Cotton fiber viscosity determination method Rotor ring spindle test method Composite fabric information

The rotor ring spindle testing method is a mechanical testing method developed by the Bremen Institute in West Germany. It is based on the spinning process and is tested by simulating the operation of equipment in a spinning mill. This method is to use the rotor ring spinning method to run the cotton sample (2~4g) on ​​two printing drums for 5 minutes at a spinning speed of 25m/min at normal temperature. Any sticky components (honeydew spots) in the cotton sample will stick to the drum during rotation. At the end of the test, use tweezers to remove the deposit and weigh it. This method is only suitable for serious honeydew contamination. This method is time-consuming, and it takes 1 to 2 hours to test a cotton sample.
Cotton is a bulk cash crop related to my country’s national economy and people’s livelihood, and an important industrial raw material. With the continuous advancement of textile industry technology, sticky index requirements have been put forward for cotton. At present, our country mainly uses chemical methods (Benedict method, salicylic acid method, anthrone method, Bremen method, potassium iron hydride method) to test the sugar content of cotton. The sugar content of cotton tested by chemical methods includes both endogenous sugar and Includes exogenous sugars. In practice, the direct cause of the “three-winding” phenomenon caused by cotton stickiness is exogenous sugar rather than endogenous sugar. In other words, the chemical method to test the sugar content of cotton has little correlation with the actual spinning process. Therefore, there is an urgent need to use mechanical methods to directly test the stickiness of cotton.
Mechanical methods mainly include hot plate inspection method, micro carding machine method and holy card viscosity tester method. Among them, the micro-carding machine method and the hot plate test method reflect the technology and calculation method of cotton stickiness, which have large errors and are highly subjective. Moreover, because the sample inspection volume of one test is too small (about 10g), they cannot reflect the stickiness of a batch of cotton. sexual situation. The SST type holy card viscosity tester also has the above shortcomings. The SST-1 detector uses computer technology to classify test samples more accurately and objectively. However, this method does not reflect the relationship between cotton sugar concentration and cotton viscosity.
Therefore, we abandoned chemical methods and turned to mechanical methods to obtain obvious sticky cotton honeydew spots, and combined with fast and accurate measurement technology, image processing and analysis technology to process data and obtain indicator analysis results and a series of high-tech Means are the technical route for future development.
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