PP polypropylene
Mofuta o tloaelehileng oa lisebelisoa:
Indasteri ea likoloi (haholo-holo e sebelisa PP e nang le lisebelisoa tsa tšepe: li-mudguards, li-ducts tsa moea, li-fan, joalo-joalo), lisebelisoa (li-liner tsa mamati a hlatsoang lijana, li-dryer ventilation ducts, liforeimi le likoahelo tsa mochini o hlatsoang, lithapo tsa mamati a sehatsetsi, joalo-joalo), Japane Sebelisa thepa ea bareki ( mohloa le thepa ea lirapa tse kang
Lisebelisoa tsa mohloa le li-sprinklers, joalo-joalo).
Maemo a tšebetso ea ente ea hlobo:
Kalafo ea ho omisa: Haeba e bolokiloe hantle, ha ho hlokahale phekolo ea ho omisa.
Mocheso o qhibilihang: 220 ~ 275 ℃, ela hloko hore o se ke oa feta 275 ℃.
Mocheso oa hlobo: 40 ~ 80 ℃, 50 ℃ e khothalletsoa.Tekanyo ea crystallization e khethoa haholo ke mocheso oa hlobo.
Khatello ea ente: ho fihla ho 1800bar.
Lebelo la ente: Ka kakaretso, tšebeliso ea ente ea lebelo le phahameng e ka fokotsa khatello ea ka hare ho bonyane.Haeba ho na le mefokolo holim'a sehlahisoa, ente ea lebelo le tlase mocheso o phahameng o lokela ho sebelisoa.
Limathi le liheke: Bakeng sa limathi tse batang, sebaka se tloaelehileng sa bophara ba semathi ke 4 ~ 7mm.E kgothaletswa ho sebelisa sedikadikwe ente koung le semathi.Mefuta eohle ea liheke e ka sebelisoa.Bophara ba heke bo tloaelehileng bo tloha ho 1 ho isa ho 1.5mm, empa liheke tse nyane joalo ka 0.7mm le tsona li ka sebelisoa.Bakeng sa liheke tse ka thōko, botebo bo fokolang ba heke bo lokela ho ba halofo ea botenya ba lebota;bonyane bophara ba heke e lokela ho ba bonyane habeli botenya ba lebota.Lisebelisoa tsa PP li ka sebelisa sistimi ea semathi se chesang.
Lik'hemik'hale le 'mele:
PP ke thepa ea semi-crystalline.E thata ho feta PE mme e na le sebaka se phahameng sa ho qhibiliha.Kaha homopolymer PP e brittle haholo ha mocheso o phahame ho feta 0 ° C, lisebelisoa tse ngata tsa khoebo tsa PP ke li-copolymers tse sa reroang tse nang le 1 ho 4% ea ethylene kapa clamp copolymers tse nang le ethylene e phahameng.Thepa ea Copolymer PP e na le mocheso o fokolang oa mocheso (100 ° C), pepenene e tlase, botlolo bo tlase, bo tiileng bo tlase, empa bo na le tšusumetso e matla.Matla a PP a eketseha ka ho eketseha ha litaba tsa ethylene.Thempereichara e bonolo ea Vicat ea PP ke 150 ° C.Ka lebaka la kristale e phahameng, ho tiea ha holimo le ho hanyetsa ho hanyetsa ha thepa ena ho molemo haholo.PP ha e na bothata ba ho senyeha ha khatello ea tikoloho.Hangata, PP e fetoloa ka ho eketsa fiber ea khalase, li-additives tsa tšepe kapa rabara ea thermoplastic.Sekhahla sa phallo ea MFR ea PP e tloha ho 1 ho ea ho 40. Lisebelisoa tsa PP tse nang le MFR e tlaase li na le khanyetso e ntle ea tšusumetso empa matla a tlaase a ho lelefatsa.Bakeng sa lisebelisoa tse nang le MFR e tšoanang, matla a mofuta oa copolymer a phahame ho feta a mofuta oa homopolymer.Ka lebaka la kristale, sekhahla sa ho honyeha ha PP se phahame haholo, ka kakaretso ke 1.8 ~ 2.5%.'Me ho tšoana ha tataiso ea shrinkage ho molemo haholo ho feta ea PE-HD le lisebelisoa tse ling.Ho eketsa 30% ea lisebelisoa tsa khalase ho ka fokotsa ho fokotseha ho isa ho 0.7%.Ka bobeli lisebelisoa tsa homopolymer le copolymer PP li na le ho monya ha mongobo hantle, acid le alkali corrosion resistance, le ho hanyetsa ho qhibiliha.Leha ho le joalo, ha e na khanyetso ho li-hydrocarbon tse nkhang hamonate (tse kang benzene) solvents, chlorinated hydrocarbons (carbon tetrachloride) solvents, joalo-joalo PP ha e na khanyetso ea oxidation mocheso o phahameng joaloka PE.

Ea ronalikhaba tsa polasetiki, li-tubes tsa liteko tsa polasetiki, li-inhalers tsa nkole lihlahisoa tse ling tse kopanang le 'mele oa motho li sebelisa thepa ea PP.Re na le lisebelisoa tsa PP tsa sehlopha sa bongaka le lisebelisoa tsa PP tsa sehlopha sa lijo.Hobane lisebelisoa tsa PP ha li na chefo.