Codsiga Darajada Kiimikada Maalinlaha ah ee Hydroxypropyl Methyl Cellulose (HPMC) ee lagu dhaqo

Kiimikada darajada maalinlaha ah ee hydroxypropyl methylcellulose waa polymer synthetic oo laga sameeyay cellulose dabiiciga ah iyada oo loo marayo wax ka beddel kiimikaad. Cellulose ether waa nooc ka mid ah cellulose dabiiciga ah. Wax soo saarka ether-ka cellulose wuu ka duwan yahay polymers-ka synthetic. Maaddada ugu badan ee aasaasiga ah waa cellulose, oo ah ka samaysan polymer dabiici ah. Sababtoo ah gaar ahaan qaab dhismeedka cellulose ee dabiiciga ah, cellulose lafteedu awood uma laha inay ka falceliyaan wakiilada etherification. Si kastaba ha ahaatee, ka dib daaweynta wakiilka bararka, bonds hydrogen xooggan u dhexeeya silsiladaha molecular iyo silsiladaha waa la burburiyaa, iyo sii daynta firfircoon ee kooxda hydroxyl waxay noqotaa cellulose alkali fal-celin ah. Hel ether cellulose.

200,000 viscosity degdeg ah hydroxypropyl methylcellulose ee darajada kiimikada maalinlaha ah waa budo cad ama wax yar oo huruud ah, aan ur lahayn, aan dhadhamin oo aan sun ahayn. Waxaa lagu milmi karaa biyo qabow iyo dareere isku dhafan oo walxaha organic ah si loo sameeyo xal hufan. Dareeraha biyuhu wuxuu leeyahay dhaqdhaqaaqa dusha sare, daahfurnaan sare, xasillooni xoog leh, oo aan saameyn ku yeelan pH marka lagu milmo biyaha. Waxay ku leedahay saamaynta dhumucda iyo barafka ka-hortagga ee shaambooyinka iyo shaambada qubeyska, waxayna leedahay haynta biyaha iyo samaynta aflaanta wanaagsan ee timaha iyo maqaarka. Iyada oo kor u kaca fiiqan ee alaabta ceeriin ee aasaasiga ah, isticmaalka cellulose (daaweeyaha ka-hortagga ka-hortagga) ee shaambada iyo qubeyska ayaa si weyn u yareyn kara kharashka waxayna gaari kartaa saameynta la rabo.

Tilmaamaha iyo faa'iidooyinka kiimikaad maalinlaha ah ee cellulose cellulose:

1. Cuncun hooseeya, heerkulka sare iyo kuwa aan sunta ahayn;

2. Xasilooni qiimaha pH ballaaran, kaas oo hubin kara xasilloonidiisa inta u dhaxaysa qiimaha pH 3-11;

3. Kobcinta qaboojinta;

4. Kordhi xumbo, deji xumbo, hagaaji dareenka maqaarka;

5. Si wax ku ool ah u wanaaji dheecaanka nidaamka.

Baaxadda codsiga maalinlaha ah ee cellulose cellulose kiimikaad:

Loo isticmaalo shaambo, maydhista jidhka, nadiifiyaha wejiga, labeenta, kareemka, jel, toner, timaha qaboojiyaha, alaabta habaynta, dawada cadayga, candhuufta, biyaha xumbo-cayaaraha.

Doorka maalinlaha ah ee fasalka cellulose ee kiimikaad HPMC

Codsiyada la isku qurxiyo, waxaa inta badan loo isticmaalaa dhumucdiisuna, xumbo, emulsification deggan, kala firidhsan, adhesion, hagaajinta filimada-samaynta iyo guryaha haynta biyaha ee la isku qurxiyo, wax soo saarka viscosity sare waxaa loo isticmaalaa dhumucdiisuna, wax soo saarka hoose-viscosity inta badan waxaa loo isticmaalaa ganaax. kala firidhsan iyo samaynta filimada

Tignoolajiyada HPMC ee fasalka cellulose kiimikaad maalinle ah:

Viscosity of hydroxypropyl methylcellulose ku habboon warshadaha kiimikada maalin kasta waa inta badan 100,000, 150,000, iyo 200,000. Marka loo eego qaacidadaada gaarka ah, qadarka wax lagu daro ee alaabta guud ahaan waa 3 ilaa 5/1000