WO2019016075A1 - Matériau synthétique renforcé par des fibres naturelles, pièce en un matériau synthétique renforcé par des fibres naturelles, granulat en un matériau synthétique renforcé par des fibres naturelles, procédé pour la fabrication d'un matériau synthétique renforcé par des fibres naturelles - Google Patents

Matériau synthétique renforcé par des fibres naturelles, pièce en un matériau synthétique renforcé par des fibres naturelles, granulat en un matériau synthétique renforcé par des fibres naturelles, procédé pour la fabrication d'un matériau synthétique renforcé par des fibres naturelles Download PDF

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Publication number
WO2019016075A1
WO2019016075A1 PCT/EP2018/068997 EP2018068997W WO2019016075A1 WO 2019016075 A1 WO2019016075 A1 WO 2019016075A1 EP 2018068997 W EP2018068997 W EP 2018068997W WO 2019016075 A1 WO2019016075 A1 WO 2019016075A1
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WO
WIPO (PCT)
Prior art keywords
reinforced plastic
natural fiber
natural
fibers
water
Prior art date
Application number
PCT/EP2018/068997
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German (de)
English (en)
Inventor
Alfred RAU
Original Assignee
Schlayer, Marlene
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schlayer, Marlene filed Critical Schlayer, Marlene
Publication of WO2019016075A1 publication Critical patent/WO2019016075A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/045—Reinforcing macromolecular compounds with loose or coherent fibrous material with vegetable or animal fibrous material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/12—Powdering or granulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/201—Pre-melted polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/10—Reinforcing macromolecular compounds with loose or coherent fibrous material characterised by the additives used in the polymer mixture
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2300/00—Characterised by the use of unspecified polymers
    • C08J2300/14—Water soluble or water swellable polymers, e.g. aqueous gels
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers

Definitions

  • Synthetic fiber reinforced with natural fibers component made of a natural fiber reinforced plastic, granules of a natural fiber reinforced plastic, process for
  • the invention relates to a reinforced with natural fibers plastic of the type specified in the preamble of claim 1, a component made of a natural fiber reinforced plastic, granules of a natural fiber reinforced plastic and a method for producing a natural fiber reinforced plastic.
  • Fiber-reinforced plastics are used in the field of technology in many areas. Compared with other materials, they have high specific stiffnesses, in particular flexural stiffnesses, and strengths with a low specific weight and can absorb high stresses, in particular high yield stresses.
  • Natural fibers have a lower density than glass fibers, which in turn can lead to a significant weight saving of a component.
  • Another advantage is the improved work safety. Glass fibers are much more brittle than natural fibers, which results in fiberglass-reinforced plastics compared to natural fiber reinforced plastics increased susceptibility to splintering.
  • the invention has for its object to provide a natural fiber reinforced plastic of the generic type with a new material composition. Another object of the invention is to provide a component of a natural fiber reinforced plastic with a new material composition. Another object of the invention is to provide granules of a natural fiber reinforced plastic with a new material composition. Another object of the invention is to provide a method of making a natural fiber reinforced plastic having a novel material composition.
  • This object is achieved with respect to the natural fiber reinforced plastic by a natural fiber reinforced plastic with the features of claim 1.
  • the object is achieved by a component made of a natural fiber reinforced plastic having the features of claim 8.
  • the object is achieved by a granules of a natural fiber reinforced plastic with the features of claim 9.
  • the object is achieved by a method for producing a natural fiber-reinforced plastic having the features of claim 10.
  • the natural fiber reinforced plastic according to the invention consists of a thermoplastic and natural fibers.
  • the thermoplastic material serves as Plastic matrix in which the natural fibers are embedded. Even before the natural fibers are added to the thermoplastic, the natural fibers are dried. Nevertheless, the natural fibers may contain residual moisture, for example water. The mass fraction of the residual moisture of natural fibers is advantageously less than 0.5%, preferably less than 0.16%.
  • the natural fiber reinforced plastic contains a water-absorbing additive. The residual moisture remaining in the natural fibers dissolves in the production process of the natural fiber-reinforced plastic from the natural fiber and is bound via the water-absorbing additive in natural fiber reinforced plastic. As a result, a bubble formation in natural fiber reinforced plastic, which results from the evaporation of the residual moisture, avoided.
  • the plastic reinforced with natural fibers has very good physical properties, such as high strength or high elasticity.
  • the aggregate consists of zeolite.
  • Zeolites are crystalline aluminosilicates. Zeolites have a structure of micropores and / or channels. In these structures, liquid, in particular water, can be stored. The zeolites therefore serve as liquid storage, especially as a water reservoir. Therefore, the residual moisture present in the natural fiber reinforced plastic can be absorbed in the structures formed by the zeolites.
  • the zeolites can absorb 4 times their own weight of water.
  • the zeolites are temperature resistant at a temperature of at least 1200 ° C, preferably of at least 600 ° C, in particular of at least 300 ° C.
  • the additive consists of superabsorbent polymers.
  • the superabsorbent polymers are advantageously formed from crosslinked or partially crosslinked polyacrylates, such as sodium polyacrylate and / or potassium acrylate.
  • the superabsorbent polymers advantageously contain acrylamide.
  • Superabsorbent polymers absorb a multiple, preferably at least 40 times, advantageously at least 100 times, in particular at least 100 times, their own weight of polar liquids. Therefore superabsorbent polymers serve as a liquid storage, especially as a water reservoir.
  • the residual moisture present in the natural fiber reinforced plastic can be absorbed by the superabsorbent polymers.
  • the superabsorbent polymers are very heat resistant.
  • the natural fiber reinforced plastic contains at least two water-absorbing additives, with an aggregate of zeolites and another additive of superabsorbent polymers.
  • the mineral additives are selected from the group of substances consisting of glass, ceramic glass frits, potassium feldspar, nepheline syenite or colemanite.
  • the pores formed by the superabsorbent polymers are stabilizing, thin-walled hollow spheres and / or as
  • the pores are more temperature resistant, and the natural fiber reinforced plastic can at high
  • the residual moisture from the natural fibers in natural fiber reinforced plastic bound.
  • the residual moisture content of natural fibers at a temperature of the natural fiber reinforced plastic of at least 1200 ° C, preferably of at least 600 ° C, in particular of at least 300 ° C, permanently bonded. This allows the natural fiber reinforced plastic to be produced and processed at high temperatures without damaging the natural fibers.
  • the high processing temperature results in a low viscosity of the natural fiber reinforced plastic. Accordingly, in a coextrusion, the natural fibers in the plastic matrix can be distributed more uniformly, resulting in homogeneous material properties of natural fiber reinforced plastic.
  • the natural fibers are bamboo fibers.
  • the strength, impact strength and the like of the fiber reinforced plastic can be significantly increased. Due to the bamboo fibers, the natural fiber reinforced plastic can have a long-lasting natural UV protection.
  • a component provided which consists of a natural fiber reinforced plastic.
  • a component can be produced for example by means of compression molding, natural fiber injection molding or by extrusion. Other manufacturing methods are possible.
  • the component according to the invention may advantageously have a low specific weight and a high rigidity.
  • granules, in particular pellets are provided which consist of a natural fiber-reinforced plastic.
  • Such granules, in particular pellets are produced by means of extrusion processes.
  • the extrudate z. B. formed into uniform round strands, which are cooled down in a water bath and then cut.
  • granules or pellets may also be made by the underwater pelletizing process.
  • the granules according to the invention in particular pellets, can advantageously have a low specific weight and a high rigidity.
  • a process is provided for producing a natural fiber-reinforced plastic, comprising the following steps: a) coextrusion of the thermoplastic, of the water-absorbing additive, in particular of the additive for micropore formation, and of the natural fibers,
  • the temperature of the thermoplastic material, the water-absorbing additive, in particular the aggregate for micro pore formation, and the natural fibers at least 1200 ° C, especially at least 600 ° C, preferably at least 300 ° C, in particular at least 240 ° C. Due to the high processing temperature of at least 300 ° C, in particular of at least 240 ° C, and the resulting low viscosity of the natural fiber reinforced plastic arise in the manufacturing and further processing process only lower frictional forces between production device and natural fiber reinforced plastic. As a result, the production device can be spared. The absorption of residual moisture in natural fiber reinforced plastic avoids blistering. Therefore, can also be caused by residual moisture
  • Natural fibers and zeolite Natural fibers and zeolite.
  • a matrix plastic, a natural fiber and a water-absorbing additive are mixed.
  • the matrix plastic used is 10 kg of dried polyamide.
  • the natural fibers are added in a conditioned, dried state to the plastic matrix.
  • the natural fibers have a residual moisture, wherein the mass fraction of the residual moisture corresponds to approximately up to 0.16% of the natural fiber.
  • the natural fiber is added by means of a metering unit which is connected to the extruder.
  • a maximum amount of natural fibers to be added to the plastic matrix is 70%, in particular 50%, advantageously 30%, of the total volume of the natural-fiber-reinforced plastic.
  • a necessary amount of water-absorbing additive to be added to the plastic matrix and the natural fibers is defined by the mass fraction of the residual moisture of the natural fibers. The greater the proportion of residual moisture in the natural fibers, the greater the amount of water-absorbing additive to be added to the natural-fiber-reinforced plastic.
  • the water-absorbing plastic consists of zeolite.
  • the maximum amount of anhydrous zeolite to be added is at most 5%, in an advantageous embodiment at most 10% of the mass of the plastic matrix. Accordingly, here the maximum mass of anhydrous zeolite is at most 0.2 kg, in an advantageous embodiment at most 0.4 kg.
  • the zeolite has a mean particle size of about 500 ⁇ . Zeolite is also a chalk substitute and may optionally not more than 70%>, in particular 50%>, advantageously 30%> correspond to the total mass of natural fiber reinforced plastic.
  • Natural fibers and superabsorbent polymers are Natural fibers and superabsorbent polymers.
  • the composition of the natural-fiber-reinforced plastic for the exemplary embodiment 1 differs in the selection and quantity of the water-absorbing additive.
  • a superabsorbent polymer is selected, which in the exemplary embodiment of
  • the amount of superabsorbent polymer to be added to the plastic matrix is about 0.05 kg.
  • the superabsorbent polymer has an average particle size of approximately 500 ⁇ m.
  • the superabsorbent polymer has a significantly higher absorption capacity than the zeolite. Therefore, compared to Embodiment 1, only a quarter of the amount of water-absorbent aggregate is necessary for the same moisture storage.
  • the production of a semifinished product or a granulate with a volume fraction of natural fibers of at least 90%>, in particular of at least 70%>, advantageously of at least 50%) of the total volume of natural fiber reinforced plastic is possible.
  • the moldings of embodiments 1 and 2 When cooled, the moldings of embodiments 1 and 2 have a particularly high impact resistance and strength. Drop marks on the moldings can be avoided due to the increased stiffness.
  • the natural fiber-reinforced plastics have a homogeneous distribution of the micropores.
  • An extruder for producing a natural fiber-reinforced plastic comprises, for example, a metering unit, a cylinder, an extruder screw arranged in the cylinder, a tempering device, an extrusion nozzle and a drive device.
  • the dosage unit contains a matrix plastic which is in granulated form.
  • the extruder screw has a first kneading area and a second kneading area. The first kneading zone is located at the connection of the dosing unit to the cylinder of the extruder.
  • the matrix plastic is fed into the cylinder via the metering unit and heated, melted and kneaded in the first section of the extruder screw.
  • the melt is in the advantageous embodiment at least 300 ° C, in particular at least 240 ° C.
  • the second section of the extruder screw begins at a connection of a further dosing unit for feeding the natural fibers into the melt.
  • the natural fibers are kneaded with the molten matrix plastic.
  • a water-absorbing additive is added to the mixture.
  • the water-absorbing aggregate which is metered as a function of the residual moisture of the natural fibers, is kneaded with the molten mixture.
  • the production of natural fiber reinforced plastic is not limited to the production technique described above, but can also be with similar process techniques such. B. with a planetary roller extruder, with a single or multi-screw extruder or the like. Perform.
  • the extrudate is then z. B. formed into uniform round strands, which are cooled down in a water bath and then cut.
  • granules or pellets may also be made by the underwater pelletizing process.
  • a production of granules or pellets is also possible by hot stamping.
  • a subsequent calibration step is required after the extrusion, which is optionally carried out in a vacuum and / or under water cooling.
  • any type of plastics can be used as the matrix component.
  • the matrix plastic is a polyamide.
  • the matrix plastic also from the group of Polypropylene, polyethylene, polyesters, polycarbonate or migmine, polylactides or others.
  • the natural fibers are bamboo fibers.
  • plant fibers fibers of animal origin or mineral fibers can be used.
  • Bast fibers, hard chamfers, seed fibers, flat, hemp, jute, ramie, sisal, kenaf, banana, coconut or even wood fibers or the like have proved to be particularly advantageous among the plant fibers.
  • zeolite As a water-absorbing additive zeolite can be used in an advantageous embodiment.
  • zeolites synthetic, but also naturally occurring zeolites can be used. Zeolites are crystalline aluminosilicates. By adding the zeolites into the mixture of a plastic matrix and natural fibers, micropores form in this microstructure, which correspond to network-like cavity networks. In these micropores, the water can be stored in a simple manner and thus serve the zeolite as a water reservoir or moisture buffer. The zeolite can take up to 4 times its own weight in water and release it again.
  • the zeolite in its structure at a temperature of at least 1200 ° C, preferably of at least 600 ° C, in particular of at least 300 ° C resistant.
  • the water or the residual moisture in natural fiber reinforced plastic can be taken up in the micropores of the zeolites and released again, without affecting the finished part in its structure.
  • a further addition of additives may be advantageous.
  • Superabsorbent polymers are plastics that absorb many times their own weight in polar liquids. Upon absorption of the liquid, the superabsorbent swells and forms a hydrogel.
  • the superabsorbent polymers can be synthetic or natural.
  • the mean grain size of the superabsorbent polymers is 500 ⁇ .
  • the superabsorbent polymers are selected from the group of substances consisting of crosslinked or partially crosslinked polyacrylates, such as sodium polyacrylate and / or potassium acrylate or acrylamide. Be particularly advantageous in the
  • the natural fiber-reinforced plastic may contain at least two water-absorbing additives.
  • the aggregates may consist of zeolite and of superabsorbent polymers.
  • the superabsorbent polymers can also be mixed with organic aggregates and / or with mineral aggregates.
  • mineral aggregates may be selected, for example, from the group of substances, mixture of finely ground glass, ceramic glass frits, potassium feldspar, nepheline syenite or colemanite.
  • Such mineral aggregates promote the formation of micropores to thin-walled hollow spheres and stabilizing ceramic Stützgewerken.
  • To form ceramic-lined pores it is also possible to use expanded, broken pearlite particles.
  • a mixture of expanded perlite particles in admixture with unblooded perlite dust, in particular with an average particle size of 800 ⁇ m, has proven to be particularly advantageous.
  • the pearlite dust expands and ceramizes so as to stabilize the resulting micropores.
  • a likewise advantageous embodiment of the natural-fiber-reinforced plastic can be made possible by the addition of metal organic frameworks. These lead in particular in conjunction with the water-absorbing additives zeolite to such micropores that allow high water storage in the natural fiber reinforced plastic even at higher temperatures between 240 ° C to 900 ° C, especially between 300 ° C to 900 ° C.
  • Another embodiment contains the aggregate core fiber pipe, which, in particular in combination with the superabsorbent polymers under the pores of the natural fiber reinforced plastic, allows an additional increase in dimensional stability and increased water storage.
  • sizing agent can be added as a binder between natural fiber and plastic matrix.
  • the composition of the plastic comprises a thermoplastic, a water-absorbing additive and further processed natural fibers, in particular carbon fibers.
  • the term natural fiber also includes a further processed natural fiber.
  • the carbon fibers are formed from further processed natural fibers.
  • Such carbon fibers are preferably made from a coking of natural fibers.
  • the natural fiber is carbonized in a pyrolysis process to the so-called biochar.
  • a comparatively very small amount of carbon dioxide is formed, in particular with respect to glass fibers.
  • the mass fraction of carbon dioxide in relation to the non-carbonized natural fiber is about 2%.
  • the production by means of pyrolysis of carbon fibers from natural fibers is comparatively environmentally friendly and at the same time gentle on the means of production.
  • the mass fraction of carbon in the biochar can be adjusted.
  • the natural fiber remains in its structure Essentially obtained, wherein the mass fraction of carbon in the
  • the carbon fiber can then be further processed on its own or in a mixture of additional fibers, in particular natural fibers.
  • bamboo fibers are preferably used as the starting material for producing a carbon fiber.
  • the bamboo fibers can be used as short fiber, middle fiber and / or as long fiber.
  • the use of bamboo fiber as a strand is also possible.
  • An advantage of the bamboo fibers is their comparatively low density of about 0.46 g / cm 3 . As a result, bamboo fibers have a low weight compared to other fibers with high tensile strength.
  • Another advantage of the charcoal compared to commercial coal is that there is no sulfur in the biochar. The presence of sulfur in the coal must be distilled out consuming during further processing.
  • the water-absorbing additives contained in the plastic reinforced with natural fibers can both store and release water.
  • Carbonized natural fibers are relatively dry and contain only very little moisture. Moisture can also be released by the additives in the fiber-reinforced plastic according to the invention, thereby improving the impact resistance of the plastic. Superabsorbents form a gel through which the dry carbonized fibers are lubricated.

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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)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

La présente invention concerne un matériau synthétique renforcé par des fibres naturelles, qui est constitué par un matériau synthétique thermoplastique et des fibres naturelles. Le matériau synthétique renforcé par des fibres naturelles contient en outre un agrégat absorbant l'eau. L'agrégat absorbant l'eau permet de lier de manière permanente une humidité résiduelle des fibres naturelles.
PCT/EP2018/068997 2017-07-20 2018-07-12 Matériau synthétique renforcé par des fibres naturelles, pièce en un matériau synthétique renforcé par des fibres naturelles, granulat en un matériau synthétique renforcé par des fibres naturelles, procédé pour la fabrication d'un matériau synthétique renforcé par des fibres naturelles WO2019016075A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102017006896.8 2017-07-20
DE102017006896 2017-07-20
DE102018003153.6A DE102018003153A1 (de) 2017-07-20 2018-04-18 Mit Naturfasern verstärkter Kunststoff, Bauteil aus einem naturfaserverstärkten Kunststoff, Granulat aus einem naturfaserverstärkten Kunststoff, Verfahren zur Herstellung eines naturfaserverstärkten Kunststoff
DE102018003153.6 2018-04-18

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WO2019016075A1 true WO2019016075A1 (fr) 2019-01-24

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PCT/EP2018/068997 WO2019016075A1 (fr) 2017-07-20 2018-07-12 Matériau synthétique renforcé par des fibres naturelles, pièce en un matériau synthétique renforcé par des fibres naturelles, granulat en un matériau synthétique renforcé par des fibres naturelles, procédé pour la fabrication d'un matériau synthétique renforcé par des fibres naturelles

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000071790A1 (fr) * 1999-05-25 2000-11-30 Bki Holding Corporation Materiau fibreux multifonctions avec scellement ameliore des bords
WO2007041168A2 (fr) * 2005-09-30 2007-04-12 Pq Holding, Inc Composites bois-polymere-zeolithe
WO2007107527A1 (fr) * 2006-03-22 2007-09-27 Concert Gmbh Matiere thermoplastique renforcee par des fibres
WO2012019578A2 (fr) * 2010-05-26 2012-02-16 Kerapor Gmbh Mélange de substances ignifuge
WO2015193534A1 (fr) * 2014-06-18 2015-12-23 Upm-Kymmene Corporation Procédé d'obtention de composite comprenant un agent de transformation par dessiccation et composites associés
WO2015193533A1 (fr) * 2014-06-18 2015-12-23 Upm-Kymmene Corporation Procédé pour fournir un composite comprenant un agent de processus de dessiccation et composites associés

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000071790A1 (fr) * 1999-05-25 2000-11-30 Bki Holding Corporation Materiau fibreux multifonctions avec scellement ameliore des bords
WO2007041168A2 (fr) * 2005-09-30 2007-04-12 Pq Holding, Inc Composites bois-polymere-zeolithe
WO2007107527A1 (fr) * 2006-03-22 2007-09-27 Concert Gmbh Matiere thermoplastique renforcee par des fibres
WO2012019578A2 (fr) * 2010-05-26 2012-02-16 Kerapor Gmbh Mélange de substances ignifuge
WO2015193534A1 (fr) * 2014-06-18 2015-12-23 Upm-Kymmene Corporation Procédé d'obtention de composite comprenant un agent de transformation par dessiccation et composites associés
WO2015193533A1 (fr) * 2014-06-18 2015-12-23 Upm-Kymmene Corporation Procédé pour fournir un composite comprenant un agent de processus de dessiccation et composites associés

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ALPEREN KAYMAKCI ET AL: "Physical, mechanical and thermal properties of wood/zeolite/plastic hybrid composites", MADERAS. CIENCIA Y TECNOLOGÍA, vol. 19, no. 3, 30 March 2017 (2017-03-30), pages 339 - 348, XP055517953, DOI: 10.4067/S0718-221X2017005000029 *

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