Ingabe i-PET ne-PE Kuyafana

Ingabe i-PET ne-PE Kuyafana?

I-PET polyethylene terephthalate.

I-PE iyi-polyethylene.

I-PE: i-polyethylene
Ingenye yezinto ezisetshenziswa kakhulu ze-polymer ekuphileni kwansuku zonke, futhi isetshenziswa kakhulu ekwenzeni izikhwama zepulasitiki, amafilimu epulasitiki, namabhakede obisi.
I-Polyethylene imelana nezinyibilikisi ezihlukahlukene eziphilayo kanye nokugqwala kwama-acids ahlukahlukene nezisekelo, kodwa hhayi kuma-acid oxidative njenge-nitric acid.I-polyethylene izokhipha i-oxidize endaweni ene-oxidizing.
I-polyethylene ingabhekwa njengento esobala esimweni sefilimu, kodwa uma ikhona ngobuningi, izoba yi-opaque ngenxa yokuhlakazeka kokukhanya okunamandla ngenxa yokuba khona kwenani elikhulu lamakristalu kuyo.Izinga le-polyethylene crystallization lithintwa inani lamagatsha, futhi amagatsha amaningi, kuba nzima nakakhulu ukucwebezela.Izinga lokushisa elincibilikayo le-crystal ye-polyethylene nalo liyathinteka ngenani lamagatsha, kusukela ku-90 degrees Celsius kuya ku-130 degrees Celsius.Uma amagatsha engeziwe, izinga lokushisa elincibilikayo liyancipha.Amakristalu e-polyethylene eyodwa ngokuvamile angalungiswa ngokuncibilikisa i-HDPE ku-xylene emazingeni okushisa angaphezu kuka-130 degrees Celsius.

I-PET: i-polyethylene terephthalate
I-polymer ye-terephthalic acid ne-ethylene glycol.Isifinyezo sesiNgisi sithi PET, esisetshenziswa kakhulu ekwenzeni i-polyethylene terephthalate fiber.Igama lokuhweba laseShayina yi-polyester.Lolu hlobo lwefayibha lunamandla aphezulu nokusebenza kahle kokugqoka kwendwangu yalo.Njengamanje iwuhlobo olukhiqiza kakhulu lwemicu yokwenziwa.Ngo-1980, umkhiqizo womhlaba wawucishe ube ngamathani ayizigidi ezi-5.1, okubalelwa ku-49% wesamba somkhiqizo wefayibha yokwenziwa emhlabeni.
Izinga eliphezulu le-symmetry yesakhiwo samangqamuzana kanye nokuqina kweketanga le-p-phenylene kwenza i-polymer ibe nezici ze-crystallinity ephezulu, izinga lokushisa eliphezulu lokuncibilika futhi lingancibiliki kuma-solvents e-organic jikelele.Izinga lokushisa elincibilikayo lingu-257-265 °C;ukuminyana kwayo kuyanda ngezinga le-crystallinity liyakhula, ukuminyana kwesimo se-amorphous yi-1.33 g/cm^3, kanti ukuminyana kwefiber kungu-1.38-1.41 g/cm^3 ngenxa yokwanda kwekristalu ngemuva kokwelula.Kusukela ocwaningweni lwe-X-ray, kubalwa ukuthi okuphelele Ukuminyana kwamakristalu kungu-1.463 g/cm^3.Izinga lokushisa lokushintsha kwengilazi le-amorphous polymer lalingu-67°C;i-polymer ecwebezelayo yayingu-81°C.Ukushisa kokuhlanganiswa kwe-polymer kungu-113-122 J/g, umthamo wokushisa othize ngu-1.1-1.4 J/g.I-Kelvin, i-dielectric constant ingu-3.0-3.8, futhi ukumelana okuqondile ngu-10^11 10^14 ohm.cm.I-PET ayincibiliki ezincibilikisini ezivamile, incibilika kuphela kwezinye izinyibilikisi zezinto eziphilayo ezigqwala kakhulu njengezincibilikisi ezixubile ze-phenol, o-chlorophenol, m-cresol, ne-trifluoroacetic acid.Imicu ye-PET izinzile kuma-asidi abuthakathaka nezisekelo.
Isicelo Isetshenziswa kakhulu njengezinto ezingavuthiwe zemicu yokwenziwa.Imicu emifushane ingahlanganiswa nekotini, uvolo, kanye ne-hemp ukwenza izindwangu zezingubo noma izindwangu zokuhlobisa kwangaphakathi;imicu ingasetshenziswa njengezintambo zokugqoka noma izintambo zezimboni, njengezindwangu zokuhlunga, izintambo zamasondo, ama-parachute, amabhande okuthutha, ibhande lokuphepha njll. Ifilimu ingasetshenziswa njengesisekelo sefilimu e-photosensitive kanye ne-audio tape.Izingxenye ezibunjwe ngomjovo zingasetshenziswa njengeziqukathi zokupakisha.

Imishini yethu yokupakisha ingagcwalisa amabhodlela e-PE nawe-PET