CN106313465A - Preparation method of polyurethane flexible pipe for automobile exhaust manifold - Google Patents

Preparation method of polyurethane flexible pipe for automobile exhaust manifold Download PDF

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Publication number
CN106313465A
CN106313465A CN201610779656.7A CN201610779656A CN106313465A CN 106313465 A CN106313465 A CN 106313465A CN 201610779656 A CN201610779656 A CN 201610779656A CN 106313465 A CN106313465 A CN 106313465A
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CN
China
Prior art keywords
preparation
polyurethane
polyurethane flexible
flexible tubing
slurry
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610779656.7A
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Chinese (zh)
Inventor
刘华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhu Evershine Automotive Component Co Ltd
Original Assignee
Wuhu Evershine Automotive Component Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhu Evershine Automotive Component Co Ltd filed Critical Wuhu Evershine Automotive Component Co Ltd
Priority to CN201610779656.7A priority Critical patent/CN106313465A/en
Publication of CN106313465A publication Critical patent/CN106313465A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0095—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by inversion technique; by transfer processes
    • D06N3/0097—Release surface, e.g. separation sheets; Silicone papers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • D06N3/146—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes characterised by the macromolecular diols used
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • D06N3/147—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes characterised by the isocyanates used
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/18—Applications used for pipes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2211/00—Specially adapted uses
    • D06N2211/12—Decorative or sun protection articles
    • D06N2211/28—Artificial leather

Abstract

The invention relates to the technical field of machining of automobile exhaust pipes, in particular to a preparation method of a polyurethane flexible pipe for an automobile exhaust manifold. The polyurethane flexible pipe for the automobile exhaust manifold is prepared by compounding polyvinyl chloride synthetic leather, polyurethane and clay, and the weight ratio of the polyvinyl chloride synthetic leather, the polyurethane and the clay is 1:2:3. The preparation method comprises the following steps: melting the polyvinyl chloride synthetic leather and the polyurethane through a twin-screw extruder, adding the clay to the head of the twin-screw extruder for uniform mixing, injecting the mixture into a melt pump, and then feeding the mixture into a mold for extrusion, so as to obtain the polyurethane flexible pipe for the automobile exhaust manifold. The polyurethane flexible pipe for the automobile exhaust manifold is relatively ideal in flexible degree and long in service life. In addition, the preparation method is relatively simple and convenient, the operation process is not cumbersome, and the preparation cost is relatively low.

Description

Preparation method for the polyurethane flexible tubing of automobile gas exhausting manifold branch
Technical field
The present invention relates to automobile exhaust pipe processing technique field, be specifically related to a kind of poly-ammonia for automobile gas exhausting manifold branch The preparation method of ester flexible pipe.
Background technology
Exhaust manifold, is connected with engine cylinder block, the aerofluxus of each cylinder is put together importing exhaust main, with The pipeline of difference.Requirement to it is mainly, and reduces exhaust resistance as far as possible, and avoids interfering between each cylinder.Aerofluxus is undue During concentration, can produce and interfere between each cylinder, namely during certain cylinder aerofluxus, that just encounters that other cylinder alters does not has emptying Waste gas.So, the resistance of aerofluxus will be increased, and then reduce the output of electromotor.Solution is, makes the row of each cylinder Gas separates as far as possible, Mei Gangyige branch, or Liang Gangyige branch, and makes the lengthening as far as possible of each branch independent molding to reduce Gas in different pipes influences each other.
In the structure of exhaust manifold, generally to use flexible pipe, the softness of existing this kind of flexible pipe is not It is the most preferable, and service life is shorter, need frequently to change.
Summary of the invention
An object of the present invention is to provide a kind of polyurethane flexible tubing for automobile gas exhausting manifold branch, can perfection gram Take the above-mentioned problems in the prior art.For achieving the above object, present invention employs techniques below scheme:
A kind of polyurethane flexible tubing for automobile gas exhausting manifold branch, is combined by polyvinyl chloride synthetic leather, polyurethane and clay-phase Making, the weight ratio between polyvinyl chloride synthetic leather, polyurethane and clay is 1:2:3.
For the preparation method of the polyurethane flexible tubing of automobile gas exhausting manifold branch, first by polyvinyl chloride synthetic leather, poly-ammonia Ester melts through double screw extruder, adds clay at head, injects Melt Pump, squeeze subsequently into mould after mix homogeneously Go out, obtain the polyurethane flexible tubing for automobile gas exhausting manifold branch.
The preparation method of polyvinyl chloride synthetic leather, step is as follows:
(1), face stock is mixed after stir, filter to obtain surface layer slurry,
(2), then by release paper preheat, surface layer slurry is coated with and scrapes release paper surface, heating plasticizing film forming；
(3) stir after, foaming layer slurry being mixed, filter to obtain foaming layer slurry；
(4), foaming layer slurry is coated on surface layer, foams at 120 DEG C；
(5), re-use aqueous polyurethane slurry and make foaming layer and nylon loop fit as adhesive linkage, peel off rolling, obtain polychlorostyrene Ethylene synthase is removed from office.
Aqueous polyurethane slurry used by polyvinyl chloride synthetic leather preparation is by polymeric dihydric alcohol 30%, Glycerin 7%, hydroxyl Base silicone oil 10%, diisocyanate 6%, the N-tert-butyl group-2 benzothiazole sulfenamide 5%, DMF 10%, metatitanic acid Four isopropyl alcohol esters 7%, ethylene glycol 10%, catalpol 8% and triethylene glycol amine 7% are made.
The preparation method of described aqueous polyurethane slurry, step is as follows:
1., polymeric dihydric alcohol, Glycerin, hydroxy silicon oil are added in consersion unit, under the protection of nitrogen, be warming up to 150 DEG C, vacuum dehydration is reacted 40 minutes；
2., it is cooled to 70 DEG C, adds diisocyanate, the N-tert-butyl group-2 benzothiazole sulfenamide and N, N-dimethyl formyl Amine, is again warming up to 150 DEG C and reacts 2 hours；
3., then it is cooled to 70 DEG C, adds metatitanic acid four isopropyl alcohol ester, be again warming up to 150 DEG C and react 1 hour；
4., add ethylene glycol regulation viscosity, make material viscosity in 60 DEG C time less than 50000cps；
5., under stirring condition, catalpol, triethylene glycol amine are joined in consersion unit, stirring mixing 2 hours, obtain for vapour The polyurethane flexible tubing of vehicle exhaust manifold.
The polyurethane flexible tubing for automobile gas exhausting manifold branch of the present invention, its beneficial effect shows:
The softness of this polyurethane flexible tubing is more satisfactory, and service life is long simultaneously.It addition, the preparation method of tubing is relatively For simplicity, operating procedure is the most loaded down with trivial details, and preparation cost is relatively low.
Detailed description of the invention
Below with reference to embodiment, the present invention is described in detail.But, embodiment content is only to this Bright example and explanation, described specific embodiment is done various repairing by affiliated those skilled in the art Change or supplement or use similar mode to substitute, without departing from the design of invention or surmount defined in the claims Scope, all should belong to protection scope of the present invention.
Embodiment 1
A kind of polyurethane flexible tubing for automobile gas exhausting manifold branch, is combined by polyvinyl chloride synthetic leather, polyurethane and clay-phase Making, the weight ratio between polyvinyl chloride synthetic leather, polyurethane and clay is 1:2:3.
Embodiment 2
For the preparation method of the polyurethane flexible tubing of automobile gas exhausting manifold branch, first by polyvinyl chloride synthetic leather, polyurethane warp Cross double screw extruder to melt, at head, add clay, inject Melt Pump after mix homogeneously, extrude subsequently into mould, i.e. The polyurethane flexible tubing of automobile gas exhausting manifold branch must be used for.
Embodiment 3
The preparation method of polyvinyl chloride synthetic leather, step is as follows:
(1), face stock is mixed after stir, filter to obtain surface layer slurry,
(2), then by release paper preheat, surface layer slurry is coated with and scrapes release paper surface, heating plasticizing film forming；
(3) stir after, foaming layer slurry being mixed, filter to obtain foaming layer slurry；
(4), foaming layer slurry is coated on surface layer, foams at 120 DEG C；
(5), re-use aqueous polyurethane slurry and make foaming layer and nylon loop fit as adhesive linkage, peel off rolling, obtain polychlorostyrene Ethylene synthase is removed from office.
Embodiment 4
Aqueous polyurethane slurry used by polyvinyl chloride synthetic leather preparation is by polymeric dihydric alcohol 30%, Glycerin 7%, hydroxyl silicon Oil 10%, diisocyanate 6%, the N-tert-butyl group-2 benzothiazole sulfenamide 5%, DMF 10%, metatitanic acid four are different Propanol ester 7%, ethylene glycol 10%, catalpol 8% and triethylene glycol amine 7% are made.
Embodiment 5
The preparation method of aqueous polyurethane slurry, step is as follows:
1., polymeric dihydric alcohol, Glycerin, hydroxy silicon oil are added in consersion unit, under the protection of nitrogen, be warming up to 150 DEG C, vacuum dehydration is reacted 40 minutes；
2., it is cooled to 70 DEG C, adds diisocyanate, the N-tert-butyl group-2 benzothiazole sulfenamide and N, N-dimethyl formyl Amine, is again warming up to 150 DEG C and reacts 2 hours；
3., then it is cooled to 70 DEG C, adds metatitanic acid four isopropyl alcohol ester, be again warming up to 150 DEG C and react 1 hour；
4., add ethylene glycol regulation viscosity, make material viscosity in 60 DEG C time less than 50000cps；
5., under stirring condition, catalpol, triethylene glycol amine are joined in consersion unit, stirring mixing 2 hours, obtain for vapour The polyurethane flexible tubing of vehicle exhaust manifold.

Claims (4)

1. the preparation method for the polyurethane flexible tubing of automobile gas exhausting manifold branch, it is characterised in that: first by polychlorostyrene second Alkene synthetic leather, polyurethane melt through double screw extruder, add clay at head, inject Melt Pump, so after mix homogeneously Rear entrance mould is extruded, and obtains the polyurethane flexible tubing for automobile gas exhausting manifold branch.
2. the preparation method of the polyurethane flexible tubing for automobile gas exhausting manifold branch as claimed in claim 1, it is characterised in that: The preparation method of polyvinyl chloride synthetic leather, step is as follows:
(1), face stock is mixed after stir, filter to obtain surface layer slurry,
(2), then by release paper preheat, surface layer slurry is coated with and scrapes release paper surface, heating plasticizing film forming；
(3) stir after, foaming layer slurry being mixed, filter to obtain foaming layer slurry；
(4), foaming layer slurry is coated on surface layer, foams at 120 DEG C；
(5), re-use aqueous polyurethane slurry and make foaming layer and nylon loop fit as adhesive linkage, peel off rolling, obtain polychlorostyrene Ethylene synthase is removed from office.
3. the preparation method of the polyurethane flexible tubing for automobile gas exhausting manifold branch as claimed in claim 2, it is characterised in that: Described aqueous polyurethane slurry is by polymeric dihydric alcohol 30%, Glycerin 7%, hydroxy silicon oil 10%, diisocyanate 6%, uncle N- Butyl-2 benzothiazole sulfenamide 5%, DMF 10%, metatitanic acid four isopropyl alcohol ester 7%, ethylene glycol 10%, catalpol 8% and triethylene glycol amine 7% make.
4. the preparation method of the polyurethane flexible tubing for automobile gas exhausting manifold branch as claimed in claim 3, it is characterised in that: The preparation method of described aqueous polyurethane slurry, step is as follows:
1., polymeric dihydric alcohol, Glycerin, hydroxy silicon oil are added in consersion unit, under the protection of nitrogen, be warming up to 150 DEG C, vacuum dehydration is reacted 40 minutes；
2., it is cooled to 70 DEG C, adds diisocyanate, the N-tert-butyl group-2 benzothiazole sulfenamide and N, N-dimethyl formyl Amine, is again warming up to 150 DEG C and reacts 2 hours；
3., then it is cooled to 70 DEG C, adds metatitanic acid four isopropyl alcohol ester, be again warming up to 150 DEG C and react 1 hour；
4., add ethylene glycol regulation viscosity, make material viscosity in 60 DEG C time less than 50000cps；
5., under stirring condition, catalpol, triethylene glycol amine are joined in consersion unit, stirring mixing 2 hours, obtain for vapour The polyurethane flexible tubing of vehicle exhaust manifold.
CN201610779656.7A 2016-08-31 2016-08-31 Preparation method of polyurethane flexible pipe for automobile exhaust manifold Pending CN106313465A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610779656.7A CN106313465A (en) 2016-08-31 2016-08-31 Preparation method of polyurethane flexible pipe for automobile exhaust manifold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610779656.7A CN106313465A (en) 2016-08-31 2016-08-31 Preparation method of polyurethane flexible pipe for automobile exhaust manifold

Publications (1)

Publication Number Publication Date
CN106313465A true CN106313465A (en) 2017-01-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610779656.7A Pending CN106313465A (en) 2016-08-31 2016-08-31 Preparation method of polyurethane flexible pipe for automobile exhaust manifold

Country Status (1)

Country Link
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005056222A1 (en) * 2005-11-25 2007-05-31 Benecke-Kaliko Ag Multicolored film production, for use e.g. as decorative PVC film for automobile interiors or in synthetic leather, by inverted coating method including application of side-by-side plastics charges of different colors
CN102115587A (en) * 2010-12-30 2011-07-06 李兵 Polymer section and preparation method thereof
CN102995450A (en) * 2012-10-23 2013-03-27 合肥市安山涂层织物有限公司 Polyvinyl chloride synthetic leather for luggage and manufacturing method thereof
CN104061379A (en) * 2014-06-26 2014-09-24 五行材料科技（江苏）有限公司 Polyurethane flexible tube and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005056222A1 (en) * 2005-11-25 2007-05-31 Benecke-Kaliko Ag Multicolored film production, for use e.g. as decorative PVC film for automobile interiors or in synthetic leather, by inverted coating method including application of side-by-side plastics charges of different colors
CN102115587A (en) * 2010-12-30 2011-07-06 李兵 Polymer section and preparation method thereof
CN102995450A (en) * 2012-10-23 2013-03-27 合肥市安山涂层织物有限公司 Polyvinyl chloride synthetic leather for luggage and manufacturing method thereof
CN104061379A (en) * 2014-06-26 2014-09-24 五行材料科技（江苏）有限公司 Polyurethane flexible tube and preparation method thereof

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Application publication date: 20170111