EP3248660B1 - Couche de pcm proche de la semelle de glisse dans la structure composite d'une planche de glisse (ski) - Google Patents

Couche de pcm proche de la semelle de glisse dans la structure composite d'une planche de glisse (ski) Download PDF

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Publication number
EP3248660B1
EP3248660B1 EP17171561.8A EP17171561A EP3248660B1 EP 3248660 B1 EP3248660 B1 EP 3248660B1 EP 17171561 A EP17171561 A EP 17171561A EP 3248660 B1 EP3248660 B1 EP 3248660B1
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EP
European Patent Office
Prior art keywords
layer
heat
pcm
sliding board
board according
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EP17171561.8A
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German (de)
English (en)
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EP3248660A1 (fr
Inventor
Benjamin Redlingshöfer
Martin GEIßENHÖNER
Sabine Riede
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Smartpolymer GmbH
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Smartpolymer GmbH
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/12—Making thereof; Selection of particular materials
    • A63C5/126—Structure of the core
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/04—Structure of the surface thereof
    • A63C5/056—Materials for the running sole

Definitions

  • the invention relates to a heat-regulating layer in the composite structure of a sliding board (ski, snowboard).
  • This heat-regulating layer is disposed between the lower scale layer and the upper layer (s).
  • the object of the invention is to control the temperature of the running surface of the surfacing layer and thus to improve the sliding properties and reduce material wear.
  • This goal is achieved by integrating phase change materials and thermal conductivity additives into the thermal control layer.
  • the melting temperature of the phase change material is in a range between 0 ° C and + 85 ° C.
  • both the high thermal conductivity additive and the one or more phase change materials are distributed differently over the area of the thermal control layer.
  • the sliding action between the ski tread and the snow is a complex process.
  • the aim of the invention is the regulation of the temperature of the running surface of the coating layer.
  • EP 538 185 is a sintered PE ski coating described which contains additives with increased thermal conductivity and additional additives to improve the sliding properties, which have a melting temperature in the range between -20 ° C and +10 ° C.
  • a disadvantage of this solution is that the additives adhere to the tread surface and are removed by the friction on the snow crystals during use.
  • the invention has for its object to regulate the temperature of the running surface so that on the one hand at high snow temperatures (eg from 0 to -8 ° C) achieved a good thermal conductivity and, accordingly, the "suction effect" is avoided, and on the other hand especially in the starting phase and in medium-cold snow conditions (about -8 ° C to -20 ° C) the desired generation of a water film is ensured in this area. Also, at high temperatures on the running surface and at the edges, which results from the friction on the snow crystals, a large part of this heat is carried away and in particular at the edges damage to the material can be prevented. In addition, this effect should be guaranteed even after prolonged use. Additives must be incorporated in such a way that the mechanical function of the ski is maintained. According to the invention, this object is achieved primarily according to the characterizing part of the patent claims.
  • the composite structure comprises one or more upper layers (1), the heat regulation layer (2) containing phase change materials and thermal conductivity additives and the covering, ie the running surface (3).
  • the thermoregulation layer (2) is located between pad (3) and the upper layer or layers (1).
  • the heat-regulating layer is therefore a layer close to the running surface.
  • the lining layer (3) is characterized by a high thermal conductivity. This is achieved by the addition of additives with high thermal conductivity or the use of materials with high thermal conductivity. Since the heat-regulating layer also has an increased thermal conductivity, according to the invention the conduction of frictional heat to the surface or from the running surface to the heat-regulating layer (3) is generally improved.
  • phase change material absorbs excess heat from the running surface or edges and transports it through the thermal conductivity additives in that direction.
  • thermal properties of the running surface can be influenced in such a way that they can be adapted practically as desired to the desired properties of a sliding board.
  • the thermal behavior of a sliding board can be influenced by various factors in the context of this invention.
  • phase change materials in the context of this invention are preferably compounds of phase change material in a plastic matrix.
  • encapsulated or supported phase change materials or pure phase change materials in raw form or in pure form are also suitable.
  • PCM for the absorption of "surplus heat" u.a.
  • edge region the use of PCM is advantageous, which have a phase change in the range of +20 to +85 ° C.
  • the PCM contents in the matrix of the PCM-containing heat-regulating layer are between 30 and 85% by weight, based on the weight of this layer.
  • the proportion of the thermal conductivity additives may range from 10 to 40% by weight, based on the weight of the layer. They are contained not only in the PCM-containing heat-regulating layer (3) but also in the running surface or possibly also in layers between the running surface and the heat-regulating layer (3), but in any case located near the running surface.
  • phase change materials can be encapsulated, preferably they are introduced in non-encapsulated form as powders, granules, granules, foils / plates or casting compound. You can may be incorporated directly during the manufacture of the running surface-near layer or subsequently incorporated into pores or channels in the layers, or they are sprinkled onto the surface of the tread or edge-near layer and incorporated into the construction during lamination or compression.
  • Figure 1 shows the schematic structure of a composite structure of a sliding board, divided into an upper layer (1), which may consist of several individual layers, a layer (2) containing the phase change materials (PCM), and a lower layer (3), which is generally formed as a covering and is closed by the sliding surface.
  • the PCM-containing layer (2) is located between the upper layer (1) and the lower layer (3) and is also referred to herein as the heat-regulating layer (2).
  • the PCM-containing layer (2) can also be provided with additional anchor elements which are used to strengthen the composite structure and provide a particularly strong connection between PCM-containing layer (2) and upper (1) and lower (3) layer.
  • the phase change materials can be used in the form of PCM foil inserts (9).
  • PCM film inserts (9) have thicknesses of 1 to 5 mm.
  • the PCM film liners (9) can be made by a thermoplastic processing method such as continuous sheet extrusion, a multi-component film line or a plate press line.
  • the PCM film inserts include PCM materials embedded in a plastic matrix. It may also be composite films, consisting of a cohesive layer structure of upper (4) and lower (6) composite film of polyethylene, polyamide or polypropylene or from a Compound of two or all of these polymer materials or of aluminum and in between the phase change material (5) in the form of a PCM compound, which may be enriched with thermal conductivity additives.
  • Figure 2 shows the construction of such a composite film comprising an upper and lower composite film (4, 6), which may also consist of different materials and the PCM layer (5) between them, which may be enriched with thermal conductivity additives.
  • the PCM film insert (9) can consist of one piece, which extends over a longer area along the sliding board ( Figure 3).
  • Figure 3 shows the structure of a heat control layer (2) with PCM foil inserts (9) in plan view.
  • the PCM foil insert (9) is always surrounded by a transition region (8), which preferably shows a very good thermal conductivity and a solid bond between upper (1) and lower layer (3) and intermediate PCM-containing layer (2) provides.
  • the transition area (8) ensures that there is no direct contact between the PCM foil insert (9) and the edges (7) or the area at the top or at the end of the gliding board.
  • the PCM foil insert (9) may consist of one piece ( Figure 3) or of several individual PCM foil insert pieces (9A, 9B, 9C) of different geometry arranged in the longitudinal ( Figure 4) or transverse ( Figure 5) to the sliding board are.
  • the individual PCM film insert pieces (9A, 9B, 9C) may comprise phase change materials having different melting points A, B or C and / or contain different thermal conductivity additives in different concentrations.
  • the proportion of thermally highly conductive material, in particular of the aluminum powder or of the carbon about 10 wt .-% to 40 wt .-%, both in the lining layer (3) and in the phase change material containing layer (2) and there especially in areas between the lining layer or edge and the Phase change material containing areas are.
  • the PCM-containing layer (2) is formed as a honeycomb structure in which the PCM is distributed in the cavities between the honeycomb walls.
  • different phase change materials can be distributed in a controlled manner over the cavities, for example phase change materials with a higher melting temperature, e.g. 42 ° C or higher, near the edges, while in the other areas, lower melting point PCM, e.g. 5 to 17 ° C, are included.
  • the PCM material can be sprinkled or poured into the honeycombs in powder or granule form.
  • the phase change material may be mixed with thermal conductivity additives.
  • honeycomb walls The purpose of the honeycomb walls is to ensure the mechanical strength of the PCM-containing layer (2) and to provide a firm bond to the upper (1) and lower (3) layers, thus improving the functionality of the entire upper-layer composite structure (1 ), PCM-containing layer (2) and lower or covering layer (3).
  • the honeycomb walls are coated with thermal conductivity materials which may also serve as reinforcing materials at the same time, e.g. Carbon nanotubes, carbon fibers or metal fibers or they themselves have a good thermal conductivity.
  • the PCM-containing layer (2) functions as a textile reinforcing layer, eg a nonwoven fabric or 3D knitted fabric or foam, wherein the pores or voids in the same manner as in the honeycomb structure filled with phase change material.
  • the textile reinforcing material can be used alone or embedded in a plastic matrix, preferably made of thermoplastic polymers, or laminated between upper and lower polymer cover layer.
  • the invention can advantageously be admixed with an admixture of from 30% by weight to 85% by weight, preferably from 45% by weight to 70% by weight, based on the weight of the PCM-containing Heat regulation layer (3), realize.
  • the amounts of phase change materials and the type of phase change materials are not evenly distributed throughout the layer.
  • near the edge phase change materials are concentrated, which have a higher melting range, preferably between 40 and 85 ° C. This is to avoid that the edge material, which is particularly stressed by friction and thus particularly heated, is damaged. This can lead to burns.
  • phase change materials with a higher melting point are hydrocarbon compounds having 16 to 32 carbon atoms and melting points between 20 and 85 ° C; even more C atoms lead to even higher melting points up to 100 ° C.
  • phase change materials with melting points in the range of 0 to 85 ° C are possible, for example salt hydrates or Alloys.
  • the phase change materials are PCM compounds in which the phase change material is embedded in a plastic matrix.
  • phase change materials As is known to the person skilled in the art, the list can be continued by any other phase change materials. Which phase change materials are used, always depends on the type of incorporation and of the support materials for these phase change materials, ie the structure of the layer in which the phase change materials are involved.

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  • Laminated Bodies (AREA)

Claims (12)

  1. Planche de glisse avec des additifs servant à améliorer les propriétés de glisse et élaborée en une structure composite composée de plusieurs couches, dans laquelle la structure composite comprend une couche de thermorégulation (2) et la couche de thermorégulation (2) comprend une matière avec une conductivité thermique élevée et en tant que deuxième additif au moins un matériau à changement de phase (5), dont la température de fusion se situe dans une plage entre 0 °C et +85 °C, caractérisée en ce que la couche de thermorégulation (2) est disposée entre la couche supérieure (1) et la couche de revêtement inférieure (3), et en ce qu'à la fois l'additif avec une conductivité thermique élevée et un ou différents matériaux à changement de phase (5) sont répartis différemment sur la surface de la couche de thermorégulation (2).
  2. Planche de glisse selon la revendication 1, caractérisée en ce que la couche de thermorégulation (2) est formée à partir d'une ou de plusieurs garnitures en film PCM (9), respectivement entourées par une zone de transition (8), et ne jouxte pas directement la zone d'arête (7).
  3. Planche de glisse selon la revendication 2, caractérisée en ce que les garnitures en film PCM (9) contiennent respectivement des matériaux à changement de phase (5) avec des points de fusion identiques ou différents et/ou présentent des géométries différentes et/ou sont réparties différemment sur la surface de la couche de thermorégulation (2).
  4. Planche de glisse selon la revendication 1, caractérisée en ce que la couche de thermorégulation (2) contenant du PCM est réalisée en tant que structure alvéolaire, où le matériau à changement de phase est réparti dans les espaces creux entre des parois alvéolaires et différents matériaux à changement de phase (5) peuvent être répartis de manière contrôlée sur les espaces creux, dans laquelle le matériau PCM peut être dispersé sous une forme de poudre ou de granulés dans les alvéoles ou peut être coulé dans les alvéoles.
  5. Planche de glisse selon la revendication 4, caractérisée en ce que les parois alvéolaires de la structure alvéolaire dans la couche de thermorégulation (2) contenant du PCM sont ajoutées à des matériaux de conductivité thermique, qui peuvent faire office également dans le même temps de matériaux de renforcement ou possèdent même une conductivité thermique satisfaisante.
  6. Planche de glisse selon la revendication 1, caractérisée en ce que la couche de thermorégulation (2) contenant du PCM est élaborée en tant que couche de renforcement textile, dans laquelle les pores ou les espaces creux sont remplis de la même manière que dans le cas de la structure alvéolaire avec du matériau à changement de phase (5).
  7. Planche de glisse selon la revendication 1, caractérisée en ce que le matériau à changement de phase (5) avec des températures de fusion entre 20 à 85 °C est concentré à proximité des arêtes dans la couche de thermorégulation (2).
  8. Planche de glisse selon la revendication 1, caractérisée en ce que différents matériaux à changement de phase (5) avec des points de fusion différents sont contenus dans la couche de thermorégulation (2).
  9. Planche de glisse selon la revendication 1, caractérisée en ce que les additifs de conductivité thermique présentent une fraction de 10 à 40 % en poids, par rapport au poids d'une couche.
  10. Planche de glisse selon la revendication 1, caractérisée en ce que les fractions PCM dans la couche de thermorégulation (2) contenant du PCM sont entre 30 à 85 % en poids, par rapport à ladite couche.
  11. Planche de glisse selon la revendication 1, caractérisée en ce que les additifs de conductivité thermique comprennent des carbones sous la forme de suie, de graphite, de nanotubes en carbone ou de fibres de carbone ou des métaux sous la forme de fibres métalliques ou de poudre métallique, et les matériaux à changement de phase (5) dans la couche de thermorégulation (2) possèdent une température de fusion dans la plage de 0 à 85 °C.
  12. Planche de glisse selon la revendication 1, caractérisée en ce que les matériaux à changement de phase (5) dans la couche de thermorégulation (2) sont des composés organiques choisis parmi le groupe de l'éther de di-n-alkyle, des acides gras, des alcools gras ou des alcanes.
EP17171561.8A 2016-05-23 2017-05-17 Couche de pcm proche de la semelle de glisse dans la structure composite d'une planche de glisse (ski) Active EP3248660B1 (fr)

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DE102016006159 2016-05-23

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EP3248660B1 true EP3248660B1 (fr) 2019-09-11

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019132362A1 (de) * 2019-11-28 2021-06-02 Amplid GmbH Schneegleiter
CN112918043A (zh) * 2021-03-01 2021-06-08 山东尚邦建筑工程有限公司 一种装饰幕墙工程钢结构支撑架

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Publication number Priority date Publication date Assignee Title
US5272199A (en) 1991-10-18 1993-12-21 Ims Kunststoff Ag Ski coating and filler for a coating
WO1999001186A1 (fr) * 1997-06-30 1999-01-14 Dakuga Holding Ltd. Planche pour la glisse sur la neige
DE102012110330B4 (de) * 2012-10-29 2014-07-24 STS Textiles GmbH & Co. KG Textiles Flächengebilde mit einem Latentwärmespeicher
CN107075794B (zh) * 2014-05-19 2020-02-11 智能聚合物有限公司 柔性pcm面料

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