EP3818096A1 - Utilisation de mousses de peba pour le filtrage des vibrations - Google Patents
Utilisation de mousses de peba pour le filtrage des vibrationsInfo
- Publication number
- EP3818096A1 EP3818096A1 EP19753138.7A EP19753138A EP3818096A1 EP 3818096 A1 EP3818096 A1 EP 3818096A1 EP 19753138 A EP19753138 A EP 19753138A EP 3818096 A1 EP3818096 A1 EP 3818096A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- polyamide
- blocks
- mol
- foam
- peba
- 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- Withdrawn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
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/40—Polyamides containing oxygen in the form of ether groups
-
- 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
- C08J9/04—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
- C08J9/06—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 chemical blowing agent
-
- 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
- C08J9/04—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
- 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
-
- 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
- C08J9/04—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
- 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
- C08J9/14—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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/3605—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by their material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/37—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers of foam-like material, i.e. microcellular material, e.g. sponge rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2101/00—Manufacture of cellular products
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/06—CO2, N2 or noble gases
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
-
- 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
- C08J2207/00—Foams characterised by their intended use
-
- 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
- C08J2371/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
- C08J2371/02—Polyalkylene oxides
-
- 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
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
Definitions
- the present invention relates to the use of a polyamide block and polyether block copolymer foam for filtering vibrations.
- the document FR 3047245 describes PEBA foams having a high capacity to restore elastic energy during stresses under low stress, a low remanent deformation in compression and a high resistance to fatigue in compression. These foams also have interesting anti-shock, anti-vibration and anti-noise properties. However, no vibration filtering properties are mentioned.
- the invention relates first of all to the use of a polyamide block and polyether block copolymer foam for filtering vibrations.
- the foam is non-crosslinked.
- the polyamide blocks are blocks of polyamide 6, polyamide 11, polyamide 12, polyamide 5.4, polyamide 5.9, polyamide 5.10, polyamide 5.12, polyamide 5.13, polyamide 5.14, polyamide 5.16, polyamide 5.18, polyamide 5.36, polyamide 6.4, polyamide 6.9, polyamide 6.10, polyamide 6.12, polyamide 6.13, polyamide 6.14, polyamide 6.16, polyamide 6.18, polyamide 6.36, polyamide 10.4, polyamide 10.9, polyamide 10.10, polyamide 10.12 , polyamide 10.13, polyamide 10.14, polyamide 10.16, polyamide 10.18, polyamide 10.36, polyamide 10.T, polyamide 12.4, polyamide 12.9, polyamide 12.10, polyamide 12.12, polyamide 12.13, polyamide 12.14 , polyamide 12.16, polyamide 12.18, polyamide 12.36, polyamide 12.T or mixtures, or copolymers, of these, preferably polyamide 1 1, polyamide 12, polyamide 6, or polyamide 6.10 .
- the polyether blocks are blocks of polyethylene glycol, propylene glycol, polytrimethylene glycol, polytetrahydrofuran, or mixtures, or copolymers, of these, preferably polyethylene glycol or polytetrahydrofuran.
- the polyamide blocks of the copolymer have a number-average molar mass of 100 to 20,000 g / mol, preferably from 200 to 10,000 g / mol, even more preferably from 200 to 1,500 g / mol; and or
- the polyether blocks of the copolymer have a number-average molar mass of 100 to 6000 g / mol, preferably from 200 to 3000 g / mol, even more preferably from 800 to 2500 g / mol.
- the mass ratio of the polyamide blocks relative to the polyether blocks of the copolymer is from 0.1 to 10, preferably from 0.3 to 3, even more preferably from 0.3 to 0.9.
- the foam has a density less than or equal to 800 kg / m 3 , preferably less than or equal to 600 kg / m 3 , more preferably less than or equal to 400 kg / m 3 , more particularly preferably less than or equal to 300 kg / m 3 .
- the foam also contains one or more additives, preferably chosen from copolymers of ethylene and vinyl acetate, copolymers of ethylene and acrylate, and copolymers of ethylene and of alkyl ( meth) acrylate.
- the invention also relates to a vibration filtering piece made of a polyamide block and polyether block copolymer foam as defined above.
- the invention also relates to a vibration filtering part comprising at least one element made of a polyamide block and polyether block copolymer foam as defined above.
- the vibration filtering part is chosen from among household robot feet, such as mixers and mixers, automotive parts or any vehicle, such as the suspension devices of motor vehicle gearboxes. , or the suspension devices of helicopter gearboxes.
- the present invention makes it possible to meet the need expressed above. More particularly, it provides a polymer foam, light and recyclable, making it possible to effectively filter vibrations.
- FIG. 1 represents the curve obtained by dynamic mechanical analysis during the measurement of the delta tangents of the foamed PEBA B (gray dotted curve) and of the non-foamed PEBA B (black curve in solid line) described in Example 2.
- FIG. 2 represents the curve obtained by dynamic mechanical analysis during the measurement of the delta tangents of the foamed PEBA A-2 described in example 3.
- the frequency (in Hz) is shown on the abscissa and the delta tangent is shown on the ordinate.
- the invention relates to the use of a polyamide block and polyether block (PEBA) copolymer foam for filtering vibrations.
- PEBA polyether block
- Filtering vibrations consists in cutting off high frequencies, that is to say frequencies higher than the product of the natural frequency of the object made of filter material multiplied by 1.4.
- PEBAs result from the polycondensation of polyamide blocks with reactive ends with polyether blocks with reactive ends, such as, inter alia polycondensation: 1) polyamide blocks with diamine chain ends with polyoxyalkylene blocks with dicarboxylic chain ends;
- polyamide blocks with ends of dicarboxylic chains with polyoxyalkylene blocks with ends of diamine chains obtained for example by cyanoethylation and hydrogenation of polyoxyalkylene blocks a, w- aliphatic dihydroxylates called polyetherdiols;
- Polyamide blocks with dicarboxylic chain ends originate, for example, from the condensation of polyamide precursors in the presence of a chain-limiting dicarboxylic acid.
- Polyamide blocks with diamine chain ends originate, for example, from the condensation of polyamide precursors in the presence of a chain limiting diamine.
- Three types of polyamide blocks can advantageously be used.
- the polyamide blocks come from the condensation of a dicarboxylic acid, in particular those having from 4 to 20 carbon atoms, preferably those having from 6 to 18 carbon atoms, and from an aliphatic or aromatic diamine , in particular those having from 2 to 20 carbon atoms, preferably those having from 6 to 14 carbon atoms.
- dicarboxylic acids mention may be made of 1,4-cyclohexyldicarboxylic acid, butanedioic, adipic, azelaic, suberic, sebacic, dodecanedicarboxylic, octadecanedicarboxylic acids and terephthalic and isophthalic acids, but also dimerized fatty acids .
- diamines examples include tetramethylene diamine, hexamethylenediamine, 1, 10-decamethylenediamine, dodecamethylenediamine, trimethylhexamethylene diamine, isomers of bis- (4-aminocyclohexyl) -methane (BACM), bis - (3-methyl-4-aminocyclohexyl) methane (BMACM), and 2-2-bis- (3-methyl-4-aminocyclohexyl) -propane (BMACP), para-amino-di-cyclo-hexyl-methane ( PACM), isophoronediamine (IPDA), 2,6-bis- (aminomethyl) -norbornane (BAMN) and piperazine (Pip).
- BCM bis- (4-aminocyclohexyl) -methane
- BMACM bis - (3-methyl-4-aminocyclohexyl) methane
- BMACP
- polyamide blocks PA 4.12, PA 4.14, PA 4.18, PA 6.10, PA 6.12, PA 6.14, PA 6.18, PA 9.12, PA 10.10, PA 10.12, PA 10.14 and PA 10.18 are used.
- PA XY notation X represents the number of carbon atoms derived from diamine residues
- Y represents the number of carbon atoms derived from diacid residues, in a conventional manner.
- the polyamide blocks result from the condensation of one or more ⁇ , w-aminocarboxylic acids and / or from one or more lactams having from 6 to 12 carbon atoms in the presence of a dicarboxylic acid having from 4 to 12 carbon atoms or a diamine.
- lactams examples include caprolactam, enantholactam and lauryllactam.
- ⁇ , w-amino carboxylic acid mention may be made of aminocaproic, amino-7-heptanoic, amino-11-undecanoic and amino-12-dodecanoic acids.
- the polyamide blocks of the second type are blocks of PA 1 1 (polyundecanamide), of PA 12 (polydodecanamide) or of PA 6 (polycaprolactam).
- PA 1 1 polyundecanamide
- PA 12 polydodecanamide
- PA 6 polycaprolactam
- X represents the number of carbon atoms derived from the amino acid residues.
- the polyamide blocks result from the condensation of at least one ⁇ , w-aminocarboxylic acid (or a lactam), at least one diamine and at least one dicarboxylic acid.
- polyamide PA blocks are prepared by polycondensation:
- the dicarboxylic acid having Y carbon atoms which is introduced in excess relative to the stoichiometry of the diamine or diamines, is used as chain limiter.
- the polyamide blocks result from the condensation of at least two ⁇ , w-aminocarboxylic acids or of at least two lactams having from 6 to 12 carbon atoms or from a lactam and a aminocarboxylic acid not having the same number of atoms carbon in the possible presence of a chain limiter.
- aliphatic ⁇ , w-aminocarboxylic acid mention may be made of aminocaproic, amino-7-heptanoic, amino-11-undecanoic and amino-12-dodecanoic acids.
- lactams mention may be made of caprolactam, oenantholactam and lauryllactam.
- aliphatic diamines mention may be made of hexamethylenediamine, dodecamethylenediamine and trimethylhexamethylene diamine.
- cycloaliphatic diacids mention may be made of 1,4-cyclohexyldicarboxylic acid. Mention may be made, as examples of aliphatic diacids, of butane-dioic, adipic, azelaic, suberic, sebacic, dodecanedicarboxylic acids and dimerized fatty acids.
- dimerized fatty acids preferably have a dimer content of at least 98%; preferably they are hydrogenated; these are for example the products marketed under the brand name "PRIPOL” by the company “CRODA”, or under the brand EMPOL by the company BASF, or under the brand Radiacid by the company OLEON, and polyoxyalkylenes a, w-diacids . Mention may be made, as examples of aromatic diacids, of terephthalic (T) and isophthalic (I) acids.
- T terephthalic
- I isophthalic
- cycloaliphatic diamines examples include the isomers of bis- (4-aminocyclohexyl) -methane (BACM), bis- (3-methyl-4-aminocyclohexyl) methane (BMACM) and 2-2-bis- (3-methyl-4-aminocyclohexyl) - propane (BMACP), and para-amino-di-cyclo-hexyl-methane (PACM).
- BMACM bis- (4-aminocyclohexyl) -methane
- BMACM bis- (3-methyl-4-aminocyclohexyl) methane
- BMACP 2-2-bis- (3-methyl-4-aminocyclohexyl) - propane
- PAM para-amino-di-cyclo-hexyl-methane
- IPDA isophoronediamine
- BAMN 2,6-bis- (aminomethyl) -norbornane
- polyamide blocks of the third type As examples of polyamide blocks of the third type, the following may be cited:
- PA X / Y, PA X / Y / Z, etc. relate to copolyamides in which X, Y, Z, etc. represent homopolyamide units as described above.
- the polyamide blocks of the copolymer used in the invention comprise polyamide blocks PA 6, PA 11, PA 12, PA 5.4, PA 5.9, PA 5.10, PA 5.12, PA 5.13, PA 5.14, PA 5.16, PA 5.18, PA 5.36, PA 6.4, PA 6.9, PA 6.10, PA 6.12, PA 6.13, PA 6.14, PA 6.16, PA 6.18, PA 6.36, PA 10.4, PA 10.9, PA 10.10, PA 10.12, PA 10.13, PA 10.14, PA 10.16 , PA 10.18, PA 10.36, PA 10.T, PA 12.4, PA 12.9, PA 12.10, PA 12.12, PA 12.13, PA 12.14, PA 12.16, PA 12.18, PA 12.36, PA 12.T, or mixtures or copolymers of these; and preferably comprise blocks of polyamide PA 6, PA 11, PA 12, PA 6.
- Polyether blocks are made up of alkylene oxide units.
- the polyether blocks may in particular be PEG blocks (polyethylene glycol), that is to say made up of ethylene oxide units, and / or PPG blocks (propylene glycol), that is to say made up of propylene oxide units, and / or P03G blocks (polytrimethylene glycol), that is to say made up of polytrimethylene glycol ether units, and / or PTMG blocks, that is to say made up of tetramethylene glycol units also called polytetrahydrofuran.
- PEBA copolymers can comprise in their chain several types of polyethers, the copolyethers possibly being block or random.
- the polyether blocks can also consist of ethoxylated primary amines.
- ethoxylated primary amines mention may be made of the products of formula:
- m and n are integers between 1 and 20 and x an integer between 8 and 18.
- These products are for example commercially available under the brand NORAMOX® from the company CECA and under the brand GENAMIN® from the company Clariant.
- the flexible polyether blocks can comprise polyoxyalkylene blocks with ends of Nhh chains, such blocks being obtainable by cyanoacetylation of polyoxyalkylene a, w-dihydroxylated aliphatic blocks called polyetherdiols.
- the commercial products Jeffamine or Elastamine can be used (for example Jeffamine® D400, D2000, ED 2003, XTJ 542, commercial products of the company Huntsman, also described in documents JP 2004346274, JP 2004352794 and EP 148201 1).
- the polyetherdiol blocks are either used as such and copolycondensed with polyamide blocks with carboxylic ends, or aminated to be transformed into polyether diamines and condensed with polyamide blocks with carboxylic ends.
- the general method for the preparation in two stages of the PEBA copolymers having ester bonds between the PA blocks and the PE blocks is known and is described, for example, in document FR 2846332.
- the general method of preparing the PEBA copolymers of the invention having amide bonds between the PA blocks and the PE blocks is known and described, for example in document EP 148201 1.
- the polyether blocks can also be mixed with polyamide precursors and a diacid chain limiter to prepare polymers with polyamide blocks and polyether blocks having units distributed in a statistical manner (one-step process).
- PEBA in the present description of the invention relates as well to PEBAX® marketed by Arkema, to Vestamid® marketed by Evonik®, to Grilamid® marketed by EMS, as to Pelestat® type PEBA marketed by Sanyo or any other PEBA from other suppliers.
- block copolymers described above generally comprise at least one polyamide block and at least one polyether block
- the present invention also covers all the alloys of copolymers comprising two, three, four (or even more) different blocks chosen from those described in the present description, since these blocks comprise at least polyamide and polyether blocks.
- the copolymer alloy according to the invention can comprise a segmented block copolymer comprising three different types of blocks (or "triblock"), which results from the condensation of several of the blocks described above.
- Said triblock is preferably chosen from copolyetheresteramides and copolyetheramideurethanes.
- PEBA copolymers which are particularly preferred in the context of the invention are copolymers comprising blocks:
- the foam according to the invention comprises a PEBA copolymer as described above: preferably only one such copolymer is used. However, it is possible to use a mixture of two or more of two PEBA copolymers as described above.
- the number-average molar mass of the polyamide blocks in the PEBA copolymer is preferably from 100 to 20,000 g / mol, more preferably from 200 to 10,000 g / mol, even more preferably from 200 to 1,500 g / mol.
- the number-average molar mass of the polyamide blocks in the PEBA copolymer is from 100 to 200 g / mol, or from 200 to 500 g / mol, or from 500 to 1000 g / mol, or from 1000 to 1500 g / mol, or from 1500 to 2000 g / mol, or from 2000 to 2500 g / mol, or from 2500 to 3000 g / mol, or from 3000 to 3500 g / mol, or from 3500 to 4000 g / mol, or from 4000 to 5000 g / mol, or from 5000 to 6000 g / mol, or from 6000 to 7000 g / mol, or from 7000 to 8000 g / mol, or from 8000 to 9000 g / mol, or from 9000 to 10000 g / mol, or from 10000 to 1100 g / mol, or from 1000 to 12000 g / mol, or from 12000
- the number-average molar mass of the polyether blocks is preferably from 100 to 6000 g / mol, more preferably from 200 to 3000 g / mol, even more preferably from 800 to 2500 g / mol.
- the number-average molar mass of the polyether blocks is from 100 to 200 g / mol, or from 200 to 500 g / mol, or from 500 to 800 g / mol, or from 800 to 1000 g / mol , or from 1000 to 1500 g / mol, or from 1500 to 2000 g / mol, or from 2000 to 2500 g / mol, or from 2500 to 3000 g / mol, or from 3000 to 3500 g / mol, or from 3500 to 4000 g / mol, or from 4000 to 4500 g / mol, or from 4500 to 5000 g / mol, or from 5000 to 5500 g / mol, or from 5500 to 6000 g
- the number-average molar mass is fixed by the content of chain limiter. It can be calculated according to the relation:
- n monomer X MW repetition motif / chain niimator MW Chain limiter
- n monomer is the number of moles of monomer or im chain itor represents the number of moles limiter (e.g., diacid) excess repetition MWmotif represents the molar mass of the repeating unit
- chain MWiimiteur represents the molar mass of the limiter (for example diacid) in excess.
- the number-average molar mass of the polyamide blocks and of the polyether blocks can be measured before the copolymerization of the blocks by chromatography on permeable gel (GPC).
- the mass ratio of the polyamide blocks relative to the polyether blocks of the copolymer is from 0.1 to 10, preferably from 0.3 to 3, even more preferably from 0.3 to 0.9.
- the mass ratio of the polyamide blocks relative to the polyether blocks of the copolymer can be from 0.1 to 0.2, or from 0.2 to 0.3, or from 0.3 to 0.4, or from 0 , 4 to 0.5, or 0.5 to 0.6, or 0.6 to 0.7, or 0.7 to 0.8, or 0.8 to 0.9, or 0 , 9 to 1, or 1 to 1, 5, or 1, 5 to 2, or 2 to 2.5, or 2.5 to 3, or 3 to 3.5, or 3.5 to 4, or from 4 to 4.5, or from 4.5 to 5, or from 5 to 5.5, or from 5.5 to 6, or from 6 to 6.5, or from 6.5 to 7 , or from 7 to 7.5, or from 7.5 to 8, or from 8 to 8.5, or from 8.5 to 9, or from 9 to 9.5, or from 9.5 to 10.
- the copolymer used in the invention has an instantaneous hardness less than or equal to 40 Shore D, more preferably less than or equal to 35 Shore D.
- the hardness measurements can be carried out according to ISO standard 868.
- the polyamide block and polyether block copolymer is used to form a foam, preferably without a crosslinking step.
- the foam is formed by mixing the copolymer in the molten state with a blowing agent and then performing a foaming step.
- the foam thus formed essentially consists, or even consists, of the copolymer described above (or the copolymers, if a mixture of copolymers is used) and optionally the blowing agent, if the latter remains present in the pores of the foam, especially if it is a closed pore foam.
- the polyamide block and polyether block copolymer can be combined with various additives, for example copolymers of ethylene and vinyl acetate or EVA (for example those marketed under the name of Evatane® by Arkema), or copolymers of ethylene and acrylate, or copolymers of ethylene and alkyl (meth) acrylate, for example those sold under the name Lotryl® by Arkema.
- EVA for example those marketed under the name of Evatane® by Arkema
- copolymers of ethylene and acrylate for example those sold under the name Lotryl® by Arkema
- These additives can be used to adjust the hardness of the foamed part, its appearance and its comfort.
- the additives can be added in a content of 0 to 50% by mass, preferably from 5 to 30% by mass, relative to the copolymer with polyamide blocks and with polyether blocks.
- the blowing agent can be a chemical or physical agent.
- it is a physical agent, such as, for example, dinitrogen or carbon dioxide, or a hydrocarbon, chlorofluorocarbon, hydrochlorocarbon, hydrofluorocarbon or hydrochlorofluorocarbon (saturated or unsaturated).
- a physical agent such as, for example, dinitrogen or carbon dioxide, or a hydrocarbon, chlorofluorocarbon, hydrochlorocarbon, hydrofluorocarbon or hydrochlorofluorocarbon (saturated or unsaturated).
- butane or pentane can be used.
- a physical blowing agent is mixed with the copolymer in liquid or supercritical form, then converted to the gas phase during the foaming step.
- the mixture of the copolymer and the blowing agent is injected into a mold, and the foaming is produced by the opening of the mold.
- foaming techniques that can be used include batch foaming and extrusion foaming.
- the foam according to the invention preferably has a density less than or equal to 800 kg / m 3 , more preferably less than or equal to 600 kg / m 3 , more particularly preferably less than or equal to 400 kg / m 3 , or even less or equal to 300 kg / m 3 . It can for example have a density of 50 to 800 kg / m 3 , and more particularly preferably from 100 to 600 kg / m 3 . Density control can be achieved by adapting the parameters of the manufacturing process.
- this foam has a rebound resilience, according to ISO 8307, greater than or equal to 55%.
- this foam has a residual compression deformation, according to ISO 7214, less than or equal to 10%, and more particularly preferably less than or equal to 8%.
- this foam also has excellent fatigue resistance and damping properties.
- the foam according to the invention can be used to manufacture vibration filtering parts.
- it can be the feet of household robots, such as blenders and kitchen mixers.
- It can also be auto parts or parts of any vehicle, such as air or water vehicles, for example helicopters, airplanes, boats. Examples of such filtration parts are: suspension devices for motor vehicle gearboxes, suspension devices for helicopter transmission boxes.
- An advantage of the foam objects according to the invention is that they can be easily recycled, for example by melting them in an extruder equipped with a degassing outlet (optionally after cutting them into pieces).
- the tangent delta (tan delta) of the PEBA is calculated by the ratio of the dissipative module (or "loss module", E ") on the elastic module (or" storage modulus ", E ').
- the dissipative module E "and the elastic module E” are measured by dynamic mechanical analysis (DMA).
- a foam is formed from a PEBA A (called “PEBA A-1 foamed"). Foamed PEBA A-1 has a density of 0.65 g / cm 3 .
- PEBA A is a block copolymer of PA1 1 and of PTMG blocks of density 1.02 g / cm 3 , having a melting temperature of 135 ° C and a hardness of 32 Shore D 15s.
- Foamed PEBA A-1 is compared to non-foamed PEBA A.
- the delta tangent of PEBA A-1 foamed and PEBA A unfoamed is measured as indicated above.
- the operating conditions for the measurement of the dissipative module E "and of the elastic module E" by DMA are as follows:
- Foamed PEBA A-1 has a delta tangent lower than that of non-foamed PEBA A, therefore it has a better vibration filtering property at the temperatures tested.
- a foam is formed from a PEBA B (called “foamed PEBA B").
- Foamed PEBA B has a density of 0.1 g / cm 3 .
- PEBA B is a PA12 block and PTMG block copolymer with a density of 1.01 g / cm 3 , having a melting temperature of 159 ° C. and a hardness of 50 Shore D 15 s.
- Foamed PEBA B is compared to unfoamed PEBA B.
- the delta tangent of the foamed PEBA B and the non-foamed PEBA B is measured as indicated above.
- the operating conditions for the measurement of the dissipative module E "and of the elastic module E" by DMA are identical to those of example 1.
- Foamed PEBA B has a lower delta tangent than unfoamed PEBA B, therefore it has a better vibration filtering property at the temperatures tested.
- a foam is formed from PEBA A (called "PEBA A-2 foamed"). Foamed PEBA A-2 has a density of 0.2 g / cm 3 . The tangent delta of the foamed PEBA A-2 is measured as indicated above.
- the operating conditions for the measurement of the dissipative module E ”and of the elastic module E 'by DMA are as follows:
- PEBA A-2 foam has a very low tangent delta over a wide frequency range at 20 ° C.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Polyamides (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1856127A FR3083540B1 (fr) | 2018-07-03 | 2018-07-03 | Utilisation de mousses de peba pour le filtrage des vibrations |
| PCT/FR2019/051626 WO2020008134A1 (fr) | 2018-07-03 | 2019-07-02 | Utilisation de mousses de peba pour le filtrage des vibrations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3818096A1 true EP3818096A1 (fr) | 2021-05-12 |
Family
ID=63312147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19753138.7A Withdrawn EP3818096A1 (fr) | 2018-07-03 | 2019-07-02 | Utilisation de mousses de peba pour le filtrage des vibrations |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3818096A1 (fr) |
| CN (1) | CN112368319B (fr) |
| FR (1) | FR3083540B1 (fr) |
| TW (1) | TWI808212B (fr) |
| WO (1) | WO2020008134A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102567593B1 (ko) * | 2018-12-19 | 2023-08-16 | 에보닉 오퍼레이션스 게엠베하 | 폴리에테르 블록 아미드 (peba) 를 함유하는 성형 화합물 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018146426A1 (fr) * | 2017-02-08 | 2018-08-16 | Arkema France | Composition de mousse de copolymère à blocs polyamides et à blocs polyéthers non réticule |
| WO2019097178A1 (fr) * | 2017-11-17 | 2019-05-23 | Arkema France | Mousse de copolymere a blocs |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2748207A1 (de) * | 1976-11-05 | 1978-05-18 | Ciba Geigy Ag | Sulfonyl-tetrazole als chemische treibmittel |
| DE3808275A1 (de) * | 1988-03-12 | 1989-09-21 | Bayer Ag | Brandschutzelemente |
| US5128073A (en) * | 1989-10-26 | 1992-07-07 | General Electric Company | Expanding thermoplastic resin beads with very high frequency energy |
| US5652326A (en) | 1993-03-03 | 1997-07-29 | Sanyo Chemical Industries, Ltd. | Polyetheresteramide and antistatic resin composition |
| DE4428520C2 (de) * | 1994-08-11 | 1998-09-17 | Inventa Ag | Schwingungsdämpfendes Bau- oder Funktionselement |
| DE60121452T2 (de) * | 2001-12-05 | 2007-02-08 | Jsp Corp. | Mehrschichtiger laminierter Polyolefinschaum |
| FR2846332B1 (fr) | 2002-10-23 | 2004-12-03 | Atofina | Copolymeres transparents a blocs polyamides et blocs polyethers |
| JP4193588B2 (ja) | 2003-05-26 | 2008-12-10 | 宇部興産株式会社 | ポリアミド系エラストマー |
| US7056975B2 (en) | 2003-05-27 | 2006-06-06 | Ube Industries, Ltd. | Thermoplastic resin composition having improved resistance to hydrolysis |
| JP4161802B2 (ja) | 2003-05-27 | 2008-10-08 | 宇部興産株式会社 | ポリアミド組成物 |
| EP1833566A2 (fr) * | 2004-12-20 | 2007-09-19 | Meridian Research and Development | Articles detectables par rayonnement et de protection |
| EP1783156A1 (fr) * | 2005-11-03 | 2007-05-09 | Arkema France | Procédé de fabrication de copolymères ayant des blocs polyamide et polyether |
| CN105080781A (zh) * | 2014-05-22 | 2015-11-25 | 劲捷生物科技股份有限公司 | 加速黏合剂固化反应的涂布器及方法 |
| FR3047245B1 (fr) * | 2016-01-29 | 2018-02-23 | Arkema France | Mousse de copolymere a blocs polyamides et a blocs polyethers |
| CN106084447B (zh) * | 2016-05-13 | 2018-08-14 | 宁波大学 | 一种热塑性高分子组合物发泡开孔材料及其制备方法 |
| CN107778516A (zh) * | 2017-10-19 | 2018-03-09 | 宁波致微新材料科技有限公司 | 一种聚合物微孔发泡材料的制备方法 |
-
2018
- 2018-07-03 FR FR1856127A patent/FR3083540B1/fr not_active Expired - Fee Related
-
2019
- 2019-07-02 WO PCT/FR2019/051626 patent/WO2020008134A1/fr not_active Ceased
- 2019-07-02 TW TW108123300A patent/TWI808212B/zh not_active IP Right Cessation
- 2019-07-02 EP EP19753138.7A patent/EP3818096A1/fr not_active Withdrawn
- 2019-07-02 CN CN201980044005.5A patent/CN112368319B/zh active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018146426A1 (fr) * | 2017-02-08 | 2018-08-16 | Arkema France | Composition de mousse de copolymère à blocs polyamides et à blocs polyéthers non réticule |
| WO2019097178A1 (fr) * | 2017-11-17 | 2019-05-23 | Arkema France | Mousse de copolymere a blocs |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2020008134A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| TW202006020A (zh) | 2020-02-01 |
| FR3083540A1 (fr) | 2020-01-10 |
| TWI808212B (zh) | 2023-07-11 |
| WO2020008134A1 (fr) | 2020-01-09 |
| CN112368319B (zh) | 2023-12-19 |
| CN112368319A (zh) | 2021-02-12 |
| FR3083540B1 (fr) | 2021-01-08 |
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