Method for rapidly detecting cellulose-ether anti-mold performance

Abstract

The invention relates to a method for rapidly detecting the cellulose-ether anti-mold performance. The method includes the following steps that (1) cellulose powder is put into distilled water, the mixture is stirred, the cellulose is fully suspended, and standing is carried out till supernatant is completely clarified; (2) a to-be-detected cellulose-ether sample is dried, then a solution is prepared with distilled water, the constant temperature is kept in a constant temperature groove, and the initial viscosity is detected through a viscosity meter; (3) a cellulose solution is movably taken into a to-be-detected cellulose-ether solution, timing and stirring are carried out, an enzyme solution is evenly dispersed, large bubbles do not exist in the solution, the viscosity is detected, time is recorded, the viscosity is detected once every 30 s to 60 s, operating is repeated till the viscosity is reduced to be below 200 cps to 300 cps, or operating is stopped after 10 min to 15 min. According to the method, detection is carried out in the mode that cellulose ether is cut through cellulose, the anti-enzyme capacity of the cellulose ether can be rapidly detected, the detection period is quite short, the detection accuracy is high, the production efficiency and the annual yield are guaranteed, and the basis is provided for large-scale production.

Description

technical field [0001] The invention relates to a method for detecting the anti-mold performance of cellulose ether, in particular to a method for rapidly detecting the anti-mold performance of cellulose ether. Background technique [0002] As a thickener, cellulose ether is widely used in building materials, oil exploration, water-based paints, daily chemicals, personal care, food and medicine. As a natural polymer, cellulose ether is easily degraded by microorganisms and loses viscosity. Especially in the paint industry, the viscosity stability of cellulose ether is the most important indicator. In the prior art, manufacturers of water-based coatings mix different brands of cellulose ethers into glue or coatings and place them for several months to observe the change in viscosity to determine the stability of cellulose ethers, that is, the enzyme resistance. However, the test method for the mildew resistance of this type of cellulose ether has a long cycle, which affects...

AI Technical Summary

Problems solved by technology

However, the test method for the anti-mold performance of this type of cellulose ether has a long cycle, which affects the production efficiency and annual production volume, and the test results have large errors, which is not conducive to large-scale production.

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