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WO2019006670A1 - 一种溶剂型脱漆剂及其应用和工件脱漆方法 - Google Patents

一种溶剂型脱漆剂及其应用和工件脱漆方法 Download PDF

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Publication number
WO2019006670A1
WO2019006670A1 PCT/CN2017/091737 CN2017091737W WO2019006670A1 WO 2019006670 A1 WO2019006670 A1 WO 2019006670A1 CN 2017091737 W CN2017091737 W CN 2017091737W WO 2019006670 A1 WO2019006670 A1 WO 2019006670A1
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Prior art keywords
workpiece
parts
paint
solvent
based paint
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Application number
PCT/CN2017/091737
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English (en)
French (fr)
Inventor
方招娣
Original Assignee
深圳市长宏泰科技有限公司
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Priority to PCT/CN2017/091737 priority Critical patent/WO2019006670A1/zh
Publication of WO2019006670A1 publication Critical patent/WO2019006670A1/zh

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D9/00—Chemical paint or ink removers
    • C09D9/04—Chemical paint or ink removers with surface-active agents

Definitions

  • the present invention relates to the field of surface treatment technology, and in particular to a solvent type paint stripper and its application and a workpiece stripping method.
  • the surface treatment technology of the workpiece is usually applied.
  • the surface treatment of aluminum, iron and their alloys goes deep into all walks of life.
  • most of the work needs to be pretreated before surface treatment, for example, cleaning, decontamination and degreasing, and stripping is required for some specific workpieces.
  • the coating needs to be recoated and the old coating needs to be removed before repainting.
  • Paint strippers usually use the penetration of solvent molecules to swell, soften, wrinkle and dissolve the crosslinked polymer material under the action of activators, cosolvents and other components, and peel off off the surface of the substrate.
  • Some paint strippers contain methylene chloride, phenol, toluene solvent and hydrofluoric acid. These paint strippers are highly toxic and highly corrosive to the substrate.
  • a solvent-based paint remover which is safe and effective and which is less corrosive to a substrate, and an application thereof and a paint stripping method of the workpiece are provided.
  • a solvent-based paint stripper comprising the following components in parts by weight: 60-100 parts of propylene glycol butyl ether, 10-30 parts of glacial acetic acid, 10-20 parts of benzyl alcohol, 5-20 parts of a Phenol, 1-4 parts sodium alkylbenzene sulfonate.
  • a workpiece stripping method comprising the steps of: formulating a solvent-based paint stripper as described above; pouring a paint stripper into a paint strip; immersing the paint workpiece in the bath, the paint film is thicker
  • the workpiece can be first smeared with a knife and then immersed in the paint strip. After the coating on the surface of the workpiece is foamed or wrinkled, it is taken out, and the workpiece is placed in clean water to rinse or rinse, and the coating is separated from the surface of the workpiece.
  • the solvent type paint stripper is used for surface coating or plastic layer removal of a metal workpiece.
  • a solvent-based paint stripper comprising the following components in parts by weight: 60-100 parts of propylene glycol butyl ether, 10-30 parts of glacial acetic acid, 10-20 parts of benzyl alcohol, 5-20 parts of A Phenol, 1-4 parts sodium alkylbenzene sulfonate.
  • a workpiece stripping method comprising the steps of: formulating a solvent-based paint remover as described above; pouring a paint stripper into a paint strip; immersing the paint workpiece in the bath, the paint film is thick
  • the workpiece can be first smeared with a knife and then immersed in the paint strip. After the coating on the surface of the workpiece is foamed or wrinkled, it is taken out, and the workpiece is placed in clean water to rinse or rinse, and the coating is separated from the surface of the workpiece.
  • the solvent-based paint stripper is used for surface coating or plastic layer removal of a metal workpiece.
  • This embodiment provides a solvent-based paint stripper comprising the following components in parts by weight: 60-1 00 parts of propylene glycol butyl ether, 10-30 parts of glacial acetic acid, 10-20 parts of benzyl alcohol, 5-20 parts of cresol, 1-4 parts of sodium alkylbenzene sulfonate.
  • the parts by weight of the propylene glycol butyl ether are preferably from 70 to 90.
  • the glacial acetic acid is preferably 15-25 parts by weight.
  • the parts by weight of benzyl alcohol are preferably 12-18.
  • the cresol is preferably 10-15 parts by weight.
  • the sodium alkylbenzenesulfonate is preferably 2-3 parts by weight.
  • the stripping agent stripping mechanism of the embodiment is: using propylene glycol butyl ether as a solvent, and having a low molecular weight, it can quickly penetrate into the coating layer after the paint stripping, so that the paint film softens and swells, and falls off as soon as possible.
  • the dissolving power is centered, so that the peeled coating is not melted in the paint stripper, which contributes to the service life of the paint stripper.
  • Benzyl alcohol is used as a co-solvent to enhance the stripping effect.
  • Glacial acetic acid and cresol act as activators to accelerate the separation of the coating from the substrate.
  • Sodium alkylbenzene sulfonate acts as a retarder to form a film on the surface of the solution to close the surface.
  • the solvent in the paint stripper is difficult to volatilize and improves the paint stripping effect.
  • the above solvent-based paint stripping agent is mainly used for surface coating or plastic layer removal of metal workpieces.
  • the metal workpiece can be aluminum, iron, zinc alloy, etc.
  • the coating can be various types of electrophoretic paint, baking varnish, etc., or can be spray-coated.
  • the aluminum stripping method includes the following steps: Pour the stripping liquid into the stripping tank, and then immerse the stripped workpiece in the product. The thicker film can be scratched to the metal substrate. Re-immersion In the liquid. After the coating on the surface of the workpiece is blistered or wrinkled, take it out, rinse or rinse the workpiece in clean water, and the coating will be clean and completely detached from the workpiece.
  • the impregnation time is 1-10 minutes.
  • the above solvent-based paint remover adopts the combination of the above-mentioned formula components, does not use strong corrosive concentrated sulfuric acid, has low corrosivity to the substrate, is safe and environmentally friendly, and the organic paint stripping agent used for the solvent type paint remover is highly efficient.
  • the expansion and peeling type paint remover removes the paint film by osmotic expansion, and the paint stripping speed is fast and the service life is long.
  • composition range, preparation method, and use effect of the above paint remover are exemplified by a plurality of examples.
  • the paint stripping method is as follows: the solvent-based paint stripper is added to the paint strip; the lacquered workpiece is immersed in the bath for 5 minutes, taken out, the surface of the workpiece is observed, the coating is foamed off, and the workpiece is placed. Rinse into clean water, the workpiece is clean and free of residue, no corrosion.
  • the stripping method is as follows: the solvent-based paint stripper is added to the paint strip; the lacquered workpiece is immersed in the bath for 5 minutes, taken out, the surface of the workpiece is observed, the coating is foamed off, and the workpiece is placed Rinse into clean water, the workpiece is clean and free of residue, no corrosion.
  • the paint stripping method is as follows: adding the configured solvent type paint stripper to the paint strip; immersing the paint workpiece in the tank 5 minutes in the liquid, take out, observe the surface of the workpiece, the coating foaming off, the workpiece is washed in clean water, the workpiece is clean and free of residue, no corrosion.
  • the paint stripping method is as follows: the solvent-based paint stripper is added to the paint strip; the lacquered workpiece is immersed in the bath for 5 minutes, taken out, the surface of the workpiece is observed, the coating is foamed off, and the workpiece is placed. Rinse into clean water, the workpiece is clean and free of residue, no corrosion.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

一种溶剂型脱漆剂及其用于工件脱漆方法，所述的溶剂型脱漆剂包括按照重量份数配比的下列成分：60-100份丙二醇丁醚，10-30份冰醋酸，10-20份苯甲醇，5-20份甲酚，1-4份烷基苯磺酸钠；所述的脱漆方法包括，配制所述的溶剂型脱漆剂；将脱漆剂倒入脱漆槽中；将带漆工件浸入槽液中，漆膜较厚的工件可先用小刀将漆膜划开再浸入脱漆槽中。待工件表面的涂层起泡或起皱后，取出，将工件放入清水中冲洗或漂洗，涂层脱离工件表面。所述的溶剂型脱漆剂没有采用强腐蚀性的浓硫酸，对基材无腐蚀性，通过渗透膨胀作用，使漆膜呈片状剥落，剥漆速度快且使用寿命长。

Description

说明书 发明名称：一种溶剂型脱漆剂及其应用和工件脱漆方法 技术领域
[0001] 本发明涉及表面处理技术领域， 具体涉及一种溶剂型脱漆剂及其应用和工件脱 漆方法。
背景技术
[0002] 为提高产品表面性能或者外观， 通常对工件表面处理技术。 例如， 铝、 铁及其 合金的表面处理工艺深入各行各业中。 而且， 大多数工作在进行表面处理前还 需要经过预处理， 例如， 进行清洗， 除污除油， 对于一些特定工件还需要进行 脱漆处理。 例如， 对于一些涂装不良涂层， 需要重新涂装涂层， 需要先退除旧 涂层， 再重新进行涂装。
[0003] 脱漆剂通常利用溶剂分子的渗透力， 在活化剂、 助溶剂和其他成分的作用下， 使交联的高分子材料溶胀、 软化、 起皱和溶解， 脱离基材表面而剥落下来。 一 些脱漆剂含有二氯甲烷， 苯酚， 甲苯类溶剂以及氢氟酸等， 此类脱漆剂毒性较 大， 对基材腐蚀性大。
技术问题
[0004] 有鉴于此， 提供一种安全有效且对基材腐蚀小的溶剂型脱漆剂及其应用和工件 脱漆方法。
问题的解决方案
技术解决方案
[0005] 一种溶剂型脱漆剂， 其包括按照重量份数配比的下列成分： 60-100份丙二醇丁 醚， 10-30份冰醋酸， 10-20份苯甲醇， 5-20份甲酚， 1-4份烷基苯磺酸钠。
[0006] 一种工件脱漆方法， 其包括下列步骤： 配制如上所述的溶剂型脱漆剂； 将脱漆 剂倒入脱漆槽中； 将带漆工件浸入槽液中， 漆膜较厚的工件可先用小刀将漆膜 划幵再浸入脱漆槽中。 待工件表面的涂层起泡或起皱后， 取出， 将工件放入清 水中冲洗或漂洗， 涂层脱离工件表面。
[0007] 以及， 所述的溶剂型脱漆剂用于金属工件的表面涂层或塑层的脱除。 发明的有益效果
有益效果
[0008] 一种溶剂型脱漆剂， 其包括按照重量份数配比的下列成分： 60-100份丙二醇丁 醚， 10-30份冰醋酸， 10-20份苯甲醇， 5-20份甲酚， 1-4份烷基苯磺酸钠。
[0009] 一种工件脱漆方法， 其包括下列步骤： 配制如上所述的溶剂型脱漆剂； 将脱漆 剂倒入脱漆槽中； 将带漆工件浸入槽液中， 漆膜较厚的工件可先用小刀将漆膜 划幵再浸入脱漆槽中。 待工件表面的涂层起泡或起皱后， 取出， 将工件放入清 水中冲洗或漂洗， 涂层脱离工件表面。
[0010] 以及， 所述的溶剂型脱漆剂用于金属工件的表面涂层或塑层的脱除。
本发明的实施方式
[0011] 以下将结合具体实施例对本发明进行详细说明。
[0012] 本实施例提供一种溶剂型脱漆剂， 其包括按照重量份数配比的下列成分： 60-1 00份丙二醇丁醚， 10-30份冰醋酸， 10-20份苯甲醇， 5-20份甲酚， 1-4份烷基苯磺 酸钠。
[0013] 具体地， 丙二醇丁醚的重量份数优选为 70-90。 冰醋酸的重量份数优选为 15-25 。 苯甲醇的重量份数优选为 12-18。 甲酚的重量份数优选为 10-15。 烷基苯磺酸钠 的重量份数优选为 2-3。
[0014] 本实施例的脱漆剂脱漆机理为： 以丙二醇丁醚作为溶剂， 其分子量低的， 它能 够在脱漆吋迅速渗透到涂层中去， 使漆膜软化膨胀， 尽快脱落， 溶解力居中， 能使被剥离的涂层在脱漆剂中不被融化， 有助于脱漆剂的使用寿命。 苯甲醇作 为助溶剂， 增进脱漆效果， 冰醋酸、 甲酚作为活化剂加速涂层与基材分离， 烷 基苯磺酸钠作为阻挥剂， 在溶液表面形成一层薄膜， 封闭表面， 使脱漆剂中的 溶剂难以挥发， 提高脱漆效果。
[0015] 上述溶剂型脱漆剂主要用于金属工件的表面涂层或塑层的脱除。 金属工件可以 是铝材， 铁件， 锌合金等， 涂层可以是各类电泳漆、 烤漆等， 还可以是喷塑涂 层。 以应用于铝材工件为例， 具体脱漆方法包括以下步骤： 将剥漆液倒入脱漆 槽中， 然后将带漆工件浸入本品中， 较厚的漆膜可先划破至金属基体再浸入工 作液中。 待工件表面的涂层起泡或起皱后， 取出， 将工件放入清水中冲洗或漂 洗， 涂层便会干净彻底地脱离工件。 视涂层种类、 厚度及工件状况， 浸渍吋间 为 1-10分钟。
[0016] 上述溶剂型脱漆剂采用上述配方成分的组合， 没有采用强腐蚀性的浓硫酸， 对 基材腐蚀性小， 安全环保， 而且上述溶剂型脱漆剂采用的有机剥漆剂是高效膨 胀剥离型脱漆剂， 通过渗透膨胀作用， 使漆膜呈片状剥落， 剥漆速度快且使用 寿命长。
[0017] 以下通过多个实施例来举例说明上述脱漆剂的组成范围、 配制方法以及使用效 果等方面。
[0018] 实施例 1
[0019] 取如下用量的各成分： 60份丙二醇丁醚， 10份冰醋酸， 10份苯甲醇， 5份甲酚
， 1份烷基苯磺酸钠， 将它们置于混合容器中， 充分搅拌， 混合均匀后， 配制成 溶剂型脱漆剂， 备用。
[0020] 脱漆方法如下： 将配置好的溶剂型脱漆剂加入到脱漆槽中； 将带漆工件浸入槽 液中 5分钟， 取出， 观察工件表面， 涂层起泡脱落， 将工件放入清水中冲洗， 工 件干净无残留， 无腐蚀。
[0021] 实施例 2
[0022] 取如下用量的各成分： 70份丙二醇丁醚， 18份冰醋酸， 13份苯甲醇， 10份甲酚
， 2份烷基苯磺酸钠， 将它们置于混合容器中， 充分搅拌， 混合均匀后， 配制成 溶剂型脱漆剂， 备用。
[0023] 脱漆方法如下： 将配置好的溶剂型脱漆剂加入到脱漆槽中； 将带漆工件浸入槽 液中 5分钟， 取出， 观察工件表面， 涂层起泡脱落， 将工件放入清水中冲洗， 工 件干净无残留， 无腐蚀。
[0024] 实施例 3
[0025] 取如下用量的各成分： 80份丙二醇丁醚， 25份冰醋酸， 16份苯甲醇， 15份甲酚
， 3份烷基苯磺酸钠， 将它们置于混合容器中， 充分搅拌， 混合均匀后， 配制成 溶剂型脱漆剂， 备用。
[0026] 脱漆方法如下： 将配置好的溶剂型脱漆剂加入到脱漆槽中； 将带漆工件浸入槽 液中 5分钟， 取出， 观察工件表面， 涂层起泡脱落， 将工件放入清水中冲洗， 工 件干净无残留， 无腐蚀。
[0027] 实施例 4
[0028] 取如下用量的各成分： 100份丙二醇丁醚， 30份冰醋酸， 20份苯甲醇， 20份甲 酚， 4份垸基苯磺酸钠， 将它们置于混合容器中， 充分搅拌， 混合均匀后， 配制 成溶剂型脱漆剂， 备用。
[0029] 脱漆方法如下： 将配置好的溶剂型脱漆剂加入到脱漆槽中； 将带漆工件浸入槽 液中 5分钟， 取出， 观察工件表面， 涂层起泡脱落， 将工件放入清水中冲洗， 工 件干净无残留， 无腐蚀。
[0030] 需要说明的是， 本发明并不局限于上述实施方式， 根据本发明的创造精神， 本 领域技术人员还可以做出其他变化， 这些依据本发明的创造精神所做的变化， 都应包含在本发明所要求保护的范围之内。

Claims

权利要求书
[权利要求 1] 一种溶剂型脱漆剂， 其包括按照重量份数配比的下列成分： 60-100份 丙二醇丁醚， 10-30份冰醋酸， 10-20份苯甲醇， 5-20份甲酚， 1-4份烷 基苯磺酸钠。
[权利要求 2] 如权利要求 1所述的溶剂型脱漆剂 ， 其特征在于， 所述丙二醇丁醚的 重量份数为 70-90。
[权利要求 3] 如权利要求 1所述的溶剂型脱漆剂
份数为 15-25。
[权利要求 4] 如权利要求 1所述的溶剂型脱漆剂
份数为 12-18。
[权利要求 5] 如权利要求 1所述的溶剂型脱漆剂
数为 10-15。
[权利要求 6] 如权利要求 1所述的溶剂型脱漆剂
数为 10-15。
[权利要求 7] —种工件脱漆方法， 其包括下列步骤： 配制如权利要求 1-8任一项所 述的溶剂型脱漆剂； 将脱漆剂倒入脱漆槽中； 将带漆工件浸入槽液中 ， 漆膜较厚的工件可先用小刀将漆膜划幵再浸入脱漆槽中。 待工件表 面的涂层起泡或起皱后， 取出， 将工件放入清水中冲洗或漂洗， 涂层 脱离工件表面。
[权利要求 8] 如权利要求 1-6任一项所述的溶剂型脱漆剂用于金属工件的表面涂层 或塑层的脱除。
PCT/CN2017/091737 2017-07-04 2017-07-04 一种溶剂型脱漆剂及其应用和工件脱漆方法 WO2019006670A1 (zh)

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US11352270B2 (en) 2017-03-24 2022-06-07 Asahi Kasei Kabushiki Kaisha Porous membrane for membrane distillation, and method for operating membrane distillation module

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