JP2010126994A - Heat insulating waterproof structure and heat insulating and waterproofing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat insulating waterproof structure and a heat insulating and waterproofing method for a structure using a resin foam with excellent heat resistance. <P>SOLUTION: The heat insulating waterproof structure 1 includes a heat insulating material 3 laminated on an underlayer 2 of the structure, a fixing metal member 4 having a heat-fusing agent on a surface exposed on an obverse side of the heat insulating material 3 and fixed to the underlayer 2 by means of anchoring to fix the heat insulating material 3 to the underlayer 2, and a rubber sheet 5 laminated on the heat insulating material 3 and bonded to the fixing metal member 4 by the heat-fusing agent. The heat insulating material 3 is obtained by foaming a resin composition containing a copolymer (A) comprising an aromatic vinyl unit and a vinyl cyanide unit and/or a copolymer (B) comprising the aromatic vinyl unit and a fatty carboxylic acid derivative unit. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a heat insulating waterproof structure and a heat insulating waterproofing construction method applied to an underlying ground of a structure.

  Conventionally, heat insulation and waterproofing in which a heat insulating material and a waterproof layer are laminated in order to provide heat insulation and water resistance in concrete roofs, balconies, verandas, and water tanks (heat storage, water reception, fire prevention tanks, etc.) The structure is applied. For example, a structure in which a heat insulating material and a rubber sheet are fixed to a base of a flat roof of a concrete structure by a fixing member called a disk-shaped fixing bracket (disk) is known (for example, Patent Document 1 to Patent Document 1). 5). As described above, a method of mechanically fixing a heat insulating material or a rubber sheet to a base using a fixing metal is generally referred to as a mechanical fixing method. The mechanical fixing method can fix the heat insulating material without being affected by the state of unevenness or moisture of the base, compared to the bonding method in which the heat insulating material or rubber sheet is attached to the entire surface using an adhesive and fixed. There is a merit that there is little instability in quality due to the skill of the installer, no adhesive is used, or even if it is used, it is limited to the seam of the waterproof sheet and only a small amount is used, so the work environment is good.

  According to the method described in Patent Document 1, a waterproof sheet made of vulcanized rubber in which an insulating sheet and a base fabric are embedded is laid on a foundation such as a concrete structure, a fixing plate is disposed on the waterproof sheet, and the fixing is performed. The waterproof sheet is fixed to the base by passing the fixing material through the fixing plate and the waterproof sheet from the top of the board and driving it into the base. Note that the waterproofing method using the waterproof sheet is generally referred to as sheet waterproofing. In sheet waterproofing, there is a structure in which the waterproof sheet is exposed as a skin, and is generally referred to as an exposure method.

  According to the methods described in Patent Literature 2 to Patent Literature 4, in a state where a fixing plate anchored to a base and a rubber waterproof sheet are overlapped, the fixing plate is heated by electromagnetic induction from above the waterproof sheet. The fixing plate and the waterproof sheet are fused by heating to melt the covering material of the fixing plate. According to the method described in Patent Document 5, the heat insulating material is interposed between the base and the waterproof sheet, and the heat insulating material is fixed to the base with the fixing plate. A structure in which the heat insulating material and the waterproof sheet are laminated on the base in this manner is referred to as a heat insulating waterproof structure. In the heat insulating waterproof structure, polystyrene foam, rigid polyurethane foam, isocyanurate foam, phenol foam, or the like is used as a heat insulating material. In addition, a thermoplastic resin such as polyethylene, polypropylene, or ethylene-vinyl acetate copolymer is used as a covering material that is coated on the fixed plate.

Japanese Patent Laid-Open No. 9-273272 JP 2003-35013 A JP 2003-313994 A JP 2006-124941 A JP 2005-180141 A

  In a heat insulating waterproof structure that employs a mechanical fixing method, when the covering material of the fixing plate and the waterproof sheet are fused by electromagnetic induction heating, the electromagnetic induction heating is applied to the heat insulating material laminated under the waterproof sheet. Heat resistance against heat conduction caused by the above is required. Moreover, in the exposure method, the surface temperature of the waterproof sheet as the epidermis rises to a maximum of about 80 ° C. in the summer, so that the heat insulating material is required to have heat resistance against heat conducted from the waterproof sheet heated by sunlight. The

  Rigid polyurethane foam, which is widely used as a heat insulating material, has a characteristic of excellent heat resistance. Therefore, rigid polyurethane foam is adopted as a heat-resistant high heat insulating material in a mechanical fixing method in which a covering material is heated and melted or in an exposure method in which a waterproof sheet is used as a skin. However, rigid polyurethane foam also has a characteristic of high water absorption (hygroscopicity). Therefore, the heat insulating material may absorb water during storage or after construction. The hard polyurethane foam that has absorbed water has a problem that its heat resistance is extremely deteriorated and thermal deformation such as warping and swelling is likely to occur. In particular, in the mechanical fixing method, since the heat insulating material and the waterproof sheet are so-called point bonding that is bonded only at the position of the fixing plate, for example, when the joint portion of the waterproof sheet is not sufficiently sealed by bonding There is a possibility that rainwater will infiltrate from that part. Further, the rigid polyurethane foam has a disadvantage that it is not recyclable and has a large environmental load at the time of disposal, and that it is more expensive than, for example, polystyrene foam.

  On the other hand, polystyrene foam has high strength, is inexpensive, has recyclability, but has the disadvantage of being inferior in heat resistance. Therefore, in a heat insulating waterproof structure in which a mechanical fixing method with heating or an exposure method with large heating by sunshine is adopted, the heat insulating material made of polystyrene foam sometimes has various problems.

  Under such circumstances, a heat insulating material used for a heat insulating waterproof structure is expected to have both the advantages of polystyrene foam, which is excellent in strength, inexpensive and recyclable, and the advantage of rigid polyurethane foam excellent in heat resistance. Yes.

  This invention is made | formed in view of this situation, and it aims at providing the heat insulation waterproof structure and the heat insulation waterproofing method of the structure using the resin foam excellent in heat resistance.

  As a result of diligent research to solve the above-mentioned problems, the present inventors have found a resin composition that enables a heat insulating waterproof structure that employs a mechanical fixing method with heating and an exposure method with large heating by sunshine, By using a foam formed by foaming the resin composition as a heat insulating material, the heat insulating waterproof structure and the heat insulating waterproof construction method according to the present invention have been completed.

  (1) The heat insulating waterproof structure according to the present invention has a heat insulating material laminated on the base of the structure, and a heat fusion material exposed on the surface side of the heat insulating material, and is anchored to the base. A fixing member for fixing the heat insulating material to the base, and a rubber sheet laminated on the heat insulating material and bonded to the fixing member by the heat sealing material. A resin composition containing a copolymer (A) comprising an aromatic vinyl unit and a vinyl cyanide unit and / or a copolymer (B) comprising an aromatic vinyl unit and an aliphatic carboxylic acid derivative unit. It is made by foaming.

  (2) Examples of the aromatic vinyl unit constituting the copolymer (A) and the copolymer (B) include styrene units.

  (3) An example of the vinyl cyanide unit constituting the copolymer (A) is acrylonitrile.

  (4) Examples of the aliphatic carboxylic acid derivative unit constituting the copolymer (B) include methacrylic acid or maleic anhydride.

  (5) The thermal insulation waterproofing method according to the present invention comprises a copolymer (A) comprising an aromatic vinyl unit and a vinyl cyanide unit and / or an aromatic vinyl unit and an aliphatic carboxylic acid derivative unit on the structure base. 1st process of laminating | stacking the heat insulating material formed by foaming the resin composition containing the copolymer (B) which consists of, and fixing which has a heat-fusion material in the surface exposed to the surface side of the said heat insulating material The member is anchored to the base and the second step of fixing the heat insulating material to the base, the third step of laminating a rubber sheet on the heat insulating material, and the heat sealing material is heated, A fourth step of bonding the fixing member and the rubber sheet.

  As described above, according to the present invention, the heat insulating material constituting the heat insulating waterproof structure is obtained by using a copolymer (A) comprising an aromatic vinyl unit and a vinyl cyanide unit and / or an aromatic vinyl unit and an aliphatic carboxylic acid derivative. Since the resin composition containing the unit-containing copolymer (B) is foamed, a mechanical fixing method or an exposure method that requires heat resistance in waterproofing the sheet using a rubber sheet Can be adopted.

  Embodiments of the present invention will be described below with reference to the drawings as appropriate. In addition, this embodiment is only an example of this invention, and it cannot be overemphasized that this embodiment can be changed suitably in the range which does not change the summary of this invention.

  FIG. 1 is a partial cross-sectional view showing a heat insulating waterproof structure 1 according to the present embodiment. FIG. 2 is an exploded perspective view showing the fixture 4 for fixing the heat insulating material 3. 3 to 6 are diagrams for explaining a construction method of the heat insulating waterproof structure 1. FIG. 7 is a partial cross-sectional view showing a configuration of a heat insulating waterproof structure 11 according to another embodiment. In addition, in each figure, the whole structure is not shown but only a part of the foundation | substrate 2 in which the heat insulation waterproof structure 1 is constructed is shown. Further, in FIG. 7, a part of the rubber sheet 16 is cut away to show the fixing bracket 15 covered with the rubber sheet 16.

[Insulation waterproof structure 1, base 2]
The heat insulating waterproof structure 1 is laminated on the base 2 of the structure. The structure is typified by a building having a reinforced concrete structure or a steel structure, but the construction method and shape of the structure are not particularly limited. Further, the foundation 2 of the structure is an outer surface of the structure such as a flat roof, a rooftop, a balcony, and an outer wall. For example, the heat insulating waterproof structure 1 is constructed using a flat roof of a reinforced concrete structure as a base 2. The base 2 is not limited to a flat surface, and may be a surface shape such as a folded plate or a curved surface.

[Insulation 3]
A heat insulating material 3 is laid on the base 2. The heat insulating material 3 is used in the heat insulating waterproof structure 1 mainly for the purpose of ensuring heat insulating performance. The heat insulating material 3 contains a copolymer (A) composed of an aromatic vinyl unit and a vinyl cyanide unit and / or a copolymer (B) composed of an aromatic vinyl unit and an aliphatic carboxylic acid derivative unit. The resin composition is foamed. Details of the resin composition will be described later. The heat insulating material 3 is a flat rectangular parallelepiped having a predetermined thickness. For example, a material having a thickness of 20 to 100 mm and a vertical and horizontal dimension of 910 mm × 910 mm is used. The heat insulating material 3 having such a fixed shape is spread on the base 2 without a gap, and is fixed to the base 2 by the fixing bracket 4. The fixing bracket 4 is an example of a fixing member in the present invention. In addition, the heat insulating material 3 does not necessarily need to be directly laid on the base 2, and may be laminated on the base 2 in a state where another member such as an insulating sheet is interposed.

  Hereinafter, the resin composition used for the heat insulating material 3 will be described in detail. As described above, the heat insulating material 3 includes a copolymer (A) composed of an aromatic vinyl unit and a vinyl cyanide unit and / or a copolymer composed of an aromatic vinyl unit and an aliphatic carboxylic acid derivative unit ( A resin composition containing B) is foamed.

  Examples of the aromatic vinyl unit constituting the copolymer (A) and the copolymer (B) include styrene, α-methylstyrene, ethylstyrene, isopropylstyrene, dimethylstyrene, bromostyrene, chlorostyrene, vinyltoluene, and vinylxylene. Is mentioned. Of these, styrene and α-methylstyrene are preferable because they are industrially inexpensive, and styrene, which is cheaper, is most preferable.

  Examples of the vinyl cyanide unit constituting the copolymer (A) include acrylonitrile, methacrylonitrile, and α-chloroacrylonitrile. Of these, acrylonitrile is preferred because it is industrially inexpensive.

  The aliphatic carboxylic acid derivative unit constituting the copolymer (B) is generally composed of a group consisting of an aliphatic acid halide, an aliphatic acid anhydride, an aliphatic carboxylic acid, an aliphatic ester, and an aliphatic amide. Is done.

  Among the aliphatic carboxylic acid derivative units described above, monomers that can be copolymerized with aromatic vinyl units include acrylic acid, methacrylic acid, propiolic acid, crotonic acid, pentenoic acid, hexenoic acid, sorbic acid, heptenoic acid, Unsaturated monocarboxylic acid units such as undecylenic acid, linolenic acid, linoleic acid, and oleic acid, and unsaturated carboxylic acid anhydrides such as maleic anhydride and itaconic anhydride are generally used. From the viewpoint, a methacrylic acid unit which is an unsaturated carboxylic acid unit or a maleic anhydride unit which is an unsaturated carboxylic anhydride unit is preferred, and a methacrylic acid unit is most preferred.

  In addition to the resin composition described above, other resins may be used as necessary. Examples of such other resins include styrene homopolymer, styrene-butadiene copolymer, acrylonitrile-butadiene-styrene copolymer, high impact polystyrene, styrene-α-methylstyrene-acrylonitrile copolymer, and the like.

  In particular, the copolymer (B) is preferable even when used in combination with a styrene polymer because the heat resistance is improved as compared with a polystyrene foam of 100% styrene polymer without impairing the molding processability.

  In the resin composition, 3 to 10 parts by weight of a foaming agent containing no chlorine atom is used with respect to 100 parts by weight of the thermoplastic resin mixture comprising the copolymer (A) and / or the copolymer (B). be able to. In addition, as such a foaming agent, one or more of a physical foaming agent and a chemical foaming agent can be used. The absence of a chlorine atom is preferable because it reduces the burden on the environment, but it is not always necessary to contain no chlorine atom in order to achieve the object of the present invention.

  Examples of physical blowing agents include hydrocarbons such as propane, n-butane, i-butane, n-pentane, i-pentane, neopentane, cyclopentane, hexane, cyclohexane, methyl chloride, ethyl chloride, propyl chloride, and chloride. Alkyl chlorides such as isopropyl, 1,1-difluoroethane, 1,2-difluoroethane, 1,1,1-trifluoroethane, 1,1,2-trifluoroethane, 1,1,1,2-tetrafluoroethane 1,1,2,2-tetrafluoroethane, fluorinated hydrocarbons such as 1,1,1,2,2-pentafluoroethane, difluoromethane, trifluoromethane, carbon dioxide, nitrogen, water, argon, helium, etc. Inorganic gas, dimethyl ether, diethyl ether, methyl ethyl ether, isopropyl ether Ethers such as n-butyl ether, diisoamyl ether, furan, furafur, 2-methylfuran, tetrahydrofuran, tetrahydropyran, formic acid methyl ester, formic acid ethyl ester, formic acid propyl ester, formic acid butyl ester, formic acid amyl ester, propionic acid methyl ester Carboxylic acid esters such as ethyl propionate, alcohols such as methanol, ethanol, propyl alcohol, i-propyl alcohol, butyl alcohol, i-butyl alcohol, t-butyl alcohol, dimethyl ketone, methyl ethyl ketone, diethyl ketone, methyl -N-propyl ketone, methyl-n-butyl ketone, methyl-i-butyl ketone, methyl-n-amyl ketone, methyl-n-hexyl ketone, ethyl-n Propyl ketone, ketones such as ethyl -n- butyl ketone. These can be used alone or in admixture of two or more.

  Examples of the chemical blowing agent include N, N′-dinitrosopentamethylenetetramine, p, p′-oxybis-benzenesulfonylhydrazide, hydrazodicarbonamide, sodium carbonate, azodicarbonamide, terephthalazide, 5-phenyltetrazole, p -Toluenesulfonyl semicarbazide and the like. These can be used alone or in admixture of two or more.

  Among the above-mentioned blowing agents, from the viewpoint of protecting the ozone layer, hydrocarbons such as propane, n-butane, i-butane, n-pentane, i-pentane, neopentane, cyclopentane, hexane, cyclohexane, methyl chloride, Alkyl chlorides such as ethyl chloride, propyl chloride, isopropyl chloride, inorganic gases such as carbon dioxide, nitrogen, water, argon, helium, dimethyl ether, diethyl ether, methyl ethyl ether, isopropyl ether, n-butyl ether, diisoamyl ether, etc. And ethers such as methanol, ethanol, propyl alcohol, i-propyl alcohol, butyl alcohol, i-butyl alcohol and t-butyl alcohol are preferred.

  Of the foaming agents described above, considering the weight reduction of the heat insulating material 3 and the stability of extrusion foaming, the foaming agent contains the copolymer (A) and / or the copolymer (B). A) 0.5 to 10 parts by weight of one or more selected from the group consisting of ether and alkyl chloride, and b) 0 to 6 parts by weight of hydrocarbons with respect to 100 parts by weight of the resulting thermoplastic resin mixture. The thing containing is preferable.

  Examples of the ether include the ethers described above, and among these, dimethyl ether is preferable because the extrusion pressure during extrusion foaming is reduced and the extrusion foam is stably produced. The amount of ether used is preferably 0.5 to 10 parts by weight, more preferably 1.5 to 6 parts by weight, and even more preferably 3 to 5 parts by weight with respect to 100 parts by weight of the thermoplastic resin mixture. . If the amount of ether used is within the above range, gas dispersibility in the resin composition is good and foamability is good.

  Examples of the alkyl chloride include methyl chloride, ethyl chloride, propyl chloride, and isopropyl chloride. Of these, methyl chloride and ethyl chloride are preferable because the extrusion pressure during extrusion foaming is reduced and the extrusion foam is stably produced. The amount of alkyl chloride used is preferably 0.5 to 10 parts by weight, more preferably 1.5 to 6 parts by weight, still more preferably 3 to 5 parts by weight, based on 100 parts by weight of the thermoplastic resin mixture. is there. When the amount of alkyl chloride used is within the above range, gas dispersibility in the resin composition is good and foamability is good.

  Examples of the hydrocarbon include the hydrocarbons described above, but if the boiling point is too low, the vapor pressure in the resin composition increases during extrusion foaming, and the high-pressure resin composition is controlled. If the boiling point is too high, the foaming agent remains in a liquid state in the bubbles of the heat insulating material 3 and the heat resistance of the heat insulating material 3 tends to be lowered. Accordingly, the hydrocarbon is preferably a saturated hydrocarbon having a boiling point in the range of −50 to 85 ° C. Such saturated hydrocarbons include propane, cyclopropane, n-butane, i-butane, cyclobutane, n-pentane, i-pentane, neopentane, cyclopentane, hexane, 2-methylpentane, 3-methylpentane, 1 , 2-dimethylbutane, cyclohexane and the like. Among these, propane, n-butane, i-butane, n-pentane, i-pentane, neopentane, cyclopentane, n-hexane and cyclohexane are preferable from the viewpoint of production stability. As a usage-amount of hydrocarbon, 0-6 weight part is preferable, More preferably, it is 2-5 weight part. If the amount of hydrocarbon used is within the above range, a foam having good foamability and moldability tends to be obtained.

  In the present invention, it is preferable to add a flame retardant to the resin composition. More preferably, at least one selected from halogen-based flame retardants is used as the flame retardant. Moreover, you may make a phosphate ester type compound and a nitrogen-containing compound coexist with the said flame retardant.

  Further, in the present invention, an inorganic compound such as silica, mica, zinc oxide, titanium oxide, calcium carbonate, calcium stearate, sodium stearate, magnesium stearate, as long as it does not inhibit the effects of the present invention as necessary. Additives such as processing aids such as barium stearate, liquid paraffin, olefin waxes, stearylamide compounds, antistatic agents, and colorants may be used.

  In the present invention, a stabilizer may be used as necessary. Examples of the stabilizer used in the present invention include light-resistant stabilizers such as phenolic antioxidants, phosphorus stabilizers, benzotriazoles and hindered amines.

  The heat insulating material 3 is obtained by a known extrusion foaming method using the above resin composition. For example, the above thermoplastic resin mixture is supplied to a known extruder, heated and melted under high temperature and high pressure to form a gel, a foaming agent is injected into the extruder, kneaded, and cooled to a resin temperature suitable for extrusion foaming. The plate-like heat insulating material 3 is obtained by extrusion foaming from a high pressure region to a low pressure region through a die such as a slit die.

  As conditions for extrusion foaming, the pressure in the slit die is preferably 3 MPa or more, more preferably 4 MPa or more. Of course, the internal pressure of the extrusion system is maintained at a high level so that the foaming agent does not vaporize and is sufficiently dissolved in the resin composition. When the pressure in the slit die is out of the above range, gas profile, void generation, and fluctuation in the cross-sectional profile of the extruded foam due to pressure fluctuation in the extrusion system tend to occur.

  As a procedure for adding an additive such as a flame retardant to the thermoplastic resin mixture, for example, after adding and mixing a flame retardant to the thermoplastic resin mixture, the mixture is supplied to an extruder, heated and melted, and further a foaming agent The timing of adding various additives to the thermoplastic resin mixture and the kneading time are not particularly limited.

  Although the heating temperature of a thermoplastic resin mixture should just be more than the glass transition temperature or melting | fusing point, the temperature which suppresses the molecular degradation of resin by the influence of a flame retardant etc. as much as possible is preferable. The melt-kneading time varies depending on the amount of resin composition extruded per unit time and the type of extruder, so it cannot be uniquely defined, and the thermoplastic resin mixture and the foaming agent or additive are uniformly dispersed and mixed. It is appropriately set as the time required for

  Examples of the means for heating and melting the resin composition include a screw-type extruder, but are not particularly limited as long as they are used for ordinary extrusion foaming. However, in order to suppress the molecular degradation of the resin as much as possible, it is preferable that the screw shape of the extruder is of a low shear type.

  The extrusion foaming method is, for example, a method in which an extrusion foam obtained by releasing pressure from a high pressure region to a low pressure region through a slit die having a linear slit shape used for extrusion molding is in close contact with the slit die. A method of forming the heat insulating material 3 using a molding die placed in contact with the molding die and a molding roll installed adjacent to the downstream side of the molding die is used. By adjusting the flow surface shape and the mold temperature of the molding die, a desired foam cross-sectional shape, foam surface property, and foam quality can be obtained.

  Examples of the bubble structure of the heat insulating material 3 include a uniform bubble structure and a composite bubble structure in which large and small bubbles are mixed. It is preferable that the average diameter of the bubbles is mainly 0.05 to 2.0 mm. For example, a part of the cross section of the extruded foam is sampled, and the average bubble diameter is measured according to ASTM D-3576 from a photograph obtained by magnifying and photographing the sample with a scanning electron microscope. it can. All of the bubble diameters are not necessarily in the above range, and at least the average value of the bubble diameters may be in the above range. If the bubble diameter is less than the above range, the moldability of the heat insulating material 3 is deteriorated and stable production tends to be difficult. When the bubble diameter exceeds the above range, the appearance of the surface of the heat insulating material 3 tends to deteriorate.

It is preferable that the foam density of the heat insulating material 3 is 20 to 100 kg / m ³ . If the foam density is within the above range, surface compressive strength represented by plane compressive strength tends to be developed.

  In addition, the manufacturing method of the heat insulating material 3 is not limited to the extrusion foaming method, For example, other well-known methods, such as the method of foam-molding with a shaping die using the pre-expanded foam bead, may be used. Good.

[Fixing bracket 4]
The heat insulating material 3 is fixed to the base 2 by a fixing metal fitting 4. As shown in FIG. 2, the fixture 4 includes a disk 40 and a screw 41. The disk 40 is a disk-shaped flat plate, and has a hole 42 in the center. The shape of the disk 40 is not particularly limited, and may be another shape such as a rectangular flat plate. Further, the size and thickness of the disk 40 are not particularly limited, but generally, a disk-shaped diameter of about 60 to 100 mm and a thickness of about 0.2 to 1.5 mm are used. The hole 42 is penetrated in the thickness direction of the disk 40, and the surface side, that is, the side exposed to the surface of the heat insulating material 3, is expanded in a tapered shape so that the inner diameter continuously expands. The shaft portion 43 of the screw 41 is inserted into the hole 42 and is locked so that the head portion 44 of the screw 41 is fitted into the surface side of the hole 42 whose diameter is increased in a tapered shape.

  In the disk 40, the substrate is covered with a heat sealing material. The substrate is preferably formed from a material that generates heat by electromagnetic induction heating. As the substrate, for example, a metal such as stainless steel, a galvanized steel plate, or a galvanium steel plate is used. The heat sealing material is coated on at least the surface side of the disk 40. In other words, the heat sealing material may be coated on the entire disk 40. The heat-fusible material is melted by heating and solidified by cooling, and is fused to the rubber sheet 5 that is in contact in the process of melting and solidification. Examples of the heat-sealing material include olefin resins such as polyethylene, polypropylene, and ethylene-vinyl acetate copolymer resin (EVA), and modified olefins such as chlorinated polyethylene, chlorinated polypropylene, and maleated ethylene vinyl acetate obtained by modifying them. Examples thereof include resins and olefinic thermoplastic elastomers. The heat insulating material 3 is not necessarily fixed to the base 2 by the fixing metal fitting 4 alone, and may be fixed by the fixing metal fitting 4 in a state where another member such as an insulating sheet is laminated on the heat insulating material 3. .

[Rubber sheet 5]
A rubber sheet 5 is laminated on the heat insulating material 3 fixed to the base 2 by the fixing metal 4. The rubber sheet 5 is used mainly for the purpose of ensuring waterproof performance, and is exposed as a skin in the heat insulating waterproof structure 1. The rubber sheet 5 is, for example, a belt-like thing having a thickness of 1 to 3 mm and a width of 1000 to 1500 mm is laid on the heat insulating material 3 without a gap. The rubber sheet 5 is fused by the heat-sealing material of the fixing bracket 4 and fixed on the heat insulating material 3. Further, the seams of the rubber sheet 5 are overlapped and bonded and fixed, and are further patched with a tape or the like as necessary. The rubber sheet 5 is made of vulcanized or non-vulcanized synthetic rubber, and specific examples thereof include ethylene propylene rubber, butyl rubber, and chlorosulfonated polyethylene. The adhesive for bonding the rubber sheets 5 to each other is, for example, a solvent-based adhesive, a synthetic rubber-based, a synthetic resin-based, or a polymer cement-based adhesive.

  A finish paint 6 is applied to the surface of the rubber sheet 5. The finish paint 6 is used according to the design of the appearance of the structure. When the color and texture of the material of the rubber sheet 5 are allowed from the appearance of the structure, the finish paint 6 may be omitted. In addition, in the present invention, the skin of the heat insulating waterproof structure is a concept that does not include what is applied to the rubber sheet 5 like the finish paint 6. Therefore, the skin in the heat insulating waterproof structure 1 is constituted by the rubber sheet 5.

[Insulation waterproofing method]
Below, the construction method (heat insulation waterproofing construction method) of the heat insulation waterproof structure 1 is demonstrated. This construction method is generally classified as a mechanical waterproofing method with a waterproof sheet. Moreover, when a rubber sheet is exposed as a skin, it is classified as an exposure method. First, the base 2 such as a flat roof of a reinforced concrete structure is cleaned and washed, and the base 2 is sufficiently dried. Then, as shown in FIG. 3, the heat insulating material 3 is spread on the base 2. A plurality of the heat insulating materials 3 are used in accordance with the size of the base 2, and the adjacent heat insulating materials 3 are arranged in close contact with each other. This step corresponds to the first step of the heat insulating waterproofing method according to the present invention.

  Subsequently, the heat insulating material 3 laid on the base 2 is fixed by the fixing bracket 4. Even if the heat insulating material 3 is fixed every time the heat insulating material 3 is laid on the base 2, the heat insulating material 3 is fixed once to the plurality of heat insulating materials 3 after the heat insulating materials 3 are laid on the base 2. You may fix to. The number and position of the fixing metal 4 with respect to one heat insulating material 3 are not particularly limited, and the number and position of the fixing metal 4 are appropriately set so that the heat insulating material 3 has a fixing strength that does not rise due to wind or the like. The

  As shown in FIG. 4, the fixing metal fitting 4 is passed through the heat insulating material 3 from the surface side of the heat insulating material 3 (upper side in FIG. 4), and the heat insulating material 3 is anchored to the base 2. To describe in detail, a hole for inserting the screw 41 of the fixing bracket 4 is drilled at a predetermined position of the heat insulating material 3 using a drill or the like. This hole penetrates the heat insulating material 3 and reaches the base 2. Dust and the like in the drilled hole are removed, and the disk 40 is placed on the surface of the heat insulating material 3 along with the hole. Then, the screw 41 is inserted into the hole 42 of the disk 40, and the screw 41 is driven into the drilled hole. By repeating this operation at a predetermined position of the heat insulating material 3, the heat insulating material 3 is anchored to the base 2 by the fixing bracket 4 as shown in FIG. 4. In this state, the disk 40 of the fixture 4 is fixed to the surface of the heat insulating material 3, and the heat sealing material of the disk 40 is exposed to the surface side of the heat insulating material 3. This step corresponds to the second step of the heat insulating waterproofing method according to the present invention.

  In addition, the anchor fixing work method by the fixing bracket 4 is, for example, other known methods such as driving a screw 40 using an air-type hammering machine or the like without drilling holes in the base 2 and the heat insulating material 3 in advance. It may be adopted. Further, in order to increase the pulling strength of the screw 41, the screw 41 may be driven after inserting a nylon plug or the like into the hole formed in the base 2 and the heat insulating material 3.

  Subsequently, as shown in FIG. 5, a rubber sheet 5 is spread on the heat insulating material 3. A plurality of rubber sheets 5 are used according to the size of the base 2. For example, when using a belt-like rubber sheet 5 having a certain width, the adjacent rubber sheets 5 are partially overlapped and spread without gaps. This step corresponds to the third step of the heat insulating waterproofing method according to the present invention.

  Subsequently, the rubber sheet 5 laid on the heat insulating material 3 is bonded to the fixing metal fitting 4 by heat fusion. In detail, as shown in FIG. 6, the rubber sheet 5 laid on the heat insulating material 3 is in contact with the disk 40 of the fixing bracket 4 exposed on the surface of the heat insulating material 3. At the position where the rubber sheet 5 and the disk 40 are in contact, the rubber sheet 5 rises by the thickness of the disk 40, so that the position of the disk 40 can be easily confirmed visually from above the rubber sheet 5. The electromagnetic induction heating device 10 is placed at the position, and electromagnetic induction heating is performed on the substrate of the disk 40. When the substrate is heated, the heat-sealing material coated on the substrate is melted. When the electromagnetic induction heating for a predetermined time is finished, the melted heat-sealing material is naturally cooled and solidified. As a result, the fixing bracket 4 and the rubber sheet 5 are fused (adhered) via the heat sealing material. This step corresponds to the fourth step of the heat insulating waterproofing method according to the present invention.

  Even if the fixing member 4 and the rubber sheet 5 are fused by electromagnetic induction heating while the rubber sheet 5 is laid on the heat insulating material 3, one or more rubber sheets 5 are bonded to the heat insulating material 3. After laying on the top, electromagnetic induction heating may be performed collectively on one or a plurality of rubber sheets 5.

  Thereafter, the seam of the rubber sheet 5 is bonded, and if necessary, tape or the like is attached to the seam to ensure water tightness. Then, the finish paint 6 is applied to the rubber sheet 5. Thus, the heat insulation waterproof structure 1 which consists of a heat insulation layer and a waterproof layer is constructed. In the heat insulating waterproof structure 1, the heat insulating material 3 functions as a heat insulating layer, and the rubber sheet 5 functions as a waterproof layer. Since the heat insulating material 3 is superior in heat resistance as compared with the conventional polystyrene foam, even if the fixing metal 4 is heated by electromagnetic induction heating, the heat insulating material 3 is not deformed by heat conduction from the fixing metal 4 and is made of rubber. The sheet 5 is securely fused to the fixing bracket 4. Further, due to the heat resistance of the heat insulating material 3, even if an exposure method in which the rubber sheet 5 is exposed as a skin is adopted, the heat insulating material 3 is not deformed by heating by solar radiation. Therefore, the versatility of the heat insulating material 3 in the heat insulating waterproof structure is increased, and the cost can be reduced.

  The heat insulating waterproof structure 1 is an example of the heat insulating waterproof structure according to the present invention. For example, as the waterproof layer, a plurality of rubber sheets 5 are stacked, or other insulating sheets such as an insulating sheet are provided above and below the heat insulating material 3. A member may be interposed. The heat insulating waterproof structure 1 is an exposed construction method in which the rubber sheet 5 laminated on the heat insulating material 3 is exposed as a skin. In the heat insulating waterproof structure according to the present invention, the rubber sheet 5 is provided with a concrete plate or a synthetic resin. Plates may be laminated. A construction method in which a concrete plate or a synthetic resin plate is laminated for waterproofing a sheet is generally called a protection method.

[Another embodiment]
Below, the heat insulation waterproof structure which concerns on another embodiment is demonstrated. In this heat insulating waterproof structure, the fixing bracket is driven from above the rubber sheet, and the heat insulating material is fixed to the base together with the rubber sheet. Such a fixing method is also referred to as a disk retrofitting method.

[Thermal insulation structure 11, base 12]
The heat insulating waterproof structure 11 is laminated on the base 12 of the structure. Since the structure and the base 12 are the same as those described in the heat-insulating and waterproofing structure 1, detailed description thereof is omitted. A heat insulating material 13 is laid on the base 12. The heat insulating material 13 is mainly used in the heat insulating waterproof structure 11 for the purpose of ensuring heat insulating performance.

[Insulation material 13]
The heat insulating material 13 contains a copolymer (A) composed of an aromatic vinyl unit and a vinyl cyanide unit and / or a copolymer (B) composed of an aromatic vinyl unit and an aliphatic carboxylic acid derivative unit. The resin composition is foamed. Since the details of this resin composition are the same as those of the heat insulating material 3, detailed description thereof is omitted here.

[Rubber sheet 14]
A rubber sheet 14 is laminated on the heat insulating material 13. The rubber sheet 14 is mainly used for the purpose of ensuring waterproof performance. The rubber sheet 14 is exposed as a skin in the heat insulating waterproof structure 11. The rubber sheet 14 is, for example, a belt-like thing having a thickness of 1 to 3 mm and a width of 1000 to 1500 mm is laid on the heat insulating material 13 without a gap. The material of the rubber sheet 14 is the same as that of the rubber sheet 5.

[Fixing bracket 15]
The heat insulating material 13 and the rubber sheet 14 are fixed to the base 12 by a fixing bracket 15. The fixing bracket 15 is made of a disk and a screw similarly to the fixing bracket 4. However, in the heat insulating waterproof structure 11, the fixing bracket 15 and the rubber sheet 14 are not heat-sealed. The 15 disks are not limited to those covered with a heat-sealing material. Further, the substrate of the disk is not limited to a material that generates heat by electromagnetic induction heating.

[Rubber sheet 16]
An upper side of the fixing metal 15 anchored to the base 12 is covered with a rubber sheet 16. When the fixing bracket 15 is driven into the rubber sheet 14, a hole is made in the rubber sheet 14. In order to prevent rainwater from entering the inside of the heat insulating waterproof structure 11 from this hole, the rubber sheet 16 is laminated so as to cover the entire fixing bracket 15 exposed on the surface of the rubber sheet 14. The rubber sheet 16 can be made of the same material as the rubber sheet 14. Further, the shape of the rubber sheet 16 is not particularly limited. An adhesive is used to fix the rubber sheet 14 and the rubber sheet 16. Examples of the adhesive include solvent-based adhesives, synthetic rubber-based, synthetic resin-based, and polymer cement-based adhesives.

  A finish paint 17 is applied to the surfaces of the rubber sheets 14 and 16. The finish paint 17 is used in accordance with the design of the appearance of the structure. When the color and texture of the material of the rubber sheets 14 and 16 are allowed from the appearance of the structure, the finish paint 17 may be omitted. In the present invention, the skin having a heat insulating waterproof structure is one that is laminated only on a part of the rubber sheet 14 such as the rubber sheet 16 or one that is applied to the rubber sheet 14 such as the finish paint 17. It is a concept that does not include. Therefore, the skin in the heat insulating waterproof structure 11 is constituted by the rubber sheet 14.

[Insulation waterproofing method]
Below, the construction method (thermal insulation waterproofing method) of the heat insulation waterproof structure 11 is demonstrated. This construction method is generally classified as a mechanical waterproofing method with a waterproof sheet. Further, when the rubber sheet 14 is exposed as a skin, it is classified as an exposure method. First, the base 12 such as a flat roof of a reinforced concrete structure is cleaned and washed, and the base 12 is sufficiently dried. Then, the heat insulating material 13 is spread on the base 12. A plurality of the heat insulating materials 13 are used in accordance with the size of the base 12, and the adjacent heat insulating materials 13 are arranged in close contact with each other.

  Subsequently, a rubber sheet 14 is spread on the heat insulating material 13. A plurality of rubber sheets 14 are used according to the size of the base 12. For example, when a belt-shaped rubber sheet 14 having a constant width is used, adjacent rubber sheets 14 are partially overlapped and spread without gaps.

  Subsequently, the heat insulating material 13 and the rubber sheet 14 laminated on the base 12 are fixed by the fixing bracket 15. The number and the position of the fixing metal 15 with respect to the heat insulating material 13 and the rubber sheet 14 are not particularly limited, and the number and the position of the fixing metal 15 are appropriately set so that the heat insulating material 13 has a fixing strength that does not rise due to wind or the like. Is set. In particular, it is preferable to dispose the fixing bracket 15 in the portion where the adjacent rubber sheets 14 are overlapped.

  The fixing metal 15 penetrates the base 12 through the heat insulating material 13 and the rubber sheet 14 from the surface side of the rubber sheet 14. In order to describe an example of the construction of the fixing bracket 15, holes are made at predetermined positions of the heat insulating material 13 and the rubber sheet 14 using a drill or the like. This hole penetrates the heat insulating material 13 and the rubber sheet 14 and reaches the base 12. Dust and the like inside the drilled hole are removed, and the screw of the fixing bracket 15 is driven into the hole. Thereby, the heat insulating material 13 and the rubber sheet 14 are anchored to the base 12 by the fixing metal 15.

  Subsequently, the rubber sheet 16 is laminated so as to cover the disk of the fixing metal 15 exposed on the surface of the rubber sheet 14. The rubber sheet 16 is bonded and fixed to the rubber sheet 14 to ensure watertightness. Further, the seam of the rubber sheet 14 is also adhered, and a tape or the like is attached to the seam as necessary to ensure water tightness. Then, a finish paint 17 is applied to the rubber sheets 14 and 16. Thus, the heat insulation waterproof structure 11 which consists of a heat insulation layer and a waterproof layer is constructed.

  In the heat insulating waterproof structure 11, the heat insulating material 13 functions as a heat insulating layer, and the rubber sheets 14 and 16 function as a waterproof layer. Since the heat insulating material 13 is superior in heat resistance as compared with the conventional polystyrene foam, the heat insulating material 13 is deformed by heating by solar radiation even if an exposure method in which the rubber sheet 14 is exposed as a skin is adopted. There is no. Therefore, the versatility of the heat insulating material 13 in the heat insulating waterproof structure is increased, and the cost can be reduced.

  Hereinafter, the Example about the said heat insulating material 3 is demonstrated. Needless to say, the present invention is not limited to the following examples. In the following examples, “%” represents “% by weight” unless otherwise specified.

  About the heat insulating materials obtained in Examples 1 to 5 and Comparative Examples 1 to 2 shown below, foam density, average cell diameter, 80 ° C. heat resistance, 85 ° C. heat resistance, 90 ° C. heat resistance, The 80 ° C. moisture resistance was examined according to the following method. Moreover, the laminated structure with the rubber-made sheets was produced using each heat insulating material, and the simple construction test was done.

(1) Foam density (kg / m ³ )
The foam density was determined based on the following formula, and the unit was shown in terms of kg / m ³ .
Foam density (g / cm ³ ) = foam weight (g) / foam volume (cm ³ )

(2) Average cell diameter (mm)
Cross section cut perpendicularly (thickness direction) along the width direction (horizontal direction orthogonal to the extrusion direction), and perpendicular (thickness direction) along the extrusion direction (horizontal direction orthogonal to the width direction) Sampling was performed on the cut section, and the sample was magnified 50 to 100 times with a scanning electron microscope and photographed. The average cell diameter was measured according to ASTM D-3576 from the obtained photograph, and in each bubble, the cell diameter (HD) in the thickness direction, the cell diameter (TD) in the width direction, and the cell diameter (MD) in the extrusion direction. , And the value obtained by taking the cube of the product of the cell diameters in each direction was calculated from the following equation.
Average cell diameter = (HD x TD x MD) ^1/3

(3) 80 ° C. heat resistance, 85 ° C. heat resistance, 90 ° C. heat resistance (volume change rate of heat insulating material)
After conditioning the insulation for 10 days in a temperature-controlled room with a temperature of 23 ° C. and a humidity of 55%, a sample with a thickness of 25 mm × width of 100 mm × length of 300 mm was cut out and the temperature was 80 ± 2 ° C., temperature 85 ± 2 ° C. It heated for 24 hours with the hot air dryer set to the temperature of 90 +/- 2 degreeC, and calculated the volume change rate before and after a heating. The obtained volume change rate was judged according to the following criteria.
A: Volume change rate is 1% or less.
A: Volume change rate exceeds 1% and is 3% or less.
(Triangle | delta): Volume change rate exceeds 3% and is 5% or less.
X: Volume change rate exceeds 5%.

(4) Moisture resistance at 80 ° C. After conditioning the heat insulating material for 10 days in a temperature-controlled room with a temperature of 23 ° C. and a humidity of 55%, a sample with a thickness of 25 mm × width 100 mm × length 300 mm was cut out to a temperature of 80 ± 2 ° C. After heating for 60 days with a constant temperature and humidity machine set to a humidity of 90 ± 2%, the warpage in the thickness direction of the heat insulating material was measured. The measured warpage was judged according to the following criteria.
○: Warpage is 3 mm or less.
(Triangle | delta): Warpage exceeds 3 mm and is 6 mm or less.
X: Warpage exceeds 6 mm.

(5) Simple construction test After the heat insulating material was molded, the condition was adjusted for 10 days in a temperature-controlled room at a temperature of 23 ° C. and a humidity of 55%, and a test piece having a thickness of 25 mm × width of 100 mm × length of 300 mm was cut out. After installing a fixing bracket (Mitsusei Belting Co., Ltd., trade name: NB disk) in one central part of each heat insulating material and laying a rubber sheet (Mitsusei Belting Co., Ltd., trade name: Newbren) on it, Using a high frequency electromagnetic induction heater (Mitsuboshi Belting Co., Ltd.), the fixing bracket was heated from above the rubber sheet for 500 W × 10 seconds, and the rubber sheet and the fixing bracket were fused to form a laminated structure. About this laminated structure, the state of the heat insulating material at the position where the fixing metal fitting was installed, and the surface condition of the heat insulating material and the rubber sheet at the portion fused with the fixing metal fitting were evaluated. This evaluation was performed according to the following criteria by observing the state of the heat insulating material at the position where the fixing metal fitting was installed and the surface state of the rubber sheet at the portion fused with the fixing metal fitting.
○: The surface of the heat insulating material was not deformed, and the fixing metal fitting and the rubber sheet were sufficiently fused.
(Triangle | delta): Although a part of surface of the heat insulating material melt | dissolved and the fixing metal fitting was buried a little, the fixing metal fitting and the rubber-made sheet | seat were fully fuse | melted.
X: The surface of the heat insulating material was depressed, the fixing bracket was buried, and the fixing bracket and the rubber sheet were not sufficiently fused.

Example 1
As the copolymer (A), Toyo Styrene Co., Ltd., trade name: Toyo AS is used, and talc (trade name: Talcan powder, manufactured by Hayashi Kasei Co., Ltd.) is used as a nucleating agent for 100 parts by weight of the copolymer. 0.3 parts by weight and 0.2 parts by weight of calcium stearate as an additive were dry blended, and the resulting resin composition was supplied to a two-stage connection type extruder. After the resin composition supplied to the first stage extruder is heated to about 230 ° C. and melt-kneaded, 5.0 parts by weight of dimethyl ether (Mitsui Chemicals) is used as a foaming agent in the vicinity of the front end of the first stage extruder. Pressed into the object. Then, while kneading the resin composition in the second stage extruder connected to the first stage extruder, the resin temperature is cooled to about 140 ° C., and in the atmosphere from the slit die provided at the tip of the second stage extruder Pushed out. The discharge rate in the slit die was 47 kg / hour, the resin temperature was 130 ° C., and the slit pressure was 5.3 MPa. The discharged resin had a cross-sectional profile of about 45 mm in thickness and about 140 mm in width by a molding die and a molding roll, and a heat insulating material having a skin layer on the surface was obtained.

  About the obtained heat insulating material, the foam density, the average cell diameter, 80 ° C. heat resistance, 85 ° C. heat resistance, 90 ° C. heat resistance, and 80 ° C. moisture resistance were examined according to the methods described above. Moreover, the simple construction test was done using the obtained heat insulating material. The results are shown in Table 1.

The heat insulating material in Example 1 had a foam density of 35 kg / m ³ and an average cell diameter of 0.4 mm. Further, the heat resistance at 80 ° C. was “◎”, the heat resistance at 85 ° C. was “◎”, the heat resistance at 90 ° C. was “Δ”, and the moisture resistance at 80 ° C. was “◯”. The surface condition of the fusion-bonded part of the fixing metal by the simple construction test was “◯”.

(Example 2)
Add 3.0 parts by weight of dimethyl ether as a foaming agent, 3.0 parts by weight of isobutane (Mitsui Chemicals Co., Ltd.), 0.1 part by weight of talc as a nucleating agent, discharge rate in a slit die is 45 kg / hour, and resin temperature is 132 A heat insulating material was obtained in the same manner as in Example 1 except that the temperature and the slit pressure were set to 6.2 MPa.

Table 1 shows the properties of the obtained heat insulating material. As shown in Table 1, the heat insulating material in Example 2 had a foam density of 40 kg / m ³ and an average cell diameter of 0.2 mm. Further, the heat resistance at 80 ° C. was “◎”, the heat resistance at 85 ° C. was “◎”, the heat resistance at 90 ° C. was “Δ”, and the moisture resistance at 80 ° C. was “◯”. The surface condition of the fusion-bonded part of the fixing metal by the simple construction test was “◯”.

(Example 3)
PSJ Co., Ltd., trade name: G9001 (7% methacrylic acid modification rate) is used as the copolymer (B), and PSJ Co., Ltd., trade name: G9401 is used as the polystyrene resin. And 75 parts by weight of polystyrene resin were mixed to obtain a thermoplastic resin mixture. 100 parts by weight of this thermoplastic resin mixture was dry blended with 0.3 parts by weight of talc (trade name: Talcan powder, manufactured by Hayashi Kasei Co., Ltd.) as a nucleating agent and 0.2 parts by weight of calcium stearate as an additive. The obtained resin composition was supplied to a two-stage connection type extruder. After the resin composition supplied to the first stage extruder is melted and kneaded at about 230 ° C., 2.0 parts by weight of dimethyl ether and 4.0 parts by weight of isobutane are used as a foaming agent near the tip of the first stage extruder. Press fit into the composition. Then, while kneading the resin composition in the second stage extruder connected to the first stage extruder, the resin temperature is cooled to about 140 ° C., and in the atmosphere from the slit die provided at the tip of the second stage extruder Pushed out. The discharge rate in the slit die was 50 kg / hour, the resin temperature was 130 ° C., and the slit pressure was 6.3 MPa. The discharged resin had a cross-sectional profile of about 45 mm in thickness and about 140 mm in width by a molding die and a molding roll, and a heat insulating material having a skin layer on the surface was obtained.

Table 1 shows the properties of the obtained heat insulating material. As shown in Table 1, the heat insulating material in Example 3 had a foam density of 32 kg / m ³ and an average cell diameter of 0.3 mm. Further, the heat resistance at 80 ° C. was “、”, the heat resistance at 85 ° C. was “◯”, the heat resistance at 90 ° C. was “x”, and the moisture resistance at 80 ° C. was “Δ”. The surface condition of the fusion-bonded portion of the fixing metal by the simple construction test was “Δ”.

Example 4
Except for the thermoplastic resin mixture having a copolymer (B) / polystyrene resin mixing ratio of 50 parts by weight / 50 parts by weight, the discharge rate in the slit die was 52 kg / hour, and the slit pressure was 6.0 MPa. In the same manner as in No. 3, a heat insulating material was obtained.

Table 1 shows the properties of the obtained heat insulating material. As shown in Table 1, the heat insulating material in Example 4 had a foam density of 32 kg / m ³ and an average cell diameter of 0.3 mm. Further, the heat resistance at 80 ° C. was “◎”, the heat resistance at 85 ° C. was “◎”, the heat resistance at 90 ° C. was “Δ”, and the moisture resistance at 80 ° C. was “◯”. The surface condition of the fusion-bonded portion of the fixing metal by the simple construction test was “Δ”.

(Example 5)
A thermoplastic resin mixture having a copolymer (B) / polystyrene resin mixing ratio of 100 parts by weight / 0 parts by weight is used. The discharge rate in the slit die is 52 kg / hour, the resin temperature is 135 ° C., and the slit pressure is 6.2 MPa. The heat insulating material was obtained like Example 3 except having performed.

Table 1 shows the properties of the obtained heat insulating material. As shown in Table 1, the heat insulating material in Example 5 had a foam density of 35 kg / m ³ and an average cell diameter of 0.3 mm. Further, the heat resistance at 80 ° C. was “、”, the heat resistance at 85 ° C. was “◎”, the heat resistance at 90 ° C. was “◯”, and the moisture resistance at 80 ° C. was “◯”. The surface condition of the fusion-bonded part of the fixing metal by the simple construction test was “◯”.

(Comparative Example 1)
Using polystyrene resin (PS Japan Co., Ltd., trade name: G9401), melted by heating to about 230 ° C. in the first stage extruder and about 140 ° C. in the second stage extruder, and the discharge amount in the slit die is 50 kg / hour. A heat insulating material was obtained in the same manner as in Example 1 except that the temperature was 123 ° C. and the slit pressure was 5.5 MPa.

Table 1 shows the properties of the obtained heat insulating material. As shown in Table 1, the heat insulating material in Comparative Example 1 had a foam density of 35 kg / m ³ and an average cell diameter of 0.3 mm. Further, the heat resistance at 80 ° C. was “Δ”, the heat resistance at 85 ° C. was “x”, the heat resistance at 90 ° C. was “x”, and the moisture resistance at 80 ° C. was “Δ”. The surface state of the fusion-bonded portion of the fixing metal by the simple construction test was “×”.

(Comparative Example 2)
80 ° C heat resistance, 85 ° C heat resistance, 90 ° C heat resistance, 80 ° C moisture resistance, simple construction test using commercially available rigid polyurethane foam (made by Toyo Rubber Co., Ltd., trade name: Soflan UL board, with face material) Went. The results are shown in Table 1.

  As shown in Table 1, in Comparative Example 2, the 80 ° C. heat resistance was “「 ”, the 85 ° C. heat resistance was“ 「”, the 90 ° C. heat resistance was “◯”, and the 80 ° C. moisture resistance was “×”. It was. The surface condition of the fusion-bonded part of the fixing metal by the simple construction test was “◯”.

FIG. 1 is a partial cross-sectional view showing a configuration of a heat insulating waterproof structure 1 according to an embodiment of the present invention. FIG. 2 is an exploded perspective view showing the configuration of the fixture 4. FIG. 3 is a diagram for explaining a construction method of the heat insulating waterproof structure 1. FIG. 4 is a cross-sectional view for explaining a construction method of the heat insulating waterproof structure 1. FIG. 5 is a diagram for explaining a construction method of the heat insulating waterproof structure 1. FIG. 6 is a cross-sectional view for explaining a method of electromagnetic induction heating. FIG. 7 is a partial cross-sectional view showing a configuration of a heat insulating waterproof structure 11 according to another embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,11 ... Thermal insulation waterproof structure 2,12 ... Base surface 3,13 ... Thermal insulation material 4,15 ... Fixing bracket 5,14,16 ... Rubber sheet

Claims (5)

Thermal insulation laminated on the foundation of the structure;
A fixing member that has a heat-sealing material on the surface exposed to the surface side of the heat insulating material, is anchored to the base, and fixes the heat insulating material to the base;
A rubber sheet laminated to the heat insulating material and bonded to the fixing member by the heat sealing material,
The heat insulating material contains a copolymer (A) composed of an aromatic vinyl unit and a vinyl cyanide unit and / or a copolymer (B) composed of an aromatic vinyl unit and an aliphatic carboxylic acid derivative unit. A heat insulating and waterproof structure formed by foaming a resin composition.   The heat insulating waterproof structure according to claim 1, wherein the aromatic vinyl units constituting the copolymer (A) and the copolymer (B) are styrene units.   The heat insulating waterproof structure according to claim 1 or 2, wherein the vinyl cyanide unit constituting the copolymer (A) is acrylonitrile.   The heat insulating waterproof structure according to any one of claims 1 to 3, wherein the aliphatic carboxylic acid derivative unit constituting the copolymer (B) is methacrylic acid or maleic anhydride. Containing a copolymer (A) comprising an aromatic vinyl unit and a vinyl cyanide unit and / or a copolymer (B) comprising an aromatic vinyl unit and an aliphatic carboxylic acid derivative unit at the base of the structure A first step of laminating a heat insulating material formed by foaming a resin composition to be
A second step of fixing the heat insulating material to the base by anchoring the fixing member having a heat-sealing material on the surface exposed to the surface side of the heat insulating material to the base; and
A third step of laminating a rubber sheet on the heat insulating material;
A heat insulating waterproofing method comprising: a fourth step of heating the heat sealing material to bond the fixing member and the rubber sheet.

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