Calcium propionate This product is a white crystalline powder with no odor or slight special odor. It is soluble in water (1 g is soluble in 3 ml of water), slightly soluble in methanol and ethanol, and insoluble in benzene and acetone. The pH of the 10% aqueous solution is equal to 7.4. Calcium propionate has an inhibitory effect on mold and has no inhibitory effect on yeast. It is an acid anti-mold agent, which is effective in the acidic range. When the pH value is below 5, the inhibition effect on mold is better. When the pH value is 6, the antibacterial ability is significantly reduced. The general addition amount is 0.25% to 0.4%. According to the test, the anti-mildew effect of sodium diacetate is obviously better than that of propionate products. At present, traditional anti-fungal agents generally have poor palatability, while sodium diacetate tastes sweet and sour, can mask the unpleasant smell of various synthetic drugs and various additives in the feed, has good taste, can enhance animal appetite and increase feed intake. Sodium diacetate is added to the feed to significantly increase its nutritional value. Sodium diacetate is a weak acid salt, and the pH of the 10% aqueous solution is 5.5-6.5, which can promote the activity of various enzymes in the biological intestinal tract and improve the digestion and absorption rate of the animal. It can be used as a buffering agent to regulate the pH value in the intestine of animals, infiltrate and destroy the fungal cell wall, kill and inhibit harmful fungi in the intestinal tract of animals, thereby playing a role in disease resistance and disease prevention. Dimethyl fumarate This product is white flake or powder crystal, slightly spicy, slightly soluble in water, soluble in ethanol. It is a new type of antiseptic and antifungal agent, with high antivirus, broad spectrum antibacterial and safe. Good chemical stability and long duration of action. The amount added in the feed is about 0.05%. Sorbic acid (potassium) Sorbic acid (potassium) can effectively inhibit the activity of mold, yeast and aerobic bacteria, and also prevent the growth and reproduction of harmful microorganisms such as botulinum, staphylococcus and salmonella, but anaerobic spores. The beneficial microorganisms such as bacteria and Lactobacillus acidophilus are almost ineffective. Sorbic acid (potassium) is an acidic preservative and still has a good preservative effect in a near neutral (pH 6 to 6.5) environment. It can be directly added, sprayed, dipped, and sprayed dry during use.
Drum brush is divided into long hair, medium hair, short hair three kinds, its performance is the length of the drum brush hair, rather than the thickness and length of the drum itself, brush hair is usually divided into wool and chemical fiber two kinds.
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Different rollers will brush different effects, long hair rollers will brush out some fine texture, concave and convex feeling, similar to the texture effect. The paint surface after short wool roller besmear is more uniform, smooth, without concave and convex feeling, in the wool is between the two.
Roller brush is mostly made of wool and foam plastic, which can be divided into paint drum brush, hair drawing drum brush, floor paint drum brush, flat coating drum brush, etc., mainly used for large-area paint rolling in architectural decoration engineering. And can be used for coating and rolling all kinds of paint, such as: latex paint, anti-rust paint, internal and external wall paint, wallpaper glue, etc.
Note:
The use of drum brush as long as the straight brush can be wiped, if you want to daub evenly, the drum is best in the paint bucket to be fully absorbed, and then take out a few rolling on the inclined plane, press out the excess paint and then begin to brush the wall.
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