EP3814417A1 - Composition (meth) acrylique, materiau composite obtenu a partir d'une telle composition, son procede de fabrication et ses utilisations - Google Patents
Composition (meth) acrylique, materiau composite obtenu a partir d'une telle composition, son procede de fabrication et ses utilisationsInfo
- Publication number
- EP3814417A1 EP3814417A1 EP19748864.6A EP19748864A EP3814417A1 EP 3814417 A1 EP3814417 A1 EP 3814417A1 EP 19748864 A EP19748864 A EP 19748864A EP 3814417 A1 EP3814417 A1 EP 3814417A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- meth
- acrylic
- tert
- weight
- monomer
- 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
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/10—Homopolymers or copolymers of methacrylic acid esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
- C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
- C08F265/06—Polymerisation of acrylate or methacrylate esters on to polymers thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
Definitions
- the present invention relates to a (meth) acrylic composition as well as to a composite material obtained by polymerization of such a (meth) acrylic composition, this material being endowed with particularly efficient mechanical properties.
- the invention also relates to a manufacturing process as well as to the uses of such a material which can be used in many industrial sectors.
- Document [1] relates more particularly to a composite material comprising a thermoplastic (meth) acrylic matrix and a reinforcement formed by a fibrous material which may have different shapes and dimensions and be of natural or synthetic origin.
- the thermoplastic (meth) acrylic matrix can in particular be obtained from a viscous liquid composition, called "liquid (meth) acrylic syrup", which comprises (meth) acrylic monomers, or mixtures of (meth) acrylic monomers, and oligomers or polymers dissolved in these monomers.
- document [2] proposes to implement a liquid (meth) acrylic syrup which has a dynamic viscosity, at 25 ° C., falling within an interval of 10 mPa. s at 10,000 mPa.s.
- This liquid (meth) acrylic syrup comprises a (meth) acrylic polymer and a (meth) acrylic monomer.
- Document [3] proposes an improvement in the (meth) acrylic compositions taught by documents [1] and [2] so as to obtain practically complete polymerization by significantly reducing the level of monomers (meth). residual acrylics and to limit the shrinkage phenomenon observed after molding.
- the (meth) acrylic composition taught by document [3] comprises a (meth) acrylic syrup comprising a (meth) acrylic polymer and a (meth) acrylic monomer, as well as fillers chosen from particles having a level of swelling in the (meth) acrylic monomer less than 200%, the swelling rate being defined as being the capacity of a particle immersed in a compound to change volume, and an average diameter D50 less than 50 ⁇ m.
- These fillers are more particularly chosen from hollow glass beads and polymethyl methacrylate beads (RMMD) crosslinked with a crosslinking agent.
- RMMD polymethyl methacrylate beads
- Another object of the present invention is to provide a method of manufacturing such a composite material, this method being easy to implement and making it possible to obtain the material in a limited number of steps in the equipment and tools for industrial installations currently used for the manufacture of composite materials.
- this (meth) acrylic composition comprises:
- the composite material obtained after polymerization of a (meth) acrylic composition in accordance with the invention has mechanical properties, in particular evaluated by measuring the tensile strength and elasticity module, evaluated by ISO 527-1: 2012, particularly efficient.
- the (meth) acrylic composition according to the invention comprises, in specific weight proportions, a liquid (meth) acrylic syrup, an inorganic filler C, (meth) acrylic monomers M2 and M3 as well as a polymerization initiator .
- the liquid (meth) acrylic syrup comprises:
- (meth) acrylic monomer covers both an acrylic monomer and a methacrylic monomer.
- (meth) acrylic polymer covers both an acrylic homopolymer, a methacrylic homopolymer, an acrylic copolymer and a methacrylic copolymer.
- the liquid (meth) acrylic syrup of the (meth) acrylic composition according to the invention may comprise only one (meth) acrylic polymer PI but may just as well comprise a mixture of two, three, or even more, polymers (meth) acrylic PI.
- the or each (meth) acrylic polymer PI included in the liquid (meth) acrylic syrup can, in particular, be chosen from:
- polyalkyl acrylates which include homopolymers of alkyl acrylate and copolymers of alkyl acrylate, and
- polymethyl alkyl methacrylates which include homopolymers of alkyl methacrylate and copolymers of alkyl methacrylate.
- the or each (meth) acrylic polymer PI is a polymethyl methacrylate (RMMD), it being understood that, as indicated above, the polymethyl methacrylate (RMMD) can denote a homopolymer of methyl methacrylate (MMA) or an MMA copolymer.
- RMMD polymethyl methacrylate
- this mixture can be formed by a mixture of at least two homopolymers of MMD having a weight different molecular, by a mixture of at least two copolymers of MMD having an identical monomer composition and a different molecular weight, by a mixture of at least two copolymers of MMA having a different monomer composition or also by a mixture of at least one homopolymer of MMA and at least one copolymer of MMA.
- methyl methacrylate represents at least 50% by weight of the or each (meth) acrylic polymer PI.
- the or each (meth) acrylic polymer PI comprises at least 70%, advantageously at least 80%, preferably at least 90%, and more preferably at least 95%, by weight of methacrylate. methyl.
- the or each (meth) acrylic polymer PI is a copolymer of methyl methacrylate (MMA), it may comprise at least one comonomer containing at least one ethylenic unsaturation and being capable of copolymerizing with methyl methacrylate.
- comonomers mention may in particular be made of acrylic and methacrylic acids and alkyl (meth) acrylates in which the alkyl group contains from 1 to 12 carbon atoms. Mention may be made, as examples of comonomers, of methyl acrylate and ethyl, butyl or 2-ethylhexyl (meth) acrylate.
- the or each (meth) acrylic polymer PI is a copolymer of methyl methacrylate and of alkyl acrylate in which the alkyl group contains from 1 to 12 carbon atoms, advantageously from 1 to 6 atoms carbon and, preferably, from 1 to 4 carbon atoms.
- this copolymer of methyl methacrylate (MMA) comprises from 70% to 99.9%, advantageously from 80% to 99.8%, preferably from 90% to 99.8%, and more preferably from 90% to 99.7%, by weight of methyl methacrylate and from 0.1% to 30%, advantageously from 0.2% to 20%, preferably 0.2% to 10%, and more preferably from 0.3% to 10%, by weight of at least one comonomer containing at least one ethylenic unsaturation which can copolymerize with methyl methacrylate.
- the or each comonomer is chosen from methyl acrylate and ethyl acrylate.
- the (meth) acrylic polymer PI is a copolymer of methyl methacrylate and of alkyl acrylate.
- the (meth) acrylic polymer PI is a copolymer of methyl methacrylate and methyl acrylate.
- the weight average molecular weight, denoted by M w , of the or each (meth) acrylic polymer PI is generally high and can therefore be greater than 40,000 g / mol, advantageously greater than 50,000 g / mol and, preferably, greater than 60,000 g / mol.
- the weight average molecular weight can be measured by size exclusion chromatography (SEC).
- the or each (meth) acrylic polymer PI advantageously has a hot melt mass index (MFR) according to ISO 1133-2: 2011 (230 ° C / 3.8 kg) between 0, lg / 10 min and 20g / 10min.
- MFR hot melt mass index
- the mass melt flow index is between 0.2g / 10min and 18g / 10min, advantageously between 0.3g / 10min and 16g / 10min and, preferably, between 0.4g / 10min and 13g / 10 minutes.
- the liquid (meth) acrylic syrup of the (meth) acrylic composition according to the invention may comprise only one (meth) acrylic monomer Ml but may just as well comprise a mixture of two, three, or even more, monomers (meth) acrylics Ml.
- liquid (meth) acrylic syrup comprises one or more (meth) acrylic monomers Ml, the or each (meth) acrylic monomer Ml only comprises one (meth) acrylic function per monomer.
- the or each (meth) acrylic monomer Ml can, in particular, be chosen from acrylic monomers and methacrylic monomers, in particular from methacrylates and acrylates which are cited in paragraph [0032] of document US 2006/0251906 A1 , referenced [4].
- the or each (meth) acrylic monomer Ml is chosen from acrylic acid, methacrylic acid, acrylic alkyl monomers, methacrylic alkyl monomers, the alkyl group of these (meth) monomers acrylics which can be linear, branched or cyclic, and containing from 1 to 22, advantageously from 1 to 12 and, preferably, from 1 to 6 carbon atoms.
- the or each (meth) acrylic monomer Ml is chosen from acrylic acid, methacrylic acid, methyl methacrylate, ethyl methacrylate, methyl acrylate, 1 'acrylate ethyl, n-butyl acrylate, iso-butyl acrylate, cyclohexyl acrylate, cyclohexyl methacrylate, iso-bornyl acrylate, iso-bornyl methacrylate, methacrylate d heptyle, n-octyl acrylate, 2-octyl acrylate, iso-octyl acrylate, 2-ethylhexyl methacrylate, butyldiglycol methacrylate, dicyclopentenyloxyethyl methacrylate, ethoxyethyl methacrylate , iso-butyl methacrylate, n-butyl methacrylate, ter
- the (meth) acrylic monomer Ml is methyl methacrylate.
- the (meth) acrylic syrup comprises a (meth) acrylic monomer Ml
- this monomer Ml is methyl methacrylate.
- the (meth) acrylic syrup comprises two, or more than two, (meth) acrylic monomers Ml
- methyl methacrylate is, among the (meth) acrylic monomers Ml, the (meth) acrylic monomer Ml whose majority by weight .
- methyl methacrylate represents at least 50% by weight, advantageously at least 60% by weight, more advantageously at least 70% by weight, preferably at least 80% by weight, and more preferably at least 90% by weight, of the (meth) acrylic monomers Ml.
- (meth) liquid acrylic includes:
- (meth) liquid acrylic includes:
- the or each (meth) acrylic polymer PI and the or each (meth) acrylic monomer Ml of the liquid (meth) acrylic syrup comprise at least one and the same (meth) acrylic unit, such a variant making it possible to '' optimize the solubility of the (meth) acrylic polymer (s) PI in the (meth) acrylic monomer (s) Ml.
- the or each (meth) acrylic polymer PI is chosen from a copolymer of methyl methacrylate and methyl acrylate and a copolymer of methyl methacrylate and ethyl acrylate.
- the (meth) acrylic monomer Ml is methyl methacrylate.
- the liquid (meth) acrylic syrup comprises a PI (meth) acrylic polymer, and not a mixture of PI (meth) acrylic polymers.
- the liquid (meth) acrylic syrup comprises a (meth) acrylic monomer Ml, and not a mixture of (meth) acrylic monomers Ml.
- liquid (meth) acrylic syrup of the (meth) acrylic composition according to the invention comprises:
- the liquid (meth) acrylic syrup according to the invention has a dynamic viscosity, at 25 ° C., comprised between lOmPa.s and lOOOOmPa.s.
- the liquid (meth) acrylic syrup is not too reactive and has a period of use after mixing (in English "pot life") of at least 5 min, preferably at least 10 min, for its subsequent processing, in particular for its transfer with a view to processing by injection molding.
- the liquid (meth) acrylic syrup according to the invention has a dynamic viscosity, at 25 ° C, between 20mPa.s and 7000mPa.s and, preferably, between 20mPa.s and 5000mPa .s.
- the liquid (meth) acrylic syrup can, in addition, comprise oligomers with (meth) acrylate functionality and / or stabilizers.
- the oligomers with (meth) acrylate functionality can in particular be epoxy- (meth) acrylates, urethane- (meth) acrylates or polyester- (meth) acrylates.
- oligomers may be present, in the liquid (meth) acrylic syrup, up to at most 5 parts by weight, advantageously at most 3 parts by weight and, preferably, at most 1 part by weight , per 100 parts by weight of the (meth) acrylic polymer (s) PI and of the (meth) acrylic monomer (s) PI.
- Stabilizers may also be present in the liquid (meth) acrylic syrup to prevent spontaneous polymerization of the (meth) acrylic monomer (s) M1.
- These stabilizers can in particular be chosen from hydroquinone (HQ), monomethyl ether hydroquinone (MEHQ), 2,6-di-tert-butyl-4-methylphenol (BHT), 2,6-di - tert-butyl-4-methoxyphenol (Topanol O) and 2,4-dimethyl-6-tert-butylphenol (Topanol A).
- HQ hydroquinone
- MEHQ monomethyl ether hydroquinone
- BHT 2,6-di-tert-butyl-4-methylphenol
- Topicanol O 2,6-di - tert-butyl-4-methoxyphenol
- Topicanol A 2,4-dimethyl-6-tert-butylphenol
- These stabilizers may be present, in the liquid (meth) acrylic syrup, up to at most 5 parts by weight, advantageously at most 4 parts by weight and, preferably, in a proportion of between 0.3 and 3 parts by weight, for 100 parts by weight of the (meth) acrylic polymer (s) PI and of the (meth) acrylic monomer (s) Ml.
- the (meth) acrylic composition according to the invention further comprises an inorganic filler C.
- the inorganic filler C may in particular comprise a filler Cl chosen from quartz, granite, marble, feldspar, clay, glass, ceramics, mica, graphite, silicates, carbonates, carbides, sulfates, silicates, hydroxides, metal oxides, metals and their mixtures.
- a filler Cl chosen from quartz, granite, marble, feldspar, clay, glass, ceramics, mica, graphite, silicates, carbonates, carbides, sulfates, silicates, hydroxides, metal oxides, metals and their mixtures.
- the filler Cl is in the form of powder.
- Such a powder may, for example, be formed of particles of which at least 50% by number have an average particle size, denoted D 5 o, less than or equal to 50 pm, advantageously less than or equal to 20 pm and, preferably, less than or equal to 5pm.
- this or these sulphates can be chosen from alkali and alkaline earth sulphates, preferably magnesium sulphate, calcium sulphate, strontium sulphate and barium sulphate.
- this or these metal oxides can be chosen from alumina DI2O3, which can be hydrated or not, barium oxide BaO, silica Si0 2 , oxide magnesium MgO and calcium oxide CaO.
- the metal oxide is silica Si0 2 .
- This silica can in particular be a ground crystalline silica or an amorphous silica.
- filler Cl is chosen from carbonates
- this or these carbonates can be chosen from calcium carbonate (chalk), magnesium carbonate, sodium carbonate and potassium carbonate.
- the filler Cl is chosen from silicates
- this or these silicates can be chosen from calcium silicate, sodium silicate, potassium silicate and magnesium silicate.
- the inorganic filler C can also comprise, in addition, aluminum trihydrate Al (OH) 3, denoted C2, and / or reinforcements, denoted C3.
- the aluminum trihydrate C2 is in the form of particles of which at least 50% by number have an average particle size, denoted D50, less than or equal to 50 ⁇ m, advantageously less than or equal at 20pm and, preferably, less than or equal to 5pm.
- the reinforcements C3 can in particular be in the form of fibers or balls. These fibers can be natural or synthetic, short or long.
- the reinforcements C3 can be chosen from glass fabrics, glass fibers and glass beads.
- the (meth) acrylic composition according to the invention comprises from 20 parts by weight to 300 parts by weight of inorganic filler C.
- the (meth) acrylic composition according to the invention comprises from 50 parts by weight to 250 parts by weight, advantageously from 100 parts by weight to 200 parts by weight, preferably from 120 parts by weight to 180 parts by weight, more preferably from 120 parts by weight to 170 parts by weight and, more preferably still, from 140 parts by weight to 170 parts by weight, of inorganic filler C.
- the (meth) acrylic composition according to the invention further comprises a (meth) acrylic monomer M2, a (meth) acrylic monomer M3 as well as a polymerization initiator.
- the (meth) acrylic monomer M2 which can copolymerize with the (meth) acrylic monomer (s) Ml, is a compound which comprises at least two (meth) acrylic functions per monomer.
- this (meth) acrylic monomer M2 can be chosen from dimethacrylates and diacrylates which are cited in paragraph [0033] of document [4],
- this (meth) acrylic monomer M2 can be chosen from the trimethacrylates and triacrylates which are cited in paragraph [0034] of document [4],
- this (meth) acrylic monomer M2 can be chosen from tetraacrylates and pentaacrylates which are cited in paragraph [0035] of document [4 ]
- the (meth) acrylic monomer M2 is chosen from ethylene glycol dimethacrylate, neopentyl glycol dimethacrylate, neopentyl glycol diacrylate, 1,4-butanediol dimethacrylate, diacrylate 1,4-butanediol, 1,3-butylene glycol dimethacrylate, 1,3-butylene glycol diacrylate, triethylene glycol dimethacrylate and triethylene glycol diacrylate.
- the (meth) acrylic composition according to the invention comprises from 0.01 part by weight to 5 parts by weight of (meth) acrylic monomer M2.
- the (meth) acrylic composition according to the invention comprises from 0.1 part by weight to 4 parts by weight, advantageously from 0.5 part by weight to 3 parts by weight, more advantageously from 0.5 part by weight to 2.7 parts by weight, even more advantageously from 0.5 part by weight to 2.5 parts by weight and even more advantageously from 0.5 part by weight to 2.2 parts by weight of (meth) acrylic monomer M2.
- the (meth) acrylic composition according to the invention also comprises a (meth) acrylic monomer M3, this monomer
- this (meth) acrylic monomer M3 is a (meth) acrylic monomer which comprises only one (meth) acrylic function per monomer.
- the (meth) acrylic monomer M3i can in particular be chosen from the methacrylates and acrylates which have been mentioned above for the (meth) acrylic monomer (s) Ml, provided that the (meth) acrylic monomer M3i is a (meth) acrylic monomer different from the (meth) acrylic monomer (s) Ml present in the liquid (meth) acrylic syrup according to the invention.
- the (meth) acrylic monomer M3i is chosen from alkyl (meth) acrylic monomers in which the alkyl group comprises at least 6 carbon atoms, this alkyl group possibly being linear, branched or cyclic, but being preferably branched or cyclic.
- the (meth) acrylic monomer M3i is chosen from cyclohexyl acrylate, cyclohexyl methacrylate, iso-bornyl acrylate, iso-bornyl methacrylate, tert-acrylate butylcyclohexyl, 4- (1,1-dimethyl) cyclohexyl acrylate and 3,3,5 trimethylcyclohexyl acrylate.
- this (meth) acrylic monomer M3 is a (meth) acrylic monomer which comprises at least two (meth) acrylic functions per monomer.
- the (meth) acrylic monomer M3 2 can in particular be chosen from the dimethacrylates and diacrylates which have been mentioned above for the (meth) acrylic monomer M2, provided that the (meth) acrylic monomer M3 2 is a (meth ) acrylic different from the (meth) acrylic monomer M2 present in the liquid (meth) acrylic syrup according to the invention.
- the (meth) acrylic monomer M3 2 is chosen from the (meth) acrylic monomers which have been mentioned for the (meth) acrylic monomer M2 and in particular those which are mentioned in paragraphs [0033] to [0035] of document [4],
- the (meth) acrylic monomer M3 2 is chosen from triethylene glycol dimethacrylate, neopentylglycol dimethacrylate, neopentylglycol diacrylate, 1,4-butanediol dimethacrylate, 1,4-butanediol diacrylate, 1,3-butylene glycol dimethacrylate, 1,3-butylene glycol diacrylate, triethylene glycol dimethacrylate and triethylene glycol diacrylate.
- the (meth) acrylic composition according to the invention comprises from 0.01 part by weight to 10 parts by weight of (meth) acrylic monomer M3.
- the (meth) acrylic composition according to the invention comprises from 0.1 part by weight to 5 parts by weight, and advantageously 0.1 part by weight to 4 parts by weight, of monomer (meth) acrylic M3.
- the (meth) acrylic composition according to the invention comprises from 0.1 part by weight to 5 parts by weight of the sum of (meth) acrylic monomer M2 and of monomer (meth) acrylic M3.
- the (meth) acrylic composition according to the invention further comprises a polymerization initiator whose function is to ensure the start of the polymerization of the (meth) acrylic monomers Ml, M2 and M3 (M3i or M3 2 > to start.
- the polymerization initiator can be chosen from organic peroxides, peroxyesters, peroxyacetals and azo compounds.
- the polymerization initiator is advantageously chosen from organic peroxides which are liquid at least in the temperature range from 0 ° C. to 50 ° C.
- the polymerization initiator has a half-life temperature at 1 hour which is greater than 60 ° C, advantageously greater than 65 ° C and, preferably, greater than 70 ° C.
- the polymerization initiator has a maximum storage temperature of at least 10 ° C, advantageously at least 15 ° C.
- the polymerization initiator may, in particular, comprise from 2 to 30 carbon atoms and be, for example, chosen from tert-amyl peroxynodeodecanoate, di (sec-butyl) peroxydicarbonate, diisopropyl peroxydicarbonate , tert-butyl peroxynodeodecanoate, di (2-ethylhexyl) peroxydicarbonate, tert-amyl peroxypivalate, tert-butyl peroxypivalate, di (3,5,5-trimethylhexanoyl) peroxide - dimethyl-2, 5-di (2-ethylhexanoylperoxy) hexane, peroxy-2-ethylhexanoate of 1,1, 3, 3 tetramethylbutyl, peroxy-2-ethylhexanoate of tert-amyl, peroxy-2-ethylhexanoate of tert-a
- the polymerization initiator is chosen from 2,5-dimethyl-2,5-di (2-ethylhexanoylperoxy) hexane, peroxy-2-ethylhexanoate of 1,3,3,3- tetramethylbutyl, tert-amyl peroxy-2-ethylhexanoate, tert-butyl peroxy-2-ethylhexanoate, tert-butyl peroxydiethylacetate, tert-butyl peroxyisobutyrate, tert-amylperoxy-1-methoxycyclohexane, 1, 1-di (tert-amylperoxy) cyclohexane, 1, 1-di (tert-butylperoxy) -3, 3, 5, 5-trimethylcyclohexane, 1, 1-di (tert-butylperoxy) cyclohexane, peroxy-2-ethylhex
- the polymerization initiator is chosen from 2,5-dimethyl-2,5-di (2-ethylhexanoylperoxy) -hexane, peroxy-2-ethylhexanoate of 1,3,3,3 - tetramethylbutyl, tert-butyl peroxy-2-ethylhexanoate, tert-butyl peroxydiethylacetate, tert-amylperoxy-1- methoxycyclohexane, 1, 1-di (tert-amylperoxy) cyclohexane, 1,1- di ( tert-butylperoxy) -3.3, 5-trimethyl-cyclohexane, 1, 1-di (tert-butylperoxy) -cyclohexane, tert-amyl peroxy-2-ethylhexylcarbonate, tert-butyl peroxy-2-ethylhexyl
- the (meth) acrylic composition according to the invention comprises from 0.01 part by weight to 5 parts by weight of polymerization initiator.
- the (meth) acrylic composition according to the invention comprises from 0.02 part by weight to 4 parts by weight, advantageously from 0.03 part by weight to 3 parts by weight, polymerization initiator for 100 parts by weight of the (meth) acrylic monomer (s) Ml.
- the (meth) acrylic composition according to the invention can effectively comprise, in addition, a polymerization activator.
- This polymerization activator can in particular be chosen from tertiary amines, such as N, N-dimethyl-p- toluidine (DMPT) and N, N-dihydroxyethyl-p-toluidine (DHEPT), and transition metal catalysts which are soluble in organic solutions.
- DMPT N-dimethyl-p- toluidine
- DHEPT N-dihydroxyethyl-p-toluidine
- composition According to a particular embodiment, the composition
- (meth) acrylic according to the invention comprises from 0.01 part by weight to 1 part by weight, advantageously from 0.02 part by weight to 0.7 part by weight and, preferably, from 0.03 part by weight to 0.4 parts by weight ppm, of polymerization activator per 100 parts by weight of the (meth) acrylic monomer (s) Ml.
- the (meth) acrylic composition according to the invention may, in addition, comprise a coupling agent which promotes the dispersion of the inorganic filler C in the liquid (meth) acrylic syrup formed by the (meth) acrylic polymers PI and the (meth) acrylic monomer (s) Ml.
- This coupling agent can be formed by the inorganic filler C and / or by a compound as such.
- the coupling agent can be formed by only one of the compounds which have just been mentioned or by a mixture of two or more of these compounds.
- this inorganic filler C is then functionalized.
- silanized silica such as that sold by the company Quarzwerke under the name Silbond®W 12 MST.
- this coupling agent can be a compound comprising functional groups such as an organosilane.
- This coupling agent can in particular be chosen from aminosilanes, vinylsilanes, methacrylsilanes and mixtures thereof.
- the coupling agent is chosen from methacrylsilanes.
- the (meth) acrylic composition according to the invention can also comprise, in addition, one or more additives such as, for example, a chain limiting agent, a chain transfer agent (for example, dimethyldioxirane), an agent for adjusting the polymerization rate of the (meth) acrylic monomer (s) M1, a flame retardant, a dye and a pigment.
- additives such as, for example, a chain limiting agent, a chain transfer agent (for example, dimethyldioxirane), an agent for adjusting the polymerization rate of the (meth) acrylic monomer (s) M1, a flame retardant, a dye and a pigment.
- the present invention relates, secondly, to a composite material.
- this composite material is obtained by polymerization of a (meth) acrylic composition as defined above, that is to say of a composition comprising:
- the characteristics described above in conjunction with the (meth) acrylic composition in particular those relating to (x) (meth) acrylic polymers PI and (x) (meth) acrylic monomers Ml forming the (meth) acrylic syrup , the (meth) acrylic monomers M2 and M3, the inorganic filler C, the polymerization initiator and, where appropriate, the polymerization activator, the coupling agent and / or the additives, can be taken alone or in combination.
- the composite material according to the invention is characterized by particularly efficient mechanical properties.
- the present invention relates, thirdly, to a coated composite material, this coated composite material comprising a composite material and at least one protective layer disposed on said composite material.
- the material is as defined above, that is to say that it is obtained by polymerization of a (meth) acrylic composition in accordance with what has just been described, in particular as regards the characteristics relating to the (meth) acrylic composition, the advantageous characteristics of this (meth) acrylic composition being able to be taken alone or in combination.
- the coated composite material according to the invention is characterized not only by the remarkable mechanical properties which are given to it by the composite material according to the invention but also by the complementary properties which are given to it by the protective layer disposed on the composite material.
- a protective layer can in particular make it possible to confer and / or reinforce thermal insulation, electrical insulation, protection against UV rays, flame retardant properties, barrier properties to gases and / or water.
- the protective layer is obtained from a composition which has good compatibility with the (meth) acrylic composition from which the composite material is obtained.
- This protective layer can in particular be obtained from a composition comprising a fluorocarbon polymer, such as polyvinylidene fluoride (PVDF) or also a (meth) acrylic polymer, preferably a (meth) acrylic polymer.
- a fluorocarbon polymer such as polyvinylidene fluoride (PVDF) or also a (meth) acrylic polymer, preferably a (meth) acrylic polymer.
- composition of the protective layer can also comprise an inorganic filler or, on the contrary and preferably, be free of it.
- the present invention relates, fourthly, to a process for manufacturing a composite material from a (meth) acrylic composition.
- this method comprises: (1) mixing the compounds of a (meth) acrylic composition as defined above, the liquid (meth) acrylic syrup being prepared first and the polymerization initiator being introduced last into the (meth) acrylic syrup liquid, and
- the method according to the invention comprises:
- liquid (meth) acrylic syrup being prepared first and the polymerization initiator being introduced last into the liquid (meth) acrylic syrup, and (2) the hot molding of the composition obtained at the end of step (1).
- the manufacturing method according to the invention is therefore a method whose implementation is particularly simple and which can be easily implemented in current installations dedicated to the manufacture of thermoplastic materials.
- Step (1) of preparation of the manufacturing process according to the invention is carried out by mixing all the compounds entering into the (meth) acrylic composition, taking care to prepare, first, the liquid (meth) acrylic syrup and then introduce, into this (meth) acrylic syrup, the (meth) acrylic monomers M2 and M3 and, if appropriate, the polymerization activator, the coupling agent and / or the additives , as well as the inorganic filler C, the polymerization initiator being introduced last.
- This mixing can be manual or else carried out by means of a mixer.
- the mixing is carried out under a slight vacuum so as to eliminate the reaction gases, typically between 80mbar and lbar advantageously between 100mbar and lbar, more advantageously between 500mbar and 900mbar, for a period of time included between 5 min and 6 h, advantageously between 5 min and 2 h, more advantageously between 15 min and 1 h and, preferably, between 30 min and 1 h.
- the reaction gases typically between 80mbar and lbar advantageously between 100mbar and lbar, more advantageously between 500mbar and 900mbar, for a period of time included between 5 min and 6 h, advantageously between 5 min and 2 h, more advantageously between 15 min and 1 h and, preferably, between 30 min and 1 h.
- a step of sweeping the mixture with an inert gas for example nitrogen, is carried out.
- the functionalization is carried out prior to its introduction into the (meth) acrylic composition.
- Step (2) of hot molding of the composition as obtained at the end of step (1) makes it possible to carry out the polymerization of the thermoplastic matrix and, in doing so, to obtain the material composite according to the invention.
- This step (2) of hot molding can be carried out by any molding technique conventionally used in the field of thermoplastics.
- this step (2) of hot molding can be implemented at a temperature less than or equal to 80 ° C.
- Step (2) of hot molding can in particular be carried out by injection molding, by shell molding (or gravity casting), by vacuum molding (or vacuum casting) or by low pressure molding (or casting low pressure) .
- the injection molding is carried out by means of the gelling process under automatic pressure or GPA (in English, Automatic Pressure Gelling or APG for short).
- GPA automatic Pressure Gelling
- the polymerization initiator is in a liquid form in the temperature range from 0 ° C. to, for example, 50 ° C and can be more particularly chosen from the organic peroxides mentioned above for the (meth) acrylic composition, in its advantageous and preferential variants.
- the invention relates, fifthly, to the uses of the (meth) acrylic composition, of the composite material and of the coated composite material as defined above, the advantageous characteristics of these (meth) acrylic composition and materials composites can be taken alone or in combination.
- the (meth) acrylic composition according to the invention can be used for the manufacture of composite parts with a thermoplastic matrix.
- the (meth) acrylic composition and the composite materials according to the invention can be used in many sectors and, in particular, in the housing, automobile, rail, sports, and sports sectors. aeronautics, aerospace, photovoltaic, wind, marine and medical applications.
- these materials can be used to make equipment for bathroom and / or kitchen, such as worktops, sinks, sinks, shower trays, bathtubs, or facade panels.
- the compounds used for the preparation of the various (meth) acrylic compositions are the following:
- PI (meth) acrylic polymer a PMMA formed by a copolymer of methyl methacrylate and ethyl acrylate sold by the company Altuglas under the name Altuglas® BS 520,
- (meth) acrylic monomer Ml a methyl methacrylate stabilized by hydroquinone of monomethyl ether
- inorganic filler C a silica
- EGDMA ethylene glycol dimethacrylate
- BDDMA 1,4-butanediol dimethacrylate
- IBA isobornyl acrylate
- TEGDMA triethylene glycol dimethacrylate
- BYK-C 8000 sold by the company BYK, or. Geniosil®GF 31 sold by the Wacker Company, and
- a vanadium dibutylphosphate comprising 5% by mass of vanadium in propylene glycol sold by the company OMG borchers under the name
- the liquid (meth) acrylic syrup which will be used for the preparation of the various (meth) acrylic compositions, is prepared by dissolving 20 parts by weight of the (meth) acrylic polymer Pi in 80 parts by weight of the monomer ( meth) acrylic Ml.
- Table 1 The compounds forming the methacrylic compositions 1 to 3 according to the invention and the comparative composition 4 are mixed for a period ranging between 10 min and 5 h.
- compositions 1 to 4 After degassing under a vacuum of 900 mbar for 60 min, each of compositions 1 to 4 is swept with nitrogen and then injected into a mold having a footprint compatible with the obtaining of type IB test pieces in accordance with the standard ISO 527-1: 2012.
- each of the compositions 1 to 4 is obtained by bringing the mold to a temperature of 80 ° C for 15 min.
- Table 2 The results appearing in Table 2 show the poor mechanical properties, at 23 ° C, of the test pieces obtained from the comparative composition 4.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polymerisation Methods In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1855887A FR3083241B1 (fr) | 2018-06-28 | 2018-06-28 | Composition (meth)acrylique, materiau composite obtenu a partir d'une telle composition, son procede de fabrication et ses utilisations |
| PCT/FR2019/051585 WO2020002842A1 (fr) | 2018-06-28 | 2019-06-27 | Composition (meth) acrylique, materiau composite obtenu a partir d'une telle composition, son procede de fabrication et ses utilisations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3814417A1 true EP3814417A1 (fr) | 2021-05-05 |
Family
ID=63834165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19748864.6A Pending EP3814417A1 (fr) | 2018-06-28 | 2019-06-27 | Composition (meth) acrylique, materiau composite obtenu a partir d'une telle composition, son procede de fabrication et ses utilisations |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11952485B2 (fr) |
| EP (1) | EP3814417A1 (fr) |
| CN (1) | CN112585205A (fr) |
| FR (1) | FR3083241B1 (fr) |
| WO (1) | WO2020002842A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4223809B1 (fr) * | 2022-02-08 | 2026-05-06 | Schneider Electric Industries SAS | Utilisation d'une composition (méth)acrylique pour la fabrication d'un matériau diélectrique et procédé de fabrication associé |
| FR3132523B1 (fr) | 2022-02-08 | 2026-01-09 | Arkema France | Composition (meth)acrylique, materiau composite polymérique obtenu a partir d’une telle composition, procede pour la production de ladite composition et dudit matériau et utilisations de ceux-ci |
| FR3157392A1 (fr) * | 2023-12-22 | 2025-06-27 | Arkema France | Composition (meth)acrylique comprenant deux monomères, procede de preparation de ladite composition et utilisations de celle-ci |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0991724B1 (fr) * | 1997-06-19 | 2003-03-19 | Atofina | Composition de plastique |
| JP2005082612A (ja) * | 2003-09-04 | 2005-03-31 | Japan U-Pica Co Ltd | アクリル系樹脂成形材料 |
| US7622514B2 (en) | 2005-05-09 | 2009-11-24 | Sabic Innovative Plastics Ip B.V. | Curable composition and article possessing protective layer obtained therefrom |
| ITAN20120097A1 (it) * | 2011-08-04 | 2013-02-05 | Delta Srl | Materiale composito autopulente, in particolare un composito utilizzato per la produzione di articoli stampati per l'arredo cucina e bagno. |
| FR2981652B1 (fr) | 2011-10-21 | 2015-03-27 | Arkema France | Composites via la polymerisation in-situ de resines thermoplastiques methacryliques |
| FR2993581B1 (fr) | 2012-07-18 | 2016-01-22 | Arkema France | Procede d'impregnation pour un substrat fibreux, sirop (meth)acrylique liquide pour le procede d'impregnation, son procede de polymerisation et produit structure obtenu a partir de celui-ci |
| FR3002941B1 (fr) | 2013-03-08 | 2015-04-10 | Arkema France | Sirop (meth)acrylique liquide d'impregnation d'un substrat fibreux, procede d'impregnation d'un substrat fibreux, materiau composite obtenu apres polymerisation dudit substrat pre-impregne |
| FR3002942B1 (fr) * | 2013-03-11 | 2016-01-22 | Arkema France | Sirop (meth)acrylique liquide d'impregnation d'un substrat fibreux, procede d'impregnation d'un substrat fibreux, materiau composite obtenu apres polymerisation dudit substrat pre-impregne. |
| FR3005057B1 (fr) | 2013-04-25 | 2015-05-15 | Arkema France | Sirop liquide (meth)acrylique, son procede de polymerisation, son utilisation et objet moule obtenu a partir de celui-ci |
| ITUB20150293A1 (it) * | 2015-05-06 | 2016-11-06 | Delta Srl | Materiale composito autopulente per la produzione di articoli stampati per l'arredo cucina e bagno. |
| US10804904B1 (en) | 2019-10-10 | 2020-10-13 | Samsung Electronics Co., Ltd. | Apparatus and method for detecting synchronization loss in multi-lane transmitter |
-
2018
- 2018-06-28 FR FR1855887A patent/FR3083241B1/fr active Active
-
2019
- 2019-06-27 EP EP19748864.6A patent/EP3814417A1/fr active Pending
- 2019-06-27 US US17/254,957 patent/US11952485B2/en active Active
- 2019-06-27 WO PCT/FR2019/051585 patent/WO2020002842A1/fr not_active Ceased
- 2019-06-27 CN CN201980055968.5A patent/CN112585205A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20210122910A1 (en) | 2021-04-29 |
| WO2020002842A1 (fr) | 2020-01-02 |
| CN112585205A (zh) | 2021-03-30 |
| US11952485B2 (en) | 2024-04-09 |
| FR3083241B1 (fr) | 2021-12-17 |
| FR3083241A1 (fr) | 2020-01-03 |
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