Membrane uniformity detection method and device
A detection method and detection device technology, which is applied in the direction of color/spectral characteristic measurement, etc., can solve the problems that the diaphragm yield cannot be guaranteed, and the uniformity and distribution of the internal stress and structure of the material cannot be reflected, and the film yield rate can be improved. Improvement of film yield and the effect of increasing film yield
Inactive Publication Date: 2014-01-01
BENQ MATERIALS WUHU CORP
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[0003] At present, the thickness of the diaphragm is the main detection object in the detection methods of the uniformity of the diaphragm, and the most common detection methods for measuring the thickness are infrared rays, X-rays and β-rays, but the above-mentioned test methods can only understand the uniformity of the thickness. It cannot reflect the uniformity and distribution of the internal stress and structure of the material during the processing process; the extended pore formation of the diaphragm is strongly related to the internal stress and microstructure of the forebody membrane, and this test method cannot guarantee the yield of the diaphragm
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[0020] The specific implementation manner of the present invention will be described in further detail below by describing the best embodiment with reference to the accompanying drawings.
[0021] Such as figure 1 and figure 2 As shown, the diaphragm uniformity detection device includes polarizers arranged on both sides of the diaphragm 1, the polarizers are divided into an upper polarizer 2 and a lower polarizer 3, and the polarizer arranged on one side of the diaphragm 1 (ie, the lower polarizer 3) A light source 4 is provided on the outside.
[0022] A CCD image sensor 5 connected to a processor is provided outside the polarizer (ie, the upper polarizer 2 ) on the other side of the diaphragm 1 . After the processor reads the color information collected by the CCD image sensor 5, it analyzes, compares and judges with the internal pre-stored set value, so as to determine the degree of uniformity of the diaphragm.
[0023] The included angle between the direction of the op...
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Abstract
The invention discloses a membrane uniformity detection method and device. According to the membrane uniformity detection method, two polarizing plates are placed on two sides of a membrane respectively, a light source is placed outside one polarizing plate, and light generated by the light source irradiates the membrane through the polarizing plate and is emitted through the other polarizing plate; the uniformity of the membrane is judged according to color distribution of the light emitted through the membrane. The membrane uniformity detection comprises the polarizing plates arranged on the two sides of the membrane, and the light source is arranged outside the polarizing plate on one side of the membrane. According to the membrane uniformity detection method and device, the interior uniformity of the membrane is judged through the membrane uniformity detection result so as to further adjust the process and improve finished membrane rate.
Description
technical field [0001] The invention relates to the field of diaphragm detection, in particular to a diaphragm uniformity detection method and a detection device thereof. Background technique [0002] The production process of the dry separator is mainly film extrusion, heat treatment, and stretching pore-forming. The film before stretching pore-forming is called the precursor film. The precursor film can be extruded film, laminated film, composite film and heat treatment film. The film uniformity of the precursor film has a very direct relationship with the uniformity after stretching and pore making. This uniformity has an impact on the overall characteristics of the diaphragm thickness, internal stress, and microstructure. Therefore, when the front-end production process can be optimally controlled, the uniformity of the subsequent production process will be relatively improved. [0003] At present, the thickness of the diaphragm is the main detection object in the detec...
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IPC IPC(8): G01N21/25
Inventor 陈信维
Owner BENQ MATERIALS WUHU CORP