Electronic circuits cleaning

The basic considerations for spectrophotometer maintenance are safely and cleanliness. Maintaining a safe and clean work environment ensures a longer life for the instruments and a lower likelihood for problems relating to contamination, broken or misaligned parts, or injury. Solutions spilled on sensitive electronic circuits can render them inoperative. Any spills should be cleaned up immediately according to local safety protocols. 

Uses Manufacture of fluorocarbon refrigerants, fluorocarbon plastics, and propellants solvent for natural products analytical chemistry cleansing agent soil fumigant insecticides preparation of chlorodifluoromethane, methyl fluoride, salicylaldehyde cleaning electronic circuit boards in fire extinguishers. 

The procedural controls applicable for the preventive maintenance and repair of the hardware provide a mechanism for anticipating problems and, as a consequence, possible loss of data. Modem hardware usually requires minimum maintenance because electronic circuit boards, for example, are usually easily replaced and cleaning may be limited to dust removal. Diagnostic software is usually available from the supplier to check the performance of the computer system and to isolate defective integrated circuits. Maintenance procedures should be included in the organization s standard operating procedures. The availability of spare parts and access to qualified service personnel are important for the smooth operation of the maintenance program. 

MAJOR PRODUCT APPLICATIONS paints (non-skid coatings, textured paints, flatting), chemical carrier, cleaning and polishing liquids, soaps, tooth polishing pastes and powders, cleaning electronic circuit boards... 

HCFC-225aa, HCFC-225ca and HCFC-225cb are solvents which are useful for the cleaning of electronic circuit boards and can provide a temporary replacement for CFC-113 which has been extensively used for this application. The 225 isomers are readily prepared by the addition of HCFC-21 to TFE using an AlC F catalyst... 

The other CFC of major environmental concern was CFC-113, C2F3CI3. It was used extensively for cleaning the glue, grease and solder residues from electronic circuit boards after their fabrication, up to 2 kg m . 

Surfactants are often used for cleaning objects as well as for industrial waste water treatment. Thus, high-molecular fluorocarbon surfactants in a perfluorinated carrier liquid were used as liquid rinses for the decontamination of model electronic circuit boards [324]. A three log reduction in contamination was obtained in 1 hour, and the circuit boards were still functional... 

Uses Solvent cleaner, rinsing agent for precision and electronic cleaning, defluxing of electronic circuit assemblies heat transfer fluid lubricant carrier water drying agent spray contact cleaner Trade Name Synonyms HFE-7100 [3M/Perf. Materials]... 

Parylene is extremely resistant to chemical attack, exceptionally low in trace metal contamination, and compatible with all organic solvents used in the cleaning and processing of electronic circuits and systems. Although parylene is insoluble in most materials, it will soften in solvents having boiling points in excess of 150 C. 

CFC-11 (CCI3F) Plastic foam blowing solvent, electronic circuit board cleaning solvent 0.063 2.4... 

Solvents are used eommercially and induslrially for numerous applications. Some of those applications include polymer synthesis, coating formulations, cleaning (e.g., electronic circuit board, fabrics, ink supply lines, application equipment, and degreasing), and chemical processes. More than 300 solvents are currently used in the U.S. ... 

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