Permeability determination
AssigneeIndustrial Textiles & Plastics Ltd.
InventorRichard R. Menage
Life of this patent
Estimating the term…
Abstract
Apparatus and methods determine a permeation characteristic of a challenge chemical for a chemical protective material. A processor retrieves barrier characteristics of the chemical protective material for which the permeation characteristic is to be determined from a computer memory. Information regarding the challenge chemical is obtained. A temperature is received of the chemical protective material for which the permeation characteristic is to be determined. The permeation characteristic is determined from the temperature, the barrier characteristics, and the information regarding the challenge chemical.
Claims16
A method for determining a time for a challenge chemical to cumulatively permeate through a chemical protective material to a toxicity limit, the method comprising:
- retrieving, with the processor, barrier characteristics of the chemical protective material from a computer memory;
- obtaining, with the processor, information regarding the challenge chemical, the information including a toxicity limit for the challenge chemical;
- receiving, at the processor, a temperature of the chemical protective material for which the time is to be determined;
- and
- using the temperature, the barrier characteristics, and the information regarding the challenge chemical, to determine a time for the cumulative permeation of the challenge chemical through the material to reach the toxicity limit at the received temperature.
An apparatus for determining a time for a challenge chemical to cumulatively permeate through a chemical protective material to a toxicity limit, the apparatus comprising:
- a memory comprising barrier characteristics for a plurality of chemical protective materials;
- an input interface that receives a selection of the chemical protective material from the plurality of chemical protective materials;
- a microprocessor communicatively connected to the memory and the input interface, the microprocessor configured to:
- retrieve at least one barrier characteristic of the chemical protective material from the memory;
- obtain information regarding a challenge chemical, the information including a toxicity limit for the challenge chemical;
- obtains a temperature of the chemical protective material for which the time is to be determined;
- and
- determine the time for the cumulative permeation of the challenge chemical through the material to reach the toxicity limit at the selected temperature using the temperature, the barrier characteristics, and the information regarding the challenge chemical;
- and
- a display operable by the microprocessor to the present the determined time.
A non-transient computer readable medium programmed with computer readable codes that upon execution by a microprocessor, causes the microprocessor to:
- retrieve at least one characteristic of a chemical protective material from a computer memory;
- obtain information regarding a challenge chemical, the information including a toxicity limit for the challenge chemical;
- receive a temperature of the chemical protective material at which the time is to be determined;
- and
- use the temperature, the at least one characteristic, and the information regarding the challenge chemical, to determine a time for the cumulative permeation of the challenge chemical through the material to reach the toxicity limit at the receiving temperature.
Dependencies are inferred from the claim text.