JP6200572B2 - Fireproof resin composition - Google Patents

Description

  The present invention relates to a refractory resin composition.

  Resin materials containing thermally expandable graphite have been proposed as resin materials imparted with fire resistance used in the construction field (Patent Documents 1 to 4).

  However, the refractory material using thermally expandable graphite begins to expand from the surface part where the temperature rises quickly in the event of a fire and forms a heat insulation layer on the surface. There was a problem of not expanding. Therefore, when viewed as a whole, the expansion efficiency is poor with respect to the amount of thermally expandable graphite, and the economy is inferior.

  In a refractory material using thermally expandable graphite, a means for achieving improvement in expansion efficiency, particularly improvement in internal expansion efficiency is required.

JP-A-9-227716 JP-A-9-227747 JP-A-10-95887 JP 2000-143941 A

  An object of the present invention is to provide a refractory resin composition having excellent expansion efficiency.

  The inventors of the present invention have made extensive studies to achieve the above object, and as a result, the refractory resin composition contains a predetermined amount of zinc compound and / or manganese compound, thereby solving the above problems. The present inventors have found that this can be done and have completed the present invention.

  The present invention includes the following aspects.

Item 1. In a refractory resin composition comprising a matrix component that is a resin, an elastomer, rubber, or a combination thereof, and thermally expandable graphite and an inorganic filler,
0.5 to 10 parts by weight with respect to 100 parts by weight of the thermally expandable graphite as a metal amount of zinc compound and / or 0 weight with respect to 100 parts by weight of the thermally expandable graphite as a metal amount of a manganese compound. More than 0.5 part by weight, a fireproof resin composition characterized by containing 0.5 part by weight or less.

  Item 2. Item 2. The fireproof resin composition according to item 1, comprising polyphosphate as the inorganic filler.

  Item 3. Item 3. The fire resistant resin composition according to Item 1 or 2, further comprising a phosphite.

  Item 4. Item 4. The fireproof resin composition according to any one of Items 1 to 3, further comprising a plasticizer.

  Item 5. The refractory resin composition according to claim 4, wherein the plasticizer is a phosphate plasticizer.

  Item 6. Item 6. The fireproof resin composition according to any one of Items 1 to 5, wherein the matrix component is a vinyl chloride resin.

  Item 7. Item 7. A fire-resistant resin molded article comprising the fire-resistant resin composition according to any one of items 1 to 6.

  Item 8. A joinery comprising the fire-resistant resin molded article according to Item 7.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the fireproof resin composition excellent in expansion efficiency.

It is a schematic front view which shows the fireproof window which provided the fireproof resin molding which consists of the fireproof resin composition of this invention in the sash frame.

  Embodiments of the present invention will be described below.

  The matrix component may be any of resin, elastomer, and rubber. The resin includes a thermoplastic resin and a thermosetting resin.

  Examples of the thermoplastic resin include, for example, polypropylene resin, polyethylene resin, poly (1-) butene resin, polypentene resin, ethylene-propylene copolymer, ethylene-butene copolymer resin, ethylene-4-methyl-1- Pentene copolymer resin, ethylene-vinyl acetate copolymer resin (EVA), polyolefin resin such as ethylene-acrylic acid copolymer, polystyrene resin, acrylonitrile-butadiene-styrene (ABS) resin, polycarbonate resin, polyphenylene ether resin, Examples include (meth) acrylic resins, polyamide resins, polyvinyl chloride resins (including chlorinated vinyl chloride resins), novolac resins, polyurethane resins, and polyisobutylene. Of these, polyolefin resins or polyvinyl chloride resins are preferred.

  Any of the above thermoplastic resins may be used after being crosslinked or modified within a range not impairing the fire resistance performance of the resin composition. The crosslinking method of the resin is not particularly limited, and examples thereof include a usual crosslinking method for thermoplastic resins, such as crosslinking using various crosslinking agents and peroxides, and crosslinking by electron beam irradiation.

  Examples of the thermosetting resin include epoxy resin, phenol resin, melamine resin, urea resin, unsaturated polyester resin, alkyd resin, polyurethane, thermosetting polyimide, and the like. Among these, an epoxy resin is preferable.

  The epoxy resin used in the present invention is not particularly limited, but is basically obtained by reacting a monomer having an epoxy group with a curing agent. Examples of the monomer having an epoxy group include monomers such as a bifunctional glycidyl ether type, a glycidyl ester type, and a polyfunctional glycidyl ether type.

  These monomers having an epoxy group may be used alone or in combination of two or more.

  As the curing agent, a polyaddition type or a catalyst type is used. Examples of the polyaddition type curing agent include polyamine, acid anhydride, polyphenol, and polymercaptan. Examples of the catalyst-type curing agent include tertiary amines, imidazoles, and Lewis acid complexes. The curing method of the epoxy resin is not particularly limited, and can be performed by a known method.

  Examples of elastomers include olefin elastomers (TPO), styrene elastomers, ester elastomers, amide elastomers, vinyl chloride elastomers, combinations thereof, and the like.

  Rubber materials include natural rubber, isoprene rubber, butadiene rubber, 1,2-polybutadiene rubber, styrene-butadiene rubber, chloroprene rubber, nitrile rubber, butyl rubber, chlorinated butyl rubber, ethylene-propylene rubber, ethylene-propylene diene rubber (EPDM). ), Rubber materials such as chlorosulfonated polyethylene, acrylic rubber, epichlorohydrin rubber, polyvulcanized rubber, non-vulcanized rubber, silicon rubber, fluorine rubber, and urethane rubber. Of these, butyl rubber is preferred.

  These synthetic resins and / or rubber substances can be used singly or in combination.

  Among these synthetic resins and / or rubber substances, a polyvinyl chloride resin is preferable from the viewpoint that many plasticizers can be contained and kneading efficiency is excellent. Further, from the viewpoint of excellent processability and economic efficiency, polyolefin resins such as ethylene-vinyl acetate copolymer resin (EVA) are also preferable.

  Thermally expandable graphite is a conventionally known substance that expands when heated, and powders such as natural scaly graphite, pyrolytic graphite and quiche graphite are mixed with inorganic acids such as concentrated sulfuric acid, nitric acid and selenic acid, concentrated nitric acid and perchloric acid , A graphite intercalation compound produced by treatment with a strong oxidant such as perchlorate, dichromate, dichromate, hydrogen peroxide, etc., while maintaining the layered structure of carbon It is a kind of compound.

  The heat-expandable graphite obtained by acid treatment as described above may be further neutralized with ammonia, an aliphatic lower amine, an alkali metal compound, an alkaline earth metal compound, or the like. Examples of commercial products of thermally expandable graphite include “CA-60S” manufactured by Nippon Kasei Co., Ltd., “GREP-EG” manufactured by Tosoh Corporation, “GRAFGUARD” manufactured by GRAFTECH, and the like.

  The larger the particle size (particle size) of the thermally expandable graphite, the greater the expansion performance and the better the fire resistance. However, the larger the particle size, the more difficult it is to disperse in the matrix, and the time for kneading is required. From the viewpoint of the expansion ratio, the particle size of the thermally expandable graphite is preferably 100 μm or more, more preferably 400 μm or more. The upper limit of the average particle diameter of the thermally expandable graphite is not particularly limited, but is preferably 1500 μm or less, and more preferably 1000 μm or less. The particle size can be controlled by using commercially available thermally expandable graphite classified by a predetermined sieve.

  The content of the thermally expandable graphite is not particularly limited, but is preferably 10 to 500 parts by weight with respect to 100 parts by weight of the matrix component, and more preferably 50 to 300 parts by weight with respect to 100 parts by weight of the matrix component. preferable. When the content is 10 parts by weight or more, a fire expansion performance that sufficiently fills a portion where a structure such as a sash is burned out is exhibited and the mechanical strength is maintained when the content is 500 parts by weight or less.

  When the expanded heat insulating layer is formed, the inorganic filler increases the heat capacity and suppresses heat transfer, and works as an aggregate to improve the strength of the expanded heat insulating layer. The inorganic filler is not particularly limited, and examples thereof include metal oxides such as alumina, titanium oxide, calcium oxide, magnesium oxide, iron oxide, tin oxide, antimony oxide, and ferrites; calcium hydroxide, magnesium hydroxide, hydroxide Water-containing inorganic substances such as aluminum and hydrotalcite; metal carbonates such as basic magnesium carbonate, calcium carbonate, magnesium carbonate, strontium carbonate, barium carbonate and the like.

  In addition to these, inorganic fillers include calcium salts such as calcium sulfate, gypsum fiber, calcium silicate; silica, diatomaceous earth, dosonite, barium sulfate, talc, clay, mica, montmorillonite, bentonite, activated clay, sepiolite. , Imogolite, sericite, glass fiber, glass beads, silica balun, aluminum nitride, boron nitride, silicon nitride, carbon black, graphite, carbon fiber, carbon balun, charcoal powder, various metal powders, potassium titanate, magnesium sulfate MOS ”(trade name), lead zirconate titanate, aluminum borate, molybdenum sulfide, silicon carbide, stainless steel fiber, zinc borate, various magnetic powders, slag fiber, fly ash, dehydrated sludge and the like. These inorganic fillers may be used alone or in combination of two or more.

  In one embodiment, the inorganic filler is selected from metal oxides, hydrous minerals, metal carbonates, silica, and combinations thereof. The hydrous inorganic substance contains an alkaline earth metal hydroxide.

  As the inorganic filler, a flame retardant compound (a flame retardant) such as a phosphorus compound may be added. Addition of the phosphorus compound increases the strength of the expanded heat insulating layer and improves the fireproof performance. The phosphorus compound is not particularly limited. For example, red phosphorus; various phosphate esters such as triphenyl phosphate, tricresyl phosphate (TCP), trixylenyl phosphate, cresyl diphenyl phosphate, xylenyl diphenyl phosphate; Examples thereof include metal phosphates such as sodium phosphate, potassium phosphate, and magnesium phosphate; compounds represented by the following chemical formula (1), and the like.

In the chemical formula (1), R ¹ and R ³ , hydrogen, a linear or branched alkyl group having 1 to 16 carbon atoms, or an aryl group having 6 to 16 carbon atoms is represented. R ² is a hydroxyl group having 1 to 16 carbon atoms.
A linear or branched alkyl group, a linear or branched alkoxyl group having 1 to 16 carbon atoms, an aryl group having 6 to 16 carbon atoms, or an aryloxy group having 6 to 16 carbon atoms.

  As red phosphorus, commercially available red phosphorus can be used, but from the viewpoint of safety such as moisture resistance and not spontaneously igniting during kneading, a material in which the surface of red phosphorus particles is coated with a resin is preferably used.

The compound represented by the chemical formula (1) is not particularly limited. For example, 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, phenylphosphine Examples include acid, diethylphenylphosphinic acid, diphenylphosphinic acid, bis (4-methoxyphenyl) phosphinic acid and the like. Among them, t-butylphosphonic acid is preferable in terms of high flame retardancy although it is expensive. The above phosphorus compounds may be used alone or in combination of two or more.

  Alternatively, it may be a salt of lower phosphoric acid such as primary phosphoric acid, secondary phosphoric acid, tertiary phosphoric acid, metaphosphoric acid, phosphorous acid, hypophosphorous acid, or the like. In this specification, a salt includes alkali metal salts such as sodium salt and potassium salt; alkaline earth metal salts such as magnesium salt and calcium salt; other metal salts such as aluminum salt; ammonium salt and the like.

  As a particle size of an inorganic filler, 0.5-200 micrometers is preferable, More preferably, it is 1-10 micrometers. When the amount of the inorganic filler added is small, the dispersibility greatly affects the performance, so that the particle size is preferably small, but if it is 0.5 μm or more, the dispersibility is good. When the addition amount is large, the viscosity of the resin composition increases and moldability decreases as the high filling progresses, but the viscosity of the resin composition can be decreased by increasing the particle size. Although a thing with a large diameter is preferable, the particle size of 100 micrometers or less is desirable at the point of the surface property of a molded object, and the mechanical physical property of a resin composition.

  In order to obtain a desired particle size, the aggregated inorganic filler can be finely divided, dispersed with a solvent or the like, and then controlled by charging, sieving, or the like.

  As the inorganic filler, for example, for aluminum hydroxide, “Hijilite H-31” (manufactured by Showa Denko) having a particle size of 18 μm, “B325” (manufactured by ALCOA) having a particle size of 25 μm, and calcium carbonate, Examples include 1.8 μm “Whiteon SB Red” (manufactured by Bihoku Powdered Industries Co., Ltd.), “BF300” (manufactured by Bihoku Powdered Industries Co., Ltd.) having a particle size of 8 μm, and the like.

  Although content of an inorganic filler is not specifically limited, It is preferable that it is 30-500 weight part with respect to 100 weight part of matrix components. When the content is 30 parts by weight or more, sufficient fireproof performance is obtained, and when it is 500 parts by weight or less, the mechanical strength is maintained. The content of the inorganic filler is more preferably 40 to 350 parts by weight.

  When the phosphorus compound is contained as the inorganic filler, the content of the phosphorus compound is not particularly limited, but is preferably 30 to 300 parts by weight with respect to 100 parts by weight of the matrix component. When the blending amount is 30 parts by weight or more, the effect of improving the strength of the expanded heat insulating layer is sufficient, and when it is 300 parts by weight or less, the mechanical strength is maintained. The content of the phosphorus compound is more preferably 40 to 250 parts by weight.

  In a preferred embodiment of the refractory resin composition of the present invention, the particle size ratio between the particle size of the thermally expandable graphite and the particle size of the inorganic filler is 1-1000. Preferably it is 3-300, More preferably, it is 5-50. By setting it as such a numerical range, it can knead | mix efficiently in a short time. If the particle size ratio is outside this range, the expanded graphite is not sufficiently dispersed in the matrix, which may cause problems such as surface contamination.

Moreover, in the preferable aspect of the refractory resin composition of this invention, content of the sum total of a thermally expansible graphite and an inorganic filler is 30 weight% or more, Preferably it is 50 weight% or more. The upper limit of the total content of the thermally expandable graphite and the inorganic filler is not particularly limited, but is 75% by weight or less, preferably 65% by weight or less. By setting it as such a numerical value range, the outstanding fire resistance can be expressed.

  In a preferred embodiment of the refractory resin composition of the present invention, the content of thermally expandable graphite is 15% by weight or more, preferably 20% by weight or more, particularly preferably 25% by weight or more. The upper limit of the content of the thermally expandable graphite is not particularly limited, but is 50% by weight or less and 40% by weight or less. By setting it as such a numerical value range, the outstanding fire resistance can be expressed.

  The refractory resin composition of the present invention has a zinc compound as a metal amount and a thermal expansion of 0.1 to 7.5 parts by weight with respect to 100 parts by weight of thermally expandable graphite, or a manganese compound as a metal amount. More than 0 parts by weight and 0.5 parts by weight or less with respect to 100 parts by weight of carbonaceous graphite.

  Examples of the zinc compound include zinc salts, oxides and hydroxides. Specific examples include zinc oxide (zinc white), zinc stearate, zinc borate, zinc chloride, zinc sulfide, zinc chromate, zinc phosphate, and zinc stannate, but are not limited thereto.

  Manganese compounds include manganese salts, oxides, hydroxides, and the like. Specific examples include manganese dioxide, manganese chloride, manganese sulfate, manganese nitrate, and potassium permanganate.

  (When the refractory resin composition of the present invention is produced, the zinc compound and / or the manganese compound contained in the raw materials and reaction reagents may be mixed unintentionally. ("Zinc compound" and "manganese compound" in the refractory resin composition refer to a zinc compound and a manganese compound contained in the refractory resin composition, including those that are not intentionally mixed.)

  A zinc compound is contained as a metal amount in an amount of 0.5 to 10 parts by weight with respect to 100 parts by weight of thermally expandable graphite. The content of the zinc compound is preferably 0.5 to 5 parts by weight, more preferably 1.0 to 3.0 parts by weight with respect to 100 parts by weight of the thermally expandable graphite. The zinc compound may be contained in an amount of 0.1 to 7.5 parts by weight with respect to 100 parts by weight of thermally expandable graphite as a metal amount.

  The manganese compound is contained in an amount of more than 0 parts by weight and 0.5 parts by weight or less with respect to 100 parts by weight of thermally expandable graphite as a metal amount. The content of the manganese compound is preferably 0.3 parts by weight or less with respect to 100 parts by weight of thermally expandable graphite. The content of the manganese compound may be equal to or greater than the measurement limit value. The lower limit of the manganese compound content is more than 0 parts by weight, preferably 0.01 parts by weight or more, and more preferably 0.05 parts by weight or more with respect to 100 parts by weight of the thermally expandable graphite. If the amount exceeds the specified amount, the residual shape retention force during combustion will be impaired.

  The content of the zinc compound and / or manganese compound in the refractory resin composition as a metal amount is determined by subjecting a refractory resin molded body (for example, a sheet) made of the refractory resin composition to heating-type sealed acid decomposition using a microwave. After performing ionization, it can be quantified by high frequency inductively coupled plasma emission spectroscopy (ICP emission spectroscopy).

  The content of thermally expandable graphite contained in the refractory resin composition is determined by dissolving the sample in an organic solvent, water, etc., extracting insoluble components including expanded graphite, and then ashing at a predetermined temperature. Measurement is possible due to the difference in the compound weight.

In the refractory resin composition, the zinc compound is used as the amount of metal, 0.1 to 7.5 parts by weight with respect to 100 parts by weight of the thermally expandable graphite, or the manganese compound is used as the metal amount, and the thermally expandable graphite 100 By setting it to more than 0 parts by weight and 0.5 parts by weight or less with respect to parts by weight, it is possible to achieve an improvement in expansion efficiency, particularly an improvement in the internal expansion efficiency. If the amount exceeds the specified amount, the residual shape retention force during combustion will be impaired.

  The fireproof resin composition of the present invention may further contain a polyphosphate.

  The polyphosphate functions as a flame retardant and includes ammonium polyphosphate, melamine polyphosphate, melam polyphosphate, and the like. Commercially available products of ammonium polyphosphate include “AP422” and “AP462” manufactured by Clariant, “Sumisafe P” manufactured by Sumitomo Chemical Co., Ltd., and “Terrage C60” manufactured by Chisso.

A preferred ammonium polyphosphate is a surface-coated ammonium polyphosphate (also referred to as a coated ammonium polyphosphate). Of the coated ammonium polyphosphates, melamine-coated ammonium polyphosphate surface-coated with melamine is disclosed in JP-A-9-286875. JP-A-2000-63562 describes a silane-coated ammonium polyphosphate surface-coated with silane. The melamine-coated ammonium polyphosphate is composed of (a) melamine-coated ammonium polyphosphate obtained by adding and / or adhering melamine to the surface of powdered ammonium polyphosphate particles, and (b) melamine molecules present in the coating layer of the melamine-coated ammonium polyphosphate particles. And / or (c) powdered ammonium polyphosphate or the melamine in which the particle surface is crosslinked with an active hydrogen possessed by an amino group therein and a compound having a functional group capable of reacting with the active hydrogen This is a coated ammonium polyphosphate in which the surface of the coated ammonium polyphosphate particles is coated with a thermosetting resin. Commercially available melamine-coated ammonium polyphosphate particles include, for example, “AP462” manufactured by Clariant, “FR CROS 484” manufactured by Budenheim Iberica, and “FR”.
CROS 487 "and the like. Examples of commercially available silane-coated ammonium polyphosphate particles include “FR CROS 486” manufactured by Budenheim Iberica.

  The average particle diameter of the coated ammonium polyphosphate is preferably 15 to 35 μm. The average particle diameter of the coated ammonium polyphosphate can be measured by laser diffraction particle size distribution measurement.

The fireproof resin composition of the present invention may further contain a plasticizer. The plasticizer is added in order to adjust the melt viscosity of the matrix component, particularly the thermoplastic resin. The plasticizer can also be called a softener. As the plasticizer, one or more plasticizers exemplified below may be used in combination:
Di-2-ethylhexyl phthalate (DOP), di-n-octyl phthalate, diisononyl phthalate (DINP), diisodecyl phthalate (DIDP), diundecyl phthalate (DUP), or a higher or mixed alcohol having about 10 to 13 carbon atoms Phthalate plasticizers such as phthalates
Aliphatic dibasic acids such as di-2-ethylhexyl adipate, di-n-octyl adipate, di-n-decyl adipate, diisodecyl adipate, di-2-ethylhexyl azelate, dibutyl sebacate, di-2-ethylhexyl sebacate Ester plasticizers;
Trimerits such as tri-2-ethylhexyl trimellitate (TOTM), tri-n-octyl trimellitate, tridecyl trimellitate, triisodecyl trimellitate, di-n-octyl-n-decyl trimellitate Acid ester plasticizers;
Adipate plasticizers such as di-2-ethylhexyl adipate (DOA) and diisodecyl adipate (DIDA);
Sebacic acid ester plasticizers such as dibutyl sebacate (DBS) and di-2-ethylhexyl sebacate (DOS);
Tributyl phosphate, trioctyl phosphate, octyl diphenyl phosphate, tributoxyethyl phosphate, trichloroethyl phosphate, tris (2-chloropropyl) phosphate, tris (2,3-dichloropropyl) phosphate, tris (2,3-dibromopropyl) phosphate Phosphate ester plasticizers such as tris (bromochloropropyl) phosphate, bis (2,3-dibromopropyl) -2,3-dichloropropyl phosphate, bis (chloropropyl) monooctyl phosphate;
Biphenyltetracarboxylic acid tetraalkyl ester plasticizers such as 2,3,3 ′, 4′-biphenyltetracarboxylic acid tetraheptyl ester;
Polyester polymer plasticizer;
Epoxy plasticizers such as epoxidized soybean oil, epoxidized linseed oil, epoxidized cottonseed oil, and liquid epoxy resin;
Chlorinated paraffin;
Chlorinated fatty acid esters such as alkyl pentastearate; and process oils such as paraffinic process oil, naphthenic process oil, and aromatic process oil.

  The content of the plasticizer in the refractory resin composition is not particularly limited, but is preferably in the range of 25 to 100 parts by weight with respect to 100 parts by weight of the thermoplastic resin.

  In addition, a heat stabilizer, a lubricant, a processing aid, a pyrolytic foaming agent, an antioxidant, an antistatic agent, a pigment, and the like are added to the fireproof resin composition of the present invention as long as the physical properties are not impaired. May be.

  Examples of the heat stabilizer include lead heat stabilizers such as tribasic lead sulfate, tribasic lead sulfite, dibasic lead phosphite, lead stearate, dibasic lead stearate; organotin mercapto, organic Organotin heat stabilizers such as tin malate, organotin laurate, dibutyltin malate; metal soap heat stabilizers such as zinc stearate and calcium stearate; these may be used alone or in combination of two or more You may use together.

  Examples of the lubricant include waxes such as polyethylene, paraffin, and montanic acid; various ester waxes; organic acids such as stearic acid and ricinoleic acid; organic alcohols such as stearyl alcohol; and amide compounds such as dimethylbisamide. These may be used alone or in combination of two or more.

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

  Examples of the pyrolytic foaming agent include azodicarbonamide (ADCA), dinitrosopentamethylenetetramine (DPT), p, p-oxybisbenzenesulfonylhydrazide (OBSH), azobisisobutyronitrile (AIBN), and the like. Can be mentioned.

  The refractory resin composition of the present invention can be obtained by a melt extrusion with an extruder such as a single screw extruder or a twin screw extruder according to a conventional method. The melting temperature varies depending on the matrix component and is not particularly limited. For example, in the case of a polyvinyl chloride resin, the melting temperature is 130 to 170 ° C.

The fireproof resin composition or fireproof resin molded article of the present invention imparts fire resistance to structures such as windows, shojis, doors (that is, doors), doors, brans, and bams; ships; and structures such as elevators. Can be used for. Since the fireproof resin composition of the present invention is excellent in moldability, it is possible to easily obtain a modified molded body adapted to the complicated shape of the structure. FIG. 1 is an example in which a fireproof resin molded body 4 of the present invention is applied to a sash frame of a window 1 as a fitting. In this example, the sash frame has two inner frames 2 and one outer frame 3 surrounding the inner frame 2, and the inner frame 2 and the outer frame 3 along each side of the frame main body 2. And the fireproof resin molding 3 is attached to the inside of the outer frame 3. Thus, fire resistance can be imparted to the window 1 by providing the fire resistant resin molded body 3 of the present invention.

Moreover, since the fireproof resin composition of this invention is excellent in the expansibility in an inside, it can be used as an intermediate | middle layer of the fireproof material which consists of a laminated body. Specifically, a refractory material obtained by laminating the refractory resin composition of the present invention between a non-combustible material layer on the front surface and a non-combustible material layer on the back surface (for example, Japanese Patent No. 5799990)
Is mentioned.

  Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited thereto.

1. Preparation of fireproof sheet [Example 1]
In the compounding amounts shown in Table 1, 100 parts by weight of polyvinyl chloride as a synthetic resin, 100 parts by weight of diisodecyl phthalate (DIDP) as a plasticizer, 100 parts by weight of thermally expandable graphite (“GREP-EG” manufactured by Tosoh Corporation), inorganic After mixing 100 parts by weight of calcium carbonate and 0.1 parts by weight of manganese dioxide as a filler with a kneader, the mixture is formed into a sheet with a calender roll, and a fire-resistant sheet as a 1.5 mm fire-resistant resin molded body. Got.
[Examples 2 to 14, Comparative Example 1]
Also in Examples 2 to 14 and Comparative Example 1, the components were mixed and extruded at the blending amounts shown in Tables 1 to 3 to obtain fireproof sheets.

2. Measurement of expansion ratio A test piece (length 100 mm, width 100 mm, thickness 1.5 mm) prepared from the obtained fireproof sheet was supplied to an electric furnace and heated at 600 ° C. for 30 minutes, and then the thickness of the test piece was determined. Measured, and (thickness of the test piece after heating) / (thickness of the test piece before heating) was calculated as an expansion ratio.

  The fireproof sheets of Examples 1 to 14 are excellent in expansibility.

Claims (5)

A joinery comprising a fire-resistant resin molded body made of a fire-resistant resin composition,
The fireproof resin composition is
Contains a polyvinyl chloride resin, a thermally expandable graphite and an inorganic filler as a matrix component ,
The zinc compound, as a metal content, 0.1 to 7.5 parts by weight with respect to the thermally expandable graphite 100 parts by weight, and / or the manganese compound, as a metal content, to the heat-expandable graphite 100 parts by weight Over 0 parts by weight and 0.5 parts by weight or less,
The zinc compound contains at least one selected from the group consisting of zinc oxide, zinc stearate, zinc borate, zinc chloride, zinc sulfide, zinc chromate, zinc phosphate, zinc stannate and metal zinc. Characterize
Joinery . The joinery according to claim 1, wherein the inorganic filler includes polyphosphate. The joinery according to claim 1 or 2, wherein the refractory resin composition further contains a phosphite. The joinery according to any one of claims 1 to 3, wherein the refractory resin composition further includes a plasticizer. The joinery according to claim 4, wherein the plasticizer includes a phosphate plasticizer.