Xanthan Gum Test Njira

1. Skuyesa kokwanira

Tengani chitsanzo cha 1 g, pang'onopang'ono kutsanulira mu beaker yomwe ili ndi madzi 100 ml, kwa mphindi 15, samalani kuyika chipwirikiti m'madzi, pang'onopang'ono mutsegule blender kuti ifulumizitse 200 r / min, imatha kusungunuka pakatha mphindi 25, malinga ndi njira yomwe ili pamwambayi kuti zitsanzo sizisungunuka mu ethanol, acetone kapena ethyl ether.

2. Gel experiment

Onjezani 300 ml madzi mu beaker 500 ml, preheat ku 80 ℃, tsegulani blender kuti ifulumizitse 200r / min,Kuyambitsa ndi kuwonjezera 1.5g youma nyemba ndi 1.5g dzombe beangum.pamene osakaniza mu njira, Pitirizani kusonkhezera kuposa mphindi 30.(kutentha kwamadzi sikotsika kuposa 60 ℃ panthawi yogwedeza). Lekani kugwedeza, kuziziritsa osachepera 2 hours kutentha kwa firiji, kutentha kumachepa mu 40 ℃, kupanga mankhwala a gel. chitsanzo njira Mosiyana, musawonjezere dzombe chingamu, popanda guluu.

3.mamasukidwe akayendedwe

3.1 Tiye chida 

Brook field rotational viscometer viscosity mita kapena magwiridwe ena ofanana.

3.2Tchikhalidwe

a) Mtundu wa rotor: 3

b) Kuthamanga kwa rotor: 60 r / min

c) Kuyeza kutentha:24 ℃ ~ 25 ℃

3.3 Njira zowunikira

3.3.1 Kukonzekera yankho lomwe lili ndi 1% chitsanzo ndi 1% potaziyamu kolorayidi.

a) Ndi pepala loyera, lowuma lolemera motsatana malinga ndi zitsanzo za 1.5 g ndi potaziyamu chloride (zolondola mpaka 0,01 g), zosakanikirana;

b)Kuyeza 300 ml ya madzi osungunuka mu beaker 400 ml

c) Tengani beaker pamwambapa ndi madzi pansi pa blender, tsegulani blender, yambitsani jekeseni wosakaniza pang'onopang'ono mumadzi osakaniza ndi pakati pa galasi lamadzi, ndikuyamba nthawi, 800 r / min kwa maola awiri, oyambitsa kutentha kwa 24 ℃ ~ 25 ℃;

d) Siyani kusonkhezera, kutenga chikho, ndi chipwirikiti kapena zinthu zina zofananira mmwamba-ndi-pansi njira kangapo.

3.3.2 Kutsimikiza

Tengani kuchuluka kwa 1% yankho lachitsanzo ndi 1% potaziyamu kolorayidi yankho, kuyika mu beaker yamtundu wa 100 ml, kutsimikiza mumikhalidwe yolamula.

4.Miyezo yamphamvu ya shear

4.1 Njira yotsimikizira

Malingana ndi sitepe 3, motsatira kukhuthala kwa liwiro la 3 rotor mpaka 6 r / min ndi 60 r / min,

4.2 Zotsatira za kuwerengera

Mphamvu za shear zowerengedwa ndi mtundu (1) :

N=η1/η2 ……………………… (1)

Mtundu:

N - mtengo wogwira ntchito;

η1 - kukhuthala kwa mtengo ndi liwiro la 6 r/min, unit for centipoise (cP);

η2- kukhuthala kwa mtengo ndi liwiro la 60 r/min, unit for centipoise (cP);

5.Kuwuma kuwonda

5.1 Mfundo

Chitsanzo kuyanika kuti zonse kulemera pansi pa chikhalidwe cha kutentha, kuwerengera anataya zakuthupi khalidwe.

5.2 Chida

a) Kulemera kwa botolo lagalasi: mkati mwake 60 ~ 70 mm, m'munsi mwake ndi 35 mm.

b) Kutentha kwamagetsi kosasintha kutentha kowumitsa uvuni

5.3 Njira zowunikira

Ikani botolo lolemera pa 105 ℃ + 1 ℃ ng'anjo youma kwa mphindi 30, kulemera kosalekeza. botolo loyezera,Katundu woyezera botolo ndikuliyika mu uvuni,Tsegulani kapu ndi zisoti za botolo mu uvuni,Kuyanika pansi pa 105 ℃ + 1 ℃ kwa maola 2,Tsegulani uvuni,Phimbani botolo loyezera ndi chitsanzo nthawi yomweyo,Kuzizira mpaka kutentha mkati chowumitsira, Kulemera kosalekeza, Malinga ndi kuchepetsa khalidwe ndi zitsanzo kuchuluka kuwerengera youma weightlessness.

5.4 Zotsatira za kuwerengera

Kuwuma kagawo kakang'ono ka kulemera kowerengedwa ndi mtundu (2):

X=[(m1-m2)/m]×100………………………(2)

Mtundu:

X - kagawo kakang'ono kowuma kopanda kulemera,%;

m1 - The quility wa masekeli botolo ndi chitsanzo pamaso kuyanika , unit ndi gramu (g);

m2 - The quility wa kuyeza botolo ndi chitsanzo pambuyo kuyanika, unit ndi gramu (g);

m - khalidwe la chitsanzo, unit ndi gramu (g).