HUE030917T2 - Wood composite material with aerogels and corresponding production method and use - Google Patents

Description

WOOD COMPOSITE MATERIAL WITH AEROGELS AND CORRESPONDING- pROpm γιον mm ho*> \m> rsp

The present mvemion ida.ee 10 a ν..-od compose m.neru i accord mg to the pre.urohs also relates to a method for producing a wood <.onipoiii:

Lasti^lM myenlfen relates to uses of aerogels in a wood based material panel ACPWphdf^v^iiilMpske material is known for example írom EP 2 281 961 AT A wood composite material within the context of the present invention is understood to mean a composite material winch consists pmiommmtUv ot wood materiül i e. i.s produced to an extent ot more than SO % from wood rnamnal. The rest of the composite material (less them 50 %) is ddierent material. Wood composite materials can comprise, tor example, at least one wood b^iedllPBldlldl pidlld#''pIiSl0dliiat;lfest;öi# chipboard, fibsehoard and/or GSR hoard (DSR ~ oriented strand board, that is to say a board with oriented strands, i.e. special chips). Examples of wood composite .materials also include WPC composite materials (WPC - wood plastic composites), cement-bonded chipboard panels., or the like.

WodÉmaMtlal is dniebstdod to mean any form of wood, i.e. both solid wood (me comminuted wood) or comminuted wood sis well as fresh 'wood or wend that has been obtained from recycling (recycled wood). Comminuted wood comprises, in addition to planks and veneers, also small elements., such as wood chips, wood strands, wood fibres, wood wool and wood door, Wood chips are understood in the present case to mean particles of a maximum siae (length) of just a few millimetres, for example of at most 10 to 20 mm. Wood chips are used for example in the production of chipboard panels. A distinction must he made from wood strands, which are elongate ami relatively large wood particles. Wood strands generally have a length of from 100 to 200 mm and can be up;to 1^0 mil think. Wood strandi are lsed Rif the production of OSÜ boards. A further wood producithatls to therefrom is wood wool, which is constituted by what are known os 8h§iibhip* Wood Wool is generally used as packing cushioning or as insulation arabrfla!,wherein The fibre chips cap hu pp to 500 mi long. Laspy,ovpo|; fibres are known for the production of what are known as flbrehoard panels. Wood fibres are elongit^lkially arranged Wood colls. Which ati-nstmlly bhWInoi fronrstoail pieces of wood, such as chips, by evaporation,. boiling and ohomical pr pochardcal prealdog opop (dobbradop of the wood). Hlgh-densuy fihrehoardy (HDF boards), medium-density fihrebohris (MBh boards) or lightweight íduhhuards [l,OF boards or low density flbrehoard) are produced as a result, by way of example.

Aerogel are highly porous solid bodies io which up to 99,98 M of the volume consists of pores, There are various types of aerogels, those with a silicate base being the most wuiespvead. Other materials, for example with a plastics or carhop base, are used in specific chsOs, in principle, auyiPetahOside, polymor, and other mifOPiilo dan ho used ás a starting base for aerogei synthesis by means of a sol-gel process. Aerogels have a highly dendritic strmtute,ie. a branching of particle chains with-W^^l^hippiÉt the form of open pores. rhesiithhiilhavecontadt:pölii^:IöÉÍhÍite#máge.'ófa stable,: spongy npfwork is ultimately provided. The aggregates thereof have a fractal dimension, i.e. are self-similar to a certain extent. The pore siao lies in the nanometre range and the inner surfaces cun he extremely large with up to MHK) m2 per gram. A«roge!s con:thui be used, inter alia, as insulation or filter nnderiah^addttiot^tt hiologiceiiv actn c ;nnh\ m-w, ptvvms *>r e\ eu eutue colls The fields of use of aerogels wii hi conv í o car N a dor x, t o Jtwovt \ oi nr?*her properties, Aerogels no!a 15 records in the Guinness Book of Records for material properties, including %gs| msuiafor" and ''lightest solid material” or solid material with the lowest 'deriSlly. Since sHwove aerogels in particular have been relatively well researched In their various forms, rather accurate details can be given for their spectrum. These proplfllp qualitatively and for the most pact also quantitatively equate those of the other aerogels, but with specific, inherent characteristics in part. The enact material properties depend on the desired use and can therefore differ quite significantly from one another, depending on the starting material mid production process. The high optica) tiansparenev mgcthvi noth noii\<t too index m apptoxunatetv 1 d{P p ' < * s<la typical value of I 02; makes aerogels interesting from an optical viewpoint, as week A silicate aerogel appears milky-blue against a dark background because the silicon dioxide scatters the shorter wavelengths (i.t\ theblue ronfeOifhfl bfwilteli|ht| &amp; a greater exten t thin tie longer-· wave radiation.

This effect can also he observed in the form of Rayleigh scattering In daylight m the óéul· Amo-wK e i spite onwt empaiem, |\va a*' * oi ip h I mol piaÉle foam. Due to tl#pop£j^*.Éi$p&amp;rs matt to transpambt|soi lntipsbn the right) and therefore is álsereferted to as “Imrén smoko*' or ’’blnesmhkeh The nmhe silica aerogel relates here, however, to the structure and logs to the chemical : composition of the material; The latter corresponds for example to StÖ{OI!)v(ÖRh. with -* mi. \ ^ s 'im A a" e p'm i tr i s \ κ mm ur h tt p: / /d e, wi k t ped i a. erg/ w I k I / Ae rege I). in accordance with DE 197 02 240 Al, aerogels, in particular those that have porosities of more than 60 % and densities be|pw-Oi0 rrapskweuhof

OptfUf dependfbg on the production method and have an extremely low thermal cppiuctlvityvThgy are;:therefore used fer iiilöpÉ liléit Werial, as described for ekampiefo ERuA-d 171 72Ά Aerogelslh the

of “gel with air as dispersant", are produced by drying a suitable gel The term “aerogel" ifl this fff^ejlhíáiieircigels in the narrow sense, he, xerogeis and cryogels. Here, a dried gel is referred fi ns an aerogel in tie narrower sense when 111 lipuli of the gel is removed to the greatest possible extern at temperatures above the critical temperature and starting from pressures above the critical pressure I E if contrast, the liquid of the gel Is removed sub-critically, for example with formation of a liquid-vapour boundary phase, the resultant gel is also referred to in many cases as a aerogel 1¾ of the term 'aerogels' in the present application relates to aerogels in the broader sense, Le. in the loose of “gel with pr as dlipersantA

Idthib the sense of the present foviitfon, aerepls are all those as described above. ΟΒ ί*7 02 240 A1 describes multi-layer composite materials, wherein at®psf-onp layer

ί,-t > o' ts ' 0¾ >gc sa'Vvte >>c v .2vK05K'i'vtl"ii >0,0 00 » ^ M 5 W «λ o i at ! Vteo *! t .ii < i. >M usi nou! d « int^ <twnds i ul ore" s*. *r wOt 1 > very finely abraded wood having a particle sise of less than &amp;y|.^jp!|^^pfe3^re<l to as vvovti Oast), The aerogeb' are used to create a heat'insulating corr^oswe material which can be produced os easily as possible and in any shape and srce, EP 2 28! 961 At describes materials in winch aerogels are added in the term of particles to form a fihröus:4nMérlÍl'^efibrous material can also be wood wool An insulating material is also produced Iti this way. The produced panels are vthat are known as wood wool lighttight cöh»«tiin'boards (see http:/^de.w\kipedia.org/wiki/holxwelle·' lek'hthaupiutte), wherein these differ from chipboards, OSB boards and fibreboards primarily in terms of the geometry of the used wood particles f wood wool). The used binders are also different Formaldehyde-based binders or those based on PM01 (polymeric diphenyimethane dhsocyonate) are used Ih tbeease dí chmboMls, ÖSII boards and fibrehoards, whereas wood wool boards are minorally bonded. No details with regard fotbe binders used are provided in EP 2 Hi % I A1 for the wood-wool-bised layers, and the mentioned bidders relate ekeldsively td " > ό a n párán· mow? a I layer, A wide range of differing aiiiwes -anil·^eoatlbg Matirlila arc known tent the prior art for improving the fire retardant, properties of chipboards, OSB boards and fibreboards, including with auxiliaries and addltiyesi WMt are known as flame retardants are used in many cases for this purpose. Flame retardants (or lire retardants) are materials that limit, slow down, or prevent the spread of fires (sMhtfp;//de.wikipedla.org/wiki/nammschytainitti||, Tile known fianw retardants are predominantly harmful to health or ecologically barmiul or are unsufisfactorv m terms ns their wrx ac\ bonn- of I-e w additives also have,. si rang colouring capability, such that, system parts art* exposed m heavy soiling, which increases the maintenance uteri disadvantageous^, partic^^y'w^tÍ5WfÍ#®plltofi fire Is of considerable 1?«parlance m the construction of toll buildings, 0¾ int «not fittings, and also with the use w \\ ood based materials in v eh ode eo n s tru cfl 0 re fni the; basis, an obiét t oi lire present mvr idem is to improve the ín e-tetai darn' properties of wood based materials.

The problem deduced and presented above is achieved in accordance with a first U < Inga 'hepo&amp;i. , n mtv" m i 0 urn *. atuwxi '"a "'ahn'iijm r«.\ claim 1.

Because aerogels are used for the first time in accordance with the invention in 3 wood based rnifeflil fermei fffnn a wood material in the form of compressed wood chips, strands and/or fibres, specifically either within the compressed wood mate* uú and/of In a re par. ire roaring on the comps C'-seu wood mats >1 h. wldrh will la explainers m greater detail further below, a new material (wood composite material) is created, of which the beat conduct win. is heavily rednred Tln.s Is ,wb ,wwgw>w> m parheulm m tne case oil BF muaK smce chose are used m a widespread manner tor insulation i!pitipdSistl^#:ir€^beMfdaht:p0.pertles of wood bused materials are also sigibiimncly improved fn this way,

The term ' compressed'9 means., hire, that a pressed part, ior example what Is known as a clipboard with *we oi pmdommm'tK wood chips an OSH mmrd wills use of predominantly wood strands, or a librehoard with use of predominantly wood fibres, preferably an LDP hoard, is produced hi a press from a plurality ofwood chips, strands or iihre- agglomerated to form what is known as a cake It should be mentioned that, both in the case that said pressed part has aerogels m its interior ind m pressed part is provided with a coating comprising aerogels, the pressed part is a wood based material body, In particular a wood based material panel, which in the latter case is coated,

The wood materia! used in accordance with the invention can contain, in addition to the V Hid 'Mg'S wk m i uf O ts J-'OiN«· ' w * JU'> M * e Ih r >h0 u H\ O'- •way «sample m the introductory paragraphs, or also cellulose material. ' he wood material Is preternbly bonded by addition of a hinder. However, this is not absolutely necessarv In particular, the previously mentioned tormaidehydo'ba^ed binders or the* innom'0' Intsed on PM01 are used as hinder.

Vartous embodiments of the wood composite material body according to the invention will non "vdobnod hete η.,,όοι

In accordance with a furtherembpltiwnt, It is pcntdlid that the aerogels ire distributed, in particular uniformly, in the wood material. Here, the proportion of <>*' *bh'h i n< O'; reuse or nmm r tow oMs the surface of the wood c o to pool to m a to rial or wood based material, in accordance with one embodiment, it is provided that the aerogels are incorporated.^·' a separate layer (matrix) which is applied to (laminated on) the wood material, in. particular to a shaped product produced from the wood material by compression, and which in particular is free from wood particles, wherein the wood material or the shaped product, is in particular free front aerogels, in the separate layer or matrix, the; aerogels can also be connected to one ,mother by a binder. The binder cast be the same binder as in the wood material nr shaped product. It should again be mentioned that a shaped product in Which a sepai ate layer comprtsmg aerogels bus been applied is also ror -: vie red to he a wtw>h based maU-rnu in pas 0- oi tr a n < md Imm d maten.-d panel, specifically a coated wood based material. The wood based material nr wood composite material according to the invention can also be provided on both sides with a separate aerogel-contvdning Layer of this typo in .»'1,»J ιη· ι V' η; i r dier - o' cctmvuí f ' .- ,n feed ihat the ttnefeows m rite sebdrate Lver containing toe aeiogcds is smaller then the thickness of rite eompiesxed in accordance with the invention it is ps oviued that, the proportion of aerogels in the 0 9w , v wl ' i n hew pt mommy ina nmet mtvw.n < ami 30 vol. %, particularly preferably m a range between 1 and 20 vol 9¾

Further, provision is made in accordance with the invention so that the wood materialot the wood composite material consists to an extent of more than 50 vol % preterlhlf; onnre than 75 voi.%, particularly preferably more than 90 vol %, of wood chips» wherein more than 50 %, preferably more than 75 %, parUcularly:prtfcflbly:htört'thlh 00 . ot the wood chip,' kav e a length of loss than 50 mm» preferably a length so a range from I to 20 mm, particularly preferably a length in a range from 1 to 10 mm. In accordance with a further embodiment it is provided that the wood material of the wood composite material consists to an extent of more than 59 vol %, preferably more than 75 vol. %, particularly preferably more than 90 vol %,of wood chips, wherein in particular more than 50 %, preferably more than 75 %, particularly preferably more than 90 %, of the wood chips have a width of less that; 10 mm, preferably of less than 5 mm, particularly preferably of less than 2 mm# and/or a thickness of less thin4.5 thny preferably ofless than :L0 rnm, particularly preferably of less than 8,5 mm

Additionally or alternatively, pi «vision is made in accordance with the invention so that the wood mm or no the wood vomposiU matonai consists to on extent of menthan ~0 vol. %, preferably more than 75 vol. %, particularly preferably more than 90 vol. %. of wood strands, wherein more than 50 %. preferably more than 75 %, particularly preferably more than 90 %, of the weed strands have a width of more than 4,5 map particularly preferably a width in a range from 5 to 60 mm. particularly preferably a wnith tn a range from 10 to 50 mm. In accordance with, a further embodiment, it is provided that the wood mater ial of the wood composite material consists to an extent of more than 50 vol fee prvferahiy otoie than 75 vol, :,, parin uhu !v preferably more dian 90 vől %-of wood strands, wherein In particular more? than SO %, preferably more then 11¾ particularly preferablytnore than 90 %. of the wood strands have a length tn a imngeírom 10 to 300 mm, preferably in a range from 90 to 250 mm, particularly "preferably liülAkknt'S^lÉmore than 05 milt ipfeferably a range from fehtd IS mm. I s n a ramoxs t do ueitwr v m n *m w ennie ,ktmnooahv or alternatively so that the wood material of the wood composite material consists to an patent of mpre thap SQ voL%, preferably more than 7S voi %, particularly preferably more than 90 vei. 'U ef wood fibres.

In accordance with a iorther embodiment, it >s provided Itat the wiog**?Mln fee compressed wood material, be. in the pressed part, and/or in the separate layer) are present hi the form of granulate, wherein the mept grain site of the aerogels in the Webet composite material lies in a range from 0,3 to j ii, preferably In a range ffotn0J to 25 mm, particularly preferably In a range from 0.8 to 1,8 density hen in a range from 0.0b 1 to 0.6 g/cuvh preferably In a range from 0 01 to 0,3 g/crrrh particularly preferably in a range from 0,05 to 0.1 g/enrh In the case that the aerogels are part of the wood based material or wood composite material tn a separate' layer., the separate layer can have a thickness that is at least as large as the largest grain

In the separate fayei\ 10 by way of example, a granulate of aerogels of which the graib sliildistrihettPh ranges from 0,3 to 4 mm Is present In the separate; layer, ftp thiglness gf the separate layer Is preferably at least4 mm. If by way ofelampfe, a grantnafels used in which the magimpm grain slxe of the aerogels is 2 mm, the tbiifenhSs of the separate layer dan thnstbe atlelst 2 sti, lowever, other «kcs^lsc<< inn μ !Wi(k't\s vp, mm xxotiirdu^ *. ir , · range from 1 to 20 nun., pwkmnb, ma tango fűm? 1 to ID mm, pmUcmarly pnUetahlv In a range from 2 to 8 mm.

In accordance with yet. a further embodiment, it is provided that the proportion of the wood maters d m the fen m η! v\ nod i mps, κι m.ls and m ;*bt e\ p t the m op.\tj - m the wood material that is present in the wood composite materia! m the toms of wood chips, strands and/or fibres) is at least 5m % nod preferably lies in a range horn SO to 80 voi °o, jurrVnl.n K pnwi.ev, m i ramy iron up to ">Hol v,0 (up mi ip o other tseon material can also he provided in the wood composite material., hut then is not included in the aforementioned proportion.

Lastly,, in accordance with yet. a further embodiment, it is provided that the wood: material ol the wood composite material consists to an extent of more than SCf vid> %, preferably more than ?S vnl. %, particularly preferably more than 90 voi. % Of wood particles selected from the group containing wood chips, wood strands and ympd §fete&amp; In other words, various types of wood partidMáfotietSiüfteté! gröúp §ü ifeb occur or be present at the same tithe In the wobdcbmphiitbM Invention. It Is thus conceivable that the wood material in the wood composite material Is formed both by wood chips and wood strands and/or wood fibres, or both by wood strands and wood fibres. ÁÜ three specified types of wood petioles, spoelitcally woodi chips,:;wood strands and wood fibres, can also occur simultaneously in the wood materia! nr can form the wood material. 11 various wood particle types from the previously mentioned ifpup are provided, they can ho provided as a mixture and/or in separate lovers. Ibis means that, by way of example if both wood clops and wnod strands are provided, at least one layer of the wood composite material can comprises mixture of wood chips and wood strands K\hc! cin other yvpm' w wm>d ourtoles addit-oreo y also can w* vmu nne-l m the m,\?.no). Adod"*?!. Ή m ihcrn itn eK,howmer. a is also con, awafne that in the case that the wood composite material comprises both wood chips and wood strands, at least one layerdbit not comprise any wood chips or wood strands, drfhat at least one layer does not comprise any wood clips and another layer does not comprise any wood strands, if, by way of example, both wood chips and wood fibres are provided, at least one layer of the wood composite material can comprise a mixture of wood chips and wood fibres (wherein other tppes of wood particles cart additionally also ne contained Ire the mixture). Additionally or alfirnailvefy, however, it la ilsd oonoeivahie thaUn tie ease in which the wood composite material comprises both wood chips and wood fibres, at least one layer does not comprise any wood chips or any wood fibres* or that at least-one layer does not comprise any wood chips and another layer does pot comprise any wood fibres, if, by way of example, bot h wood strands and wood fibres are provided., at least one layer of the wood composde material can comprise a mixture of wood strands anti wood no? ? s ;wln wm mht> n pcs at wood particle' t an a?id'tu>?ndiy ahv he

Additionally or:altnrnativelyi.hpwever, it is also cpncelyalfe that, in the case in which the wood composite material comprises both wood strands and wood fibres, at least one layer does not comprise any wood strands or any wood ibre% or atiiastpne layer does not comprisbany v®pdístran|iand annflor layer dpis; not cptpprise ppy wood fibres.

That said in the above paragraphs with regard to the composition of the wood material v oes '*h:s>v,í *K t, n \' esorwv. o w> i.h^wmd' ? wove w» m*K vs? Ό" wood fibres, other types of wpod material are also provided in the wood composite material, for comnipie the types of wood material mentioned in the introduction of the description, such as wood wool, wood flour, etc.

The previously defined wood composite material can also have an additional coating, winch is either directly applied or is connected thereto by means of an adhesive. A un w-4 <'P| m u is a c m ho \ρ>* Λ t ouVty - 'p?u f he i ea N > o* an adhesive is a film, for example.

Aw d < n rynw n nut?. Ί as h* m e am n \? > he <'d to? oxwa oh vipt.t t a sandwich panel, for example as a cover layer of the sandwich panel

The previously presented and described problem is solved In accordance with a second teaching of the present invention by a method having the lectures of claim .10, Here, the aerogels form the wood composite material together with the wood material

Various embodiments of the method according ίο the invention will now be defined hereinafter; nifmitoedhuco with one embodiment ins provide*; tin; t v ie og* l·' ire to d hlendedih h iraletip with the (as yet uncompressed) wood material and option,illy a binder to mrm a mixture, then, in a second step,thf mixture is scattered onto a carrier, and tkefh ;n a third step, the (still uncompressed) material Tim earner can be a conveyor belt, for example, sn arcus dam v w »te o ;erilw r «. mbudmn m d \ pi m dod , , d t e t an , is scattered v, d' a pHh'ailfy br layers with (asipt uoeonsf reaped;) wood materia! prior to the compression, at least one of said layers containing aerogels, fin layer containing the aerogels can be at the bottom, at the top, or in the middle. A plurality of layers containing aerogels can also be provided, which can be adjacent to one aftpfliif or asOrnedt ow no r .'"do? mihehwi. >.nn\*fu« hoe it? accordance with a further embodiment it. is provided that the wood material is p'dyidedas d dhaped product, in particular a shaped product In the form of a panel, sormed of compressed wood chips, strands and/or fibres, and the aerogels are applied td dammated on) the soaped product as i separate layer (matrix) in which they are ihmrprated; wherein lie shaped product (s In parlchlatfltme tarn aerpge!|clh: principle, however, shaped aerogels.

In aecordaoeewitha further embodiment it is provided that the (as yet yncompressed) weed,step, onto a earner, in particular without addition of aerogels (wherein, however, the addition of aerogels is also conceivable), and the irosci, ο *a a* ic ig*w if i, m , \ a \ >pai, ,* hwt ·' ed , tNn are i sicorporated/ to the: ||ti 1 ; dfsposgd; ondhg farrieh *'t a*vm3' » í wu"1 , Hnhn «'nbomr'ent n s«; m > vi tdato e.s Ov'".5' e\ * comprising (as yet uncompressed] wood materia! Is/are scattered onto the earner prior *ί\,!!ΊΛΛ*!\ ϊ'o \ one uO'f.r \Oi vOUw e* yeK ί,Ί vt on * dm aerogels ran be at the bottom, ,.n the tap, or in the middle A plurality of layers containing aerogels can also be provided, winch con be adjaceotSb one another or tins tan con trom one another in the layer construction, in ,u\ ο? dam e v, tth ,> tus then emboibntent, it ss provided that the compression is «.art mb out nt a double bek press or calender press. The average pressure during compression can itikra rinp ΙΤΟπτΤ to SO kg/em2, preferably in a range from 5 to SO kg/cm2, rangé bt írom 10 to AOilg^ein^i llhe fvoipge pressing temperature during compression can lie in a range from 100to 300 ki, preferably in a rangf from lSO ° to 250 % pirieuiarly preferab|y;iftgm^lfedri^P től&amp;ö:^ ttet&amp;flt ^yeruge^pelitóe-and' llveéage** pressing temperature nteans the pressure averages! over the length of the pressing device ami, respectively, the pressing temperature averaged over the length of the pressing device. The pressing speed (press factor) cau lie ii p ráftgé#dln 1 to 20 s/jnÉÉ%;pi&amp;^ s/rane particularly preferably in a range from 35 to 10 s/mrn (note: because the pressing s,,n 0 η- ,1, po:td, rt on du p, ή , m ”n " \ r. lew * 1 or do .,rd n, expressed bs u har ts known as the press factor nt seconds per 55no panel thickness s/mrn).

Thus present invention also relates to the use of aerogels m fie. internally or as a cover layer) a wood based material pastel, in particular chipboard or an OSB hoard or fihroboard, in particular m a wood composite material as previously defined, to improve tlie fire resistance.

Lastly, the invention also relates to the use oi aerogels in (i,e, internally or as a cover layer) a nved based materia οαπΛ m par? mbit chipboard, an OSH Iwid, or ilbrehoard. preferably an LÖF board, in particular in a wood composite materia! as previously defined, to reduce fie heat transfer.

There are now a of possibilities tor embodying and developing the wood; composite materia! according to the invention and the method according to the invention, Reference is made m this regard on the one hand|t0:f|e€|sf^#p8pwi»g Claim 1. and on the other hand r.o the description of exemplary embodiments: in conjunction with the drawings. In the drawings:: shows t th'Ni vceoyTo \ mnhodmn m o*'a protbuuon uonhobmxofdmgto the inyeniót|: rig. lb) shows a second exemplary embodiment of a production nmthnd acedrditnl; to the invention, I'd'p 2a) shows a third exemplary embodiment of a production method according to the invention, and 1% 2b) chows a fourth exemplary embodiment of a production method according to the invent)Phi

In ah methods which are illustrated in Figures la), lb),,2a) amf

Material 1 (a wood based material panel) is produced which <:oth^risdií#ötA^tóihÍ;l' fe the form of wood chips, strands and/or fibres as well as aerogels 4.

The individual production methods differ in principle from one another, inter aha, as fellows, fe accordance with Fig, la), it is provided that the aerogels 4 are firstly blended in a first ;>tep with the wood materied 2 to form a mixture S, then the mixture 5 w scattered onto a warier 6 in a second step, and in a third step the materia! 7 disposed on the carrier ό is feen compressed.

In Fig. Is)} 5¾ plurality of layers 7.1, 7.2 and 7.2 are scattered onto the carrier 6 prior to $M? compression;me lower layer 7,1 'and'theupper layer 7.3 comprising aerogels 4. The middle layer 7.2 is free from aerogels la the production method according to Fig, 2ag It Is prodded that the wood material 2 os provided as a shaped product. .3 In the form of a panel formed of compressed wood chips, strands and/or fibres, and the aerogels 4 are applied to the shaped product 3 as a separate layer 1.1 in which they are Incorporated,, wherein the shaped product 3 -s m particular free from aerogels 4. Heap the thickness d of the separate layer 1.1 Is lees than the thickness 0 of the wood material 2.

Lastly, provision Is made in the embodiment in Fig, 21.)} so that the wood matenal 2 is firstly scattered onto a carrier 6 to a first step, In particular without addition of aerogels 4, and the aerogels 4 are then applied In a second step as a separate layer 1,1, In winch they arts incor porated, to the material 7 disposed on the carrier 6, Here too, the thickness d of the separate layer 1.! Is less than the thickness L) of the wood material 2.

In the exemplary embodiments in figures la), lb} and 2b), a doable belt press is provided as pressing device R Alternatively, a cokíndur press can also be used. In the exemplary embodiment In Fig, 2a) the shaped product. 3 has been produced in a comparable way, but this Is not shown here. The show?) roller 9 In Fig 2a) does not serve us part of a pressing device, but. serves merely to press cm (laminate on) the separate layer 1,1. lire tfOMmoniioned separate layer t I w a matrix, for example In the. form of a plastics fdm or mat, in which aerogels are embedded in the form of granulate.

Claims (1)

1 0 * 0 / η WV'U U 1Kihn ΓΗ ** 'ΥΛΙΪΓ ΐη * K'S £ $ USEFUL. ag ti; níi '> under 5 kämag the tree oakunoony! horseradish erK &amp; ala's! a la kooowtt -. - · i> a, <»sn mee * · aianx, yA hard bb mso 'AeHogat is characterized by * leaves the wood (2i / shredded wood chips and wood and / or wood) wood hook material (1) wood {2} more than 50 vol% * sit au af n. a.avook o sv to * hivh took οι ni a A n n '' '".aí'k.Í' k" o on s' * this is> 0 atm ι v v v e me e me oes oes k k k k k am am eh eh eh eh eh eh im im 0 A A esség esség esség esség esség esség esség esség esség esség esség esség esség esség esség 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 vagy vagy .it material (I), which contains the following elements: 4) the taanvugbao (2i aliases); ftsnyagra (2), where fmmAg t:> royal alton meok "- azrokAekio! Ay where at ruglehet At tamlW-s separate layer f 1.10 thickness (d) smaller, mini aipfcsl! (2) or donitfst (3 ) thickness (D) of wood composite material according to any one of the preceding claims. mezim that aetvgébh> 4t army a a and Compos »amugbao> 0 tt and attat%, preferably 1 and 20 volumes' 0? is between. 41 Wood Contour Material (!) According to any of the eUxulator Claims. nz / ai tribute t oetgaiNuhAA 'o N <V «. preferably between 51 and 20 mm, preferably between -20 mm, particularly preferred between 1 and 100 mm. A wood knotted material according to any one of the preceding claims, characterized in that it is 75% of the fiber chips. preferably 90% of the latter has a width of 4J preferably of 5-60 mm. particularly preferred is 10'50 .mm utilities. AA is one of the etoso verbs} .sammi tree koinpoz.it material (I κ a ** aii; jelieme / se, lmg o tree kv a - ma, ms a »<foam am * '> A m man' χ m *! - '<ο a. °>, more omit up mobon' Vban iatotgvH ΦοΙ v '- AhagamokN'I. os> wood fiber 7.5 Λζ # I§ «# claims Iwmdytke characterized by: 1¾ compy onyog, or »Ρ · ^ Ι characterized by» aerogels (4) granular in Ibrind, stitched present, so that perpendiculars kos5pes iph- estidhe? th a tree toq ^ tt'anyagbiTCii) # # 0,4:? ???????????????????????????????????????????????????????????????\T * 4 3 YOUTH DIMENSIONAL DIMENSIONS up to 0.05Ό.1 g / em3. §1] &amp;%. tooth 51%, preferably 50 to 80% vol. 9J Wood contagious material according to any one of the preceding claims: fj)> Characterized by the fact that (k composite material Π) is wood (2)? > 0 volume - vba? * Preferably more than 75% by volume? most preferably more than 90 volumes of mini? % -hue to hue the "mnohs of the rules" selected from the port containing "Oö'Xgaeív? s .ml chips" "10." Composition according to any one of the preceding Claims. to make a fake shot, where the fonts under the tree are, for example, si'U '- ο', ο,, x-nx,, kot (41 lmon worms). \ t 5 es%> _n are taught and the “orogek, d ar.msat oxs. A process comprising the step (4) of mixing the slip (2) in the first step (5) and the second step the keu-uhet no «ok py hordezora pb? '- ·,.> Arm «.» 09 beme · π on the substrate ¢ 6: - brake, here mongolian (7? Oldsprexel, where especially the ayou ov i '1 2.? iVx coin mc' ean O e ', layers at least one aerogels, eg contain 12.) * 0? go ?? k> va. - 'and'>! .. m with sindemezvo that fanny ag t. :) n? mt ídomifestkéaf: (3 ). for the most part I love to write about my life & sn! from crushed wood chips, fiber chips made from intestine or wood, this is the .ten word «4? Mlön as a layer (1.1.1 in bound horseradish - I want to make a metal band of myth (3). That is: ulnnttsi t "'ox rte .tenxxxd -?»> »4 * 15.) The smmsfs of the 91 claim. Characterized by the mountain of the Léuuvgo .3? principle step aerogellers 14) without the help of a hoe (6), maid a second k-pé'-bets to the 164 material applied as a 171 exterior layer? {4} * in which they came in, the thing is that the substrate (6) is the one or more layers! Pkteno compresses..headerbreaking nAgseortes with Jaaeyag (¾¾ layers of moths: legallbh is a bent (4) tefttUüaz, 1: 4,} Aerogel &amp; k (4) presses on wood in the woods A to 1-4, in the case of Mrteöiyrke thousands of others, find out more about Mbrges - and - OSB ^ la | pkbaa, .a <t ^ # lé ^ g # ia.k -pvM ^ §m, 11;) Nurses (4) pressed: in the bed prodi #, m IHk yegp: hératelylke saeHgb superfamily Milftpösep iMosdegteeek, lelM &amp; sky SE.pt LDFHaps n, to reduce thoughts