JP5961101B2 - Thermally expandable multilayer frame material for sashes - Google Patents

Description

  The present invention relates to a thermally expandable multilayer frame material for sash, and more particularly to a thermally expandable multilayer frame material for sash obtained by molding a synthetic resin.

A molded body containing a thermally expandable resin composition expands when exposed to heat such as a fire to form a nonflammable expansion residue. Since this expansion residue can be used to prevent the spread of fire and the diffusion of smoke, molded articles containing a thermally expandable resin composition are widely used for building materials.
As a molded body containing a thermally expandable resin composition, a piping material obtained by extruding a polyvinyl chloride resin composition containing thermally expandable graphite has been proposed.
As one application example of polyvinyl chloride, the total amount of phosphorus compound and neutralized thermally expandable graphite is 20 with respect to 100 parts by weight of chlorinated polyvinyl chloride having a chlorine content of 60 to 71% by weight. In the range of ~ 200 parts by weight, the inorganic filler is in the range of 30 to 500 parts by weight, and the ratio of the weight of the phosphorus compound to the weight of the neutralized thermally expandable graphite is in the range of 9: 1 to 1: 9. Some chlorinated polyvinyl chloride resin compositions have been proposed (Patent Documents 1 and 2).
According to these prior art documents, it is disclosed that the chlorinated polyvinyl chloride resin composition can be used for extrusion molding.

As another application example of polyvinyl chloride, a piping material obtained by extruding a polyvinyl chloride resin composition containing thermally expandable graphite has been proposed.
One specific prior art includes a fire expansion layer formed of a resin composition containing 1 to 15 parts by weight of thermally expandable graphite with respect to 100 parts by weight of polyvinyl chloride, and a thermally expandable component Multi-layer fireproof piping materials having a coating layer formed of a non-polyvinyl chloride resin composition have been proposed (Patent Documents 3 and 4).
According to these prior arts, it is disclosed that a three-layer structure comprising a fireproof expansion layer, a coating layer inside the fireproof expansion layer, and a coating layer outside the fireproof expansion layer is obtained by three-layer coextrusion molding. .

In general, it is difficult to perform extrusion using a thermally expandable resin composition that starts to expand when heated.
The shape of the multilayer structure molded body disclosed in the prior art is a cylinder. When the cross-sectional shape of the molded body is symmetrical with respect to the central axis in the extrusion direction, the molded body can be molded because heat is applied evenly.
However, whether or not a molded body having a shape that can be used as a product is obtained when extrusion molding is performed using a thermally expandable resin composition for a shape other than a cylinder is the prior art shown above. It is unknown.

JP-A-9-227747 JP-A-10-95887 JP 2008-180367 A JP 2008-180068 A

When the present inventors examined extrusion molding of a polyvinyl chloride resin composition containing thermally expandable graphite, the above-mentioned molding was performed according to the fact that the cross-sectional shape of a molded product obtained by extrusion molding was different from a symmetrical shape having a central axis. I found a problem that the deterioration of the appearance of the product becomes large.
The problem of deterioration in the appearance of the molded product is when two or more resin compositions having different compositions among two or more resin compositions having different compositions are simultaneously extruded to mold a multilayer molded product. Become bigger.

On the other hand, the sash frame material used for the window frame is usually formed of aluminum alloy, wood or the like. However, in the case of a sash frame member made of a metal such as an aluminum alloy, there is a problem in terms of heat insulation because heat is easily transmitted.
In the case of a sash frame material made of wood, although it has excellent heat insulation properties, it has a problem of poor fire resistance against fires and the like.

  An object of the present invention is to provide a thermally expandable multilayer frame material for a sash that is excellent in appearance, heat insulation, and fire resistance and is suitable for mass production.

  As a result of intensive studies by the present inventors in order to solve the above problems, a thermally expandable resin composition layer comprising at least one of a chlorinated polyvinyl chloride-containing thermally expandable resin composition and an EPDM-containing thermally expandable resin composition; The present inventors have found that a thermally expandable multilayer frame material for a sash formed by co-extrusion with a thermoplastic resin composition layer is suitable for the purpose of the present invention, and the present inventors have completed the present invention.

That is, the present invention
[1] It comprises two or more resin composition layers including at least a thermally expandable resin composition layer and a thermoplastic resin composition layer,
The thermally expandable resin composition forming the thermally expandable resin composition layer comprises 100 parts by weight of a resin component, 3 to 300 parts by weight of thermally expandable graphite, 3 to 200 parts by weight of an inorganic filler, and 20 to 200 parts by weight of a plasticizer. Consists of parts
The resin component contained in the thermally expandable resin composition comprises at least one of a chlorinated polyvinyl chloride resin and EPDM having a chlorine content in the range of 60 to 72% by weight,
The thermal expansion for a sash, wherein the thermal expansion resin composition layer and the thermoplastic resin composition layer are formed by co-extrusion using the thermal expansion resin composition and the thermoplastic resin composition, respectively. A multilayered frame material is provided.

One of the present invention is
[2] The thermally expandable resin composition is selected from the group consisting of a heat stabilizer, a lubricant, a processing aid, a pyrolytic foaming agent, an antioxidant, an antistatic agent, a pigment, a crosslinking agent, and a crosslinking accelerator. The thermally expandable multilayer frame material for a sash according to the above [1], comprising at least one.

One of the present invention is
[3] The above [1] or [3], wherein the thermoplastic resin composition layer comprises at least one selected from the group consisting of a polyvinyl chloride resin composition, a chlorinated polyvinyl chloride resin composition, and an EPDM resin composition. [2] A thermally expandable multilayer frame material for a sash as described in [2].

One of the present invention is
[4] The thermally expandable multilayer frame material for sash has a cavity in the longitudinal direction,
The present invention provides the thermally expandable multilayer frame material for a sash as described in [3] above, wherein a part or all of the inner wall surface of the cavity is formed of the thermally expandable resin composition layer.

One of the present invention is
[5] The thermally expandable multilayer frame material for sash has a cavity in the longitudinal direction,
The thermally expandable multilayer for sash according to the above [3] or [4], wherein a part or all of the outer wall surface of the thermally expandable multilayer frame material for sash is formed of the thermally expandable resin composition layer. A frame material is provided.

One of the present invention is
[6] The thermally expandable multilayer frame material for sash has a window plate material support part,
The thermally expandable multilayer for sash according to any one of the above [3] to [5], wherein a part or all of the inner wall surface of the window plate support is formed of the thermally expandable resin composition layer. A frame material is provided.

One of the present invention is
[7] The sash thermally expandable multilayer frame material according to any one of [1] to [6], and a window plate.
The present invention provides a fireproof sash provided with the thermally expandable multilayer frame material for sash on the outer periphery of the window plate material.

One of the present invention is
[8] The sash thermally expandable multilayer frame material according to any one of [1] to [6], a non-combustible frame material, and a window plate material,
On the outer periphery of the window plate material, the non-combustible frame material is provided,
The sash heat-expandable multilayer frame material and the non-combustible frame material are bonded to each other to provide a fire-resistant sash.

One of the present invention is
[9] The fire-resistant sash according to [8], wherein the thermally expandable resin composition layer of the thermally expandable multilayer frame material for sash and the non-combustible frame material are bonded to each other. .

ADVANTAGE OF THE INVENTION According to this invention, the thermally expansible multilayer frame material for sashes which is excellent in the external appearance containing the 2 or more resin composition layer from which a composition differs by simultaneous coextrusion can be provided.
The thermally expandable multilayer frame material for sash of the present invention has a thermally expandable resin composition layer. For this reason, when the thermally expandable multilayer frame material for sash of the present invention is exposed to heat such as fire, the thermally expandable resin composition layer expands to form an expansion residue.
The expansion residue is nonflammable and can close the gap of the sash in which the thermally expandable multilayer frame material for sash is installed. Since the expansion residue can prevent the flame and smoke generated by a fire or the like from spreading through the sash gap, the thermally expandable multilayer frame material for sash of the present invention is excellent in fire resistance.

  The thermally expandable multilayer frame material for a sash according to the present invention can be easily mass-produced because it is obtained by co-extrusion of two or more resin composition layers having different compositions. Compared with the heat-expandable multi-layer frame material, it has excellent heat insulation.

FIG. 1 is a schematic cross-sectional view for explaining a thermally expandable multilayer frame material for a sash according to a first embodiment. FIG. 2 is a schematic partial perspective view for explaining the thermally expandable multilayer frame material for a sash according to the first embodiment. FIG. 3 is a schematic cross-sectional view for explaining the thermally expandable multilayer frame material for sash according to the second embodiment. FIG. 4 is a schematic cross-sectional view for explaining the thermally expandable multilayer frame material for sash according to the third embodiment. FIG. 5 is a schematic cross-sectional view for explaining the thermally expandable multilayer frame material for sash according to the fourth embodiment. FIG. 6 is a schematic cross-sectional view for explaining the thermally expandable multilayer frame material for a sash according to the fifth embodiment. FIG. 7 is a schematic cross-sectional view for explaining the thermally expandable multilayer frame material for sash according to the sixth embodiment. FIG. 8 is a schematic front view for explaining an application example of the thermally expandable multilayer frame material for sash obtained in Example 1. FIG. FIG. 9 is a schematic cross-sectional view for explaining an application example of the thermally expandable multilayer frame material for sash obtained in Example 1. FIG. FIG. 10 is a schematic perspective view for explaining a thermally expandable multilayer frame material for a sash used in Example 8. FIG. 11 is a schematic cross-sectional view for explaining the fireproof sash according to the eighth embodiment.

First, the thermally expandable resin composition used in the present invention will be described.
The thermally expandable resin composition used in the present invention comprises 100 parts by weight of a resin component, 3 to 300 parts by weight of thermally expandable graphite, 3 to 200 parts by weight of an inorganic filler, and 20 to 200 parts by weight of a plasticizer.

  The resin component contained in the thermally expandable resin composition used in the present invention is at least one of chlorinated polyvinyl chloride and EPDM.

  The chlorinated polyvinyl chloride resin is a chlorinated product of polyvinyl chloride resin. When the chlorine content of the chlorinated polyvinyl chloride resin decreases, the heat resistance decreases, and when it increases, melt extrusion molding becomes difficult, so the range is from 60 to 72% by weight.

The polyvinyl chloride resin is not particularly limited, and any conventionally known polyvinyl chloride resin can be used.
Examples of the polyvinyl chloride resin include vinyl chloride homopolymers,
A copolymer of a vinyl chloride monomer and a monomer having an unsaturated bond copolymerizable with the vinyl chloride monomer;
Examples thereof include polymers other than vinyl chloride monomers or graft copolymers obtained by graft copolymerization of vinyl chloride with copolymers other than vinyl chloride monomers.
The said polyvinyl chloride resin can use 1 type, or 2 or more types.

The monomer having an unsaturated bond copolymerizable with the vinyl chloride monomer is not particularly limited as long as it is copolymerizable with the vinyl chloride monomer. For example, α-olefins such as ethylene, propylene, butylene,
Vinyl esters such as vinyl acetate and vinyl propionate,
Vinyl ethers such as butyl vinyl ether and cetyl vinyl ether,
Acrylic esters such as methyl acrylate, ethyl acrylate, butyl acrylate,
Methacrylic acid esters such as methyl methacrylate, ethyl methacrylate, butyl methacrylate,
Aromatic vinyls such as styrene and α-methylstyrene,
And N-substituted maleimides such as N-phenylmaleimide and N-cyclohexylmaleimide.
One or two or more monomers having an unsaturated bond copolymerizable with the vinyl chloride monomer can be used.

The polymer other than the vinyl chloride monomer or the copolymer other than the vinyl chloride monomer is not particularly limited as long as it is graft-polymerized or graft-copolymerized with vinyl chloride. For example, an ethylene-vinyl acetate copolymer ,
Ethylene-vinyl acetate-carbon monoxide copolymer, ethylene-ethyl acrylate copolymer, ethylene-butyl acrylate-carbon monoxide copolymer, ethylene-methyl methacrylate copolymer, ethylene-propylene copolymer, acrylonitrile-butadiene Copolymers, polyurethane, chlorinated polyethylene, chlorinated polypropylene and the like can be mentioned.
These can use 1 type, or 2 or more types.

  The average degree of polymerization of the polyvinyl chloride resin is not particularly limited. However, when it becomes smaller, the mechanical properties of the molded article are lowered, and when it becomes larger, the melt viscosity becomes higher and melt extrusion molding becomes difficult. For this reason, it is preferable that the average degree of polymerization of the said polyvinyl chloride resin is the range of 600-1500.

The EPDM is a terpolymer of ethylene, propylene and a diene monomer for crosslinking.
The diene monomer for crosslinking used in the EPDM is not particularly limited. For example, 5-ethylidene-2-norbornene, 5-propylidene-5-norbornene, dicyclopentadiene, 5-vinyl-2-norbornene, 5-methylene Cyclic dienes such as 2-norbornene, 5-isopropylidene-2-norbornene, norbornadiene,
1,4-hexadiene, 4-methyl-1,4-hexadiene, 5-methyl-1,4-hexadiene, 5-methyl-1,5-heptadiene, 6-methyl-1,5-heptadiene, 6-methyl- Examples include chain non-conjugated dienes such as 1,7-octadiene.

The EPDM preferably has a Mooney viscosity (ML _{1 + 41} 25 ° C.) in the range of 4 to 30.
When the Mooney viscosity is 4 or more, the flexibility is excellent. Moreover, when Mooney viscosity is 30 or less, it can prevent becoming too hard.
The Mooney viscosity is a measure of viscosity measured by an EPDM Mooney viscometer.

The EPDM preferably has a crosslinking diene monomer content in the range of 2.0 wt% to 5.0 wt%.
If the amount is 2.0% by weight or more, the intermolecular cross-linking proceeds, so that the flexibility is excellent. If the amount is 5.0% by weight or less, the weather resistance is excellent.

  The heat-expandable graphite is a conventionally known substance, and powders such as natural scaly graphite, pyrolytic graphite, and quiche graphite are mixed with an inorganic acid such as concentrated sulfuric acid, nitric acid, and selenic acid, and concentrated nitric acid, perchloric acid, peroxygen, and the like. A graphite intercalation compound is produced by treatment with a strong oxidizing agent such as chlorate, permanganate, dichromate, or hydrogen peroxide. The heat-expandable graphite produced is a crystalline compound that maintains the layered structure of carbon.

In the thermally expandable graphite used in the present invention, the thermally expandable graphite obtained by the acid treatment may be neutralized with ammonia, an aliphatic lower amine, an alkali metal compound, an alkaline earth metal compound, or the like. .
Examples of the aliphatic lower amine include monomethylamine, dimethylamine, trimethylamine, ethylamine, propylamine, and butylamine.
Examples of the alkali metal compound and alkaline earth metal compound include hydroxides such as potassium, sodium, calcium, barium, and magnesium, oxides, carbonates, sulfates, and organic acid salts.
Specific examples of the thermally expandable graphite include “CA-60S” manufactured by Nippon Kasei Co., Ltd.

When the particle size of the thermally expandable graphite is too fine, the degree of expansion of the graphite is small, and the foamability tends to decrease. Further, if it becomes too large, there is an effect in that the degree of expansion is large, but when kneaded with a resin, the dispersibility is poor and the moldability is lowered, and the mechanical properties of the obtained extruded product tend to be lowered. .
For this reason, the particle size of the thermally expandable graphite is preferably in the range of 20 to 200 mesh.

If the amount of the thermally expansive graphite added decreases, the fire resistance and foamability tend to decrease. Moreover, when it increases, it will become difficult to extrusion-mold, the surface property of the obtained molded object will worsen, and there exists a tendency for a mechanical physical property to fall. For this reason, the addition amount of the thermally expandable graphite with respect to 100 parts by weight of the chlorinated polyvinyl chloride resin is in the range of 3 to 300 parts by weight.
The amount of the thermally expandable graphite added to 100 parts by weight of the chlorinated polyvinyl chloride resin is preferably in the range of 10 to 200 parts by weight.

  If the said inorganic filler is an inorganic filler generally used when manufacturing a polyvinyl chloride resin molded object, there will be no limitation in particular. Specifically, for example, silica, diatomaceous earth, alumina, zinc oxide, titanium oxide, calcium oxide, magnesium oxide, iron oxide, tin oxide, antimony oxide, ferrites, calcium hydroxide, magnesium hydroxide, aluminum hydroxide, base Magnesium carbonate, calcium carbonate, magnesium carbonate, zinc carbonate, barium carbonate, dawnite, hydrotalcite, calcium sulfate, barium sulfate, gypsum fiber, calcium silicate, talc, clay, my strength, montmorillonite, bentonite, activated clay, Seviolite, imogolite, sericite, glass fiber, glass beads, silica-based balun, aluminum nitride, boron nitride, silicon nitride, carbon black, graphite, carbon fiber, carbon balun, charcoal powder, various metal powders, potassium titanate, sulfur Magnesium titanate zirconia lead, aluminum borate, molybdenum sulfide, silicon carbide, stainless steel fiber, zinc borate, various magnetic powder, slag fibers, fly ash, and a dewatered sludge.

Of these, calcium carbonate and water-containing inorganic substances such as calcium hydroxide, magnesium hydroxide, and aluminum hydroxide that are dehydrated during heating and have an endothermic effect are preferable.
Antimony oxide is preferable because it has an effect of improving flame retardancy.
The said inorganic filler can use 1 type, or 2 or more types.

When the amount of the inorganic filler added is small, the fire resistance tends to be lowered, and when it is increased, extrusion molding is difficult, the surface properties of the obtained molded article are deteriorated, and the mechanical properties tend to be lowered. The amount is in the range of 3 to 200 parts by weight with respect to 100 parts by weight of the chlorinated polyvinyl chloride resin.
The amount of the inorganic filler added is preferably in the range of 10 to 150 parts by weight with respect to 100 parts by weight of the chlorinated polyvinyl chloride resin.

If the said plasticizer is a plasticizer generally used when manufacturing a polyvinyl chloride resin molded object, it will not specifically limit. Specifically, for example, phthalate plasticizers such as di-2-ethylhexyl phthalate (DOP), dibutyl phthalate (DBP), diheptyl phthalate (DHP), diisodecyl phthalate (DIDP),
Fatty acid ester plasticizers such as di-2-ethylhexyl adipate (DOA), diisobutyl adipate (DIBA), dibutyl adipate (DBA),
Epoxidized ester plasticizers such as epoxidized soybean oil,
Polyester plasticizers such as adipic acid ester and adipic acid polyester,
Trimellitic acid ester plasticizers such as tri-2-ethylhexyl trimellitate (TOTM) and triisononyl trimellitate (TINTM),
Phosphate plasticizers such as trimethyl phosphate (TMP) and triethyl phosphate (TEP),
Examples include process oils such as mineral oil.
One or more plasticizers can be used.

  When the amount of the plasticizer added is small, the extrusion moldability tends to be lowered, and when the amount is increased, the obtained molded product tends to be too soft. For this reason, the addition amount of the plasticizer is in the range of 20 to 200 parts by weight with respect to 100 parts by weight of the chlorinated polyvinyl chloride resin.

As described above, the chlorinated polyvinyl chloride-containing thermally expandable resin composition used in the present invention has a chlorinated polyvinyl chloride resin, a thermally expandable graphite, having a chlorine content in the range of 60 to 72% by weight, It consists of an inorganic filler and a plasticizer.
When the chlorinated polyvinyl chloride-containing thermally expandable resin composition contains a phosphorus compound excluding a phosphate ester plasticizer, the extrusion moldability is lowered. For this reason, it does not contain the phosphorus compound except the phosphate ester plasticizer. In addition, the phosphate plasticizer which is a plasticizer demonstrated previously can be contained.

Phosphorus compounds that inhibit extrusion are as follows.
Red phosphorus,
Various phosphate esters such as triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresyl diphenyl phosphate, xylenyl diphenyl phosphate,
Metal phosphates such as sodium phosphate, potassium phosphate, magnesium phosphate,
Ammonium polyphosphates,
Examples thereof include compounds represented by the following chemical formulas.

上記化学式中、Ｒ^１及びＲ^３は、水素、炭素数１〜１６の直鎖状若しくは分岐状のアルキル基、又は、炭素数６〜１６のアリール基を表す。

In the above chemical formula, R ¹ and R ³ represent hydrogen, a linear or branched alkyl group having 1 to 16 carbon atoms, or an aryl group having 6 to 16 carbon atoms.

R ² is a hydroxyl group, a linear or branched alkyl group having 1 to 16 carbon atoms, a linear or branched alkoxyl group having 1 to 16 carbon atoms, an aryl group having 6 to 16 carbon atoms, or carbon. The aryloxy group of Formula 6-16 is represented.

  Examples of the compound represented by the chemical formula include methylphosphonic acid, dimethyl methylphosphonate, diethyl methylphosphonate, ethylphosphonic acid, propylphosphonic acid, butylphosphonic acid, 2-methylpropylphosphonic acid, t-butylphosphonic acid, 2, 3-dimethyl-butylphosphonic acid, octylphosphonic acid, phenylphosphonic acid, dioctylphenylphosphonate, dimethylphosphinic acid, methylethylphosphinic acid, methylpropylphosphinic acid, diethylphosphinic acid, dioctylphosphinic acid, phenylphosphinic acid, diethylphenylphosphinic acid , Diphenylphosphinic acid, bis (4-methoxyphenyl) phosphinic acid and the like.

The ammonium polyphosphates are not particularly limited, and examples thereof include ammonium polyphosphate and melamine-modified ammonium polyphosphate.
In the present invention, these phosphorus compounds that inhibit extrusion moldability are not used.

  The heat-expandable resin composition used in the present invention has a heat stabilizer other than a phosphorus compound, a lubricant, a processing aid, a heat, and the like, which are generally used as necessary, as long as the physical properties are not impaired. Decomposable foaming agents, antioxidants, antistatic agents, pigments, crosslinking agents, crosslinking accelerators, and the like may be added.

Examples of the heat stabilizer include lead heat stabilizers such as tribasic lead sulfate, tribasic lead sulfite, dibasic lead phosphite, lead stearate, and dibasic lead stearate.
Organotin heat stabilizers such as organotin mercapto, organotin malate, organotin laurate, dibutyltin malate,
Examples thereof include metal soap heat stabilizers such as zinc stearate and calcium stearate.
One or two or more heat stabilizers can be used.

Examples of the lubricant include waxes such as polyethylene, paraffin, and montanic acid,
Various ester waxes,
Organic acids such as stearic acid, ricinoleic acid,
Organic alcohols such as stearyl alcohol,
Examples include amide compounds such as dimethylbisamide.
The said lubricant can use 1 type, or 2 or more types.

  Examples of the processing aid include chlorinated polyethylene, methyl methacrylate-ethyl acrylate copolymer, and high molecular weight polymethyl methacrylate.

  Examples of the thermally decomposable foaming agent include azodicarbonamide (ADCA), dinitrosopentamethylenetetramine (DPT), p, p-oxybisbenzenesulfonylhydrazide (OBSH), azobisisobutyronitrile (AIBN), and the like. Is mentioned.

  As said antioxidant, a phenol compound etc. are mentioned, for example.

  Examples of the antistatic agent include amino compounds.

  Examples of the pigment include organic pigments such as azo, phthalocyanine, selenium, and dye lake, and inorganic pigments such as oxide, molybdenum chromate, sulfide / selenide, and ferrocyanide. Can be mentioned.

  Examples of the crosslinking agent include sulfur. Examples of the crosslinking accelerator include tellurium diethyldithiocarbamate, N, N, N ′, N′-tetraethylthiuram disulfide, benzyl diethyldithiocarbamate, and the like.

[Specific Examples of Thermally Expandable Resin Composition]
Specific examples of the thermally expandable resin composition used in the present invention are as follows.
(A) Resin composition comprising a resin component, a thermally expandable graphite part, an inorganic filler part and a plasticizer (b) For the resin composition of (a) above, a heat stabilizer, lubricant, processing aid, thermal decomposition Resin composition comprising at least one selected from the group consisting of a mold foaming agent, an antioxidant, an antistatic agent, a pigment, a crosslinking agent and a crosslinking accelerator

Next, the thermoplastic resin composition used in the present invention will be described.
The thermoplastic resin composition used in the present invention is not particularly limited as long as it can be extruded. Examples of the resin component contained in the thermoplastic resin composition include polyvinyl chloride resin (PVC), Chlorinated polyvinyl chloride resin (CPVC), polyethylene (PE), polypropylene (PP), ethylene-propylene-diene copolymer (EPDM), chloroprene (CR), acrylonitrile-butadiene-styrene copolymer (ABS), acrylonitrile -Styrene-acrylonitrile copolymer (ASA), acrylonitrile / ethylene-propylene-diene / styrene copolymer (AES) and the like.
Examples of the resin include polyvinyl chloride resin (PVC), chlorinated polyvinyl chloride resin (CPVC), polyethylene (PE), polypropylene (PP), ethylene-propylene-crosslinking diene monomer copolymer (EPDM), chloroprene ( CR) and the like are preferable.

The polyvinyl chloride resin is not particularly limited, and any conventionally known polyvinyl chloride resin can be used.
Examples of the polyvinyl chloride resin include vinyl chloride homopolymers,
A copolymer of a vinyl chloride monomer and a monomer having an unsaturated bond copolymerizable with the vinyl chloride monomer;
Examples thereof include polymers other than vinyl chloride monomers or graft copolymers obtained by graft copolymerization of vinyl chloride with copolymers other than vinyl chloride monomers.
The said polyvinyl chloride resin can use 1 type, or 2 or more types.

The monomer having an unsaturated bond copolymerizable with the vinyl chloride monomer is not particularly limited as long as it is copolymerizable with the vinyl chloride monomer. For example, α-olefins such as ethylene, propylene, butylene,
Vinyl esters such as vinyl acetate and vinyl propionate,
Vinyl ethers such as butyl vinyl ether and cetyl vinyl ether,
Acrylic esters such as methyl acrylate, ethyl acrylate, butyl acrylate,
Methacrylates such as methyl methacrylate, ethyl methacrylate, butyl methacrylate,
Aromatic vinyls such as styrene and α-methylstyrene,
And N-substituted maleimides such as N-phenylmaleimide and N-cyclohexylmaleimide.
One or two or more monomers having an unsaturated bond copolymerizable with the vinyl chloride monomer can be used.

The polymer other than the vinyl chloride monomer or the copolymer other than the vinyl chloride monomer is not particularly limited as long as it is a graft polymer of vinyl chloride or a graft copolymer, and for example, an ethylene-vinyl acetate copolymer. ,
Ethylene-vinyl acetate-carbon monoxide copolymer, ethylene-ethyl acrylate copolymer, ethylene-butyl acrylate-carbon monoxide copolymer, ethylene-methyl methacrylate copolymer, ethylene-propylene copolymer, acrylonitrile-butadiene Copolymers, polyurethane, chlorinated polyethylene, chlorinated polypropylene and the like can be mentioned.
These can use 1 type, or 2 or more types.

  The average degree of polymerization of the polyvinyl chloride resin is not particularly limited. However, when it becomes smaller, the mechanical properties of the molded article are lowered, and when it becomes larger, the melt viscosity becomes higher and melt extrusion molding becomes difficult. For this reason, it is preferable that the average degree of polymerization of the said polyvinyl chloride resin is the range of 600-1500.

Moreover, as said chlorinated polyvinyl chloride resin (CPVC), what chlorinated the polyvinyl chloride resin (PVC) demonstrated previously, etc. are mentioned, for example.
When the chlorine content of the chlorinated polyvinyl chloride resin is reduced, melt extrusion molding is facilitated. When the chlorine content is increased, the heat resistance is improved.

  As said EPDM, the thing similar to the case of EPDM used as a resin component of the above-mentioned thermally expansible resin composition can be used.

  The thermoplastic resin composition used in the present invention can be obtained by adding the inorganic filler and the plasticizer described above to the resin component contained in the thermoplastic resin composition.

In the thermoplastic resin composition used in the present invention, as long as the physical properties are not impaired, a heat stabilizer, a lubricant, a processing aid, and a thermal decomposition type, which are generally used in extrusion molding, if necessary. A foaming agent, an antioxidant, an antistatic agent, a pigment and the like may be added.
These specific examples are the same as those exemplified above.

[Specific examples of thermoplastic resin composition]
Specific examples of the thermoplastic resin composition used in the present invention are as follows.
(C) Resin composition comprising a resin component and an inorganic filler (d) Resin composition comprising a resin component, a plasticizer and an inorganic filler (e) A thermal stabilizer for the resin composition of (c) above, Resin composition (f) formed by adding at least one selected from the group consisting of a lubricant, a processing aid, a thermal decomposable foaming agent, an antioxidant, an antistatic agent, a pigment, a crosslinking agent and a crosslinking accelerator (f) At least one selected from the group consisting of a thermal stabilizer, a lubricant, a processing aid, a pyrolytic foaming agent, an antioxidant, an antistatic agent, a pigment, a crosslinking agent, and a crosslinking accelerator for the resin composition of d). Resin composition comprising

By selecting a resin component to be used for the thermoplastic resin composition, various functions can be imparted to the thermally expandable multilayer frame material for sash of the present invention.
In the thermoplastic resin composition used in the present invention, it is preferable to select one or more of vinyl chloride resin, chlorinated polyvinyl chloride resin, EPDM and the like as the resin component.
When one or more of vinyl chloride resin, chlorinated polyvinyl chloride resin, EPDM, etc. are selected as the resin component, the resulting thermally expandable multilayer frame material for sash is flexible, airtight, watertight, and strong. Excellent.

The polyvinyl chloride resin composition used for the thermoplastic resin composition is conventionally known, and for example, those defined in the Japanese Industrial Standard (JIS) can be used.
The polyvinyl chloride resin composition includes a soft polyvinyl chloride resin composition and a hard polyvinyl chloride resin composition.
In addition, as the soft polyvinyl chloride resin composition, for example, a soft polyvinyl chloride compound (JIS K6723) defined in Japanese Industrial Standard can be used.
As the hard polyvinyl chloride resin composition, for example, non-plastic polyvinyl chloride-molding and extrusion materials (JIS K6740-1) defined in Japanese Industrial Standard can be used.

The resin composition used in the present invention can be preferably used for extrusion molding. Using the resin composition, a heat-expandable resin composition layer and a thermoplastic resin are melted at 130 to 170 ° C. and coextruded by an extruder such as a single screw extruder or a twin screw extruder according to a conventional method. A thermally expandable multilayer frame material for a long sash having a multilayer structure including at least a composition layer can be obtained.
The thermally expandable multilayer frame material for sash of the present invention is obtained by cutting the long thermally expandable multilayer frame material for sash into an appropriate length according to the application.

The thermally expandable multilayer frame material for sash of the present invention can be used in combination with a window plate material. A refractory sash is obtained by installing the sash heat-expandable multilayer frame material on the outer periphery of the window plate.
The thermally expandable multilayer frame material for sash of the present invention can also be used in combination with a non-combustible frame material.
Examples of the non-combustible frame material include metals such as aluminum alloy and stainless steel, inorganic materials such as glass and ceramics, and the like.
The thermally expandable multilayer frame material for sash and the non-combustible frame material can be bonded to each other with, for example, an adhesive or a double-sided adhesive tape.
The sash heat-expandable multi-layer frame material and the non-combustible frame material include, for example, a slide rail portion and a slide rail receiving portion that are slidable with each other on the sash heat-expandable multi-layer frame material and the non-combustible frame material, respectively. In addition, it can be fixed by combining the slide rail portion and the slide rail receiving portion.
A fireproof sash can be obtained by combining the thermally expandable multilayer frame material for sash, the non-combustible frame material, and the window plate material.

  Hereinafter, the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited at all by these Examples.

[Structure of thermally expandable multilayer frame material 100 for sash]
FIG. 1 is a schematic cross-sectional view for explaining a thermally expandable multilayer frame material for a sash according to a first embodiment, based on a plane perpendicular to the longitudinal direction of the thermally expandable multilayer frame material for a sash according to the first embodiment. A cross-sectional shape is shown. FIG. 2 is a schematic partial perspective view for explaining the thermally expandable multilayer frame material for a sash according to the first embodiment.
A sash heat-expandable multilayer frame material 100 according to Example 1 shown in FIG. 1 includes a heat-expandable resin composition layer 11 and a thermoplastic resin composition layer 21. Moreover, it has the board | plate material support part 40 for windows.
Moreover, the thermally expandable multilayer frame material 100 for a sash according to the first embodiment has cavities 30 to 32 in the longitudinal direction. As shown in FIG. 1, the thermally expandable multilayer frame material for a sash used in the present invention has one or more cavities. The thermally expandable multilayer frame material 100 for a sash according to the first embodiment has a plurality of cavities 30 to 32. By installing these cavities 30 to 32, the weight of the thermally expandable multilayer frame material 100 for a sash is increased. In addition to the reduction, the sash thermal expansion multilayer frame member 100 can be provided with a vibration absorbing function, a heat insulating function, and the like.

  Further, by installing the thermally expandable resin composition layer 10 on the inner wall surface of the cavity 30, the thermally expandable resin when the thermally expandable multilayer frame material 100 for sash is exposed to heat such as a fire. An expansion residue is smoothly formed from the composition layer 10. Thereby, the fire resistance of the thermally expandable multilayer frame material 100 for a sash can be improved.

In the case of a conventional sash frame material, it has been necessary to insert a thermally expandable refractory material or the like into the sash frame material.
On the other hand, in the case of the thermally expandable multilayer frame material 100 for sash according to Example 1, since it can be formed by simultaneous coextrusion, the thermally expandable multilayer frame material 100 for sash is simultaneously formed with the thermal expandability. The resin composition layer 10 can be installed. For this reason, it is excellent in productivity per unit time.

[Production Example of Thermally Expandable Multilayer Frame Material 100 for Sash]
A predetermined amount of chlorinated vinyl chloride resin shown in Table 1 (manufactured by Tokuyama Sekisui Co., Ltd., “HA-53K” polymerization degree 1000, chlorine content 67.3 wt%, hereinafter referred to as “CPVC-1”), vinyl chloride Resin (“TS-1000R” manufactured by Tokuyama Sekisui Co., Ltd., polymerization degree 1000, hereinafter referred to as “PVC”), thermal expansive graphite (“GREP-EG” manufactured by Tosohichi Co., Ltd.), calcium carbonate (manufactured by Shiroishi Kausium “ Whiten BF300 "), diisodecyl phthalate (" DIDP "manufactured by J. Plus, hereinafter referred to as" DIDP "), Ca-Zn composite stabilizer (" NT-231 "manufactured by Mizusawa Chemical), calcium stearate (カ ル シ ウ ム"SC-100" manufactured by Kagaku Co., Ltd., chlorinated polyethylene ("135A" manufactured by Weihai Kinhiro Co., Ltd.) and polymethyl methacrylate ("P-530A" manufactured by Mitsubishi Rayon Co., Ltd.) A vinyl chloride-containing thermally expandable resin composition (corresponding to the thermally expandable resin composition layer 10), and
PVC, calcium carbonate (“Whiteon BF300” manufactured by Shiraishi Calcium Co., Ltd.), diisodecyl phthalate (“DIDP”), Ca—Zn composite stabilizer (“NT-231” manufactured by Mizusawa Chemical Co., Ltd.), calcium stearate (manufactured by Sakai Chemical Co., Ltd. SC-100 "), a chlorinated polyethylene (" 135A "manufactured by Weihai Kinhiro Co., Ltd.) and a polymethyl methacrylate (" P-530A "manufactured by Mitsubishi Rayon Co., Ltd.)) (the thermoplastic resin composition layer 20). 1) is supplied to a single screw extruder (Ikegai Machine Sales Co., Ltd., 65 mm extruder), and co-extrusion is performed at 150 tons, and the long profile molded body having a cross-sectional shape shown in FIG. 1 is 1 m / hr. Can be co-extruded at a speed of
The results are shown in Table 1, where the extruder and the mold were observed, and the case where adhesion of the resin composition was observed was marked as x, and the case where adhesion of the resin composition was not observed was marked as ◯.
By cutting the obtained long-shaped molded body in a direction perpendicular to the longitudinal direction of the long-shaped molded body, the thermally expandable multilayer frame material 100 for sash according to Example 1 is obtained. This thermally expandable multilayer frame material 100 for a sash is excellent in appearance.

[Structure of thermally expandable multilayer frame material 110 for sash]
FIG. 3 is a schematic cross-sectional view for explaining the thermally expandable multilayer frame material for a sash according to the second embodiment.
The sash heat-expandable multilayer frame material 110 according to the second embodiment is a modification of the sash heat-expandable multilayer frame material 100 according to the first embodiment.
In the case of the thermally expandable multilayer frame material 100 for a sash according to Example 1, a part of the inner wall surface of one cavity 30 was formed by the thermally expandable resin composition layer 10.
On the other hand, the thermally expandable multilayer frame material 110 for sash according to the second embodiment has all the inner wall surfaces of the plurality of cavities 30 to 32 of the thermally expandable multilayer frame material 110 for sash, with the vertical direction in FIG. Is formed by the thermally expandable resin composition layer 10.

  Further, the thermally expandable multilayer frame material 110 for a sash according to the second embodiment includes a window plate material support portion 40. A sash can be formed by installing a window plate, which will be described later, on the window plate support 40.

  With reference to the horizontal direction of the window plate when the window plate is installed with respect to the window plate support 40, the inner wall surfaces of the cavities 30 to 32 of the sash thermally expandable multilayer frame member 110 are The heat-expandable resin composition layer 10 is covered with no gaps.

In the case of the conventional sash frame material, in order to increase the fire resistance, it was necessary to insert a thermally expandable refractory material etc. into the inside, but depending on the position of the cavity inside the conventional sash frame material It may be difficult to insert a thermally expandable refractory material or the like.
On the other hand, in the case of the thermally expandable multilayer frame material 110 for sash according to Example 2, the thermally expandable resin composition layer 10 is installed at an arbitrary position in the cross section of the thermally expandable multilayer frame material 110 for sash. can do.
For this reason, compared with the conventional sash frame material, the fire resistance of the thermally expandable multilayer frame material 110 for sash can be easily improved.

[Production Example of Thermally Expandable Multilayer Frame Material 110 for Sash]
The thermally expandable multilayer frame material 110 for a sash according to the second embodiment can be manufactured by the same co-extrusion molding as in the first embodiment. Specific formulation examples are as shown in Table 1.
The sash heat-expandable multilayer frame material 110 obtained by the co-extrusion molding is excellent in appearance.

[Structure of thermally expandable multilayer frame material 120 for sash]
FIG. 4 is a schematic cross-sectional view for explaining the thermally expandable multilayer frame material for sash according to the third embodiment.
The sash thermally expandable multilayer frame material 120 according to the third embodiment is a modification of the sash thermally expandable multilayer frame material 100 according to the first embodiment.
In the case of the thermally expandable multilayer frame material 100 for a sash according to Example 1, a part of the inner wall surface of one cavity 30 was formed by the thermally expandable resin composition layer 10.
On the other hand, in the thermally expandable multilayer frame material 120 for sash according to Example 3, the entire inner wall surface of the window plate material support portion 40 is formed by the thermally expandable resin composition layer 10.

In the case of the conventional sash frame material, in order to increase the fire resistance, it was necessary to insert a thermally expandable refractory material etc. into the inside, but depending on the position of the cavity inside the conventional sash frame material It may be difficult to insert a thermally expandable refractory material or the like.
In contrast, in the case of the thermally expandable multilayer frame material 120 for sash according to Example 3, the thermally expandable resin composition layer 10 is installed at an arbitrary position in the cross section of the thermally expandable multilayer frame material 120 for sash. can do.
For this reason, compared with the conventional sash frame material, the fire resistance of the window plate material support portion 40 of the sash thermally expandable multilayer frame material 120 can be easily increased.

[Example of production of thermally expandable multilayer frame material 120 for sash]
The sash thermally expandable multilayer frame material 120 according to the third embodiment can be manufactured by the same co-extrusion molding as in the first embodiment. Specific formulation examples are as shown in Table 1.
The thermally expandable multilayer frame material 120 for sash obtained by the co-extrusion molding is excellent in appearance.

[Structure of thermally expandable multilayer frame material 130 for sash]
FIG. 5 is a schematic cross-sectional view for explaining the thermally expandable multilayer frame material for sash according to the fourth embodiment.
The sash heat-expandable multilayer frame material 130 according to the fourth embodiment is a modification of the sash heat-expandable multilayer frame material 100 according to the first embodiment.
In the case of the thermally expandable multilayer frame material 100 for a sash according to Example 1, a part of the inner wall surface of one cavity 30 was formed by the thermally expandable resin composition layer 10.
On the other hand, in the thermally expandable multilayer frame material 130 for sash according to Example 4, a part of the inner wall surface of one cavity 30 is formed by the thermally expandable resin composition layer 10, and the window plate material support The entire inner wall surface of the portion 40 is formed of the thermally expandable resin composition layer 10.

In the case of the conventional sash frame material, in order to increase the fire resistance, it was necessary to insert a thermally expandable refractory material etc. into the inside, but depending on the position of the cavity inside the conventional sash frame material It may be difficult to insert a thermally expandable refractory material or the like.
On the other hand, in the case of the thermally expandable multilayer frame material for sash 130 according to Example 4, the thermally expandable resin composition layer 10 is installed at an arbitrary position in the cross section of the thermally expandable multilayer frame material 130 for sash. can do.
For this reason, compared with the conventional sash frame material, the fire resistance of the window plate material support portion 40 of the sash heat-expandable multilayer frame material 130 can be easily increased.

[Production example of thermally expandable multilayer frame material 130 for sash]
The sash thermally expandable multilayer frame material 130 according to the fourth embodiment can be manufactured by the same co-extrusion molding as in the first embodiment. Specific formulation examples are as shown in Table 1.
The sash heat-expandable multilayer frame material 130 obtained by the co-extrusion molding is excellent in appearance.

[Structure of thermally expandable multilayer frame material 140 for sash]
6 is a schematic cross-sectional view for explaining a thermally expandable multilayer frame material for a sash according to a fifth embodiment.
The sash heat-expandable multilayer frame material 140 according to the fifth embodiment is a modification of the sash heat-expandable multilayer frame material 120 according to the third embodiment.
In the case of the thermally expandable multilayer frame material 120 for a sash according to Example 3, the entire inner wall surface of the window plate support 40 was formed by the thermally expandable resin composition layer 10.
In contrast, the thermally expandable multilayer frame material 140 for sash according to Example 5 has an opening 41, and a part of the inner wall surface of the opening 41 is formed by the thermally expandable resin composition layer 10. Is formed.
This opening 41 can be installed in a window rail or the like.

In the case of the conventional sash frame material, in order to increase the fire resistance, it was necessary to insert a thermally expandable refractory material etc. into the inside, but depending on the position of the cavity inside the conventional sash frame material It may be difficult to insert a thermally expandable refractory material or the like.
On the other hand, in the case of the thermally expandable multilayer frame material 140 for sash according to Example 5, the thermally expandable resin composition layer 10 is installed at an arbitrary position in the cross section of the thermally expandable multilayer frame material 140 for sash. can do.
For this reason, compared with the conventional sash frame material, the fire resistance of the window plate material support portion 40 and the opening portion 41 of the sash heat-expandable multilayer frame material 140 can be easily increased.

[Production example of thermally expandable multilayer frame material 140 for sash]
The sash heat-expandable multilayer frame material 140 according to the fifth embodiment can be manufactured by the same co-extrusion molding as in the third embodiment. Specific formulation examples are as shown in Table 1.
The sash heat-expandable multilayer frame material 140 obtained by the co-extrusion molding is excellent in appearance.

The sixth embodiment is a modification of the first embodiment.
FIG. 7 is a schematic cross-sectional view for explaining the thermally expandable multilayer frame material for sash according to the sixth embodiment.
In the thermally expandable multilayer frame material 100 for sash according to Example 1, the thermally expandable resin composition layer 11 is formed of a chlorinated polyvinyl chloride-containing thermally expandable resin composition, and the thermoplastic resin composition layer 21. Was formed by the polyvinyl chloride resin composition.
In contrast, in the thermally expandable multilayer frame material 150 for a sash according to Example 6, the thermally expandable resin composition layer 11 is formed of an EPDM resin composition, and the thermoplastic resin composition layer 21 is an EPDM-containing heat. The point which is formed with the expansible resin composition differs.
Table 2 shows formulation examples that can be used in Example 6. As in Example 1, the thermally expandable multilayer frame material 150 for sash according to Example 6 can be obtained by the formulation in Table 2.

[Comparative Examples 1 and 2]
With the formulation shown in Table 1, molding was attempted in the same manner as in Example 1. For the ammonium polyphosphate, “AP422” manufactured by Clariant Japan was used.
In both cases of Comparative Examples 1 and 2, adhesion of the resin composition to the screw and mold of the extruder was observed.

[Application example of thermally expandable multilayer frame material 100 for sash]
FIG. 8 is a schematic front view for explaining an application example of the thermally expandable multilayer frame material 100 for sash obtained in Example 1, and FIG. 9 is a thermally expandable multilayer frame for sash obtained in Example 1. 3 is a schematic cross-sectional view for explaining an application example of the material 100. FIG.
In the seventh embodiment, window glass is used as the window plate 50.
The window plate 50 used in the present invention preferably has fire resistance.
A glazing channel 60 made of hard polyvinyl chloride is installed so as to cover the outer periphery of the window plate member 50, and a protective material 51 is installed on the outer periphery of the glazing channel 60.
The window plate 50 is inserted through the glazing channel 60 into the window plate support 40 of the sash thermal expansion multilayer frame member 100.

In addition, the said glazing channel 60 can also shape | mold the main-body part and the projection part formed in the edge part of the said main-body part by simultaneous coextrusion using a different material.
It is preferable that a boundary line of a joint surface between the main body portion and the projection portion observed from a cross section with respect to a vertical plane with respect to the longitudinal direction of the glazing channel 60 includes at least one of a broken line and a curved line.
When the boundary line includes at least one of a broken line and a curved line, the bonding area between the main body portion and the protruding portion increases as compared with the case where the boundary line is a straight line. It is possible to reduce peeling of the boundary surface.

  The glazing channel 60 is formed by co-extrusion of the main body portion and the protruding portion formed at the end portion of the main body portion by using the thermally expandable resin composition and the thermoplastic resin composition, respectively. Is preferred.

As shown in FIG. 8, the fire-resistant sash 160 is obtained by combining the sash heat-expandable multilayer frame material 100 and the window plate material 50.
As shown in FIG. 8, a total of four sash heat-expandable multilayer frame materials 100 obtained by Example 1 are installed on the outer periphery of the window plate 50. .

When observed from the vertical direction of the window plate 50, the thermally expandable resin composition layer 10 covers the inside of the cavity 30 without any gap around the plate 50 with respect to a plane parallel to the plate 50. .
For this reason, when the fireproof sash 160 using the thermally expandable multilayer frame material 100 for sash is exposed to heat such as fire, the periphery of the window plate 50 and the thermally expandable multilayer frame material 100 for sash In the meantime, an expansion residue is formed by the thermally expandable resin composition layer 10.
Since the expansion residue supports the plate member 50, the window plate member 50, the sash thermal expansion multilayer frame member 100, the wall on which the sash thermal expansion multilayer frame member 100 is installed, and The expansion residue can be integrated to block flames and smoke such as the fire.
For this reason, the fire-resistant sash 160 using the thermally expandable multilayer frame material 100 for sash is excellent in fire resistance.

[Thermal expansion multi-layer frame material 170 for sash and its application example]
FIG. 10 is a schematic perspective view for explaining a sash heat-expandable multilayer frame material 170 used in Example 8. FIG.
As shown in FIG. 10, the sash heat-expandable multilayer frame material 500 is a combination of the sash heat-expandable multilayer frame material 170 and the non-combustible frame material 300.
The non-combustible frame material 300 used in Example 8 is made of an aluminum alloy having a cavity inside. Further, the sash heat-expandable multi-layer frame material 170 is formed by the heat-expandable resin composition layer 10 on the surface in contact with the non-combustible frame material 300. The thermally expandable resin composition layer 10 and the thermoplastic resin composition layer 20 are formed by co-extrusion and have cavities 30 and 31 therein.
Formulation examples that can be used in Example 8 are the same as those in Example 1 shown in Table 1, and the thermally expandable multilayer frame material 170 for sash used in Example 8 can be obtained.

The non-combustible frame material 300 and the sash heat-expandable multilayer frame material 170 are each provided with a slide rail portion and a slide rail receiving portion that can slide with each other.
By combining the slide rail portion and the slide rail receiving portion, the non-combustible frame material 300 and the sash heat-expandable multilayer frame material 170 can be fixed to each other.

FIG. 11 is a schematic cross-sectional view for explaining the fireproof sash according to the eighth embodiment.
As shown in FIG. 11, a refractory sash 600 is obtained by combining the sash heat-expandable multilayer frame material 170, the non-combustible frame material 300, and the glass panel 200.
When the fireproof sash 600 is incorporated in an outer wall, the sash heat-expandable multilayer frame material 170 is usually installed indoors and the non-combustible frame material 300 is installed outdoor.

  When the fireproof sash 600 is exposed to heat such as a fire, the thermally expandable resin composition layer 10 included in the thermally expandable multilayer frame material 170 for sash expands to form an expansion residue. Since the expansion residue closes the gap between the glass panel 200 and the non-combustible frame member 300, it is possible to block a flame such as a fire. Therefore, the fireproof sash 600 is excellent in fire resistance.

  Since the thermally expandable multilayer frame material for sash according to the present invention can arrange the thermally expandable resin composition layer at any desired position, in addition to being able to easily increase the fire resistance of the building material, Various functions can be added by utilizing the function of the thermoplastic resin composition layer to be used. The thermally expandable multilayer frame material for a sash according to the present invention can be widely used as a building material for windows for use in buildings, ships and the like that require fire resistance.

DESCRIPTION OF SYMBOLS 10, 11 Thermally expandable resin composition layer 20, 21 Thermoplastic resin composition layer 30-32 Cavity 40 Window board material support part 41 Opening part 50 Window board material 51 Protection material 60 Grazing channel 100,110,120,130, 140, 150, 170, 500 Thermally expandable multilayer frame material for sashes 160, 600 Fire-resistant sash 200 Glass panel 300 Non-combustible frame material

Claims (9)

It consists of two or more resin composition layers including at least a thermally expandable resin composition layer and a thermoplastic resin composition layer,
The thermally expandable resin composition forming the thermally expandable resin composition layer comprises 100 parts by weight of a resin component, 3 to 300 parts by weight of thermally expandable graphite, 3 to 200 parts by weight of an inorganic filler, and 20 to 200 parts by weight of a plasticizer. Consists of parts
The resin component contained in the thermally expandable resin composition comprises at least one of a chlorinated polyvinyl chloride resin and EPDM having a chlorine content in the range of 60 to 72% by weight,
The thermal expansion for a sash, wherein the thermal expansion resin composition layer and the thermoplastic resin composition layer are formed by co-extrusion using the thermal expansion resin composition and the thermoplastic resin composition, respectively. Multilayer frame material.   The thermally expandable resin composition is at least one selected from the group consisting of a thermal stabilizer, a lubricant, a processing aid, a pyrolytic foaming agent, an antioxidant, an antistatic agent, a pigment, a crosslinking agent, and a crosslinking accelerator. The thermally expansible multilayer frame material for sash of Claim 1 containing this.   The sash according to claim 1 or 2, wherein the thermoplastic resin composition layer comprises at least one selected from the group consisting of a polyvinyl chloride resin composition, a chlorinated polyvinyl chloride resin composition, and an EPDM resin composition. Thermally expandable multilayer frame material. The thermally expandable multilayer frame material for sash has a cavity in the longitudinal direction,
The thermally expandable multilayer frame material for a sash according to claim 3, wherein a part or all of the inner wall surface of the cavity is formed by the thermally expandable resin composition layer. The thermally expandable multilayer frame material for sash has a cavity in the longitudinal direction,
The thermally expandable multilayer frame material for sash according to claim 3 or 4, wherein a part or all of the outer wall surface of the thermally expandable multilayer frame material for sash is formed of the thermally expandable resin composition layer. The sash heat-expandable multilayer frame material has a window plate material support,
The thermally expandable multilayer frame material for sash according to any one of claims 3 to 5, wherein a part or all of an inner wall surface of the window plate support portion is formed of the thermally expandable resin composition layer. It has the thermally expansible multilayer frame material for sashes in any one of Claims 1-6, and the board | plate material for windows,
A fireproof sash comprising the thermally expandable multilayer frame material for a sash on an outer periphery of the window plate. A thermally expandable multilayer frame material for a sash according to any one of claims 1 to 6, an incombustible frame material, and a window plate material,
On the outer periphery of the window plate material, the non-combustible frame material is provided,
A fire-resistant sash in which the thermally expandable multilayer frame material for sash and the non-combustible frame material are bonded to each other.   The fire-resistant sash according to claim 8, wherein the thermally expandable resin composition layer of the thermally expandable multilayer frame material for sash and the non-combustible frame material are bonded to each other.

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