Ukuze kuncitshiswe iindleko zemveliso kwaye kufumaneke ukusebenza okongezelelekileyo,i-thermoplastic ye-polyurethaneIi-elastomers zingasetyenziswa njengee-toughening agents ezisetyenziswa rhoqo ukuqinisa izinto ezahlukeneyo zerabha ze-thermoplastic kunye nerabha eziguquliweyo.
Ngenxa yei-polyurethaneNjengoko iyipolymer enemibala eqaqambileyo, ingahambelana neeresini zemibala eqaqambileyo okanye iirabha, njengaxa isetyenziswa kunye ne-polyethylene ekhlorini (CPE) ukuvelisa iimveliso zonyango; Ukudibanisa ne-ABS kungathatha indawo yokusetyenziswa kweeplastiki ze-thermoplastic zobunjineli; Xa isetyenziswa kunye ne-polycarbonate (PC), ineempawu ezifana nokuxhathisa ioyile, ukuxhathisa ipetroli, kunye nokuxhathisa impembelelo, kwaye ingasetyenziselwa ukwenza imizimba yemoto; Ukuxuba ne-polyester kunokuphucula ukusebenza kwayo kokuqina; Ukongeza, ingahambelana kakuhle ne-polyvinyl chloride, i-polyoxymethylene (POM), okanye i-polyvinylidene chloride; i-polyester polyurethane ingahambelana kakuhle ne-15% nitrile rubber okanye i-40% nitrile rubber/polyvinyl chloride blend rubber; i-polyether polyurethane ingahambelana kakuhle ne-40% nitrile rubber/polyvinyl chloride blend adhesive; ingahambelana kakuhle nee-acrylonitrile styrene (SAN) copolymers; Ingenza isakhiwo senethiwekhi edibanisayo (IPN) kunye nee-polysiloxanes ezisebenzayo. Uninzi lwezincamathelisi ezixutyiweyo ezikhankanyiweyo apha ngasentla sele zenziwe ngokusesikweni.
Kwiminyaka yakutshanje, kuye kwakho uphando oluninzi malunga nokuqina kwe-POMI-TPUeTshayina. Ukudibanisa i-TPU kunye ne-POM akuphuculi nje kuphela ukumelana nobushushu obuphezulu kunye neempawu zoomatshini ze-TPU, kodwa kukwaqinisa kakhulu i-POM. Abanye abaphandi babonise ukuba kwiimvavanyo zokuqhekeka okuxineneyo, xa kuthelekiswa ne-POM matrix, ii-POM alloys ezongeziweyo ze-TPU zidlula kwinguqu ukusuka kwi-brittle fracture ukuya kwi-ductile fracture. Ukongezwa kwe-TPU kukwanika i-POM ukusebenza kwememori yesimo. Ummandla we-crystalline we-POM usebenza njengesigaba esimiselweyo se-shape memory alloy, ngelixa ummandla ongenamomorphous we-TPU kunye ne-POM ongenamomorphous usebenza njengesigaba esiguqukayo. Xa ubushushu bokuphendula kokubuyisela buyi-165 ℃ kwaye ixesha lokubuyisela liyi-120 s, izinga lokubuyisela le-alloy lifikelela ngaphezulu kwe-95%, kwaye isiphumo sokubuyisela singcono kakhulu.
I-TPU kunzima ukuyihambelana nezinto ze-polymer ezingezizo ze-polar ezifana ne-polyethylene, i-polypropylene, irabha ye-ethylene propylene, irabha ye-butadiene, irabha ye-isoprene, okanye i-waste rubber powder, kwaye ayinakuvelisa izinto ezidityanisiweyo ngokusebenza kakuhle. Ke ngoko, iindlela zonyango lomphezulu ezifana ne-plasma, i-corona discharge, i-wet chemistry, i-primer, i-flame, okanye iigesi ezisabelayo zihlala zisetyenziswa kule yokugqibela. Umzekelo, iimveliso zomoya zaseMelika kunye neenkampani zeekhemikhali zinokuphucula kakhulu i-bending modulus, amandla okutsalwa, kunye nokumelana nokuguguleka kwe-polyethylene fine powder enobunzima be-molecular obuyi-3-5 yezigidi emva konyango lomphezulu wegesi esebenzayo ye-F2/O2, kwaye iyongezwe kwi-polyurethane elastomers ngomlinganiselo we-10%. Ngaphezu koko, unyango lomphezulu wegesi esebenzayo ye-F2/O2 lunokusetyenziswa kwiifayibha ezimfutshane ezinde ezijoliswe kubude be-6-35mm ezikhankanywe apha ngasentla, ezinokuphucula ukuqina kunye nokuqina kokukrazuka kwezinto ezidityanisiweyo.
Ixesha leposi: Jan-19-2024