EP1259665A2 - Carbonisation de materiaux fibreux cellulosiques en presence d'un compose organosilicie - Google Patents
Carbonisation de materiaux fibreux cellulosiques en presence d'un compose organosilicieInfo
- Publication number
- EP1259665A2 EP1259665A2 EP00985407A EP00985407A EP1259665A2 EP 1259665 A2 EP1259665 A2 EP 1259665A2 EP 00985407 A EP00985407 A EP 00985407A EP 00985407 A EP00985407 A EP 00985407A EP 1259665 A2 EP1259665 A2 EP 1259665A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- units
- carbonization
- organosilicon compound
- materials
- oligomers
- 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.)
- Granted
Links
- 238000003763 carbonization Methods 0.000 title claims abstract description 49
- 150000003961 organosilicon compounds Chemical class 0.000 title claims abstract description 46
- 239000002657 fibrous material Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 28
- 229920005989 resin Polymers 0.000 claims abstract description 24
- 239000011347 resin Substances 0.000 claims abstract description 24
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 5
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 3
- 239000000654 additive Substances 0.000 claims description 21
- 230000000996 additive effect Effects 0.000 claims description 16
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 13
- 238000005470 impregnation Methods 0.000 claims description 11
- 229910004283 SiO 4 Inorganic materials 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 10
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 10
- 239000011707 mineral Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 8
- -1 alkyl silicate Chemical compound 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 229920002545 silicone oil Polymers 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 3
- 239000012298 atmosphere Substances 0.000 claims description 3
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 3
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 2
- 239000005696 Diammonium phosphate Substances 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- 239000002879 Lewis base Substances 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 235000019270 ammonium chloride Nutrition 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 2
- 229910000388 diammonium phosphate Inorganic materials 0.000 claims description 2
- 235000019838 diammonium phosphate Nutrition 0.000 claims description 2
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 2
- 150000004820 halides Chemical class 0.000 claims description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 2
- 150000007527 lewis bases Chemical class 0.000 claims description 2
- 239000004745 nonwoven fabric Substances 0.000 claims description 2
- 235000021317 phosphate Nutrition 0.000 claims description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 2
- 239000004753 textile Substances 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 229910052909 inorganic silicate Inorganic materials 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 16
- 229910052799 carbon Inorganic materials 0.000 description 15
- 229920002678 cellulose Polymers 0.000 description 13
- 235000010980 cellulose Nutrition 0.000 description 13
- 239000001913 cellulose Substances 0.000 description 12
- 239000000835 fiber Substances 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 229920000049 Carbon (fiber) Polymers 0.000 description 10
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 9
- 239000004917 carbon fiber Substances 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 229950011008 tetrachloroethylene Drugs 0.000 description 9
- 229920000297 Rayon Polymers 0.000 description 8
- 239000000758 substrate Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- 239000002243 precursor Substances 0.000 description 6
- 239000002964 rayon Substances 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 238000000197 pyrolysis Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 229910003849 O-Si Inorganic materials 0.000 description 2
- 229910003872 O—Si Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OVSKIKFHRZPJSS-UHFFFAOYSA-N 2,4-D Chemical compound OC(=O)COC1=CC=C(Cl)C=C1Cl OVSKIKFHRZPJSS-UHFFFAOYSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical class [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000005899 aromatization reaction Methods 0.000 description 1
- 235000015241 bacon Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920001709 polysilazane Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000009656 pre-carbonization Methods 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
- D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
- D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
- D01F9/16—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from products of vegetable origin or derivatives thereof, e.g. from cellulose acetate
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/10—Chemical after-treatment of artificial filaments or the like during manufacture of carbon
- D01F11/14—Chemical after-treatment of artificial filaments or the like during manufacture of carbon with organic compounds, e.g. macromolecular compounds
Definitions
- the present invention relates to a process for carbonizing cellulosic fibrous materials, in the presence of at least one organosilicon compound; this, to obtain fibrous carbon materials. Said carbonization can be carried out both continuously and discontinuously.
- the carbon fibrous materials obtained can in turn be heat treated (especially graphitized) to generate fibers having the desired properties.
- Carbon fibers with a cellulose precursor were the first carbon fibers manufactured in the world. From such cellulosic precursors, EDISON, at the end of the last century, obtained filaments for its incandescent lamps (US-A-223,898).
- Polyacrylonitrile has however proved for a long time a more suitable precursor for obtaining high-strength and high-modulus carbon fibers, more particularly intended for reinforcements of composite materials.
- ex-viscose carbon fibers have been used since 1955 in the manufacture of carbon / phenolic resin composites, used as thermal protection for propellants. These fibers, low modulus, have a limited thermal conductivity.
- the manufacture of these fibers requires a special rayon type precursor: a rayon with a disoriented crystalline texture (R. BACON, Carbon Fibers from Rayon Precursors, in Chemistry and Physics of Carbon, 1973, Vol. 2, Marcel Dekker, New-York and P. OLRY, 14 lh Biennial Conference on Carbon, 1979).
- R. BACON Carbon Fibers from Rayon Precursors, in Chemistry and Physics of Carbon, 1973, Vol. 2, Marcel Dekker, New-York and P. OLRY, 14 lh Biennial Conference on Carbon, 1979.
- the originality of the present invention lies in the selection of specific organosilicon compounds - carbonization additives for cellulosic fibrous materials - which are particularly effective.
- Said compounds have been found to be very effective in improving the properties of the carbon fibers obtained after carbonization, this with any type of charred cellulosic materials (rayon, fibrans, in particular commercial); and, whether said carbonization is carried out continuously or discontinuously.
- the intervention of said compounds constitutes an undeniable advantage for the implementation of batch and continuous carbonizations, it proves to be essential for the continuous carbonization of certain substrates (it makes said continuous carbonization of said substrates possible. substrates).
- the present invention therefore relates to the use of a particular family of organosilicon compounds in said context.
- the present invention in fact relates to a process for obtaining fibrous carbon materials by carbonization implemented continuously or batchwise, in the presence of at least one organosilicon compound, of cellulosic fibrous materials.
- said organosilicon compound is chosen from the family of oligomers and resins, crosslinked, cyclic or branched, which have a number average molecular mass of between 500 and 10,000 and which consist of units of formula SiO 4 (said units Q 4 ) and of units of formula Si O x R > (OR '), in which:
- R represents hydrogen or an alkyl radical, linear or branched, comprising from 1 to 10 carbon atoms, different R being capable of occurring in the same unit, when y>2;
- R ' represents, independently of R, hydrogen or an alkyl radical, linear or branched, comprising from 1 to 10 carbon atoms, different R' being capable of occurring in the same unit, when z>2; it being understood that: • for the oligomers which have a number average molecular mass of less than 1000, we have az ⁇ 0, in said formula SiO x R y (OR '); and
- This reinforcement with the additives of the invention, is of remarkable intensity. It can counter shrinkage during carbonization and even stretch the fibers (up to 50%) without breaking them, which ensures an orientation of the texture of said fibers and a reduction or rearrangement of the internal pores. It made it possible to obtain, with any type of cellulose (celluloses with solvent, spokes for tires in particular), filaments which have resistances of the order of 1,500 to 2,000 MPa and modules of the order of 70 to 1 10 GPa.
- the family of organosilicon compounds selected in the context of the present invention is that of oligomers and silicone resins, as defined above.
- Said family in fact comprises two sub-families, on the one hand, that of the oligomers of partially hydrolyzed organic silicates, volatile at temperatures of use and on the other hand, that of resins, solid products at ambient temperature, deposited by impregnation, advantageously in solution in a solvent.
- Said oligomers and resins have a number average molecular weight of between 500 and 10,000, advantageously between 2,500 and 5,000. Generally, for oligomers, a number average molecular weight of between 500 and 2,000, more generally between 500 and 1000 and for resins, a number average molecular weight between 1,000 and 10,000, more generally between 2,000 and 10,000.
- the units of formula SiO 4 are said to be units Q 4 .
- the alkyl radicals R and / or R '(in the formula SiO 4 (OR'),) are advantageously lower alkyl radicals in C, -C 4 , very advantageously methyl or ethyl radicals, particularly preferred for methyl radicals.
- the organosilicon compound involved is a resin known as MQ resin, consisting of units of formula SiO 4 (units Q), units of formula SiO, -OH (units Q,) and units of formula O-Si-R, (units M).
- MQ resin consisting of units of formula SiO 4 (units Q), units of formula SiO, -OH (units Q,) and units of formula O-Si-R, (units M).
- said resin MQ has n, patterns Q 4 , n, patterns Q, and n, patterns M, with advantageously: 2 ⁇ n, ⁇ 70
- the organosilicon compound intervening is chosen from the oligomers of a partially hydrolyzed organic silicate, advantageously chosen from the oligomers of a partially hydrolyzed alkyl silicate, and preferably chosen from the oligomers of partially hydrolyzed ethyl silicate.
- a partially hydrolyzed ethyl silicate oligomer in particular that of an oligomer of this type, produced on a large scale by the silicone industry, is particularly recommended.
- TEOS 40 and in particular marketed by the company BAYER under the reference TES 40.
- TEOS 28 tetraethylorthosilicate
- the commercial product is in fact a mixture of ethyl silicate (1 tetrahedron SiO 4 , 1 silicon atom per molecule) and oligomers of said silicate which contain up to 9 tetrahedra of SiO 4 , including those of the ends of molecules which have SiO, -OH units (Q, units). Said product gradually distills from room temperature to 500 ° C.
- TEOS 40 and / or similar compounds are an integral part of the present invention. Having specified above the nature of the organosilicon compounds selected according to the invention, it is now proposed to describe, in no way limiting, their mode of intervention. In fact, two modes of intervention are recommended, depending on the nature of said compound.
- non-volatile compound ie which remains largely solid and / or liquid, at temperatures close to 400 ° C
- the cellulosic fibrous materials being previously impregnated therewith; said impregnation being made possible or even optimized generally thanks to the intervention of at least one, generally one, solvent and / or at least one, generally one, film-forming agent, etc.
- the fibrous materials cellulosics, such organosilicon compounds (of such an organosilicon compound or of at least two such organosilicon compounds), non-volatile, said compounds are therefore generally used in solution in a solvent; solvent, such as perchlorethylene, which is easily removed before carbonization.
- a film-forming agent is advantageously chosen from silicone oils, of suitable viscosity (said viscosity generally being between 500 and 10,000 mPa.s, advantageously between 500 and 5,000 mPa.s).
- Such oils can in particular correspond to one or the other of the formulas below (-Si (CH,), - O) argueor tSi (CH 3 ) O-Si (C 5 H 6 ) ⁇ -O) 11 .
- Such oils depolymerize around 400 ° C and a priori play no role in the chemical reinforcement of the surface of the fibers. However, they avoid the bridging of the filaments by the cellulose pyrolysis products (tars), bridging which could lead to embrittlement of the threads.
- organosilicon compound (s) involved is (are) volatile (s) (ie that it (s) distills (s), quantitatively, well below 400 ° C), it is not possible to impregnate the substrate to be carbonized.
- the cellulosic fibrous materials are charred in the presence of its (their) vapor.
- the carbonization is in fact implemented, at least in part, advantageously at least in its first phases, in the presence of such (such) volatile organosilicon compound (s).
- the said compound (s) generally intervene in an inert gas. It can also be indicated here, in general, that the organosilicon compounds, selected according to the invention, intervene, of course, in an effective amount, generally at a rate of 1 to 10% by weight, relative to the weight of cellulosic materials. It is advisable to put enough to observe the expected effect but not too much because then one can observe an undesirable bonding effect. Those skilled in the art are able to optimize the amount of intervention of the organosilicon compounds, the use of which is recommended in the context of the process of the invention.
- the beneficial effect of said organosilicon compounds could be further enhanced by the joint intervention of a mineral additive.
- the cellulosic fibrous materials are thus also impregnated, before their carbonization, with at least one mineral additive, acid or Lewis base.
- Said mineral additive can in particular be chosen from halides, sulphates and phosphates of ammonium, sodium, urea and their mixtures. It advantageously consists of ammonium chloride (NH 4 C1) or diammonium phosphate [(NH 4 ) 2 HPO.
- carbonization is initiated in an atmosphere which contains hydrogen chloride (HC1 gas).
- Said atmosphere generally contains said hydrogen chloride, diluted in air or nitrogen.
- HC1 gas hydrogen chloride
- Said first step is generally carried out between 100 and 250 ° C. She can in fact be more precisely qualified as a relaxation stage - dehydration, preliminary to carbonization proper.
- the additives of the invention are advantageously used, both in carbonization processes used batchwise and in carbonization processes used continuously. We have seen that they made possible the implementation of certain carbonizations continuously (carbonizations that it was only possible to implement, according to the prior art, discontinuously).
- the method of the invention is thus implemented continuously.
- the process of the invention - carbonization of cellulosic fibrous materials in the presence of specific organosilicon compounds - is particularly advantageous in that it makes it possible to carbonize, effectively, batchwise and continuously, any type of cellulose, conditioned under different forms.
- the cellulosic fibrous material may in particular be in the form of threads or textile surfaces (fabrics, knits, felts, nonwovens, unidirectional sheets, unidirectional ribbons, etc.).
- Said cellulosic fibrous material may in particular consist of any type of rayon and fibranne.
- the process of the invention is, in this respect, particularly interesting: it leads, implemented with products, available on the market, of wide distribution, to fibrous carbon materials, of high quality. According to the prior art, such high quality materials could only be obtained from cellulosic fibrous materials of very specific types.
- the impregnation is carried out by dipping the wire in a 3.5% by weight solution of the said mixture in perchlorethylene. After elimination of the perchlorethylene, the wire is pyrolysed, in free shrinkage (0.0049 N; 0.5 gf), according to the thermal profile below:
- This pyrolysis carried out discontinuously in the context of the example, may well be carried out continuously.
- the carbon filaments extracted from the wire have a resistance of 1,125 MPa and a module of 40 GPa for a diameter of 5.8 ⁇ m.
- the shrinkage during carbonization is 40%.
- the carbonization yield is 16%.
- the impregnation is carried out by passing the wire through a 2.5% by weight solution of the solution of the MQ resin mixture and non-reactive siloxane oil in perchlorethylene. After elimination of the perchlorethylene, the wire is pyrolysed under a tension of 0.53 N (54 gf) according to the thermal profile specified in Example 1.
- the carbon filaments extracted from the wire have a resistance of 1,800 MPa and a module of 66 GPa, for a diameter of 4.4 ⁇ m.
- the elongation during carbonization is 7.1%.
- the carbonization yield is 16.1%.
- a mesophase cellulose yarn (tensile strength 100 cN / tex), manufactured according to the teaching of patent application EP-A-0 179 822
- the carbon filaments extracted from the wire have a resistance of 1,800 MPa and a modulus of 100 GPa.
- the diameter is 3.8 ⁇ m and the elongation, during charring, is 52%.
- the carbonization yield is 17.3%.
- the tetraethylorthosilicate used is that sold by the company Bayer under the reference TES 40.
- the carbon filaments extracted from the wire have a resistance of 930 MPa and a module of 38 GPa, for a diameter of 5.5 ⁇ m.
- the carbonization shrinkage, along the fiber axis, is 38%.
- the carbonization yield is 14.5%.
- a cellulose yarn identical to that of Example 1 is desensed and then impregnated with the organosilicon additive as in Example 1. It is then also impregnated with 8% by weight of NH 4 Cl by passage through an aqueous solution with 13% by weight of said NH 4 C1.
- the wire is dried at 100 ° C for 30 min and the excess NH 4 Cl is eliminated by rinsing for a few seconds with distilled water. Said wire is dried at 100 ° C for 1 hour then undergoes pyrolysis until
- the tensile strength of the carbon filaments extracted from said carbonized wire is 1,200 MPa and their modulus of 45 GPa, for a diameter of 8.3 ⁇ m.
- the shrinkage during carbonization is 32.3%.
- the carbonization yield is 30%.
- a cellulose yarn identical to that of Example 1 is desensed and then impregnated with the organosilicate additive as in Example 1. It is then pyrolysed according to the thermal profile of Example 1, but replacing the step at 170 ° - 90 min in air in a step at 170 ° - 90 min in HC1 / N 2 mixture (1: 1).
- the breaking strength of the carbon filaments extracted from said carbonized wire is 1350 MPa, their modulus of 50 MPa, their diameter of 8.6 ⁇ m.
- the shrinkage during carbonization is 31.5%.
- Example 7 (comparative example):
- a cellulose yarn identical to that of Example 1 is desensitized with perchlorethylene and then, without impregnation with the polysiloxane additive, it is pyrolysed according to the thermal profile indicated in said Example 1.
- the breaking strength of the carbon filaments extracted from the wires obtained is only 660 MPa, their modulus is 38 GPa.
- the diameter of said filaments is 5.8 ⁇ m.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Inorganic Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Silicon Polymers (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Woven Fabrics (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9915329 | 1999-12-06 | ||
FR9915329A FR2801907B1 (fr) | 1999-12-06 | 1999-12-06 | Carbonisation de materiaux fibreux cellulosiques en presence d'un compose organosilicie |
PCT/FR2000/003389 WO2001042544A2 (fr) | 1999-12-06 | 2000-12-05 | Carbonisation de materiaux fibreux cellulosiques en presence d'un compose organosilicie |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1259665A2 true EP1259665A2 (fr) | 2002-11-27 |
EP1259665B1 EP1259665B1 (fr) | 2004-04-28 |
Family
ID=9552914
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00985407A Expired - Lifetime EP1259665B1 (fr) | 1999-12-06 | 2000-12-05 | Carbonisation de materiaux fibreux cellulosiques en presence d'un compose organosilicie |
Country Status (12)
Country | Link |
---|---|
US (1) | US7226639B2 (fr) |
EP (1) | EP1259665B1 (fr) |
JP (1) | JP4651256B2 (fr) |
AT (1) | ATE265560T1 (fr) |
AU (1) | AU2183401A (fr) |
BR (1) | BR0016124B1 (fr) |
DE (1) | DE60010343T2 (fr) |
FR (1) | FR2801907B1 (fr) |
MX (1) | MXPA02005624A (fr) |
RU (1) | RU2256013C2 (fr) |
UA (1) | UA72780C2 (fr) |
WO (1) | WO2001042544A2 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2801906B1 (fr) * | 1999-12-06 | 2002-03-01 | Snecma | Carbonisation de materiaux fibreux cellulosiques en presence d'un compose organosilicie |
ATE361383T1 (de) * | 2004-12-07 | 2007-05-15 | Snecma Propulsion Solide | Verfahren zur herstellung von garnen oder faserblättern aus kohlenstoff ausgehend von einem cellulosematerial |
JP4936478B2 (ja) * | 2009-01-14 | 2012-05-23 | 前田 俊克 | 炭素化布帛の製造方法及び炭素化布帛 |
JP5271887B2 (ja) * | 2009-05-08 | 2013-08-21 | 国防科学研究所 | ライオセル系炭素繊維及び炭素織物の製造方法 |
RU2459893C1 (ru) * | 2011-03-18 | 2012-08-27 | Общество с ограниченной ответственностью Научно-производственный центр "УВИКОМ" (ООО НПЦ "УВИКОМ") | Способ получения углеродного волокнистого материала |
RU2490378C1 (ru) * | 2012-03-23 | 2013-08-20 | Общество с ограниченной ответственностью Научно-производственный центр "УВИКОМ" (ООО НПЦ "УВИКОМ") | Способ получения углеродного волокнистого материала |
KR101285702B1 (ko) * | 2012-09-03 | 2013-07-12 | 국방과학연구소 | 섬유강화 복합재료 |
CA2987025C (fr) | 2015-06-11 | 2023-06-13 | Stora Enso Oyj | Fibre et son processus de fabrication |
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US3174895A (en) * | 1960-09-07 | 1965-03-23 | Union Carbide Corp | Graphite cloth laminates |
US3628985A (en) * | 1965-10-23 | 1971-12-21 | Owens Illinois Inc | Organopolysiloxane impregnated fibrous sheet and method of producing same |
GB1130304A (en) * | 1966-01-12 | 1968-10-16 | V Nii Elektrotekhniki | Process for manufacture of flexible graphite material from rayon cord |
GB1222881A (en) * | 1967-01-06 | 1971-02-17 | Nippon Carbon Company Ltd | Process for the preparation of carbon fibers |
GB1301101A (en) * | 1969-01-08 | 1972-12-29 | Secr Defence | Improvements in the manufacture of carbon |
JPS5540687B2 (fr) * | 1971-10-04 | 1980-10-20 | ||
DE2320825C2 (de) * | 1973-04-25 | 1983-11-17 | Deutsches Wollforschungsinstitut an der Rheinisch-Westfälischen Technischen Hochschule Aachen, 5100 Aachen | Verfahren zum Carbonisieren von Cellulosematerialien |
FR2421982A1 (fr) * | 1978-04-03 | 1979-11-02 | Saint Gobain | Composition d'ensimage et fibres de verre traitees a l'aide de cette composition |
JPS5950188B2 (ja) * | 1979-07-18 | 1984-12-06 | 麒麟麦酒株式会社 | ガラス容器の擦り傷遮蔽用組成物 |
RU2045472C1 (ru) * | 1992-09-04 | 1995-10-10 | Казаков Марк Евгеньевич | Способ получения углеродного волокнистого материала |
DE4330967A1 (de) * | 1993-09-13 | 1995-03-16 | Pfersee Chem Fab | Organische Siliciumverbindungen enthaltende Zusammensetzungen für die Behandlung von Fasermaterialien |
DE4415062B4 (de) * | 1994-04-29 | 2004-04-01 | Stockhausen Gmbh & Co. Kg | Mittel und Verfahren zur Hydrophobierung von Ledern und Pelzen |
JPH09228255A (ja) * | 1996-02-15 | 1997-09-02 | Toshiba Silicone Co Ltd | 繊維処理剤 |
US5766322A (en) * | 1996-10-30 | 1998-06-16 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Organopolysiloxane waterproofing treatment for porous ceramics |
FR2760759B1 (fr) * | 1997-03-14 | 1999-06-11 | Carbone Ind | Procede de realisation de textures activees en fibres de carbone |
JPH11240779A (ja) * | 1998-02-27 | 1999-09-07 | Tokai Carbon Co Ltd | Si含有多孔質炭素材の製造方法 |
US6605123B1 (en) * | 1999-04-16 | 2003-08-12 | General Electric Company | Silicone finishing compositions and processes |
-
1999
- 1999-12-06 FR FR9915329A patent/FR2801907B1/fr not_active Expired - Fee Related
-
2000
- 2000-05-12 UA UA2002064660A patent/UA72780C2/uk unknown
- 2000-12-05 AU AU21834/01A patent/AU2183401A/en not_active Abandoned
- 2000-12-05 JP JP2001544410A patent/JP4651256B2/ja not_active Expired - Lifetime
- 2000-12-05 EP EP00985407A patent/EP1259665B1/fr not_active Expired - Lifetime
- 2000-12-05 MX MXPA02005624A patent/MXPA02005624A/es active IP Right Grant
- 2000-12-05 AT AT00985407T patent/ATE265560T1/de active
- 2000-12-05 DE DE60010343T patent/DE60010343T2/de not_active Expired - Lifetime
- 2000-12-05 WO PCT/FR2000/003389 patent/WO2001042544A2/fr active IP Right Grant
- 2000-12-05 RU RU2002115274/04A patent/RU2256013C2/ru not_active IP Right Cessation
- 2000-12-05 US US10/148,778 patent/US7226639B2/en not_active Expired - Lifetime
- 2000-12-05 BR BRPI0016124-1A patent/BR0016124B1/pt not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO0142544A3 * |
Also Published As
Publication number | Publication date |
---|---|
FR2801907A1 (fr) | 2001-06-08 |
EP1259665B1 (fr) | 2004-04-28 |
JP2003516478A (ja) | 2003-05-13 |
UA72780C2 (en) | 2005-04-15 |
MXPA02005624A (es) | 2004-09-10 |
US7226639B2 (en) | 2007-06-05 |
DE60010343D1 (de) | 2004-06-03 |
DE60010343T2 (de) | 2005-05-04 |
ATE265560T1 (de) | 2004-05-15 |
JP4651256B2 (ja) | 2011-03-16 |
BR0016124A (pt) | 2002-11-19 |
FR2801907B1 (fr) | 2002-03-01 |
AU2183401A (en) | 2001-06-18 |
RU2256013C2 (ru) | 2005-07-10 |
BR0016124B1 (pt) | 2012-01-10 |
WO2001042544A2 (fr) | 2001-06-14 |
US20020182139A1 (en) | 2002-12-05 |
RU2002115274A (ru) | 2004-01-10 |
WO2001042544A3 (fr) | 2001-12-27 |
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