EP3717553A1 - Pesu particle foams for applications in aviation interiors - Google Patents
Pesu particle foams for applications in aviation interiorsInfo
- Publication number
- EP3717553A1 EP3717553A1 EP18800669.6A EP18800669A EP3717553A1 EP 3717553 A1 EP3717553 A1 EP 3717553A1 EP 18800669 A EP18800669 A EP 18800669A EP 3717553 A1 EP3717553 A1 EP 3717553A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pesu
- particle foam
- weight
- foamed
- foam
- 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.)
- Withdrawn
Links
- 239000006260 foam Substances 0.000 title claims abstract description 84
- 239000002245 particle Substances 0.000 title claims description 46
- 229920006393 polyether sulfone Polymers 0.000 claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 20
- 238000005187 foaming Methods 0.000 claims description 19
- 239000000654 additive Substances 0.000 claims description 14
- 239000008187 granular material Substances 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 11
- 239000003380 propellant Substances 0.000 claims description 11
- 239000004604 Blowing Agent Substances 0.000 claims description 10
- 238000010276 construction Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 230000009477 glass transition Effects 0.000 claims description 8
- 239000002667 nucleating agent Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 5
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 4
- 239000003063 flame retardant Substances 0.000 claims description 4
- 239000002105 nanoparticle Substances 0.000 claims description 4
- 239000000049 pigment Substances 0.000 claims description 4
- 239000004970 Chain extender Substances 0.000 claims description 3
- 239000004609 Impact Modifier Substances 0.000 claims description 3
- 239000012963 UV stabilizer Substances 0.000 claims description 3
- 239000002666 chemical blowing agent Substances 0.000 claims description 3
- 239000004014 plasticizer Substances 0.000 claims description 3
- 239000006254 rheological additive Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000002318 adhesion promoter Substances 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 150000001299 aldehydes Chemical class 0.000 claims description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 2
- 150000001336 alkenes Chemical class 0.000 claims description 2
- 150000002576 ketones Chemical class 0.000 claims description 2
- 230000002040 relaxant effect Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 239000004695 Polyether sulfone Substances 0.000 abstract description 31
- 229920000642 polymer Polymers 0.000 abstract description 21
- 238000010097 foam moulding Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000012805 post-processing Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract description 2
- 239000011265 semifinished product Substances 0.000 abstract description 2
- 229920000491 Polyphenylsulfone Polymers 0.000 description 12
- 229920003208 poly(ethylene sulfide) Polymers 0.000 description 9
- 238000011068 loading method Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 229920000098 polyolefin Polymers 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- MARUHZGHZWCEQU-UHFFFAOYSA-N 5-phenyl-2h-tetrazole Chemical compound C1=CC=CC=C1C1=NNN=N1 MARUHZGHZWCEQU-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000004156 Azodicarbonamide Substances 0.000 description 2
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- NBBJYMSMWIIQGU-UHFFFAOYSA-N Propionic aldehyde Chemical compound CCC=O NBBJYMSMWIIQGU-UHFFFAOYSA-N 0.000 description 2
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 description 2
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 2
- 235000019399 azodicarbonamide Nutrition 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- -1 for example Polymers 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- ZGEGCLOFRBLKSE-UHFFFAOYSA-N methylene hexane Natural products CCCCCC=C ZGEGCLOFRBLKSE-UHFFFAOYSA-N 0.000 description 2
- 229920002492 poly(sulfone) Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 1
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229920003295 Radel® Polymers 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003003 phosphines Chemical class 0.000 description 1
- AQSJGOWTSHOLKH-UHFFFAOYSA-N phosphite(3-) Chemical class [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000010420 shell particle Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08J9/16—Making expandable particles
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/16—Making expandable particles
- C08J9/18—Making expandable particles by impregnating polymer particles with the blowing agent
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- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
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- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B32B5/20—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 features of a layer of foamed material foamed in situ
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- 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
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- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- C08J9/0004—Use of compounding ingredients, the chemical constitution of which is unknown, broadly defined, or irrelevant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C08J9/125—Water, e.g. hydrated salts
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/141—Hydrocarbons
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/142—Compounds containing oxygen but no halogen atom
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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- C08J9/228—Forming foamed products
- C08J9/232—Forming foamed products by sintering expandable particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
- B29B9/065—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion under-water, e.g. underwater pelletizers
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- C08J2381/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen, or carbon only; Polysulfones; Derivatives of such polymers
- C08J2381/06—Polysulfones; Polyethersulfones
Definitions
- PESU particle foams for applications in the aviation interior are PESU particle foams for applications in the aviation interior
- Polymer foams based on polyethersulfone (PESU) fulfill the aviation requirements of the aviation industry. Especially the requirements of the fire behavior, the media resistance and the mechanics make a big difference here
- suitable polymer foams are produced as semi-finished products.
- Post-processing to moldings is uneconomical in terms of time and material utilization, such as e.g. due to large amounts of cut waste.
- the invention solves this problem by the fact that the material suitable in principle can be processed into particle foam moldings. These moldings can be produced without reworking in short cycle times and thus economically. Furthermore, this opens up new possibilities of functional integration, such as by direct foaming of inserts, etc., and in terms of creative freedom.
- PESU poly (oxy-1,4-phenylsulfonyl-1,4-phenyl)
- porous membranes of such blends are described, for example, in EP 0 764 461.
- Such membranes are made by casting from an aqueous polymer composition.
- Foams made of PPSU or PES are known in principle, although not in mixture with each other. So in L. Sorrentino were: "Polymeric foams from high-performance
- Blends containing either PPSU or PSE are known as it were, though information in the art is rare. Thus, both polymers are especially useful as a minor component, e.g. described in PS foams to affect the properties in these commodity materials. Foams containing PPSU or PES as the main component are only to be found in a few descriptions, such as the following:
- WO 2015/097058 describes foams based on PPSU or PES containing at least 10% by weight of a polyolefin.
- the phase-separating polyolefin acts primarily as a nucleating agent. In this case, more uniform pores are achieved, but without the flame retardancy or mechanical properties, such as
- Foams a good combination of applicability at high temperatures, good mechanical properties, in particular with respect to the elongation at break and at least sufficient for many applications in the field of vehicle and aircraft construction
- the foam should have a high resistance to various liquid, acidic, basic or hydrophobic liquids and to emulsions. Furthermore, from the composition to be developed by a variety of methods and with a wide range of three-dimensional shapes of the foam should be feasible and in the production of the final component as little or no waste as possible.
- compositions for the production of temperature-resistant, flame-retardant show m materials for use in lightweight construction, especially in the aerospace industry, shipbuilding, automotive or rail vehicle.
- This composition according to the invention for the production of foams is characterized in that it is a PESU particle foam having a glass transition temperature between 180 and 215 ° C. as foamed PESU and in which the mean cell diameter of the particle foam is less than 1000 ⁇ m, preferably less than 500 miti, more preferably less than 250 gm.
- a cell is understood to be the region in a particle foam which is defined by foaming a single particle. This is particularly surprising since the actual glass transition temperature of the PESU is 225 ° C.
- the material sample is held for at least 2 min at this temperature. Thereafter, it is again cooled to a temperature which is at least 20 ° C below the lowest to be determined glass transition or melting temperature, the cooling rate should be a maximum of 20 ° C / min, preferably a maximum of 10 ° C / min. After a further waiting time of a few minutes, the actual measurement takes place, in which the sample is heated to at least 20 ° C. above the highest melting or glass transition temperature at a heating rate of generally 10 ° C./min or less.
- the composition according to the invention for the production of the PESU preferably consists of 80 to 99.5% by weight of PESU. Furthermore, this composition has 0.5 to 10% by weight, preferably 1 to 9% by weight of a blowing agent. In addition, among other things 0 to 10 wt%, preferably 1 to 5 wt% additives may be included.
- the additives may in particular be flame retardant additives, plasticizers, pigments, UV stabilizers, nucleating agents, impact modifiers, adhesion promoters, rheology modifiers, chain extenders, fibers and / or nanoparticles.
- phosphorus compounds in particular phosphates, phosphines or phosphites are used.
- Suitable UV stabilizers or UV absorbers are generally known to the person skilled in the art.
- HALS compounds Tiuvine or triazoles.
- the impact modifiers used are generally polymer particles comprising an elastomer or soft phase. These are often core (shell) shell particles, with an outer shell that is as a maximum weakly crosslinked and as a pure polymer would have at least minimal miscibility with the blend of PES and PPSU.
- all known pigments can be used as pigments.
- the influence on the foaming process - as with all other additives used in larger amounts of more than 0.1% by weight - should be investigated. This is feasible for the skilled person with relatively little effort.
- Suitable plasticizers, rheology modifiers and chain extenders are generally known to the person skilled in the art from the production of films, membranes or molded parts from PES, PPSU or blends of these two and can accordingly be applied to the
- Preparation of a foam are transferred from the composition of the invention.
- the fibers are usually known fiber materials, the one
- Polymer composition can be added.
- the fibers are PES, PPSU or blend fibers, the latter being PSE and PPSU.
- the nanoparticles which can be present, for example, as tubes, flakes, rods, spheres or in other known forms, are generally inorganic materials. These can take on different functions in the finished foam. Thus, these particles partially act as nucleating agents during foaming. Furthermore, the particles can influence the mechanical properties as well as the (gas) diffusion properties of the foam. Furthermore, the particles additionally contribute to the low flammability.
- phase-separating polymers can also be added as nucleating agents.
- the polymers described are separated from the others in the consideration of the composition
- Nucleating agents as these primarily affect the mechanical properties of the foam, the melt viscosity of the composition and thus the
- the additives may optionally also contain up to 9% by weight of a second polymer component for adjusting the physical properties.
- the additional polymers may be, for example, polyamides, polyolefins, in particular PP, PEEK, polyesters, in particular PET, other sulfur-based polymers, such as, for example, PSU, polyetherimides or polymethacrylimide.
- blowing agent is relatively free and determined for the skilled person in particular by the chosen foaming method and the foaming temperature. Suitable for example
- Alcohol e.g. Isopranol or butanol, ketones, such as acetone or methyl ethyl ketone, alkanes, such as iso- or n-butane, pentane, hexane, heptane or octane, alkenes, such as pentene, hexene, heptene or octene, CO2, N2, water , Ethers, such as diethyl ether, aldehydes, such as Formaldehyde or propanal, fluorinated (chlorinated) hydrocarbons, chemical blowing agents or mixtures of several of these substances.
- ketones such as acetone or methyl ethyl ketone
- alkanes such as iso- or n-butane
- pentane such as iso- or n-butane
- pentane such as iso- or n-butane
- the chemical blowing agents are less or non-volatile substances that are chemically decomposed under the foaming conditions and thereby the actual
- Form blowing agent A very simple example of this is tert-butanol, which is under
- Foaming conditions isobutene and water forms.
- Further examples are NaHCO 3, citric acid or their derivatives, azodicarbonamide (ADC) or compounds thereof,
- TSH Toluenesulfonylhydrazine
- OBSH oxybis (benzosulfohydrozide)
- 5-phenyltetrazole 5-PT
- the PESU particle foam according to the invention has a tensile strength according to IS01926 greater than 0.5 MPa, an elongation at break according to IS01926 between 8 and 12%, a shear modulus according to ASTM C273 at room temperature greater than 8 MPa, a shear strength according to ASTM C273 at room temperature greater than 0.45 MPa , a pressure module according to ISO 844 at room temperature greater than 13 MPa and a compressive strength to ISO 844 at room temperature greater than 0.4 MPa.
- a tensile strength according to IS01926 greater than 0.5 MPa an elongation at break according to IS01926 between 8 and 12%
- a shear modulus according to ASTM C273 at room temperature greater than 8 MPa a shear strength according to ASTM C273 at room temperature greater than 0.45 MPa
- a pressure module according to ISO 844 at room temperature greater than 13 MPa and a compressive strength to ISO 844 at room temperature greater than 0.4 MPa.
- Aircraft's important fire safety regulations or fire characteristics according to FAR 25.852 is applicable.
- the foams according to the invention preferably have a degree of foaming which constitutes a reduction of the density in relation to the pure blend of between 1 and 98%, preferably between 50 and 97%, particularly preferably between 70 and 95%.
- the foam has a density between 20 and 1000 kg / m 3 , preferably 40 and 250 kg / m 3 .
- PESU particle foam and process for its preparation are part of the present invention.
- a composition consisting of 80 to 99.5% by weight of PESU, 0.5 to 10% by weight of blowing agent and 0 to 10% by weight of additives by means of an extruder
- Perforated plate processed into a foamed granules The temperatures between feed zone and screw tip are in a range between 180 and 380 ° C. In most cases, there is no uniform temperature over this distance, but, for example, a gradient with increasing temperature in the conveying direction of the polymer melt.
- the temperature of the perforated plate is between 300 and 350 ° C and the melt temperature when exiting through the perforated plate between 200 and 360 ° C.
- the loading with the propellant takes place in the extruder.
- the granules then foam on leaving the perforated plate.
- the granules thus foamed are then preferably further foamed to form a particle foam.
- the composition may be passed into an underwater granulator upon exiting the extruder. This is designed so with respect to a combination of temperature and pressure that foaming is prevented. This procedure results in a granulate laden with propellant, which can later be foamed by renewed energy supply to the desired density and / or can be further processed under optional shaping to form a particle foam workpiece.
- a composition consisting of 90 to 100% by weight of PESU and 0 to 10% by weight of additives is also initially processed into granules by means of an extruder with perforated plate, but not loaded with a blowing agent.
- the temperatures, which are again not necessarily uniform, between the feed zone and the screw tip are in the range between 180 and 380.degree.
- the temperature of the perforated plate between 300 and 350 ° C and the melt temperature at the exit through the perforated plate between 200 and 360 ° C.
- the granules are then loaded in an autoclave with a propellant so that it contains between 0.5 and 10 wt% propellant.
- the propellant loaded granules can then be foamed by relaxing and / or by heating to a temperature of about 200 ° C to a particle foam.
- Polymer compositions are known, in particular with respect to methods for
- thermoplastic foams are applicable to the present composition.
- the composition may be foamed at a temperature between 150 and 250 ° C and a pressure between 0.1 and 2 bar.
- the actual foaming takes place, if not in connection to the extrusion, at a temperature between 180 and 230 ° C in a normal pressure atmosphere.
- a composition still without propellant, in an autoclave at a temperature e.g. between 20 and 120 ° C and a pressure e.g. between 30 and 100 bar applied to the propellant and then foamed by lowering the pressure and raising the temperature to the foaming temperature in the autoclave.
- a pressure e.g. between 30 and 100 bar applied to the propellant and then foamed by lowering the pressure and raising the temperature to the foaming temperature in the autoclave.
- Welded means that by heating the components, an adhesion between the materials, e.g. by partially filling open pores on the foam surface with cover material.
- the cover material can be wood, metals, decorative films, composite materials, prepregs or other known materials.
- the produced particle foam can alternatively in the presence of a
- Covering material are foamed so that it is connected to this by means of gluing or welding.
- the PESU can alternatively also be discharged from the extruder into an optionally heated mold, optionally containing cover materials. This is under molding to a
- Foamed particle foam or a composite material Foamed particle foam or a composite material.
- Composition are discharged at the exit from the extruder in a foam injection device. In this device is then foamed directly under shaping.
- the particle foams or composite materials can be provided with inlets during foaming and / or channels can be incorporated into the particle foam.
- foams of the invention or the foams produced by the process according to the invention find particular in the construction of space or
- Aircraft especially in their interior use. That can do that
- Particle foams produced by the process of the invention or not, as well as the composite materials realized therefrom include. Especially because of the heavy
- Flammability foams of the invention can also be installed in the interior of these vehicles.
- the HT foams produced according to the invention can be further processed into foam moldings or foam core composite materials.
- foam moldings or foam core composite materials may in particular be used in series production, e.g. for bodywork or interior trim in the automotive industry, interior parts in
- Rail vehicle or shipbuilding in the aerospace industry, in mechanical engineering, at the manufacture of sports equipment, in furniture construction or in the construction of wind turbines.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17203688 | 2017-11-27 | ||
PCT/EP2018/081689 WO2019101667A1 (en) | 2017-11-27 | 2018-11-19 | Pesu particle foams for applications in aviation interiors |
Publications (1)
Publication Number | Publication Date |
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EP3717553A1 true EP3717553A1 (en) | 2020-10-07 |
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Application Number | Title | Priority Date | Filing Date |
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EP18800669.6A Withdrawn EP3717553A1 (en) | 2017-11-27 | 2018-11-19 | Pesu particle foams for applications in aviation interiors |
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US (1) | US20210095092A1 (en) |
EP (1) | EP3717553A1 (en) |
JP (1) | JP2021504523A (en) |
KR (1) | KR20200084898A (en) |
CN (1) | CN111406091A (en) |
AU (1) | AU2018371107A1 (en) |
BR (1) | BR112020010372A2 (en) |
CA (1) | CA3083553A1 (en) |
IL (1) | IL274859A (en) |
MA (1) | MA49867A1 (en) |
MX (1) | MX2020005297A (en) |
TW (1) | TW201925295A (en) |
WO (1) | WO2019101667A1 (en) |
ZA (1) | ZA202003832B (en) |
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MX2020001993A (en) | 2017-08-24 | 2020-09-25 | Evonik Operations Gmbh | Pei particle foams for applications in aviation interiors. |
EP3717211B1 (en) | 2017-11-27 | 2023-01-25 | Evonik Operations GmbH | High temperature foam materials with reduced resin absorption for the preparation of sandwich materials |
EP3889212A1 (en) * | 2020-04-03 | 2021-10-06 | Evonik Operations GmbH | Pei or pei-peek- particle foams for lightweight applications |
KR20230052274A (en) * | 2020-08-18 | 2023-04-19 | 에보닉 오퍼레이션스 게엠베하 | Preparation of high-temperature polymer-based pellets by underwater pelletization at elevated water temperatures to produce (rigid) bead foams |
WO2024146840A1 (en) * | 2023-01-06 | 2024-07-11 | Evonik Operations Gmbh | Process for producing a single-material particle-foam component |
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Publication number | Priority date | Publication date | Assignee | Title |
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-
2018
- 2018-11-19 KR KR1020207018308A patent/KR20200084898A/en not_active Application Discontinuation
- 2018-11-19 JP JP2020528470A patent/JP2021504523A/en active Pending
- 2018-11-19 MX MX2020005297A patent/MX2020005297A/en unknown
- 2018-11-19 BR BR112020010372-1A patent/BR112020010372A2/en not_active Application Discontinuation
- 2018-11-19 US US15/733,134 patent/US20210095092A1/en not_active Abandoned
- 2018-11-19 AU AU2018371107A patent/AU2018371107A1/en not_active Abandoned
- 2018-11-19 MA MA49867A patent/MA49867A1/en unknown
- 2018-11-19 CA CA3083553A patent/CA3083553A1/en active Pending
- 2018-11-19 CN CN201880076517.5A patent/CN111406091A/en active Pending
- 2018-11-19 WO PCT/EP2018/081689 patent/WO2019101667A1/en unknown
- 2018-11-19 EP EP18800669.6A patent/EP3717553A1/en not_active Withdrawn
- 2018-11-22 TW TW107141632A patent/TW201925295A/en unknown
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2020
- 2020-05-24 IL IL274859A patent/IL274859A/en unknown
- 2020-06-24 ZA ZA2020/03832A patent/ZA202003832B/en unknown
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BR112020010372A2 (en) | 2020-10-20 |
ZA202003832B (en) | 2022-03-30 |
TW201925295A (en) | 2019-07-01 |
JP2021504523A (en) | 2021-02-15 |
US20210095092A1 (en) | 2021-04-01 |
MX2020005297A (en) | 2020-08-13 |
WO2019101667A1 (en) | 2019-05-31 |
CA3083553A1 (en) | 2019-05-31 |
AU2018371107A1 (en) | 2020-07-09 |
CN111406091A (en) | 2020-07-10 |
IL274859A (en) | 2020-07-30 |
KR20200084898A (en) | 2020-07-13 |
MA49867A1 (en) | 2020-12-31 |
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