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Studies on the Prototype of Dynamic Viscoelasticity and Electrical Characteristic Testing Apparatus of Foam Membrane

泡沫膜动态粘弹性及电特性测试仪样机研究

基本信息

批准号：
01880017
负责人：
MINAGAWA Motoi
金额：
$ 9.28万
依托单位：
Osaka City University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1991
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-01880017/
关键词：
blow ratio measuring apparatus drainage velocity measuring apparatus dynamic viscoelascticity measuring apparatus contact angle measuring apparatus dynamic film tension meter biaxial film extending apparatus dynamic wetting foam characterist

项目摘要

In the cleaning and dyeing processes by using foam, a study on phy sico-chemical behavior of foam is much indispensable. However, there is no commercial testing apparatus to determine precisely a dynameasuring istics of vapor-liquid interface.Therefore, in this study, a prototype of testing apparatuses has been developed on the basis of a new concept with the aid of electronic techniques and sensory techniques. The apparatuses include : (1) blow ratio measuring apparatus of foam, (2) drainage velocity measuring apparatus, (3) dynamic viscbelasticity measuring apparatus, (4) contact angle measuring apparatus, (5) dynamic film tension meter, (6) biaxiak film extending apparatus, (7) apparatus for measuring shear stress with dynamic wetting, and other apparatuses. In the original study program, a most difficult measuring method of the dynamic viscoelasticity has firstly been scheduled to determine viscoelasticity by mathematioal analysis of collapse of foam by resonance vibration. However, as a result of this study, an original program has been compelledto change drastically. Consequently, a prototype measuring apparatus has been developed to determine directly a viscoelasticity of foam - surface shearing viscoelasticity and area viscoelasticity - with the aid of a moving coil of an analogue meter. In addition, a discussion has also been made to determine a viscoelasticity of foam in terms of variance if foam surface area and the rate of variance by measuring a difference of pressure between inside and outside of foam with a help of a dynamic film tension meter. To determine a viscoelasticity, a membrane of the foam should be deformed with a force as much as possible to the extent of measurable degree. There is much room left for further improvement.

在泡沫塑料的清洗和染色过程中，泡沫塑料的物理化学行为的研究是非常必要的。然而，目前还没有商业化的测试仪器来准确地确定汽液界面的动力学特性，因此，本研究以一种新的概念为基础，借助电子技术和传感技术开发了一种测试仪器的原型。这些装置包括：(1)泡沫吹气比测量装置，(2)排水速度测量装置，(3)动态粘塑性测量装置，(4)接触角测量装置，(5)动态薄膜张力仪，(6)Biaxiak薄膜拉伸装置，(7)动态润湿剪切应力测量装置，以及其他装置。在最初的研究方案中，首先安排了一种最困难的动态粘弹性测量方法，通过对泡沫通过共振振动坍塌的数学分析来确定粘弹性。然而，作为这项研究的结果，一个原始的程序已经被迫做出了巨大的改变。因此，开发了一种原型测量装置，借助于模拟仪表的移动线圈，直接测定泡沫的粘弹性--表面剪切粘弹性和面粘弹性。此外，还讨论了用动态膜张力仪测量泡沫内外压力差，用泡沫表面积和变化率来确定泡沫的粘弹性。为了确定粘弹性，泡沫薄膜应尽可能地以可测量的程度的力变形。还有很大的改进余地。