Phetoho ea 'mele ea Polypropylene
Ho eketsa ditlatsetso tsa tlhaho kapa tse sa pheleng ho matrix ya PP ( polypropylene ) nakong ya tshebetso ya ho kopanya le ho kopanya ho fumana thepa e kopaneng ya PP e sebetsang hantle. Mekhoa e meholo e kenyelletsa phetoho ya ho tlatsa le phetoho ya ho kopanya.
Ho tlatsa phetoho
Ts'ebetsong ea ho bopa PP, li-fillers tse kang silicates, calcium carbonate, silica, cellulose, le likhoele tsa khalase li kenngoa ho polymer ho ntlafatsa ho hanyetsa mocheso, ho fokotsa litšenyehelo, ho eketsa ho tiea, le ho fokotsa ho fokotseha ha PP. Leha ho le joalo, matla a tšusumetso le bolelele ba PP li tla fokotseha. Fiber ea khalase, joalo ka whisker e ntle ka ho fetesisa e se nang tšepe, e na le theko e tlase, e thibelang mocheso hantle, e thibelang kutu, le matla a phahameng a mochini. E sebelisoa haholo, mme ts'ebetso ea PP e fetotsoeng ka ho tlatsoa ha fiber ea khalase e ntlafalitsoe haholo. Leha ho le joalo, ha likhalase tsa fiber li fihla hoo e ka bang 30%, thepa ea mochine ea thepa e ka ntlafatsoa haholo. Keketso e feteletseng ea fiber ea khalase e ka fella ka ho se kenyellelitsoe ho lekaneng ha likhoele tse ling tsa khalase, e leng se lebisang ts'ebetsong e mpe ea tlamahano lipakeng tsa matrix a polymer le likhoele tsa khalase, e leng ho bakang ho fokotseha ha matla a mochini oa thepa e kopaneng. Ho feta moo, ha likhalase tsa fiber li ntse li eketseha, phallo ea thepa e kopantsoeng ea fokotseha, e lebisang mathateng a ho bopa le ho sebetsa ha PP.
Phetoho ea ho kopanya
Ho kopanya PP (polypropylene) le polyethylene, polasetiki ea boenjiniere, li-elastomer tsa thermoplastic kapa rabara ho ntlafatsa ts'ebetso ea PP. Phetoho ea ho kopanya e phetheloa lisebelisoa tsa ho sebetsa tse kang li-mixer tse ka hare, li-mill tse bulehileng, le li-extruder. Ts'ebetso e bonolo ho e laola, e na le potoloho e khuts'oane ea tlhahiso, le litšenyehelo tse tlase, 'me e ka ntlafatsa thepa e fapaneng ea PP joalo ka colorability, processability, antistatic properties, le impact resistance. Motsoako oa polymer o ka sebelisa ka botlalo likarolo tse hlahelletseng tsa karolo ka 'ngoe, oa etsa mefokolo ea thepa ea karolo ka 'ngoe, 'me oa ntlafatsa haholo ts'ebetso e felletseng ea motsoako. Leha ho le joalo, khanyetso ea mocheso o tlase le khanyetso ea botsofali ea PP e kopantsoeng e ntse e sa loka. Nakong ea phetoho ea ho kopanya, matla a ho kuta a ka etsa hore liketane tse ling tse kholo tsa limolek'hule li khaoloe 'me li thehe li-radicals tsa mahala, tse ka etsang li-graft kapa thibela li-copolymers' me ka katleho li sebetse e le li-compatibilizers bakeng sa PP.
Theknoloji ea phetoho ea PP e atolositse haholo lefapha la ts'ebeliso ea lisebelisoa tse kopantsoeng le ho ntlafatsa ts'ebetso ea theko e tlase ea lihlahisoa, e khothalelitse ts'ebetso ea boenjiniere ea PP, mme e atolositse mefuta ea ts'ebeliso ea eona ho tloha ho lipolasetiki tse akaretsang ho isa ho lipolasetiki tsa boenjiniere. Lilemong tsa morao tjena, lipatlisiso le nts'etsopele ea theknoloji ea ho fetola PP e tsoetse pele ka potlako, 'me ho sebelisitsoe theknoloji e ncha ho fetola PP, e ntlafalitseng haholo ts'ebetso e pharaletseng ea PP le ho tsoela pele ho atolosa tšimo ea eona ea ts'ebeliso, ka tebello e pharaletseng ea tsoelo-pele.
Phetoho ea matlafatso
Ho kenyelletsa lisebelisoa tsa fiber ho polasetiki ho ka ntlafatsa haholo matla a thepa ea polasetiki, ka hona lebitso la ntlafatso ea lebitso. Lisebelisoa tse nang le tekanyo e kholo ea bophara-ho-botenya li ka ntlafatsa haholo modulus ea ho khumama (ho tiea) ea thepa ea polasetiki, eo hape e ka bitsoang phetoho ea matlafatso.
Lisebelisoa tse matlafatsang tse sebelisoang haholo ho ntlafatso ea PP (polypropylene) ke fiber ea khalase le lihlahisoa tsa eona, hammoho le carbon fiber, organic fiber, fiber ea boron, litelu, joalo-joalo Har'a tsona, likhoele tsa khalase tse sebelisoang ka khalase ea fiber e matlafalitsoeng ke PP ke hangata likhoele tsa khalase tse se nang alkali le likhoele tsa khalase tse mahareng tsa alkali, tse nang le likhoele tsa khalase tse senang alkali tse nang le palo e kholo ka ho fetisisa. Bophara ba likhalase tsa khalase bo laoloa ka har'a 6-15μm, 'me bolelele ba likhalase tsa khalase bo tlameha ho tiisetsoa hore bo ka ba ka hare ho 0.25-0.76mm, e ka netefatsang ts'ebetso ea sehlahisoa le ho etsa hore likhalase tsa khalase li qhalane hantle.
Ka kakaretso ho lumeloa hore bolelele ba likhoele tsa khalase ka sehlahisoa se lokela ho ba kholo ho feta 0.2mm ho ba le phello ea phetoho. Likahare tsa fiber ea khalase (karolo ea boima) li molemo ka ho fetisisa pakeng tsa 10% le 30%, 'me ts'ebetso e fokotseha ha e feta 40%. Ntle le moo, ho kenyelletsa li-organosilane coupling agents ho ka etsa likhoele tsa khalase le PP ho theha sebopeho se setle, ho ntlafatsa modulus e kobehang, ho thatafala, mocheso oa deformation ea mojaro, mme haholo botsitso ba sebopeho sa sistimi e kopaneng. Glass fiber e matlafalitsoeng PP e ka ntlafatsa matla a mochini le ho hanyetsa mocheso, 'me ho hanyetsa ha eona mouoane oa metsi, ho bola ha lik'hemik'hale, le ho fofa le tsona li ntle. E ka sebelisoa e le lipolasetiki tsa boenjiniere maemong a mangata, joalo ka li-blade tsa fan, li-grille tsa heater, li-impellers, li-lampshades, libono tsa motlakase, le matlo a futhumatsang, joalo-joalo.
Le hoja tlhahiso ea polypropylene e ntse e eketseha ka potlako, ts'ebetso ea eona e boetse e ntlafala kamehla, ho etsa hore bophara ba kopo ea eona le botebo bo fetohe kamehla. Lilemong tsa morao tjena, mefuta e meng e mecha ea polypropylene e nang le thepa e ikhethang e hlahile, joalo ka polypropylene e hlakileng le polypropylene e matla haholo, ebang ke ka ntlafatso ea karabelo ea polymerization kapa mehato e nkiloeng nakong ea granulation ka mor'a polymerization.
