HEC don Detergent

HEC Hydroxyethyl cellulose fari ne zuwa kodadde rawaya fibrous ko foda mai ƙarfi. Mara guba, mara daɗi. Yana da ether nonionic cellulose, mai narkewa a cikin sanyi da ruwan zafi saboda hydrophilic hydroxyethyl a cikin kwayoyin halitta. Maganin ruwan sa yana da ƙimar pH na 6.5 ~ 8.5 kuma yana da kwanciyar hankali don zafi. HEC yana da solubility daban-daban bisa ga matakin maye gurbin (DS). Maras narkewa a cikin mafi yawan kaushi na halitta. Yana da kaddarorin thickening, dakatarwa, mannewa, emulsification, watsawa da riƙewar danshi, da sauransu, kuma yana iya shirya mafita tare da jeri daban-daban na danko. Yana da ingantaccen narkewar gishiri da ba a saba gani ba ga dielectric, kuma an ba da izinin maganin ruwa ya ƙunshi babban taro na gishiri kuma ya kasance baya canzawa.

Hydroxyethyl cellulose HECsamar da albarkatun kasa

Babban kayan albarkatun kasa: cellulose na birni (auduga ko ƙananan ɓangaren litattafan almara), alkali ruwa, ethylene oxide, ethylene diron (40%)

Tsarin fiber Alkali shine polymer na halitta, kowane zoben fiber ya ƙunshi ƙungiyoyin hydroxyl guda uku, mafi yawan aikin hydroxyl don samar da hydroxyethyl cellulose. Sai a jika danyen auduga ko kuma tsaftataccen abincin abinci a cikin alkali 30% na ruwa na tsawon rabin sa'a sai a danna shi. Murkusa zuwa 1: 2.8 lokuta na ruwan alkaline, sannan murkushe. Ana saka alkali cellulose da aka niƙasa a cikin tukunyar amsawa, a rufe, a shafe shi, an cika shi da nitrogen, a sake maimaita shi kuma a cika shi da nitrogen don maye gurbin iska a cikin akwati. The pre-sanyi ethylene oxide ruwa da aka manna a cikin reactor jacket tare da sanyaya ruwa, da kuma dauki da aka sarrafa a game da 25C for 2h don samun hydroxyethyl fiber na USB danye samfurin. Danyen kayayyakin da barasa za a wanke, ƙara acetic acid neutralization zuwa VLL 46, jean ƙara glioxal crosslinking tsufa. Sa'an nan a wanke da ruwa, centrifugal dehydration, bushewa, nika, hydroxyethyl cellulose.

1.1 alkali ruwa

Samfurin tsaftar ruwa ne mara launi. Dangantaka mai yawa 2. 130, wurin narkewa 318.4C, wurin tafasa 1390C. Caustic soda a kasuwa yana da yanayin sake zagayowar. Kuma ruwa iri biyu: tsantsa m caustic soda fari, flake, block, granular da sanda siffar, cytoplasm: tsantsa ruwa caustic soda kira Liquid alkali, marar launi m ruwa. Kayayyakin masana'antu sun ƙunshi ƙazanta, galibi sodium chloride da sodium carbonate, wani lokacin kuma ɗan ƙaramin ƙarfe.

1.2 ethylene oxide

Ethylene oxide wani fili ne na kwayoyin halitta, dabarar sinadarai C2H40, carcinogen ne mai guba. Epoxy cane yana da ƙonewa kuma yana fashewa, ba shi da sauƙi don jigilar kaya a kan dogon nesa, don haka akwai yanki mai karfi. Ana amfani da shi sosai wajen wanke-wanke, magunguna, bugu da rini. 3 oxyethane (E0) shine mafi sauƙi ether zobe, nasa ne na heterocyclic mahadi, wani muhimmin samfurin petrochemical. Ethylene oxide ruwa ne mai bayyana launi mara launi a ƙananan zafin jiki da kuma iskar gas mara launi mai ƙamshin ƙamshin ƙafafu a cikin ɗaki. Matsin tururi na iskar gas yana da girma kuma yana iya kaiwa 141kPa a 30C. Wannan babban tururi matsa lamba kayyade karfi shigar azzakari cikin farji na epoxy z.alkane lokacin tururi. Matsayin narkewa (C): -112.2. Dangantaka yawa (ruwa -1): 0.8711

1.3 glyoxal

Yellow ribbed ko ba bisa ka'ida ba, yana juya fari akan sanyaya.

Hydroxyethyl celluloseAbubuwan da aka bayar na HECtsari

Sakaauduga ma'auni ko mai ladabi ɓangaren litattafan almara a cikin 30% lye. Cire kuma latsa. Daga nan sai a nika shi a mayar da shi da ethylene oxide da aka riga aka sanyaya don samar da danyen hydroxyethyl cellulose. Sannan a wanke da barasa sannan a zuba acetic acid don wankewa da kashe shi. Sannan ƙara glioxal crosslinking tsufa, saurin wankewa da ruwa. A ƙarshe, bayan centrifugation dehydration, bushewa da nika, gamaHECsamfurin yana samuwa.

Hanya don samar da ƙananan ashHEChydroxyethyl cellulose ta ci gaba da aikin wankewa yana cikin filin fasaha na kayan. Matsalolin fasaha da za a warware shi ne don samar da tsarin wankewa mai ci gaba tare da ingantaccen samar da kayan aiki, ƙananan hasara na kayan wankewa da kayan aiki da ƙananan farashi don samar da ƙananan ash.HEChydroxyethyl cellulose. Hanyar ci gaba da aikin wankewa don samar da ƙananan ashHEChydroxyethyl cellulose yana halin a cikin matakai masu zuwa: A, danye hydroxyethyl cellulose da crosslinking wakili gauraye, crosslinking magani don samun slurry A; B. Ƙara sauran ƙarfi na wanki zuwa slurry A da aka samu a mataki A don samun slurry B; C. Ƙara slurry C da aka samu a mataki na B a cikin rotary matsa lamba centrifuge da samun low ash hydroxyethyl cellulose bayan ci gaba da wanka. Hanyar na iya inganta ingantaccen aiki sosai, inganta haɓakar asarar sauran ƙarfi da kayan wankewa, da rage yawan toka na samfurin, wanda ya cancanci yaɗawa da aikace-aikace.