Menene albarkatun ƙasa na HPMC?

Hydroxypyl methylcelose (hpmc) polymer mai ban sha'awa tare da kewayon aikace-aikacen daban-daban a cikin masana'antu daban daban, gini, abinci, abinci, abinci, abinci, abinci da kayan kwaskwarima. Abubuwan da aka yi amfani da su a cikin samar da HPMC sun fito ne daga albarkatun halitta da sabuntawa.

HPMC wani yanki ne na semisyy na semisynt na selulose, poly ne na halitta polymer a cikin bangon tantanin jikin. Kayan albarkatun da HPMC sun hada da cellulose da propylelene opse. An bayyana albarkatun ƙasa da tsarin gyara bayani dalla-dalla a ƙasa:

1. Cellopose:

Source: Babban kayan albarkatun hpmc na HPMC na Cellose ne, wanda aka fitar dashi daga ɓangaren litattafan almara ko zare naudu. Jikoki itace shine mafi yawan hanyar da aka saba saboda yawan ta da inganci.
Rabarwa: rabuwa da sel daga albarkatun kasa ta amfani da hanyoyin sarrafa sunadarai daban-daban. Ana kula da ƙwallon ƙafa na katako don cire ƙazanta da kuma cire ƙwallon ƙwallon zane.

2. Propylene oxide:

Source: Propylelene opide wani abu ne mai mahimmanci na roba hpmc kuma an samo asali ne daga propylene, an sami mai da aka samu lokacin girbin mai.
Production: Propylene yawan oxide yawanci ana samar da shi ta hanyar wani sinadarai da ake kira chlorohydrins ko epoxiDation. A cikin wannan tsari, propylene ya amsa da chlorine ko hydrogen peroxide don samar da propylene oxide.

3.

EThertification: Tsarin HPMC ya ƙunshi gaggafa mai gaggafa tare da propylene opse. Wannan tsari kuma ana kiranta Methypyl, wanda aka gabatar da kungiyoyin Hydroxypyl a cikin Kobbin Cellulose.
Aikin alkali: kula da selulose tare da alkali (yawanci sodium hydroxide) don kunna kungiyoyin hydroxyl. Wannan ya sa su kara iya aiki yayin halayen masu biyo baya tare da opylelene oxide.

4. Matsayi na methylation:

Gudanarwa: sarrafa mataki na methylation (DS) yayin amsawa don cimma burin da ake so na HPMC. Matsayin canzawa yana shafar ƙima, danko, da sauran kaddarorin samfurin ƙarshe.
Hydroxypoyation:

Dauki: Pellulose ɗin da aka yiwa kunnawa ya amsa tare da propylelene opridle a ƙarƙashin yanayin sarrafawa. Wannan yana haifar da musayar ƙungiyoyi na hydroxypyl tare da sarkar sel.
Zazzabi da matsin lamba: sarrafa yanayi na bincike, gami da matsi da matsin lamba, don tabbatar da ingancin tsari da ingancin samfurin.

5. NUNA DA KYAUTA:

A acid nakealization: bayan amsawar, samfurin yana hana tare da acid don cire wannan tushe.
Wanke: An wanke HPMC don cire ƙazanta, kayan da ba a haɗa ba, da samfuran samfuran. Wannan matakin yana da mahimmanci a sami samfurin ƙarshe na ƙarshe.

6. Drying:

Cire na ruwa: Mataki na ƙarshe shine bushe HPMC don cire duk wani danshi. Wannan nau'in HPMC a cikin tsari na foda, wanda za'a iya ci gaba da aiwatar da amfani da amfani dashi a aikace-aikace iri-iri.

Raw kayan na HPMC galibi sun haɗa da celululose da aka samo daga ɓangaren litattafan almara ko zare na auduga da propylene opylene daga procylene. Tsarin aikin ya hada da methylation, hydroxypropylation, wankewa da bushewa, da yanayin da aka yi amfani da su a hankali don samo kayan da ake so na polymer. HPMC ta maimaitawa daga tsarin sunadarai na musamman, yana sanya shi kayan masarufi a cikin samfuran samfurori daban-daban.