CN106498752A - A kind of material modified method of modifying of ternary catalyzing unit liner - Google Patents
A kind of material modified method of modifying of ternary catalyzing unit liner Download PDFInfo
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- CN106498752A CN106498752A CN201610991695.3A CN201610991695A CN106498752A CN 106498752 A CN106498752 A CN 106498752A CN 201610991695 A CN201610991695 A CN 201610991695A CN 106498752 A CN106498752 A CN 106498752A
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- Prior art keywords
- catalyzing unit
- ternary catalyzing
- mass content
- modifying
- modified method
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- 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
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
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- 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
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
- D06M13/248—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing sulfur
- D06M13/262—Sulfated compounds thiosulfates
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- 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
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
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- 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
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/53—Polyethers
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- 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
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
Abstract
The invention discloses a kind of material modified method of modifying of ternary catalyzing unit liner, including：(1) under conditions of pH value 3.0 5.0, silane coupler γ aminopropyl triethoxysilanes and the hydrolysis of γ (methacryloxypropyl) propyl trimethoxy silicane are made；(2) PEG400 monoleate lubricant, polyacrylic acid film former, sodium lauryl sulphate are added in the solution that step (1) is obtained, form infiltration solution, by mullite fiber immersion infiltration solution, infiltration temperature is 50 DEG C 75 DEG C, and infiltrating time is 20 60min；(3) drying and moulding.The present invention is by being modified to mullite fiber so that its performance boost, is more suitable for ternary catalyzing unit liner.
Description
Technical field
A kind of the present invention relates to technical field of automobile, more particularly to the modification side that ternary catalyzing unit liner is material modified
Method.
Background technology
Automobile is one of essential tool of people's trip at this stage, but in car running process, combustion of fossil fuels, discharge
Tail gas in there is nitrogen oxides, oxysulfide, carbon monoxide, Hydrocarbon and solid suspended particle, cause air dirty
Dye.
For reducing pollution of the vehicle exhaust to air, ternary catalyzing unit generally equipped in tail gas discharge system by automobile.Three
First catalyst converter point metal shell, three part of liner and carrier.Liner is wrapped in carrier and is placed in metal shell, and wherein liner is played
Fixed, buffering, insulation noise reduction and sealing prevent the effect that tail gas overflows.
With ternary catalyzing unit using ceramic block mesh number increase, wall thickness accordingly reduces so that ceramic monolith intensity compared with
Little.As gasket material is filled in the space between ceramic monolith and metal shell, so being used during the design of liner
Material should be taken into account and can be allowed to be suitable for wider operating temperature range, liner should be able to be reduced again while immobilization carrier
Produced pressure, in order to avoid crush thin-wall carrier.
Liner needs to ensure ternary catalyzing unit normal work, will be chronically in high-temperature oxidation environment, then the material of liner
Material should possess stability under such conditions.The material for making liner has metal, glass fibre or alumina silicate fibre, root
According to the difference of material character, the liner of ternary catalyzing unit can be divided into expansion and unexpansive two class.
Contain Vermiculitum in traditional inflated insert, this is a kind of silicate of layer structure.Vermiculitum is because be heated to 200
Can produce along the c-axis of crystal after～30 degrees Celsius and peel off as anthelmintic and gain the name, this mineral have very high coefficient of thermal expansion,
More than ten times or so can be expanded when being heated to 300 degrees centigrade, and are bent.
Larger pressure may be produced to thin-walled in case of heating as expanding vermiculite rate is larger, instigate carrier to break
Broken or failure, the non-expansion type liner for therefore not containing Vermiculitum start progressively to use.With glass fibre, boron fibre, ceramic fibre
Inorfil for representing has higher intensity and high-temperature mechanical property compared to organic polymer fiber, therefore in liner
Middle obtain extensive application.
Mullite fiber as a kind of novel oxidized Al-base ceramic fiber, have in high-temperature oxidation environment heat stability,
Creep resistant, thermal shock resistance are good, and the low excellent specific property of thermal coefficient of expansion, its gasket material that makes disclosure satisfy that automobile ternary
Insulation, damping abrasion resistant effect required for catalyst converter normal work, it is ensured that the use temperature of carrier loaded catalyst, protects
Shield and immobilization carrier.But, even by the more uniform mullite fiber that chemical method is manufactured, if for follow-up into
Type felt operation, still needs to process its surface, it is therefore an objective to be coated with protecting film in fiber surface, can be in forming process
In run into mechanical friction when protect fiber, prevent fiber occur fracture, surface crude, increase interfibrous bonding make
With to improve the effect of fiberizing.
Content of the invention
It is an object of the invention to proposing that a kind of ternary catalyzing unit liner is material modified and method of modifying, enable to not come
Mineral wool is more suitable for the manufacture of ternary catalyzing unit liner.
It is that the present invention is employed the following technical solutions up to this purpose：
The material modified method of modifying of ternary catalyzing unit liner, including：
(1) under conditions of pH value 3.0-5.0, silane coupler gamma-aminopropyl-triethoxy-silane and γ-(methyl are made
Acryloyl-oxy) propyl trimethoxy silicane hydrolysis；
(2) in the solution that step (1) is obtained add PEG400 monoleate lubricant, polyacrylic acid film former,
Sodium lauryl sulphate, forms infiltration solution, and by mullite fiber immersion infiltration solution, infiltration temperature is 50 DEG C -75 DEG C, infiltration
Time is 20-60min；
(3) drying and moulding.
Preferably, the coupling agent mass content be 0.4-0.8%, film former mass content be 18-22%, lubricant matter
Amount content is 0.8-1.4%.
Silane coupler using front needing to hydrolyze (pH=3.0～5.0) in acid condition, its alkoxyl participates in anti-
Ethanol and silanol should be generated, the hydroxylic moiety of silanol each other or carries out etherification reaction with the-Si-OH of fiber surface and formed
Si-O-Si structures, so that be grafted to fiber surface.Afterwards, in the active group of the other end of silane coupler and wetting agent
Organic principle reacts, and has thus reached grafting purpose.
Test result indicate that, with the rising of temperature, the amount of coating of fiber surface is in rising trend, but more than 75 DEG C after,
Amount of coating significantly decreases, and illustrates that the too high grafting activity that can make fiber surface on the contrary of temperature reduces, is unfavorable for that acrylic acid exists
Fiber surface coating.Infiltrating time length affects not being very big that on the amount of coating of fiber surface but amount of coating presents and first increase
The process for tending to be steady again, now fiber surface grafting process reached saturation, fiber surface is sterically hindered larger, without work
Property position be available for being grafted, then wetting agent process time is unsuitable oversize.Content of the acrylic acid in wetting agent is coating for fiber surface
Influential effect is more apparent, and with the increase of content, the amount of coating of fiber surface is also increasing.With the increase of acrylic acid content,
Wetting agent is coated in the thickness of fiber surface to be increased, and gluing due to there occurs between the effect fiber of wetting agent, is conducive to
Molding and protection of the fiber in following process.
TG-DTA analysis figure shows that the coating wetting agent composition of fiber surface is brighter at two as the rising of temperature has
Aobvious weightlessness, respectively between 350-400 DEG C and between 450-500 DEG C, corresponding heat flow curve has two exothermic peaks, explanation
It is the decomposition of organic constituentses in wetting agent herein.In room temperature in 600 DEG C of temperature range, fiber surface decomposes except Organic substance
Outside weightless corresponding exothermic peak, do not signify the peak of fibrous crystal structure change, illustrate that fiber is stable in properties in the process.Logical
Cross the change that infrared spectrum analysiss can intuitively judge characteristic group in grafting process.By Si-O stretching vibration absworption peaks
Change to judge whether silane coupler forms the structure for playing interconnection function in material surface by etherificate.Infared spectrum pair
Show than result, the Si-O-Si stretching vibration absworption peaks of fiber surface strengthen, the product silanol after coupling agent hydrolysis and fibre are described
Dimension surface grafting forms Si-O-Si structures.Through the modified fiber of wetting agent wave number be 1730cm-1Have where place significantly
Absworption peak occurs, and is the stretching vibration characteristic peak of C=0 double bonds herein, and the corresponding C=O double bonds that should be in acrylic acid structure are said
Bright acrylic acid has been coated in fiber surface.
The present invention is by being modified to mullite fiber so that its performance boost, is more suitable for ternary catalyzing unit liner.
Specific embodiment
Technical scheme is further illustrated below by specific embodiment.
Embodiment 1
The material modified method of modifying of ternary catalyzing unit liner, including：
(1) under conditions of pH value 3.0, silane coupler gamma-aminopropyl-triethoxy-silane and γ-(metering system are made
Acyl-oxygen) propyl trimethoxy silicane hydrolysis；
(2) in the solution that step (1) is obtained add PEG400 monoleate lubricant, polyacrylic acid film former,
Sodium lauryl sulphate, forms infiltration solution, and by mullite fiber immersion infiltration solution, infiltration temperature is 50 DEG C, infiltrating time
For 20min；
(3) drying and moulding.
Preferably, the coupling agent mass content is 0.4%, and film former mass content is 18%, lubricant mass content
For 0.8%.
Embodiment 2
The material modified method of modifying of ternary catalyzing unit liner, including：
(1) under conditions of pH value 5.0, silane coupler gamma-aminopropyl-triethoxy-silane and γ-(metering system are made
Acyl-oxygen) propyl trimethoxy silicane hydrolysis；
(2) in the solution that step (1) is obtained add PEG400 monoleate lubricant, polyacrylic acid film former,
Sodium lauryl sulphate, forms infiltration solution, and by mullite fiber immersion infiltration solution, infiltration temperature is 75 DEG C, infiltrating time
For 60min；
(3) drying and moulding.
Preferably, the coupling agent mass content is 0.6%, and film former mass content is 20%, lubricant mass content
For 1.0%.
Embodiment 3
The material modified method of modifying of ternary catalyzing unit liner, including：
(1) under conditions of pH value 4.0, silane coupler gamma-aminopropyl-triethoxy-silane and γ-(metering system are made
Acyl-oxygen) propyl trimethoxy silicane hydrolysis；
(2) in the solution that step (1) is obtained add PEG400 monoleate lubricant, polyacrylic acid film former,
Sodium lauryl sulphate, forms infiltration solution, and by mullite fiber immersion infiltration solution, infiltration temperature is 65 DEG C, infiltrating time
For 40min；
(3) drying and moulding.
Preferably, the coupling agent mass content is 0.8%, and film former mass content is 22%, lubricant mass content
For 1.4%.
Claims (3)
1. the material modified method of modifying of a kind of ternary catalyzing unit liner, including：
(1) under conditions of pH value 3.0-5.0, silane coupler gamma-aminopropyl-triethoxy-silane and γ-(metering system are made
Acyl-oxygen) propyl trimethoxy silicane hydrolysis；
(2) in the solution that step (1) is obtained add PEG400 monoleate lubricant, polyacrylic acid film former, 12
Alkyl sodium sulfate, forms infiltration solution, and by mullite fiber immersion infiltration solution, infiltration temperature is 50 DEG C -75 DEG C, infiltrating time
For 20-60min；
(3) drying and moulding.
2. the material modified method of modifying of ternary catalyzing unit liner as claimed in claim 1, it is characterised in that the coupling agent
Mass content is 0.4-0.8%, and film former mass content is 18-22%, and lubricant mass content is 0.8-1.4%.
3. the material modified method of modifying of ternary catalyzing unit liner as claimed in claim 2, it is characterised in that the coupling agent
Mass content is 0.6%, and film former mass content is 20%, and lubricant mass content is 1.0%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610991695.3A CN106498752A (en) | 2016-11-10 | 2016-11-10 | A kind of material modified method of modifying of ternary catalyzing unit liner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610991695.3A CN106498752A (en) | 2016-11-10 | 2016-11-10 | A kind of material modified method of modifying of ternary catalyzing unit liner |
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| Publication Number | Publication Date |
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| CN106498752A true CN106498752A (en) | 2017-03-15 |
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| CN201610991695.3A Pending CN106498752A (en) | 2016-11-10 | 2016-11-10 | A kind of material modified method of modifying of ternary catalyzing unit liner |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103979916A (en) * | 2014-04-30 | 2014-08-13 | 浙江炜烨晶体纤维有限公司 | Mullite liner outer layer for auto-exhaust catalyst and preparation method thereof |
| CN104131363A (en) * | 2014-07-21 | 2014-11-05 | 陈海锋 | Porous mullite fiber product |
| CN104294591A (en) * | 2014-10-09 | 2015-01-21 | 华东理工大学 | Mullite fiber surface modification method |
-
2016
- 2016-11-10 CN CN201610991695.3A patent/CN106498752A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103979916A (en) * | 2014-04-30 | 2014-08-13 | 浙江炜烨晶体纤维有限公司 | Mullite liner outer layer for auto-exhaust catalyst and preparation method thereof |
| CN104131363A (en) * | 2014-07-21 | 2014-11-05 | 陈海锋 | Porous mullite fiber product |
| CN104294591A (en) * | 2014-10-09 | 2015-01-21 | 华东理工大学 | Mullite fiber surface modification method |
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Application publication date: 20170315 |