CN106520280A - 一种建筑金属模板脱模用改性硅油 - Google Patents
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Abstract
本发明公开了一种建筑金属模板脱模用改性硅油,涉及模板脱模剂技术领域,由如下重量份数的原料制成:甲基乙烯基硅油30‑40份、聚乙烯醇缩丁醛5‑9份、超细聚四氟乙烯微粉4‑8份、线性低密度聚乙烯3‑6份、氯化石蜡3‑6份、三鲸蜡醇磷酸酯2‑4份、C5石油树脂2‑4份、硫化猪油1‑2份、油茶籽粉1‑2份、磷酸氢二钠1‑2份、异丙醇15‑20份。本发明改性硅油透明度好,附着力强,对金属模板和混凝土无任何腐蚀性,并且能显著提高金属模板的脱模效果,有效保护模板和混凝土结构,大大延长模板的使用寿命。
Description
技术领域:
本发明涉及模板脱模剂技术领域,具体涉及一种建筑金属模板脱模用改性硅油。
背景技术:
混凝土成型需借助建筑模板来固定,待混凝土形成一定强度后需要拆除模板。为了防止模板拆除过程中混凝土粘连在模板上,给模板的再使用增加处理难度,通常会在模板内壁喷涂脱模剂。脱模剂在模板与混凝土表面之间起隔离与润滑作用,用以克服模板与混凝土表面的粘结力,使拆模时模板能顺利脱离混凝土,既保持混凝土形状完好无损,又保护模板表面不受损坏。
传统建筑模板脱模剂以废机油、地沟油和大豆油为主,虽然成本低,但脱模效果一般。目前,随着人们对脱模剂的深入研究,有机硅高分子树脂乳液分散体系类产品应运而生,但其使用成本高,并且在合成过程中产生的废弃物存在一定环保问题。
发明内容:
本发明所要解决的技术问题在于提供一种附着力强、对金属模板和混凝土无腐蚀性且能显著提高脱模效果的建筑金属模板脱模用改性硅油。
本发明所要解决的技术问题采用以下的技术方案来实现:
一种建筑金属模板脱模用改性硅油,由如下重量份数的原料制成:
甲基乙烯基硅油30-40份、聚乙烯醇缩丁醛5-9份、超细聚四氟乙烯微粉4-8份、线性低密度聚乙烯3-6份、氯化石蜡3-6份、三鲸蜡醇磷酸酯2-4份、C5石油树脂2-4份、硫化猪油1-2份、油茶籽粉1-2份、磷酸氢二钠1-2份、异丙醇15-20份。
其制备方法包括如下步骤:
(1)向异丙醇中加入线性低密度聚乙烯和氯化石蜡,并加热至回流状态保温搅拌15min,再加入C5石油树脂和硫化猪油,继续回流保温搅拌5min,保温结束后将所得混合物迅速转入0-5℃环境中冷却3h,然后加热至50-55℃保温混合5min,即得物料I;
(2)向甲基乙烯基硅油中加入聚乙烯醇缩丁醛和超细聚四氟乙烯微粉,充分混合后利用等离子表面处理机处理15s,然后再次充分混合,并于微波频率2450MHz、功率700W下微波处理5min,即得物料II;
(3)向物料II中加入物料I、三鲸蜡醇磷酸酯、油茶籽粉和磷酸氢二钠,混合均匀后静置30min,最后加热至115-120℃保温混合5min即可。
所述氯化石蜡使用前经过预处理,其处理方法为:向20份氯化石蜡中加入0.5份活性氧化镁和0.5份柠檬酸钾,搅拌使其分散均匀,并转入转速10-15r/min球磨机中研磨1h,再加入3份松香季戊四醇酯、2份萜烯树脂和0.5份钛酸酯偶联剂,充分混合后利用等离子表面处理机对所得混合物处理10s,然后在冰水浴下以10℃/min的速度冷却降温,待温度降至0-5℃后保温静置2h,再次利用等离子表面处理机处理10s,最后自然冷却至室温即可。
氯化石蜡经过上述预处理,增强其与其他原料的相容性,防止经混合后的原料在静置时出现分层或沉淀现象,并且还能够有效提高氯化石蜡的附着性和柔韧性。
所述等离子表面处理机的工作频率40Hz、输出功率600W。
本发明的有益效果是:本发明通过对甲基乙烯基硅油的改性处理制得建筑金属模板脱模用改性硅油,所得改性硅油透明度好,附着力强,对金属模板和混凝土无任何腐蚀性,并且能显著提高金属模板的脱模效果,有效保护模板和混凝土结构,大大延长模板的使用寿命。
经试验研究发现,在其他脱模主料和助剂相同的条件下,使用本发明所制改性硅油与单独使用甲基乙烯基硅油相比,其脱模成功率达到100%,且脱模后的模板和混凝土结构完好无损,同时将脱模剂的固化时间缩短50%以上。
具体实施方式:
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解,下面结合具体实施例,进一步阐述本发明。
实施例1
(1)向20份异丙醇中加入5份线性低密度聚乙烯和3份氯化石蜡,并加热至回流状态保温搅拌15min,再加入2份C5石油树脂和1份硫化猪油,继续回流保温搅拌5min,保温结束后将所得混合物迅速转入0-5℃环境中冷却3h,然后加热至50-55℃保温混合5min,即得物料I;
(2)向40份甲基乙烯基硅油中加入6份聚乙烯醇缩丁醛和4份超细聚四氟乙烯微粉,充分混合后利用等离子表面处理机处理15s,然后再次充分混合,并于微波频率2450MHz、功率700W下微波处理5min,即得物料II;
(3)向物料II中加入物料I、3份三鲸蜡醇磷酸酯、1份油茶籽粉和1份磷酸氢二钠,混合均匀后静置30min,最后加热至115-120℃保温混合5min即可。
氯化石蜡的预处理:向20份氯化石蜡中加入0.5份活性氧化镁和0.5份柠檬酸钾,搅拌使其分散均匀,并转入转速10-15r/min球磨机中研磨1h,再加入3份松香季戊四醇酯、2份萜烯树脂和0.5份钛酸酯偶联剂,充分混合后利用等离子表面处理机对所得混合物处理10s,然后在冰水浴下以10℃/min的速度冷却降温,待温度降至0-5℃后保温静置2h,再次利用等离子表面处理机处理10s,最后自然冷却至室温即可。
实施例2
(1)向15份异丙醇中加入4份线性低密度聚乙烯和3份氯化石蜡,并加热至回流状态保温搅拌15min,再加入2份C5石油树脂和1份硫化猪油,继续回流保温搅拌5min,保温结束后将所得混合物迅速转入0-5℃环境中冷却3h,然后加热至50-55℃保温混合5min,即得物料I;
(2)向35份甲基乙烯基硅油中加入5份聚乙烯醇缩丁醛和5份超细聚四氟乙烯微粉,充分混合后利用等离子表面处理机处理15s,然后再次充分混合,并于微波频率2450MHz、功率700W下微波处理5min,即得物料II;
(3)向物料II中加入物料I、2份三鲸蜡醇磷酸酯、1份油茶籽粉和1份磷酸氢二钠,混合均匀后静置30min,最后加热至115-120℃保温混合5min即可。
氯化石蜡的预处理:向20份氯化石蜡中加入0.5份活性氧化镁和0.5份柠檬酸钾,搅拌使其分散均匀,并转入转速10-15r/min球磨机中研磨1h,再加入3份松香季戊四醇酯、2份萜烯树脂和0.5份钛酸酯偶联剂,充分混合后利用等离子表面处理机对所得混合物处理10s,然后在冰水浴下以10℃/min的速度冷却降温,待温度降至0-5℃后保温静置2h,再次利用等离子表面处理机处理10s,最后自然冷却至室温即可。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。
Claims (4)
1.一种建筑金属模板脱模用改性硅油,其特征在于,由如下重量份数的原料制成:
甲基乙烯基硅油30-40份、聚乙烯醇缩丁醛5-9份、超细聚四氟乙烯微粉4-8份、线性低密度聚乙烯3-6份、氯化石蜡3-6份、三鲸蜡醇磷酸酯2-4份、C5石油树脂2-4份、硫化猪油1-2份、油茶籽粉1-2份、磷酸氢二钠1-2份、异丙醇15-20份。
2.根据权利要求1所述的建筑金属模板脱模用改性硅油,其特征在于,其制备方法包括如下步骤:
(1)向异丙醇中加入线性低密度聚乙烯和氯化石蜡,并加热至回流状态保温搅拌15min,再加入C5石油树脂和硫化猪油,继续回流保温搅拌5min,保温结束后将所得混合物迅速转入0-5℃环境中冷却3h,然后加热至50-55℃保温混合5min,即得物料I;
(2)向甲基乙烯基硅油中加入聚乙烯醇缩丁醛和超细聚四氟乙烯微粉,充分混合后利用等离子表面处理机处理15s,然后再次充分混合,并于微波频率2450MHz、功率700W下微波处理5min,即得物料II;
(3)向物料II中加入物料I、三鲸蜡醇磷酸酯、油茶籽粉和磷酸氢二钠,混合均匀后静置30min,最后加热至115-120℃保温混合5min即可。
3.根据权利要求1或2所述的建筑金属模板脱模用改性硅油,其特征在于:所述氯化石蜡使用前经过预处理,其处理方法为:向20份氯化石蜡中加入0.5份活性氧化镁和0.5份柠檬酸钾,搅拌使其分散均匀,并转入转速10-15r/min球磨机中研磨1h,再加入3份松香季戊四醇酯、2份萜烯树脂和0.5份钛酸酯偶联剂,充分混合后利用等离子表面处理机对所得混合物处理10s,然后在冰水浴下以10℃/min的速度冷却降温,待温度降至0-5℃后保温静置2h,再次利用等离子表面处理机处理10s,最后自然冷却至室温即可。
4.根据权利要求2或3所述的建筑金属模板脱模用改性硅油,其特征在于:所述等离子表面处理机的工作频率40Hz、输出功率600W。
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