CN104674273A - High-temperature sealant removing agent and preparation method thereof - Google Patents
High-temperature sealant removing agent and preparation method thereof Download PDFInfo
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- CN104674273A CN104674273A CN201310632441.9A CN201310632441A CN104674273A CN 104674273 A CN104674273 A CN 104674273A CN 201310632441 A CN201310632441 A CN 201310632441A CN 104674273 A CN104674273 A CN 104674273A
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- remover
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Abstract
The invention aims at provided a high-temperature sealant removing agent and a preparation method thereof. The high-temperature sealant removing agent is characterized by comprising the following steps: 20-70 ml of dichloromethane, 10-30 ml of methanoic acid and 5-15 g of phenol. The removing agent can remove a sealant coating of a metal component adhesion surface, which works at 300 DEG C for a long term, by a chemical method, wherein the coating is removed completely, and no corrosion to a metal substrate exists; furthermore, the removing agent can be applied to removing organic coatings, material compositions of which are close those to organic silicon sealants; and the use method of the removing agent is simple, the cost is low, and the removing agent can be further applied to other fields.
Description
Technical field
The present invention relates to a kind of elevated-temperature seal agent remover and preparation method thereof, this remover is mainly used in the removal of aircraft engine part metals bonding surface sealing organic silicon sealant after long term operation at 300 DEG C of temperature.
Background technology
At aviation field, there are the metal parts bonding surfaces such as many casings, for ensureing routine operating pressure and the safety of its running working properly and keeping system, usually apply various sealing agent and it being sealed, to prevent the generation of the phenomenons such as gas leak of the oil leakage.When the work period terminate to carry out decomposition repair time, be stopping property when checking that part base solid has zero defect or guarantee to ressemble, all need to remove former sealing agent and again apply novel sealing agent.This type of sealing agent is generally made up of materials such as silicone resin, aluminium powder and matching dissolvents, through high temperature (about 300 DEG C) baking during work, makes its adhesivity comparatively strong, is difficult to remove with general organic solvent after decomposition.Current domestic existing coating removal agent is used for some low temperature enamelled coatings, be not suitable for the coating after hot operation and sealing agent, and some inorganic remover removal effects are better, but there is corrosion risk, be difficult to the working life and the reliability that ensure aviation component.In actual production, the general mechanical process such as scraper that adopt are removed, and the baroque part of not only inefficiency, and easy damaged matrix, particularly bonding surface, is more not suitable for adopting this kind of method.
Summary of the invention
The object of the present invention is to provide a kind of elevated-temperature seal agent remover and preparation method thereof, described remover can be removed between the metal parts bonding surface after long term operation at 300 DEG C of temperature by chemical process and use sealing agent coating, coating removal is thorough, and corrosion-free to metallic matrix.
The present invention specifically provides a kind of elevated-temperature seal agent remover, it is characterized in that, consisting of of described remover:
Methylene dichloride 20 ~ 70ml
Formic acid 10 ~ 30ml
Phenol 5 ~ 15g.
Preferably consisting of of described remover:
Methylene dichloride 50 ~ 60ml
Formic acid 20 ~ 25ml
Phenol 10 ~ 15g.
The preparation method of elevated-temperature seal agent remover of the present invention, it is characterized in that, preparation method is: the methylene dichloride and the formic acid that measure aequum, be placed in beaker and stir, then the phenol taking aequum joins in above-mentioned solution, is stirred to after phenol all dissolves and namely obtains described remover.
The application of elevated-temperature seal agent remover of the present invention, is characterized in that: described remover is applicable to remove the high temperature silicone sealing agent on metal parts.
The application of elevated-temperature seal agent remover of the present invention, is characterized in that: the body material of described metal parts is GH150 or 1Cr11Ni2W2MoV.
Present invention also offers a kind of minimizing technology of elevated-temperature seal agent, it is characterized in that: measure 20 ~ 70ml methylene dichloride and 10 ~ 30ml formic acid, be placed in beaker and stir, then taking 5 ~ 15g phenol joins in above-mentioned solution, be stirred to after phenol all dissolves and obtain remover, cover after dipping in remover with absorbent cotton on sealant layer and carry out invading profit, invade profit and use cotton balls wiping after 15 ~ 25 minutes, and remove with sand papering, finally with aero-washing gasoline or acetone, remover and removal thing are cleaned up.
Adopt remover of the present invention effectively can remove the sealing agent of metallic element surface after hot operation, solve and adopt mechanical means remove sealing agent easy damaged matrix and remove halfway problem; This remover also can be used for removing the material composition organic coating close with organic silicon sealant, and its use-pattern is simple, cost is low, can further expand to other field and use.
Embodiment
Embodiment 1
(1), the preparation of test piece:
Prepare the test piece totally 20 that body material is GH150, it is of a size of 100mm*50mm*2mm, with aero-washing gasoline washing and after sand papering, removing surface and oil contaminant and oxide film, clean with acetone again, sealing agent coating is carried out after drying, namely one deck is applied by the formulated elevated-temperature seal agent of 55wt% polyester modified organic silicon resin liquid, the pure silicone resin of 25wt%, 15wt% acrylic resin and 15wt% aluminum paste at the surface uniform of every sheet test piece, the area that one end of every sheet reserves 20mm*50mm is not coated with, and is convenient to two panels to fold and after solidifying separately.Test piece after coating places 15min under room temperature condition, then every two panels test piece is undertaken folded by the one side being coated with sealing agent a pair, two panels test piece steps up by means of bolt by placing clamp, is then warming up to 300 DEG C with baking oven and keeps 4h, take out stand-by after being cooled to room temperature.
(2), the preparation of remover:
30ml methylene dichloride and 12ml formic acid is measured with measuring cup, be placed in beaker and stir, then taking 7g phenol joins in above-mentioned solution, be stirred to after phenol all dissolves and obtain remover, more than prepare work to carry out in draughty work area, use during remover and need wear the gloves with butyl nylon lining.
(3), the removal of sealing agent:
Cover after dipping in remover with absorbent cotton on sealant layer and carry out invading profit, invade profit and use cotton balls wiping after 15 minutes, and remove with No. 1200 abrasive paper for metallograph polishings, finally with aero-washing gasoline or acetone, remover and removal thing are cleaned up, obtain clean test piece, the sealing agent in test piece is thoroughly eliminated.
Embodiment 2
Be that test piece body material is 1Cr11Ni2W2MoV with the difference of embodiment 1, the remover of employing consists of: 70ml methylene dichloride, 30ml formic acid, 10g phenol.
Embodiment 3
Be that test piece body material is 1Cr11Ni2W2MoV and GH150 two kinds with the difference of embodiment 1, often kind of test piece prepares 10, then be undertaken folded by being coated with the one side of sealing agent a pair with the test piece of two kinds of different matrix materials, the remover adopted consists of: 50ml methylene dichloride, 15ml formic acid, 15g phenol.
Embodiment 4
Each a slice of test piece prepared by Example 1 ~ 3 is immersed in respective remover, and soak taking-up after 20 minutes and carry out etching pit inspection, result proves that this remover is corrosion-free to test piece body material.
Embodiment 5
Each a slice of test piece prepared by Example 1 ~ 3 is immersed in respective remover, and soak taking-up after 20 minutes and carry out test piece weightless test, the rate of weight loss of each test piece of test result is all less than or equal to 0.01 ‰, namely substantially without weightless.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to spirit of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (6)
1. an elevated-temperature seal agent remover, is characterized in that, consisting of of described remover:
Methylene dichloride 20 ~ 70ml
Formic acid 10 ~ 30ml
Phenol 5 ~ 15g.
2., according to elevated-temperature seal agent remover described in claim 1, it is characterized in that, consisting of of described remover:
Methylene dichloride 50 ~ 60ml
Formic acid 20 ~ 25ml
Phenol 10 ~ 15g.
3. the preparation method according to elevated-temperature seal agent remover described in claim 1, it is characterized in that, preparation method is: the methylene dichloride and the formic acid that measure aequum, be placed in beaker and stir, then the phenol taking aequum joins in above-mentioned solution, is stirred to after phenol all dissolves and namely obtains described remover.
4. according to an application for elevated-temperature seal agent remover described in claim 1, it is characterized in that: described remover is applicable to remove the high temperature silicone sealing agent on metal parts.
5. according to the application of elevated-temperature seal agent remover described in claim 4, it is characterized in that: the body material of described metal parts is GH150 or 1Cr11Ni2W2MoV.
6. the minimizing technology of an elevated-temperature seal agent, it is characterized in that: measure 20 ~ 70ml methylene dichloride and 10 ~ 30ml formic acid, be placed in beaker and stir, then taking 5 ~ 15g phenol joins in above-mentioned solution, be stirred to after phenol all dissolves and obtain remover, cover after dipping in remover with absorbent cotton on sealant layer and carry out invading profit, invade profit and use cotton balls wiping after 15 ~ 25 minutes, and remove with sand papering, finally with aero-washing gasoline or acetone, remover and removal thing are cleaned up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310632441.9A CN104674273A (en) | 2013-11-28 | 2013-11-28 | High-temperature sealant removing agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310632441.9A CN104674273A (en) | 2013-11-28 | 2013-11-28 | High-temperature sealant removing agent and preparation method thereof |
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| CN104674273A true CN104674273A (en) | 2015-06-03 |
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| CN201310632441.9A Pending CN104674273A (en) | 2013-11-28 | 2013-11-28 | High-temperature sealant removing agent and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109456858A (en) * | 2018-11-07 | 2019-03-12 | 天津津航技术物理研究所 | A kind of optical cement remover and preparation method thereof |
| CN109605227A (en) * | 2018-11-23 | 2019-04-12 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of minimizing technology of inorganic sealant after metal surface worst hot case |
| CN110016679A (en) * | 2019-04-14 | 2019-07-16 | 广州恒荣电子科技有限公司 | A kind of screen frame detergent for wiring board |
| CN112626413A (en) * | 2020-11-28 | 2021-04-09 | 四川维珍高新材料有限公司 | Aviation case product and production process thereof |
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| CN101591487A (en) * | 2009-07-08 | 2009-12-02 | 天津工业大学 | A kind of surface paint removal and stripping treatment agent for waste pop can |
| CN103160846A (en) * | 2011-12-13 | 2013-06-19 | 贵州黎阳航空动力有限公司 | Chemical method for clearing sealant and solution prepared by using chemical method |
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| CN101230466A (en) * | 2007-01-24 | 2008-07-30 | 沈阳工业大学 | Degumming liquid |
| CN101591487A (en) * | 2009-07-08 | 2009-12-02 | 天津工业大学 | A kind of surface paint removal and stripping treatment agent for waste pop can |
| CN103160846A (en) * | 2011-12-13 | 2013-06-19 | 贵州黎阳航空动力有限公司 | Chemical method for clearing sealant and solution prepared by using chemical method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109456858A (en) * | 2018-11-07 | 2019-03-12 | 天津津航技术物理研究所 | A kind of optical cement remover and preparation method thereof |
| CN109605227A (en) * | 2018-11-23 | 2019-04-12 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of minimizing technology of inorganic sealant after metal surface worst hot case |
| CN110016679A (en) * | 2019-04-14 | 2019-07-16 | 广州恒荣电子科技有限公司 | A kind of screen frame detergent for wiring board |
| CN112626413A (en) * | 2020-11-28 | 2021-04-09 | 四川维珍高新材料有限公司 | Aviation case product and production process thereof |
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Application publication date: 20150603 |