JPH04136014A - Foaming resin composition, foam, and flame-retardant structure - Google Patents

Abstract

PURPOSE:To prepare the title compsn. which is lowly viscous and excellent in processability and gives a foam excellent in flame retardance and strengths by compounding an aq. soln. of a saccharide, a specific polyester polyol, a catalyst, and an isocyanate compd. as the essential components. CONSTITUTION:An acid component contg. a compd. having a carboxylic anhydride group and at least one carboxyl group (e.g. trimellitic anhydride), a satd. dibasic acid (e.g. phthalic acid), and, if necessary, an alpha, beta-ethylenically unsatd. dibasic acid is reacted with an alcohol component contg. 5-30 equivalent % (based on the whole alcohol component) tris(2-hydroxyethyl) isocyanurate to give a polyester polyol, which is compounded with an aq. soln. and/or a slurry of a saccharide, a catalyst, an isocyanate compd., and, if necessary, a foam stabilizer, a flame retardant and/or a blowing agent, etc., to give the title compsn. suitable for a building material, etc.

Description

Detailed Description of the Invention (Industrial Application Field) The invention relates to a foaming resin composition that produces a foam with excellent flame retardant properties, strength, etc., a foam obtained from this composition, and a flame retardant structure. Regarding the body.

(Prior art) Recently, flame retardant requirements for building materials, especially residential exterior wall materials, have become more severe, and a model box test No. 1372 has been added to the Ministry of Construction notification No. 1231 semi-flammability test. A thought that leads to. This Ministry of Construction Notification No. 1372 model box test is a test specimen that satisfies and exceeds the regulation J value of afterflame, fan time area 9, and smoke generation coefficient in the same No. 1231 quasi-noncombustible test.
It is extremely difficult to judge the calorific value during combustion and the shape after combustion.

Conventional isocyanurate foams made from industrial polyol as a raw material and have cyanurate rings (polyurethane foam C-wraps -8), phenol foams, foams made from carbohydrates as raw materials, etc. is being scrutinized.

(Problem to be Solved by the Invention) The body of the next beak was made using a conventional incyanurate foam having an iso7 anurate ring made from an industrial polyol as a raw material. Since the amount is large, it is difficult to pass the No. 1372 vague box test of Mae = 1.

10,000 Although beak remains made of phenol foam have little change in shape after combustion, they have the disadvantage of a long afterflame time after combustion. When switching manufacturing equipment that uses VC for molding incyanurate foam having incyanurate rings to molding phenol foam, use the heating device during and after foaming to heat for a long time at a high temperature. I had to change to a device that could do it, and I had to replace it with a new one. Using this device to print phenol foam books is extremely difficult to work with. Also,
Phenol foam has poor contact with steel plates.

There are also problems in terms of physical properties, such as brittleness and high water absorption. On the other hand, fC
The W4 body uses an incyanurate foam made from industrial polyol, and although its flammability has improved somewhat compared to this structure, it cannot be said to be sufficient, and it also has a structure that has improved flame retardancy. As a result, adverse effects such as a decrease in strength (bending strength) and an increase in water absorption are emerging. An attempt to improve the strength and '$L water 4 is to reduce the water content in carbohydrates.

In this case, when the moisture content becomes 201t* or less, the viscosity becomes extremely high717. When taken orally, it crystallizes and becomes paste-like, resulting in significant problems in handling and workability, and when a 9-foaming machine is used, problems such as inability to foam or clogging in the nozzle occur.

The present invention has been made in view of such problems, and
A foaming resin composition that has a working viscosity of 1f (m fat viscosity) similar to that of polyurethane, has excellent flame retardancy, has high strength 1 (high bending strength), and provides a foam with low water absorption. The purpose is to provide foam and beak bodies.

(Next Means for Solving Problems 41) The present invention provides at least one carbon anhydride group or/carboxylic dispersion group in an aqueous solution and/or slurry carbon:lk anhydride group. If necessary, the compound containing the saturated dibasic acid may be further added with 5 to 3 (1,1% A polyester polyol obtained by reacting an alcohol component containing tris (2- and droxyethyl) in cyanurate, and a reaction catalyst.

Incyanate compound and optionally 41 foaming agent.

A foaming resin composition containing a flame retardant and/or a foaming agent, a foam obtained from this foaming resin composition, and a plate or sheet on at least one side of the foam obtained from the foaming resin composition. Concerning the purchase of corpses.

The 7X bath solution and/or slurry used in the present invention includes monosaccharides such as fructose, pudoli! (glucose), xylose.

Mannose, 2*fAe, such as maltose, lactose, sorbitol, mannitol, arabitol, xylit, methyl glycoside, etc. An aqueous solution containing one or more glucosides etc. and dissolving them in water.

It is a slurry made by dispersing these in water, or a mixture of the water bath liquid and the slurry. Examples of commercially available products include Egg Cornstarch Stock % Formula % Rise Sun Craft 550 from Kogyo Co., Ltd.

Oji Cornstarch Co., Ltd.'s Rip HC is an aqueous solution of fructose, glucose and other sugars, and Sanmatsu Kogyo Co., Ltd.'s Suncraft 550 TFI is an aqueous solution of fructose, grape sugar and oligosaccharides.

In addition, Lepros 8F-A (aqueous solution of fructose) manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd., Lepros 20K (Solid Towa Kasei Kogyo Co., Ltd.) D-70, Turupinto W-70 (aqueous solution of sorbitol), ), Mannit P (
(solid), alcohol such as Mannitol S (solid), xylose XL (solid), multi-materials (Kangendokugakensui@liquid) P〇-quality phase (water bath liquid of Kanken starch powder saccharide).

Crysta (glucose, solid) manufactured by Sanmatsu Kogyo Co., Ltd.

L()-85 (glucose water bath g;!L), Nissin Nohaku Kogyo Co., Ltd.'s Shiyotong, etc., are commercially available in solid form, or you can use them as an aqueous solution and/or slurry. Particularly preferred are water bath solutions and/or slurries of molasses, guac, isomerhatang, nruvit, xylit, or mixtures thereof.

There is no particular restriction on the water content in the water bath liquid and/or slurry, but it is preferably from 5 to 25]. When it exceeds 25% by weight, the strength of the foam decreases, and when it becomes less than 5% by weight, the viscosity tends to increase and workability tends to decrease.

The polyester polyol used in the present invention refers to a compound having at least one carboxylic anhydride group or carboxylic acid group on the carboxylic anhydride group, a saturated dibasic acid, or, if necessary, α,β-ethylene Tris(2-hydroquinethyl)in cyanurate 'c'tr formula expressed as 5 to 30 equivalents of the acid component 2 containing the sexually unsaturated dibasic acid and the alcohol component. % Obtained by diluting the alcohol component by a conventional method.

Examples of compounds having at least one carboxylic anhydride group or carboxylic acid group in Itg of the carboxylic anhydride group include trimellitic anhydride, pyromellitic anhydride, benzophenone-2,3,2,'3'-tetra Carboxylic dianhydride, 2,3.6.7-naphthalenetetracarboxylic dianhydride, 3. a'4.4'-diphenyltetracarboxylic dianhydride and the like are used.

As the saturated dibasic acid, phthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, isophthalic acid, terephthalic acid, adipine acid, sepanoic acid, etc. are used. Maleic acid is used as the α, menoethylenic unsaturated dibasic acid if necessary.

Acid, Tsuma/L! Methaconic acid, ntraconic acid, etc. are used.

As alcohol components, 1ljJ VC ethylene glycol, propylene glycol, diethylene glycol, tris(2-hydroquinethyl)in cyanurate,
1.3-propenediol, neopentyl glycol,
1.3-butanediol, hexamethylene glycol,
1,6-hexanediol, glycerin, trimethylolethane, trimethylolpropane, pentaerythritol, etc. are used.

The molecular weight of the polyester polyol is not particularly limited, but is preferably in the range of 200 to 4,000, particularly 200 to 10
A range of 00 is preferred.

As the molecular weight of the polyester polyol increases, its compatibility with carbohydrates decreases, resulting in a decrease in fluidity and a tendency to become denser.

Especially the acid value of polyester polyol is i! Although there is no limit to +1, in order to obtain a uniform foam and maintain a constant foaming rate, it is preferable that the acid value be 10 or less, and even more preferable that the acid value be 5 or less.

By reducing the polyester polyol, properties such as increasing the strength of the foam and reducing the water absorption rate of the package can be improved without increasing the smoke coefficient or combustion temperature. .

In addition, as a reaction catalyst in the present invention, dibutyl tin dilaurate, dibutyl tin octoate% stannous content rm
, triethylamine, triethylenediamine, triethanolamine, 2-dimethylamino-2-methyl-
Amine compounds such as 1-propatur and 2-amino-2-methyl-1-propatol, and organic metals such as cobalt naphthenate, calcium aphthenate, copper naphthenate, mankane naphthenate, and dibutyltin dilaurate are used.

As the incyanate compound in the present invention.

Particularly, but not limited to, monoisonic atom compounds such as, but not limited to, phenyl isocyanate, tolylene diisocyanate, hexamethylene diisocyanate.

Diisocyanate compounds such as naphthalene diisocyanate, inofocyanate, diphenylmethane-4,4'-diiso/anate, halafenine/diincyanate, triincyanate compounds such as triphenylmethane-44, '4''-triisocyanate; NCO wood end prepolymers derived from these isocyanates, which are low-molecular weight or high-molecular-weight polymers, can be used for some time.

Silicone polymers are used as the foam stabilizer used as needed in this invention #4.1 L-520, L-540, L-5340゜L-535 manufactured by Nippon Unicar Co., Ltd.
0, L-5410, L-5430, Dow Corning Co., Ltd. 190, 191, 193° Manufactured by Rate Silicon Co., Ltd. 5) 1-193. sF'2931.5H2933,
5H-190, 5RX298 etc.

In the present invention, flame retardants that may be used as needed include tris(2-chloroethyl) phosphate, tris(2-e70propyl) phosphate, tetraminated paraffin, and hexabromobenzene.

Asahi Denka Co., Ltd. & FC-450, c-33o.

FL-500, Daihachi Chemical Co., Ltd. C)l, -104° Dainippon Ink RF-420, RI"-1020° -660, RN-720, Mobil Chemical Co., Ltd. V
ircol g 2, Stouffer Chemical Co., Ltd. (O-/l/6. UCC Co., Ltd. gNiax fLo-350)
゜Kasei Upjohn Shajuku Isonol 36. , organic and refueling agents such as F-230 manufactured by F-Lin Co., Ltd., antimony trioxide,
Aluminum hydroxide, hydrated magnesia.

silicon oxide, inorganic flame retardants such as glass, etc.
These can be used alone or in combination.

In addition, in order to improve workability such as the viscosity of the composition and to create a foam with a high expansion ratio, a low boiling point solvent such as monofluorotrichloromethane or trifluorotrichloroethane may be used as a foaming agent as necessary. It is also possible to use one history. Commercially available products include Freon 11 (boiling point 218°C), 7V, t711 manufactured by Mitsui Dubo/Fluorochemical Co., Ltd.
3 (astigmatism 47.6℃) etc.

In the present invention, in order to improve the strength e1m of the foam, we use inorganic fibers such as glass milled fibers and glass fibers, organic N1 fibers such as nylon and vinylon, etc. With the addition of Usui, there are 11! It is also possible to do so.

Although a foam can be obtained using the collapsed fat composition for foamed C packaging according to the present invention, a next-fermented body can be obtained by equipping the awn with this foam. When building a structure, a plate or sheet is provided on at least one side of the foam. Examples of this plate or sheet include aluminum kraft paper, aluminum foil, metal foil such as copper foil, aluminum asbestos sheet, and wood wool cement board.

Metal plates such as iron plates, steel plates, stainless steel plates, aluminum plates, copper plates, slate plates, calcium silicate plates.

Inorganic noncombustible boards such as gypsum board, cement board, glass [8 reinforced cement board, etc., and flame-retardant or noncombustible boards or sheets such as glass fiber reinforced plastics (F⇠P) boards are preferred.

These combustible or noncombustible plates or sheets are
There is no harm in painting it for reasons such as preventing corrosion. It is necessary to carefully consider the material and the thickness of the coating film to avoid deteriorating the properties of the paint used, but if the coating film is thin, there is no limit to the material Commercially available colored iron plates can also be conveniently used as sufficiently nonflammable plates.

There are no particular restrictions on the blending ratio of the present invention (L) 1@
Quality aqueous solution and/or slurry + J -50 to 200 weight 1
Part b Polyester polyol 5-200C) Reaction catalyst 0.1-6d) Isocyanate compound
50-200e) Separate 11SI4J (selective) 0.1-5
f) Flame retardant (selective) 0.1-1-1O0 (Blowing agent (selective) Preferably used in a ratio of 5 to 150 (10 to 150 parts by weight of aqueous solution and/or slurry of 11 sugars) (b) Polyester polyol 10-100 (C
1 Reaction catalyst 0.5-4 (d) Incyanate compound 50-150+el Foam stabilizer (selective) 0.5-4 1 part (f) Flame retardant Os selective)
5~50ig) From, package★lj (selective)
It is even more preferable to use it in one cycle at a ratio of 5 to 100. Due to workability, 9 For example, (a), fb),
(c), ie), with a mixture of tfl and fgl (
Prepare d) and mix both.

It is also possible to react and foam. Although the reaction temperature cannot be controlled, it is preferably lO~50°C, and the rotational speed of the stirrer during mixing is also particularly i! Not in the +1 limit, but 1,000 to 7
．． OOO revolutions/minute is preferred. When molding a foam or structure, it is preferable to use a mold, although there is no limit to 9%.9 For example, a mold with an open top and bottom is used, and a flame retardant or noncombustible plate is placed on the bottom surface of the mold. Or place the sheet and mold at a temperature of 30°C to 60°C, which is preferable to obtain a uniform foam.
Warm it up.

Next, stir and mix the ingredients from the previous step and pour them into the mold. Then, an upper mold equipped with a combustible or non-combustible plate or sheet and heated to a temperature of 30°C to 60°C, which is preferable to obtain a uniform foam, is placed with the side of the temporary or sheet facing the solution mixture. Place and tighten the mold.

By foaming, it is possible to create a structure in which the foam and the combustible or non-combustible plate or sheet are in close contact with each other. In this case, can the flame-retardant or noncombustible sheet be provided on one side or both sides of the foam?

It is preferable to have a sandwich structure on both sides in order to improve the combustibility. In this case, the flame-retardant or noncombustible plates or sheets provided on both sides of the foam may be of the same type or may be a combination of different types.

(Implementation row) The present invention will be described in detail.

Implementation row 1 Anhydrous Trimerit Ill! 4 parts by weight of 3a, 49.8 parts by weight of terephthalic acid, 174 parts by weight of phthalic anhydride, 24.8 parts by weight of ethylene glycol, tris(2-hydroxyethyl) in cyanurate (Nissan Chemical Industries, Ltd., trade name: THE I C) s Put 2.21 L parts, 1 part of diethylene glycol 74.2 parts, and 1 part of dibutyltin laurate 0.15 into four flasks and heat at 210°C for 20 minutes.
A polyester polyol was obtained by reacting for 9 hours.

311 parts by weight of Conopolyester polyol, 18.5 parts by weight of flame retardant tris(2-10 loethyl) phosphate, Si+) cone foam stabilizer (product name 1 manufactured by Tau Corning Co., Ltd.)
i Foam wound 190) 1.01 parts, triethanolamine 1
．． Freon 11 (Mitsui DuPont Fluorochemical Company friend product name) was added while keeping the solution containing 531 parts of the mixture at 20°C.
Add 18 parts by weight and mix to obtain solution A.

Separately, 89 parts by weight of liquid, 11 parts by weight of water, and 2 parts by weight of triethanolamine were mixed to prepare solution B.

70 parts by weight of solution A and 880 parts by weight of solution were mixed, and 150 parts of diphenylmethane diisocyanate (trade name Millionate MR-100, manufactured by Nippon Polyurethane Co., Ltd.) was added to this mixture.
Mix the weight parts and mix with a stirrer equipped with a turbine blade.
The mixture was stirred and mixed at 0 rotations/min for 5 seconds and poured into a wooden mold (220 x 220 x height 15 =) with an open top and bottom kept at 40°C, and a tomogami mold kept at 40°C placed on it. The mold was tightened. After 10 minutes, the mold was demolded to obtain a foam (thickness: 15 aoi). The density i of this foam is 0,0326
/aII', bending strength d 4.3 kg/cm',
I was disappointed with the water absorption rate Fi2.

A wooden mold with an open top and a bottom (inner volume 220 (IBX)
220m x 156) with a color iron plate (thickness 0.
27 am) and warm the mold to 40°C.

To 70 parts by weight of solution A, 880 parts by weight of acid solution and 150 parts by weight of diphenylmethane diisocyanate (trade name: Millionate M-100, manufactured by Nippon Polyurethane Co., Ltd.) were added, and the mixture was stirred for 5 seconds at 000 rpm on a stirring rock with turbine blades. The mixture was mixed and poured into the above-mentioned mold. Aluminum kraft paper was pasted on the upper surface of the mold and heated to 40°C. A skin-covered mold was placed with the aluminum kraft paper facing the solution mixture and the mold was clamped.

After 10 minutes, the mold was removed to obtain a flame-retardant thin structure in which a colored iron plate (thickness: 0.27 m) was adhered to the surface of the foam (thickness: 15 cm), and aluminum kraft paper was adhered to the back surface. The density of the foam that is the core material of this structure is uO, 0349 / country ζ bending strength is 3
．． 8 kg/Qll'', the water absorption rate is 2 cm, and it is a foam with a uniform and fine cell beak structure, and it is comparable to conventional foams in terms of bending strength and water absorption rate. Table IK shows the results of a nonflammability test based on Ministry of Construction Notification No. 1231 using this structure.As is clear from Table 1, this! Coefficient, tj41 [Coefficient.

It is an extremely good friend in every aspect of fan degree time area.

Example row 2 Trimellitic anhydride 3 & 431 parts by weight, terephthalic acid 5
0 parts by weight, 3 parts by weight of Adipit 9F, 42 parts by weight of neopentyl glycol, tris(2-hydroxyethyl) isocyanate (trade name: THEIC, manufactured by Nippon Chemical Co., Ltd.)
) 512 parts by weight, diethylene glycol 74.2 parts by weight, dibutyltinlaure) 0.5j: Place the four parts in a flask at 210°C.

A polyester polyol was obtained by reacting for 25 hours.

31 Jj parts of this polyester polyol, 1 & 5 parts by weight of flame retardant tris(2-chloroethyl) phosphate,
Silicone foam stabilizer (product name: Foam stabilizer 1 manufactured by Dow Corning)
90) Freon 11 was added to a solution containing 1.0 parts by weight and 1.5 parts by weight of triethanolamine while keeping it at 20°C.
(Product name manufactured by DuPont Mitsui Fluorochemical Co., Ltd.) 181ff
Part i was added and mixed to obtain bath liquid C.

Bath liquid C 70 parts by weight and fruit, 7[! 880 parts by weight of the solution used in 1EHJ1, diphenylmethane diisonate (trade name: Millionate MFL-100, manufactured by Nippon Polyurethane Co., Ltd.)
) and stirred and mixed for 5 seconds at 600 rpm with a stirrer equipped with turbine blades to obtain the following IpH.
In the same manner as in 1, a structure was obtained in which a colored iron plate was adhered to the surface of a foam (thickness: 15 m) and aluminum kraft paper was adhered to the back surface.

The density of this foam is 0.035 g/ao", the bending strength is 4.0 ks/ai", and the foam has a uniform and fine cell structure, and has higher compressive strength than conventional foam. , which was comparable in terms of water absorption. Table 1 shows the results of a nonflammability test conducted using this structure in accordance with Ministry of Construction Notification No. 1231. As is clear from Table 1, this structure was excellent in terms of external appearance after combustion, afterflame 1 smoke generation coefficient, fan degree coefficient, and fan degree time area.

#1 Add 100 parts by weight of ethylene glycol and 0.2 parts by weight of dibutyl dilaurate to 1:1 part of 200J of polyethylene terephthalate chips (5IK-ABF flakes PET manufactured by I% Yasu Co., Ltd.) in a four-hole flask at 180°C.
The mixture was reacted for 3 hours to obtain a polyester polyol.

36 parts by weight of Conopolyester polyol, Tris (2-
18.5 parts by weight of silicone foam stabilizer (trade name Foam Stabilizer 190 manufactured by Dow Corning)
) and 1.5 parts by weight of triethanolamine were mixed, and then, while keeping the solution at 20°C, 16 parts by weight of Freon 11 (trade name, manufactured by DuPont Mitsui Fluorochemical Co., Ltd.) was added and mixed. A solution was obtained.

Solution D80 heavy portion, solution used in Example 1 8701 amount M
, 150 parts by weight of diphenylmethane diisocyanate (trade name: Millionate MR-100, manufactured by Nippon Polyurethane Co., Ltd.) were mixed and stirred and mixed for 5 seconds at 1,000 rpm using a stirrer equipped with a turbine blade. A colored iron plate was attached to the surface of the body (thickness δ15aa) and aluminum kraft paper was attached to the back side to obtain a preserved corpse.

This foam has an ffi& of 0.0346/am', a bending strength of 1.6 kG, and a low water absorption coefficient of 5, and has a uniform and fine cell #1 structure. Implementation row 2
It has less bending strength than foam. Table 1K shows the results of a nonflammability test conducted using this structure based on Ministry of Construction Notification No. 1231.

Ratio S Example 2 1.5 parts by weight of triethanolamine was added to 75 parts of fruit and 11 parts of water and mixed well to obtain solution E.

80 parts by weight of diphenylmethane diisocyanate (trade name Millionate M-100, manufactured by Nippon Polyurethane Co., Ltd.) and a silicone foam stabilizer (trade name Foam Stabilizer 19, manufactured by Dow Corning Co., Ltd.)
0) 1.0 parts by weight of tris(2-chloroethyl)phosphny)'1201i were added and mixed to form a solution Ffi.

Add 100 parts by weight of solution F to 150 parts by weight of bath liquid E, stir and mix for 5 seconds at 1000 m/min using a stirrer equipped with a turbine blade. ) color iron plate on the surface.

The structure was made with aluminum kraft paper glued to the back.

In the case of Kono, the density of the foam is #td O, 033g/cm3.
It is a foam with a bending strength of 0.7 kg/am" and has a uniform and fine cell structure. Also, using this structure, a semi-flammability test was conducted based on Ministry of Construction Notification No. 1231. The results are shown in Table 1.As is clear from Table 1, the appearance shape after combustion, the smoke emission coefficient, and the smoke emission coefficient after 5 minutes compared to the FC411 structure using isocyanurate foam or phenol foam for the 1s bodies in this comparison column. Although the exhaust temperature has improved in various respects, the basic properties required for structures, such as a decrease in bending strength and an increase in water absorption, have deteriorated.

Comparative Example 3 Heteroform 28264 (Hooker Inc. ILfj!J
All, Product Name) 21.1 Heavy Responsibility Department, Heteroform 29
696 (Hunker company back polyol, product name) 23.5
Parts by weight, 1 part by weight of DC-193 (foam stabilizer manufactured by Dow Corning, trade name), 1.421 parts by weight of Polycat 41 (catalyst manufactured by Sun-Abond, trade name).

1 part of Freon 11 (trade name, manufactured by Duhon Fluorochemical Co., Ltd.) was mixed with 1 part of Freon 11 (trade name, manufactured by Duhon Fluorochemical Co., Ltd.) and applied to a 9-m plate, and Innate 580 (isocyanate compound manufactured by Upjohn Co., Ltd.) was mixed.

Product name) 101m! Add part E and stir for 5 seconds at 4000 rpm using a stirrer with turbine blades to mix.
)l! In the same manner as 114J1, a structure was obtained in which a colored iron plate was adhered to the surface of incyanurate foam (thickness: 15 mm) and aluminum kraft paper was adhered to the back surface. In this case, the density of the 9 foam is 0.035 g/cm" and the bending strength is Z4 kg/
I missed cf. Using Manoko's structure, Ministry of Construction Notification No. 1
Table 1 shows the results of the quasi-nonflammability test based on No. 231. As is clear from Table 1, the structure of this comparative example was comparable in bending strength and water absorption to the foam in the practical row, but the change in appearance after combustion was significant, with most of the foam being burned away. Next. It is also significantly inferior in terms of smoke generation coefficient and immersion time area.

Comparison column 4: 100 weights of 100% phenol resin (made by Hodogaya Chemical Co., Ltd., product name) and Freon 113 (made by Mitsui DuPont Fluorochemical Co., Ltd., product name) 15:!
Danphenone 110B curing agent (Hodogaya Chemical Co., Ltd. brand name) 401 storage part, Turnphenon 110C (Hodogaya Chemical Co., Ltd. isocyanate, trade name) 1 part to the bath solution mixed with Ejt part.
Mix 5 parts by weight, add FCM liquid, and use a stirrer equipped with turbine blades.

The mixture was stirred and mixed for 5 seconds at a rotation speed of 7 minutes, and then carried out in the same manner as in Example 1 to obtain a structure in which a colored iron plate was adhered to the surface of a phenol foam (thickness: 15 mm) and aluminum kraft paper was adhered to the back surface.

Phenol foam has extremely poor curing properties at 100℃3
After cure was performed in 0 minutes. In this case, the density of the 9 foam is 0.040G/d9, and the bending strength is 1.2 kg/cm.
Mayu's structure was similar to the actual structure in terms of bending strength and water absorption rate, but due to the 7 liability (chips) occurring on the surface of the phenol foam, it was difficult to combine the foam and aluminum. Connections with kraft paper and colored iron plates were omitted.

Ministry of Construction Notification No. 1231 using foam properties and structures
Table 1 shows the results of the quasi-nonflammability test based on No.

As is clear from Table 1, the structure of the comparative example is outside after firing!
! My friend is in good condition and has a long afterburn.

The following dates (effects of the invention) For foaming according to the present invention! A foaming resin composition that has a low viscosity in addition to the IN resin composition, has excellent workability and foam magnification, and is highly flame retardant, and produces a foam with high strength (bending strength) and low water absorption. be.

The foaming vE fat composition has a low viscosity and can be easily foamed using a normal low-pressure foaming bowl, and the conventional urethane foaming equipment can be directly used for TPE.

In addition, the II structure obtained from this foaming resin composition exhibits excellent characteristics in terms of external appearance after combustion, afterflame 1 smoke emission coefficient 1 piece 1 hour area, and exhaust temperature after 5 minutes, and is strong ( Combined with the improvement in bending strength) and the reduction in water absorption, the result is a structure with excellent flame retardant properties.

Claims (1)

[Claims] 1. An aqueous solution and/or slurry of carbohydrates, a compound having at least one carboxylic anhydride group or carboxylic acid group in addition to a carboxylic anhydride group, a saturated dibasic acid, or as necessary Depending on the total equivalent of the acid component and alcohol component containing α,β-ethylenically unsaturated dibasic acid,
Contains a polyester polyol obtained by reacting an alcohol component containing 30 equivalent % of tris(2-hydroxyethyl) isocyanurate, a reaction catalyst isocyanate compound, and optionally a foam stabilizer, a flame retardant, and/or a blowing agent. A foaming resin composition. 2. The foaming resin composition according to claim 1, wherein the water content of the aqueous solution and/or slurry of carbohydrates is 5 to 25% by weight. 3. A foam obtained from the foamable resin composition according to claim 1. 4. A flame-retardant structure obtained by providing a flame-retardant or non-flammable plate or sheet on at least one side of a foam obtained from the foamable resin composition according to claim 1 or 2.