Novel Fluorocarbon Polymer-Based Humidity Sensor

新型氟碳聚合物湿度传感器

• 批准号: 9260792
• 负责人: Oliver Murphy
• 金额: $ 5万
• 依托单位: Lynntech, Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-01-01 至 1993-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9260792&HistoricalAwards=false
• 关键词: Novel; Fluorocarbon; Polymer; Based; Humidity

There is a growing demand for inexpensive, sensitive and reliable humidity sensors with microprocessor-controlled electronics. Next to temperature, humidity is the most important variable in environmental measurement and control applications. In terms of detrimental effects on the life and performance of electronic equipment and quality control in manufacturing, humidity is often the more important parameter. Humidity sensors have broad industrial and domestic applications for increasing the reliability and effective use of electronic equipment, as well as decreasing energy consumption. Most commercially available relative humidity sensors use hydrophilic hydrocarbon-based polymer films as humidity-sensing elements. However, they are not sufficiently resistive to water or to elevated temperatures and cannot be used at high humidities for extended periods of time. In this project, the simple processing steps associated with an organic polymer will be taken advantage of in fabricating a highly sensitive, stable and durable humidity sensor. Shortcomings encountered with hydrocarbon-based polymers will be overcome by using highly stable proton-conducting fluorocarbon polymer materials. These materials have an established performance record in electrochemical system, e.g., fuel cells and chlor-alkali electrolyzers, under highly oxidizing and aggressive environments. The physical and chemical properties associated with proton-conducting fluorocarbon polymers make them very attractive as the sensing elements in humidity sensors.

对具有微处理器控制的电子设备的廉价、灵敏和可靠的湿度传感器的需求日益增长。在环境测量和控制应用中，湿度是仅次于温度的最重要变量。在对电子设备的寿命和性能的不利影响以及制造过程中的质量控制方面，湿度往往是更重要的参数。湿度传感器在提高电子设备的可靠性和有效使用以及降低能源消耗方面有着广泛的工业和家庭应用。大多数商业上可用的相对湿度传感器使用亲水性碳氢化合物聚合物薄膜作为湿度传感元件。然而，它们对水或高温的抵抗力不够，不能在高湿度下长时间使用。在这个项目中，与有机聚合物相关的简单加工步骤将被用于制造高灵敏度、稳定和耐用的湿度传感器。碳氢化合物聚合物遇到的缺点将通过使用高度稳定的质子导电氟碳聚合物材料来克服。这些材料在高氧化和腐蚀性环境下的电化学系统，如燃料电池和氯碱电解槽中具有良好的性能记录。质子导电氟碳聚合物的物理和化学性质使其作为湿度传感器的传感元件非常有吸引力。