CN107474931A - 一种水性凹土基压铸脱模剂及其制备方法 - Google Patents

一种水性凹土基压铸脱模剂及其制备方法 Download PDF

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CN107474931A
CN107474931A CN201710600915.XA CN201710600915A CN107474931A CN 107474931 A CN107474931 A CN 107474931A CN 201710600915 A CN201710600915 A CN 201710600915A CN 107474931 A CN107474931 A CN 107474931A
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releasing agent
casting mold
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CN107474931B (zh
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姚义俊
刘斌
饶伟锋
杨佳伟
齐贵君
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Taigu County Xinglong Foundry Co ltd
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Nanjing University of Information Science and Technology
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M173/00—Lubricating compositions containing more than 10% water
    • C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/06—Metal compounds
    • C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/10—Compounds containing silicon
    • C10M2201/102—Silicates
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/10—Compounds containing silicon
    • C10M2201/102—Silicates
    • C10M2201/103—Clays; Mica; Zeolites
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
    • C10M2209/084—Acrylate; Methacrylate
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/08—Resistance to extreme temperature
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/24—Emulsion properties
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/36—Release agents or mold release agents

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Abstract

本发明涉及一种水性凹土基压铸脱模剂及其制备方法,包括以下质量份的组分：氧化锆粉末15～20份、铝矾土15～17份、水合硅酸镁1～3份、改性凹凸棒石粘土5～7份、水40～50份、粘合剂1～3份、乳液1～3份、分散剂2～4份和消泡剂0.1～0.5份。本发明的水性凹土基压铸脱模剂具有高温不分解、易脱模、锻件光滑平整等优点，在模压过程中无烟、无火、无毒、无味、无粉尘，降低模具磨损，延长模具的使用寿命，该制备方法工艺简单，生产成本低，适于工业化生产。

Description

一种水性凹土基压铸脱模剂及其制备方法
技术领域
本发明涉及涂料制备技术领域，具体涉及一种水性凹土基压铸脱模剂及其制备方法。
背景技术
在铸造砂型工件表面上涂覆一层脱模剂，可以有效防止和减少逐渐表面粘砂、夹砂、砂眼等缺陷，降低铸件表面粗糙度。脱模剂的质量是影响铸件是否粘砂、夹砂及铸件表面光洁度以及铸件尺寸精度的最直接因素。脱模剂种类繁多，大体可以分为两类：醇基体系和水性体系。其中醇基体系在涂覆后经点燃既可固化，与各种自硬化砂工艺配合使用，可不需烘干，能缩短生产周期，简化工艺，节约能源，减少烘干设备投资，是被铸造界广为使用的一种快干涂料，已广泛应用于钢、铁、有色铸件的生产中。
但传统醇基体系易燃，不利于长距离运输，限制其使用，且传统的金属脱模剂添加大量的石墨材料，造成基体是黑色体系，高温锻造过程中产生的黑色粉尘把锻造设备、电器、工厂地面、墙壁蒙上黑色粉尘，产生令人不适的工作环境，操作人员手足、衣物被玷污，吸入工厂大气中飘浮石墨粉尘会导致支气管炎和肺尘症，损害身体健康。
因此，确有必要对现有技术进行改进以解决现有技术之不足。
发明内容
本发明的目的就是针对上述技术缺陷，提供一种水性凹土基压铸脱模剂及其制备方法，该制备方法工艺简单，生产成本低，适于工业化生产。
为实现上述发明目的，本发明提供的技术方案是：
一种水性凹土基压铸脱模剂，包括以下质量份的组分：
其中，所述改性凹凸棒石粘土为采用专利技术201210083674.3公开的工艺制备的凹凸棒石粘土。
所述粘合剂为聚乙烯醇缩丁醛，所述乳液采用水性丙烯酸乳液，所述分散剂为聚丙烯酸铵，所述消泡剂为二甲基聚硅氧烷。
本发明还公布上述的水性凹土基压铸脱模剂的制备方法：
按上述重量百分比准备氧化锆粉末、改性凹凸棒石粘土、铝矾土、水合硅酸镁，混合，加入去离子水以1500～3000转/分搅拌1～2h；再加入粘合剂、乳液、分散剂及消泡剂，然后用十字搅刀搅拌器充分搅拌，搅拌速度为1500～3000转/分，搅拌时间为1～2h，得脱模剂，备用。
本发明具有如下有益效果：
1.本发明的水性凹土基压铸脱模剂具有高温不分解、易脱模、锻件光滑平整等优点，模压过程中无烟、无火、无毒、无味、无粉尘，降低模具磨损，延长模具的使用寿命。
2.本发明脱模剂是水性树脂类脱模剂，能够在各种金属、塑料模具表面镀层，为白色乳液制品，密度为1.04-1.12g/cm3，PH值：6.5～8.0。
3.本发明脱模剂可通过浸涂、刷涂和喷涂等简单工艺附着在模具上，工艺简单易于实现工业化生产，且制备得到的水性脱模剂具有较好的稳定性，放置15天仍具有99.5％的悬浮性，有利于脱模剂在各种模具表面的均匀涂覆。
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。
以下各实施例中所用原料如下：
所述改性凹凸棒石粘土为采用专利技术201210083674.3公开的工艺制备的凹凸棒石粘土；
所述粘合剂为聚乙烯醇缩丁醛(PVB)；
所述乳液采用水性丙烯酸乳液；
所述分散剂主要成分是聚丙烯酸铵，可选用南京霄科纳米陶瓷技术开发有限公司生产的产品SD-00聚丙烯酸铵；
所述消泡剂为二甲基聚硅氧烷。
实施例1
将15份氧化锆粉末、5份改性凹凸棒石粘土粉料、16份铝矾土、1份水合硅酸镁加入45份去离子水，以1500～3000转/分搅拌1～2h，再加入2份粘合剂、2份乳液、4份分散剂及0.2份消泡剂，然后用十字搅刀搅拌器充分搅拌，搅拌速度为1500～3000转/分，搅拌时间为1～2h，得水性凹土基压铸脱模剂，备用。
实施例2
将20份氧化锆粉末、7份改性凹凸棒石粘土粉料、16份铝矾土、3份水合硅酸镁加入去44份离子水搅拌，以1500～3000转/分搅拌1～2h，再加入2份粘合剂、3份乳液、2份分散剂及0.3份消泡剂，然后用十字搅刀搅拌器充分搅拌，搅拌速度为1500～3000转/分，搅拌时间为1～2h，得水性凹土基压铸脱模剂，备用。
通过本发明的方法所制备的脱模剂为水性树脂类脱模剂，通过测定得到其密度为1.04-1.12g/cm3，pH值：6.5～8.0。
通过稳定性试验进行测定，结果放置15天仍具有99.5％的悬浮性，本发明制备得到的水性脱模剂具有较好的稳定性，有利于脱模剂在各种模具表面的均匀涂覆。
以上所述，仅是本发明的较佳实施例，并非对本发明作任何形式上的限制，任何熟悉本专业的技术人员，在不脱离本发明技术方案范围内，依据本发明的技术实质，对以上实施例所作的任何简单的修改、等同替换与改进等，均仍属于本发明技术方案的保护范围之内。

Claims (4)

1.一种水性凹土基压铸脱模剂，其特征在于：包括以下质量份的组分：
2.根据权利要求1所述的水性凹土基压铸脱模剂，其特征在于：所述改性凹凸棒石粘土为采用专利技术201210083674.3公开的工艺制备的凹凸棒石粘土。
3.根据权利要求1所述的水性凹土基压铸脱模剂，其特征在于：所述粘合剂为聚乙烯醇缩丁醛，所述乳液采用水性丙烯酸乳液，所述分散剂为聚丙烯酸铵，所述消泡剂为二甲基聚硅氧烷。
4.权利要求1～3任一项所述的水性凹土基压铸脱模剂的制备方法，其特征在于：
按上述重量百分比准备氧化锆粉末、改性凹凸棒石粘土、铝矾土、水合硅酸镁，混合，加入去离子水以1500～3000转/分搅拌1～2h；再加入粘合剂、乳液、分散剂及消泡剂，然后用十字搅刀搅拌器充分搅拌，搅拌速度为1500～3000转/分，搅拌时间为1～2h，得脱模剂，备用。
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CN108838361A (zh) * 2018-09-04 2018-11-20 安徽惠明机械制造有限公司 一种压铸件的铸造方法
CN109663886A (zh) * 2019-02-24 2019-04-23 湖南七纬科技有限公司 一种金属压铸脱模剂及其制备方法

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CN108838361A (zh) * 2018-09-04 2018-11-20 安徽惠明机械制造有限公司 一种压铸件的铸造方法
CN108838361B (zh) * 2018-09-04 2020-07-31 安徽惠明机械制造有限公司 一种压铸件的铸造方法
CN109663886A (zh) * 2019-02-24 2019-04-23 湖南七纬科技有限公司 一种金属压铸脱模剂及其制备方法

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