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Magnesium-alloy paint-remover composition and its production

A technology of composition and paint remover, applied in the direction of chemical paint/ink remover, coating, etc., can solve the problems of slow paint removal, corrosion, and high corrosion of the substrate, and achieve the effect of low corrosion

Inactive Publication Date: 2007-06-20
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, many kinds of chemical paint removers have appeared on the market, such as Chongqing Three Gorges brand T-1 and T-2 paint removers. Although the use of these paint removers has greatly improved compared with traditional methods, the use of these paint removers When removing the old paint film, it needs to soak for a long time, the speed of paint removal is slow, and the dosage is large, which is highly corrosive to the substrate
Since magnesium alloy is an extremely active metal, the standard electrode potential is low, which makes the corrosion resistance of magnesium alloy very poor, and it is easy to be severely corroded in corrosive media, which is not suitable for most corrosive environments, so now Some paint removers are not suitable for removing the paint film on the surface of magnesium alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This embodiment is used to illustrate the magnesium alloy paint remover composition provided by the present invention and its preparation method.

[0023] Add 62 parts by weight of dichloromethane and 15 parts by weight of ethanol into a polytetrafluoroethylene container, mix well, then add 5 parts by weight of liquid paraffin, stir evenly, and let stand for 6 minutes. Then, 10 parts by weight of formic acid, 5 parts by weight of sodium dodecylbenzenesulfonate and 3 parts by weight of fluoroboric acid corrosion inhibitor were added under stirring, and after uniform stirring, the magnesium alloy paint remover composition T1 was obtained. Wherein, the composition of the magnesium alloy paint remover composition T1 is shown in Table 1.

Embodiment 2-6

[0025] According to the same method and steps as in Example 1, magnesium alloy paint remover compositions T2-T6 were respectively obtained, wherein the compositions of magnesium alloy paint remover compositions T2-T6 are shown in Table 1.

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PUM

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Abstract

A magnesium-alloy paint remover composition consists of halohydrocarbon 50-90wt%, acid 2-15wt%, alcohol 2-20wt%, liquefied hydrocarbon 0.5-10wt%, emulsifier 0.5-10wt% and corrosion inhibitor 0.1-5wt%. It can remove surface paint film shortly and have no secondary spray.

Description

technical field [0001] The invention relates to a paint remover composition and a preparation method thereof, more particularly to a magnesium alloy paint remover composition and a preparation method thereof. Background technique [0002] As a substitute for plastic, magnesium alloy is generally used to make industrial product casings. Compared with plastics, magnesium alloys have lower density, higher strength, better vibration resistance, and can absorb electromagnetic radiation, and more than 80% of magnesium alloys can be recycled and have little environmental pollution, so magnesium alloys are called " Green Metal". [0003] For the recycling of magnesium alloys, the old paint film attached to the treated surface must be stripped. Depending on the substrate and coating, different methods can be used to remove old paint films. The traditional paint removal methods are soda boiling, mechanical removal and fire. The disadvantages of these traditional methods are that t...

Claims

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Application Information

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IPC IPC(8): C09D9/00
Inventor 梁伟陈梁宫清
Owner BYD CO LTD
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