Antimicrobial anti-aging refrigerator door sealing strip and preparation method thereof
A refrigerator door, anti-aging technology, used in the chemical industry, household refrigeration equipment, lighting and heating equipment, etc., can solve the problems of low mechanical strength, deformation, bacteria, mold and harmful microorganisms of refrigerator door seals
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Embodiment 1
[0025] 1. Raw material preparation:
[0026] ①Preparation of nano-loess: collect a certain amount of loess and put it into a muffle furnace, calcinate at 500°C for 0.5h, cool it and grind it into a fine powder of 150 mesh, add a hydrochloric acid solution with a concentration of 0.5-25wt% that is 12 times the weight of the fine powder , stirred and reacted at 65°C for 2h, then added an appropriate amount of 25wt% sodium hydroxide solution to adjust the pH value to neutral, stirred at room temperature for 1.5h, filtered, and the filter cake was washed 3 times with deionized water, at 100°C Dried under blast, ground to a particle size of 1200 mesh, to obtain white nano-loess;
[0027] ②Preparation of Impatiens, wild chrysanthemum, orchid herb extracts: Collect non-rotten Impatiens, wild chrysanthemums, and orchid herbs, wash them separately, dry them, crush them into 25-mesh coarse powder, and pour them into corresponding extraction tanks , then add 9 times the weight of coarse...
Embodiment 2
[0035] 1. Raw material preparation:
[0036] ①Preparation of nano-loess: collect a certain amount of loess and put it into a muffle furnace, calcinate at 350°C for 2 hours, grind it into a fine powder of 120 mesh after cooling, add a hydrochloric acid solution with a concentration of 0.5-25 wt% 10 times the weight of the fine powder, Stir and react at 75°C for 1.5h, then add an appropriate amount of 25wt% sodium hydroxide solution to adjust the pH value to neutral, stir and react at room temperature for 1.5h, filter, wash the filter cake twice with deionized water, Dried under blast, ground to a particle size of 1000 mesh, to obtain white nano-loess;
[0037] ②Preparation of Impatiens, wild chrysanthemum, orchid herb extracts: collect non-rotten Impatiens, wild chrysanthemums, and orchid herbs, wash them separately, dry them, crush them into 35-mesh coarse powder, and pour them into corresponding extraction tanks Add 12 times the weight of the coarse powder in distilled water...
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