed in the middle part of material, leads
Cause Material shrinkage uneven, the adverse consequences such as roughness descent.
Based on the above embodiments with comparative example it is found that the spy that gasket provided by the invention has high temperature resistant, flexibility strong
Point can obtain that thickness is controllable by MULTILAYER COMPOSITE, the three-dimensional seal material of shape-plastic, play the heterogeneous pipe fitting connection of rigidity
The flexible sealing at place acts on.Meanwhile also have manufacture craft simple, the characteristics of low energy consumption, can be used for petrochemical industry, metallurgy,
The high-temperature pipe fittings such as building materials, electric power connect occasion.Comparative example does not use the solution of the present invention, thus can not obtain effect of the invention
Fruit.
The Applicant declares that the foregoing is merely a specific embodiment of the invention, but protection scope of the present invention not office
It is limited to this, it should be clear to those skilled in the art, any to belong to those skilled in the art and take off in the present invention
In the technical scope of dew, any changes or substitutions that can be easily thought of, and all of which fall within the scope of protection and disclosure of the present invention.
Claims (10)
1. a kind of gasket, which is characterized in that the gasket includes refractory fiber cloth (1) and bonding agent slurry (2), described resistance to
Fiery fiber cloth (1) is overlapped mutually, and the bonding agent slurry (2) is between adjacent refractory fiber cloth (1) and outermost layer is resistance to
The lateral surface of fiery fiber cloth (1)；
The bonding agent slurry (2) includes following components in parts by weight：
2. gasket according to claim 1, which is characterized in that in the gasket, refractory fiber cloth (1) includes high silicon
In oxygen fiber cloth, quartz fiber cloth or alumina silicate fibre cloth any one or at least two combination；
Preferably, in the gasket, the weaving manner of refractory fiber cloth (1) includes any one in plain weave, twill or satin face
Kind or at least two combination.
3. gasket according to claim 1 or 2, which is characterized in that in the gasket, bonding agent slurry (2) is with weight
Measuring part meter includes following components：
Preferably, in the gasket, bonding agent slurry (2) includes following components in parts by weight：
Preferably, the filler includes any one in vermiculite granule, Short Mullite Fibre or zirconium oxide staple fiber or at least two
The combination of kind；
Preferably, the dispersing agent includes dodecyl benzene sulfonate, alkyl diphenyl ether monosulfonate, alkyl diphenyl ether disulfonic acid
In salt, alcohol ether sulfonate or phenolic ether sulfonate any one or at least two combination.
4. the preparation method of gasket as described in any one of claims 1-3, which is characterized in that the method includes following steps
Suddenly：
(1) bonding agent slurry (2) are prepared；
(2) step (1) the bonding agent slurry (2) is compounded in refractory fiber cloth (1) to need on the face that bonds, then to obtaining
The refractory fiber cloth (1) for being compounded with bonding agent slurry (2) is overlapped, and last machine-shaping obtains the gasket.
5. the preparation method according to claim 4, which is characterized in that described to prepare bonding agent slurry (2) in step (1)
Include the following steps：
By the aqueous polyurethane of proportional quantity, epoxy resin latex, Aluminum sol and dispersant, mixed emulsion is obtained, then to institute
The filler that proportional quantity is added in mixed emulsion is stated, obtains the bonding agent slurry (2) after being dispersed.
6. preparation method according to claim 5, which is characterized in that the dispersing agent include dodecyl benzene sulfonate,
In alkyl diphenyl ether monosulfonate, p alkylphenylaceticacid, alcohol ether sulfonate or phenolic ether sulfonate any one or extremely
Few two kinds of combination；
Preferably, the mixed method includes stirring；
Preferably, the filler includes any one in vermiculite granule, Short Mullite Fibre or zirconium oxide staple fiber or at least two
The combination of kind；
Preferably, the method for the dispersion include in ultrasonic disperse, stirring or ball milling any one or at least two combination.
7. according to the described in any item preparation methods of claim 4-6, which is characterized in that refractory fiber cloth described in step (2)
(1) include in high silica fiber cloth, quartz fiber cloth or alumina silicate fibre cloth any one or at least two combination；
Preferably, in step (2), step (1) the bonding agent slurry (2) is compounded in what refractory fiber cloth (1) needs bonded
Method on face is to be coated or impregnated with；
Preferably, in step (2), the amount of compound bonding agent slurry (2) is 0.01 on the face that refractory fiber cloth (1) needs to bond
~0.5g/cm2；
Preferably, in step (2), the method for the superposition is that will be compounded with refractory fiber cloth (1) multilayer of bonding agent slurry (2)
Repressurization is dried or by multilayer adds again after refractory fiber cloth (1) single layer for being compounded with bonding agent slurry (2) drying after superposition
Laminated adds；
Preferably, the pressure of the pressurization is 1~10MPa；
Preferably, in step (2), the method for the machine-shaping is shape by die-cutting.
8. according to the described in any item preparation methods of claim 4-7, which is characterized in that in step (2), the refractory fiber cloth
(1) compound with bonding agent slurry (2) again after pretreatment；
Preferably, the pretreatment is that destarch is handled；
Preferably, the method for the destarch processing includes drying after ultrasonic vibration in ethanol and/or 600 DEG C of heating.
9. according to the described in any item preparation methods of claim 4-8, which is characterized in that the described method comprises the following steps：
(1) aqueous polyurethane of proportional quantity, epoxy resin latex, Aluminum sol and dispersing agent are stirred, obtain mixed emulsion,
The filler of proportional quantity is added into the mixed emulsion again, obtains the bonding agent slurry (2) after being dispersed；
(2) step (1) the bonding agent slurry (2) is compounded in the processed refractory fibre of destarch with the method being coated or impregnated with
On the face that cloth (1) needs to bond, then the obtained refractory fiber cloth (1) for being compounded with bonding agent slurry (2) is overlapped, finally
Shape by die-cutting obtains the gasket；
Wherein, the amount of compound bonding agent slurry (2) is 0.01~0.5g/cm on the face that refractory fiber cloth (1) needs to bond2, institute
The method for stating superposition is repressurization drying or general after refractory fiber cloth (1) multiple-layer stacked that will be compounded with bonding agent slurry (2)
Refractory fiber cloth (1) single layer for being compounded with bonding agent slurry (2) dries later again multilayer pressurization superposition, and the pressure of the pressurization is
1~10MPa.
10. the purposes of gasket as described in any one of claims 1-3, which is characterized in that the gasket is for sealing just
Junction between the heterogeneous pipe fitting of property.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810529395.2A CN108928052B (en) | 2018-05-29 | 2018-05-29 | High-temperature-resistant flexible elastic sealing gasket and preparation method and application thereof |
| PCT/CN2018/091743 WO2019227535A1 (en) | 2018-05-29 | 2018-06-19 | High-temperature resistant, soft and flexible sealing gasket, preparation method thereof, and use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810529395.2A CN108928052B (en) | 2018-05-29 | 2018-05-29 | High-temperature-resistant flexible elastic sealing gasket and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108928052A true CN108928052A (en) | 2018-12-04 |
| CN108928052B CN108928052B (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810529395.2A Active CN108928052B (en) | 2018-05-29 | 2018-05-29 | High-temperature-resistant flexible elastic sealing gasket and preparation method and application thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108928052B (en) |
| WO (1) | WO2019227535A1 (en) |
Cited By (2)
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| CN111286296A (en) * | 2020-02-13 | 2020-06-16 | 建滔（清远）玻璃纤维有限公司 | Adhesive composition for edge sealing of electronic cloth and preparation method thereof |
| CN115506153A (en) * | 2022-09-28 | 2022-12-23 | 安徽省瑞欧新型材料有限公司 | Furnace door sealing heat insulation protection pad |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2019227535A1 (en) | 2019-12-05 |
| CN108928052B (en) | 2020-05-12 |
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