36. How to improve gross efficiency? Which chemical raw materials should be used as additives?
Today, knitted fabric factories use a three-in-one pre-treatment additive when coloring pure cotton knitted fabrics and spinning bobbins. The three-in-one additive produced by his factory has been used by many factories and they all say that the gross effect is not good. How to improve the gross efficiency? Which chemical raw materials should be used for three-in-one additives? Answer Three-in-one additives are also called one-dosage additives, boiling and bleaching one-bath additives, and some are equipped with enzymes called scouring enzymes. Therefore, there are many varieties. The 197 boiling and bleaching one-bath auxiliary launched by Qingdao Longta Chemical Co., Ltd. was later copied in various places. The quality of its products varies greatly, and the prices also vary greatly. As far as the author knows, this additive has certain effects when used for pre-treatment of knitted fabrics, spinning yarns, cheese yarns, etc. The raw material composition of three-in-one additives varies. Generally, the raw materials that can be used are: sodium silicate, hydrated sodium metasilicate, layered sodium disilicate, soda ash, soap base, 60% linear alkyl benzene sulfonic acid Sodium (carbon number less than 12), AOS, urea, sodium perborate, sodium percarbonate, sodium sulfite, potassium persulfate, sodium fatty alcohol sulfate, sodium secondary alkyl sulfonate, carboxymethylcellulose, fatty alcohol Sodium polyoxyethylene ether sulfate, sodium alcohol ether carboxylate, alkyl phosphate, tetraacetyl ethylene diamine (TAED), sodium nonanoyl benzene sulfonate (NOBs), organic chelating agent, coconut oil alkyl diethanolamide, isopropyl Structured dodecanol, tridecanol polyoxyethylene ether, etc. However, the raw materials used in each prescription are only part of the above-mentioned raw materials. The properties and functions of various raw materials are also different. Generally, when selecting raw materials, raw materials should be selected reasonably according to the requirements of the customer and combined with the cost. If better whiteness is required and cottonseed hulls need to be completely removed, sodium perborate and sodium sulfite can be added to the prescription. For example, when the pH value is required to be greater than 10.5-11.0 in boiling or bleaching baths, the dosage of alkali agent or alkali-releasing agent and corresponding stabilizer should be appropriately increased in the prescription. If environmentally friendly products are required and phosphorus, nitrogen and APEO are restricted, products such as sodium tripolyphosphate, urea and nonylphenol polyoxyethylene ether among the above raw materials cannot be used. Some factories require three-in-one additives that the dry powder should not agglomerate. When selecting raw materials, powder should be the main ingredient or a small amount of liquid should be used together or spray production should be adopted. If the other party requires a wet powder, consider adding less than 8% liquid surfactant. The three-in-one additive produced by this factory does not have a good gross effect when used. The author believes that the main reason is the lack of surfactants in the prescription of this factory. If the prescription only uses sodium metasilicate, Yuanming powder, sodium tripolyphosphate, etc. If inorganic compounds do not consider the removal of wax and other impurities in cotton fibers during cooking and bleaching, then the wool effect must be very poor. It is recommended to increase the dosage of surfactants (such as SASs0, AOS, etc.) in the three-in-one additives.
AAAVEGTRHYTJ
Disclaimer:
Disclaimer: Some of the texts, pictures, audios, and videos of some articles published on this site are from the Internet and do not represent the views of this site. The copyrights belong to the original authors. If you find that the information reproduced on this website infringes upon your rights, please contact us and we will change or delete it as soon as possible.
AA
