Method and device for testing foam properties

Abstract

The invention relates to methods for testing foam properties. The methods include an antifoaming property testing method and a defoaming property testing method. The two testing methods comprise the following steps: (1) adding 800-1200ml of liquid to be tested to a transparent test tube with inner diameter of 20-100mm and capacity of 2200-3500ml in advance; (2) vertically injecting the liquid to be tested downwards at a flow rate of 2-12L/min at the height 30-80cm distant from the level of the liquid in the step (1) to generate foams and at the same time, the liquid to be tested flowing out from the bottom of the test tube at the same rate; and taking the amount of the generated foams and the generation time of the foams as well as the subsequent defoaming time as the corresponding parameters. The invention also relates to a device for testing foam properties. The methods and the device have the following beneficial effects: various errors generated by manual operation can be avoided; and the methods and the device not only are suitable for evaluating the defoaming effects of the defoamers for working fluid under various temperature but also can be used for evaluating the antifoaming effects of various systems to which the defoamers are not added and the inspection methods of the defoaming properties of other water-based products (such as washing agents and the like).

Description

technical field [0001] The invention relates to the technical field of foam testing, in particular to a foam performance testing method and a corresponding testing device. Background technique [0002] Foam and foam are common phenomena in people's daily life and chemical production, but few people know about foam and foam, and a mature, complete and unified theoretical system of foam has not yet been formed. In the industry, people pay more and more attention to how to better utilize and eliminate foam, which is particularly urgent in the metalworking fluid industry, especially in water-based metalworking fluids, because the existence of foam can affect the cooling, rust prevention, lubrication, etc. of the working fluid. The performance will cause damage, and it will also bring pressure to the machine tool environment, such as machine tool blockage, foam overflow tank, etc., in addition, it will also cause ineffective loss of defoamers and cutting fluids. Therefore, foam ...

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Problems solved by technology

However, this method has the following disadvantages: (1) Due to the deviation of human operation, it will inevitably introduce systematic errors; (2) This test method has the disadvantage of poor repeatability; (3) It cannot simulate the actual operation of the factory. Dynamic process; (4) can only display the foam data of the final state, but cannot display the dynamic data of the foam; (5) cannot reflect the relationship between defoaming performance and temperature; (6) cannot test the anti-foaming effect; (7) measure The stand

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