and 3 g polyacrylic acid after stirring uniformly add 3 g absolute ethyl alcohol and 2 g deionized water and stir uniformly pellet and dry the obtained mixture so as to obtain a comparative embodiment 2 of granular defoamer test the embodiments of granular defoamer comparative embodiments of granular defoamer and samples of a foreign solid defoamer with the following method testing method add 50 g commercially available powder detergent and 0 3 g solid granular defoamer into a drum type washing machine with 6 kg capacity and test through the standard washing procedures there are 5 measuring settings on the door of the washing machine these settings indicate 0 25 50 75 and 100 of the door height and are denoted as u201c 0 u201d u201c 1 u201d u201c 2 u201d u201c 3 u201d and u201c 4 u201d respectively setting u201c 0 u201d is the start point and indicates u201c no foam u201d while mark u201c 4 u201d indicates u201c full foam u201d record the foam height once every 5 min when the washing machine stops a higher value indicates the foam height in the washing machine is higher and the foam suppression performance is poorer within the same duration a lower foam height indicates the foam suppression performance of the product is better the test result is as follows testing method four measuring settings 0 1 2 and 3 are marked out on the glass test mirror of a horizontal circular bubbling instrument produced by nanjing sixin scientific technological application research institute.