Aqoonta aasaasiga ah ee budada polymer-ka ee la firdhiyo

1. fikradda aasaasiga ah

Budada polymer dib loo cusboonaysiin karowaa waxa ugu muhiimsan ee lagu daro budada qalalan ee hoobiye diyaarsan oo la isku daray sida sibidhka ama gypsum-ku salaysan.

Budada cinjirka dib loo cusboonaysiin karo waa emulsion polymer ah oo la buufiyay oo la isku daray laga soo bilaabo 2um bilawga si ay u sameeyaan qaybo wareegsan oo ah 80 ~ 120um. Sababtoo ah dusha sare ee qaybaha waxaa lagu dahaadhay budo aan organic ahayn, qaab-dhismeed adag oo adkaysi u leh, waxaan helnaa budada polymer qalalan. Aad bay u fududahay in lagu shubo iyo bac lagu kaydiyo bakhaarada. Marka budada lagu qaso biyo, sibidh ama maadada gypsum-ku salaysan, dib ayaa loo kala diri karaa, qaybaha asaasiga ah (2um) ee ku jira waxay dib u samayn doonaan xaalad u dhiganta cinjirka asalka ah, sidaas darteed waxaa loo yaqaannaa budada cinjirka dib loo cusboonaysiin karo.

Waxay leedahay dib u kala firdhisanaan wanaagsan, waxay dib u kala firdhisaa emulsion marka la taabto biyaha, waxayna leedahay sifooyin kiimikaad oo la mid ah tan emulsion-kii asalka ahaa. Marka lagu daro budada polymer-ka ee kala firdhisan ee sibidhka ku salaysan ama gypsum-ku salaysan budo qallalan oo diyaarsan oo la isku daray, sifooyinka kala duwan ee hoobiye ayaa la wanaajin karaa, sida:

Hagaajinta ku dheggan iyo isku xidhka hoobiye;

Yaree nuugista biyaha ee maaddada iyo moodooyinka laastikada ee maaddada;

Xoog dabacsanaan, caabbinta saamaynta, caabbinta naaxinta iyo adkeysiga alaabta xoojinta;

Hagaajinta waxqabadka dhismaha ee agabka, iwm.

2. Noocyada budada polymer ee la firdhiyo

Waqtigan xaadirka ah, codsiyada ugu muhiimsan ee suuqa ayaa loo qaybin karaa kala firdhiso cinjirka:

Vinyl acetate iyo budada caagga ah ee ethylene copolymer (Vac / E), ethylene iyo vinyl chloride iyo vinyl laurate ternary copolymer budada caagga ah (E/Vc/VL), vinyl acetate iyo ethylene iyo dufanka sare ee vinyl ester terpolymerization budada Rubber (Vac/E/) VeoVa), vinyl acetate iyo dufanka sare ee vinyl ester copolymer budada caagga ah (Vac/VeoVa), acrylate iyo styrene copolymer budada caagga ah (A/S), vinyl acetate iyo acrylate iyo dufan sare Vinyl ester terpolymer budada caagga ah (Vac/A/). VeoVa), budada caagga ah ee vinyl acetate homopolymer (PVac), styrene iyo butadiene copolymer budada caagga ah (SBR), iwm.

3. Halabuurka budada polymer la firdhiyo

Budada polymer-ka ee la firdhiyo badanaa waa budo cad, laakiin qaar ayaa leh midabyo kale. Waxyaabaha ay ka kooban tahay waxaa ka mid ah:

Xabagta Polymer: Waxay ku taal qaybta udub-dhexaadka ah ee qaybaha budada caagga ah, sidoo kale waa qaybta ugu muhiimsan ee budada polymer ee dib loo cusboonaysiin karo.

Isku-darka (gudaha): wada jir xabagta, waxay ka ciyaartaa doorka wax ka beddelka xabagta.

Wax-qabadyada (dibadda): Qalab dheeri ah ayaa lagu daraa si loo sii ballaariyo waxqabadka budada polymer-ka ee la firdhiyo.

Kolloid difaac: lakabka walxaha hydrophilic oo lagu duuduubay dusha sare ee walxaha budada cinjirka ah ee dib loo kala firdhi karo, kolloid difaac ee budada cinjirka ee dib loo cusboonaysiin karo waa alkolada polyvinyl.

Ka-hortagga-caking-ka: buuxinta macdanta khafiifka ah, oo inta badan loo isticmaalo si looga hortago in budada caagga ah ay roojiso inta lagu jiro kaydinta iyo gaadiidka iyo si loo fududeeyo socodka budada caagga ah (ka daadinta bacaha waraaqaha ama booyadaha).

4. Doorka budada polymer ee la kala firdhi karo ee hoobiye

Budada cinjirka ah ee dib loo cusboonaysiin karo ayaa lagu kala firdhiyaa filim waxayna u shaqeysaa sidii wakiil xoojin ah sida xabagta labaad;

Colloid-ka difaaca ayaa nuugaya habka hoobiye (ma baabi'in doonaan biyo ka dib sameynta filimka, ama "kala firdhinta labaad");

Rinjiga polymer-ka ee filimku wuxuu u qaybsan yahay dhammaan nidaamka hoobiye sida walxaha xoojinta, taas oo kordhinaysa isku-xidhka hoobiye;

5. Doorka budada polymer-ka ee la firdhi karo ee hoobiye qoyan:

Hagaajinta waxqabadka dhismaha;

Hagaajinta guryaha socodka;

Kordhi thixotropy iyo caabbinta sag;

hagaajinta isku duubnida;