litaba

Moemeli oa ho etsa filimi ke karolo e ka sehloohong ea ho kenella ha fiber ea khalase, ka kakaretso e nka 2% ho isa ho 15% ea karoloana e kholo ea foromo e kenang, karolo ea eona ke ho kopanya fiber ea khalase hore e be dingata, tlhahiso ea ts'ireletso ea likhoele, e le hore li-fiber bundles li be le tekanyo e ntle ea ho satalla, agglomeration, ho fihlela litlhoko tsa ts'ebetso ea khalase. Lisebelisoa tse atisang ho sebelisoa ho etsa lifilimi tse entsoeng ka khalase ea fiber fiber ke li-polymers, tse kenyelletsang li-epoxy resin, polyurethane, polyester, phenolic resin, modified polypropylene dispersions, kapa emulsions. Ts'ebetso ea li-agent tsa ho etsa lifilimi haholo-holo e itšetlehile ka sebopeho sa limolek'hule le boima ba limolek'hule tsa polymer. Bakeng sa moemeli ea tšoanang oa ho etsa lifilimi, ho satalla hafiber ea khalasee ka laoloa ke boima ba limolek'hule tsa moemeli oa ho etsa filimi, 'me moemeli oa ho etsa lifilimi o nang le boima bo phahameng ba molek'hule o tla ba le boima bo phahameng ba fiber ea khalase, e loketseng phekolo ea holim'a metsi.ho matlafatsa lihlahisoa tsa fiber tse entsoeng ka khalase ea thermoplastic, ha moemeli oa ho etsa lifilimi o nang le boima bo tlaase ba limolek'hule o loketse ho hlahisa likhoele tse sebelisetsoang ho phunya le ho hula. Li-polymers tsa epoxy resin li na le lihlopha tsa aliphatic hydroxyl, ether, le epoxy, 'me ho na le khoheli e matla ea lik'hemik'hale pakeng tsa lihlopha tsa polar ka li-epoxy film-forming agents, kahoo li na le phello e ntle ea ho khomarela le ho kopanya likhoele tsa khalase;

Ho feta moo, sehlopha sa epoxy se ka har'a moemeli oa ho etsa filimi ea epoxy se ka sebetsana le sehlopha sa "terminal hydroxyl", "terminal carboxyl group", "terminal amino group", le lihlopha tse ling tse sebetsang ka li-plastiki tsa boenjiniere tse kang PBT, PET, PA, PC, joalo-joalo, ho ntlafatsa matla a ho kopanya sefahleho pakeng tsa fiber ea khalase le resin. Lisebelisoa tsa ho etsa lifilimi tsa polyester li na le lihlopha tse ngata tsa ester, li-unsaturated lik'hemik'hale tsa lik'hemik'hale, le lihlopha tsa hydrophilic ka ketane e kholo, 'me ts'ebetso ea bona e itšetlehile ka mofuta oa acid le joala tse sebelisoang ha ho etsoa polyester le karo-karolelano. Ha botlaaseng resin e unsaturated polyester resin, unsaturated litlamo habeli ka polyester filimi-forming agent ka polymerize le cross-link le litlamo habeli ka botlaaseng resin ho theha e matla lik'hemik'hale tlamo kapa 'mele entanglement, e leng ho ntlafatsa interfacial tlamahano matla. Hangata li-agent tse etsang filimi ea polyester li na le mekhoa e metle ea ho kolobisa le ho phunyeletsa 'me ka hona li sebelisoa e le lisebelisoa tsa ho kolobisa ho pultrusion, winding, spraying, chevron le lihlahisoa tse ling. Polyurethane filimi-forming agent molecular chain e na le ho pheta-pheta sebopeho sa carbamate, ho ba teng ha lihlopha tsena tsa polar ho etsa hore polyurethane ho fiber ea khalase e be le tlamo e ntle haholo, likarolo tsa molek'hule tse bonolo le tse thata tsa motsoako oa elasticity e phahameng le ho hanyetsa abrasion, ka nako e ts'oanang, polyurethane e ka har'a sehlopha sa isocyanate e ka kenngoa ka har'a amino coupling agent, ho ntlafatsa motsoako oa li-amino coupling le ho ntlafatsa motsoako oa matrix. tshebetso yalintho tse entsoeng ka motsoakolihlahisoa.