JP2018193263A - Hydraulic polymer cement composition - Google Patents
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本発明は、熱水による洗浄を高頻度で行う食品工場床の下地コンクリート上に直接塗付可能であると共に、該食品工場床の下地コンクリート上に既に厚さ２〜９ｍｍ程度に形成された、ポリオール、ポリイソシアネート、セメント、骨材及び水、及び必要により希釈剤を含有してなる水硬性ポリマーセメント組成物の硬化塗膜上にさらに塗付することが出来る水硬性ポリマーセメント組成物に関し、特にはローラ刷毛で施工可能で熱水と冷水の繰り返し流下による熱衝撃性に優れる水硬性ポリマーセメント組成物に関する。 The present invention can be directly applied on the foundation concrete of the food factory floor which is frequently washed with hot water, and has already been formed to a thickness of about 2 to 9 mm on the foundation concrete of the food factory floor. The present invention relates to a hydraulic polymer cement composition that can be further applied onto a cured coating film of a hydraulic polymer cement composition comprising polyol, polyisocyanate, cement, aggregate and water, and optionally a diluent. Relates to a hydraulic polymer cement composition which can be applied with a roller brush and is excellent in thermal shock by repeated flowing of hot water and cold water.
従来、耐熱水性、耐摩耗性、耐衝撃性に優れる樹脂セメント組成物として、分子量が１０００〜３０００で両末端に水酸基を持ち、側鎖を持つポリエステルポリオールとポリフェニルポリメチルポリイソシアネート並びに水硬性セメントを含む骨材とが配合されていることを特徴とする樹脂セメント組成物が提案されている（特許文献１）。 Conventionally, as a resin cement composition excellent in hot water resistance, abrasion resistance, and impact resistance, a polyester polyol having a molecular weight of 1000 to 3000, having hydroxyl groups at both ends, having side chains, polyphenylpolymethylpolyisocyanate, and hydraulic cement There has been proposed a resin cement composition characterized in that it contains an aggregate containing slag (Patent Document 1).
また、施工現場での混合作業が行いやすく、作業性、性能、仕上がり外観にムラが生じにくく、耐熱性、耐熱水性、耐磨耗性、耐衝撃性などが要求される床などの施工に使用されるポリウレタン系セメント組成物として、少なくとも水分散型ポリオールを含むポリオールと、ポリフェニレンポリメチルポリイソ シアネートである疎水性イソシアネートと、水硬性セメントを含む骨材とから成り、コンクリートである基体上に塗布厚み４ｍｍで硬化させた組成物であって、厚み４ｍｍであって９５℃５分熱水と２０℃１０分冷水の養生を１サイクルとして２０００サイクル後の収縮応力が４．０±２．０Ｎ／ｍｍ２であり、１３００サイクル経過後に反り上がりや表層の亀裂が生じることがないことを特徴とするポリウレタン系セメント組成物が提案されている（特許文献２）。 In addition, it is easy to perform mixing work at the construction site, it is difficult to cause unevenness in workability, performance, and finished appearance, and it is used for construction of floors that require heat resistance, hot water resistance, wear resistance, impact resistance, etc. The polyurethane-based cement composition is composed of a polyol containing at least a water-dispersible polyol, a hydrophobic isocyanate which is a polyphenylene polymethyl polyisocyanate, and an aggregate containing a hydraulic cement, and is applied onto a substrate which is concrete. It is a composition cured at a thickness of 4 mm, and the shrinkage stress after 2000 cycles is 4.0 ± 2.0 N / cm, with a thickness of 4 mm and curing at 95 ° C. for 5 minutes with hot water at 20 ° C. for 10 minutes. A polyurethane-based cement composition that is mm 2 and does not warp or crack in the surface after 1300 cycles Has been proposed (Patent Document 2).
しかしながら、特許文献１に記載の樹脂セメント組成物及び特許文献２のポリウレタン系セメント組成物は、食品工場等の床下地コンクリート上に直接、厚さ２〜９ｍｍ程度に塗付されて硬化し、熱水による洗浄を高頻度で行う塗り床として使用に供されるものであり、施工に当たっては鏝（木鏝や金鏝）により２〜９ｍｍの一定の厚さで塗り拡げる必要があるため、該鏝を取り扱う技能を有する限られた職人しか施工できないという課題がある。 However, the resin cement composition disclosed in Patent Document 1 and the polyurethane cement composition disclosed in Patent Document 2 are applied directly to a floor foundation concrete of a food factory or the like to a thickness of about 2 to 9 mm, and are cured. Since it is used as a painted floor that is frequently washed with water, it is necessary to spread it with a certain thickness of 2 to 9 mm by using a hammer (wooden hammer or metal hammer). There is a problem that only a limited number of craftsmen with the skills to handle can be constructed.
また、特許文献１に記載の樹脂セメント組成物及び特許文献２のポリウレタン系セメント組成物が使用により摩耗した場合や汚れ等が生じた場合、又は該床全体を改修する際には、耐熱性、耐熱水性、耐衝撃性等が必要なため、塗膜を一度下地コンクリートに達するまで撤去し、その上で改めて２〜９ｍｍの一定厚みで樹脂セメント組成物又はポリウレタン系セメント組成物を塗付しなければならないという課題がある。 In addition, when the resin cement composition described in Patent Document 1 and the polyurethane-based cement composition of Patent Document 2 are worn or dirty due to use, or when the entire floor is repaired, Because hot water resistance, impact resistance, etc. are required, the coating must be removed until it reaches the ground concrete, and then a resin cement composition or polyurethane cement composition is applied again at a constant thickness of 2 to 9 mm. There is a problem that must be done.
本発明が解決しようとする課題は、誰もが取り扱うことが出来るローラ刷毛で施工可能で、下地コンクリートに直接又は、既にあるポリオール、ポリイソシアネート、セメント、骨材及び水、及び必要により希釈剤を含有してなる水硬性ポリマーセメント組成物の硬化塗膜上にさらに塗付することが出来、さらには熱水と冷水の繰り返し流下による熱衝撃性に優れ、耐摩耗性、耐衝撃性等を有する水硬性ポリマーセメント組成物を提供することにある。 The problem to be solved by the present invention is that it can be applied with a roller brush that can be handled by anyone, and the polyol, polyisocyanate, cement, aggregate and water, and if necessary, a diluent can be directly applied to the base concrete. It can be further applied onto the cured coating film of the hydraulic polymer cement composition it contains, and it has excellent thermal shock resistance due to repeated flow of hot water and cold water, and has wear resistance, impact resistance, etc. It is to provide a hydraulic polymer cement composition.
上記課題を解決するために請求項１記載の発明は、ポリオール、ポリイソシアネート、希釈剤、セメント、骨材及び水を含有してなる水硬性ポリマーセメント組成物であって、ポリオールはヒマシ油系ポリオールとビスフェノールＡ骨格を有する４官能ポリオールとから成り、ヒマシ油系ポリオールはヒマシ油系２官能ポリオールとヒマシ油系３官能ポリオールとからなりヒマシ油系２官能ポリオールは水酸基当量が１５０〜３２０であり、ヒマシ油系３官能ポリオールは水酸基当量が２５０〜４５０であり、ビスフェノールＡ骨格を有する４官能ポリオールは水酸基当量が２５０〜４５０であり、水酸基１個に対するＮＣＯ基の数が６．０〜７．０であり、骨材は真円度０．８〜１．０、平均粒径３．０〜１０．０μｍの溶融シリカから成り組成物全体１００重量部中の１０〜２０重量部であり、セメントは組成物全体１００重量部中の２５〜３５重量部であり、希釈剤はアルキルスルホン酸エステル化合物を含むことを特徴とする水硬性ポリマーセメント組成物を提供する。 In order to solve the above-mentioned problems, the invention according to claim 1 is a hydraulic polymer cement composition comprising a polyol, a polyisocyanate, a diluent, a cement, an aggregate, and water, wherein the polyol is a castor oil-based polyol. And a tetrafunctional polyol having a bisphenol A skeleton, a castor oil-based polyol is composed of a castor oil-based bifunctional polyol and a castor oil-based trifunctional polyol, and a castor oil-based bifunctional polyol has a hydroxyl group equivalent of 150 to 320, The castor oil trifunctional polyol has a hydroxyl equivalent of 250 to 450, the tetrafunctional polyol having a bisphenol A skeleton has a hydroxyl equivalent of 250 to 450, and the number of NCO groups per hydroxyl group is 6.0 to 7.0. The aggregate is made of fused silica having a roundness of 0.8 to 1.0 and an average particle size of 3.0 to 10.0 μm. 10 to 20 parts by weight in 100 parts by weight of the whole composition, 25 to 35 parts by weight of cement in 100 parts by weight of the whole composition, and a diluent containing an alkylsulfonic acid ester compound A hard polymer cement composition is provided.
また、請求項２記載の発明は、さらにベンズイミダゾール系化合物から成る防かび剤を含むことを特徴とする請求項１記載の水硬性ポリマーセメント組成物を提供する。 The invention according to claim 2 further provides a hydraulic polymer cement composition according to claim 1, further comprising a fungicide comprising a benzimidazole compound.
また、請求項３記載の発明は、ポリイソシアネートはポリメチルポリフェニルポリイソシアネートであることを特徴とする請求項１又は請求項２記載の水硬性ポリマーセメント組成物を提供する。 The invention according to claim 3 provides the hydraulic polymer cement composition according to claim 1 or 2, wherein the polyisocyanate is polymethyl polyphenyl polyisocyanate.
本発明の水硬性ポリマーセメント組成物は、熱水と冷水の繰り返し流下による熱衝撃性に優れ、耐摩耗性を有すると共に、重量物が落下しても剥離しないような耐衝撃性を有するという効果がある。また、まだ固まらない状態で下地コンクリート又は既にあるポリオール、ポリイソシアネート、セメント、骨材及び水、及び必要により希釈剤を含有してなる水硬性ポリマーセメント組成物の硬化塗膜上に塗付することが出来る時間が十分に有り、その際の作業性も低粘度であることから良好であり、ローラ刷毛で容易に施工できる効果がある。 The hydraulic polymer cement composition of the present invention is excellent in thermal shock resistance due to repeated flow of hot water and cold water, has wear resistance, and has an impact resistance that does not peel even if a heavy object falls. There is. In addition, it is applied on the cured coating film of the hydraulic polymer cement composition containing the base concrete or the existing polyol, polyisocyanate, cement, aggregate and water, and, if necessary, a diluent in an unset state. There is a sufficient time for this, and the workability at that time is also low because of its low viscosity, which is favorable and can be easily applied with a roller brush.
特に請求項２記載の発明は、食品工場床で行われているような熱水による洗浄が行われても、防かび性を長期に亘って保持する効果があり、食品工場床としての用途に優れるという効果がある。 In particular, the invention according to claim 2 has an effect of maintaining the antifungal property for a long period of time even when washing with hot water as is done on a food factory floor. There is an effect that it is excellent.
以下本発明について詳細に説明する。 The present invention will be described in detail below.
本発明の水硬性ポリマーセメント組成物は、ポリオール、ポリイソシアネート、希釈剤、セメント、骨材及び水を含有してなる水硬性ポリマーセメント組成物であって、ポリオールはヒマシ油系ポリオールとビスフェノールＡ骨格を有する４官能ポリオールとから成り、ヒマシ油系ポリオールはヒマシ油系２官能ポリオールとヒマシ油系３官能ポリオールとからなりヒマシ油系２官能ポリオールは水酸基当量が１５０〜３２０であり、ヒマシ油系３官能ポリオールは水酸基当量が２５０〜４５０であり、ビスフェノールＡ骨格を有する４官能ポリオールは水酸基当量が２５０〜４５０であり、水酸基１個に対するＮＣＯ基の数が６．０〜７．０であり、骨材は真円度０．８〜１．０、平均粒径３．０〜１０．０μｍの溶融シリカから成り組成物全体１００重量部中の１０〜２０重量部であり、セメントは組成物全体１００重量部中の２５〜３５重量部であり、希釈剤はアルキルスルホン酸エステル化合物を含むことを特徴とする水硬性ポリマーセメント組成物であり、必要に応じてこれらの他に、顔料、分散剤、消泡剤等の添加剤が配合することができる。 The hydraulic polymer cement composition of the present invention is a hydraulic polymer cement composition comprising a polyol, a polyisocyanate, a diluent, a cement, an aggregate, and water, wherein the polyol is a castor oil-based polyol and a bisphenol A skeleton. The castor oil-based polyol is composed of a castor oil-based bifunctional polyol and a castor oil-based trifunctional polyol, and the castor oil-based bifunctional polyol has a hydroxyl group equivalent of 150 to 320, and is castor oil-based 3 The functional polyol has a hydroxyl equivalent of 250 to 450, the tetrafunctional polyol having a bisphenol A skeleton has a hydroxyl equivalent of 250 to 450, the number of NCO groups per hydroxyl group is 6.0 to 7.0, The material is composed of fused silica having a roundness of 0.8 to 1.0 and an average particle size of 3.0 to 10.0 μm. 10 to 20 parts by weight in 100 parts by weight, 25 to 35 parts by weight of cement in 100 parts by weight of the whole composition, and a diluent containing an alkyl sulfonate compound It is a cement composition, and additives such as pigments, dispersants and antifoaming agents can be blended in addition to these as required.
本発明の水硬性ポリマーセメント組成物に使用されるポリオールは、ヒマシ油系ポリオールとビスフェノールＡ骨格を有する４官能ポリオールとから成り、ヒマシ油系ポリオールはヒマシ油系２官能ポリオールとヒマシ油系３官能ポリオールとから成る。 The polyol used in the hydraulic polymer cement composition of the present invention comprises a castor oil-based polyol and a tetrafunctional polyol having a bisphenol A skeleton, and the castor oil-based polyol is a castor oil-based bifunctional polyol and a castor oil-based trifunctional polymer. A polyol.
ビスフェノールＡ骨格を有する４官能ポリオールは、ビスフェノールＡ骨格を有するポリエポキシ化合物に活性水素化合物を反応させて得られるエポキシ開環ポリオールであり、水酸基当量は２５０〜４５０が好ましい。水酸基当量が２５０未満では水系ポリウレタン組成物としての硬化が速くなって作業性が不良となり、４５０超では水系ポリウレタン組成物として硬化後の強度が不十分となる。ビスフェノールＡ骨格を有する４官能ポリオールの配合量は組成物全体１００重量部中の０．５〜３重量部が好ましく、０．５重量部未満では組成物の硬化物の強度が低下する場合があり３重量部超では組成物をローラ刷毛で塗付する際の作業性が低下する場合がある。 The tetrafunctional polyol having a bisphenol A skeleton is an epoxy ring-opening polyol obtained by reacting an active hydrogen compound with a polyepoxy compound having a bisphenol A skeleton, and the hydroxyl equivalent is preferably 250 to 450. When the hydroxyl equivalent is less than 250, curing as a water-based polyurethane composition is accelerated, resulting in poor workability. When it exceeds 450, the strength after curing as a water-based polyurethane composition is insufficient. The blending amount of the tetrafunctional polyol having a bisphenol A skeleton is preferably 0.5 to 3 parts by weight in 100 parts by weight of the whole composition, and if it is less than 0.5 parts by weight, the strength of the cured product of the composition may decrease. If it exceeds 3 parts by weight, workability may be reduced when the composition is applied with a roller brush.
ヒマシ油系２官能ポリオールは、ヒマシ油を加工して得られた２官能ポリオールであり、その水酸基当量は１５０〜３２０が好ましい。１５０未満では、硬化が早くなって作業性が不良となる場合があり、３２０超では水硬性ポリマーセメント組成物として硬化後の強度が不十分となる場合がある。ヒマシ油系２官能ポリオールの配合量は組成物全体１００重量部中の１〜３重量部が好ましく、１重量部未満では組成物の硬化物の強度が低下し３重量部超では組成物をローラ刷毛で塗付する際の作業性が低下する。 The castor oil bifunctional polyol is a bifunctional polyol obtained by processing castor oil, and the hydroxyl equivalent is preferably 150 to 320. If it is less than 150, curing may be accelerated and workability may be poor, and if it exceeds 320, the strength after curing may be insufficient as a hydraulic polymer cement composition. The blending amount of the castor oil-based bifunctional polyol is preferably 1 to 3 parts by weight in 100 parts by weight of the whole composition, and if it is less than 1 part by weight, the strength of the cured product of the composition is lowered, and if it exceeds 3 parts by weight, the composition is rolled. Workability when applying with a brush is reduced.
本発明の水硬性ポリマーセメント組成物に使用されるヒマシ油系３官能ポリオールには、ヒマシ油又はその誘導体を使用することができ、水酸基数が３のポリオールである。本発明に使用するヒマシ油系３官能ポリオールの水酸基当量は、２５０〜４５０が好ましく、２５０未満では水系ポリウレタン組成物としての硬化が速くなって作業性が不良となり、４５０超では水硬性ポリマーセメント組成物として硬化後の強度が不十分となる。ヒマシ油系３官能ポリオールの配合量は組成物全体１００重量部中の４〜１０重量部が好ましく、４重量部未満では組成物の硬化物の強度が低下し１０重量部超では組成物をローラ刷毛で塗付する際の作業性が低下する。 As the castor oil-based trifunctional polyol used in the hydraulic polymer cement composition of the present invention, castor oil or a derivative thereof can be used, and the polyol has 3 hydroxyl groups. The hydroxyl equivalent of the castor oil-based trifunctional polyol used in the present invention is preferably 250 to 450, and if it is less than 250, curing as a water-based polyurethane composition becomes fast and workability becomes poor, and if it exceeds 450, the hydraulic polymer cement composition As a product, the strength after curing becomes insufficient. The compounding amount of the castor oil-based trifunctional polyol is preferably 4 to 10 parts by weight in 100 parts by weight of the whole composition, and if it is less than 4 parts by weight, the strength of the cured product of the composition is lowered. Workability when applying with a brush is reduced.
本発明の水硬性ポリマーセメント組成物に使用するポリイソシアネートは、作業性が良好となり、また低温での速硬化性さらには硬化後の強度が高いことより、４，４´−ジフェニルメタンジイソシアネートからなるポリメリックＭＤＩ（ポリメチルポリフェニルポリイソシアネート）を使用することが好ましく、ＮＣＯ当量は１００〜１５０が好ましい。ＮＣＯ当量が１００未満では硬化物が発泡による膨れが生じる等で仕上がりが不良となり、ＮＣＯ当量が１５０超では硬化後の強度が不十分となる。もちろん、他の脂肪族ポリイソシアネートや芳香族ポリイソシアネートや脂環式ポリイソシアネート等も使用することもでき、また併用することも可能である。ポリイソシアネートの配合量は組成物全体１００重量部中の２０〜４０重量部が好ましく、２０重量部未満では組成物の硬化物の強度が低下し４０重量部超では硬化物が発泡による膨れが生じる等で仕上がりが不良となる。 The polyisocyanate used in the hydraulic polymer cement composition of the present invention has good workability, is fast-curing at low temperature, and has high strength after curing, so that a polymer composed of 4,4′-diphenylmethane diisocyanate is used. MDI (polymethyl polyphenyl polyisocyanate) is preferably used, and the NCO equivalent is preferably 100 to 150. If the NCO equivalent is less than 100, the cured product will be swollen due to foaming or the like, and the finish will be poor. If the NCO equivalent exceeds 150, the strength after curing will be insufficient. Of course, other aliphatic polyisocyanates, aromatic polyisocyanates, alicyclic polyisocyanates and the like can also be used, and can also be used in combination. The blending amount of the polyisocyanate is preferably 20 to 40 parts by weight in 100 parts by weight of the whole composition. If it is less than 20 parts by weight, the strength of the cured product of the composition is lowered, and if it exceeds 40 parts by weight, the cured product is swollen by foaming. The finish will be poor.
ポリオールの水酸基一個に対するイソシアネート基の数は、６．０〜７．０が好ましく、６．０未満では耐熱衝撃性が低下し、７．０超では可使時間が短くなって塗付作業性が不良となる。 The number of isocyanate groups relative to one hydroxyl group of the polyol is preferably 6.0 to 7.0. If it is less than 6.0, the thermal shock resistance decreases, and if it exceeds 7.0, the pot life is shortened and the coating workability is reduced. It becomes defective.
本発明の水硬性ポリマーセメント組成物に使用する希釈剤はアルキルスルホン酸エステル化合物を含み、組成物を低粘度としてローラ刷毛にて下地コンクリート又は既存の塗膜上に容易に塗付可能にしている。アルキルスルホン酸エステル化合物は非フタル酸系の可塑剤であり、市販品としてメザモール（商品名、１００％アルキルスルホン酸エステル化合物、バイエル社製）がある。アルキルスルホン酸エステル化合物の配合量は組成物全体１００重量部中の４〜１０重量部が好ましく、４重量部未満では組成物をローラ刷毛で塗付する際の作業性が低下し、１０重量部超では組成物の硬化物の強度が低下する。 The diluent used in the hydraulic polymer cement composition of the present invention contains an alkyl sulfonic acid ester compound, and the composition has a low viscosity so that it can be easily applied to underlying concrete or an existing coating film with a roller brush. . The alkyl sulfonic acid ester compound is a non-phthalic acid plasticizer, and mezamol (trade name, 100% alkyl sulfonic acid ester compound, manufactured by Bayer) is a commercially available product. The blending amount of the alkyl sulfonic acid ester compound is preferably 4 to 10 parts by weight in 100 parts by weight of the whole composition, and if it is less than 4 parts by weight, the workability when applying the composition with a roller brush is lowered, and 10 parts by weight. If it is too high, the strength of the cured product of the composition will decrease.
本発明の水硬性ポリマーセメント組成物に使用するベンズイミダゾール系化合物から成る防かび剤は、熱に対する安定性とｐＨに対する安定性が高いため、熱水洗浄が行われ、組成物としてセメントを含有する本水硬性ポリマーセメント組成物に適する防かび剤として使用される。市販品として１０％水懸濁液としてコートサイドＤ２（商品名、日本エンバイロケミカルズ株式会社製）がある。ベンズイミダゾール系化合物から成る防かび剤の配合量は、組成物全体１００重量部に対して０．６〜４．０重量部が好ましい。０．６重量部未満では防かび効果が不十分であり、４．０重量部超ではコスト高と成る。 The fungicide comprising a benzimidazole compound used in the hydraulic polymer cement composition of the present invention has high heat stability and high pH stability, and thus is washed with hot water and contains cement as a composition. Used as a fungicide suitable for the present hydraulic polymer cement composition. As a commercial product, there is Coatside D2 (trade name, manufactured by Nippon Enviro Chemicals Co., Ltd.) as a 10% aqueous suspension. As for the compounding quantity of the fungicide which consists of a benzimidazole type compound, 0.6-4.0 weight part is preferable with respect to 100 weight part of the whole composition. If it is less than 0.6 parts by weight, the fungicidal effect is insufficient, and if it exceeds 4.0 parts by weight, the cost is high.
本発明の水硬性ポリマーセメント組成物に使用するセメントは、本発明の水系ポリウレタン組成物が床下地コンクリートに塗布し美観を付与することを目的としているため、特定の色調が付与できるように、主として白色ポルトランドセメントを使用することが好ましい。他に普通ポルトランドセメント、アルミナセメント、高炉セメント、早強ポルトランドセメントを併用することができる。セメントの配合量は組成物全体１００重量部中の２５〜３５重量部である。２５重量部未満では組成物の硬化物の強度が低下し、３５重量部超では組成物をローラ刷毛で塗付する際の作業性が低下する。 The cement used in the hydraulic polymer cement composition of the present invention is intended to give the aesthetic appearance by applying the water-based polyurethane composition of the present invention to the floor foundation concrete, so that a specific color tone can be imparted mainly. It is preferred to use white Portland cement. In addition, ordinary Portland cement, alumina cement, blast furnace cement, and early-strength Portland cement can be used in combination. The blending amount of cement is 25 to 35 parts by weight in 100 parts by weight of the whole composition. If it is less than 25 parts by weight, the strength of the cured product of the composition is lowered, and if it exceeds 35 parts by weight, workability when the composition is applied with a roller brush is lowered.
本発明の水硬性ポリマーセメント組成物に使用する骨材には、本組成物をローラ刷毛で塗付できるようにすることを目的として、真円度０．８〜１．０で平均粒径３．０〜１０．０μｍの溶融シリカから成り、該骨材の配合部数は組成物全体１００重量部中の１０〜２０重量部である。１０重量部未満では耐熱衝撃性が低下し、２０重量部超では、ローラ刷毛で塗付する際の作業性が低下する。 The aggregate used in the hydraulic polymer cement composition of the present invention has a roundness of 0.8 to 1.0 and an average particle size of 3 for the purpose of allowing the composition to be applied with a roller brush. It consists of 0.01 to 10.0 μm fused silica, and the amount of the aggregate is 10 to 20 parts by weight in 100 parts by weight of the whole composition. If it is less than 10 parts by weight, the thermal shock resistance decreases, and if it exceeds 20 parts by weight, the workability when applying with a roller brush decreases.
溶融シリカは、原料の珪石等を高温で溶融し、表面張力により球状化させたものであり、ＳｉＯ２の含有率は９５〜１００重量％である。真円度とは粒子の投影像から得られる該像の面積を、該像の周囲長と同一長の真円の面積で除した値を言い、本発明に使用する溶融シリカの真円度は０．８〜１．０である。真円度が０．８未満では組成物をローラ刷毛で塗付した際の平滑性が不十分となることがある。 Fused silica is obtained by melting raw material silica or the like at high temperature and spheroidizing it by surface tension, and the content of SiO 2 is 95 to 100% by weight. Roundness means the value obtained by dividing the area of the image obtained from the projected image of the particle by the area of the perfect circle having the same length as the circumference of the image, and the roundness of the fused silica used in the present invention is 0.8-1.0. If the roundness is less than 0.8, smoothness may be insufficient when the composition is applied with a roller brush.
本明細書において平均粒径とは、レーザ回析散乱法で測定した体積基準の値であり、具体的にはレーザ散乱式粒度分布計により得られる粒度分布に基づいて、体積基準の平均粒子径Ｄ５０値（累積５０％メジアン径）であり、本発明で使用する溶融シリカの平均粒径は３．０〜１０．０μｍである。平均粒径が３．０μｍ未満では組成物をローラ刷毛で塗付する際の作業性が低下し、１０．０μｍ超では組成物をローラ刷毛で塗付した際の平滑性が不十分となる。 In the present specification, the average particle diameter is a volume-based value measured by a laser diffraction scattering method. Specifically, based on the particle size distribution obtained by a laser scattering particle size distribution meter, the volume-based average particle diameter. a D 50 value (50% cumulative median size), the average particle size of the fused silica used in the present invention is 3.0～10.0Myuemu. When the average particle size is less than 3.0 μm, the workability when the composition is applied with a roller brush is lowered, and when it exceeds 10.0 μm, the smoothness when the composition is applied with a roller brush becomes insufficient.
本発明の水硬性ポリマーセメント組成物はローラ刷毛にて、下地コンクリート又は下地コンクリート上に既に厚さ２〜９ｍｍ程度に形成された、ポリオール、ポリイソシアネート、セメント、骨材及び水、及び必要により希釈剤を含有してなる水硬性ポリマーセメント組成物の硬化塗膜上にさらに塗付する。ローラ刷毛は、毛丈１０〜１５ｍｍが好ましく、塗付厚みは０．１〜０．２ｍｍ、塗付量は０．２〜０．４ｋｇ／ｍ２が好ましい。このような施工性（ローラ刷毛作業性）を得るためを、本発明の水硬性ポリマーセメント組成物は、骨材に上記溶融シリカを使用し、その配合量も組成物全体１００重量部中の１０〜２０重量部としている。 The hydraulic polymer cement composition of the present invention is a roller brush, and is already formed to a thickness of about 2 to 9 mm on the base concrete or base concrete, polyol, polyisocyanate, cement, aggregate and water, and diluted if necessary It is further applied onto the cured coating film of the hydraulic polymer cement composition containing the agent. Roller brush is preferably Hair length 10-15 mm, coated with a thickness of 0.1 to 0.2 mm, the amount with the coating is preferably 0.2~0.4kg / m 2. In order to obtain such workability (roller brush workability), the hydraulic polymer cement composition of the present invention uses the above fused silica as an aggregate, and its blending amount is 10 in 100 parts by weight of the whole composition. ˜20 parts by weight.
以下、実施例及び比較例にて具体的に説明する。 Hereinafter, it demonstrates concretely in an Example and a comparative example.
［実施例］
水酸基当量が１６０のヒマシ油系２官能ポリオール８重量部と水酸基当量が３５０のヒマシ油系３官能ポリオール２０重量部と水酸基当量が３５０のビスフェノールＡ骨格を有する４官能ポリオール４重量部とアルキルスルホン酸エステル化合物としてメザモールを２２重量部とフタル酸ジオクチルを６重量部とイオン交換水２０重量部と着色トナー２０重量部（水１０重量部、顔料１０重量部）から成るポリオールと希釈剤と水を含む主剤１００重量部と、ポリイソシアネートとしてポリメリックＭＤＩ（ポリメチルポリフェニルポリイソシアネート）であるルプラネートＭＢ−５Ｓ（商品名、ＢＡＳＦ ＩＮＯＡＣポリウレタン株式会社製、ＮＣＯ重量％：３１．４〜３２．６％）を硬化剤１００重量部とし、骨材として溶融シリカ（真円度０．９９、平均粒径４．２μｍ、ＳｉＯ２含有量９９％以上）５０重量部と白色ポルトランドセメント（太平洋セメント社製）１００重量部を混合し全体として１５０重量部としたものを骨材部とし、主剤：硬化剤：骨材部を１００重量部：１００重量部：１５０重量部で均一に混合したものを実施例１の水硬性ポリマーセメント組成物とした。実施例１の水酸基１個当たりのＮＣＯ基数は６．５である。
[Example]
8 parts by weight of a castor oil-based bifunctional polyol having a hydroxyl group equivalent of 160, 20 parts by weight of a castor oil-based trifunctional polyol having a hydroxyl group equivalent of 350, 4 parts by weight of a tetrafunctional polyol having a bisphenol A skeleton having a hydroxyl group equivalent of 350, and alkylsulfonic acid As an ester compound, 22 parts by weight of mezamol, 6 parts by weight of dioctyl phthalate, 20 parts by weight of ion-exchanged water, 20 parts by weight of colored toner (10 parts by weight of water, 10 parts by weight of pigment), a diluent, and water are included. 100 parts by weight of the main agent and Lupranate MB-5S (trade name, manufactured by BASF INOAC Polyurethane Co., Ltd., NCO weight%: 31.4 to 32.6%) which is polymeric MDI (polymethyl polyphenyl polyisocyanate) as polyisocyanate 100 parts by weight of curing agent, fused silica as aggregate (round A mixture of 50 parts by weight of 0.99 degree, average particle size of 4.2 μm, SiO 2 content of 99% or more) and 100 parts by weight of white Portland cement (manufactured by Taiheiyo Cement Co., Ltd.) to give a total of 150 parts by weight. The hydraulic polymer cement composition of Example 1 was obtained by uniformly mixing 100 parts by weight: 100 parts by weight: 150 parts by weight with the main agent: the curing agent: the aggregate part. The number of NCO groups per hydroxyl group in Example 1 is 6.5.
実施例１の主剤９７重量部にベンズイミダゾール系化合物から成る防かび剤としてコートサイドＤ２（１０％水懸濁液）３重量部を混合して全体として１００重量部として実施例２の主剤１００重量部とし、硬化剤と、骨材部は実施例１と同じとし、主剤：硬化剤：骨材部を１００重量部：１００重量部：１５０重量部で均一に混合したものを実施例１の水硬性ポリマーセメント組成物とした。実施例２の水酸基１個当たりのＮＣＯ基数は６．７である。 97 parts by weight of the main agent of Example 1 was mixed with 3 parts by weight of a coatside D2 (10% aqueous suspension) as a fungicide composed of a benzimidazole compound to make 100 parts by weight as a whole. The hardener and the aggregate part were the same as in Example 1, and the water of Example 1 was obtained by uniformly mixing 100 parts by weight: 100 parts by weight: 150 parts by weight of the main agent: hardener: aggregate part. A hard polymer cement composition was obtained. The number of NCO groups per hydroxyl group in Example 2 is 6.7.
水酸基当量が１６０の水酸基当量が３５０のヒマシ油系３官能ポリオール２８重量部と水酸基当量が３５０のビスフェノールＡ骨格を有する４官能ポリオール６重量部とアルキルスルホン酸エステル化合物としてメザモールを２５重量部とイオン交換水２１重量部と着色トナー２０重量部（水１０重量部、顔料１０重量部）から成るポリオールと希釈剤と水を含む主剤１００重量部と、ポリイソシアネートとしてポリメリックＭＤＩ（ポリメチルポリフェニルポリイソシアネート）であるルプラネートＭＢ−５Ｓ（商品名、ＢＡＳＦ ＩＮＯＡＣポリウレタン株式会社製、ＮＣＯ重量％：３１．４〜３２．６％）を硬化剤１００重量部とし、骨材として溶融シリカ（真円度０．９９、平均粒径４．２μｍ、ＳｉＯ２含有量９９％以上）５０重量部と白色ポルトランドセメント（太平洋セメント社製）１００重量部を混合し全体として１５０重量部としたものを骨材部とし、主剤：硬化剤：骨材部を１００重量部：１００重量部：１５０重量部で均一に混合したものを比較例１の水硬性ポリマーセメント組成物とした。比較例１の水酸基１個当たりのＮＣＯ基数は７．９である。 28 parts by weight of a castor oil-based trifunctional polyol having a hydroxyl group equivalent of 160 and a hydroxyl group equivalent of 350, 6 parts by weight of a tetrafunctional polyol having a bisphenol A skeleton having a hydroxyl group equivalent of 350 and 25 parts by weight of mezamol as an alkyl sulfonate compound 100 parts by weight of a main agent containing a polyol, a diluent and water consisting of 21 parts by weight of replacement water and 20 parts by weight of colored toner (10 parts by weight of water and 10 parts by weight of pigment), and polymeric MDI (polymethyl polyphenyl polyisocyanate as polyisocyanate) ) Lupranate MB-5S (trade name, manufactured by BASF INOAC Polyurethane Co., Ltd., NCO weight%: 31.4 to 32.6%) is 100 parts by weight of the curing agent, and fused silica (roundness: 0. 99, average particle size 4.2 μm, SiO 2 content 99% or more) 50 weight Part and white Portland cement (manufactured by Taiheiyo Cement Co., Ltd.) are mixed to give a total of 150 parts by weight as an aggregate part. The main agent: hardener: aggregate part is 100 parts by weight: 100 parts by weight: 150 parts by weight. The hydraulic polymer cement composition of Comparative Example 1 was obtained by uniformly mixing the parts. The number of NCO groups per hydroxyl group in Comparative Example 1 is 7.9.
水酸基当量が１６０のヒマシ油系２官能ポリオール１３重量部と水酸基当量が３５０のヒマシ油系３官能ポリオール１５重量部と水酸基当量が３５０のビスフェノールＡ骨格を有する４官能ポリオール４重量部とアルキルスルホン酸エステル化合物としてメザモールを２０重量部とフタル酸ジオクチルを９重量部とイオン交換水１９重量部と着色トナー２０重量部（水１０重量部、顔料１０重量部）から成るポリオールと希釈剤と水を含む主剤１００重量部と、ポリイソシアネートとしてポリメリックＭＤＩ（ポリメチルポリフェニルポリイソシアネート）であるルプラネートＭＢ−５Ｓ（商品名、ＢＡＳＦ ＩＮＯＡＣポリウレタン株式会社製、ＮＣＯ重量％：３１．４〜３２．６％）を硬化剤１００重量部とし、骨材として溶融シリカ（真円度０．９９、平均粒径４．２μｍ、ＳｉＯ２含有量９９％以上）５０重量部と白色ポルトランドセメント（太平洋セメント社製）１００重量部を混合し全体として１５０重量部としたものを骨材部とし、主剤：硬化剤：骨材部を１００重量部：１００重量部：１５０重量部で均一に混合したものを比較例２の水硬性ポリマーセメント組成物とした。比較例２の水酸基１個当たりのＮＣＯ基数は５．７である。 13 parts by weight of a castor oil bifunctional polyol having a hydroxyl group equivalent of 160, 15 parts by weight of a castor oil trifunctional polyol having a hydroxyl group equivalent of 350, 4 parts by weight of a tetrafunctional polyol having a bisphenol A skeleton having a hydroxyl group equivalent of 350, and alkylsulfonic acid As an ester compound, 20 parts by weight of mezamol, 9 parts by weight of dioctyl phthalate, 19 parts by weight of ion exchange water, 20 parts by weight of colored toner (10 parts by weight of water, 10 parts by weight of pigment), a diluent, and water are included. 100 parts by weight of the main agent and Lupranate MB-5S (trade name, manufactured by BASF INOAC Polyurethane Co., Ltd., NCO weight%: 31.4 to 32.6%) which is polymeric MDI (polymethyl polyphenyl polyisocyanate) as polyisocyanate 100 parts by weight of the curing agent, fused silica as the aggregate (true A mixture of 50 parts by weight of circularity 0.99, average particle size 4.2 μm, SiO 2 content 99% or more) and 100 parts by weight of white Portland cement (manufactured by Taiheiyo Cement Co., Ltd.) to give a total of 150 parts by weight The hydraulic polymer cement composition of Comparative Example 2 was obtained by uniformly mixing 100 parts by weight: 100 parts by weight: 150 parts by weight of the base material: the curing agent: the aggregate part. The number of NCO groups per hydroxyl group in Comparative Example 2 is 5.7.
水酸基当量が１６０のヒマシ油系２官能ポリオール６重量部と水酸基当量が３５０のヒマシ油系３官能ポリオール２２重量部と水酸基当量が３５０のビスフェノールＡ骨格を有する４官能ポリオール４．５重量部とアルキルスルホン酸エステル化合物としてメザモールを２３重量部とフタル酸ジオクチルを４．５重量部とイオン交換水２０重量部と着色トナー２０重量部（水１０重量部、顔料１０重量部）から成るポリオールと希釈剤と水を含む主剤１００重量部と、ポリイソシアネートとしてポリメリックＭＤＩ（ポリメチルポリフェニルポリイソシアネート）であるルプラネートＭＢ−５Ｓ（商品名、ＢＡＳＦ ＩＮＯＡＣポリウレタン株式会社製、ＮＣＯ重量％：３１．４〜３２．６％）を硬化剤１００重量部とし、骨材として溶融シリカ（真円度０．９９、平均粒径４．２μｍ、ＳｉＯ２含有量９９％以上）５０重量部と白色ポルトランドセメント（太平洋セメント社製）１００重量部を混合し全体として１５０重量部としたものを骨材部とし、主剤：硬化剤：骨材部を１００重量部：１００重量部：１５０重量部で均一に混合したものを比較例３の水硬性ポリマーセメント組成物とした。比較例３の水酸基１個当たりのＮＣＯ基数は７．７である。 6 parts by weight of castor oil bifunctional polyol having a hydroxyl group equivalent of 160, 22 parts by weight of castor oil trifunctional polyol having a hydroxyl group equivalent of 350, 4.5 parts by weight of tetrafunctional polyol having a bisphenol A skeleton having a hydroxyl group equivalent of 350, and alkyl A polyol and a diluent comprising 23 parts by weight of mezamol, 4.5 parts by weight of dioctyl phthalate, 20 parts by weight of ion-exchanged water, and 20 parts by weight of colored toner (10 parts by weight of water and 10 parts by weight of pigment) And 100 parts by weight of a main agent containing water and Lupranate MB-5S (trade name, manufactured by BASF INOAC Polyurethane Co., Ltd., NCO weight%: 31.4-32. 6%) is 100 parts by weight of curing agent, and fused silica as an aggregate 50 parts by weight (roundness 0.99, average particle size 4.2 μm, SiO 2 content 99% or more) and 100 parts by weight of white Portland cement (manufactured by Taiheiyo Cement) were mixed to make 150 parts by weight as a whole. A hydraulic polymer cement composition of Comparative Example 3 was prepared by uniformly mixing the base material: the curing agent: the aggregate part with 100 parts by weight: 100 parts by weight: 150 parts by weight. The number of NCO groups per hydroxyl group in Comparative Example 3 is 7.7.
上記実施例２のベンズイミダゾール系化合物から成る防かび剤に代えて有機ヨウ素系化合物から成る防かび剤であるコートサイドＰＨ２（商品名、日本エンバイロケミカル株式会社製）を使用した以外は、実施例２と同一にしたものを実施例３の水硬性ポリマーセメント組成物とした。 Example 1 except that coatside PH2 (trade name, manufactured by Nippon Enviro Chemical Co., Ltd.), which is an antifungal agent comprising an organic iodine compound, was used instead of the antifungal agent comprising the benzimidazole compound of Example 2 above. 2 was used as the hydraulic polymer cement composition of Example 3.
［評価項目及び評価方法］ [Evaluation items and methods]
［粘度及び揺変値］
２３℃下において実施例及び比較例の水硬性ポリマーセメント組成物の混合物（混合直後）について、ＢＭ型粘度計（ローターＮｏ４、回転数６０ｒｐｍ）にて粘度（Ｐａ・ｓ）を測定した。２．０Ｐａ・ｓ未満を○とし、２．０Ｐａ・ｓ以上を×と評価した。また、同ＢＭ型粘度計にてローターＮｏ４、６ｒｐｍの粘度を測定し、６ｒｐｍ時の粘度を６０ｒｐｍ時の粘度で除した値を揺変値とした。揺変値は１．０以上１．５未満を○と評価し、これ以外を×と評価した。
[Viscosity and fluctuation values]
The viscosity (Pa · s) of the mixture of the hydraulic polymer cement compositions of Examples and Comparative Examples (immediately after mixing) at 23 ° C. was measured with a BM viscometer (rotor No. 4, rotation speed: 60 rpm). Less than 2.0 Pa · s was evaluated as ◯, and 2.0 Pa · s or more was evaluated as ×. Moreover, the viscosity of rotor No. 4 and 6 rpm was measured with the same BM type viscometer, and the value obtained by dividing the viscosity at 6 rpm by the viscosity at 60 rpm was defined as the fluctuation value. The variation value of 1.0 or more and less than 1.5 was evaluated as ○, and other than this was evaluated as ×.
［耐摩耗性］
２３℃下にて７日養生後の実施例及び比較例の水硬性ポリマーセメント組成物の硬化物について、ＪＩＳＫ ７２０４（プラスチック−摩耗輪による摩耗試験方法）に準拠し、摩耗輪（ＣＳ−１７）、荷重９．８Ｎ、１０００回転の摩耗量を測定した。１００ｍｇ未満であれば耐摩耗性を有すると評価した。
[Abrasion resistance]
About the hardened | cured material of the hydraulic polymer cement composition of the Example after a 7-day curing at 23 degreeC, and a comparative example, according to JISK7204 (Abrasion test method with a plastics-abrasion ring), Abrasion wheel (CS-17) The amount of wear at a load of 9.8 N and 1000 rotations was measured. If it was less than 100 mg, it was evaluated as having abrasion resistance.
［圧縮強さ］
２３℃下にて７日養生後の実施例及び比較例の水硬性ポリマーセメント組成物の硬化物について、ＪＩＳＫ６９１１の規定に準じて圧縮強さ（Ｎ/ｍｍ２）を測定した。試験体の大きさは１３ｍｍ×１３ｍｍ×２５ｍｍとした。圧縮強さが４０Ｎ/ｍｍ２超であれば十分な強度を有すると評価した。
[Compression strength]
Compressive strength (N / mm 2 ) was measured according to JISK6911 for the cured products of the hydraulic polymer cement compositions of Examples and Comparative Examples after curing for 7 days at 23 ° C. The size of the test body was 13 mm × 13 mm × 25 mm. If the compressive strength was over 40 N / mm 2 , it was evaluated as having sufficient strength.
［耐熱性］
２３℃にて７日養生後にさらに８５℃熱水に７日間浸漬し、２３℃に徐冷した実施例及び比較例の水硬性ポリマーセメント組成物の硬化物について、ＪＩＳＫ６９１１の規定に準じて圧縮強さ（Ｎ/ｍｍ２）を測定した。試験体の大きさは１３ｍｍ×１３ｍｍ×２５ｍｍとした。得られた圧縮強さの値を上記２３℃７日養生後の圧縮強さにて除し保持率（％）を求めた。保持率９０％超であれば耐熱性を有すると評価した。
[Heat-resistant]
After curing for 7 days at 23 ° C, the cured products of the hydraulic polymer cement compositions of Examples and Comparative Examples, which were further immersed in hot water at 85 ° C for 7 days and gradually cooled to 23 ° C, were subjected to compressive strength in accordance with JISK6911. (N / mm 2 ) was measured. The size of the test body was 13 mm × 13 mm × 25 mm. The value of compressive strength obtained was divided by the compressive strength after curing at 23 ° C. for 7 days to obtain the retention rate (%). If the retention rate exceeded 90%, it was evaluated as having heat resistance.
［耐衝撃性］
２３℃下でＪＩＳＡ５３７１の３００ｍｍ×３００ｍｍ×厚さ６０ｍｍの乾燥したコンクリート平板（ケット水分計ＨＩ−５２０コンクリートレンジにて表示値５％以下）の表面に、均一に混合した実施例、比較例の水硬性ポリマーセメント組成物を厚さ約０．２ｍｍにローラ刷毛（ウーローラー毛丈１０〜１５ｍｍ、大塚刷毛社製）にて塗付して７日間養生し、中央部に高さ１ｍから１ｋｇの鋼球を７回落下させ、塗膜に割れ、剥がれ等の異常のないものを○、割れ、剥がれ等の異常が生じたものを×と評価した。
[Shock resistance]
Example 23 and Comparative Example water mixed uniformly on the surface of a dried concrete flat plate of 300 mm x 300 mm x 60 mm thick (indicated value of 5% or less on the Ket Moisture Meter HI-520) at 23 ° C. A hard polymer cement composition was applied to a thickness of about 0.2 mm with a roller brush (Wo Roller hair length: 10 to 15 mm, manufactured by Otsuka Brush Co., Ltd.) and cured for 7 days. Steel with a height of 1 m to 1 kg in the center. The sphere was dropped seven times, and those having no abnormalities such as cracks and peeling in the coating film were evaluated as “good”, and those having abnormalities such as cracking and peeling were evaluated as “x”.
また、２３℃下でＪＩＳＡ５３７１の３００ｍｍ×３００ｍｍ×厚さ６０ｍｍの乾燥したコンクリート平板（ケット水分計ＨＩ−５２０コンクリートレンジにて表示値５％以下）の表面に、均一に混合したポリオール、ポリイソシアネート、セメント、骨材及び水から成る下地用水硬性ポリマーセメント組成物 アイカピュールＪＪ−５００（商品名、アイカ工業株式会社製、骨材含有率：７５重量％、セメント含有率：７．５重量％）を厚さ約６ｍｍに塗付し７日間養生硬化後、均一に混合した実施例、比較例の水硬性ポリマーセメント組成物を厚さ約０．２ｍｍにローラ刷毛（ウーローラー毛丈１０〜１５ｍｍ、大塚刷毛社製）にて塗付して７日間養生し、中央部に高さ１ｍから１ｋｇの鋼球を３０回落下させ、塗膜に割れ、剥がれ等の異常のないものを○、割れ、剥がれ等の異常が生じたものを×と評価した。 In addition, a polyol, polyisocyanate, uniformly mixed on the surface of a dried concrete flat plate of 300 mm x 300 mm x 60 mm thick (indicated value of 5% or less on a Ket moisture meter HI-520 concrete range) of JIS A5371 at 23 ° C Hydraulic polymer cement composition for groundwork consisting of cement, aggregate and water Aikapur JJ-500 (trade name, manufactured by Aika Industry Co., Ltd., aggregate content: 75 wt%, cement content: 7.5 wt%) After applying and curing to a thickness of about 6 mm, curing for 7 days, and uniformly mixing the hydraulic polymer cement compositions of Examples and Comparative Examples to a thickness of about 0.2 mm, a roller brush (Wo Roller hair length of 10 to 15 mm, Otsuka And brushed for 7 days, dropped a steel ball with a height of 1m to 1kg 30 times in the center, and cracked, peeled off, etc. ○ those that do not, cracks were evaluated as × those abnormalities such as peeling occurs.
［耐熱衝撃性］
ＪＩＳＡ５３７１の３００ｍｍ×３００ｍｍ×厚さ６０ｍｍの乾燥したコンクリート平板（ケット水分計ＨＩ−５２０コンクリートレンジにて５％以下）を４分の１にカットして１５０ｍｍ×１５０ｍｍ×厚さ６０ｍｍの試験板とし、該試験板の表面に均一に混合した実施例、比較例の水硬性ポリマーセメント組成物を厚さ約０．２ｍｍにローラ刷毛（ウーローラー毛丈１０〜１５ｍｍ、大塚刷毛社製）にて塗付して７日間養生する。その後試験体中央部に９５℃熱水を５分流下させ次に２０℃の冷水を１０分流下させることを１サイクルとして１２００サイクル繰り返し、塗膜に剥がれ、浮き等異常が生じないものを○、異常が生じたものを×と評価した。
[Thermal shock resistance]
A 150 mm × 150 mm × 60 mm thick test plate was cut into a quarter of a dried concrete flat plate of 300 mm × 300 mm × 60 mm thick (5% or less with a ket moisture meter HI-520 concrete range) of JIS A5371, The hydraulic polymer cement compositions of Examples and Comparative Examples mixed uniformly on the surface of the test plate were applied to a thickness of about 0.2 mm with a roller brush (Wo Roller hair length of 10 to 15 mm, manufactured by Otsuka Brush Co., Ltd.). And heal for 7 days. Then, 95 ° C hot water was allowed to flow down to the center of the test body for 5 minutes, and then 20 ° C cold water was allowed to flow for 10 minutes. An abnormality was evaluated as x.
また、ＪＩＳＡ５３７１の３００ｍｍ×３００ｍｍ×厚さ６０ｍｍの乾燥したコンクリート平板（ケット水分計ＨＩ−５２０コンクリートレンジにて５％以下）を４分の１にカットして１５０ｍｍ×１５０ｍｍ×厚さ６０ｍｍの試験板とし、該の試験板の表面であって４面の木口より５ｍｍ内側に深さ１０ｍｍ幅１０ｍｍの目地部を設ける。２３℃下において該目地部に、均一に混合したポリオール、ポリイソシアネート、セメント、骨材及び水から成る下地用水硬性ポリマーセメント組成物 アイカピュールＪＪ−５００（商品名、アイカ工業株式会社製、骨材含有率：７５重量％、セメント含有率：７．５重量％）を充填しながら、厚さ約６ｍｍに塗付し７日間養生硬化後、均一に混合した実施例、比較例の水硬性ポリマーセメント組成物を厚さ約０．２ｍｍにローラ刷毛（ウーローラー毛丈１０〜１５ｍｍ、大塚刷毛社製）にて塗付して７日間養生する。その後試験体中央部に９５℃熱水を５分流下させ次に２０℃の冷水を１０分流下させることを１サイクルとして１５００サイクル繰り返し、塗膜に剥がれ、浮き等異常が生じないものを○、異常が生じたものを×と評価した。 Also, a 150 mm x 150 mm x 60 mm thick test plate was cut into a quarter of a dried concrete flat plate of 300 mm x 300 mm x 60 mm thick (5% or less with a ket moisture meter HI-520 concrete range). In addition, a joint portion having a depth of 10 mm and a width of 10 mm is provided on the surface of the test plate and 5 mm inward from the four mouthpieces. Underground hydraulic polymer cement composition consisting of polyol, polyisocyanate, cement, aggregate and water uniformly mixed at the joint at 23 ° C. Aikapur JJ-500 (trade name, manufactured by Aika Kogyo Co., Ltd., aggregate Hydraulic polymer cements of Examples and Comparative Examples, which were applied to a thickness of about 6 mm, cured and cured for 7 days, and then mixed evenly while filling with a content of 75% by weight and cement content of 7.5% by weight. The composition is applied to a thickness of about 0.2 mm with a roller brush (Wo Roller hair length: 10 to 15 mm, manufactured by Otsuka Brush Co., Ltd.) and cured for 7 days. Thereafter, 95 ° C hot water is allowed to flow down to the center of the test body for 5 minutes, and then 20 ° C cold water is allowed to flow down for 10 minutes. An abnormality was evaluated as x.
［付着性］
２３℃下でＪＩＳＡ５３７１の３００ｍｍ×３００ｍｍ×厚さ６０ｍｍの乾燥したコンクリート平板（ケット水分計ＨＩ−５２０コンクリートレンジにて５％以下）の表面に、均一に混合した実施例、比較例の水硬性ポリマーセメント組成物を厚さ約０．２ｍｍにローラ刷毛（ウーローラー毛丈１０〜１５ｍｍ、大塚刷毛社製）にて塗付して７日間養生し、建研式接着力試験器により、４０×４０ｍｍ部分の水硬性ポリマーセメント組成物とコンクリート平板との付着強度（Ｎ／ｍｍ２）を測定した。破壊状態は下地コンクリート１００％凝集破壊を○と、それ以外を×と評価した。
[Adhesiveness]
Hydraulic polymer of Examples and Comparative Examples mixed uniformly on the surface of a dried concrete flat plate of 300 mm x 300 mm x 60 mm thick (5% or less in the Ket Moisture Meter HI-520 Concrete Range) at 23 ° C. The cement composition was applied to a thickness of about 0.2 mm with a roller brush (Wo Roller hair length: 10 to 15 mm, manufactured by Otsuka Brush Co., Ltd.), cured for 7 days, and 40 × 40 mm using a Kenken-type adhesive strength tester. The adhesion strength (N / mm 2 ) between the hydraulic polymer cement composition of the part and the concrete flat plate was measured. As for the fracture state, 100% cohesive fracture of the ground concrete was evaluated as “good”, and the others were evaluated as “poor”.
［ローラ刷毛作業性］
５℃、２３℃、及び３０℃にて実施例及び比較例の水硬性ポリマーセメント組成物の混合物（混合直後）を、ローラ刷毛（ウーローラー毛丈１０〜１５ｍｍ、大塚刷毛社製）にてＪＩＳＡ５３７１の３００ｍｍ×３００ｍｍ×厚さ６０ｍｍの乾燥したコンクリート平板（ケット水分計ＨＩ−５２０コンクリートレンジにて５％以下）上に厚さ約０．２ｍｍに塗付し、全ての温度下において該ローラ刷毛にてスムーズに塗り拡げることができるものを○、そうでないものを×と評価した。
[Roller brush workability]
The mixture of the hydraulic polymer cement compositions of Examples and Comparative Examples (immediately after mixing) at 5 ° C., 23 ° C., and 30 ° C. was rolled with a roller brush (Wo Roller Hair Length 10-15 mm, manufactured by Otsuka Brush Co., Ltd.) in accordance with JIS A5371. 300 mm x 300 mm x 60 mm thick dry concrete flat plate (5% or less with a ket moisture meter HI-520 concrete range) to a thickness of about 0.2 mm, and the roller brush under all temperatures And those that can be spread smoothly are evaluated as ◯, and those that are not so are evaluated as ×.
［塗膜平滑性］
５℃、２３℃、及び３０℃にて実施例及び比較例の水硬性ポリマーセメント組成物の混合物（混合直後）を、ローラ刷毛（ウーローラー毛丈１０〜１５ｍｍ、大塚刷毛社製）にてＪＩＳＡ５３７１の３００ｍｍ×３００ｍｍ×厚さ６０ｍｍの乾燥したコンクリート平板（ケット水分計ＨＩ−５２０コンクリートレンジにて５％以下）上に塗付し、全ての温度下において均一な塗膜となるものを○と、そうでないものを×と評価した。
[Coating smoothness]
The mixture of the hydraulic polymer cement compositions of Examples and Comparative Examples (immediately after mixing) at 5 ° C., 23 ° C., and 30 ° C. was rolled with a roller brush (Wo Roller Hair Length 10-15 mm, manufactured by Otsuka Brush Co., Ltd.) in accordance with JIS A5371. Of 300 mm × 300 mm × 60 mm thick dry concrete flat plate (5% or less with a ket moisture meter HI-520 concrete range), and a uniform coating film under all temperatures, Those that were not rated as x.
［可使時間］
２３℃にて実施例及び比較例の水硬性ポリマーセメント組成物の混合物（混合直後）を、ローラ刷毛（ウーローラー毛丈１０〜１５ｍｍ、大塚刷毛社製）にてＪＩＳＡ５３７１の３００ｍｍ×３００ｍｍ×厚さ６０ｍｍの乾燥したコンクリート平板（ケット水分計ＨＩ−５２０コンクリートレンジにて５％以下）上に厚さ約０．２ｍｍに塗付し、該ローラ刷毛にてスムーズに塗り拡げることができる時間を測定した。１５分以上を○、そうでないものを×と評価した。
[Pot life]
The mixture of the hydraulic polymer cement compositions of Examples and Comparative Examples (immediately after mixing) at 23 ° C. was rolled into a roller brush (Wo Roller hair length: 10 to 15 mm, manufactured by Otsuka Brush Co., Ltd.), 300 mm × 300 mm × thickness of JIS A5371. It was applied to a dry concrete flat plate of 60 mm (5% or less with a ket moisture meter HI-520 concrete range) to a thickness of about 0.2 mm, and the time required for smooth spreading with the roller brush was measured. . A value of 15 minutes or more was evaluated as ◯, and a value other than that was evaluated as ×.
［防カビ性］
２３℃下にて７日養生後の実施例、比較例の水硬性ポリマーセメント組成物の硬化物について、９５℃熱水を５分流下させ次に２０℃の冷水を１０分流下させることを１サイクルとした熱衝撃を１００回と２５０回加え、その後の試験体について、ＪＩＳ Ｚ ２９１１ かび抵抗性試験方法（プラスチック製品の試験（方法Ａ：乾式法）に準じ、シャーレ中の試験体（５ｃｍ×５ｃｍ）上に試験かび混合胞子を付着乾燥させた磁器素焼き板を置き、ガラス板を載せ蓋をする。２６±２℃で４週間培養し、菌糸の発育の様子を観察し、以下によって評価した。Ａ法培地は無機塩寒天培地であり、試験菌はＡｓｐｅｒｇｉｌｌｕｓ ｎｉｇｅｒ、Ｐｅｎｉｃｉｌｌｉｕｍ ｐｉｎｏｐｈｉｌｕｍ、Ｐａｅｃｉｌｏｍｙｃｅｓ ｖａｒｉｏｔｉｉ、Ｔｒｉｃｈｏｄｅｒｍａ ｖｉｒｅｎｓ、及びＣｈａｅｔｏｍｉｕｍ ｇｌｏｂｏｓｕｍである。
０：肉眼及び顕微鏡下でかびの発育は認められない。
１：肉眼でかびの発育が認められ、顕微鏡下では明らかに確認できる。
２：肉眼でかびの発育が認められ、発育部分の面積は試料の全面積の２５％未満。
３：肉眼でかびの発育が認められ、発育部分の面積は試料の全面積の２５％以上〜５０％未満。
４：菌糸はよく発育し、発育部分の面積は全面積の５０％以上。
５：菌糸の発育は激しく、試料全面を覆っている。
[Anti-mold]
For the cured products of the hydraulic polymer cement compositions of Examples and Comparative Examples after curing for 7 days at 23 ° C., 95 ° C. hot water is allowed to flow for 5 minutes, and then 20 ° C. cold water is allowed to flow for 10 minutes. Cycle thermal shock was applied 100 times and 250 times, and the test specimens thereafter were tested in a petri dish (5 cm × 5 mm) according to the JIS Z 2911 Mold Resistance Test Method (Plastic Product Test (Method A: Dry Method)). Place a porcelain baking sheet with test mold mixed spores attached and dried on 5 cm), put a glass plate and cover it, and incubate at 26 ± 2 ° C. for 4 weeks, observe the growth of mycelia and evaluate by the following: Method A medium is an inorganic salt agar medium, and test bacteria are Aspergillus niger, Penicillium pinophilum, Paecilomyces variotiii, Tric. Hoderma virens and Chaetomium globosum.
0: No mold growth was observed with the naked eye or under a microscope.
1: The growth of mold was observed with the naked eye and can be clearly confirmed under a microscope.
2: Mold growth was observed with the naked eye, and the area of the growth part was less than 25% of the total area of the sample.
3: Growth of mold was observed with the naked eye, and the area of the growth part was 25% to less than 50% of the total area of the sample.
4: Mycelium grows well, and the area of the growth part is 50% or more of the total area.
5: Mycelium grows vigorously and covers the entire sample surface.
［評価結果］
評価結果を表１に示す。
[Evaluation results]
The evaluation results are shown in Table 1.
Claims (3)
The hydraulic polymer cement composition according to claim 1 or 2, wherein the polyisocyanate is polymethyl polyphenyl polyisocyanate.
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| JP2004300010A (en) * | 2003-04-01 | 2004-10-28 | Kao Corp | Polymer concrete composition |
| JP2016017024A (en) * | 2014-07-11 | 2016-02-01 | アイカ工業株式会社 | Aqueous polyurethane composition and method for applying the same on floor substrate concrete |
| JP2016196400A (en) * | 2015-04-02 | 2016-11-24 | アイカ工業株式会社 | Polyurethane-based cement composition, and concrete floor construction method thereof |
| JP2017039623A (en) * | 2015-08-20 | 2017-02-23 | アイカ工業株式会社 | Hydraulic setting polymer cement composition |
| JP2017065942A (en) * | 2015-09-28 | 2017-04-06 | アイカ工業株式会社 | Hydraulic polymer cement composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004300010A (en) * | 2003-04-01 | 2004-10-28 | Kao Corp | Polymer concrete composition |
| JP2016017024A (en) * | 2014-07-11 | 2016-02-01 | アイカ工業株式会社 | Aqueous polyurethane composition and method for applying the same on floor substrate concrete |
| JP2016196400A (en) * | 2015-04-02 | 2016-11-24 | アイカ工業株式会社 | Polyurethane-based cement composition, and concrete floor construction method thereof |
| JP2017039623A (en) * | 2015-08-20 | 2017-02-23 | アイカ工業株式会社 | Hydraulic setting polymer cement composition |
| JP2017065942A (en) * | 2015-09-28 | 2017-04-06 | アイカ工業株式会社 | Hydraulic polymer cement composition |
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