Most optical plastics are less stable than optical glass. Generally speaking, it has poor resistance to organic solvents and is easy to dissolve and swell in organic solvents; Therefore, when using ultrasonic cleaning equipment technology to clean plastic parts, there are strict requirements for process conditions and cleaning penalty: Generally speaking, the force of ultrasonic cleaning equipment should not be too intense, and the chemical effect of cleaning agent should not be too strong.
For the cleaning agent, it is first required to be able to wet the parts and dirt, so that the cleaning agent can dissolve, emulsify and disperse the dirt in the ultrasonic field; At the same time, it is also required that the cleaning solution is easy to form a layer of liquid film on the surface of the parts, so as to prevent the re adsorption and deposition of the dirt
Enzyme preparation solution refers to the aqueous solution of lipase or protease. Lipase can make oil hydrolyze rapidly and produce water-soluble organic acids and alcohols under proper temperature, pH value and ultrasonic cleaning equipment; Protease can promote the rapid hydrolysis of protein to produce various amino acids and dissolve in water.
Therefore, the enzyme preparation, which can quickly remove oil stains without affecting the surface properties of optical parts, is an ideal cleaning agent for plastic optical parts in the cleaning process of ultrasonic cleaning equipment.