JP2009096131A - Building material and its dampproof treatment method - Google Patents

Building material and its dampproof treatment method Download PDF

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JP2009096131A
JP2009096131A JP2007271849A JP2007271849A JP2009096131A JP 2009096131 A JP2009096131 A JP 2009096131A JP 2007271849 A JP2007271849 A JP 2007271849A JP 2007271849 A JP2007271849 A JP 2007271849A JP 2009096131 A JP2009096131 A JP 2009096131A
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moisture
building material
resin composition
proof
wax
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Takako Watanabe
尊子 渡辺
Atsushi Hamai
篤志 濱井
Shigetoshi Sakai
茂俊 坂井
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OSHIKA KK
Oshika KK
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OSHIKA KK
Oshika KK
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a building material having an excellent dampproof property and adhesive performance with other materials, not causing environmental pollution, and is easy in handling, and to provide a method for its dampproof treatment. <P>SOLUTION: The building material is an inorganic or woody building material obtained by coating at least one surface thereof with a resin composition for dampproof treatment comprising an acrylic resin-based emulsion or styrene-acrylic resin-based emulsion obtained by emulsion polymerization of a first monomer component comprising a (meth)acrylate or a second monomer component comprising styrene or its derivative and a (meth)acrylate in an aqueous dispersion comprising wax and an emulsifying dispersant, and can be bonded with other materials by using an adhesive. The method for dampproof treatment comprises coating at least one surface of the inorganic or woody building material with the resin composition for dampproof treatment. The coating amount is preferably 15-35 g/m<SP>2</SP>as solid content in the resin composition for dampproof treatment. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、床下地、壁下地等に用いられる無機質建材または、内外装材、フローリング材等に用いられる木質建材等の建築材料及び該建築材料の防湿処理方法に関する。   The present invention relates to a building material such as an inorganic building material used for a floor foundation, a wall foundation or the like, or a wooden building material used for an interior / exterior material, a flooring material or the like, and a moisture-proof treatment method for the building material.

木質材料は、軽量で容易に加工でき、比較的強度が大きい上に、表面に美観性等を備えているので、建築材料として各種用途に用いられている。一方、前記木質材料は、比較的短期間に含有水分量が変化しやすい性質を備えており、保管中、運搬中あるいは建築中等に大きな環境の変化に曝されると、膨張、収縮等の寸法の変化を起こしやすい。この結果、前記木質材料は、製品に反り、狂い、割れ等が発生し易いという問題がある。前記問題を解決するために、従来、前記木質材料に防湿処理を施すことが行われている。   Woody materials are lightweight and can be easily processed, have relatively high strength, and have aesthetics and the like on the surface, so they are used as building materials in various applications. On the other hand, the wood material has the property that the moisture content is likely to change in a relatively short period of time, and when exposed to a large environmental change during storage, transportation or construction, dimensions such as expansion, contraction, etc. It is easy to cause change. As a result, the wood material has a problem that it is likely to warp, bend, crack and the like. In order to solve the above problem, conventionally, the wood material has been subjected to moisture-proof treatment.

前記防湿処理の1つとして、前記木質材料に塩化ビニリデン系樹脂を含む塗料を塗布する方法が提案されている(例えば、特許文献1、特許文献2参照)。前記塩化ビニリデン系樹脂を含む塗料によれば、前記木質材料に優れた防湿性を付与することができる。しかし、前記塩化ビニリデン樹脂を含む塗料により十分な防湿性を得るためには、前記木質材料に該塗料を塗布した後、加熱乾燥させる必要がある。また、前記塩化ビニリデンは塩素を含有するため、前記塗料を塗布した木質材料は焼却処理時にダイオキシン等の有害物質を発生し、環境汚染の原因となるおそれがある。   As one of the moisture-proof treatments, a method of applying a paint containing a vinylidene chloride resin to the wooden material has been proposed (see, for example, Patent Document 1 and Patent Document 2). According to the paint containing the vinylidene chloride resin, it is possible to impart excellent moisture resistance to the wood material. However, in order to obtain sufficient moisture resistance with the paint containing the vinylidene chloride resin, it is necessary to apply the paint to the wooden material and then dry it by heating. In addition, since the vinylidene chloride contains chlorine, the wood material coated with the paint may generate harmful substances such as dioxin during incineration and may cause environmental pollution.

環境汚染を引き起こさない前記防湿処理として、前記木質材料にパラフィンワックスのエマルジョンを塗布する方法が知られている。前記パラフィンワックスのエマルジョンによっても前記木質材料に優れた防湿性を付与することができる。しかし、前記パラフィンワックスのエマルジョンを塗布した前記木質材料では、防湿性を発現させるために、該パラフィンワックスの融点以上の温度で乾燥しなければならず、乾燥設備を必要とする。また、前記パラフィンワックスのエマルジョンを塗布した前記木質材料は、表面にパラフィンワックス層が形成されるために、表面が滑りやすく相互に堆積したときに滑落するおそれがある。さらに、表面にパラフィンワックス層が形成されるために、接着性が著しく低下し、接着剤を介して他の材料と接着する等の二次加工が難しくなるという不都合がある。   As the moisture-proof treatment that does not cause environmental pollution, a method of applying an emulsion of paraffin wax to the wooden material is known. The paraffin wax emulsion can impart excellent moisture resistance to the woody material. However, the woody material coated with the emulsion of paraffin wax must be dried at a temperature equal to or higher than the melting point of the paraffin wax in order to exhibit moisture resistance, and requires a drying facility. In addition, since the paraffin wax layer is formed on the surface of the wood material coated with the paraffin wax emulsion, the surfaces of the wood material are slippery and may slide down when they are deposited on each other. Furthermore, since the paraffin wax layer is formed on the surface, the adhesiveness is remarkably lowered, and there is a disadvantage that secondary processing such as bonding with other materials via an adhesive becomes difficult.

また、環境汚染を引き起こさない前記防湿処理として、前記木質材料にスチレンブタジエンゴム(SBR)ラテックスを塗布する方法も知られている。前記SBRラテックスを塗布する方法によれば、該SBRラテックスが前記木質材料の表面に乾燥被膜を形成することにより、該木質材料に含有される水分等の成分が大気中に揮散することを防止して、該木質材料の割れを防止することができる。しかしながら、前記乾燥被膜は、それ自体の吸湿により粘性が高くなるので、該乾燥被膜を形成した木質材料同士を堆積すると、該木質材料が相互に粘着(ブロッキング)しやすくなるという不都合がある。
特開平11−269425号公報 特開平11−348180号公報 特開2000−248140号公報 特開2000−119528号公報
As the moisture-proof treatment that does not cause environmental pollution, a method of applying styrene butadiene rubber (SBR) latex to the wood material is also known. According to the method of applying the SBR latex, the SBR latex forms a dry film on the surface of the wooden material, thereby preventing the components such as moisture contained in the wooden material from being volatilized in the atmosphere. Thus, cracking of the wooden material can be prevented. However, since the dry film has a high viscosity due to its own moisture absorption, there is a disadvantage that when the wood materials forming the dry film are deposited, the wood materials are likely to stick to each other (blocking).
JP-A-11-269425 JP 11-348180 A JP 2000-248140 A JP 2000-119528 A

本発明は、かかる不都合を解消して、環境汚染を引き起こすことなく、優れた防湿性を備えると共に、他の材料に対して優れた接着性能を備え、しかも取り扱いが容易な建築材料を提供することを目的とする。   The present invention eliminates such inconveniences and provides a building material that has excellent moisture resistance without causing environmental pollution, has excellent adhesion performance to other materials, and is easy to handle. With the goal.

また、本発明の目的は、前記建築材料を得る防湿処理方法を提供することにもある。   Another object of the present invention is to provide a moisture-proof treatment method for obtaining the building material.

かかる目的を達成するために、本発明の建築材料は、無機質建材または木質建材であって、ワックスと乳化分散剤とを含む水分散液中で、アクリル酸エステルもしくはメタクリル酸エステルを含む第1のモノマー成分を乳化重合して得られるアクリル樹脂系エマルジョン、または、ワックスと乳化分散剤とを含む水分散液中で、スチレンもしくはその誘導体と、アクリル酸エステルもしくはメタクリル酸エステルとを含む第2のモノマー成分を乳化重合して得られるスチレン−アクリル樹脂系エマルジョンからなる防湿処理用樹脂組成物を、少なくとも1つの面に塗工してなり、接着剤により他の材料と接着可能であることを特徴とする。   In order to achieve such an object, the building material of the present invention is an inorganic building material or a wooden building material, and contains a first acrylate or methacrylate ester in an aqueous dispersion containing a wax and an emulsifying dispersant. A second monomer containing styrene or a derivative thereof and an acrylic ester or methacrylic ester in an acrylic resin emulsion obtained by emulsion polymerization of a monomer component or an aqueous dispersion containing a wax and an emulsifying dispersant A moisture-proof resin composition comprising a styrene-acrylic resin emulsion obtained by emulsion polymerization of components is applied to at least one surface, and can be bonded to other materials with an adhesive. To do.

本発明の建築材料に用いる前記防湿処理用樹脂組成物は、前記第1のモノマー成分または前記第2のモノマー成分を前記ワックスと乳化分散剤とを含む水分散液中で乳化重合することにより得られる。前記防湿処理用樹脂組成物は、前記第1のモノマー成分用いた場合には前記アクリル樹脂系エマルジョンとなり、前記第2のモノマー成分用いた場合には前記スチレン−アクリル樹脂系エマルジョンとなる。前記エマルジョンは、いずれも前記ワックスの粒子が均一に微分散されている。   The moisture-proof treatment resin composition used in the building material of the present invention is obtained by emulsion polymerization of the first monomer component or the second monomer component in an aqueous dispersion containing the wax and an emulsifying dispersant. It is done. The moisture-proof resin composition becomes the acrylic resin emulsion when the first monomer component is used, and becomes the styrene-acrylic resin emulsion when the second monomer component is used. In each of the emulsions, the wax particles are uniformly finely dispersed.

本発明の建築材料は、前記アクリル樹脂系エマルジョンまたはスチレン−アクリル樹脂系エマルジョンからなる防湿処理用樹脂組成物が塗工されることにより、その表面に前記いずれかのエマルジョンの乾燥被膜が形成されている。前記エマルジョンの乾燥被膜は、いずれも樹脂のマトリックス中に前記ワックスの粒子が均一に微分散されており、該ワックスの粒子により、優れた防湿性を得ることができる。この結果、大気中の水分が前記建築材料に吸収されることを防止することができると共に、前記建築材料に含まれる水分、揮発性有機化合物(VOC)等の成分が大気中に揮散することを防止することができる。   The building material of the present invention is coated with the moisture-proof resin composition comprising the acrylic resin emulsion or styrene-acrylic resin emulsion, so that a dry film of any of the emulsions is formed on the surface thereof. Yes. In any of the dry coatings of the emulsion, the wax particles are uniformly finely dispersed in a resin matrix, and excellent moisture resistance can be obtained by the wax particles. As a result, moisture in the atmosphere can be prevented from being absorbed by the building material, and components such as moisture and volatile organic compounds (VOC) contained in the building material can be volatilized in the atmosphere. Can be prevented.

この結果、本発明の建築材料が無機質建材である場合には、大気中の水分が該無機質建材に吸収されることによる割れ、亀裂の発生を防止することができ、該無機質建材に含有されるVOC等の成分が大気中に揮散されることによる環境汚染を防止することができる。また、本発明の建築材料が木質建材である場合には、該木質建材が大気中の水分を吸収して膨張することによる変形、寸法の狂いを防止することができ、該木質建材に含有される水分が大気中に揮散されることによる反り、割れ等の発生を防止することができる。さらに、本発明の建築材料が木質建材である場合には、該木質建材に含有されるVOC等の成分が大気中に揮散されることによる環境汚染を防止することができる。   As a result, when the building material of the present invention is an inorganic building material, it is possible to prevent the occurrence of cracks and cracks due to the absorption of moisture in the atmosphere by the inorganic building material, and it is contained in the inorganic building material. Environmental pollution due to volatilization of components such as VOC into the atmosphere can be prevented. Further, when the building material of the present invention is a wooden building material, the wooden building material can prevent deformation and dimensional deviation due to expansion by absorbing moisture in the atmosphere, and is contained in the wooden building material. Generation of warping, cracking, and the like due to volatilization of moisture in the atmosphere can be prevented. Furthermore, when the building material of the present invention is a wooden building material, it is possible to prevent environmental pollution caused by components such as VOC contained in the wooden building material being volatilized in the atmosphere.

また、前記エマルジョンの乾燥被膜は、いずれも樹脂のマトリックス中に前記ワックスの粒子が取り込まれているので、該ワックスが他の材料に転移することがない。従って、前記防湿処理用樹脂組成物が塗工されている本発明の建築材料によれば、他の材料に対する接着性が阻害されることが無く、他の材料に対して優れた接着性能を得ることができる。   In addition, since the wax particles are incorporated in the resin matrix, the dry film of the emulsion does not transfer the wax to other materials. Therefore, according to the building material of the present invention to which the resin composition for moisture proofing treatment is applied, adhesion to other materials is not hindered and excellent adhesion performance to other materials is obtained. be able to.

また、前記エマルジョンの乾燥被膜は、いずれも前記ワックスの粒子が樹脂のマトリックス中に取り込まれており、該乾燥被膜の表面に出ることがない。従って、前記防湿処理用樹脂組成物が塗工されている本発明の建築材料は、相互に堆積しても滑落したり、粘着したりすることがなく、容易に取り扱うことができる。   In any of the dry films of the emulsion, the wax particles are incorporated in the resin matrix and do not come out on the surface of the dry film. Therefore, the building material of the present invention coated with the moisture proofing resin composition can be easily handled without slipping or sticking even when deposited on each other.

また、前記防湿処理用樹脂組成物は塩素を含まないので、本発明の建築材料は焼却処理されてもダイオキシン等の有害物質を発生することが無く、環境汚染の原因となることがない。さらに、前記防湿処理用樹脂組成物によれば、塗工面に優れた対汚染性を付与することができ、本発明の建築材料は、該塗工面における表面汚染を低減することができる。   Moreover, since the moisture-proofing resin composition does not contain chlorine, the building material of the present invention does not generate harmful substances such as dioxins even when incinerated, and does not cause environmental pollution. Furthermore, according to the resin composition for moisture-proof treatment, excellent antifouling property can be imparted to the coated surface, and the building material of the present invention can reduce surface contamination on the coated surface.

本発明の建築材料の防湿処理方法は、前記いずれかの防湿処理用樹脂組成物を、無機質建材または木質建材の少なくとも1つの面に塗工することにより実施することができる。   The moisture-proofing method for building materials according to the present invention can be carried out by applying any one of the above moisture-proofing resin compositions to at least one surface of an inorganic building material or a wooden building material.

本発明の建築材料の防湿処理方法においては、前記防湿処理用樹脂組成物を、前記無機質建材または前記木質建材の少なくとも1つの面に、該防湿処理用樹脂組成物中の固形分として15〜35g/mの範囲の量で塗工することが好ましい。前記防湿処理用樹脂組成物の塗工量が、該防湿処理用樹脂組成物中の固形分として15g/m未満の量であるときには、前記建築材料に十分な防湿性を付与することができないことがある。一方、前記防湿処理用樹脂組成物の塗工量が、該防湿処理用樹脂組成物中の固形分として35g/mを超える量であるときには、前記建築材料に他の材料に対する十分な接着性能を付与することができないことがある。 In the moisture-proofing method for building materials of the present invention, the moisture-proofing resin composition is applied to at least one surface of the inorganic building material or the wooden building material as a solid content in the moisture-proofing resin composition of 15 to 35 g. It is preferable to apply in an amount in the range of / m 2 . When the coating amount of the moisture-proofing resin composition is less than 15 g / m 2 as a solid content in the moisture-proofing resin composition, sufficient moisture resistance cannot be imparted to the building material. Sometimes. On the other hand, when the coating amount of the moisture-proofing resin composition is an amount exceeding 35 g / m 2 as the solid content in the moisture-proofing resin composition, the building material has sufficient adhesion performance to other materials. May not be granted.

次に、本発明の実施の形態についてさらに詳しく説明する。   Next, embodiments of the present invention will be described in more detail.

本実施形態の建築材料は、床下地、壁下地等に用いられる無機質建材または、内外装材、フローリング材等に用いられる木質建材であり、防湿処理用樹脂組成物を、少なくとも1つの面に塗工したものである。   The building material of the present embodiment is an inorganic building material used for a floor foundation, a wall foundation or the like, or a wooden building material used for an interior / exterior material, a flooring material, etc., and a moisture-proof resin composition is applied to at least one surface. It has been crafted.

前記無機質建材としては、スレート板、石膏ボード、石綿ボード等を挙げることができる。また、前記木質建材としては、中密度繊維板(MDF)、パーティクルボード、合板等を挙げることができる。   Examples of the inorganic building material include slate board, gypsum board, asbestos board and the like. Examples of the wooden building material include medium density fiberboard (MDF), particle board, and plywood.

前記防湿処理用樹脂組成物としては、ワックスと乳化分散剤とを含む水分散液中で、アクリル酸エステルまたはメタクリル酸エステルを含む第1のモノマー成分を乳化重合して得られるアクリル樹脂系エマルジョンを挙げることができる。また、前記防湿処理用樹脂組成物は、ワックスと乳化分散剤とを含む水分散液中で、スチレンまたはその誘導体と、アクリル酸エステルまたはメタクリル酸エステルとを含む第2のモノマー成分を乳化重合して得られるスチレン−アクリル樹脂系エマルジョンであってもよい。   The moisture-proof resin composition includes an acrylic resin emulsion obtained by emulsion polymerization of a first monomer component containing an acrylic ester or a methacrylic ester in an aqueous dispersion containing a wax and an emulsifying dispersant. Can be mentioned. The moisture-proof treatment resin composition emulsion-polymerizes a second monomer component containing styrene or a derivative thereof and an acrylic ester or methacrylic ester in an aqueous dispersion containing a wax and an emulsifying dispersant. It may be a styrene-acrylic resin emulsion obtained.

前記エマルジョンは、いずれもいずれも前記ワックスの粒子が均一に微分散されている。この結果、前記エマルジョンを乾燥させて得られる乾燥被膜では、いずれも前記ワックスの粒子が樹脂のマトリックス中に微分散されて取り込まれた構成となっており、該ワックスの粒子が該乾燥被膜の表面に出ることがない。   In any of the emulsions, the wax particles are uniformly finely dispersed. As a result, all of the dry films obtained by drying the emulsion have a structure in which the wax particles are finely dispersed in the resin matrix, and the wax particles are on the surface of the dry film. Never go out.

前記防湿処理用樹脂組成物となるアクリル樹脂系エマルジョンまたはスチレン−アクリル樹脂系エマルジョンは、それ自体公知であり、通常は防湿紙の製造に用いられる(特許文献3、特許文献4参照)。前記防湿処理用樹脂組成物は、必要に応じて、ポリオレフィン樹脂、ポリビニルアルコール、カゼイン等の水溶性樹脂、増粘剤、増強剤、保水剤、消泡剤、スライムコントロール剤等が添加されてもよい。   The acrylic resin-based emulsion or styrene-acrylic resin-based emulsion used as the moisture-proofing resin composition is known per se and is usually used for the manufacture of moisture-proof paper (see Patent Document 3 and Patent Document 4). The moisture-proof treatment resin composition may be added with a water-soluble resin such as a polyolefin resin, polyvinyl alcohol, or casein, a thickener, a reinforcing agent, a water retention agent, an antifoaming agent, a slime control agent, or the like, if necessary. Good.

本実施形態の建築材料では、前記無機質建材または木質建材の防湿処理を必要とする少なくとも1つの面に、前記防湿処理用樹脂組成物を塗工する。前記防湿処理を必要とする面としては、例えば、床下地、壁下地では大気に接する面であり、内外装材では表となる面であり、フローリング材では表裏両面である。また、木質建材の場合、種類によっては、表裏両面に加えて、側面、木口面等に塗工しても差し支えない。   In the building material of this embodiment, the moisture-proof treatment resin composition is applied to at least one surface of the inorganic building material or wooden building material that requires moisture-proof treatment. The surface requiring moisture-proofing is, for example, a surface that is in contact with the air on a floor base or a wall base, is a front surface in an interior / exterior material, and is a front / back surface in a flooring material. In the case of wooden building materials, depending on the type, in addition to the front and back surfaces, it may be applied to the side surface, the end surface, etc.

前記防湿処理用樹脂組成物の塗工は、ディッピング等により含浸させてもよく、ロールコーター、バーコーター、エアナイフコーター、ブレードコーター、ゲートローズコーター、サイズプレス等の各種塗工設備または刷毛等により塗工してもよい。   The moisture-proof treatment resin composition may be applied by dipping or the like, and may be applied by various coating equipment such as a roll coater, bar coater, air knife coater, blade coater, gate rose coater, size press or brush. You may work.

前記防湿処理用樹脂組成物の塗工量は、優れた防湿効果が得られると共に、他の材料に対して優れた接着性能が得られることから、該防湿処理用樹脂組成物中の固形分として、15〜35g/mの範囲の量とすることが好ましい。但し、他の材料に対する接着を顧慮する必要の無い場合は、前記範囲を超える量であってもよく、例えば、木口面等のように表面が荒い部分に塗工する場合には、前記防湿処理用樹脂組成物中の固形分として80〜300g/mの範囲の量であってもよい。 As the coating amount of the moisture-proof treatment resin composition, an excellent moisture-proof effect is obtained and an excellent adhesion performance to other materials is obtained, so that the solid content in the moisture-proof treatment resin composition is as follows. The amount is preferably in the range of 15 to 35 g / m 2 . However, when it is not necessary to consider the adhesion to other materials, the amount may exceed the above range. For example, when the coating is applied to a rough surface such as a mouth end surface, the moisture-proof treatment The amount in the range of 80 to 300 g / m 2 may be used as the solid content in the resin composition.

前記防湿処理用樹脂組成物は、前記塗工後、乾燥されることにより、塗工された面に防湿性を付与することができる。前記防湿処理用樹脂組成物の乾燥は、例えば、0〜150℃の温度で行うことができる。   The moisture-proof treatment resin composition can impart moisture resistance to the coated surface by drying after the coating. The moisture-proof treatment resin composition can be dried, for example, at a temperature of 0 to 150 ° C.

次に、実施例及び比較例を示す。   Next, examples and comparative examples are shown.

本実施例では、ワックスと乳化分散剤とを含む水分散液中で、スチレンまたはその誘導体と、アクリル酸エステルまたはメタクリル酸エステルとを含むモノマー成分を乳化重合して得られるスチレン−アクリル樹脂系エマルジョン(星光PMC株式会社製紙用塗工剤、商品名:T−XP118)を、固形分が37重量%となるように水で稀釈して、防湿処理用樹脂組成物を調製した。   In this example, a styrene-acrylic resin emulsion obtained by emulsion polymerization of a monomer component containing styrene or a derivative thereof and an acrylic ester or methacrylic ester in an aqueous dispersion containing a wax and an emulsifying dispersant. (Coating agent for paper manufactured by Seiko PMC Co., Ltd., trade name: T-XP118) was diluted with water so that the solid content was 37% by weight to prepare a resin composition for moisture-proof treatment.

次に、本実施例で得られた防湿処理用樹脂組成物を、3mm×70mm×70mmの中密度繊維板(MDF)の一方の表面に、それぞれの塗工量が該防湿処理用樹脂組成物中の固形分として9.25g/m、18.5g/m、29.6g/m、37g/m、となるように刷毛で塗工し、20℃で1日以上乾燥させて、4種類の透湿度測定用の試料を調製した。 Next, the moisture-proof treatment resin composition obtained in this example was applied to one surface of a 3 mm × 70 mm × 70 mm medium-density fiber board (MDF) with each coating amount being the moisture-proof treatment resin composition. 9.25 g / m 2 as a solid content in, 18.5g / m 2, was coated with a brush so as to 29.6g / m 2, 37g / m 2,, dried over one day at 20 ° C. Four types of samples for measuring moisture permeability were prepared.

次に、前記透湿度測定用の試料を用い、JIS Z 0208、B法(カップ法)に準じて、防湿層側(本実施例で得られた防湿処理用樹脂組成物を塗工した面の側)を外側として、前記各試料の透湿度を測定した。結果を表1に示す。   Next, using the sample for measuring moisture permeability, according to JIS Z 0208, method B (cup method), the moisture-proof layer side (the surface coated with the moisture-proof treatment resin composition obtained in this example) The moisture permeability of each sample was measured with the side) as the outside. The results are shown in Table 1.

次に、本実施例で得られた防湿処理用樹脂組成物を、15mm×50mm×300mmの針葉樹合板の一方の表面に、それぞれの塗工量が該防湿処理用樹脂組成物中の固形分として23.1g/m、33.5g/m、36.4g/m、57.3g/mとなるように刷毛で塗工し、20℃で1日以上乾燥させて、4種類の接着性能測定用の試料を調製した。 Next, the moisture-proof resin composition obtained in this example was applied to one surface of a 15 mm × 50 mm × 300 mm softwood plywood with each coating amount as a solid content in the moisture-proof resin composition. 23.1g / m 2, 33.5g / m 2, 36.4g / m 2, was coated with a brush so that 57.3 g / m 2, dried for more than one day at 20 ° C., 4 kinds of A sample for measuring adhesion performance was prepared.

次に、前記各接着性能測定用の試料を、1種類について2枚ずつ、その前記防湿層側に、それぞれウレタン樹脂系接着剤(株式会社オーシカ製、商品名:セレクティUR−70)を塗布して貼り合わせ、室温にて1週間養生した。養生後、JIS A 5550の圧縮せん断試験に準じて圧縮せん断力及び材料破断率を測定し、接着性能の指標とした。結果を表1に示す。
〔比較例1〕
本比較例では、パラフィンワックスとアクリル樹脂とを含むエマルジョン(株式会社オーシカ製木質材料用撥水剤、商品名:ディアコート200)を、固形分が37重量%となるように水で稀釈して、防湿処理用樹脂組成物を調製した。本比較例で得られた防湿処理用樹脂組成物は、前記パラフィンワックスとアクリル樹脂とが単に混合されているだけである。
Next, two samples of each adhesive performance measurement are applied to each of the moisture-proof layer side, and a urethane resin adhesive (product name: Selecty UR-70, manufactured by Oshika Co., Ltd.) is applied to the moisture-proof layer side. And then cured at room temperature for 1 week. After curing, the compressive shear force and the material breaking rate were measured according to the compressive shear test of JIS A 5550, and used as an index of adhesion performance. The results are shown in Table 1.
[Comparative Example 1]
In this comparative example, an emulsion containing a paraffin wax and an acrylic resin (water repellent for wood material manufactured by Oshika Co., Ltd., trade name: Deercoat 200) was diluted with water so that the solid content was 37% by weight. A resin composition for moisture-proof treatment was prepared. In the moisture-proof resin composition obtained in this comparative example, the paraffin wax and the acrylic resin are simply mixed.

次に、本比較例で得られた防湿処理用樹脂組成物を、実施例1と同一のMDFの一方の表面に塗工量が該防湿処理用樹脂組成物中の固形分として37g/mとなるように刷毛で塗工し、20℃で1日以上乾燥させて、透湿度測定用の試料を調製した。次に、前記透湿度測定用の試料を用いた以外は、実施例1と全く同一にして、該試料の透湿度を測定した。結果を表1に示す。 Next, the moisture-proof treatment resin composition obtained in this Comparative Example was applied to one surface of the same MDF as in Example 1 so that the coating amount was 37 g / m 2 as a solid content in the moisture-proof treatment resin composition. A sample for measuring moisture permeability was prepared by coating with a brush and drying at 20 ° C. for 1 day or longer. Next, the moisture permeability of the sample was measured in the same manner as in Example 1 except that the moisture permeability measurement sample was used. The results are shown in Table 1.

Figure 2009096131
Figure 2009096131

表1から、ワックスが微分散されている防湿処理用樹脂組成物を用いて処理された実施例1のMDFによれば、パラフィンワックスとアクリル樹脂とが単に混合されているだけの防湿処理用樹脂組成物を用いて処理された比較例1のMDFに比較して、透湿度が低く、格段に優れた防湿性を備えていることが明らかである。   From Table 1, according to the MDF of Example 1 treated with the moisture-proof treatment resin composition in which the wax is finely dispersed, the moisture-proof treatment resin in which the paraffin wax and the acrylic resin are simply mixed. Compared to the MDF of Comparative Example 1 treated with the composition, it is clear that the moisture permeability is low and the moisture resistance is remarkably excellent.

また、実施例1の針葉樹合板によれば、他の材料(ここではもう一方の針葉樹合板)に対する接着性能が格段に優れていることが明らかである。   Moreover, according to the softwood plywood of Example 1, it is clear that the adhesive performance with respect to another material (here another softwood plywood) is remarkably excellent.

さらに、実施例1の防湿処理用樹脂組成物は、塗工量が15g/m以上の範囲の量であることにより、前記MDFにさらに優れた防湿性を付与することができ、35g/m以下の範囲の量であることにより、前記針葉樹合板の他の材料に対する接着性能をさらに優れたものとすることができることが明らかである。 Furthermore, the resin composition for moisture-proof treatment of Example 1 can impart further excellent moisture-proofing properties to the MDF when the coating amount is in the range of 15 g / m 2 or more, and 35 g / m. It is apparent that the adhesion performance of the softwood plywood to other materials can be further improved by the amount in the range of 2 or less.

本実施例では、実施例1と同一のスチレン−アクリル樹脂系エマルジョンを固形分が37重量%となるように水で稀釈して、防湿処理用樹脂組成物を調製した。   In this example, a moisture-proof resin composition was prepared by diluting the same styrene-acrylic resin emulsion as in Example 1 with water to a solid content of 37% by weight.

次に、本実施例で得られた防湿処理用樹脂組成物を、20mm×150mm×300mmのパーティクルボード(PB)の表裏両面及び四方の木口面に刷毛で塗工し、20℃で1日以上乾燥させて、試料を調製した。前記防湿処理用樹脂組成物は、前記PBの表裏両面には該防湿処理用樹脂組成物中の固形分として22.2g/mとなるように塗工し、前記PBの各木口面には該防湿処理用樹脂組成物中の固形分として61.9g/mとなるように塗工した。 Next, the moisture-proof resin composition obtained in this example was applied to the front and back surfaces of the 20 mm × 150 mm × 300 mm particle board (PB) and the four sides of the mouth with a brush, and at 20 ° C. for one day or more. Samples were prepared by drying. The moisture-proof treatment resin composition is coated on the front and back surfaces of the PB so that the solid content in the moisture-proof treatment resin composition is 22.2 g / m 2. It applied so that it might become 61.9 g / m < 2 > as solid content in this resin composition for moisture-proof processing.

次に、前記試料の重量及び寸法を測定した後、40℃・90%RH環境下にて7日間放置した。7日後に前記試料を取り出し、20℃環境下にて室温に戻し、該試料の重量及び寸法を測定した。前後の重量の変化から吸湿量(g/m)を算出すると共に、前後の寸法の変化から寸法変化率を算出した。結果を表2に示す。
〔比較例2〕
本比較例では、比較例1と同一のパラフィンワックスとアクリル樹脂とを含むエマルジョンを、固形分が37重量%となるように水で稀釈して、防湿処理用樹脂組成物を調製した。
Next, after measuring the weight and dimensions of the sample, the sample was left in a 40 ° C./90% RH environment for 7 days. Seven days later, the sample was taken out, returned to room temperature in a 20 ° C. environment, and the weight and dimensions of the sample were measured. The moisture absorption (g / m 2 ) was calculated from the change in weight before and after, and the dimensional change rate was calculated from the change in dimensions before and after. The results are shown in Table 2.
[Comparative Example 2]
In this comparative example, an emulsion containing the same paraffin wax and acrylic resin as in comparative example 1 was diluted with water so that the solid content was 37% by weight to prepare a moisture-proof treatment resin composition.

次に、本比較例で得られた防湿処理用樹脂組成物を用いた以外は、実施例2と全く同一にして試料を調製し、該試料の吸湿量(g/m)及び寸法変化率を算出した。結果を表2に示す。 Next, a sample was prepared exactly as in Example 2, except that the moisture-proof resin composition obtained in this comparative example was used, and the moisture absorption amount (g / m 2 ) and dimensional change rate of the sample. Was calculated. The results are shown in Table 2.

Figure 2009096131
Figure 2009096131

表2からワックスが微分散されている防湿処理用樹脂組成物を用いて処理された実施例2のPBによれば、パラフィンワックスとアクリル樹脂とが単に混合されているだけの防湿処理用樹脂組成物を用いて処理された比較例2のPBに比較して、吸湿量、寸法変化率共に低く、格段に優れた防湿性を備えていることが明らかである。   According to the PB of Example 2 treated with the moisture-proof treatment resin composition in which the wax is finely dispersed from Table 2, the moisture-proof treatment resin composition in which the paraffin wax and the acrylic resin are simply mixed. It is clear that both the amount of moisture absorption and the rate of dimensional change are low compared to the PB of Comparative Example 2 treated with the product, and the moisture resistance is remarkably excellent.

本実施例では、実施例1と同一のスチレン−アクリル樹脂系エマルジョンを、固形分が37重量%となるように水で稀釈して、防湿処理用樹脂組成物を調製した。   In this example, the same styrene-acrylic resin emulsion as in Example 1 was diluted with water so that the solid content was 37% by weight to prepare a moisture-proof treatment resin composition.

次に、本実施例で得られた防湿処理用樹脂組成物を、2.8mm×53.6mm×140mmのラワン合板の表裏両面及び四方の木口面に刷毛で塗工し、20〜25℃で1日以上乾燥させて、試料を調製した。前記防湿処理用樹脂組成物は、前記ラワン合板の表裏両面には該防湿処理用樹脂組成物中の固形分として34.3g/mとなるように塗工し、前記ラワン合板の各木口面には該防湿処理用樹脂組成物中の固形分として73.7g/mとなるように塗工した。 Next, the resin composition for moisture-proof treatment obtained in this example was applied to both the front and back surfaces of the 2.8 mm × 53.6 mm × 140 mm lauan plywood and the front end of each side with a brush, and the temperature was from 20 to 25 ° C. Samples were prepared by drying for 1 day or more. The moisture-proof treatment resin composition was applied to both front and back surfaces of the lauan plywood so that the solid content in the moisture-proof treatment resin composition was 34.3 g / m 2 , Was applied so that the solid content in the moisture-proofing resin composition was 73.7 g / m 2 .

次に、前記試料を用い、合板のJASの放散ホルムアルデヒド量測定方法(デシケーター法)に従って、該試料のホルムアルデヒド放散量を測定した。結果を表3に示す。
〔比較例3〕
本比較例では、比較例1と同一のパラフィンワックスとアクリル樹脂とを含むエマルジョンを、固形分が37重量%となるように水で稀釈して、防湿処理用樹脂組成物を調製した。
Next, using the sample, the amount of formaldehyde emitted from the sample was measured according to the method for measuring the amount of formaldehyde released by JAS (desiccator method). The results are shown in Table 3.
[Comparative Example 3]
In this comparative example, an emulsion containing the same paraffin wax and acrylic resin as in comparative example 1 was diluted with water so that the solid content was 37% by weight to prepare a moisture-proof treatment resin composition.

次に、本比較例で得られた防湿処理用樹脂組成物を用いた以外は、実施例3と全く同一にして試料を調製し、該試料のホルムアルデヒド放散量を測定した。前記防湿処理用樹脂組成物は、前記ラワン合板の表裏両面には該防湿処理用樹脂組成物中の固形分として33.0g/mとなるように塗工し、前記ラワン合板の各木口面には該防湿処理用樹脂組成物中の固形分として64.5g/mとなるように塗工した。結果を表3に示す。 Next, a sample was prepared exactly as in Example 3 except that the moisture-proof treatment resin composition obtained in this comparative example was used, and the amount of formaldehyde emitted from the sample was measured. The moisture-proof treatment resin composition is applied to both the front and back surfaces of the Lauan plywood so that the solid content in the moisture-proof treatment resin composition is 33.0 g / m 2. The coating was carried out so that the solid content in the moisture-proofing resin composition was 64.5 g / m 2 . The results are shown in Table 3.

Figure 2009096131
Figure 2009096131

表3から、ワックスが微分散されている防湿処理用樹脂組成物を用いて処理された実施例3のラワン合板によれば、パラフィンワックスとアクリル樹脂とが単に混合されているだけの防湿処理用樹脂組成物を用いて処理された比較例3のラワン合板に比較して、ホルムアルデヒド放散量が低く、格段に優れた防湿性を備えていることが明らかである。   From Table 3, according to the lauan plywood of Example 3 treated with the moisture-proof resin composition in which the wax is finely dispersed, the moisture-proof treatment is simply a mixture of paraffin wax and acrylic resin. It is clear that the amount of formaldehyde emitted is low and the moisture resistance is remarkably excellent as compared with the Lauan plywood of Comparative Example 3 treated with the resin composition.

本実施例では、実施例2で得られた試料に、赤色の水溶性インクを数滴滴下し、15分間放置後、ウエスで軽く拭き取って表面を目視で観察し、該試料の防汚性を評価した。結果を表4に示す。
〔比較例4〕
本比較例では、比較例2で得られた試料を用いた以外は実施例4と全く同一にして、該試料の防汚性を評価した。結果を表4に示す。
In this example, a few drops of red water-soluble ink were dropped on the sample obtained in Example 2, left for 15 minutes, wiped lightly with a waste cloth, and the surface was visually observed to improve the antifouling property of the sample. evaluated. The results are shown in Table 4.
[Comparative Example 4]
In this comparative example, the antifouling property of the sample was evaluated in the same manner as in Example 4 except that the sample obtained in Comparative Example 2 was used. The results are shown in Table 4.

Figure 2009096131
Figure 2009096131

表4から、ワックスが微分散されている防湿処理用樹脂組成物を用いて処理された実施例4のPBによれば、パラフィンワックスとアクリル樹脂とが単に混合されているだけの防湿処理用樹脂組成物を用いて処理された比較例4のPBに比較して、赤色の水溶性インクの痕跡が薄く、優れた防汚性を備えていることが明らかである。   From Table 4, according to the PB of Example 4 treated with the moisture-proof treatment resin composition in which the wax is finely dispersed, the moisture-proof treatment resin in which the paraffin wax and the acrylic resin are simply mixed. Compared to the PB of Comparative Example 4 treated with the composition, it is clear that the traces of the red water-soluble ink are thin and have excellent antifouling properties.

尚、表4において、「○」は赤色の水溶性インクの痕跡が認められないことを示し、「△」は赤色の水溶性インクの痕跡が薄いことを示す。また、「○△」は、前記「○」と前記「△」との中間の状態を示す。   In Table 4, “◯” indicates that no trace of red water-soluble ink is observed, and “Δ” indicates that the trace of red water-soluble ink is thin. “◯ Δ” indicates an intermediate state between “◯” and “Δ”.

Claims (3)

無機質建材または木質建材からなる建築材料であって、
ワックスと乳化分散剤とを含む水分散液中で、アクリル酸エステルもしくはメタクリル酸エステルを含む第1のモノマー成分を乳化重合して得られるアクリル樹脂系エマルジョン、または、
ワックスと乳化分散剤とを含む水分散液中で、スチレンもしくはその誘導体と、アクリル酸エステルもしくはメタクリル酸エステルとを含む第2のモノマー成分を乳化重合して得られるスチレン−アクリル樹脂系エマルジョンからなる防湿処理用樹脂組成物を、少なくとも1つの面に塗工してなり、
接着剤により他の材料と接着可能であることを特徴とする建築材料。
A building material made of inorganic building materials or wooden building materials,
An acrylic resin emulsion obtained by emulsion polymerization of a first monomer component containing an acrylic ester or a methacrylic ester in an aqueous dispersion containing a wax and an emulsifying dispersant; or
It comprises a styrene-acrylic resin emulsion obtained by emulsion polymerization of a second monomer component containing styrene or a derivative thereof and an acrylic ester or methacrylic ester in an aqueous dispersion containing a wax and an emulsifying dispersant. The moisture-proof treatment resin composition is applied to at least one surface,
A building material that can be bonded to other materials with an adhesive.
ワックスと乳化分散剤とを含む水分散液中で、アクリル酸エステルもしくはメタクリル酸エステルを含む第1のモノマー成分を乳化重合して得られるアクリル樹脂系エマルジョン、または、
ワックスと乳化分散剤とを含む水分散液中で、スチレンもしくはその誘導体と、アクリル酸エステルもしくはメタクリル酸エステルとを含む第2のモノマー成分を乳化重合して得られるスチレン−アクリル樹脂系エマルジョンからなる防湿処理用樹脂組成物を、
無機質建材または木質建材の少なくとも1つの面に塗工することを特徴とする建築材料の防湿処理方法。
An acrylic resin emulsion obtained by emulsion polymerization of a first monomer component containing an acrylic ester or a methacrylic ester in an aqueous dispersion containing a wax and an emulsifying dispersant; or
It comprises a styrene-acrylic resin emulsion obtained by emulsion polymerization of a second monomer component containing styrene or a derivative thereof and an acrylic ester or methacrylic ester in an aqueous dispersion containing a wax and an emulsifying dispersant. Moisture-proof resin composition
A method for moisture-proofing a building material, comprising coating at least one surface of an inorganic building material or a wooden building material.
前記防湿処理用樹脂組成物を、前記無機質建材または前記木質建材の少なくとも1つの面に、該防湿処理用樹脂組成物中の固形分として15〜35g/mの範囲の量で塗工することを特徴とする請求項2記載の建築材料の防湿処理方法。 The moisture-proof treatment resin composition is applied to at least one surface of the inorganic building material or the wooden building material in an amount ranging from 15 to 35 g / m 2 as a solid content in the moisture-proof treatment resin composition. The moisture-proofing method for building materials according to claim 2.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010117021A1 (en) 2009-04-10 2010-10-14 三菱化学株式会社 Field effect transistor, method for manufacturing same, and electronic device using same
JP2013002246A (en) * 2011-06-21 2013-01-07 Panasonic Corp Wooden floor material and method of manufacturing the same
JP2018501991A (en) * 2014-12-23 2018-01-25 ダウ グローバル テクノロジーズ エルエルシー Treated porous material

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JPH11333806A (en) * 1998-05-27 1999-12-07 Matsushita Electric Ind Co Ltd Method for reducing formalin odor of board
JP2000119528A (en) * 1998-10-13 2000-04-25 Seiko Kagaku Kogyo Co Ltd Resin composition for moisture-proofing and moisture- proofed paper using the same
JP2000248140A (en) * 1999-03-03 2000-09-12 Seiko Kagaku Kogyo Co Ltd Resin composition for moisture-proofing and moisture- proof paper made by using it
JP2001247854A (en) * 2000-03-03 2001-09-14 Touritsu Kasei Kogyo Kk Water repellent for building wood member

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JPH11333806A (en) * 1998-05-27 1999-12-07 Matsushita Electric Ind Co Ltd Method for reducing formalin odor of board
JP2000119528A (en) * 1998-10-13 2000-04-25 Seiko Kagaku Kogyo Co Ltd Resin composition for moisture-proofing and moisture- proofed paper using the same
JP2000248140A (en) * 1999-03-03 2000-09-12 Seiko Kagaku Kogyo Co Ltd Resin composition for moisture-proofing and moisture- proof paper made by using it
JP2001247854A (en) * 2000-03-03 2001-09-14 Touritsu Kasei Kogyo Kk Water repellent for building wood member

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010117021A1 (en) 2009-04-10 2010-10-14 三菱化学株式会社 Field effect transistor, method for manufacturing same, and electronic device using same
JP2013002246A (en) * 2011-06-21 2013-01-07 Panasonic Corp Wooden floor material and method of manufacturing the same
JP2018501991A (en) * 2014-12-23 2018-01-25 ダウ グローバル テクノロジーズ エルエルシー Treated porous material

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