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Composite microemulsion cleaning agent for cleaning aged trimethyl resin

A microemulsion and cleaning agent technology, applied in the field of composite microemulsion cleaning agents, can solve the problems of shedding, reduced air permeability, pure solvent toxicity, etc., and achieves the effects of system stability, easy transportation and use, and high dynamics

Inactive Publication Date: 2012-11-14
中国文化遗产研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water repellency of the mural is enhanced, the air permeability is reduced, and new diseases such as warping and falling off of the pigment layer are caused
[0006] 2) Pure solvent cleaning is difficult to control
[0008] 4) Toxicity, flammability and explosiveness of pure solvents: Field experiments are mostly carried out in a relatively closed tomb environment, lacking ventilation and air circulation
The volatility and toxicity of organic solvents can easily affect the health of operators and damage the environment of the ruins
In addition, during the transportation and use of solvents, there are also potential safety hazards

Method used

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  • Composite microemulsion cleaning agent for cleaning aged trimethyl resin
  • Composite microemulsion cleaning agent for cleaning aged trimethyl resin
  • Composite microemulsion cleaning agent for cleaning aged trimethyl resin

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Embodiment Construction

[0035] The compound microemulsion cleaning agent prepared by the present invention is composed of water, oil, surfactant and co-surfactant, and spontaneously forms a transparent or translucent, low-viscosity and isotropic thermodynamically stable system in an appropriate ratio.

[0036] The microemulsion is used to remove the aging sealing resin on the surface of murals. In order to reduce the volatility of the oil phase, the emulsion should be formulated as an O / W microemulsion with a single phase as much as possible. However, not any combination of water, oil, surfactant and co-surfactant can make a "single" microemulsion.

[0037] 1) Surfactants: Surfactants are mainly distributed at the oil / water interface, which greatly reduces the oil / water interfacial tension, and in the presence of co-surfactants, mixed adsorption occurs to form a mixed film, which further reduces the interfacial tension. And the stability of the microemulsion is enhanced through the self-generated el...

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Abstract

The invention discloses a composite microemulsion cleaning agent which is an oil-in-water type composite microemulsion and comprises the following components: 3-4g / 100ml of lauryl sodium sulfate, 6-8% of n-amyl alcohol in volume ratio, 1-7% of propylene carbonate in volume ratio and 1.5-11% of oil phase in volume ratio, wherein the oil phase comprises ethyl acetate or methylbenzene, dimethylbenzene, ethyl acetate and butyl ester in volume ratio of 39:11:11:39, or a mixture of n-butyl acetate, ethyl acetate and methylbenzene in volume ratio of 55:40:5. The invention also discloses a method for preparating the composite microemulsion cleaning agent. The composite microemulsion cleaning agent provided by the invention has the advantages of stable system, small collective, high trend, large interface, larger oil-water interface radius of curvature, safety, low toxicity, convenience in transportation and use and the like.

Description

technical field [0001] The invention relates to a composite microemulsion cleaning agent, in particular to a composite microemulsion cleaning agent for cleaning the aging resin covered on the surface of murals. Background technique [0002] An important work in the protection of world cultural heritage is the protection of ancient tomb murals. The current known technology is to use trimethyl resin to carry out reinforcement and sealing treatment on the surface of the mural paint layer. Trimethyl resin is a copolymer of methyl methacrylate, butyl methacrylate and methacrylic acid, which belongs to acrylic polymer resin. After many years, due to the aging of the resin, glare, discoloration, cracks and other phenomena will occur, resulting in darkening of the color of the mural picture layer, crispness, warping, cracking and other diseases. In addition, in the 1970s and 1990s, trimethyl resin was widely used in the protection of other types of cultural relics, such as bronzes...

Claims

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Application Information

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IPC IPC(8): C09D9/04
Inventor 成倩赵丹丹
Owner 中国文化遗产研究院
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