JP2019059644A - 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 applied directly on the foundation concrete of a food factory floor which is frequently cleaned 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 of a hydraulic polymer cement composition comprising a polyol, a polyisocyanate, cement, aggregate and water, and optionally a diluent, in particular The present invention relates to a hydraulic polymer cement composition which can be applied by roller brushing and is excellent in thermal shock resistance due to 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, polyester polyol and polyphenyl polymethyl polyisocyanate having a molecular weight of 1000 to 3000 and having hydroxyl groups at both ends and having a side chain, and hydraulic cement A resin cement composition has been proposed which is characterized in that it is blended with an aggregate containing the following (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, mixing work at the construction site is easy to perform, and unevenness in workability, performance, and finish appearance is unlikely to occur, and it is used for construction of floors where heat resistance, heat resistance, water resistance, abrasion resistance, impact resistance, etc. are required. As a polyurethane-based cement composition to be prepared, it is coated on a substrate which is a concrete comprising a polyol containing at least a water-dispersed polyol, a hydrophobic isocyanate which is polyphenylene polymethylpolyisocyanate, and an aggregate which contains a hydraulic cement. It is a composition cured with a thickness of 4 mm, and it has a thickness of 4 mm and a contraction stress of 4.0 ± 2.0 N / 2000 after 2000 cycles with curing of hot water at 95 ° C. for 5 minutes and 20 ° C. for 10 minutes as one cycle. A polyurethane-based cement composition having a size of 2 mm and being free from warping and surface cracks 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 described in Patent Document 1 and the polyurethane-based cement composition of Patent Document 2 are directly applied to a floor foundation concrete such as a food factory to a thickness of about 2 to 9 mm and cured. Since it is necessary to use as a coated floor that is frequently cleaned by water, and it is necessary to spread with a fixed thickness of 2 to 9 mm with a mallet (wood mallet or hammer) at the time of construction, There is a problem that only limited craftsmen with the skills to handle
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 due to use, or when stains or the like occur, or when the entire floor is repaired, heat resistance, Since hot water resistance, impact resistance, etc. are required, the paint film should be removed once to reach the base concrete, and then a resin cement composition or a polyurethane cement composition should be applied again with a constant thickness of 2 to 9 mm. There is a problem that it 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 problems to be solved by the present invention can be applied with roller brushes that can be handled by anyone and can be directly applied to the underlying concrete or with existing polyols, polyisocyanates, cements, aggregates and water, and if necessary, diluents. It can be further coated on the cured coating film of the hydraulic polymer cement composition containing it, and further, it is excellent in thermal shock resistance due to repeated flowing of hot water and cold water, and has abrasion resistance, impact resistance, etc. It is an object of the present invention 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、骨材は球状有機微粒子と水酸化アルミニウムと硅砂とから成り、球状有機微粒子は組成物全体１００重量部中の１０〜１５重量部であり、水酸化アルミニウムは組成物全体１００重量部中の１〜４重量部であり、硅砂は組成物全体１００重量部中の０．５〜２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 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. 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 equivalent of 150 to 320, The castor oil-based 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 relative to one hydroxyl group is 6.0 to 7.0. The aggregate is composed of spherical organic particles, aluminum hydroxide and borax, and spherical organic particles are 10 to 15 parts by weight in 100 parts by weight of the whole composition, 1 to 4 parts by weight of aluminum hydroxide in 100 parts by weight of the whole composition, 0.5 to 0.5 parts in 100 parts by weight of the whole composition The hydraulic polymer cement composition is 2 parts by weight, the cement is 25 to 35 parts by weight in 100 parts by weight of the whole composition, and the diluent contains an alkylsulfonic acid ester compound.
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 flowing of hot water and cold water, has abrasion resistance, and has an impact resistance not to be peeled off even when a heavy object falls. There is. In addition, it is applied on a cured coating of a hydraulic polymer cement composition comprising base concrete or already existing polyol, polyisocyanate, cement, aggregate, water and, if necessary, a diluent, which is already contained. There is a sufficient time to do it, and the workability at that time is also good because it has a low viscosity, and there is an effect that it can be easily applied by roller brushing.
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 the effect of maintaining mildew resistance over a long period even when hot water cleaning is carried out as in a food factory floor, and it can be used as a food factory floor It has the effect of being 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、骨材は球状有機微粒子と水酸化アルミニウムと硅砂とから成り、球状有機微粒子は組成物全体１００重量部中の１０〜１５重量部であり、水酸化アルミニウムは組成物全体１００重量部中の１〜４重量部であり、硅砂は組成物全体１００重量部中の０．５〜２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 equivalent of 150 to 320, and a 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 one hydroxyl group is 6.0 to 7.0, and bone The material consists of spherical organic particles, aluminum hydroxide and borax, and the spherical organic particles have a composition 10 to 15 parts by weight in 100 parts by weight of the body, 1 to 4 parts by weight of aluminum hydroxide in 100 parts by weight of the whole composition, 0.5 to 2 parts in 100 parts by weight of the whole borax The hydraulic polymer cement composition according to claim 1, wherein the cement is 25 to 35 parts by weight in 100 parts by weight of the whole composition, and the diluent contains an alkylsulfonic acid ester compound. In addition to these, additives such as pigments, dispersants and antifoaming agents can be blended.
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 is composed of 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 It consists of 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-opened polyol obtained by reacting a polyepoxy compound having a bisphenol A skeleton with an active hydrogen compound, and the hydroxyl equivalent is preferably 250 to 450. When the hydroxyl equivalent is less than 250, the curing as the aqueous polyurethane composition becomes fast and the workability becomes poor, and when it exceeds 450, the strength after curing as the aqueous polyurethane composition becomes insufficient. The 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 less than 0.5 parts by weight, the strength of the cured product of the composition may be reduced. If it exceeds 3 parts by weight, the workability at the time of applying the composition with a roller brush may decrease.
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-based bifunctional polyol is a bifunctional polyol obtained by processing castor oil, and its hydroxyl equivalent is preferably 150 to 320. If it is less than 150, hardening may be quick and workability may be poor. If it is more than 320, the strength of the hydraulic polymer cement composition after hardening may be insufficient. 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 less than 1 part by weight, the strength of the cured product of the composition decreases and if more than 3 parts by weight Workability at the time of applying with brush decreases.
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 is a polyol having 3 hydroxyl groups. The hydroxyl equivalent of the castor oil-based trifunctional polyol used in the present invention is preferably 250 to 450. If it is less than 250, the curing as the aqueous polyurethane composition becomes fast and the workability becomes poor, and if it exceeds 450, the hydraulic polymer cement composition As a product, the strength after curing becomes insufficient. The blending 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 less than 4 parts by weight, the strength of the cured product of the composition decreases and if more than 10 parts by weight Workability at the time of applying with brush decreases.
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, and also has high curing ability at low temperature and high strength after curing, so that it is a polymer comprising 4,4'-diphenylmethane diisocyanate. It is preferred to use MDI (polymethyl polyphenyl polyisocyanate) and the NCO equivalent is preferably 100-150. If the NCO equivalent is less than 100, the cured product may swell due to foaming or the like, and the finish may be poor. If the NCO equivalent is more than 150, the strength after curing may be insufficient. Of course, other aliphatic polyisocyanates, aromatic polyisocyanates, alicyclic polyisocyanates and the like can also be used, and can 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, and if less than 20 parts by weight, the strength of the cured product of the composition is reduced, and if it exceeds 40 parts by weight, the cured product causes swelling due to foaming. The finish will be poor at etc.
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 per one hydroxyl group of the polyol is preferably 6.0 to 7.0. If the number is less than 6.0, the thermal shock resistance decreases, and if it exceeds 7.0, the working life becomes short and coating workability is It becomes bad.
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 alkylsulfonic acid ester compound, and the composition has a low viscosity and can be easily applied on a base concrete or an existing coating by roller brushing. . The alkyl sulfonic acid ester compound is a non-phthalic acid plasticizer, and as a commercial product, Mezamol (trade name, 100% alkyl sulfonic acid ester compound, manufactured by Bayer) is available. The compounding amount of the alkylsulfonic acid ester compound is preferably 4 to 10 parts by weight in 100 parts by weight of the whole composition, and if less than 4 parts by weight, workability at the time of applying the composition with a roller brush is reduced, 10 parts by weight If it is too high, the strength of the cured product of the composition decreases.
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 antifungal agent comprising a benzimidazole compound used in the hydraulic polymer cement composition of the present invention is subjected to hot water cleaning because it has high heat stability and pH stability, and contains cement as a composition It is used as a fungicide suitable for the present hydraulic polymer cement composition. As a commercial product, there is Courtside D2 (trade name, manufactured by Nippon Envirochemicals Co., Ltd.) as a 10% water suspension. The compounding amount of the fungicide comprising the benzimidazole compound is preferably 0.6 to 4.0 parts by weight with respect to 100 parts by weight of the whole composition. If the amount is less than 0.6 parts by weight, the antifungal 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 mainly intended to apply a water-based polyurethane composition of the present invention to floor base concrete to impart an aesthetic appearance, so that a specific color tone can be imparted, 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 is more than 35 parts by weight, the workability at the time of applying the composition 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、球状有機微粒子と水酸化アルミニウムと硅砂から成る。骨材のかさ比重は０．５〜１．０が好ましく、０．５未満ではローラ刷毛塗布作業が不良となり、１．０超では塗膜平滑性が不良となる。 The aggregate used in the hydraulic polymer cement composition of the present invention comprises spherical organic fine particles, aluminum hydroxide and borax for the purpose of enabling the composition to be applied by roller brushing. The bulk specific gravity of the aggregate is preferably 0.5 to 1.0, and if it is less than 0.5, the roller brush coating operation becomes poor, and if it exceeds 1.0, the coating film smoothness becomes poor.
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としての球状有機微粒子には、アクリル微粒子、スチレン微粒子、ナイロン微粒子、ウレタン微粒子等を使用することができ、特には塗膜の強靭性及びコストの面でアクリル微粒子が好ましい。球状有機微粒子の粒子径は１０μｍ〜３０μｍが好ましく、１０μｍ未満では光沢ムラによる仕上がり不良となり、３０μｍ超では塗膜平滑性が不良となる。球状有機微粒子を配合することにより表面仕上がり性と耐熱衝撃性が良好となる。球状有機微粒子の配合部数は組成物全体１００重量部中１０〜１５重量部が好ましく、１０重量部未満では塗膜平滑性が不良となり、１５重量部超では耐熱衝撃性が低下する。 Acrylic fine particles, styrene fine particles, nylon fine particles, urethane fine particles and the like can be used as spherical organic fine particles as an aggregate used in the hydraulic polymer cement composition of the present invention, and in particular, the toughness and cost of the coating film Acrylic particles are preferred in terms of The particle diameter of the spherical organic fine particles is preferably 10 μm to 30 μm. If it is less than 10 μm, the finish is poor due to uneven gloss, and if it exceeds 30 μm, the smoothness of the coating is poor. By blending the spherical organic fine particles, the surface finish and the thermal shock resistance become good. The amount of the spherical organic fine particles is preferably 10 to 15 parts by weight based on 100 parts by weight of the composition. If less than 10 parts by weight, the smoothness of the coated film becomes poor, and if more than 15 parts by weight, the thermal shock resistance decreases.
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としての水酸化アルミニウムは、耐熱衝撃性を確保し且つ組成物のローラ刷毛作業性を良好とすることを目的として配合する。また水酸化アルミニウムの平均粒子径Ｄ５０は５μｍ〜３０μｍが好ましく、５μｍ未満ではローラ刷毛作業性が低下し、３０μｍ超では塗膜平滑性が不良となる。ここで言う平均粒子径Ｄ５０とは、重量による積算分率が５０％の粒子径を言う。水酸化アルミニウムの配合部数は組成物全体１００重量部中１〜４重量部が好ましく１重量部未満では耐熱衝撃性が低下すると共に下地の隠蔽性が不良となる。４重量部超ではローラ刷毛作業性が低下する。 Aluminum hydroxide as an aggregate used for the hydraulic polymer cement composition of the present invention is blended for the purpose of securing the thermal shock resistance and making the roller brushing workability of the composition good. The average particle diameter D 50 of aluminum hydroxide is preferably 5 m to 30 m, is less than 5μm and lowered roller brush workability, coating smoothness becomes poor at 30μm greater. The average particle diameter D 50 referred to herein means a particle diameter having an integrated fraction by weight of 50%. The amount of aluminum hydroxide is preferably 1 to 4 parts by weight in 100 parts by weight of the whole composition, and if less than 1 part by weight, the thermal shock resistance is lowered and the hiding power of the base is poor. When it is more than 4 parts by weight, roller brushing workability decreases.
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としての硅砂は、塗膜平滑性を良好とすることを目的として配合する。硅砂の粒子径は０．０５ｍｍ〜０．２ｍｍが好ましく、０．０５ｍｍ未満ではセメント粒子の凝集が生じ、０．２ｍｍ超では塗膜平滑性が不十分となる。硅砂の配合部数は組成物全体１００重量部中１〜４重量部が好ましく１重量部未満では耐熱衝撃性が低下すると共にセメント粒子が凝集し、４重量部超ではローラ刷毛作業性が低下する。 The borax as an aggregate used for the hydraulic polymer cement composition of this invention is mix | blended for the purpose of making a coating film favorable. The particle diameter of borax is preferably 0.05 mm to 0.2 mm. If the particle diameter is less than 0.05 mm, aggregation of cement particles occurs, and if it exceeds 0.2 mm, the smoothness of the coating film becomes insufficient. The content of the borax is preferably 1 to 4 parts by weight in 100 parts by weight of the whole composition, and if less than 1 part by weight, the thermal shock resistance is lowered and the cement particles are aggregated, and if it exceeds 4 parts by weight, the roller brushing workability is lowered.
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、本発明の水硬性ポリマーセメント組成物は、骨材に上記球状有機微粒子と水酸化アルミニウムと硅砂を使用する。 The hydraulic polymer cement composition of the present invention is a roller brush and is formed on a base concrete or a base concrete in a thickness of about 2 to 9 mm, and is diluted with a polyol, polyisocyanate, cement, aggregate and water, and if necessary. The composition is further applied onto a cured coating of a hydraulic polymer cement composition comprising the agent. The roller brush preferably has a hair height of 10 to 15 mm, a coating thickness of 0.1 to 0.2 mm, and a coating amount of 0.2 to 0.4 kg / m 2 . In order to obtain such workability (roller brushing workability), the hydraulic polymer cement composition of the present invention uses the above-mentioned spherical organic fine particles, aluminum hydroxide and borax as the aggregate.
以下、実施例及び比較例にて具体的に説明する。 Hereinafter, the present invention will be specifically described in Examples and Comparative Examples.
＜実施例及び比較例＞
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、セメントとして白色ポルトランドセメント（太平洋セメント社製）を使用し、骨材として球状有機微粒子としてガンツパールＧＭ２００１（ポリアクリル酸エステル樹脂の球状微粒子、粒径２０μｍ、アイカ工業社製）を使用し、同水酸化アルミニウムとして、ハイジライトＨ−３２（平均粒子径Ｄ５０：８μｍ、昭和電工社製）を使用し、同硅砂として粒径０．０５〜０．２ｍｍの東北硅砂８号を使用し、セメントと骨材の合計部数を１５０重量部として表１の配合にて、主剤部：硬化剤部：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及び比較例１乃至比比較例６の水硬性ポリマーセメント組成物とした。実施例１及び比較例１乃至比較例６の水酸基１個当たりのＮＣＯ基数は６．５である。
<Example and Comparative Example>
8 parts by weight of a castor oil-based bifunctional polyol having a hydroxyl equivalent of 160, 20 parts by weight of a castor oil-based trifunctional polyol having a hydroxyl equivalent of 350, and 4 parts by weight of a tetrafunctional polyol having a bisphenol A skeleton with a hydroxyl equivalent of 350 It contains a polyol, a diluent and water consisting of 22 parts by weight of mezamol as an ester compound, 6 parts by weight of dioctyl phthalate, 20 parts by weight of deionized water, and 20 parts by weight of colored toner (10 parts by weight of water, 10 parts by weight of pigment) 100 parts by weight of a main agent and lupranate MB-5S (trade name, manufactured by BASF INOAC polyurethane Co., NCO weight%: 31.4 to 32.6%) which is polymeric MDI (polymethylpolyphenyl polyisocyanate) as polyisocyanate 100 parts by weight of curing agent, white portola as cement Cement (manufactured by Pacific Cement Co., Ltd.), and Ganzpearl GM2001 (spherical particles of polyacrylate resin, particle size 20 μm, manufactured by Aika Kogyo Co., Ltd.) as spherical organic particles as aggregate, aluminum hydroxide , Heidilite H-32 (average particle diameter D 50 : 8 μm, manufactured by Showa Denko), using Tohoku Sesame No. 8 with a particle diameter of 0.05 to 0.2 mm as the same borax, using cement and aggregate Example 1 and Comparative Example 1 in which the main agent part: curing agent part: aggregate part is uniformly mixed at 100 parts by weight: 100 parts by weight: 150 parts by weight with the total number of parts being 150 parts by weight. It was set as the hydraulic polymer cement composition of ratio comparative example 6. The number of NCO groups per one hydroxyl group in Example 1 and Comparative Examples 1 to 6 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。 100 parts by weight of the main agent of Example 2 as a total of 100 parts by weight of 97 parts by weight of Example 1 mixed with 3 parts by weight of Coatside D2 (10% aqueous suspension) as a fungicide comprising a benzimidazole compound The water of Example 1 was uniformly mixed with 100 parts by weight of a main agent: hardening agent: aggregate part: 100 parts by weight: 150 parts by weight of a curing agent and an aggregate part as in Example 1 It was a hard polymer cement composition. The number of NCO groups per one 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、セメント及び骨材を実施例１と同様のものを使用し、セメントと骨材の合計部数を１５０重量部として表１の配合にて、主剤部：硬化剤部：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７の水硬性ポリマーセメント組成物とした。比較例７の水酸基１個当たりのＮＣＯ基数は７．９である。 28 parts by weight of castor oil-based trifunctional polyol having a hydroxyl equivalent of 160 and a hydroxyl equivalent of 350, 6 parts by weight of a tetrafunctional polyol having a bisphenol A skeleton having a hydroxyl equivalent of 350 and 25 parts by weight of mezamol as an alkylsulfonic acid ester compound Polyol consisting of 21 parts by weight of exchanged water and 20 parts by weight of colored toner (10 parts by weight of water, 10 parts by weight of pigment) 100 parts by weight of a main agent containing a diluent and water, and Polymeric MDI (polymethylpolyphenyl polyisocyanate) as polyisocyanate And 100 parts by weight of a curing agent, and the cement and aggregate are the same as in Example 1), which is Lupranate MB-5S (trade name, manufactured by BASF INOAC Polyurethane Co., Ltd., NCO weight%: 31.4 to 32.6%). And the total number of parts of cement and aggregate is 150 parts by weight. Table at 1 formulation, the main agent unit: curing agent portion: 100 parts by weight of aggregate portion: 100 parts by weight: was uniformly hydraulic polymer cement composition of Comparative Example 7 a mixture of 150 parts by weight. The number of NCO groups per one hydroxyl group in Comparative Example 7 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、セメント及び骨材を実施例１と同様のものを使用し、セメントと骨材の合計部数を１５０重量部として表１の配合にて、主剤部：硬化剤部：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７の水硬性ポリマーセメント組成物とした。比較例８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-based bifunctional polyol having a hydroxyl equivalent of 160, 15 parts by weight of a castor oil-based trifunctional polyol having a hydroxyl equivalent of 350, and 4 parts by weight of a tetrafunctional polyol having a bisphenol A skeleton with a hydroxyl equivalent of 350 It contains a polyol, a diluent and water consisting of 20 parts by weight of mezamol as an ester compound, 9 parts by weight of dioctyl phthalate, 19 parts by weight of deionized water, and 20 parts by weight of colored toner (10 parts by weight of water, 10 parts by weight of pigment) 100 parts by weight of a main agent and lupranate MB-5S (trade name, manufactured by BASF INOAC polyurethane Co., NCO weight%: 31.4 to 32.6%) which is polymeric MDI (polymethylpolyphenyl polyisocyanate) as polyisocyanate Implement cement and aggregate with 100 parts by weight of curing agent Main component part: Hardening agent part: 100 parts by weight of aggregate part: 100 parts by weight: 150 parts by weight using the same as 1 and using the total number of parts of cement and aggregate as 150 parts by weight in the composition of Table 1. The resulting mixture was uniformly mixed to obtain a hydraulic polymer cement composition of Comparative Example 7. The number of NCO groups per one hydroxyl group in Comparative Example 8 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、セメント及び骨材を実施例１と同様のものを使用し、セメントと骨材の合計部数を１５０重量部として表１の配合にて、主剤部：硬化剤部：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８の水硬性ポリマーセメント組成物とした。比較例８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-based bifunctional polyol having a hydroxyl equivalent of 160, 22 parts by weight of castor oil-based trifunctional polyol having a hydroxyl equivalent of 350, and 4.5 parts by weight of a tetrafunctional polyol having a bisphenol A skeleton with a hydroxyl equivalent of 350 Polyol and diluent consisting of 23 parts by weight of mezamol as a sulfonic acid ester compound, 4.5 parts by weight of dioctyl phthalate, 20 parts by weight of deionized water, and 20 parts by weight of colored toner (10 parts by weight of water, 10 parts by weight of pigment) Lupranate MB-5S (trade name, manufactured by BASF INOAC Polyurethane Co., Ltd., NCO weight%: 31.4 to 32), which is 100 parts by weight of a main agent containing water and water and polyisocyanate MDI (polymethylpolyphenyl polyisocyanate) as polyisocyanate. Cement and aggregate with 100% by weight of curing agent) Main component part: Hardening agent part: 100 parts by weight of aggregate part: 100 parts by weight: 150 parts by weight of cement and aggregate and 150 parts by weight of the total of parts of cement and aggregate are used. The hydraulic polymer cement composition of Comparative Example 8 was prepared by uniformly mixing parts by weight. The number of NCO groups per one hydroxyl group in Comparative Example 8 is 7.7.
＜評価項目及び評価方法＞ <Evaluation item and evaluation method>
＜骨材のかさ比重＞
実施例及び比較例の骨材（球状有機微粒子と水酸化アルミニウムと硅砂を均一に混合したもの）をＪＩＳＡ６９０４ 付属書３ 粉末物性の測定 ５．かさ比重、に準拠してかさ比重を測定した。
<Bulk specific gravity of aggregate>
JIS A 6904 Annex 3 Measurement of powder physical properties of aggregates of the Examples and Comparative Examples (uniformly mixed spherical organic fine particles, aluminum hydroxide and borax). Bulk specific gravity was measured according to bulk specific gravity.
＜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 value>
The viscosity (Pa · s) of the mixture (immediately after mixing) of the hydraulic polymer cement compositions of Examples and Comparative Examples was measured at 23 ° C. with a BM type viscometer (rotor No. 4, rotation number 60 rpm). Less than 2.0 Pa · s was ○, and 2.0 Pa · s or more was evaluated as x. Moreover, the viscosity of rotor No. 4 and 6 rpm was measured with the same BM type | mold viscosity meter, and the value which remove | divided the viscosity at 6 rpm by the viscosity at 60 rpm was made into the fluctuation value. As for the fluctuation value, 1.0 or more and less than 1.5 were evaluated as ○, and the others were evaluated as x.
＜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>
The cured products of the hydraulic polymer cement compositions of the examples and comparative examples after aging for 7 days at 23 ° C., in accordance with JIS K 7204 (Plastics-Wear test method with wear wheels), wear rings (CS-17) The amount of wear was measured at a load of 9.8 N and 1000 rotations. If it is 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>
The compressive strength (N / mm 2 ) of the cured products of the hydraulic polymer cement compositions of Examples and Comparative Examples after 7 days aging at 23 ° C. was measured according to JIS K 6911. The size of the test body was 13 mm × 13 mm × 25 mm. If the compressive strength is more than 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 resistance>
After hardening for 7 days at 23 ° C, it was further immersed in 85 ° C hot water for 7 days and slowly cooled to 23 ° C. The hardened products of the hydraulic polymer cement compositions of the examples and comparative examples were compressed in accordance with JIS K 6911. (N / mm 2 ) was measured. The size of the test body was 13 mm × 13 mm × 25 mm. The value of the obtained compressive strength was divided by the compressive strength after curing at 23 ° C. for 7 days to determine the retention (%). If the retention rate exceeds 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。
<Impact resistance>
Water of Example and Comparative Example uniformly mixed on the surface of a 300 mm × 300 mm × 60 mm thick dried concrete plate (not more than 5% indicated by a ket moisture meter HI-520 concrete range) of JIS A5371 at 23 ° C. The hard polymer cement composition is coated with a roller brush (Woo roller hair length 10 to 15 mm, manufactured by Otsuka Brush Co., Ltd.) to a thickness of about 0.2 mm and cured for 7 days. The ball was dropped seven times, and the coating film was evaluated as ○ when there was no abnormality such as cracking or peeling, and as x when the abnormality such as cracking or peeling occurred.
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。 Also, a polyol, polyisocyanate, uniformly mixed on the surface of a 300 mm × 300 mm × 60 mm thick dried concrete plate (5% or less of display value with a ket moisture meter HI-520 concrete range) at 23 ° C. according to JIS A5371. Hydraulic polymer cement composition for foundation consisting of cement, aggregate and water Aikapur JJ-500 (trade name, manufactured by Aika Kogyo Co., Ltd., aggregate content: 75% by weight, cement content: 7.5% by weight) The hydraulic polymer cement composition of Example and Comparative Example uniformly coated after being applied to a thickness of about 6 mm and cured for 7 days, is roller brushed to a thickness of about 0.2 mm (wool roller height 10 to 15 mm, Otsuka Apply with a brush) and cure for 7 days, and drop a steel ball 1 to 1 kg in height 30 times in the central part, and the coating film may crack or peel off ○ 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。
<Heat shock resistance>
Cut a 300 mm x 300 mm x 60 mm thick dried concrete plate (less than 5% with a Kett moisture meter HI-520 concrete range) of JISA5371 into quarters to make a 150 mm x 150 mm x 60 mm thick test plate, The hydraulic polymer cement compositions of Examples and Comparative Examples uniformly mixed on the surface of the test plate are coated to a thickness of about 0.2 mm with a roller brush (Woo roller height 10 to 15 mm, manufactured by Otsuka Brush Co., Ltd.) Then heal for 7 days. After that, repeat 5 cycles of hot water at 95 ° C in the center of the test body and then 10 cycles of cold water at 20 ° C for 1 cycle, and repeat this cycle for 1,200 cycles. Those in which an abnormality occurred were 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。 In addition, a 300 mm x 300 mm x 60 mm thick dried concrete plate (5% or less with a ket moisture meter HI-520 concrete range) of JIS A5371 is cut into quarters and a test plate of 150 mm x 150 mm x 60 mm thickness A joint portion of 10 mm in depth and 10 mm in width is provided on the surface of the test plate and 5 mm inward of the four-faced buttocks. Hydraulic polymer cement composition for foundations consisting of polyol, polyisocyanate, cement, aggregate and water uniformly mixed in the joint part at 23 ° C. IKapure JJ-500 (trade name, manufactured by Aika Kogyo Co., Ltd., aggregate Hydraulic polymer cement of the example and comparative example which is coated to a thickness of about 6 mm and filled uniformly after curing for 7 days while filling the content rate: 75% by weight, cement content rate: 7.5% by weight) The composition is applied to a thickness of about 0.2 mm with a roller brush (Woo roller length 10 to 15 mm, manufactured by Otsuka Brush Co., Ltd.) and aged for 7 days. After that, repeat 5 cycles of 95 ° C hot water at the center of the test body and then 10 cycles of cold water at 20 ° C for 1 cycle and repeat it for 1500 cycles. Those in which an abnormality occurred were 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 an example and a comparative example uniformly mixed on the surface of a 300 mm × 300 mm × 60 mm thick dried concrete plate (5% or less with a ket moisture meter HI-520 concrete range) at 23 ° C. according to JIS A5371 The cement composition is applied to a thickness of about 0.2 mm with a roller brush (Woo roller length 10 to 15 mm, manufactured by Otsuka Brush Co., Ltd.) and aged for 7 days, and 40 × 40 mm with a bond strength tester. The adhesion strength (N / mm 2 ) between the hydraulic polymer cement composition of the part and the concrete plate was measured. As for the state of destruction, the base concrete 100% cohesive failure was evaluated as ○, and the other was evaluated as x.
＜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 brushing workability>
The mixture (immediately after mixing) of the hydraulic polymer cement compositions of Examples and Comparative Examples at 5 ° C., 23 ° C., and 30 ° C. is treated with a roller brush (Woo roller 10-15 mm in height, manufactured by Otsuka Brush Co., Ltd.) JIS A5371 Apply a thickness of about 0.2 mm on a 300 mm x 300 mm x 60 mm thick dried concrete plate (5% or less with a ket moisture meter HI-520 concrete range) and apply to the roller brush under all temperatures And those that could be spread smoothly were evaluated as ○, and those that were not evaluated as x.
＜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）上に厚さ約０．２ｍｍ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 film smoothness>
The mixture (immediately after mixing) of the hydraulic polymer cement compositions of Examples and Comparative Examples at 5 ° C., 23 ° C., and 30 ° C. is treated with a roller brush (Woo roller 10-15 mm in height, manufactured by Otsuka Brush Co., Ltd.) JIS A5371 Apply a thickness of about 0.2 mm on 300 mm x 300 mm x 60 mm dried concrete slabs (less than 5% with a moisture meter HI-520 concrete range) and apply a uniform coating under all temperatures The thing which becomes and was evaluated as (circle) and the thing which is not so as x.
＜下地隠蔽性＞
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下地の透けがないものを○と、部分的に下地の透けがあうものを△と、それ以外を×と評価した。
<Background hiding property>
The mixture (immediately after mixing) of the hydraulic polymer cement compositions of Examples and Comparative Examples at 5 ° C., 23 ° C., and 30 ° C. is treated with a roller brush (Woo roller 10-15 mm in height, manufactured by Otsuka Brush Co., Ltd.) JIS A5371 Apply a thickness of about 0.2 mm on a 300 mm x 300 mm x 60 mm thick dried concrete plate (5% or less with a moisture meter HI-520 concrete range), and see through the substrate at all temperatures Those without the evaluation were evaluated as ○, those with partial transparency of the base were evaluated as Δ, and the others were evaluated as ×.
＜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。
<Empty time>
The mixture (immediately after mixing) of the hydraulic polymer cement composition of the example and the comparative example at 23 ° C. is 300 mm × 300 mm × Thickness of JISA5371 with roller brush (Woo roller height 10 to 15 mm, Otsuka brush company make) It was coated to a thickness of about 0.2 mm on a 60 mm dried concrete plate (5% or less with a ket moisture meter HI-520 concrete oven), and the time when it was possible to spread smoothly with the roller brush was measured . It was evaluated that ○ or more for 15 minutes or more and x for not.
＜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-moldability>
For the cured product of the hydraulic polymer cement composition of the example and the comparative example after aging for 7 days at 23 ° C., hot water of 95 ° C. for 5 minutes and then cold water of 20 ° C. for 10 minutes 1 100 cycles and 250 cycles of thermal shock was applied as a cycle, and the test specimens thereafter were tested in petri dishes according to JIS Z 2911 mold resistance test method (plastic product test (method A: dry method). Place the glass plate on top and place on a glass plate and cover for 4 weeks, observe the growth of mycelium, and evaluate it according to the following: Method A medium is a mineral salt agar medium, and the test bacteria are Aspergillus niger, Penicillium pinophilum, Paecilomyces variotii, Tric hoderma virens, and chaetomium globosum.
0: No mold growth observed with naked eye and under a microscope.
1: The growth of mold is observed with the naked eye and can be clearly confirmed under a microscope.
2: Mold growth is observed with the naked eye, and the area of the growth portion is less than 25% of the total area of the sample.
3: Mold growth was observed with the naked eye, and the area of the growth portion 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: Mycelial growth is intense and covers the entire surface of the sample.
＜評価結果＞
評価結果を表２に示す。
<Evaluation result>
The evaluation results are shown in Table 2.
Claims (3)
The hydraulic polymer cement composition according to claim 1 or 2, wherein the polyisocyanate is polymethylpolyphenyl polyisocyanate.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004067419A (en) * | 2002-08-02 | 2004-03-04 | Asahi Denka Kogyo Kk | Curing polymer cement composition |
| JP2016526058A (en) * | 2013-04-26 | 2016-09-01 | シーカ・テクノロジー・アーゲー | Cement-free or low-cement low dust generation hybrid flooring composition |
| JP2017137207A (en) * | 2016-02-03 | 2017-08-10 | アイカ工業株式会社 | Hydraulic setting polymer cement composition and floor structure using the same |
| JP2017155128A (en) * | 2016-03-01 | 2017-09-07 | アイカ工業株式会社 | Aqueous polyurethane composition and construction method to underfloor concrete |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004067419A (en) * | 2002-08-02 | 2004-03-04 | Asahi Denka Kogyo Kk | Curing polymer cement composition |
| JP2016526058A (en) * | 2013-04-26 | 2016-09-01 | シーカ・テクノロジー・アーゲー | Cement-free or low-cement low dust generation hybrid flooring composition |
| JP2017137207A (en) * | 2016-02-03 | 2017-08-10 | アイカ工業株式会社 | Hydraulic setting polymer cement composition and floor structure using the same |
| JP2017155128A (en) * | 2016-03-01 | 2017-09-07 | アイカ工業株式会社 | Aqueous polyurethane composition and construction method to underfloor concrete |
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