Sidee Loo Sameeyaa Qaabka Midabka Labba Ah Ee Melamine Powder?

Ujeedada hindisaha hadda waa in la bixiyo hab lagu hagaajinayo waxqabadka processing iyo nolosha alaabta eemelamine-ka budada ahwax soo saarka, kaydinta ilaha, kordhinta midabka alaabta la shubay, iyo hagaajinta kala duwanaanta alaabta la shubay.

Habka diyaarinta waxaa ka mid ah diyaarinta qayb ka mid ah, diyaarinta qaybta B iyo diyaarinta alaabta la dhammeeyey.

Tallaabooyinka diyaarinta qayb ka mid ah

1. Falcelinta: Reactor-ka, resin-ka formaldehyde waxa laga dhigayaa 38% xal formaldehyde saami ahaan, qiimaha pH waxa lagu hagaajiyaa 8.5 ee reactor-ka, ka dibna melamine ayaa lagu daraa qiyaasta falcelinta.Kuleylka ilaa 90 ° C ilaa barta dhamaadka;

2. Kneading: Ka dib marka la qaboojiyo ilaa 70°C, fal-celiyaha geli cajiinka, oo ku dar alwaax fibre iyo midabka A sida waafaqsan saamiga cajiintu.

3. Qalajinta: Ka dib markaad cajiintid, geli foornada si aad u qallajiso.Foornadu waxay qabataa suunka mesh suunka hawo kulul, kaas oo lagu qalajiyey hawo kulul 85 ° C, qoyaanka waxaa lagu xakameynayaa wax ka hooseeya 3.5% si loo helo qalab qallalan.

4. Kubbada shiididda: u dir alaabta la qalajiyey mashiinka kubbadda, ku dar saliidaha, wakiilka daweynta, titanium dioxide iyo pigment wax lagu daro, oo dhammaystir cufnaanta iyo midabka isku midka ah ee kubbadda 9 saacadood;

Tallaabooyinka diyaarinta ee qaybta B

Midabka qaybta B wuu ka duwan yahay qaybta A, laakiin tillaabooyinka diyaarinta waa isku mid.

Diyaarinta badeecada la dhammeeyay: si siman isku dar qaybta A iyo qaybta Bbudada melamine, ka dibna ku xidh bac warqad ah oo filim lagu dahaadhay.Budada dhammaatay waa in lagu kaydiyaa deegaan ka hooseeya 25°C.