NO140754B - PROCEDURE FOR THE MANUFACTURE OF PLASTIC ARTICLES OF PLASTIC REINFORCED WITH A BONDED FIBER PATH AND MICROSPHERES - Google Patents
PROCEDURE FOR THE MANUFACTURE OF PLASTIC ARTICLES OF PLASTIC REINFORCED WITH A BONDED FIBER PATH AND MICROSPHERES Download PDFInfo
- Publication number
- NO140754B NO140754B NO742641A NO742641A NO140754B NO 140754 B NO140754 B NO 140754B NO 742641 A NO742641 A NO 742641A NO 742641 A NO742641 A NO 742641A NO 140754 B NO140754 B NO 140754B
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- Prior art keywords
- microspheres
- fiber web
- expanded
- volume
- plastic
- Prior art date
Links
- 239000004005 microsphere Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 6
- 239000004033 plastic Substances 0.000 title claims abstract description 5
- 229920003023 plastic Polymers 0.000 title claims abstract description 5
- 239000000835 fiber Substances 0.000 claims description 35
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 4
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 claims description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 description 11
- 229920000642 polymer Polymers 0.000 description 10
- 239000004753 textile Substances 0.000 description 9
- 241000628997 Flos Species 0.000 description 6
- 239000004816 latex Substances 0.000 description 6
- 229920000126 latex Polymers 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 229920000728 polyester Polymers 0.000 description 6
- 229920002239 polyacrylonitrile Polymers 0.000 description 5
- 229920006305 unsaturated polyester Polymers 0.000 description 5
- 238000004132 cross linking Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229920000297 Rayon Polymers 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000002964 rayon Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 239000004604 Blowing Agent Substances 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000001282 iso-butane Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
- D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
- D04H1/645—Impregnation followed by a solidification process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/02—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements, e.g. non-specified reinforcements, fibrous reinforcing inserts and fillers, e.g. particulate fillers, incorporated in matrix material, forming one or more layers and with or without non-reinforced or non-filled layers
- B29C70/021—Combinations of fibrous reinforcement and non-fibrous material
- B29C70/025—Combinations of fibrous reinforcement and non-fibrous material with particular filler
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/435—Polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0076—Microcapsules
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Textile Engineering (AREA)
- Dispersion Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Reinforced Plastic Materials (AREA)
- Nonwoven Fabrics (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Fremgangsmåte for fremstilling av formede artikler av plast armert med en bundet fiberbane og mikrosfærer.Process for the production of shaped articles of plastic reinforced with a bonded fibrous web and microspheres.
Description
Det er kjent å forsterke plast, såsom umettede polyestre og epoksyharpikser ved å inkludere i slike harpikser en fiberbane såsom en bundet eller ubundet glassfibermatte, en glasstekstil, It is known to reinforce plastics such as unsaturated polyesters and epoxy resins by including in such resins a fiber web such as a bonded or unbonded glass fiber mat, a glass textile,
en bundet fiberfloss eller tekstil basert på liniære polymerer, såsom polyestre, polyamider, polyolefiner og lignenJe. I slike prosesser impregneres forst fiberbanen med den ennå flytende og uherdete polymer, som inneholder et herdemiddel eller et fornetningsmiddel, hvoretter fiberbanen bringes til den onskede form og får herde. a bonded fiber floss or textile based on linear polymers, such as polyesters, polyamides, polyolefins and the like. In such processes, the fiber web is first impregnated with the still liquid and uncured polymer, which contains a curing agent or a cross-linking agent, after which the fiber web is brought to the desired shape and allowed to harden.
I den hensikt å spare vekt for en gitt materialtykkelse har In order to save weight for a given material thickness has
det tidligere vært forsokt å gi polymeren en skumstruktur ved å inkludere ekspanderte mikrosfærer deri. it has previously been attempted to give the polymer a foam structure by including expanded microspheres therein.
Slike mikrosfærer er kommersielt tilgjengelige både i ekspan- Such microspheres are commercially available both in expan-
dert form og i ikke-ekspandert form. Mikrosfærene kan bestå av polymerer av vinylidenklorid eller kopolymerer derav, f.eks. dert form and in non-expanded form. The microspheres can consist of polymers of vinylidene chloride or copolymers thereof, e.g.
med akrylonitril og om onsket andre monomerer, og hvor mikrosfærene inneholder en viss mengde blåsemiddel, såsom isobutan, with acrylonitrile and, if desired, other monomers, and where the microspheres contain a certain amount of blowing agent, such as isobutane,
i kjernen. I ikke-ekspandert tilstand har mikrosfærene én diameter eksempelvis i området 4-20 p. m og en spesifikk vekt i området 0,65 - 0,75 g/cm^. Ved romtemperatur er disse sfærer me- in the core. In the non-expanded state, the microspheres have one diameter, for example in the range 4-20 µm and a specific weight in the range 0.65 - 0.75 g/cm^. At room temperature, these spheres are me-
get stabile, men når de oppvarmes til polymerens eller kopoly-ir.erens mykningstemperatur ekspanderes disse av det innelukkede blåsematerial til et volum som er mange ganger storre enn det opprinnelige volum. I de kommersielt tilgjengelige materialer er denne ekspanderingstemperatur vanligvis i området 90 - 120 C. Når de oppvarmes til en ennå hoyere temperatur er det en fare get stable, but when they are heated to the softening temperature of the polymer or copolymer, these are expanded by the enclosed blowing material to a volume that is many times larger than the original volume. In the commercially available materials this expansion temperature is usually in the range 90 - 120 C. When they are heated to an even higher temperature there is a danger
for at sfærene sprekker som folge av det indre trykk, hvorefter den blote polymer faller samme, hvilket ikke er onskelig. De for the spheres to crack as a result of the internal pressure, after which the bare polymer falls the same, which is not desirable. The
ekspanderte sfærer har en diameter eksempelvis i området ,10-100 / an og en volumvekt eksempelvis i området 0,01-0,02 g/cm3. expanded spheres have a diameter, for example, in the range .10-100 / an and a volume weight, for example, in the range 0.01-0.02 g/cm3.
Hvis man forsoker å blande slike mikrosfærer i ekspandert tilstand med en flytende umettet polyester har det vist seg å være meget vanskelig å oppnå en homogen blanding som folge av store forskjeller i tilsynelatende spesifikk vekt mellom polyesteren og de ekspanderte sfærer, ytterligere kan sfærene avgi stov og er meget brysomme ved inhalering. If one attempts to mix such microspheres in an expanded state with a liquid unsaturated polyester, it has been found to be very difficult to achieve a homogeneous mixture as a result of large differences in apparent specific gravity between the polyester and the expanded spheres, furthermore the spheres can emit dust and are very troublesome when inhaled.
På den annen side er det overhode ikke mulig å blande ikke-ekspanderte sfærer med den flytende polymer, fordi sfærene kun kan ekspanderes ved oppvarmning, hvilket som regel ikke er tillatelig idet fornetning av polymeren vil påbegynne. On the other hand, it is not at all possible to mix non-expanded spheres with the liquid polymer, because the spheres can only be expanded by heating, which is usually not permissible as cross-linking of the polymer will begin.
Det er derfor et bestemt behov for midler for å innarbeide ekspanderte mikrosfærer på en lett og velkontrollerbar måte i den flytende polymer. There is therefore a definite need for means to incorporate expanded microspheres in an easy and well-controlled manner into the liquid polymer.
Nå tilveiebringer den foreliggende oppfinnelse en fremgangsmåte Now, the present invention provides a method
for fremstilling av formede artikler, som omfatter å impregnere en bundet fiberbane med en flytende blanding av en harpiks og et herdemiddel for denne, forme blandingen til den onskede form og herde harpiksen, og hvor prosessen er særpreget ved at det anvendes en bunden fiberbane som inneholder 10-60 volum%, regnet på volumet av den bundne fiberbane, ekspanderte mikrosfærer. for the production of shaped articles, which comprises impregnating a bonded fiber web with a liquid mixture of a resin and a curing agent for this, forming the mixture into the desired shape and curing the resin, and where the process is characterized by the use of a bonded fiber web containing 10-60% by volume, calculated on the volume of the bonded fiber web, expanded microspheres.
Disse mikrosfærer kan fremstilles ved en hvilken som helst av These microspheres can be prepared by any of
de konvensjonelle måter og fra alle materialer som anvendes for dette formål. Mest egnet er mikrosfærer som i ekspandert tilstand har en diameter på lO-lOO/ im. ■ Materialet fra hvil- the conventional ways and from all materials used for this purpose. Most suitable are microspheres which in the expanded state have a diameter of 10-100 µm. ■ The material from rest
ket mikrosfærene fremstilles må naturligvis være resistente over-for den ikke-herdete harpiks. Meget velegnet er sfærer av en kopolymer av vinylidenklorid og akrylonitril. ket the microspheres are produced must of course be resistant to the uncured resin. Very suitable are spheres of a copolymer of vinylidene chloride and acrylonitrile.
En bundet fiberbane som inneholder mikrosfærer er beskrevet i U.S. patent nr. 3.676.283, hvor det er foreslått å fremstille A bonded fiber web containing microspheres is disclosed in U.S. Pat. patent no. 3,676,283, where it is proposed to manufacture
en ikke-vevet tekstil inneholdende slike sfærer. For å oppnå a non-woven fabric containing such spheres. To achieve
dette formål i henhold til patentet legges forst en bane av for this purpose, according to the patent, a path is first laid
stablefibre hvoretter banen besproytes med eh opplosning av staple fibres, after which the web is sprayed with a solution of
et konvensjonelt, herdende bindemiddel for ikke-vevede tekstiler , og hvor mikrosfærer i ikke-ekspandert tilstand er disper-gert i bindemiddelopplosningen. Etter at banen av fibre, såsom rayon-fibre, er fuktet på denne.måte, fores banen gjennom en ovn og torkes og deretter oppvarmes ved en temperatur som på; a conventional, hardening binder for non-woven textiles, and where microspheres in a non-expanded state are dispersed in the binder solution. After the web of fibers, such as rayon fibers, is wetted in this manner, the web is passed through an oven and dried and then heated at a temperature such as;
den ene side er tilstrekkelig hoy til å herde bindemidlet og på den annen side til å forårsake at mikrosfærene ekspanderery og hvor temperaturen ikke kan være så hoy at sfærene sprekker som folge av det indre trykk. En temperatur på 88-120°C er velegnet ifolge det nevnte patentskrift. on the one hand is sufficiently high to harden the binder and on the other hand to cause the microspheres to expand and where the temperature cannot be so high that the spheres burst as a result of the internal pressure. A temperature of 88-120°C is suitable according to the aforementioned patent.
Ifolge patentet foreslås at denne fremgangsmåte anvendes for According to the patent, it is proposed that this method be used for
å fremstille en meget voluminos, ikke-vevet tekstil med hoy vannabsorpsjon, slik at produktet eksempelvis kan anvendes som isolasjonsmateriale, torke- og vaskekluter. Ytterligere er det i patentet angitt at tilstedeværelsen av disse sfærer reduserer den ikke-vevede tekstils transparens og luftpermea-bilitet. to produce a very voluminous, non-woven textile with high water absorption, so that the product can for example be used as insulation material, drying and washing cloths. Furthermore, it is stated in the patent that the presence of these spheres reduces the non-woven textile's transparency and air permeability.
Ikke-vevede tekstiler inneholdende slike mikrosfærer Non-woven fabrics containing such microspheres
er meget anvendbare for anvendelse i henhold til oppfinnelsen. are very applicable for use according to the invention.
I stedet for rayon-fibre kan det også anvendes andre fibre, Instead of rayon fibers, other fibers can also be used,
såsom g.lassfibre, polyesterfibre, nylonfibre etc, og i stedet for den ikke-vevede tekstil er det også mulig å anvende en tekstil hvori mikrosfærene er innarbeidet på en tilsvarende måte. such as glass fibres, polyester fibres, nylon fibres, etc., and instead of the non-woven textile it is also possible to use a textile in which the microspheres are incorporated in a similar way.
Det er naturligvis også mulig på forhånd' å innarbeide mikrosfærene separat i fiberbanen i form av en vanndispersjon,eller mikrosfærene kan på forhånd eller etter impregnering forde- It is of course also possible beforehand to incorporate the microspheres separately into the fiber web in the form of a water dispersion, or the microspheres can be prepared beforehand or after impregnation
les i bane i den onskede mengde. I begge tilfeller vil de hefte til fibrene under fornetningen av bindemidlet. read into orbit in the desired amount. In both cases, they will adhere to the fibers during the cross-linking of the binder.
Under ekspansjonen av sfærene under torke og fornetning av bindemidlet må det tas hensyn til at sfærenes temperatur i banen ikke stiger til en verdi ved hvilken en vesentlig del av mikrosfærene sprekker, hvilket vil fore til at det sammenfalte veggmateriale utgjor kun et lite volum, slik at den onskede hensikt ikke oppnås, nemlig den å redusere den nodvendige mengde av impregneringsharpiksen. I de kommersielt tilgjengelige sfærer er denne maksimumstemperatur vanligvis ca. 120°C, og bindemidlet bor derfor velges slik at det er tilstrekkelig for-nettet ved eller under denne temperatur. Dette er tilfellet for konvensjonelle bindemidler. During the expansion of the spheres during drying and cross-linking of the binder, care must be taken that the temperature of the spheres in the web does not rise to a value at which a significant part of the microspheres burst, which will lead to the collapsed wall material forming only a small volume, so that the desired purpose is not achieved, namely that of reducing the required amount of the impregnation resin. In the commercially available spheres, this maximum temperature is usually approx. 120°C, and the binder should therefore be chosen so that it is sufficiently cross-linked at or below this temperature. This is the case for conventional binders.
Mengden av mikrosfærer kan naturligvis variere sterkt. Imidlertid velges mengden foretrinnsvis slik at etter ekspansjon vil volumet ikke utgjore mere enn 50 volum% av volumet av den ekspanderte fiberbane. Hvis sfærene utgjor mere enn 60 volum% av den ekspanderte fiberbane vil vanligvis styrken av det ferdige produkt avta. Under ekspansjonen av sfærene vil også det tilsynelatende volum av fiberbanen tilta. En mengde på 10-60 volum% og fortrinnsvis 30-50 volum%, uegnet på volumet av den ekspanderte fiberbane synes å være meget passende. For enhver gitt type av mikrosfærer kan det lett beregnes hvilket volum ikke-ekspanderte sfærer som må tilsettes. The amount of microspheres can naturally vary greatly. However, the amount is preferably chosen so that after expansion the volume will not constitute more than 50% by volume of the volume of the expanded fiber web. If the spheres make up more than 60% by volume of the expanded fiber web, the strength of the finished product will usually decrease. During the expansion of the spheres, the apparent volume of the fiber web will also increase. An amount of 10-60% by volume and preferably 30-50% by volume, unsuitable for the volume of the expanded fiber web seems to be very suitable. For any given type of microspheres, the volume of unexpanded spheres that must be added can easily be calculated.
Fiberbanens natur kan variere meget sterkt. F.eks. kan det anvendes glasstekstiler, glassfibermatter, fiberfloss basert på alle typer naturlige eller syntetiske fibre, nålede filt eller tekstiler basert på naturlige eller syntetiske fibre. The nature of the fiber optic cable can vary greatly. E.g. glass textiles, glass fiber mats, fiber floss based on all types of natural or synthetic fibers, needle felt or textiles based on natural or synthetic fibers can be used.
Som et bindemiddel kan alle vanlige bindemidler anvendes, som kan fornettes eller herdes ved en temperatur som er forenelig ned ekspanderingen av mikrosfærene. As a binder, all common binders can be used, which can be cross-linked or cured at a temperature compatible with the expansion of the microspheres.
Et eksempel på et egnet bindemiddel er en polyakrylonitril-lateks. . En slik bindemiddellateks inneholder partikler med en diameter eksempelvis på 2 / lm. Fiberbanene anvendt ifolge foreliggende oppfinnelse og som inneholder ekspanderte mikrosfærer kan anvendes som forsterkning for fornetbare polymerer på akkurat den samme måten som fiberbanene som anvendes for dette formål. An example of a suitable binder is a polyacrylonitrile latex. . Such a binder latex contains particles with a diameter of, for example, 2 / lm. The fiber webs used according to the present invention and which contain expanded microspheres can be used as reinforcement for crosslinkable polymers in exactly the same way as the fiber webs used for this purpose.
Imidlertid er de formede artikler fordelaktige i sammenligning med de som er blitt fremstilt med konvensjonelle fiberbaner ved at de på den ene side er lettere og billigere og på den annen side har storre stotstyrke enn den andre,og ved fremstil-lingen av disse artikler er det ikke nodvendig med noen ytterligere behandling sammenlignet med de kjente prosesser. However, the shaped articles are advantageous compared to those produced with conventional fiber webs in that they are on the one hand lighter and cheaper and on the other hand have greater impact strength than the other, and in the production of these articles there is no further processing is necessary compared to the known processes.
EKSEMPEL EXAMPLE
Det anvendes en fremdeles ikke-bundet fiberbane med en flate-vekt pa 60 g/m bestående av polyesterfibre med en finhet pa 1,5 dtex. Denne bane impregneres med en lateks av polyakrylonitril i hvilken lateks ikke-ekspanderte mikrosfærer er dis-pergert. A still non-bonded fiber web with a basis weight of 60 g/m consisting of polyester fibers with a fineness of 1.5 dtex is used. This web is impregnated with a latex of polyacrylonitrile in which latex non-expanded microspheres are dispersed.
Denne lateks inneholder 20 vekts% faststoff, nemlig 14 vekts% polyakrylonitril og 6 vekts% mikrosfærer. Lateksen innarbeides i fiberbanen i en slik mengde at denne inneholder 18 g/m<2 >polyakrylonitril og 42 g/m■p" mikrosfærer. Deretter torkes den impregnerte floss og oppvarmes til en maksirnaltemperatur på 118°C. Under torkingen fordamper vann, og polyakrylonitril fornettes og mikrosfærene ekspanderes. This latex contains 20% by weight of solids, namely 14% by weight of polyacrylonitrile and 6% by weight of microspheres. The latex is incorporated into the fiber web in such an amount that it contains 18 g/m<2 >polyacrylonitrile and 42 g/m■p" microspheres. The impregnated floss is then dried and heated to a maximum temperature of 118°C. During drying, water evaporates, and polyacrylonitrile is cross-linked and the microspheres are expanded.
Den erholdte fiberfloss er meget velegnet for behandling med umettet polyester ved å impregnere flossen med et eksempelvis 9 ganger dens vekt med |Dolyester inneholdende fornetningsmiddel, og deretter forme den impregnerte floss til den onskede form, i foreliggende tilfelle til et flatt ark og deretter herde polyesteren ved romtemperatur. The fiber floss obtained is very suitable for treatment with unsaturated polyester by impregnating the floss with, for example, 9 times its weight with |Dolyester containing crosslinking agent, and then shaping the impregnated floss into the desired shape, in the present case into a flat sheet, and then curing the polyester at room temperature.
Det erholdte ark inneholdt de forskjellige bestanddeler i de folgende mengder: The sheet obtained contained the various components in the following amounts:
Således sammenlignet med et ikke-ekspandert ark av polyester har den nodvendige mengde umettet polyester blitt redusert til litt under halvparten, og ytterligere er flatevekten redusert til mindre enn halvparten ved en ellers lik arktykkelse. Thus, compared to a non-expanded sheet of polyester, the required amount of unsaturated polyester has been reduced to slightly less than half, and further the surface weight has been reduced to less than half for an otherwise equal sheet thickness.
Om onsket kan arket sluttbearbeides ved å belegge dette på en eller begge sider med et tynt lag umettet polyester. If desired, the sheet can be finished by coating it on one or both sides with a thin layer of unsaturated polyester.
Slike ark kan fordelaktig anvendes for alle typer strukturelle formål, eksempelvis i båtkonstruksjoner. Such sheets can advantageously be used for all types of structural purposes, for example in boat constructions.
Claims (3)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NLAANVRAGE7310138,A NL172349C (en) | 1973-07-20 | 1973-07-20 | FORMED ARTICLES INCLUDING A TIED FIBER PATH. |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO742641L NO742641L (en) | 1975-02-17 |
| NO140754B true NO140754B (en) | 1979-07-30 |
| NO140754C NO140754C (en) | 1979-11-07 |
Family
ID=19819297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO742641A NO140754C (en) | 1973-07-20 | 1974-07-18 | PROCEDURE FOR THE MANUFACTURE OF PLASTIC ARTICLES OF PLASTIC REINFORCED WITH A BONDED FIBER PATH AND MICROSPHERES |
Country Status (11)
| Country | Link |
|---|---|
| AT (1) | AT338001B (en) |
| BE (1) | BE817908A (en) |
| CH (1) | CH599269A5 (en) |
| DE (1) | DE2433427C2 (en) |
| DK (1) | DK132744C (en) |
| FI (1) | FI57068C (en) |
| FR (1) | FR2237743B1 (en) |
| GB (1) | GB1427647A (en) |
| NL (1) | NL172349C (en) |
| NO (1) | NO140754C (en) |
| SE (1) | SE404154B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0021563B1 (en) * | 1979-04-20 | 1984-08-01 | The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and | Resin materials, their use and article thereof |
| DE3126242A1 (en) * | 1981-07-03 | 1983-01-20 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Moulding of sandwich construction and semi-finished product for the production thereof |
| NL8500242A (en) * | 1985-01-29 | 1986-08-18 | Firet Bv | METHOD FOR MANUFACTURING A FIBER FLUSH INCLUDING MICROBOLLES. |
| DE3540537A1 (en) * | 1985-11-15 | 1987-05-21 | Klaus Kurt Koelzer | REINFORCEMENT MATERIAL |
| DE3545521A1 (en) * | 1985-12-20 | 1987-07-02 | Ipa Bauchemie Gmbh | DEFORMABLE MOLDED BODY AND USE THEREOF AND METHOD FOR THE PRODUCTION THEREOF |
| SE508051C2 (en) * | 1991-06-12 | 1998-08-17 | Glasis Ab | Composite materials and their use and process for their preparation |
| US5792398A (en) * | 1991-06-12 | 1998-08-11 | Glasis Holding Ab | Hot pressing method of forming a composite laminate containing expanded thermoplastic particles |
| EP1010793B1 (en) | 1998-12-16 | 2008-02-06 | Lantor B.V. | A core material for closed mould systems |
| US6497787B1 (en) * | 2000-04-18 | 2002-12-24 | Owens-Corning Veil Netherlands B.V. | Process of manufacturing a wet-laid veil |
| DE10114708A1 (en) * | 2001-03-26 | 2002-10-24 | Klaus-Kurt Koelzer | Reinforcement material with volumized fibers |
| WO2006105814A1 (en) * | 2005-04-04 | 2006-10-12 | Spheretex Gmbh | Production of fibre composite materials inclosed laminating systems and associated products |
| DE102010047533A1 (en) * | 2010-09-13 | 2012-03-15 | Eswegee Vliesstoff Gmbh | Nonwoven fabric for acoustic applications with increased sound absorption properties |
| ES2971409T3 (en) * | 2019-12-11 | 2024-06-05 | Owens Corning Intellectual Capital Llc | Nonwoven mat with reduced permeability and increased gauge |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3316139A (en) * | 1964-12-31 | 1967-04-25 | Standard Oil Co | Plastic structure containing fibrous layers and hollow glass spheres |
| US3582388A (en) * | 1968-06-24 | 1971-06-01 | Federal Huber Co | Rigidfied synthetic resin article and method for making same |
| US3676288A (en) * | 1970-05-04 | 1972-07-11 | Kendall & Co | Low-density bonded nonwoven fabrics and process therefor |
-
1973
- 1973-07-20 NL NLAANVRAGE7310138,A patent/NL172349C/en not_active IP Right Cessation
-
1974
- 1974-07-11 DE DE2433427A patent/DE2433427C2/en not_active Expired
- 1974-07-15 SE SE7409265A patent/SE404154B/en not_active IP Right Cessation
- 1974-07-16 FR FR7424683A patent/FR2237743B1/fr not_active Expired
- 1974-07-18 NO NO742641A patent/NO140754C/en unknown
- 1974-07-18 DK DK387674A patent/DK132744C/en not_active IP Right Cessation
- 1974-07-18 FI FI2205/74A patent/FI57068C/en active
- 1974-07-19 AT AT600474A patent/AT338001B/en not_active IP Right Cessation
- 1974-07-19 GB GB3205374A patent/GB1427647A/en not_active Expired
- 1974-07-19 BE BE7000546A patent/BE817908A/en not_active IP Right Cessation
- 1974-07-19 CH CH996474A patent/CH599269A5/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NO140754C (en) | 1979-11-07 |
| DK387674A (en) | 1975-03-03 |
| BE817908A (en) | 1975-01-20 |
| FR2237743B1 (en) | 1979-02-16 |
| GB1427647A (en) | 1976-03-10 |
| NL172349B (en) | 1983-03-16 |
| SE404154B (en) | 1978-09-25 |
| CH599269A5 (en) | 1978-05-31 |
| FI57068B (en) | 1980-02-29 |
| DK132744C (en) | 1976-07-19 |
| DE2433427A1 (en) | 1975-02-06 |
| ATA600474A (en) | 1976-11-15 |
| DE2433427C2 (en) | 1983-01-13 |
| SE7409265L (en) | 1975-01-21 |
| NL172349C (en) | 1983-08-16 |
| FR2237743A1 (en) | 1975-02-14 |
| FI57068C (en) | 1980-06-10 |
| AT338001B (en) | 1977-07-25 |
| NL7310138A (en) | 1975-01-22 |
| DK132744B (en) | 1976-02-02 |
| FI220574A (en) | 1975-01-21 |
| NO742641L (en) | 1975-02-17 |
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