I have a few questions for fellow sailors
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I work with vinyl acetate glue and have encountered a problem; I’m seeking advice from fellow enthusiasts. 1. When I drop a drop of the organic solvent butanone, used to dissolve vinyl acetate, on newspaper, the paper gets wet immediately. 2. When I drop a drop of the dissolved vinyl acetate glue on newspaper, the paper does not get wet. 3. After diluting the vinyl acetate glue with butanone (it remains sticky), when I drop a drop on newspaper, the paper gets wet again. What is the principle behind this entire process? The effect I want to achieve is that when a diluted amount of vinyl acetate glue is dropped on newspaper, the paper should not get wet. What should I do? This post was last edited by zxh6267 on 2009-4-7 at 22:29
I found that when I tried to hold it myself, the paper got wet; first, it wouldn’t stick properly, and second, after staying still for a day it separated into layers – with the solvent on top and the glue at the bottom
That expert can help me solve this problem; you can also send me a text message at 13301633631, Li
Place a new piece of canvas on the water, and it won’t get wet for days； Place a piece of new canvas in water with a surfactant added (such as detergent), and it quickly becomes wet and sinks. Writing on cloth with a brush dipped in ink is not smooth; by adding a surfactant (which can also be detergent) to the ink, writing becomes very smooth when used. These are all due to the addition of surfactants, which alters the surface tension of the solution and greatly enhances its penetration ability. Glue has a high surface tension; as a result, it does not wet paper easily. By adding lower-molecular-weight compounds, the surface tension of the system decreases, increasing its permeability and making it easier for it to penetrate the paper.
Thank you for the helpful answer from above. I would like to ask: are there any surfactants that can prevent the diluent from wetting the paper when it is added to the glue? It seems that increasing surface tension would help, but this cannot be done by adding substances to the diluent (as the manufacturer does it themselves); it has to be solved by adjusting the properties of the glue itself