Apparatuses and methods for incorporating blowing agents into li

Details Apparatuses and methods for incorporating blowing agents into li Apparatuses and methods for incorporating blowing agents into li

1991-06-04

1992-10-13

Williams, Hezron E.

Measuring and testing

Instrument mechanism or transmission

Rate of change

73 191, 521133, G01N 700

Patent

active

051540886

ABSTRACT:
Apparatus (10, 180, 260, 270) for incorporating blowing agents into a liquid material provides a high pressure liquid storage and mixing tank (20, 181, 261, 271) containing a mixture of liquid material (M) under pressure; means for delivering (59, 220, 232, 285) a pre-determined quantity of at least one blowing agent into the mixture in minute bubbles or droplets having an average diameter of from about less than 0.2 micron up to about 100 microns; and means for uniformly distributing (60, 110, 237, 276) the blowing agent throughout the liquid material. Apparatus (100, 260, 270) for measuring the volumetric expansion potential of at least one blowing agent and a liquid material component (M) within a closed system comprises a high pressure tank (106, 181, 261) containing liquid material and at least one blowing agent under pressure; means for measuring (135, 240) the volumetric expansion potential of the mixture, providing first (136, 250) and second (138, 251) chambers, communicating with each other and with the tank; means for transferring (142, 143, 243) the mixture into and out of the first and second chambers, the second measuring chamber having a volume sufficiently greater than the volume of the first chamber whereby at least some of the blowing agent will leave the mixture; means for measuring (164, 252) the pressure in the first chamber; and means for measuring (144, 145, 253) the volumes displaced by the mixture within the first and second first chambers. Finally methods are provided for use of the foregoing apparatuses.

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