CN113234520A - 一种混凝土建筑钢模用脱模剂及其制备方法 - Google Patents
一种混凝土建筑钢模用脱模剂及其制备方法 Download PDFInfo
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Abstract
一种混凝土建筑钢模用脱模剂及其制备方法,该混凝土建筑钢模用脱模剂由以下原料制成:矿物油、液体石蜡、乳化剂、双酚A型环氧树脂、聚马来酸酐、磷酸锌、抗氧化剂、流变调节剂和水。其制备方法包括以下步骤:(1)将水、矿物油和乳化剂分散均匀,加入液体石蜡,不断搅拌,得基底液;(2)将步骤(1)所得的基底液进行升温,然后加入双酚A型环氧树脂进行搅拌,再加入聚马来酸酐和磷酸锌,进行反应,得反应液;(3)将步骤(2)所得的反应液进行降温,然后加入抗氧化剂和流变调节剂,进行搅拌,即得混凝土建筑钢模用脱模剂。本发明混凝土建筑钢模用脱模剂具有良好的稳定性,脱模效果好,抗腐蚀性强,生产成本低,其制备方法简单。
Description
技术领域
本发明涉及一种脱模剂及其制备方法,尤其涉及一种混凝土建筑钢模用脱模剂及其制备方法。
背景技术
混凝土脱模剂是一种喷涂或刷涂在模具的工作面,起到隔离作用,在拆模时能够使混凝土与模具顺利分开的材料。
随着经济的高速发展,对混凝土的需求越来越大。人们除了对混凝土的基本性能有要求之外,对其结构的表面也越来越重视。混凝土表面的气孔不仅仅影响其结构表面的美观,而且也会影响其强度与耐久性能。而混凝土脱模剂的质量与性能对混凝土构件表面的结构与外观质量具有直接影响。
目前,以预制构件为主体的装配式混凝土建筑正在蓬勃发展,预制构件成为影响整个工程质量的关键材料。而脱模剂是制备预制构件重要的材料,在预制构件生产过程中,脱模剂质量不好,会导致预制构件发生粘模、脏模、麻面等质量问题,影响预制构件的外观质量和使用安全。
现有脱模剂存在稳定性不好、脱模效果不佳、防水性较差、脱模后模板不易清理,容易腐蚀模板的问题。模板养护不友好,会缩短模板使用寿命,使施工效率受到影响,同时也增加了建设成本。
CN104152225A于2016年03月23日公开了一种环保型混凝土专用水性脱模剂及其制备方法,先将脂肪酸与C3-C5烷基醇进行反应制得脂肪酸烷基酯,随后将脂肪酸烷基酯与改性聚醚、乳化剂、隔离剂混合进行反应,再进行高速乳化并加入渗透剂、阻锈剂与稳定剂,混合均匀后即得到环保型混凝土专用水性脱模剂。该脱模剂脱模性能不好,粘附量高,制备方法复杂。
发明内容
本发明要解决的技术问题是,克服现有技术存在的上述缺陷,提供一种具有良好的稳定性,脱模效果好,抗腐蚀性强和防水性好的混凝土建筑钢模用脱模剂。
本发明进一步要解决的技术问题是,提供一种操作简便的混凝土建筑钢模用脱模剂的制备方法。
本发明解决其技术问题采用的技术方案是,一种混凝土建筑钢模用脱模剂,由以下原料制成:矿物油、液体石蜡、乳化剂、双酚A型环氧树脂、聚马来酸酐、磷酸锌、抗氧化剂、流变调节剂和水。
进一步,所述原料的重量份配比为:矿物油35~52份、液体石蜡3~8.5份、乳化剂9~16份、双酚A型环氧树脂4~11份、聚马来酸酐0.5~1.0份、磷酸锌0.3~0.7份、抗氧化剂0.5~1.0份、流变调节剂0.1~0.3份和水30~45份。
进一步,所述原料的重量份优选配比为:矿物油38~48份、液体石蜡4~7.5份、乳化剂10~15份、双酚A型环氧树脂5~10份、聚马来酸酐0.6~0.9份、磷酸锌0.4~0.7份、抗氧化剂0.6~0.9份、流变调节剂0.15~0.25份和水32~40份。
进一步,所述原料更优选的重量份配比为:矿物油40~45份、液体石蜡5~7份、乳化剂11~14份、双酚A型环氧树脂6~9份、聚马来酸酐0.7~0.9份、磷酸锌0.5~0.7份、抗氧化剂0.7~0.9份、流变调节剂0.15~0.20份和水34~38份。
进一步,所述矿物油为10#白油、15#白油和32#白油中的一种或几种。
进一步,所述乳化剂为十二烷基硫酸钠、Span-60(司盘60)、Tween-60(吐温60)和AEO9(脂肪醇聚氧乙烯醚)中的一种或几种。
进一步,所述抗氧化剂为丁基羟基茴香醚(BHA)、二丁基羟基甲苯(BHT)和叔丁基对苯二酚(TBHQ)中的一种或几种。
进一步,所述双酚A型环氧树脂为E-35型双酚A型环氧树脂、E-42型双酚A型环氧树脂和E-44型双酚A型环氧树脂中的一种或几种。双酚A型环氧树脂具有很高的透明度,粘度大,挂壁性好,不会影响混凝土试件的表观状态。
进一步,所述流变调节剂为聚乙烯醇、聚乙烯蜡和聚丙烯酰胺中的一种或几种。
本发明进一步解决其技术问题采用的技术方案是,一种混凝土建筑钢模用脱模剂的制备方法,包括以下步骤:
(1)将水、矿物油和乳化剂分散均匀,加入液体石蜡,不断搅拌,得基底液;
(2)将步骤(1)所得的基底液进行升温,然后加入双酚A型环氧树脂进行搅拌,再加入聚马来酸酐和磷酸锌,进行反应,得反应液;
(3)将步骤(2)所得的反应液进行降温,然后加入抗氧化剂和流变调节剂,进行搅拌,即得混凝土建筑钢模用脱模剂。
进一步,步骤(1)中,所述分散的温度为30~40℃。
进一步,步骤(2)中,所述搅拌的时间为30~60min。
进一步,步骤(2)中,所述升温为升温至70~80℃。
进一步,步骤(2)中,所述反应的时间为1~2h。
进一步,步骤(3)中,所述降温为降温至30~40℃;所述搅拌的时间为30~60min。
与现有技术相比,本发明具有以下有益效果:
(1)本发明通过添加聚马来酸酐和磷酸锌,将二者进行复配使用,不仅能使本发明混凝土建筑钢模用脱模剂具有较强的抗腐蚀作用,有利于保护钢模表面,延长钢模使用寿命,对脱模剂的粘度还具有良好的调节作用;
(2)本发明通过添加双酚A型环氧树脂和流变调节剂,利用二者之间的协同增强效果,使本发明混凝土建筑钢模用脱模剂具有良好的成膜性、粘着性和防水性,使预制构件表面更加光滑,有效减少表面水波纹;
(3)本发明混凝土建筑钢模用脱模剂稳定性良好,稀释24小时后不分层,常温存放稳定性≥12个月;
(4)本发明混凝土建筑钢模用脱模剂制备方法简单,工艺条件易控制,操作简便,易于工业生产。
具体实施方式
下面结合具体实施例对本发明作进一步说明。需要指出的是,这些实施例不得用于解释对本申请权利要求请求保护范围的限制。基于本发明这些实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他变更或修饰,都属于本申请权利要求的保护范围。
各实施例所用化学原料均为普通市售产品,均通过常规商业途径获得。
实施例1
本实施例混凝土建筑钢模用脱模剂,由以下重量份数的原料制成:15#白油43份、液体石蜡6份、十二烷基硫酸钠13份、E-35型双酚A型环氧树脂7.5份、聚马来酸酐0.75份、磷酸锌0.5份、二丁基羟基甲苯0.8份、聚乙烯醇0.2份和水36份。
本实施例混凝土建筑钢模用脱模剂的制备方法,包括以下步骤:
(1)将水、15#白油和十二烷基硫酸钠在40℃下分散均匀,加入液体石蜡,搅拌60min,得基底液;
(2)将步骤(1)所得的基底液升温至80℃,然后加入E-35型双酚A型环氧树脂进行搅拌,搅拌45min,再加入聚马来酸酐和磷酸锌,反应1.5小时,得反应液;
(3)将步骤(2)所得的反应液降温至40℃,然后加入二丁基羟基甲苯和聚乙烯醇,进行搅拌,搅拌60min,即得混凝土建筑钢模用脱模剂产品。
实施例2
本实施例混凝土建筑钢模用脱模剂,由以下重量份数的原料制成:10#白油40份、液体石蜡6.5份、Span-60 13份、E-42型双酚A型环氧树脂6.5份、聚马来酸酐0.7份、磷酸锌0.4份、丁基羟基茴香醚0.7份、聚异丁烯0.15份和水35份。
本实施例混凝土建筑钢模用脱模剂的制备方法,包括以下步骤:
(1)将水、10#白油和Span-60在35℃下分散均匀,加入液体石蜡,搅拌45min,得基底液;
(2)将步骤(1)所得的基底液升温至80℃,然后加入E-42型双酚A型环氧树脂进行搅拌,搅拌60min,再加入聚马来酸酐和磷酸锌,反应1.5小时,得反应液;
(3)将步骤(2)所得的反应液降温至35℃,然后加入丁基羟基茴香醚和聚异丁烯,进行搅拌,搅拌45min,即得混凝土建筑钢模用脱模剂产品。
实施例3
本实施例混凝土建筑钢模用脱模剂,由以下重量份数的原料制成:32#白油42份、液体石蜡7.5份、Tween-60 14份、E-44型双酚A型环氧树脂6份、聚马来酸酐0.6份、磷酸锌0.4份、叔丁基对苯二酚0.7份、聚丙烯酰胺0.2份和水36份。
本实施例混凝土建筑钢模用脱模剂的制备方法,包括以下步骤:
(1)将水、32#白油和Tween-60在30℃下分散均匀,加入液体石蜡,搅拌40min,得基底液;
(2)将步骤(1)所得的基底液升温至75℃,然后加入E-44型双酚A型环氧树脂进行搅拌,搅拌60min,再加入聚马来酸酐和磷酸锌,反应2小时,得反应液;
(3)将步骤(2)所得的反应液降温至30℃,然后加入叔丁基对苯二酚和聚丙烯酰胺,进行搅拌,搅拌50min,即得混凝土建筑钢模用脱模剂产品。
实施例4
本实施例混凝土建筑钢模用脱模剂,由以下重量份数的原料制成:32#白油45份、液体石蜡6.5份、AEO-9 14份、E-35型双酚A型环氧树脂6份、聚马来酸酐0.7份、磷酸锌0.5份、丁基羟基茴香醚0.7份、聚乙烯蜡0.15份和水36份。
本实施例混凝土建筑钢模用脱模剂的制备方法,包括以下步骤:
(1)将水、32#白油和AEO-9在35℃下分散均匀,加入液体石蜡,搅拌45min,得基底液;
(2)将步骤(1)所得的基底液升温至80℃,然后加入E-35型双酚A型环氧树脂进行搅拌,搅拌60min,再加入聚马来酸酐和磷酸锌,反应1.5小时,得反应液;
(3)将步骤(2)所得的反应液降温至35℃,然后加入丁基羟基茴香醚和聚乙烯蜡,进行搅拌,搅拌45min,即得混凝土建筑钢模用脱模剂产品。
实施例5
本实施例混凝土建筑钢模用脱模剂,由以下重量份数的原料制成:15#白油48份、液体石蜡5.5份、Span-60 14份、E-42型双酚A型环氧树脂6.5份、聚马来酸酐0.6份、磷酸锌0.5份、叔丁基对苯二酚0.6份、聚乙烯醇0.1份和水40份。
本实施例混凝土建筑钢模用脱模剂的制备方法,包括以下步骤:
(1)将水、15#白油和Span-60在30℃下分散均匀,加入液体石蜡,搅拌30min,得基底液;
(2)将步骤(1)所得的基底液升温至70℃,然后加入E-42型双酚A型环氧树脂进行搅拌,搅拌60min,再加入聚马来酸酐和磷酸锌,反应1.5小时,得反应液;
(3)将步骤(2)所得的反应液降温至30℃,然后加入叔丁基对苯二酚和聚乙烯醇,进行搅拌,搅拌45min,即得混凝土建筑钢模用脱模剂产品。
对比例1
对比例1脱模剂与实施例1脱模剂相比,区别在于,对比例1脱模剂没有使用聚马来酸酐、硫酸锌和E-35型双酚A型环氧树脂,其他原料及脱模剂的制备方法与实施例1相同。
对比例2
对比例2脱模剂与实施例1脱模剂相比,区别在于,对比例2脱模剂用双酚F型环氧树脂替代E-35型双酚A型环氧树脂,其他原料及脱模剂的制备方法与实施例1相同。
性能检测方法:按JC/T949-2005《混凝土制品用脱模剂》标准,检测实施例1~5混凝土建筑钢模用脱模剂产品和对比例1~2脱模剂的干燥时间、稳定性、脱模性能、抗腐蚀性能和防水性。检测结果见表1。
表1实施例1~5混凝土建筑钢模用脱模剂产品和对比例1~2脱模剂的性能检测结果
由表1可以看出,本发明实施例1~5混凝土建筑钢模用脱模剂产品在干燥时间,稳定性,脱模性能,抗腐蚀性能和防水性方面都满足标准JC/T949-2005《混凝土制品用脱模剂》的要求;特别是本发明实施例1~5混凝土建筑钢模用脱模剂产品的脱模性能明显优于该标准规定指标,也明显优于对比例1和对比例2脱模剂;同时,实施例1~5混凝土建筑钢模用脱模剂产品在抗腐蚀性能和防水性方面也明显优于对比例1和对比例2的脱模剂。
Claims (10)
1.一种混凝土建筑钢模用脱模剂,其特征在于,由以下原料制成:矿物油、液体石蜡、乳化剂、双酚A型环氧树脂、聚马来酸酐、磷酸锌、抗氧化剂、流变调节剂和水。
2.根据权利要求1所述的混凝土建筑钢模用脱模剂,其特征在于,所述原料的重量份配比为:矿物油35~52份、液体石蜡3~8.5份、乳化剂9~16份、双酚A型环氧树脂4~11份、聚马来酸酐0.5~1.0份、磷酸锌0.3~0.7份、抗氧化剂0.5~1.0份、流变调节剂0.1~0.3份和水30~45份。
3.根据权利要求2所述的混凝土建筑钢模用脱模剂,其特征在于,所述原料的重量份配比为:矿物油38~48份、液体石蜡4~7.5份、乳化剂10~15份、双酚A型环氧树脂5~10份、聚马来酸酐0.6~0.9份、磷酸锌0.4~0.7份、抗氧化剂0.6~0.9份、流变调节剂0.15~0.25份和水32~40份。
4.根据权利要求1~3之一所述的混凝土建筑钢模用脱模剂,其特征在于,所述矿物油为10#白油、15#白油和32#白油中的一种或几种。
5.根据权利要求1~4之一所述的混凝土建筑钢模用脱模剂,其特征在于,所述乳化剂为十二烷基硫酸钠、Span-60、Tween-60和AEO9中的一种或几种。
6.根据权利要求1~5之一所述的混凝土建筑钢模用脱模剂,其特征在于,所述抗氧化剂为丁基羟基茴香醚、二丁基羟基甲苯和叔丁基对苯二酚中的一种或几种。
7.根据权利要求1~6之一所述的混凝土建筑钢模用脱模剂,其特征在于,所述双酚A型环氧树脂为E-35型双酚A型环氧树脂、E-42型双酚A型环氧树脂和E-44型双酚A型环氧树脂中的一种或几种。
8.根据权利要求1~7之一所述的混凝土建筑钢模用脱模剂,其特征在于,所述流变调节剂为聚乙烯醇、聚乙烯蜡和聚丙烯酰胺中的一种或几种。
9.一种如权利要求1~8之一所述的混凝土建筑钢模用脱模剂的制备方法,其特征在于,包括以下步骤:
(1)将水、矿物油和乳化剂分散均匀,加入液体石蜡,不断搅拌,得基底液;
(2)将步骤(1)所得的基底液进行升温,然后加入双酚A型环氧树脂进行搅拌,再加入聚马来酸酐和磷酸锌,进行反应,得反应液;
(3)将步骤(2)所得的反应液进行降温,然后加入抗氧化剂和流变调节剂,进行搅拌,即得混凝土建筑钢模用脱模剂。
10.根据权利要求9所述的混凝土建筑钢模用脱模剂的制备方法,其特征在于,步骤(2)中,所述升温为升温至70~80℃;所述反应的时间为1~2h;步骤(3)中,所述降温为降温至30~40℃;所述搅拌的时间为30~60min。
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