Accession Number : ADA305226

Title :   Compatability of Contaminants and Plastics with Solvents. Revision.

Descriptive Note : Topical rept.,

Corporate Author : BENDIX CORP KANSAS CITY MO KANSAS CITY DIV

Personal Author(s) : Jackson, Lloyd C. ; Walsh, E. T.

PDF Url : ADA305226

Report Date : MAR 1975

Pagination or Media Count : 20

Abstract : The use of solvents is being looked at very critically as a result of environmental improvement requirements being established by state and federal agencies. Although purchase cost is a factor in selecting alternate solvents for particular requirements, performance controls the process cost and the integrity of a bonded part. Good adhesion depends upon effective contaminant removal and this is done by solvents. It is possible to characterize contaminants so that the exact solvent or solvents for an effective cleaning job can be known. To do this, solubility parameter technology and evaporative rate analysis techniques must be used. Accuracy in solvent selection for contaminant removal can be improved by classifying solvents into three groups of weak, moderate, and strong hydrogen bonding potential. Increased capability in contaminant removal can be obtained by select solvent blending utilizing solubility parameter values as a guide. The solvents selected to remove contaminants must not dissolve the plastic or cause crazing of the surface. Solvent sensitivity of plastics can be determined by a swell index test. Compatibility of contaminants-solvents-plastics and their interrelationships can be ascertained from the charts presented. jg p8

Descriptors :   *COMPATIBILITY, *CONTAMINANTS, *SOLVENTS, *PLASTICS, TEST AND EVALUATION, CONTROL, REMOVAL, HYDROGEN BONDS, BLENDING, PARAMETERS, ADHESION, SENSITIVITY, COSTS, SURFACES, CLASSIFICATION, EVAPORATION, CLEANING, SOLUBILITY, ENVIRONMENTAL PROTECTION, SELECTION, CRAZING.

Subject Categories : Solvents, Cleaners, and Abrasives
      Inorganic Chemistry
      Physical Chemistry
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE