JP2007291837A - Aqueous paint material composition, its construction method, and wall structure by the same - Google Patents
Aqueous paint material composition, its construction method, and wall structure by the same Download PDFInfo
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Abstract
Description
本発明は、土壁風の施工方法と壁構造、土壁風の機能・意匠を発現させる組成物とに関するものである。 The present invention relates to a mud wall-like construction method, a wall structure, and a composition that expresses the function and design of the mud wall style.
従来古くは、土壁は竹・木を組み、木舞とし、これに両面から順次土を塗り、仕上げとして漆喰等で仕上げを行っていた。この壁は水分を吸い、燃えにくい壁であった。しかし、工期が長く、原料の入手性、材料の調製等職人の勘と経験によるものが多く、壁のコスト効率が悪く、施工されることが希となった。しかし、土壁の意匠性等の機能要求から石膏ボード等に土壁調の塗材を塗ることがあるが、意匠性、耐久性に満足の行くものでなかった。 In the past, the soil walls were made of bamboo and wood, made into a wooden dance, and soil was applied to both sides in order and finished with plaster as a finish. This wall sucked moisture and was hard to burn. However, the construction period was long, and many things depended on the intuition and experience of craftsmen, such as the availability of raw materials and the preparation of materials. However, there are cases where a clay wall-like coating material is applied to a plaster board or the like due to functional requirements such as the design of the earth wall, but the design and durability are not satisfactory.
また、合成樹脂壁塗材は壁の機能からは割れ、いわゆるクラックなどが発生させないことが、技術的な課題となり、外観上の割れは壁の機能からは忌避されていた。しかし、ひび割れを有する土壁の風情は意匠上選択幅を増やし、人に落ち着き、癒しをもたらすものと考えられる。土壁にひび割れを発生させるためには、粘土、砂の配合で粘性を調整する必要があり、さらに、施工においても高い左官技能が要求され、また、壁の物性にまで、追求するものでなかった。 Further, it has been a technical problem that the synthetic resin wall coating material does not generate cracks due to the function of the walls, that is, so-called cracks, and appearance cracks have been avoided from the function of the walls. However, the texture of the earthen wall with cracks is thought to increase the range of choice in terms of design, calm and heal people. In order to generate cracks in the earth wall, it is necessary to adjust the viscosity by blending clay and sand. In addition, high plastering skills are required in construction, and the physical properties of the wall are not pursued. It was.
合成樹脂エマルジョンと、特定の繊維長の合成繊維、特定粒度の着色骨材および無機質粉体とポリエチレンオキサイドを特定比率で含有する組成物を使用することにより、砂岩調塗膜形成することを提案し、その過程で、凹凸の乾燥等の条件差でクラックの発生することを述べている。（特許文献１）
しかしながら、合成樹脂塗材の耐久性と日本古来の多様な意匠性を奏する方法、組成物、壁構造は現れていなかった。 However, methods, compositions, and wall structures that exhibit the durability of synthetic resin coating materials and various design features from ancient Japan have not appeared.
解決しようとする課題は、多様な土壁の風合い、意匠を有し、調湿性を持ち、また、土壁で発生する自然なひび割れ状態を発現する組成物、及び下地の経時変化による割れの生じない施工方法、壁構造の提供にある。 The problem to be solved is a composition that has various textures and designs of earthen walls, has humidity control, and develops a natural cracking state that occurs on the earthen walls, and cracks due to aging of the foundation There is no construction method, in providing the wall structure.
請求項１の発明は、合成樹脂エマルジョン、粘土、シルト、砂、水からなることを特徴とする水系塗材組成物であり、土壁風の意匠を有し、調湿性を有し、堅牢度に優れる。 The invention of claim 1 is an aqueous coating material composition comprising a synthetic resin emulsion, clay, silt, sand, and water, has an earthy wall design, has humidity control, and fastness Excellent.
請求項２の発明は、塗布乾燥後、ひび割れが生じることを特徴とする請求項１記載の水系塗材組成物であり、乾燥塗膜にひび割れを発生させることができ、表面が傷つき難く、土壁風で意匠性が良い。 The invention according to claim 2 is the water-based coating material composition according to claim 1, characterized in that cracks occur after coating and drying, the dry coating film can be cracked, the surface is hardly damaged, and the soil Wall style and good design.
請求項３の発明は、合成樹脂エマルジョンがアクリル樹脂系エマルジョンであることを特徴とする請求項１乃至２のいずれかに記載の水系塗材組成物てあり、密着性に優れ、塗膜物性が良い。 The invention according to claim 3 is the aqueous coating material composition according to any one of claims 1 to 2, characterized in that the synthetic resin emulsion is an acrylic resin emulsion, and has excellent adhesion and coating film properties. good.
請求項４の発明は、ＪＩＳＡ６９０９に規定される合成樹脂エマルジョン系仕上塗材と土壁用土、砂、水からなることを特徴とする水系塗材組成物であり、土壁様の風合いが簡易に作製でき、土壁意匠を有し、調湿性を有し、堅牢度に優れる。 The invention of claim 4 is a water-based coating material composition comprising a synthetic resin emulsion-based finish coating material defined in JIS A6909 and soil wall soil, sand, and water, and the soil wall-like texture can be easily obtained. It can be produced, has a soil wall design, has humidity control, and is excellent in fastness.
請求項５の発明は、塗布乾燥後、ひび割れが生じることを特徴とする請求項４記載の水系塗材組成物であり、土壁様の風合いが簡易に作製でき、乾燥塗膜にひび割れを発生させることができ、表面が傷つき難く、土壁意匠性が良い。 The invention according to claim 5 is the water-based coating material composition according to claim 4 characterized in that cracks occur after coating and drying, and a soil-like texture can be easily produced, and cracks are generated in the dried coating film. The surface can hardly be damaged, and the earth wall design is good.
請求項６の発明は、ＪＩＳＡ６９０９に規定される合成樹脂エマルジョン系仕上塗材がアクリル樹脂系エマルジョンからなることを特徴とする請求項４乃至５のいずれかに記載の水系塗材組成物であり、請求項４或いは５の効果に、密着性に優れ、塗膜物性が良いことが加わる。 The invention according to claim 6 is the water-based coating composition according to any one of claims 4 to 5, wherein the synthetic resin emulsion-based finish coating material defined in JIS A6909 is an acrylic resin-based emulsion. In addition to the effect of claim 4 or 5, it is excellent in adhesion and good coating film properties.
請求項７の発明は、ＪＩＳＡ６９０９に規定される合成樹脂エマルジョン系仕上塗材で凹凸を有する塗膜形成後、請求項１乃至６いずれか記載の水系塗材組成物を塗布することを特徴とする壁面施工方法であり、土壁様の風合いを有し、調湿性を有し、下地の動きに追従でき、耐久性のある壁構造となる。 The invention according to claim 7 is characterized in that the aqueous coating material composition according to any one of claims 1 to 6 is applied after forming a coating film having irregularities with a synthetic resin emulsion-based finishing coating material defined in JIS A6909. It is a wall surface construction method, has a clay-like texture, has humidity control, can follow the movement of the ground, and has a durable wall structure.
請求項８の発明は、請求項７記載の壁面施工方法で形成されることを特徴とする壁構造であり、土壁様の風合いを有し、調湿性を有し、下地の経時変化等による動きに追従し、壁の機能を損する割れの生じることがない。 The invention according to claim 8 is a wall structure characterized by being formed by the wall surface construction method according to claim 7, has a clay wall-like texture, has humidity control, and changes with time of the ground. It follows the movement and does not cause cracks that impair the function of the wall.
本発明は上記水系塗材組成物により、土壁の風合いを有し、調湿性を有し、土壁の風合いと共にひび割れを発生させ、土壁風でしかも経時変化でも、壁の機能を損する割れを生じることのない自然の風合いの意匠壁となり、また水系塗材の従来の意匠を組み合わせることにより、多様的な意匠を表現できる。 According to the present invention, the water-based coating composition has a texture of the earth wall, has humidity control, generates cracks along with the texture of the earth wall, and cracks that impair the function of the wall even when the earth wall style changes over time. A design wall with a natural texture that does not cause rust, and a variety of designs can be expressed by combining conventional designs of water-based coating materials.
本発明は土壁の風合い、吸放湿性を有し、耐震壁構造に対応し、施工時の下地の組み付けにも対応できるものである。従来の土壁は、工期が長く、職人の経験によるものが多く、現在の建築には対応し難い。現在の内装は在来工法、ツーバイフォー工法等でも、下地に石膏ボードが使われることが多く、この下地の組み付けには特段の工夫をしない限り下地素材の動きが目地部に現れ、経時で仕上げ表面に壁の機能を損する割れを生じることとなり、堅牢度と、下地に密着性だけでは十分ではない。通常の施工された下地に対して、ＪＩＳ Ａ６９０９に規定されるエマルジョン系塗材を下地材として塗布し、本発明の水系塗材組成物を塗布することにより、経時変化による壁の機能を損する割れを生じない、土壁の意匠、機能を有した壁構造の発明に至った。合成樹脂エマルジョン、粘土、シルト、砂、個々の性質の組み合わせによるもので、ひび割れ等の意匠、土壁の質感意匠、壁構造としての耐久性、傷に対する抵抗力を有するもので、下に各組成、方法等について記す。 The present invention has a texture of soil walls, moisture absorption and desorption, corresponds to a seismic wall structure, and can also be used for assembling the foundation during construction. Conventional earthen walls have a long construction period and are often based on the experience of craftsmen, and are difficult to cope with the current architecture. Gypsum board is often used as the base for conventional interiors and two-by-four methods, and the movement of the base material appears in the joints unless special measures are taken to assemble the base. Will cause cracks that impair the function of the wall, and fastness and adhesion to the substrate alone are not sufficient. Cracks that impair the function of the wall due to aging by applying the emulsion-based coating material specified in JIS A6909 as the base material to the normal construction base and applying the aqueous coating composition of the present invention. Invented a wall structure that has a design and function of earthen walls that does not cause any problems. Synthetic resin emulsion, clay, silt, sand, combination of individual properties, design such as cracks, texture design of earth wall, durability as wall structure, resistance to scratches, each composition below I will write about the method.
合成樹脂系エマルジョン
合成樹脂系エマルジョンは、アクリル酸エステル共重合系樹脂、酢酸ビニル樹脂、エチレン・酢酸ビニル系樹脂、酢酸ビニル・アクリル酸エステル系樹脂、エチレン・塩化ビニル系樹脂、シリコン変性アクリル系樹脂、ウレタン系樹脂等の樹脂エマルジョンが使用でき、成膜助剤無添加で、施工時温度以下の成膜温度を持つか、成膜助剤の添加により、実施条件で成膜条件を達成すれば、良い。これらには架橋タイプ、粉末型のエマルジョン等であっても使用できる。このうちアクリル酸エステル共重合系樹脂等のアクリル樹脂系エマルジョンが塗材乾燥後の塗膜物性がよく、好ましい。成膜助剤としてはテキサノール等が挙げられる。合成樹脂の固形分としては成膜助剤も含む。
Synthetic resin emulsions Synthetic resin emulsions are acrylic acid ester copolymer resins, vinyl acetate resins, ethylene / vinyl acetate resins, vinyl acetate / acrylic ester resins, ethylene / vinyl chloride resins, silicon-modified acrylic resins. Resin emulsions such as urethane resins can be used, with no film-forming aid added, having a film-forming temperature that is lower than the construction temperature, or by adding a film-forming aid to achieve the film-forming conditions under the operating conditions. ,good. These can be used even in a cross-linked type, powder type emulsion and the like. Of these, acrylic resin emulsions such as acrylic acid ester copolymer resins are preferable because they have good coating film properties after drying the coating material. Examples of film forming aids include texanol. The solid content of the synthetic resin includes a film forming aid.
土壁用土
土壁用土は淡路土、浅黄土、黄土、白土、京錆土など一般的に土壁に使用される左官用土であり、これに準じたものも使用可能である。
The soil for soil walls is a plastering soil generally used for soil walls, such as Awaji soil, shallow yellow soil, yellow soil, white soil, and Kyoto rust soil, and those according to this can also be used.
粘土・シルト・砂
粘土、シルト、砂は日本統一土質分類等で分類に準じ、粒径で分類する。粘土は５μｍ未満であり、透水性が低く、保水時に粘着力を示すものであるが、粒径で分類する。天然粘土や、クレー、タルク、珪藻土、及びベントナイト等が挙げることができる。また シルトは５〜７５μｍであり、上記土壁用土には、粘土、シルト、砂を含有する。炭酸カルシウム粉、珪石粉、寒水石粉等は粉砕程度に応じて、粒径により、シルト、砂の分類となる。
Clay, silt, sand clay, silt, and sand are classified by particle size according to the classification in the Japan unified soil classification. Clay is less than 5 μm, has low water permeability, and exhibits adhesive strength during water retention, but is classified by particle size. Natural clay, clay, talc, diatomaceous earth, bentonite and the like can be mentioned. The silt is 5 to 75 μm, and the soil for soil wall contains clay, silt and sand. Calcium carbonate powder, silica stone powder, cold water stone powder, etc. are classified into silt and sand according to the particle size depending on the degree of pulverization.
砂は、天然川砂、みじん砂、珪砂、炭酸カルシウム粉、寒水石粉、各種粉砕粉等、７５μ〜１．５ｍｍの粒状物とする。 The sand is a granular material of 75 μm to 1.5 mm such as natural river sand, fine sand, quartz sand, calcium carbonate powder, cold water stone powder, and various pulverized powders.
水系塗材組成物の形態
本発明の効果を得るための水系塗材組成物の形態は、揮発成分を除いた重量を１００重量％として、合成樹脂系エマルジョンの固形分２〜１２重量％、粘土およびシルト（土壁用土）２５〜３５重量％、砂５５〜７３重量％が好ましく、このうちひび割れを生じるには前記と同じ固形分を１００重量％として、合成樹脂系エマルジョンの固形分として ６〜１２重量％、粘土およびシルト（土壁用土）２６〜３５重量％、砂５５〜６５重量％が好ましい。市販の水系塗材、ＪＩＳＡ６９０９に規定される合成樹脂エマルジョン系仕上塗材に、粘土、シルト、砂を添加しても良い。塗材、塗料には、隠蔽性、着色を目的として、酸化チタン、体質顔料等が用いられるが、粒径に応じて、添加量を調整する。前記、水系塗材を用いる場合は、土壁用土と砂を添加しても良い。前記水系塗材の例として、アイカ工業（株）製アイカジョリパットＪＰ−１００、ＪＱ−６５０（いずれも商品名）などが挙げられる。
Form of water-based coating composition The form of the water-based coating composition for obtaining the effects of the present invention is as follows. The weight excluding volatile components is 100% by weight, the synthetic resin emulsion has a solid content of 2 to 12% by weight, and clay. And 25 to 35% by weight of silt (soil for soil wall) and 55 to 73% by weight of sand. Of these, in order to generate cracks, the same solid content as described above is taken as 100% by weight, and the solid content of the synthetic resin emulsion is 6 to 6%. 12% by weight, clay and silt (earth wall soil) 26-35% by weight, sand 55-65% by weight are preferred. Clay, silt, and sand may be added to a commercially available water-based coating material, a synthetic resin emulsion-based finishing coating material defined in JIS A6909. Titanium oxide, extender pigments, and the like are used for coating materials and paints for the purpose of concealing and coloring. The addition amount is adjusted according to the particle size. When the water-based coating material is used, soil wall soil and sand may be added. Examples of the water-based coating material include Aika Jolipat JP-100 and JQ-650 (both are trade names) manufactured by Aika Industry Co., Ltd.
施工方法
モルタル、石膏ボード、合板等に、必要に応じて、シーラーを塗布する。乾燥後本発明の水系塗材組成物の下地となる下塗り材を塗布する。下塗り材はＪＩＳＡ６９０９に規定する外装薄塗材Ｅ、可とう形外装薄塗材Ｅ、内装薄塗材Ｅ、外装厚塗材Ｅ、内装厚塗材Ｅ等の合成樹脂エマルジョン系仕上塗材で、塗布時に塗布具にて、凹凸を付与するか或いは粗めの砂（０．５〜２．５ｍｍ）にて、表面を均一に凹凸ができる様にする。この凹凸の大小、密度は添加する前記砂の大きさ、添加量により変えることができる。これにより、付着力の向上、下地材の強度向上均質化、ひび割れを均一化、望みにより形状を変化させる。この砂の種類に制限は無いが、塗布具の摩耗、粒径が揃っていること、入手性等で、寒水石が好ましい。添加量は、塗材に対して同重量部以下が好ましい。この下塗り材は１．０ｋｇ／ｍ２以上必要で、少ないとゼロスパン、すなわち、実使用のクラック（割れ）が発生し易い。この下塗り材乾燥後、本発明の水系塗材組成物を所望意匠に応じて、所定塗布厚コテ仕上げする。この下塗り材は耐水性、非透水性を賄っており、ひび割れによる壁性能の低下は無い。この仕上げ材となる水系塗材組成物は２．０ｋｇ／ｍ２以上塗布することでＪＩＳＡ６９０９に規定される吸放湿性７０以上となる。
意匠材料として、土壁で、補強用、割れ防止用に用いられるすさ、すなわち、藁すさ、紙すさ、麻すさ等も意匠上用いることができる。すさの長さ、素材の性質から、割れに及ぼす影響は千種万様であるが、本発明と組み合わせて、天然素材のもつ、安らぎを演出する意匠を創生できる。
Construction method Apply sealer to mortar, gypsum board, plywood, etc. if necessary. After drying, an undercoat material that serves as a base for the aqueous coating material composition of the present invention is applied. Undercoat materials are exterior coating materials E, flexible exterior coating materials E, interior coating materials E, exterior coating materials E, interior coating materials E, etc., as defined in JIS A6909. The surface is made uneven with rough or rough sand (0.5 to 2.5 mm). The size and density of the unevenness can be changed depending on the size and amount of the sand to be added. As a result, the adhesive force is improved, the strength of the base material is improved, the cracks are made uniform, and the shape is changed as desired. Although there is no restriction | limiting in the kind of this sand, Cold water stone is preferable at the wear of an applicator, that the particle size is uniform, availability, etc. The addition amount is preferably the same part by weight or less with respect to the coating material. The undercoat material needs to be 1.0 kg / m 2 or more, and if it is small, zero span, that is, cracks in actual use are likely to occur. After drying the undercoat material, the aqueous coating material composition of the present invention is finished with a predetermined coating thickness iron according to the desired design. This undercoating material covers water resistance and water impermeability, and there is no deterioration in wall performance due to cracks. By applying 2.0 kg / m 2 or more of the aqueous coating material composition as the finishing material, the moisture absorption / release property defined in JIS A6909 is 70 or more.
As the design material, it is also possible to use, as a design material, a soil wall used for reinforcement and crack prevention, i.e., haze, paper, hemp. Due to the length of the bush and the nature of the material, the effect on cracking is in the thousands, but in combination with the present invention, it is possible to create a design that produces the peacefulness of natural materials.
塗材配合例
アクロナールＹＪ−１７０１Ｄ（商品名、ＢＡＳＦディスパージョン（株）製、アクリル樹脂系エマルジョン、固形分５５％、ＭＦＴ２０℃）２５重量部、造膜助剤としてテキサノールＣＳ−１２（チッソ（株）製）１．５重量部、炭酸カルシウム粉（平均粒径２５μｍ）１０重量部、硅石粉（平均粒径１５０μｍ）４６重量部、チタン白（酸化チタン、顔料）３．５部、水１４重量部を配合し、混合撹拌し、水系塗材Ａとした。この塗材ＡはＪＩＳＡ６９０９外装薄塗材Ｅに適応される仕様を満足できる。
以下 前記 水系塗材Ａを用いて、実施例１〜６、比較例１、２の配合をし、これらの評価結果を表１に示した。
Coating material formulation example Acronal YJ-1701D (trade name, manufactured by BASF Dispersion Co., Ltd., acrylic resin emulsion, solid content 55%, MFT 20 ° C.) 25 parts by weight, Texanol CS-12 (Chisso Corporation) )) 1.5 parts by weight, calcium carbonate powder (average particle size 25 μm) 10 parts by weight, meteorite powder (average particle size 150 μm) 46 parts by weight, titanium white (titanium oxide, pigment) 3.5 parts, water 14 weights Parts were blended, mixed and stirred to obtain an aqueous coating material A. This coating material A can satisfy the specifications applicable to the JISA 6909 exterior thin coating material E.
Hereinafter, Examples 1 to 6 and Comparative Examples 1 and 2 were blended using the aqueous coating material A, and the evaluation results are shown in Table 1.
塗材Ａを３０重量部、土壁用土として、白土（近畿壁材工業（株）製）２２重量部、砂として、川砂５号（中内建材店製）１５重量部、寒水石５厘（（株）カルファイン製１．５ｍｍ）１５重量部、水１８重量部を配合して、実施例１の水系塗材組成物とした。 30 parts by weight of coating material A, 22 parts by weight of white clay (made by Kinki Wall Materials Co., Ltd.) as soil for soil walls, 15 parts by weight of Kawasago No. 5 (manufactured by Nakanai Construction Materials Store), 5 kg of cold water stone ( Calfine Fine Co., Ltd. 1.5 mm) was mixed with 15 parts by weight and 18 parts by weight of water to obtain an aqueous coating material composition of Example 1.
塗材Ａを３２重量部、土壁用土として、白土（近畿壁材工業（株）製）１６重量部、砂として、川砂５号（中内建材店製）１６重量部、寒水石５厘（（株）カルファイン製１．５ｍｍ）１６重量部、藁すさ（中塗すさ、(株)ヤブ原製）０．３重量部、水１９．７重量部を配合して、実施例２の水系塗材組成物とした。 32 parts by weight of coating material A, 16 parts by weight of white clay (manufactured by Kinki Wall Materials Co., Ltd.) as soil for soil walls, 16 parts by weight of Kawasago No. 5 (manufactured by Nakanai Construction Materials Store), 5 kg of cold water stone ( Aqueous coating of Example 2 was blended with 16 parts by weight of Calfine Co., Ltd. (1.5 mm), 0.3 parts by weight of Sasasa (Naka Co., Yabu), and 19.7 parts of water. A material composition was obtained.
塗材Ａを４２重量部、土壁用土として、白土（近畿壁材工業（株）製）１４重量部、砂として、川砂５号（中内建材店製）１４重量部、寒水石５厘（（株）カルファイン製１．５ｍｍ）１４重量部、水１６重量部を配合して、実施例３の水系塗材組成物とした。 42 parts by weight of coating material A, 14 parts by weight of white soil (made by Kinki Wall Materials Co., Ltd.) as soil for soil walls, 14 parts by weight of Kawasago No. 5 (manufactured by Nakanai Construction Materials Store), 5 kg of cold water stone ( Calfine Fine Co., Ltd. 1.5 mm) 14 parts by weight and 16 parts by weight of water were blended to prepare an aqueous coating material composition of Example 3.
塗材Ａを４８重量部、土壁用土として、白土（近畿壁材工業（株）製）１２重量部、砂として、川砂５号（中内建材店製）１２重量部、寒水石５厘（（株）カルファイン製１．５ｍｍ）１２重量部、水１５．７重量部を配合して、実施例４の水系塗材組成物とした。 48 parts by weight of coating material A, 12 parts by weight of white clay (made by Kinki Wall Materials Co., Ltd.) as soil for soil walls, 12 parts by weight of Kawasago No. 5 (manufactured by Nakanai Construction Materials Store), 5 kg of cold water stone ( Calfine Fine Co., Ltd. 1.5 mm) 12 parts by weight and 15.7 parts by weight of water were blended to prepare an aqueous coating material composition of Example 4.
塗材Ａを１３重量部、土壁用土として、白土（近畿壁材工業（株）製）１９重量部、砂として、みじん砂（中内建材店製）５２重量部、藁すさ（中塗すさ、(株)ヤブ原製）０．３重量部、水１５．７重量部を配合して、実施例５の水系塗材組成物とした。 13 parts by weight of coating material A, 19 parts by weight of white clay (produced by Kinki Wall Materials Co., Ltd.) as soil for soil walls, 52 parts by weight of fine sand (manufactured by Nakanai Building Materials Store), Yab Original Co., Ltd.) 0.3 parts by weight and 15.7 parts by weight of water were blended to prepare an aqueous coating material composition of Example 5.
塗材Ａを３１重量部、土壁用土として、白土（近畿壁材工業（株）製）１６重量部、砂として、みじん砂（中内建材店製）４１重量部、藁すさ（中塗すさ、(株)ヤブ原製）０．３重量部、水１１．７重量部を配合して、実施例６の水系塗材組成物とした。 31 parts by weight of coating material A, 16 parts by weight of white clay (manufactured by Kinki Wall Materials Co., Ltd.) as soil for soil walls, 41 parts by weight of fine sand (manufactured by Nakanai Kensakuten), Yab Original Co., Ltd.) 0.3 parts by weight and 11.7 parts by weight of water were blended to prepare an aqueous coating material composition of Example 6.
比較例１
塗材Ａを５４重量部、土壁用土として、白土（近畿壁材工業（株）製）８重量部、砂として、川砂５号（中内建材店製）１１重量部、寒水石５厘（（株）カルファイン製１．５ｍｍ）１４重量部、水１３重量部を配合して、比較例１の水系塗材組成物とした。
Comparative Example 1
54 parts by weight of coating material A, 8 parts by weight of white clay (made by Kinki Wall Materials Co., Ltd.) as soil for soil walls, 11 parts by weight of Kawasago No. 5 (manufactured by Nakanai Construction Materials Store), 5 kg of cold water stone ( Calfine Fine Co., Ltd. 1.5 mm) 14 parts by weight and 13 parts by weight of water were blended to prepare an aqueous coating material composition of Comparative Example 1.
比較例２
塗材Ａを無配合とし、土壁用土として、白土（近畿壁材工業（株）製）１４重量部、砂として、みじん砂（中内建材店製）５７重量部、水２９重量部を配合して、比較例２の水系塗材組成物とした。
Comparative Example 2
No coating material A is added, 14 parts by weight of white clay (Kinki Wall Materials Co., Ltd.) is used as soil for soil walls, 57 parts by weight of fine sand (manufactured by Nakanai Construction Materials Store) and 29 parts by weight of water are used as sand. Thus, an aqueous coating material composition of Comparative Example 2 was obtained.
その他比較例
実施例１〜６の表１の結果は下塗り材として水系塗材Ａを塗布したものであるが、これを塗布しないものはゼロスパン０．１以下となった。また 実施例の代わりに塗材Ａのみを塗布したものの、調湿性すなわちＪＩＳＡ６９０９（建築用仕上塗材）に規定の吸放湿性試験の結果は２５以下であった。
Other Comparative Examples The results shown in Table 1 of Examples 1 to 6 were obtained by applying the water-based coating material A as the undercoat material. Moreover, although only the coating material A was apply | coated instead of the Example, the result of the moisture absorption / release property test prescribed | regulated to humidity control property, ie, JISA6909 (finishing coating material for construction) was 25 or less.
評価方法
外観評価：２５℃にて、無風室内にて実験を行った。１ｍ角の石膏ボードにジョリパットシーラーＪＳ−５００（アイカ工業(株)製アクリル樹脂エマルジョン系、商品名）を塗布して乾燥させ、水系塗材Ａ１００重量部に寒水石３厘（（株）カルファイン製１．０ｍｍ）５０重量部を配合したものを１．５ｋｇ／ｍ２塗布乾燥した。これに実施例１〜６、比較例１、２の水系塗材組成物を２ｋｇ／ｍ２塗布し、自然乾燥した。
Evaluation method Appearance evaluation: An experiment was conducted at 25 ° C. in a windless room. Jolipat Sealer JS-500 (acrylic resin emulsion system, product name) manufactured by Aika Kogyo Co., Ltd. was applied to a 1m square plaster board and dried. (1.0 mm manufactured) 50 parts by weight were blended and dried at 1.5 kg / m 2 . The aqueous coating material compositions of Examples 1 to 6 and Comparative Examples 1 and 2 were applied to this at 2 kg / m 2 and air dried.
ひび割れ意匠：塗布後の外観を評価した。１ｍの距離から観察し、ひび割れが確認でき、全体の均一性のあるものを○、ひび割れが確認できないか、均一性がないものを×とした。 Crack design: Appearance after application was evaluated. Observed from a distance of 1 m, cracks could be confirmed, and those with overall uniformity were marked with ◯, those with no cracks confirmed or with no uniformity were marked with ×.
土壁意匠：ひび割れ意匠と同じく観察し、土壁風合いが全体にあるものを○、一部でも、合成樹脂エマルジョン塗材の風合いを持つものを×とした。 Earth wall design: Observed in the same manner as the cracked design, “O” indicates that the texture of the entire earth wall is on the whole, and “×” indicates that the texture of the synthetic resin emulsion coating material is partly.
付着強さ：ＪＩＳＡ６９０９（建築仕上塗材）に準拠し、標準状態の付着強さ試験を実施した。試験体は７０×７０ｍｍのモルタル板に実施例・比較例の塗材を塗布したものを２３℃、相対湿度６５％で１４日間養生したものを試験体とし、上部引張り用鋼製ジグを接着し測定を行なった。荷重速度は１５００Ｎ／ｍｉｎで引張り、最大引張荷重を測定し、付着強さ（単位：Ｎ／ｍｍ２）を算出した。
モルタル板は基板は、ＪＩＳＲ５２０１の１０．４（供試体の作り方）に規定する方法によって調製したモルタルを、内のり寸法７０×７０×２０ｍｍの金属製型枠を用いて成形し、温度２０±２℃、湿度８０％以上の状態で２４時間静置した後、脱型し、その後６日間２０±２℃の水中で養生し、更に７日間以上養生室で静置した後、ＪＩＳ Ｒ６２５２に規定する１５０番研磨紙を用いて成形時の下面を十分に研磨したものとする。
Adhesion strength: In accordance with JIS A6909 (architectural finishing coating material), a standard adhesion strength test was performed. The test specimen was a 70 x 70 mm mortar plate coated with the coating materials of the examples and comparative examples, and the specimen was cured for 14 days at 23 ° C and 65% relative humidity. Measurements were made. The load was pulled at 1500 N / min, the maximum tensile load was measured, and the adhesion strength (unit: N / mm 2 ) was calculated.
The mortar board was formed by molding a mortar prepared by the method specified in 10.4 of JIS R5201 (how to make a specimen) using a metal mold with an inner dimension of 70 × 70 × 20 mm, and a temperature of 20 ± 2 ° C. After leaving in a state where the humidity is 80% or more for 24 hours, the mold is removed, and then cured in water at 20 ± 2 ° C. for 6 days. After further standing in a curing room for 7 days or more, 150 specified in JIS R6252 It is assumed that the lower surface at the time of molding is sufficiently polished using the number polishing paper.
ゼロスパン：７０ｍｍ×７０ｍｍ×６ｍｍスレート基材を突き合わせ、その上に実施例、比較例の処方で、塗布し、２３℃、相対湿度５０％で１４日間静置後万能試験機にて測定を行った。引張り速度は２ｍｍ／ｍｉｎで引張り、ひび割れ部分以外で新たに割れを発生した時の距離或いはひび割れ部で下地から表面に及ぶ割れが発生した時の距離をゼロスパン距離（単位：ｍｍ）とした。距離とは図４ 符号２の突き合わせ面が、初期値０ｍｍから、引っ張りに応じて移動した距離である。評価として ゼロスパン距離が０．４ｍｍ以上のものを○、それ以外のものを×とした。 Zero span: 70 mm × 70 mm × 6 mm slate base materials were butted together, applied with the formulation of Examples and Comparative Examples, and allowed to stand at 23 ° C. and 50% relative humidity for 14 days, and then measured with a universal testing machine. . The tensile speed was 2 mm / min, and the distance when a new crack was generated at a portion other than the cracked portion or the distance when a crack extending from the substrate to the surface at the cracked portion was defined as the zero span distance (unit: mm). The distance is the distance that the butting surface 2 in FIG. 4 has moved from the initial value of 0 mm according to the tension. As an evaluation, those having a zero span distance of 0.4 mm or more were evaluated as ◯, and those other than that were evaluated as ×.
調湿性：ＪＩＳＡ６９０９（建築用仕上塗材）に規定の吸放湿性試験に基づき、吸放湿量を測定した。基板として、厚さ９．５ｍｍで、大きさが３００ｍｍ×３００ｍｍの石膏ボードに外観評価と同じく実施例・比較例の塗材組成物を塗布し、養生室に１２日間静置した後、裏面及び４側面をエポキシ樹脂接着剤で塗り包み、温度２３±２℃、湿度４５±５％の恒温恒湿器に４８時間静置したものを試験体とする。
試験の測定手順は、あらかじめ試験体の質量を測定し、温度２３±２℃、湿度４５±５％の恒温恒湿器に２４時間静置した後、質量を測定する。その後温度２３±２℃、湿度９０±５％の恒温恒湿器に２４時間静置した後、質量を測定する。このサイクルを２サイクル行い、これら試験体の吸放湿量をＪＩＳＡ６９０９に規定の吸放湿性試験の試験手順により算出した。（数値は平均１変化あたりｇ／ｍ２に換算したもの）
評価として 内装薄塗材、内装厚塗材の調湿形の規格である吸放湿性ｇ／ｍ２吸放湿量７０以上を満たすものを○、満たさないものを×とする。
Humidity control: The moisture absorption and desorption amount was measured based on the moisture absorption and desorption property prescribed in JIS A6909 (finishing coating material for construction). As a substrate, a coating material composition of Examples / Comparative Examples was applied to a gypsum board having a thickness of 9.5 mm and a size of 300 mm × 300 mm, as in the appearance evaluation, and left in a curing room for 12 days. Four test specimens are coated with an epoxy resin adhesive and allowed to stand for 48 hours in a thermo-hygrostat with a temperature of 23 ± 2 ° C. and a humidity of 45 ± 5%.
In the measurement procedure of the test, the mass of the test specimen is measured in advance, and after standing for 24 hours in a constant temperature and humidity chamber with a temperature of 23 ± 2 ° C. and a humidity of 45 ± 5%, the mass is measured. Then, after standing for 24 hours in a constant temperature and humidity chamber with a temperature of 23 ± 2 ° C. and a humidity of 90 ± 5%, the mass is measured. This cycle was performed for 2 cycles, and the moisture absorption and desorption amount of these specimens was calculated according to the test procedure of the moisture absorption and desorption property specified in JIS A6909. (Values are converted to g / m 2 per change on average)
As an evaluation, a case where the moisture absorbing / releasing g / m 2 moisture absorbing / releasing amount of 70 or more, which is the standard of the humidity control type of the interior thin coating material and the interior thick coating material, is evaluated as “◯”, and the case where it does not satisfy is “×”.
１ 塗材層
２ 突き合わせ面
３ 下地（石膏ボード）
４ 万能試験機つかみ具
1 Coating material layer 2 Abutting surface 3 Base (gypsum board)
4 Universal testing machine grip
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| CN114686105A (en) * | 2022-04-02 | 2022-07-01 | 洛阳百艺建筑装饰工程有限公司 | Straw paint for building wall and preparation method thereof |
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