1.mōkai kapiawhakataki
PET ingoa matū Polyethylene terephthalate, e mohiotia ana ano he polyester, tauira matū COC6H4COOCH2CH2O.I whakaritea te Dihydroxyethyl terephthalate ma te whakawhiti i te dimethyl terephthalate me te ethylene glycol, te esterification ranei o te terephthalate me te ethylene glycol, katahi ka tauhohenga polycondensation.He polyester kukū tioata, he miraka ma, he kowhai marama ranei, he polymer tino tioata me te mata maeneene me te kanapa.He kapia noa i roto i te oranga ka taea te wehewehe ki APET, RPET me PETG.

Ko te PET he miraka ma, he kowhai marama ranei, he polymer tino tioata me te mata maeneene, kanapa.He tino pai nga ahuatanga o te tinana me te miihini i roto i te whānuitanga o te whānuitanga o te pāmahana, te roa o te whakamahi i te pāmahana tae atu ki te 120 ℃, te pai o te whakamaarama hiko, ahakoa i te teitei o te pāmahana me te auau teitei, he pai tonu ona ahuatanga hiko, engari he ngoikore te aukati corona, he aukati ngokingoki, te atete te rohirohi, te atete waku, te pumau o te ahu he tino pai.PET he here hākawa, ka puta te pirau i raro i te mahi o te waikawa kaha, kawakore kaha me te mamaoa wai, ātete ki whakarewa organic, ātete huarere pai.

2.resin āhuatanga
He pai te atete o te ngokingoki a te PET, te atete ngenge, te aukati waku me te pumau o te ahu, te kakahu iti me te tino pakeke, me te uaua nui rawa atu i roto i nga thermoplastics: he pai te mahi whakamaarama hiko, he iti te awe o te pāmahana, engari he kino te parenga corona.Kore-paitini, he parenga huarere, he pai te pumau ki nga matū, he iti te whakauru o te wai, he aukati ki nga waikawa ngoikore me nga whakarewa waro, engari kaua e rukuhia te wai whakawera, ehara i te parenga alkali.

PET kapiahe nui te pāmahana whakawhiti karaihe, he puhoi te tere whakapatitiotanga, he roa te hurihanga hangai, he roa te hurihanga hangai, he nui te heke o te hanga, he ngoikore te ahua o te ahua, he pakarukaru te hanga, he iti te wera.

Na roto i te whakapai ake o nga kaikawe karihi me nga kaikawe tioata me te whakapakari i te muka karaihe, kei a PET nga ahuatanga e whai ake nei hei taapiri atu ki nga taonga o te PBT.
1. Ko te wera o te werawera me te roanga o te whakamahinga mo te wa roa ko te mea teitei rawa atu i roto i nga kirihou miihini whanui.
2. Na te kaha o te wera o te wera, ka whakauruhia te PET whakarei mo te 10S i roto i te pati kaukau i te 250 ° C, tata ki te kore he rereke, he rereke ranei, he mea tino pai mo te whakarite i nga waahanga hiko me te hiko mo te whakapiri.
3. Ko te kaha piko he 200MPa, ko te modulus elastic he 4000MPa, he tino pai te parenga ngokingoki me te ngenge, he tiketike te pakeke o te mata, he rite nga ahuatanga miihini ki nga kirihou thermosetting.
4. I te mea ko te utu o te ethylene glycol e whakamahia ana ki te hanga PET he tata ki te haurua o te butanediol i whakamahia i roto i te hanga PBT, ko te PET resin me te PET whakakaha te utu iti rawa i waenga i nga kirihou miihini me te utu nui o te utu.

Hei whakapai ake i nga taonga PET, ka taea te whakakotahi i te PET ki te PC, elastomer, PBT, akomanga PS, ABS, PA.
Ko te PET (te whakarei ake i te PET) te nuinga o te tukatuka ma te werohanga, me etahi atu tikanga ko te whakawhitinga, te pupuhi pupuhi, te whakakikorua me te whakapiri, te hiri, te miihini, te whakakikorua me etahi atu tikanga tukatuka tuarua.Me tino whakamaroke i mua i te hanga.

Ka whakaritea te polyethylene terephthalate ma te whakawhiti i te dimethyl terephthalate me te ethylene glycol, te esterification ranei o te terephthalate me te ethylene glycol, katahi ka tauhohenga polycondensation.He polyester kukū tioata, ko te taumaha ngota ngota toharite (2-3)×104, ko te ōwehenga o te taumaha toharite ki te tau toharite o te taumaha ngota ko te 1.5-1.8.

Te pāmahana whakawhiti karāhe 80 ℃, Martin ātete wera 80 ℃, pāmahana deformation waiariki 98 ℃(1.82MPa), pāmahana pirau 353 ℃.He pai rawa nga ahuatanga miihini.Rigidity teitei.He pakeke teitei, he iti te urunga o te wai, he pai te pumau o te taha.He pai te pakari, te atete paanga, te atete waku, te ngokingoki.He pai te parenga matū, ka whakarewahia i te cresol, te waikawa pungatara, te nitrobenzene, te waikawa trichloroacetic, te chlorophenol, te wairewa i te mewaro, te waihano, te acetone, te alkane.Te pāmahana whakahaere -100 ~ 120 ℃.Te kaha piko 148-310MPa
Te mimiti wai 0.06%-0.129%
Te kaha o te paanga 66.1-128J /m
Rockwell pakeke M 90-95
Whakaroa 1.8%-2.7%

3. hangarau tukatuka
Ko te tukatuka PET ka taea te werohanga, te tangohanga, te pupuhi pupuhi, te whakakikorua, te honohono, te miihini, te hiko, te whakakikorua koura, te tuhi.E rua nga momo e whai ake nei.
1. Wāhanga werohanga ① tautuhinga pāmahana: pupuha: 280 ~ 295 ℃, mua 270 ~ 275 ℃, waenganui forging 265 ~ 275 ℃, i muri i 250-270 ℃;tere tīwiri 50 ~ 100rpm, pokepokea ai pāmahana 30 ~ 85 ℃, amorphous pokepokea ai ko 70 ℃, pēhanga hoki 5-15KG.② Te whakamaroke whakamaoritanga whakamatautau, te pāmahana ngongo rauemi 240 ~ 280 ℃, te pehanga werohanga 500 ~ 1400 ℃, te pāmahana werohanga 260 ~ 280 ℃, te whakamaroke pāmahana 120 ~ 140 ℃, tango 2 ~ 5 haora.
2. I roto i te atamira kiriata, ka tapatapahia te kapia PET ka whakamaroke i mua i te whakamaroke ki te aukati i te hydrolysis, katahi ka tukuna te pepa matotoru amorphous i roto i te extruder i te 280 ° C na roto i te T-mold, a ka tineia te pahū whakamahana, whakamatao ranei ki te pupuri i roto i te ahua amorphous mo te tensile takotoranga.Ko te pepa matotoru ka totoro takirua e te tenter hei hanga kiriata PET.

Ko te toronga roa ko te whakamahana i te pepa matotoru ki te 86 ~ 87 ℃, a, i tenei pāmahana, ka toro atu ki te 3 nga wa i te taha o te toronga o te papa rererangi matotoru, kia taea ai e tana tuunga te whakapai ake i te tohu o te tioata kia eke ki te teitei ake o te pāmahana: te 98 ~ 100 ℃ te whakamahana o mua, te pāmahana tensile o 100 ~ 120 ℃, te tauwehenga tensile o 2.5 ~ 4.0, me te pāmahana tautuhinga waiariki o 230 ~ 240 ℃.Ko te kiriata i muri i te toronga poutū me te whakapae me whai ahua wera ki te whakakore i te huringa o te kiriata na te toronga me te hanga kiriata me te pai o te waiariki.