JP4693639B2 - Asbestos scattering prevention method - Google Patents
Asbestos scattering prevention method Download PDFInfo
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- JP4693639B2 JP4693639B2 JP2006016428A JP2006016428A JP4693639B2 JP 4693639 B2 JP4693639 B2 JP 4693639B2 JP 2006016428 A JP2006016428 A JP 2006016428A JP 2006016428 A JP2006016428 A JP 2006016428A JP 4693639 B2 JP4693639 B2 JP 4693639B2
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- 239000010425 asbestos Substances 0.000 title claims description 78
- 229910052895 riebeckite Inorganic materials 0.000 title claims description 78
- 238000000034 method Methods 0.000 title claims description 12
- 230000002265 prevention Effects 0.000 title claims 2
- 229920002050 silicone resin Polymers 0.000 claims description 37
- 239000011248 coating agent Substances 0.000 claims description 28
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 16
- 239000002736 nonionic surfactant Substances 0.000 claims description 11
- 239000002904 solvent Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 10
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000011230 binding agent Substances 0.000 claims description 8
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 claims description 8
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- 239000011342 resin composition Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 4
- 238000007865 diluting Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 36
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 14
- 239000004567 concrete Substances 0.000 description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 9
- 239000003960 organic solvent Substances 0.000 description 9
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 8
- 238000009835 boiling Methods 0.000 description 8
- 239000011247 coating layer Substances 0.000 description 8
- 229920001296 polysiloxane Polymers 0.000 description 8
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 6
- 238000007667 floating Methods 0.000 description 5
- 239000004566 building material Substances 0.000 description 4
- -1 methacryloxy group Chemical group 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
- 239000010454 slate Substances 0.000 description 4
- 239000002966 varnish Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 239000003085 diluting agent Substances 0.000 description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 3
- 150000003333 secondary alcohols Chemical class 0.000 description 3
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 2
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 2
- BBMCTIGTTCKYKF-UHFFFAOYSA-N 1-heptanol Chemical compound CCCCCCCO BBMCTIGTTCKYKF-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 125000003700 epoxy group Chemical group 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- ZSIAUFGUXNUGDI-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO ZSIAUFGUXNUGDI-UHFFFAOYSA-N 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- ZWRUINPWMLAQRD-UHFFFAOYSA-N nonan-1-ol Chemical compound CCCCCCCCCO ZWRUINPWMLAQRD-UHFFFAOYSA-N 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 description 1
- LCZVSXRMYJUNFX-UHFFFAOYSA-N 2-[2-(2-hydroxypropoxy)propoxy]propan-1-ol Chemical compound CC(O)COC(C)COC(C)CO LCZVSXRMYJUNFX-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 description 1
- GXVDVJQTXFTVMP-UHFFFAOYSA-N 4-methoxypentan-2-ol Chemical compound COC(C)CC(C)O GXVDVJQTXFTVMP-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- UWHCKJMYHZGTIT-UHFFFAOYSA-N Tetraethylene glycol, Natural products OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- WHGNXNCOTZPEEK-UHFFFAOYSA-N dimethoxy-methyl-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](C)(OC)CCCOCC1CO1 WHGNXNCOTZPEEK-UHFFFAOYSA-N 0.000 description 1
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 208000006178 malignant mesothelioma Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- PHQOGHDTIVQXHL-UHFFFAOYSA-N n'-(3-trimethoxysilylpropyl)ethane-1,2-diamine Chemical compound CO[Si](OC)(OC)CCCNCCN PHQOGHDTIVQXHL-UHFFFAOYSA-N 0.000 description 1
- MQWFLKHKWJMCEN-UHFFFAOYSA-N n'-[3-[dimethoxy(methyl)silyl]propyl]ethane-1,2-diamine Chemical compound CO[Si](C)(OC)CCCNCCN MQWFLKHKWJMCEN-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/49—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes
- C04B41/4905—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon
- C04B41/495—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon applied to the substrate as oligomers or polymers
Description
本発明は、アスベストと無機バインダとを含むアスベスト含有層を表面に備える建物の壁や天井面などの造営面、あるいは、スレート板等の建築材料からアスベストの飛散を防止する方法に関する。 The present invention relates to a method for preventing scattering of asbestos from a building surface such as a building wall or a ceiling surface provided with an asbestos-containing layer containing asbestos and an inorganic binder, or a building material such as a slate plate.
セメントなどの無機バインダにアスベストを混ぜて吹き付けるようにした吹付けアスベストは、建築物の壁面や天井面に吹き付けて無機バインダを硬化させるだけで簡易に耐火性能の高い耐火被覆層を形成することができることから、過去において盛んに用いられていたが、アスベスト（石綿）は、悪性中皮腫等の健康被害の原因となることから、昭和５０年１０月から吹付けアスベストの吹付け作業が原則禁止された。また、住宅屋根用化粧スレート、外装サイディング等の無機建材へのアスベストの使用も平成１６年１０月から原則禁止されている。 Sprayed asbestos that mixes and sprays asbestos with an inorganic binder such as cement can easily form a fire-resistant coating layer with high fire resistance simply by spraying it on the wall or ceiling of the building and curing the inorganic binder. Asbestos has been widely used in the past, but asbestos (asbestos) is a cause of health damage such as malignant mesothelioma. It was done. In principle, the use of asbestos in inorganic building materials such as residential roof slate and exterior siding has been prohibited since October 2004.
しかしながら、吹付けアスベストを耐火被覆層として使用したり、アスベスト入りの住宅屋根用化粧スレート、外装サイディング等を使用したりした建築物は、多数残っており、これらの建築物の解体時や補修工事等において、アスベストの大気中への飛散が大きな問題となっている。また、解体や補修工事を行なわない場合であっても、無機バインダの
劣化により、吹付けアスベストの耐火被覆層中からのアスベストの飛散を防止する方法として、耐火被覆層表面に塗料等の処理剤を塗布する方法がすでに提案されている（たとえば、特許文献１参照）。
However, there are still many buildings that use sprayed asbestos as a fireproof covering layer, or use asbestos-containing residential roof slate, exterior siding, etc., and when these buildings are dismantled or repaired As a result, scattering of asbestos into the atmosphere is a major problem. In addition, even when dismantling and repair work are not performed, a treatment agent such as paint on the surface of the fireproof coating layer as a method of preventing the scattering of asbestos from the fireproof coating layer of the sprayed asbestos due to deterioration of the inorganic binder There has already been proposed a method of applying the coating (for example, see Patent Document 1).
しかしながら、既存の処理剤では、 耐火被覆層の表面部分からの飛散を一次的に防止できても、耐火被覆層の表面部分のみに処理剤が塗布されているだけであるので、建築物の老朽化がすすみ、建築物の解体などの際にはやはりアスベストが飛散するという問題がある。
また、耐火被覆層の表面から内部に向かって注入管を挿入し、注入装置で上記処理剤を注入すれば、耐火被覆層全体に処理剤を行き渡らせることはできるが、作業性が悪いとともに、硬化物の重量が大きいため、耐火被覆層が、硬化物の重量で天井面から剥がれ落ちるという問題がある。また、処理剤として有機系塗料を用いた場合においては、耐火性能に問題が出る虞があった。
However, even with the existing treatment agent, even if the scattering from the surface portion of the refractory coating layer can be temporarily prevented, the treatment agent is only applied to the surface portion of the refractory coating layer. There is a problem that asbestos scatters in the case of the progress of conversion and the dismantling of buildings.
Also, if an injection tube is inserted from the surface of the refractory coating layer toward the inside and the treatment agent is injected with an injection device, the treatment agent can be distributed throughout the refractory coating layer, but the workability is poor, Since the weight of the cured product is large, there is a problem that the fireproof coating layer is peeled off from the ceiling surface by the weight of the cured product. In addition, when an organic paint is used as the treating agent, there is a possibility that a problem may occur in fire resistance.
本発明は、上記事情に鑑みて、アスベストと無機バインダとを含むアスベスト含有層を少なくとも表面に備える造営面または建築材料の耐火性能を損なわず、また、アスベスト含有層の重量をあまり増大させることなくアスベストの飛散を防止することができ、かつ、アスベスト含有層を撤去する際、撤去後においても飛散がなく安全性を確保できるアスベスト飛散防止方法を提供することを目的としている。 In view of the above circumstances, the present invention does not impair the fire resistance performance of a construction surface or building material provided with at least an asbestos-containing layer containing asbestos and an inorganic binder, and does not increase the weight of the asbestos-containing layer so much. An object of the present invention is to provide a method for preventing asbestos scattering that can prevent the asbestos from being scattered and can ensure safety when the asbestos-containing layer is removed without scattering even after the removal.
上記目的を達成するために、本発明にかかるアスベスト飛散防止方法は、ストレートシリコーン樹脂及びシランカップリング剤を含むストレートシリコーン樹脂組成物と、アルコールと、非イオン系界面活性剤とからなる混合液が、水、n-ヘキサン、n-ペプタン、リグロインからなる群より選ばれた希釈溶媒で希釈されたコーティング剤を、アスベストと無機バインダとを含むアスベスト含有層の表面側から塗布して、コーティング剤を前記アスベスト含有層の裏面側まで浸透させたのち、コーティング剤中の前記ストレートシリコーン樹脂を硬化させることによって、アスベスト含有層中のアスベストを、その表面が硬化したストレートシリコーン樹脂によってコートされるとともに、つながった状態にすることを特徴としている。 In order to achieve the above object, the method for preventing asbestos scattering according to the present invention comprises a mixed liquid comprising a straight silicone resin composition containing a straight silicone resin and a silane coupling agent, an alcohol, and a nonionic surfactant. A coating agent diluted with a diluent solvent selected from the group consisting of water, n-hexane, n-peptane, and ligroin is applied from the surface side of the asbestos-containing layer containing asbestos and an inorganic binder. After infiltrating to the back side of the asbestos-containing layer, by curing the straight silicone resin in the coating agent, the asbestos in the asbestos-containing layer is coated with a straight silicone resin whose surface is cured and connected. It is characterized by being in a state .
本発明において、造営面とは、天井面、建物内壁面、建物外壁面、建物床面などを意味する。
建築材料とは、アスベスト含有層を備えているものであれば、特に限定されないが、たとえば、スレート板、サイディングボード等が挙げられる。
In the present invention, the construction surface means a ceiling surface, a building inner wall surface, a building outer wall surface, a building floor surface, and the like.
Although it will not specifically limit if a construction material is provided with an asbestos content layer, For example, a slate board, a siding board, etc. are mentioned.
本発明で使用されるコーティング剤に含まれるストレートシリコーン樹脂は、R2Si(OH)2(式中Rはメチル基またはフェニル基)であらわされるモノマー、および、RSi(OH)3(式中Rはメチル基またはフェニル基)であらわされるモノマーを反応させて得られる主鎖がSi-O-Siである分岐度の高い3次元オリゴマーで未反応の水酸基を残しているものである。 The straight silicone resin contained in the coating agent used in the present invention includes a monomer represented by R 2 Si (OH) 2 (wherein R is a methyl group or a phenyl group), and RSi (OH) 3 (wherein R Is a three-dimensional oligomer having a high degree of branching in which the main chain obtained by reacting a monomer represented by a methyl group or a phenyl group is Si—O—Si, leaving an unreacted hydroxyl group.
本発明のコーティング剤に用いられるシランカップリング剤としては、
XnSi(OCH3)4-n（Ｘはアミノ基、エポキシ基、メタクリロキシ基、メチル基、エチル基のいずれか）であらわされるものが好適に用いられる。
As the silane coupling agent used in the coating agent of the present invention,
X n Si (OCH 3) 4 -n (X is an amino group, an epoxy group, a methacryloxy group, a methyl group, or ethyl group) those represented by suitably used.
また、上記ストレートシリコーン樹脂は、予め希釈溶媒とは別の沸点110℃以下の低沸点有機溶媒に溶解させておいてもよい。
低沸点有機溶媒としては、沸点110℃以下であれば、特に限定されないが、たとえば、トルエン、キシレン、リグロインやこれらの混合物等が挙げられる。
The straight silicone resin may be previously dissolved in a low-boiling organic solvent having a boiling point of 110 ° C. or lower, which is different from the dilution solvent.
The low boiling point organic solvent is not particularly limited as long as it has a boiling point of 110 ° C. or lower, and examples thereof include toluene, xylene, ligroin, and a mixture thereof.
また、上記のように、ストレートシリコーン樹脂を低沸点有機溶媒に溶解させる態様においては、ストレートシリコーン樹脂溶液は、低沸点有機溶媒がトルエンであって、ストレートシリコーン樹脂濃度が５０重量％であるときの、動粘度が０．１〜１００センチストークスであることが好ましい。また、得られるコーティング剤の動粘度を、０．１〜１０センチストークスとすることが好ましく、０．８〜９．５センチストークスとすることがより好ましい。 Further, as described above, in the embodiment in which the straight silicone resin is dissolved in the low boiling point organic solvent, the straight silicone resin solution is obtained when the low boiling point organic solvent is toluene and the straight silicone resin concentration is 50% by weight. The kinematic viscosity is preferably 0.1 to 100 centistokes. The kinematic viscosity of the resulting coating agent is preferably 0.1 to 10 centistokes, and more preferably 0.8 to 9.5 centistokes.
さらに、上記ストレートシリコーン樹脂としては、特に限定されないが、ストレートシリコーン樹脂に予め低沸点有機溶媒およびシランカップリング剤が配合された市販のストレートシリコーン樹脂組成物、たとえば、東レ・ダウコーニング・シリコーン株式会社製ストレートシリコーンワニス品名SR2406(有機溶媒トルエン、ストレートシリコーン樹脂濃度50重量％)、東レ・ダウコーニング・シリコーン株式会社製ストレートシリコーンワニス品名SR2410(有機溶媒トルエン、リグロイン、ストレートシリコーン樹脂濃度23重量％)、信越化学工業株式会社製ストレートシリコーンワニス品名KR255(有機溶媒トルエン、キシレン、ストレートシリコーン樹脂濃度50重量％)等を使用することができる。 Further, the straight silicone resin is not particularly limited, but a commercially available straight silicone resin composition in which a low-boiling organic solvent and a silane coupling agent are blended in advance with the straight silicone resin, such as Toray Dow Corning Silicone Co., Ltd. Straight silicone varnish product name SR2406 (organic solvent toluene, straight silicone resin concentration 50 wt%), straight silicone varnish product name SR2410 (organic solvent toluene, ligroin, straight silicone resin concentration 23 wt%) manufactured by Toray Dow Corning Silicone Co., Ltd., A straight silicone varnish product name KR255 (organic solvent toluene, xylene, straight silicone resin concentration 50% by weight) manufactured by Shin-Etsu Chemical Co., Ltd. can be used.
上記XnSi(OCH3)4-n（Ｘはアミノ基、エポキシ基、メタクリロキシ基、メチル基、エチル基のいずれか）であらわされるシランカップリング剤としては、特に限定されないが、たとえば、γ−アミノプロピルトリメトキシシラン，３−（２−アミノエチル）アミノプロピルトリメトキシシラン，３−（２−アミノエチル）アミノプロピルメチルジメトキシシラン等のアミノシラン，３−グリシドキシプロピルトリメトキシシラン、３−グリシドキシプロピルメチルジメトキシシラン等のエポキシシランなどが挙げられる。 The silane coupling agent represented by the above X n Si (OCH 3 ) 4-n (X is any one of an amino group, an epoxy group, a methacryloxy group, a methyl group, and an ethyl group) is not particularly limited. -Amino silane such as aminopropyltrimethoxysilane, 3- (2-aminoethyl) aminopropyltrimethoxysilane, 3- (2-aminoethyl) aminopropylmethyldimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3- And epoxy silanes such as glycidoxypropylmethyldimethoxysilane.
非イオン界面活性剤としては、特に限定されないが、たとえば、セカンダリーアルコールエーテル(EO)6・(PO)付加物、セカンダリーアルコールエーテル(EO)7・(PO)付加物、セカンダリーアルコールエーテル (EO)8・(PO)付加物等のアルキルエーテル型非イオン界面活性剤で親水基であるエトキシ基(EO)・プロポキシ基(PO)を分子中に３〜１５個、好ましくは4〜12個を含み、その配列が偶数配列、奇数配列、又その混交で、配列中に必ずPO基を1つ挟むものととともに、炭素数でC10〜C18の親油基を側鎖に持つものが好ましく、これらを複数混合して用いることがより好ましい。 The nonionic surfactant is not particularly limited. For example, secondary alcohol ether (EO) 6 / (PO) adduct, secondary alcohol ether (EO) 7 / (PO) adduct, secondary alcohol ether (EO) 8 -It contains 3-15, preferably 4-12 ethoxy groups (EO) and propoxy groups (PO), which are hydrophilic groups in alkyl ether type nonionic surfactants such as (PO) adducts, Preferably, the sequence is an even number sequence, an odd number sequence, or a mixture thereof, which always has one PO group in the sequence, and a C 10 to C 18 lipophilic group in the side chain in the sequence. It is more preferable to use a mixture of two or more.
アルコールとしては、特に限定されないが、２５℃で液体であるものが好ましく、たとえば、メタノール、エタノール、プロパノール、ペンタノール、ヘキサノール、ヘプタノール、オクタノール、ノナノール、デカノール、３−メトキシ−メチルブタノール、エチレングリコール、ジエチレングリコール、トリエチレングリコール、テトラエチレングリコール、プロピレングリコール、ジプロピレングリコール、トリプロピレングリコール、テオリメチレングリコール、ブチルカルビトール、１，３−ブタンジオール、テトラメチレングリコール、エチレングリコールモノブチルエーテルなどが挙げられ、メタノール、エタノール、プロパノール、ブタノール等のＣ４以下のものが好ましく、イソプロピルアルコールが特に好ましい。 Although it does not specifically limit as alcohol, What is liquid at 25 degreeC is preferable, For example, methanol, ethanol, propanol, pentanol, hexanol, heptanol, octanol, nonanol, decanol, 3-methoxy-methylbutanol, ethylene glycol, Diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, theorimethylene glycol, butyl carbitol, 1,3-butanediol, tetramethylene glycol, ethylene glycol monobutyl ether, etc. , Ethanol, propanol, butanol and the like are preferable, and isopropyl alcohol is particularly preferable.
希釈溶媒としては、環境面を考慮すれば、水が好ましいが、たとえば、電気配線等の水が不適な場所に用いる場合は、ｎ−ヘキサン、ｎ−ヘプタン、リグロイン等の有機溶剤が挙げられる。
コーティング剤中の各成分の配合割合は、ストレートシリコーン樹脂の種類によって適宜決定されるが、因みに、ストレートシリコーン樹脂として、上記東レ・ダウコーニング・シリコーン株式会社製ストレートシリコーンワニス品名SR2410を用いるとともに、アルコールとしてイソプロパノールを用いた場合、SR2410と、イソプロパノールとを容量比で１：１で混合するとともに、この混合物に１０容量％程度の非イオン系活性剤を添加したものに、これらの総計の１倍〜５倍量の希釈溶媒を加えることが好ましい。
As the diluting solvent, water is preferable in consideration of the environmental aspect. For example, when used in a place where water such as electric wiring is inappropriate, organic solvents such as n-hexane, n-heptane, and ligroin can be used.
The blending ratio of each component in the coating agent is appropriately determined depending on the type of straight silicone resin.For this reason, the straight silicone varnish product name SR2410 manufactured by Toray Dow Corning Silicone Co., Ltd. is used as the straight silicone resin. When isopropanol is used as a mixture, SR2410 and isopropanol are mixed at a volume ratio of 1: 1, and about 10% by volume of a nonionic active agent is added to the mixture. It is preferable to add 5 times the amount of dilution solvent.
また、上記コーティング剤には、本発明の目的を損なわない範囲で、必要に応じ、性能向上用塗膜強固剤、希釈溶剤、安定化溶剤、凍結防止剤、防腐剤、研磨剤、紫外線吸収剤、色素、二酸化チタン等の光触媒などを配合することができる。 In addition, the above coating agent may be used to improve the performance of the coating film strengthening agent, diluting solvent, stabilizing solvent, antifreezing agent, preservative, polishing agent, and UV absorber as long as the object of the present invention is not impaired. In addition, a photocatalyst such as a dye or titanium dioxide can be blended.
本発明にかかるアスベスト飛散防止方法は、以上のように、ストレートシリコーン樹脂及びシランカップリング剤を含むストレートシリコーン樹脂組成物と、アルコールと、非イオン系界面活性剤とからなる混合液が、水、n-ヘキサン、n-ペプタン、リグロインからなる群より選ばれた希釈溶媒で希釈されたコーティング剤を、アスベストと無機バインダとを含むアスベスト含有層の表面側から塗布して、コーティング剤を前記アスベスト含有層の裏面側まで浸透させたのち、コーティング剤中の前記ストレートシリコーン樹脂を硬化させることによって、アスベスト含有層中のアスベストを、その表面が硬化したストレートシリコーン樹脂によってコートされるとともに、つながった状態にするので、短時間の作業で容易にアスベスト含有層を有する造営面や建築材料表面からアスベストの飛散しない状態にすることができる。 As described above, the method for preventing asbestos scattering according to the present invention is a mixture of a straight silicone resin composition containing a straight silicone resin and a silane coupling agent, an alcohol, and a nonionic surfactant, water, A coating agent diluted with a diluent solvent selected from the group consisting of n-hexane, n-peptane, and ligroin is applied from the surface side of the asbestos-containing layer containing asbestos and an inorganic binder, and the coating agent contains the asbestos. After penetrating to the back side of the layer, by curing the straight silicone resin in the coating agent, the asbestos in the asbestos-containing layer is coated with a straight silicone resin whose surface is cured and in a connected state. Asbestos-containing layer easily in a short time Asbestos can be prevented from scattering from the construction surface or the surface of the building material.
また、ストレートシリコーン樹脂硬化物は、６００℃以上の耐火性能があり、本来のアスベスト含有層の耐火・耐熱性能を損なうことがないとともに、軽量であるため、重量増により、アスベスト含有層が天井や壁から剥離したりすることがない。しかも、建物の解体時においても、アスベストの飛散・浮遊もない。 In addition, the cured product of straight silicone resin has a fire resistance of 600 ° C. or higher, does not impair the fire resistance and heat resistance performance of the original asbestos-containing layer, and is light in weight. No peeling from the wall. Moreover, there is no scattering or floating of asbestos even when the building is demolished.
さらに、アスベストがストレートシリコーン樹脂硬化物によって包まれているので、解体した際に発生する廃材を粉砕しても肺内に達するような微細粉になることがないので、プラスチック材料の充填剤や、コンクリート製品の充填剤としても再利用することもできる。 In addition, asbestos is wrapped in straight silicone resin hardened material, so even if the waste material generated when disassembled is crushed, it does not become a fine powder that reaches the lungs. It can also be reused as a filler for concrete products.
以下に、本発明の実施の形態の１例を説明するが、本発明は以下の実施の形態に限定されるわけではない。 An example of the embodiment of the present invention will be described below, but the present invention is not limited to the following embodiment.
(実施例１)
ストレートシリコーン樹脂が低沸点溶媒に溶解されるとともにシランカップリング剤を含むストレートシリコーン樹脂組成物としての東レ・ダウコーニング・シリコーン株式会社製ストレートシリコーンワニス品名SR2410と、イソプロピルアルコールとを容量比１：１で混合した混合液に、以下に示す組成の非イオン界面活性剤（エコ・２４社製 品名マイクロ２４）を１０容量％配合したのち、さらに、混合液と非イオン界面活性剤の合計の５倍量の精製水を加え攪拌してコーティング剤を調製した。
〔非イオン界面活性剤の組成〕
・ポリオキシアルコールエーテル(EO)7・(PO)付加物（Ｃ１２以下）・・・12.0容量％
・ポリアルキルグリコール (EO)6・(PO)付加物（Ｃ１２以下） ・・・ 2.0容量％
・グリコール系溶剤 ・・・40.0容量％
・水 ・・・46.0容量％
(Example 1)
A straight silicone resin dissolved in a low-boiling solvent and containing a silane coupling agent, a straight silicone resin composition SR2410 manufactured by Toray Dow Corning Silicone Co., Ltd. and isopropyl alcohol in a volume ratio of 1: 1. After blending 10% by volume of the nonionic surfactant (Eco / 24 product name Micro 24) with the composition shown below into the mixed solution mixed in step 5, further 5 times the total of the mixed solution and the nonionic surfactant An amount of purified water was added and stirred to prepare a coating agent.
[Composition of nonionic surfactant]
・ Polyoxy alcohol ether (EO) 7・ (PO) adduct (C12 or less) ・ ・ ・ 12.0% by volume
・ Polyalkyl glycol (EO) 6・ (PO) adduct (C12 or less) ・ ・ ・ 2.0% by volume
・ Glycol solvent: 40.0% by volume
・ Water: 46.0% by volume
上記のようにして得られたコーティング剤を厚さ３ｃｍの吹付けアスベスト層が表面に形成された鉄骨コンクリート製建築物の壁面に１５０〜２００ｇ／ｍ2の割合となるようにスプレーした。そして、手で吹付けアスベスト層表面を触ったところ、３時間で乾燥した状態（硬化状態）となった。 The coating agent obtained as described above was sprayed at a rate of 150 to 200 g / m 2 on the wall surface of the steel-concrete building on which the sprayed asbestos layer having a thickness of 3 cm was formed. When the surface of the sprayed asbestos layer was touched by hand, it became dry (cured state) in 3 hours.
その後、吹付けアスベスト層を基材コンクリートから剥がしたところ、吹付けアスベスト層の基材コンクリートとの界面までコーティング剤が浸透し、シリコーン樹脂が硬化しているとともに、吹付けアスベスト層を剥がす際にアスベストの飛散や浮遊は認められなかった。
また、剥離した吹付けアスベスト層の断面を電子顕微鏡で調べたところ、アスベストがシリコーン樹脂硬化物でコートされた状態でつながっているのが見られた。
After that, when the sprayed asbestos layer was peeled off from the base concrete, the coating agent penetrated to the interface of the sprayed asbestos layer with the base concrete, the silicone resin was cured, and when the sprayed asbestos layer was peeled off No asbestos scattering or floating was observed.
Moreover, when the cross section of the peeled sprayed asbestos layer was examined with an electron microscope, it was found that asbestos was connected in a state coated with a cured silicone resin.
(実施例２)
実施例１と同様にして得られたコーティング剤を厚さ３．５ｃｍの吹付けアスベスト層が表面に形成された鉄骨コンクリート製建築物の壁面に１５０〜２００ｇ／ｍ2の割合となるようにスプレーした。そして、手で吹付けアスベスト層表面を触ったところ、３時間で乾燥した状態（硬化状態）となった。
その後、吹付けアスベスト層を基材コンクリートから剥がしたところ、吹付けアスベスト層の基材コンクリートとの界面までコーティング剤が浸透し、シリコーン樹脂が硬化しているとともに、吹付けアスベスト層を剥がす際にアスベストの飛散や浮遊は認められなかった。
(Example 2)
The coating agent obtained in the same manner as in Example 1 is sprayed on the wall surface of a steel-concrete building having a sprayed asbestos layer having a thickness of 3.5 cm on the surface so as to have a ratio of 150 to 200 g / m 2. did. When the surface of the sprayed asbestos layer was touched by hand, it became dry (cured state) in 3 hours.
After that, when the sprayed asbestos layer was peeled off from the base concrete, the coating agent penetrated to the interface of the sprayed asbestos layer with the base concrete, the silicone resin was cured, and when the sprayed asbestos layer was peeled off No asbestos scattering or floating was observed.
（実施例３）
水に代えて、希釈溶媒として５倍量のｎ−ヘプタンを用いた以外は、実施例１と同様にしてコーティング剤を得た。
上記のようにして得られたコーティング剤を厚さ３ｃｍの吹付けアスベスト層が表面に形成された鉄骨コンクリート製建築物の壁面に２００〜３５０ｇ／ｍ2の割合となるようにスプレーした。そして、手で吹付けアスベスト層表面を触ったところ、１．５時間で乾燥した状態（硬化状態）となった。
(Example 3)
A coating agent was obtained in the same manner as in Example 1 except that 5-fold amount of n-heptane was used as a diluent solvent instead of water.
The coating agent obtained as described above was sprayed at a rate of 200 to 350 g / m 2 on the wall surface of the steel-concrete building on which the sprayed asbestos layer having a thickness of 3 cm was formed. When the surface of the sprayed asbestos layer was touched by hand, it was in a dry state (cured state) in 1.5 hours.
その後、吹付けアスベスト層を基材コンクリートから剥がしたところ、吹付けアスベスト層の基材コンクリートとの界面までコーティング剤が浸透し、シリコーン樹脂が硬化しているとともに、吹付けアスベスト層を剥がす際にアスベストの飛散や浮遊は認められなかった。
また、剥離した吹付けアスベスト層の断面を電子顕微鏡で調べたところ、アスベストがシリコーン樹脂硬化物でコートされた状態でつながっているのが見られた。
After that, when the sprayed asbestos layer was peeled off from the base concrete, the coating agent penetrated to the interface of the sprayed asbestos layer with the base concrete, the silicone resin was cured, and when the sprayed asbestos layer was peeled off No asbestos scattering or floating was observed.
Moreover, when the cross section of the peeled sprayed asbestos layer was examined with an electron microscope, it was found that asbestos was connected in a state coated with a cured silicone resin.
(実施例４)
実施例３と同様にして得られたコーティング剤を厚さ３．５ｃｍの吹付けアスベスト層が表面に形成された鉄骨コンクリート製建築物の壁面に２００〜３５０ｇ／ｍ2の割合となるようにスプレーした。そして、手で吹付けアスベスト層表面を触ったところ、２時間で乾燥した状態（硬化状態）となった。
その後、吹付けアスベスト層を基材コンクリートから剥がしたところ、吹付けアスベスト層の基材コンクリートとの界面までコーティング剤が浸透し、シリコーン樹脂が硬化しているとともに、吹付けアスベスト層を剥がす際にアスベストの飛散や浮遊は認められなかった。
Example 4
The coating agent obtained in the same manner as in Example 3 was sprayed on the wall surface of a steel-concrete building having a sprayed asbestos layer having a thickness of 3.5 cm so as to have a ratio of 200 to 350 g / m 2. did. And when the surface of the sprayed asbestos layer was touched by hand, it was in a dry state (cured state) in 2 hours.
After that, when the sprayed asbestos layer was peeled off from the base concrete, the coating agent penetrated to the interface of the sprayed asbestos layer with the base concrete, the silicone resin was cured, and when the sprayed asbestos layer was peeled off No asbestos scattering or floating was observed.
Claims (5)
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|---|---|---|---|---|
| JPS57111354A (en) * | 1980-12-29 | 1982-07-10 | Toray Silicone Co Ltd | Organopolysiloxane composition |
| JPH03229788A (en) * | 1990-02-02 | 1991-10-11 | Toho Chem Ind Co Ltd | Chemical composition for use in disassembling and removal of asbestos-containing product |
| JPH0497972A (en) * | 1990-08-09 | 1992-03-30 | Daicel Chem Ind Ltd | Coating composition for preventing scattering of asbestos and production thereof |
| JPH0978029A (en) * | 1995-09-14 | 1997-03-25 | Asahi Glass Co Ltd | Resin composition for coating |
| JP2005218980A (en) * | 2004-02-06 | 2005-08-18 | Car Mate Mfg Co Ltd | Method for applying coating composition, and body with coating composition impregnated thereinto |
| JP2006063299A (en) * | 2004-07-28 | 2006-03-09 | Taisei Corp | Method for carrying out treatment for preventing scattering of asbestos |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57111354A (en) * | 1980-12-29 | 1982-07-10 | Toray Silicone Co Ltd | Organopolysiloxane composition |
| JPH03229788A (en) * | 1990-02-02 | 1991-10-11 | Toho Chem Ind Co Ltd | Chemical composition for use in disassembling and removal of asbestos-containing product |
| JPH0497972A (en) * | 1990-08-09 | 1992-03-30 | Daicel Chem Ind Ltd | Coating composition for preventing scattering of asbestos and production thereof |
| JPH0978029A (en) * | 1995-09-14 | 1997-03-25 | Asahi Glass Co Ltd | Resin composition for coating |
| JP2005218980A (en) * | 2004-02-06 | 2005-08-18 | Car Mate Mfg Co Ltd | Method for applying coating composition, and body with coating composition impregnated thereinto |
| JP2006063299A (en) * | 2004-07-28 | 2006-03-09 | Taisei Corp | Method for carrying out treatment for preventing scattering of asbestos |
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