JPH0995630A - Fire-retarding coating composition and electric wire or electric power cable coated therewith - Google Patents
Fire-retarding coating composition and electric wire or electric power cable coated therewithInfo
- Publication number
- JPH0995630A JPH0995630A JP8014502A JP1450296A JPH0995630A JP H0995630 A JPH0995630 A JP H0995630A JP 8014502 A JP8014502 A JP 8014502A JP 1450296 A JP1450296 A JP 1450296A JP H0995630 A JPH0995630 A JP H0995630A
- Authority
- JP
- Japan
- Prior art keywords
- fire
- weight
- coating film
- coating
- emulsion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000008199 coating composition Substances 0.000 title claims description 16
- 239000000839 emulsion Substances 0.000 claims abstract description 36
- 239000004927 clay Substances 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 15
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 15
- 239000000057 synthetic resin Substances 0.000 claims abstract description 15
- 239000010445 mica Substances 0.000 claims abstract description 14
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 14
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 8
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 8
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 8
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims abstract description 6
- 239000000347 magnesium hydroxide Substances 0.000 claims abstract description 4
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims abstract description 4
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims description 93
- 239000011248 coating agent Substances 0.000 claims description 89
- -1 acrylic ester Chemical class 0.000 claims description 8
- 239000000203 mixture Substances 0.000 abstract description 31
- 230000000694 effects Effects 0.000 abstract description 19
- 239000000463 material Substances 0.000 abstract description 12
- 230000003405 preventing effect Effects 0.000 abstract description 12
- 239000007799 cork Substances 0.000 abstract description 3
- 229910052736 halogen Inorganic materials 0.000 abstract description 3
- 150000002367 halogens Chemical class 0.000 abstract description 3
- 125000005396 acrylic acid ester group Chemical group 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract 1
- 231100000614 poison Toxicity 0.000 abstract 1
- 230000007096 poisonous effect Effects 0.000 abstract 1
- 230000000979 retarding effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 26
- 238000002156 mixing Methods 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 239000003973 paint Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 230000002265 prevention Effects 0.000 description 8
- 239000004113 Sepiolite Substances 0.000 description 7
- 239000000835 fiber Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 229910052624 sepiolite Inorganic materials 0.000 description 7
- 235000019355 sepiolite Nutrition 0.000 description 7
- 239000004615 ingredient Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 238000005507 spraying Methods 0.000 description 6
- 239000002341 toxic gas Substances 0.000 description 6
- 150000008282 halocarbons Chemical class 0.000 description 5
- 229910052791 calcium Inorganic materials 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 150000004677 hydrates Chemical class 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 229960000892 attapulgite Drugs 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 2
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 239000000391 magnesium silicate Substances 0.000 description 2
- 229910052919 magnesium silicate Inorganic materials 0.000 description 2
- 235000019792 magnesium silicate Nutrition 0.000 description 2
- ZADYMNAVLSWLEQ-UHFFFAOYSA-N magnesium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[Mg+2].[Si+4] ZADYMNAVLSWLEQ-UHFFFAOYSA-N 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052625 palygorskite Inorganic materials 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 108010082455 Sebelipase alfa Proteins 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229940041615 kanuma Drugs 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 150000003839 salts Chemical group 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はノンハロゲン系の防
火塗料組成物に関し、更に詳しくは、延焼防止効果が優
れ、火災遭遇時にも塩化水素などの有毒ガスを発生する
ことがなく、塗装がしやすく、塗装後の塗膜は柔軟でし
かも耐水性が良好であって、電線や電力ケーブルの延焼
防止用の塗膜材料として有用な防火塗料組成物に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a halogen-free fireproof coating composition, and more particularly, it has an excellent effect of preventing fire spread, does not generate toxic gas such as hydrogen chloride even when a fire is encountered, and is easy to apply. The present invention relates to a fire-preventive coating composition which is flexible and has good water resistance after coating and which is useful as a coating material for preventing the spread of electric wires and power cables.
【０００２】[0002]
【従来の技術】例えば、電力ケーブルの絶縁体やシース
には、ポリエチレンやポリ塩化ビニルなどの材料が用い
られている。しかしながら、これらの材料はいずれも可
燃性であるため、火災に遭遇すると燃焼する。そして、
燃焼時の火災は前記したケーブル被覆を延焼していき、
当該火災現場に隣接する別の部屋にまで伝播して被害を
増大させることがある。2. Description of the Related Art For example, materials such as polyethylene and polyvinyl chloride are used for insulators and sheaths of power cables. However, since all of these materials are flammable, they burn when encountering a fire. And
The fire at the time of burning spreads the above-mentioned cable coating,
It may spread to another room adjacent to the fire site and increase damage.
【０００３】したがって、ケーブルにはこのような事態
の発生を防止するための対策が講じられている。その１
つは、ケーブルの外周を加熱時に発泡する組成物の塗膜
で被覆し、火災遭遇時には、この塗膜でそれ以上の延焼
を防止する方法である。また、他の対策としては、ケー
ブルの外周を非発泡性の防火塗料の塗膜で被覆して延焼
を防止する方法がある。Therefore, measures are taken to prevent such a situation from occurring in the cable. Part 1
One is a method in which the outer circumference of the cable is covered with a coating film of a composition that foams when heated, and when a fire is encountered, this coating film prevents further spread of fire. Further, as another countermeasure, there is a method of covering the outer circumference of the cable with a coating film of a non-foaming fireproof paint to prevent the spread of fire.
【０００４】この後者の対策で用いられる防火塗料とし
ては、例えば、特公昭５７−３５７３６号公報で提案さ
れている組成物や、特公昭５８−２８３１０号公報で提
案されている組成物がある。まず、前者の組成物は、エ
チレン−酢酸ビニルエマルジョンのような合成樹脂エマ
ルジョン、溶融しない有機繊維、クレーまたは／および
ホウ酸亜鉛を含む無機粉体、そしてハロゲン化炭化水素
を必須成分とするものである。Examples of the fire-preventing paint used for the latter countermeasure include a composition proposed in Japanese Patent Publication No. 57-35736 and a composition proposed in Japanese Patent Publication No. 58-28310. First, the former composition contains a synthetic resin emulsion such as ethylene-vinyl acetate emulsion, non-melting organic fiber, an inorganic powder containing clay or / and zinc borate, and a halogenated hydrocarbon as essential components. is there.
【０００５】この組成物の塗膜の場合、ハロゲン化炭化
水素によってかなりの難燃性が確保されるとともに、火
災に遭遇すると、そのときの熱によって配合されている
クレーまたは／およびホウ酸亜鉛が硬い外殻を形成し、
その下に位置しているケーブル被覆が燃えることを阻止
して、延焼防止に寄与する。しかしながら、この塗膜の
場合、ハロゲン化炭化水素は高価であり、しかもその熱
分解に伴って塩化水素のような有毒ガスを発生すること
がある。また、有機繊維を配合するときに比較的長い繊
維が混入した場合、例えばスプレー塗装時にスプレーガ
ンが目詰まりを起こすことがある。また、長い繊維が混
入すると、ケーブル被覆の上に形成された塗膜にピンホ
ールが発生しやすく、そのピンホールから湿気がケーブ
ル被覆にまで侵入して当該被覆と塗膜との密着性が悪く
なるという問題も起こっている。In the case of the coating film of this composition, the halogenated hydrocarbon ensures a considerable flame retardance, and when a fire is encountered, the clay or / and zinc borate compounded by the heat at that time is used. Forming a hard outer shell,
It prevents the cable jacket located below it from burning and contributes to the spread of fire. However, in the case of this coating film, the halogenated hydrocarbon is expensive, and further, a toxic gas such as hydrogen chloride may be generated due to its thermal decomposition. Further, if relatively long fibers are mixed in when the organic fiber is mixed, the spray gun may be clogged during spray coating, for example. Also, if long fibers are mixed, pinholes are likely to occur in the coating film formed on the cable coating, and moisture penetrates into the cable coating from the pinholes, resulting in poor adhesion between the coating and the coating film. There is also the problem of becoming.
【０００６】後者の組成物は、エチレン−酢酸ビニル共
重合体のエマルジョン、アスベストのような無機繊維、
水酸化アルミニウムを含む無機粉体、ハロゲン化炭化水
素および三酸化アンチモンを必須成分とするものであ
る。この塗膜の場合は、前記した塗膜に比べれば耐水性
や耐候性が優れ、また、有毒ガスの発生量も少なくなる
が、それでも、これら特性にはいまだ不充分であるとさ
れている。The latter composition is an emulsion of ethylene-vinyl acetate copolymer, an inorganic fiber such as asbestos,
Inorganic powder containing aluminum hydroxide, halogenated hydrocarbon and antimony trioxide are essential components. In the case of this coating film, the water resistance and weather resistance are superior to those of the above-mentioned coating film, and the amount of toxic gas generated is reduced, but nonetheless, it is said that these properties are still insufficient.
【０００７】また、この有毒ガスの発生量を抑制しつ
つ、ケーブルの延焼防止効果を維持するためには、例え
ば水酸化アルミニウムなどの金属水和物を含む無機粉体
の配合量を増量すればよいことになるが、そのような組
成にすると、形成した塗膜は柔軟性を喪失して脆くな
り、しかも耐水性や耐候性が失われるようになる。Further, in order to maintain the effect of preventing the spread of fire of the cable while suppressing the generation amount of this toxic gas, the amount of the inorganic powder containing a metal hydrate such as aluminum hydroxide should be increased. Even better, with such a composition, the coating film formed loses flexibility and becomes brittle, and also loses water resistance and weather resistance.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、従来の延焼
防止組成物における上記したような問題を解決し、火災
遭遇時には有毒ガスを発生しないノンハロゲン系である
にもかかわらず、延焼防止効果はハロゲン系のものとほ
ぼ同等であり、形成した塗膜は柔軟で耐水性や耐候性に
優れ、塗装が行いやすく、しかも安価である防火塗料組
成物とそれが塗装されている電線または電力ケーブルの
提供を目的とする。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems in the conventional fire spread prevention composition, and has a fire spread prevention effect in spite of being a non-halogen type which does not generate a toxic gas when a fire is encountered. Almost the same as the halogen type, the formed coating film is flexible, has excellent water resistance and weather resistance, is easy to apply, and is inexpensive, as well as the electric wire or power cable on which it is applied. For the purpose of provision.
【０００９】[0009]
【課題を解決するための手段】上記した目的を達成する
ために、本発明においては、全て乾燥重量に換算して、
合成樹脂エマルジョン２０〜４０重量％、金属水和物３
０〜７０重量％、クレーまたは／および山皮１〜９重量
％、ならびに、マイカ５〜２０重量％を含有することを
特徴とする防火塗料組成物が提供される。また、前記防
火塗料組成物の塗膜が形成されている電線または電力ケ
ーブルが提供される。In order to achieve the above object, in the present invention, all are converted to dry weight,
Synthetic resin emulsion 20-40% by weight, metal hydrate 3
There is provided a fireproof coating composition comprising 0 to 70% by weight, 1 to 9% by weight of clay or / and mountain bark, and 5 to 20% by weight of mica. There is also provided an electric wire or power cable on which a coating film of the fireproof coating composition is formed.
【００１０】[0010]
【発明の実施の形態】まず、本発明の組成物における第
１の必須成分は合成樹脂エマルジョンである。このエマ
ルジョンは、水に合成樹脂の微粒子が乳濁状態で分散し
ているものであって、乾燥する、すなわち水が除去され
た時点では、合成樹脂の微粒子が相互融着して膜が形成
される。First, the first essential component in the composition of the present invention is a synthetic resin emulsion. In this emulsion, fine particles of synthetic resin are dispersed in water in an emulsion state. When the particles are dried, that is, when water is removed, the fine particles of synthetic resin are fused to each other to form a film. It
【００１１】本発明の防火塗料組成物におけるこの合成
樹脂エマルジョンの配合量は、乾燥重量にして、すなわ
ち上記したように水を除去した時点における重量に換算
して２０〜４０重量％に設定される。この配合量が２０
重量％よりも少なくなると、形成される塗膜の柔軟性が
なくなって脆くなり、耐水性に問題を生じてくる。逆に
４０重量％よりも多くなると、樹脂成分が多くなりすぎ
て難燃性が低下し、ケーブルの延焼防止効果は不充分に
なる。好ましくは、２５〜３５重量％である。The blending amount of this synthetic resin emulsion in the fireproof coating composition of the present invention is set to 20 to 40% by weight in terms of dry weight, that is, in terms of the weight when water is removed as described above. . When the blending amount is 20
When the content is less than the weight%, the coating film formed becomes inflexible and becomes brittle, which causes a problem in water resistance. On the other hand, if it is more than 40% by weight, the resin component becomes too much and the flame retardancy is lowered, and the effect of preventing the spread of the cable becomes insufficient. Preferably, it is 25 to 35% by weight.
【００１２】本発明で用いる合成樹脂エマルジョンとし
ては、従来から知られているものであれば何であっても
よく、例えば、酢酸ビニルの水性エマルジョン、エチレ
ン−酢酸ビニル共重合体（ＥＶＡ）の水性エマルジョ
ン、アクリル酸エステルの水性エマルジョン、酢酸ビニ
ル−塩化ビニル共重合体の水性エマルジョン、エチレン
−酢酸ビニル−塩化ビニル三元共重合体の水性エマルジ
ョン、合成ゴムの水性エマルジョン、天然ゴムの水性エ
マルジョンなどをあげることができる。これらは、それ
ぞれ単独で用いてもよく、また２種以上を適宜に選んで
混合して用いてもよい。The synthetic resin emulsion used in the present invention may be any known one, for example, an aqueous emulsion of vinyl acetate or an aqueous emulsion of ethylene-vinyl acetate copolymer (EVA). , Acrylic ester aqueous emulsion, vinyl acetate-vinyl chloride copolymer aqueous emulsion, ethylene-vinyl acetate-vinyl chloride terpolymer aqueous emulsion, synthetic rubber aqueous emulsion, natural rubber aqueous emulsion, etc. be able to. These may be used alone, or two or more kinds may be appropriately selected and mixed and used.
【００１３】本発明の組成物で電線や電力ケーブルの被
覆に塗膜を形成しようとする場合には、エマルジョンと
しては、耐水性や耐候性が優れた塗膜を形成できるもの
を用いることが好ましい。上に列記した合成樹脂エマル
ジョンのうち、上記した塗膜形成にとっては、ＥＶＡと
アクリル酸エステルとが共存する水性エマルジョンは好
適である。When a coating film is formed on the coating of electric wires or power cables with the composition of the present invention, it is preferable to use an emulsion capable of forming a coating film having excellent water resistance and weather resistance. . Among the synthetic resin emulsions listed above, an aqueous emulsion in which EVA and an acrylic ester coexist is suitable for forming the above-mentioned coating film.
【００１４】その場合、アクリル酸エステルのエマルジ
ョンの乾燥重量が、全体のエマルジョンの乾燥重量に対
し１〜５０重量％（したがって、ＥＶＡのエマルジョン
の乾燥重量は５０〜９９重量％）になっていることが好
ましい。アクリル酸エステルエマルジョンの割合が１重
量％より少ない場合は、形成された塗膜の柔軟性がなく
なって脆くなると同時に、耐水性や耐候性も不充分にな
ってケーブル用の防火塗料としての使用が困難になる。
そしてまた、高温になると塗膜の強度が低下して火災遭
遇時に塗膜が落下し、電線や電力ケーブルの被覆が露出
するという事態が起こりやすくなる。In this case, the dry weight of the emulsion of acrylic acid ester is 1 to 50% by weight based on the dry weight of the whole emulsion (thus, the dry weight of the emulsion of EVA is 50 to 99% by weight). Is preferred. When the proportion of the acrylic ester emulsion is less than 1% by weight, the formed coating film becomes inflexible and brittle, and at the same time, the water resistance and weather resistance are insufficient, and it is not suitable for use as a fireproof paint for cables. It will be difficult.
Further, when the temperature becomes high, the strength of the coating film is lowered, and the coating film may drop when a fire is encountered, and the electric wire or power cable coating is likely to be exposed.
【００１５】また５０重量％より多い場合は、塗膜の耐
水性や耐候性は良好になるが、材料コストは高くなって
経済性に難点が生ずる。アクリル酸エステルエマルジョ
ンの好ましい割合は、１０〜２０重量％である。この割
合のものを使用することによりはじめて、下記する第２
の必須成分、第３の必須成分および第４の必須成分を所
望量加えても塗膜としての形状を維持することができ
る。On the other hand, if it is more than 50% by weight, the water resistance and weather resistance of the coating film will be good, but the material cost will be high and there will be problems in economic efficiency. A preferable ratio of the acrylic ester emulsion is 10 to 20% by weight. It is only after using this ratio that the second
Even if the desired amounts of the essential ingredient, the third essential ingredient and the fourth essential ingredient are added, the shape of the coating film can be maintained.
【００１６】本発明の組成物における第２の必須成分で
ある金属水和物は、塗膜が火災に遭遇した時に熱分解し
て自らが有している結晶水を放出し、そのときの吸熱反
応によって塗膜の下に位置する電線や電力ケーブルの被
覆（樹脂）の温度上昇を抑制し、もって当該被覆の着火
防止または燃焼継続を遮断することに寄与する。また、
脱水反応時に水蒸気を発生してケーブル被覆の燃焼ガス
を希釈し、もって更なる燃焼を阻止することにも寄与す
る。The metal hydrate, which is the second essential component of the composition of the present invention, thermally decomposes when the coating film encounters a fire and releases its own water of crystallization. The reaction suppresses the temperature rise of the coating (resin) of the electric wire or power cable located under the coating film, and thus contributes to preventing ignition of the coating or interruption of continuous combustion. Also,
During the dehydration reaction, steam is generated to dilute the combustion gas of the cable coating, thereby contributing to the prevention of further combustion.
【００１７】このような金属水和物としては、加熱時に
自らが有している結晶水を放出できるものであれば何で
もよく、水酸化アルミニウム、水酸化マグネシウムなど
を好適例としてあげることができる。とくに、価格の点
から水酸化アルミニウムは好適である。これらの金属水
和物は、それぞれ単独で用いてもよく、２種以上を適宜
に混合して用いてもよい。As such a metal hydrate, any metal hydrate can be used as long as it can release the water of crystallization it has, and aluminum hydroxide, magnesium hydroxide and the like can be mentioned as suitable examples. Particularly, aluminum hydroxide is preferable from the viewpoint of cost. These metal hydrates may be used alone or in an appropriate mixture of two or more kinds.
【００１８】なお、配合するに際しては、これら金属水
和物を例えばシランカップリング剤などで事前に表面処
理しておくと、均一分散が実現できるので有効である
が、表面処理は必ずしも必須ではない。この金属水和物
の組成物全体における配合量は、乾燥重量にして、すな
わち前記した合成樹脂エマルジョンの水が除去された時
点における重量に換算して、３０〜７０重量％に設定さ
れる。It should be noted that, in the case of blending, it is effective to subject these metal hydrates to surface treatment with, for example, a silane coupling agent in advance so that uniform dispersion can be realized, but the surface treatment is not always essential. . The content of the metal hydrate in the whole composition is set to 30 to 70% by weight in terms of dry weight, that is, in terms of the weight of the synthetic resin emulsion at the time when water is removed.
【００１９】この配合量が３０重量％より少ない場合
は、前記した効果が充分に発揮されないので塗膜の難燃
性が低下して延焼防止効果は不充分となり、また、７０
重量％より多くなると、塗膜の柔軟性が低下して脆くな
り、例えば電力ケーブルを曲げた時に電力ケーブルの被
覆から塗膜が剥離することがある。好ましい配合量は４
０〜６０重量％である。If the blending amount is less than 30% by weight, the above-mentioned effects are not sufficiently exhibited, so that the flame retardancy of the coating film is deteriorated and the fire spread preventing effect becomes insufficient.
When the content is more than 5% by weight, the flexibility of the coating film decreases and becomes brittle, and the coating film may peel from the coating of the power cable when the power cable is bent, for example. The preferred blending amount is 4
It is 0 to 60% by weight.
【００２０】この金属水和物は粉末状態で配合される
が、その場合、調製された防火塗料組成物に均一分散さ
せ、形成した塗膜の難燃性を高水準に確保させることを
考えると、その粉末は、平均粒径で３〜３０μｍ程度の
ものを用いることが好ましい。このような金属水和物と
しては、例えば、ＣＬ−３１０（商品名、住友化学工業
社製の水酸化アルミニウム）、キスマ５Ａ（商品名、協
和化学社製の水酸化マグネシウム）などをあげることが
できる。This metal hydrate is blended in a powder state. In that case, considering that it is uniformly dispersed in the prepared fireproof coating composition to ensure a high level of flame retardancy of the formed coating film. It is preferable that the powder has an average particle size of about 3 to 30 μm. Examples of such metal hydrates include CL-310 (trade name, aluminum hydroxide manufactured by Sumitomo Chemical Co., Ltd.), Kisuma 5A (trade name, magnesium hydroxide manufactured by Kyowa Chemical Co., Ltd.), and the like. it can.
【００２１】本発明の組成物における第３の必須成分は
クレーまたは／および山皮であり、また第４の必須成分
はマイカである。組成物内にこの第３の必須成分と第４
の必須成分の両者が共存することによってはじめて、塗
膜が火災に遭遇した時に、両者は硬い外殻を形成し、も
ってその下に位置する電線や電力ケーブルの被覆の溶融
に伴う樹脂の流出を防止してその延焼を防止する働きを
する。The third essential ingredient in the composition of the present invention is clay or / and mountain bark, and the fourth essential ingredient is mica. This third essential ingredient and the fourth in the composition
For the first time, when both coatings encounter a fire, they both form a hard outer shell due to the coexistence of both of the essential components described above, and thus the resin spillage that accompanies the melting of the electric wire and power cable coatings located below It acts to prevent the spread of fire.
【００２２】この効果は、第３の必須成分（クレーまた
は／および山皮）と第４の必須成分（マイカ）のいずれ
か一方だけが含有されている場合には実現せず、両者が
共存したときにはじめて実現する。この理由は明確では
ないが、一般に、クレーは層状組織を有する含水ケイ酸
塩であり、また、山皮は後述するような組成の鉱物であ
り、更にマイカはへき開面を有する偏平組織のアルミノ
ケイ酸塩であるため、加熱されると、これらの間ではそ
の熱で一種の焼結反応が起こって、硬い殻を形成するの
ではないかと考えられる。This effect cannot be realized when only one of the third essential component (clay or / and mountain bark) and the fourth essential component (mica) is contained, and both coexist. Sometimes it happens for the first time. Although the reason for this is not clear, in general, clay is a hydrous silicate having a layered structure, mountain bark is a mineral having a composition described later, and mica is a flat structure aluminosilicate having a cleaved surface. Since it is a salt, it is considered that when heated, a kind of sintering reaction occurs between them to form a hard shell.
【００２３】第３の必須成分のうちのクレーは、従来か
ら各種の塗料に使用されているもの（例えば、カオリナ
イト、タルク、ゼオライト、鹿沼土など）であれば何で
あってもよく、格別限定されるものではない。また、ク
レーは、乾式、湿式、または焼成して製造されたものは
全て使用することができる。クレーは粉粒状態で配合さ
れるが、その場合、それらは微細であるほど組成物内で
の均一分散は良好になり、その結果、形成された塗膜の
火災遭遇時には、塗膜全体に前記した外殻が均一に形成
されて延焼防止効果は向上する。通常、２μｍ以下の大
きさのものを用いることが好ましい。The clay of the third essential component may be any clay as long as it has been conventionally used in various paints (for example, kaolinite, talc, zeolite, Kanuma soil, etc.), and it is particularly limited. It is not something that will be done. In addition, as the clay, any clay, which is manufactured by a dry method, a wet method, or a baking method can be used. The clays are blended in the form of powder, in which case the finer they are, the better the uniform distribution in the composition, so that in the event of a fire of the formed coating, the entire coating is The formed outer shell is uniformly formed, and the fire spread prevention effect is improved. Usually, it is preferable to use one having a size of 2 μm or less.
【００２４】このようなクレーとしては、例えば、バー
ゲスＮｏ．１０（商品名、白石カルシウム社製）をあげ
ることができる。また、第３の必須成分のうち、山皮と
は、その表面に多数の水酸基を有する粘土鉱物の１種で
あり、含水マグネシウムシリケートのセピオライト(sep
iolite)や含水マグネシウムアルミニウムシリケートの
アタパルジャイト(attapulgite)のことをいい、通常、
マウンテンコルク(mountain cork)、マウンテンレザー
(mountain leather)、マウンテンウッド(mountain woo
d)とも呼ばれているものである。すなわち、一般には、
繊維性を具備するケイ酸マグネシウムの塊であり、日本
で海泡石と呼ばれるものもこの１種である。Examples of such clay include, for example, Burgess No. 10 (trade name, manufactured by Shiraishi Calcium Co., Ltd.) can be mentioned. Among the third essential components, the mountain bark is one of clay minerals having a large number of hydroxyl groups on its surface, and is a hydrous magnesium silicate sepiolite (sep
iolite) or hydrous magnesium aluminum silicate attapulgite (attapulgite), usually
Mountain cork, mountain leather
(mountain leather), mountain wood (mountain woo
It is also called d). That is, in general,
It is a mass of magnesium silicate that has fibrous properties, and one of them is called sepiolite in Japan.
【００２５】この山皮は、一且例えば水に分散させたの
ちにその分散液を乾燥すると自分自身が乾燥固結性を示
すとともに、同時に分散している他の粉末をも固結する
という性質を備えている。そして、この山皮は、上記し
たようにして固結したものを焼成すると焼結してセラミ
ックス化することにより硬くなりその形状が保持され
る。This mountain bark has a property that when it is once dispersed in, for example, water, and then the dispersion is dried, the mountain bark itself shows a dry setting property, and at the same time, it also sets other powders being dispersed. Is equipped with. Then, the mountain crust is hardened by sintering the solidified material as described above to form a ceramic, and the shape thereof is maintained.
【００２６】したがって、本発明の組成物に上記山皮が
配合されていると、形成された塗膜は山皮の乾燥固結性
によってその形状は保持され、また火災遭遇時には山皮
がセラミックス化して硬い外殻が形成され、その下に位
置する電線や電力ケーブルの被覆の延焼を有効に抑止す
ることができるようになる。また、山皮の形状は格別限
定されるものではなく、繊維状、板状、粉粒状のいずれ
の形状であってもよい。Therefore, when the composition of the present invention contains the above-mentioned mountain bark, the formed coating film retains its shape due to the dry solidification property of the mountain bark, and the mountain bark becomes a ceramic when a fire is encountered. A hard outer shell is formed, and it becomes possible to effectively prevent the spread of the coating of the electric wires and power cables located thereunder. Moreover, the shape of the mountain bark is not particularly limited, and may be any of fibrous, plate-like, or powder-like shape.
【００２７】繊維状の山皮を用いる場合には、繊維長が
１０cm以下で、繊維径が0.５〜５０μｍ程度のものであ
るものが好ましく、とくに、繊維長0.１〜５cm程度で繊
維径５〜１０μｍ程度であるものが好ましい。このよう
な繊維状の山皮の場合、束状になっていてもよく、また
例えば１０〜２００本程度が集束されているものであっ
てもよい。When the fibrous mountain bark is used, it is preferable that the fiber length is 10 cm or less and the fiber diameter is about 0.5 to 50 μm, and particularly, the fiber length is about 0.1 to 5 cm. Those having a diameter of about 5 to 10 μm are preferable. In the case of such a fibrous mountain bark, it may be in a bundle shape, and for example, about 10 to 200 pieces may be bundled.
【００２８】板状または粉粒状の山皮を用いる場合に
は、その粒度が５〜３５０メッシュ（タイラー篩）程度
のものであることが好ましい。このような山皮として
は、例えば、エードプラス（商品名、水沢化学社製）を
あげることができる。この第３の必須成分において、ク
レーと山皮はそれぞれ単独で用いても良いし、また一緒
に混合した状態で用いてもよい。しかし、前記したよう
な山皮の独特の作用効果からして、山皮を用いると、火
災遭遇時における好適な外殻の形成が可能となり、前記
した金属水和物を多量に配合することができ、もって延
焼防止効果に優れた塗膜形成が可能になるので、第３の
必須成分には山皮を配合することが好ましい。When a plate-like or powdery mountain bark is used, the particle size thereof is preferably about 5 to 350 mesh (Tyler sieve). As such a mountain bark, for example, Aed Plus (trade name, manufactured by Mizusawa Chemical Co., Ltd.) can be used. In the third essential component, clay and mountain bark may be used alone or in a state of being mixed together. However, because of the unique effect of the mountain bark as described above, the use of the mountain bark makes it possible to form a suitable outer shell when a fire encounters, and it is possible to blend a large amount of the metal hydrate described above. Since it is possible to form a coating film having an excellent effect of preventing the spread of fire, mountain bark is preferably added to the third essential component.
【００２９】クレーと山皮を混合して第３の必須成分と
する場合、両者の混合割合は格別限定されるものではな
いが、塗膜形成が行いやすく、また火災遭遇時の外殻の
落下が起こりにくいということからして、クレー：４〜
９重量％、山皮：２〜９重量％の割合で混合することが
好ましい。第４の必須成分であるマイカは偏平な結晶片
が多数枚重なりあったものであるため、例えば、塗膜の
外側から水が侵入しようとした場合、その水の侵入経路
は長くなって内部にまで侵入しづらくなり、結果として
塗膜の耐水性の向上に資する。When clay and mountain bark are mixed to form the third essential component, the mixing ratio of both is not particularly limited, but it is easy to form a coating film, and the outer shell drops when a fire is encountered. Clay: 4 ~
It is preferable to mix 9% by weight and mountain bark: 2 to 9% by weight. Mica, which is the fourth essential component, has a large number of flat crystal fragments that are stacked on top of each other. It becomes difficult to penetrate even to the end, and as a result, it contributes to the improvement of the water resistance of the coating film.
【００３０】ところで、マイカは細かくすると、塗膜の
外側からの水の侵入に対する遮蔽効果を弱めることにな
り、また組成物の粘度の急激な上昇を招いてスプレー塗
装が困難になる。また、マイカはフレーク状の結晶構造
をもっているので微粉にすることは製造上困難である。
このようなことから、マイカとしては平均粒径が、４０
〜１５０μｍ程度のものが使用される。By the way, if the mica is made fine, the effect of shielding water from the outside of the coating film is weakened, and the viscosity of the composition is rapidly increased to make spray coating difficult. Further, since mica has a flake-like crystal structure, it is difficult to make it into a fine powder in terms of production.
Therefore, the average particle size of mica is 40
The thing of about 150 μm is used.
【００３１】本発明で用いるマイカとしては、例えば、
Ｂ−９２（商品名、山口雲母工業所製）をあげることが
できる。第３の必須成分の配合量と第４の必須成分の配
合量は、前記した合成樹脂のエマルジョンの乾燥重量に
対し、それぞれ、１〜９重量％、５〜２０重量％に設定
される。好ましい配合量は、それぞれ、４〜９重量％、
７〜１５重量％である。The mica used in the present invention is, for example,
B-92 (trade name, manufactured by Yamaguchi Mica Industry Co., Ltd.) can be mentioned. The blending amounts of the third essential component and the fourth essential component are set to 1 to 9% by weight and 5 to 20% by weight, respectively, with respect to the dry weight of the synthetic resin emulsion. The preferable blending amount is 4 to 9% by weight, respectively.
It is 7 to 15% by weight.
【００３２】この配合量が、いずれも上記範囲の下限値
より少なくなると、形成された塗膜の火災遭遇時におけ
る外殻形成が不充分になって延焼防止効果は低減し、ま
た、調製された塗料は例えば電線や電力ケーブルの被覆
に塗装したときにたれ落ちやすくなって厚い塗膜を形成
することが困難になり、その結果からも、塗膜の延焼防
止効果は低減する。更には、マイカの配合量が少なすぎ
るため、形成された塗膜の耐水性も劣るようになって電
線や電力ケーブルの被覆との間で剥離することが起こり
はじめる。If the blending amount is less than the lower limit value of the above range, the coating film formed is insufficient in shell formation at the time of encountering a fire, and the effect of preventing spread of fire is reduced. For example, when a coating material is applied to a coating of an electric wire or an electric power cable, the coating material easily sags and it becomes difficult to form a thick coating film. As a result, the effect of preventing spread of the coating film is reduced. Furthermore, since the amount of mica compounded is too small, the water resistance of the coating film formed becomes poor and peeling from the coating of the electric wire or power cable begins to occur.
【００３３】逆に、これら成分の配合量がそれぞれ上記
範囲の上限値よりも多くなると、調製した防火塗料組成
物の粘度が高くなりすぎて、スプレー塗装や刷毛塗り作
業が困難になり、均一な厚みの塗膜を形成しづらくな
る。そして、塗装性を高めるために、上記組成物に更に
水を添加してその粘度を低めると、その組成物は、たし
かに、塗装性は良好になるものの、かなりの量の水を加
えなければならず、形成された塗膜の収縮が激しく進
み、極端な場合は塗膜にクラックが発生することもあっ
て、塗料として機能し得なくなる。On the contrary, if the blending amount of each of these components exceeds the upper limit of the above range, the viscosity of the prepared fire-retardant coating composition becomes too high, which makes spray coating and brush coating operations difficult and makes uniform. It becomes difficult to form a thick coating film. Then, in order to improve the coatability, if water is further added to the above composition to reduce its viscosity, the composition will certainly have good coatability, but a considerable amount of water must be added. However, the formed coating film shrinks sharply, and in extreme cases, the coating film may be cracked and cannot function as a coating material.
【００３４】本発明の防火塗料組成物は、上記した各成
分の所定量を混合することにより、所望粘度の塗料とし
て調製される。そのとき、必要に応じて、適当量の水を
添加して粘度調整してもよい。そして、得られた塗料
を、通常の塗装方法、例えばスプレー塗装や刷毛塗りな
どの方法によって、電線や電力ケーブルなどの対象物に
塗装して実使用に供される。The fireproof coating composition of the present invention is prepared as a coating having a desired viscosity by mixing predetermined amounts of the above components. At that time, if necessary, an appropriate amount of water may be added to adjust the viscosity. Then, the obtained coating material is applied to an object such as an electric wire or an electric power cable by an ordinary coating method, for example, a spray coating method, a brush coating method, or the like for practical use.
【００３５】[0035]
実施例１〜１１，比較例１〜１０ 表１に示した成分を表示の割合（重量％）で混合し、各
種の塗料を調製した。なお、表１に記載されている各成
分は以下のものである。 ＊１：商品名、ボンコート２３１５（固形分５５重量
％）、大日本インキ（株）製。Examples 1 to 11 and Comparative Examples 1 to 10 The components shown in Table 1 were mixed in the indicated proportions (% by weight) to prepare various paints. The components shown in Table 1 are as follows. * 1: Brand name, Boncoat 2315 (solid content 55% by weight), manufactured by Dainippon Ink and Chemicals, Inc.
【００３６】＊２：商品名、ボンコートＥＣ−８７７
（固形分４９重量％）、大日本インキ（株）製。 ＊３：商品名、ポリゾールＳ−５００（固形分５０重量
％）、昭和高分子（株）製。 ＊４：商品名、ＣＬ−３１０（平均粒径１０μｍ）、住
友化学工業社製。* 2: Product name, Boncoat EC-877
(Solid content 49% by weight), manufactured by Dainippon Ink Co., Ltd. * 3: trade name, Polysol S-500 (solid content 50% by weight), manufactured by Showa Highpolymer Co., Ltd. * 4: trade name, CL-310 (average particle size 10 μm), manufactured by Sumitomo Chemical Co., Ltd.
【００３７】＊５：商品名、キスマ５Ａ（平均粒径0.８
μｍ）、協和化学社製。 ＊６：商品名、Ｚｉｎｃ Ｂｏｒａｔｅ ２３３５、Ｕ
Ｓボラックス社製。 ＊７：商品名、エンパラ７０（塩素含有量７０重量
％）、味の素社製。 ＊８：商品名、ＡＦＲ１００１（臭素含有量８７重量
％）、旭硝子社製。 ＊９：商品名、ＡＴＯＸ Ｓ、日本精鉱社製。* 5: Brand name, Kisuma 5A (average particle size 0.8)
μm), manufactured by Kyowa Chemical Co., Ltd. * 6: Product name, Zinc Borate 2335, U
Made by S Borax. * 7: Trade name, Empara 70 (chlorine content 70% by weight), manufactured by Ajinomoto Co., Inc. * 8: Trade name, AFR1001 (bromine content 87% by weight), manufactured by Asahi Glass Co., Ltd. * 9: Trade name, ATOX S, manufactured by Nippon Seiko Co., Ltd.
【００３８】＊10：商品名、バーゲスＮｏ．１０（平均
粒径0.５μｍ）、白石カルシウム社製。 ＊11：商品名、エードプラスＰ、水沢化学（株）製のセ
ピオライト。 ＊12：商品名、Ｂ−９２、（株）山口雲母工業所製。 ＊13：商品名、ＰＫ＃５０、丸尾カルシウム社製。* 10: Product name, Burgess No. 10 (average particle size 0.5 μm), manufactured by Shiraishi Calcium Co. * 11: Trade name, Aed Plus P, Sepiolite manufactured by Mizusawa Chemical Co., Ltd. * 12: Brand name, B-92, manufactured by Yamaguchi Mica Co., Ltd. * 13: Product name, PK # 50, manufactured by Maruo Calcium Co., Ltd.
【００３９】＊14：商品名、スーパーＳ（平均粒径4.２
μｍ）、丸尾カルシウム社製。 ＊15：太さ１〜５デニールを長さ２〜５ｍｍに裁断した
もの。 調製された各塗料を、絶縁体とシースがいずれもポリエ
チレンから成る電力ケーブルに乾燥後の膜厚が約１ｍｍ
となるように刷毛塗りして塗膜を形成した。この塗膜に
つき、以下の仕様で延焼防止効果、柔軟性、塩酸ガス発
生量、耐水性を調べた。* 14: Product name, Super S (average particle size 4.2
μm), manufactured by Maruo Calcium Co. * 15: A piece with a thickness of 1 to 5 denier cut into a length of 2 to 5 mm. Each of the prepared paints is applied to a power cable whose insulator and sheath are both made of polyethylene, and the film thickness after drying is approximately 1 mm.
A brush was applied to form a coating film. The coating film was examined for the effect of preventing fire spread, flexibility, amount of hydrochloric acid gas generation, and water resistance according to the following specifications.
【００４０】延焼防止効果：塗膜をプロパンガスバーナ
で１０分間加熱して塗膜の外殻を形成し、その外殻の状
態を観察。塗膜の外殻が脱落せずにそのまま電力ケーブ
ルを被覆している状態を○、外殻が開いたり、脱落した
状態を×として評価。上記試験で○と評価された塗料
を、改めて前記電力ケーブルの被覆に乾燥後の膜厚が１
mmとなるように塗布して塗膜を形成し、その塗膜に対し
ＩＥＥＥ ３８３で規定する垂直トレイ燃焼試験を行
い、塗膜の外殻の脱落が少なく良好な燃焼特性を示した
ものを◎として評価。Fire spread prevention effect: The coating film is heated with a propane gas burner for 10 minutes to form an outer shell of the coating film, and the state of the outer shell is observed. The case where the outer shell of the coating film does not fall off and the power cable is covered as it is is evaluated as ○, and the state where the outer shell opens or falls is evaluated as ×. The coating evaluated as ◯ in the above test was applied again to the coating of the power cable so that the film thickness after drying was 1
A coating film is formed by coating so that the thickness becomes mm, and a vertical tray burning test specified in IEEE 383 is performed on the coating film. Evaluated as.
【００４１】柔軟性：電力ケーブルを折り曲げたときの
塗膜の状態を観察。塗膜に割れやクラックが発生しない
場合を○、割れやクラックが発生した場合を×として評
価。 塩酸ガス発生量：ＪＣＳ Ｃ第５３号で規定する方法に
準拠して測定。塩酸ガスの発生量が３０ｍｇ／ｇ以下の
場合を○、発生した３０ｍｇ／ｇより多い場合を×とし
て評価。Flexibility: The state of the coating film when the power cable was bent was observed. The case where no cracks or cracks occur in the coating film is evaluated as ◯, and the case where cracks or cracks occur is evaluated as x. Hydrochloric acid gas generation rate: measured in accordance with the method specified in JCS C No. 53. The case where the amount of hydrochloric acid gas generated was 30 mg / g or less was evaluated as ◯, and the case where the amount of generated hydrochloric acid gas was more than 30 mg / g was evaluated as x.
【００４２】耐水性：電力ケーブルを常温下で１００時
間水に浸漬したのちの塗膜の状態、電力ケーブルとの密
着性を観察。塗膜に割れなどが発生せず外観良好である
場合を○、割れなどが発生して外観不良になった場合を
×として評価。また、各塗料については、それをエアレ
ススプレー機を用いてスプレー塗装に供して塗装性も調
べた。スプレーできた場合を○、ノズルが詰まってスプ
レーできなかった場合を×、スプレー後、塗料がダレ落
ちた場合をダレとして評価した。Water resistance: After immersing the power cable in water at room temperature for 100 hours, the state of the coating film and the adhesion with the power cable were observed. The case where the coating film does not have cracks and the appearance is good is evaluated as ◯, and the case where the coating film has cracks and the appearance is poor is evaluated as x. In addition, each paint was subjected to spray painting using an airless spray machine and the paintability was also examined. The case of being able to spray was evaluated as ◯, the case of not being able to spray due to the nozzle being clogged, and the case where the paint dripped after spraying was evaluated as sag.
【００４３】以上の結果を一括して表１、表２に示し
た。The above results are collectively shown in Tables 1 and 2.
【００４４】[0044]
【表１】 [Table 1]
【００４５】[0045]
【表２】 [Table 2]
【００４６】表１、表２から以下のことが明らかにな
る。 (1) まず、本発明の組成物は、燃焼時に、比較例１〜３
や比較例１０のように塩酸ガスを発生することがなく、
安全性に優れたものである。 (2) そして、この組成物で形成した塗膜の延焼防止効果
と柔軟性は、従来から公知の難燃剤（ハロゲン系炭化水
素）を含有する比較例１〜３や比較例１０の組成物で形
成した塗膜に比べてほぼ同等であるかまたは若干優れて
いる。The following is clear from Tables 1 and 2. (1) First, the composition of the present invention, when burned, Comparative Examples 1 to 3
And without generating hydrochloric acid gas as in Comparative Example 10,
It has excellent safety. (2) And the fire spread prevention effect and flexibility of the coating film formed with this composition are the compositions of Comparative Examples 1 to 3 and Comparative Example 10 containing a conventionally known flame retardant (halogenated hydrocarbon). It is almost equal to or slightly superior to the formed coating film.
【００４７】(3) また、耐水性は比較例１〜３や比較例
１０の組成物で形成した塗膜に比べて優れていて、長期
に亘って電力ケーブルの防火性能を維持することができ
る。 (4) 更に、本発明の組成物から成る塗料は塗装性も良好
であって、電力ケーブルなどへの施工性に優れている。 (5) また、各実施例と比較例５、比較例６とを比べてみ
ると明らかなように、本発明組成物の上記したような性
能は、クレーとマイカを同時に配合したことによっては
じめてもたらされている。しかし、その場合であって
も、比較例７で明らかなように、水酸化アルミニウムの
配合量が多くなると、延焼防止効果と柔軟性はいずれも
劣化してしまう。(3) Further, the water resistance is superior to the coating films formed from the compositions of Comparative Examples 1 to 3 and Comparative Example 10, and the fireproof performance of the power cable can be maintained for a long period of time. . (4) Furthermore, the coating material comprising the composition of the present invention has good coatability and is excellent in workability on power cables and the like. (5) Further, as is clear from comparing each example with Comparative Example 5 and Comparative Example 6, the above-mentioned performance of the composition of the present invention can be obtained even by mixing clay and mica at the same time. I'm being taken over. However, even in that case, as is clear from Comparative Example 7, when the blending amount of aluminum hydroxide increases, both the fire spread prevention effect and the flexibility deteriorate.
【００４８】(6)実施例７と実施例８（実施例７の組成
物にセピオライトを配合したもの）を比べて明らかなよ
うに、山皮（セピオライト）を配合した組成物の塗膜
は、延焼防止効果が非常に優れたものになる。 (7)しかし、セピオライトの配合量が多くなりすぎる
と、実施例１１と比較例９を比べて明らかなように、塗
膜の延焼防止効果と柔軟性が悪化してしまう。(6) As is apparent by comparing Example 7 and Example 8 (composition of Example 7 with sepiolite), the coating film of the composition with mountain bark (sepiolite) was The fire spread prevention effect is very excellent. (7) However, if the blending amount of sepiolite is too large, as is clear from comparison between Example 11 and Comparative Example 9, the spread preventing effect and flexibility of the coating film deteriorate.
【００４９】[0049]
【発明の効果】以上の説明で明らかなように、請求項１
の防火塗料組成物で形成した塗膜は、火災に遭遇したと
きに、塩酸ガスのような有毒ガスを発生することがな
く、硬い外殻を形成してその下に位置する樹脂などが溶
融して流出するという事態を防止し、もって当該樹脂の
延焼を防ぐことができる。As is apparent from the above description, claim 1
When a fire encounters a fire, the coating film formed with the fire-preventive coating composition does not generate a toxic gas such as hydrochloric acid gas, forms a hard outer shell, and the resin and the like located below it melts. It is possible to prevent the situation where the resin flows out, and thus to prevent the spread of the resin.
【００５０】また、形成した塗料は柔軟であり、しかも
塗膜形成時には、スプレー塗装や刷毛塗りなどの方法で
ダレ落ちを起こすことなく塗装することができ、その施
工性は優れている。そして、請求項２、３の防火塗料組
成物の場合は、耐水性や耐候性が良好になり、形成され
た塗膜は長期に亘って、その性能を維持することができ
る。Further, the formed coating material is flexible, and when the coating film is formed, it can be coated by a method such as spray coating or brush coating without causing dripping, and its workability is excellent. In the case of the fireproof coating composition of claims 2 and 3, the water resistance and weather resistance are improved, and the formed coating film can maintain its performance for a long period of time.
【００５１】また、請求項５の電線または電力ケーブル
は、上記した効果を発揮する防火塗料組成物で表面が被
覆されているので、火災遭遇時にあっても延焼に伴う損
失を少なくすることができる。Further, since the surface of the electric wire or the electric power cable of claim 5 is coated with the fire-preventive coating composition exhibiting the above-mentioned effects, the loss due to the spread of fire can be reduced even when a fire is encountered. .
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０９Ｄ 133/08 ＰＧＢ Ｃ０９Ｄ 133/08 ＰＧＢ ＰＧＦ ＰＧＦ (72)発明者 浜崎 徳広 神奈川県平塚市東八幡五丁目１番８号 株 式会社古河テクノマテリアル内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display location C09D 133/08 PGB C09D 133/08 PGB PGF PGF (72) Inventor Hamasaki Tokuhiro Higashi-Hachimango, Hiratsuka-shi, Kanagawa Furukawa Techno Material Co., Ltd. 1-8
Claims (5)
（ただし、乾燥重量に換算のときの値）、金属水和物３
０〜７０重量％、クレーまたは／および山皮１〜９重量
％、ならびに、マイカ５〜２０重量％を含有することを
特徴とする防火塗料組成物。1. Synthetic resin emulsion 20 to 40% by weight
(However, the value when converted to dry weight), metal hydrate 3
0 to 70% by weight, 1 to 9% by weight of clay or / and mountain bark, and 5 to 20% by weight of mica.
−酢酸ビニルエマルジョンとアクリル酸エステルエマル
ジョンとから成る請求項１の防火塗料組成物。2. The fireproof coating composition according to claim 1, wherein the synthetic resin emulsion comprises an ethylene-vinyl acetate emulsion and an acrylic ester emulsion.
割合が、乾燥重量に換算して、合成樹脂エマルジョン全
体に対して１〜５０重量％である請求項２の防火塗料組
成物。3. The fire-preventive coating composition according to claim 2, wherein the proportion of the acrylic ester emulsion is 1 to 50% by weight based on the total weight of the synthetic resin emulsion in terms of dry weight.
または／および水酸化マグネシウムである請求項１の防
火塗料組成物。4. The fireproof coating composition according to claim 1, wherein the metal hydrate is aluminum hydroxide and / or magnesium hydroxide.
塗膜が形成されていることを特徴とする電線または電力
ケーブル。5. An electric wire or a power cable, wherein a coating film of the fireproof coating composition according to claim 1 is formed on an outer surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18744995 | 1995-07-24 | ||
| JP7-187449 | 1995-07-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0995630A true JPH0995630A (en) | 1997-04-08 |
Family
ID=26350450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8014502A Pending JPH0995630A (en) | 1995-07-24 | 1996-01-30 | Fire-retarding coating composition and electric wire or electric power cable coated therewith |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0995630A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1183306A1 (en) | 1999-05-07 | 2002-03-06 | Süd-Chemie Ag | Flameproof polymer composition |
| FR2870543A1 (en) * | 2004-05-21 | 2005-11-25 | Nexans Sa | FIRE RESISTANT CABLE |
| WO2006132452A1 (en) * | 2005-06-08 | 2006-12-14 | Ls Cable Ltd. | Halogen-free flame retardant composition for cable covering material and cable for railway vehicles using the same |
| US7504451B1 (en) | 1999-04-30 | 2009-03-17 | Rockwood Clay Additives, Gmbh | Fire retardant compositions |
| US7528191B2 (en) | 2003-01-08 | 2009-05-05 | Rockwood Clay Additives, Gmbh | Composition based on pre-exfoliated nanoclay and use thereof |
| US7867614B2 (en) | 2003-06-12 | 2011-01-11 | Rockwood Clay Additives, Gmbh | Method for producing nanocomposite additives with improved delamination in polymers |
| EP1177252B2 (en) † | 1999-04-30 | 2011-09-14 | Rockwood Clay Additives GmbH | Fire retardant compositions |
| EP2418976A1 (en) * | 2009-04-16 | 2012-02-22 | Celanese International Corporation | Fire retardant fabric and/or apparel |
-
1996
- 1996-01-30 JP JP8014502A patent/JPH0995630A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7504451B1 (en) | 1999-04-30 | 2009-03-17 | Rockwood Clay Additives, Gmbh | Fire retardant compositions |
| EP1177252B2 (en) † | 1999-04-30 | 2011-09-14 | Rockwood Clay Additives GmbH | Fire retardant compositions |
| EP1183306A1 (en) | 1999-05-07 | 2002-03-06 | Süd-Chemie Ag | Flameproof polymer composition |
| US7528191B2 (en) | 2003-01-08 | 2009-05-05 | Rockwood Clay Additives, Gmbh | Composition based on pre-exfoliated nanoclay and use thereof |
| US7867614B2 (en) | 2003-06-12 | 2011-01-11 | Rockwood Clay Additives, Gmbh | Method for producing nanocomposite additives with improved delamination in polymers |
| FR2870543A1 (en) * | 2004-05-21 | 2005-11-25 | Nexans Sa | FIRE RESISTANT CABLE |
| WO2006132452A1 (en) * | 2005-06-08 | 2006-12-14 | Ls Cable Ltd. | Halogen-free flame retardant composition for cable covering material and cable for railway vehicles using the same |
| US7759580B2 (en) | 2005-06-08 | 2010-07-20 | Ls Cable Ltd. | Halogen-free flame retardant composition for cable covering material and cable for railway vehicles using the same |
| EP2418976A1 (en) * | 2009-04-16 | 2012-02-22 | Celanese International Corporation | Fire retardant fabric and/or apparel |
| EP2418976A4 (en) * | 2009-04-16 | 2012-10-10 | Celanese Int Corp | Fire retardant fabric and/or apparel |
| JP2012524176A (en) * | 2009-04-16 | 2012-10-11 | セラニーズ・インターナショナル・コーポレイション | Flame retardant fabric and / or ready-made clothing |
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