Momwe Mungapangire Ufa Wamtundu Wawiri wa Melamine?

Cholinga cha zomwe zapezedwa pano ndikupereka njira yopititsira patsogolo ntchito komanso moyo wazinthu zamelamine kuumba ufamankhwala, kupulumutsa chuma, kuonjezera mtundu wa zinthu kuumbidwa, ndi kuwongolera zosiyanasiyana zopangidwa kuumbidwa.

Njira yokonzekera imaphatikizapo kukonzekera chigawo A, kukonzekera chigawo cha B ndi kukonzekera komaliza.

A chigawo masitepe kukonzekera

1. Zomwe zimachitika: Mu riyakitala, utomoni wa formaldehyde umapangidwa kukhala yankho la 38% la formaldehyde molingana, ndipo pH mtengo umasinthidwa kukhala 8.5 mu reactor, ndiyeno melamine imawonjezeredwa molingana ndi zomwe zimachitika.Kutentha mpaka 90 ° C mpaka kumapeto;

2. Kukanda: Mukazizira mpaka 70 ° C, ikani reactant mu kneader, ndi kuwonjezera nkhuni zamkati ulusi ndi pigment A molingana ndi kukanda.

3. Kuyanika: Mukakanda, lowetsani uvuni kuti muwumitse.Uvuni umatenga ma mesh lamba wotentha mpweya wotentha, womwe umawumitsidwa mumlengalenga wotentha pa 85 ° C, ndipo chinyezi chimayendetsedwa pansi pa 3.5% kuti mupeze zouma.

4. Mpira mphero: tumizani zouma zouma ku mphero ya mpira, onjezerani mafuta, machiritso, titaniyamu dioxide ndi pigment A zowonjezera muyeso, ndipo malizitsani kachulukidwe ndi kufananitsa mtundu ndi mphero mu maola 9;

Kukonzekera masitepe a chigawo B

Mtundu wa chigawo B ndi wosiyana ndi chigawo A, koma njira zokonzekera ndizofanana.

Kukonzekera komaliza: Sakanizani gawo A ndi gawo Bmelamine ufa, ndiyeno muwanyamule m’thumba lapepala lokhala ndi filimu.Ufa womalizidwa uyenera kusungidwa m'malo osachepera 25 ° C.