Analysis Of The Molding Process For Door and Window Sealant

E le karolo ea bohlokoa ea thepa ea ho tiisa ea moaho, mokhoa oa ho bopa oa li-sealant tsa mamati le lifensetere o ama ka kotloloho ho khomarela sehlahisoa, ho hanyetsa boemo ba leholimo le thepa ea ho tiisa. Mokhoa oa saense oa ho bopa ha o ntlafatse boleng ba sekoti feela empa hape o netefatsa botsitso ba nako e telele- libakeng tse fapaneng.

 

Ts'ebetso ea ho bopa bakeng sa li-sealants tsa menyako le lifensetere e na le mehato e mene ea bohlokoa: ho kopanya thepa e tala, ho lokisoa ha thepa ea motheo, ho hasana ho eketsehileng, le ho bōpa ho qetela. Ntlha ea pele, polymer ea motheo (e kang silicone, polyurethane, kapa acrylate), li-fillers (tse kang calcium carbonate, carbon black), le li-additives (tse kang li-plasticizers le crosslinkers) li lekanngoa ka nepo ho latela litlhoko tsa ho etsoa. Ts'ebetso ea ho kopanya e tlameha ho etsoa ka mokhoa o phahameng-oa ho qhalakanya ka lebelo ho netefatsa kabo e ts'oanang ea likarolo le ho qoba liphapang tsa tikoloho tse amang ts'ebetso.

Nakong ea mohato oa ho lokisa lisebelisoa tsa motheo, polymer e ba le karabelo ea lik'hemik'hale kapa liphetoho tsa 'mele ho fihlela thepa e lakatsehang ea viscoelastic le ea ho folisa. Ka mohlala, li-silicone sealants hangata li sebelisa platinum-catalyzed condensation reaction to crosslink linear polymers hore e be sebopeho sa marang-rang, kahoo ho etsa lera le tiisang. Phallo ea li-additives e bohlokoa haholo. Ho hasana ho sa tloaelehang ha li-nanoscale fillers ho ka lebisa khatellong ea maikutlo sebakeng sa heno, ho fokotsa nako e telele ea sealant.

Mekhoa ea ho qetela ea ho etsa e kenyelletsa extrusion, molding, kapa ente ea ente. Hangata li-sealants tsa menyako le lifensetere li hlahisoa ho sebelisoa mokhoa o tsoelang pele oa extrusion, moo screw extruder e hatellang sekhomaretsi hore e be likhoele tse tšoanang, tse ntan'o pholile ebe li tiisa ho beha sebopeho. Li-sealant tse ling tse khethehileng{{2}e ka 'na tsa e-ba compression-ho lumellana le litlhoko tsa ho tiisa manonyeletso a nang le sebōpeho se sa tloaelehang.

The sealant e entsoeng e boetse e kena vulcanization kapa phekolo ho finyella thepa ea eona ea ho qetela ea mochine. Ka mohlala, li-silicone sealants tsa mocheso oa kamoreng vulcanizing (RTV) li phekola mongobo o tsoang moeeng, ha li-component tse peli-li-polyurethane sealants li phekola kapele ka mor'a ho tsoakana.

Ka kakaretso, mokhoa oa ho theha li-sealant tsa mamati le lifensetere ke motsoako o felletseng oa mahlale a thepa, boenjiniere ba lik'hemik'hale le theknoloji ea tlhahiso. Ho ntlafatsa maemo a ts'ebetso ho bohlokoa bakeng sa ho ntlafatsa ts'ebetso ea ho tiisa le ho aha matla a matla.