Ngaba i-PET kunye ne-PE ziyafana

Ngaba i-PET kunye ne-PE ziyafana?

I-PET polyethylene terephthalate.

I-PE yi-polyethylene.

I-PE: i-polyethylene
Yenye yezona zinto zixhaphakileyo zisetyenziswa kwipolymer kubomi bemihla ngemihla, kwaye isetyenziswa kakhulu ekwenzeni iingxowa zeplastiki, iifilim zeplastiki, kunye neebhakethi zobisi.
I-Polyethylene iyaxhathisa kwiintlobo ezahlukeneyo ze-solvents eziphilayo kunye nokuhlwa kwee-asidi ezahlukeneyo kunye neziseko, kodwa kungekhona kwii-acids oxidative ezifana ne-nitric acid.I-polyethylene iya kwenza i-oxidize kwindawo ene-oxidizing.
I-polyethylene inokuthathwa njengento ecacileyo kwimeko yefilimu, kodwa xa ikhona ngobuninzi, iya kuba yi-opaque ngenxa yokusabalalisa ukukhanya okunamandla ngenxa yobukho benani elikhulu leekristale kuyo.Iqondo le-polyethylene crystallization lichaphazeleka linani lamasebe, kwaye amasebe amaninzi, kunzima ngakumbi ukuba i-crystallize.Iqondo lokushisa elinyibilikayo lekristale le-polyethylene nalo lichaphazeleka linani lamasebe, ukusuka kwi-90 degrees Celsius ukuya kuma-130 degrees Celsius.Okukhona amasebe amaninzi, kokukhona asezantsi ubushushu bokunyibilika.Iikristale zePolyethylene enye zihlala zilungiswa ngokunyibilikisa i-HDPE kwixylene kumaqondo obushushu angaphezu kwe-130 ngokukaCelsius.

I-PET: i-polyethylene terephthalate
Ipolymer ye-terephthalic acid kunye ne-ethylene glycol.Isishunqulelo sesiNgesi sithi PET, esetyenziswa ikakhulu ekwenzeni i-polyethylene terephthalate fiber.Igama lezorhwebo laseTshayina yipolyester.Olu hlobo lwefayibha lunamandla aphezulu kunye nokusebenza kakuhle kokunxiba kwelaphu layo.Kungokunje lolona didi lunemveliso kakhulu lweentsinga zokwenziwa.Ngo-1980, imveliso yehlabathi yayimalunga ne-5.1 yezigidi zeetoni, ibala i-49% yemveliso yehlabathi ye-synthetic fiber.
Iqondo eliphezulu le-symmetry yesakhiwo se-molecular kunye nokuqina kwe-p-phenylene chain yenza i-polymer ibe neempawu ze-crystallinity ephezulu, ukushisa okuphezulu okunyibilikayo kunye nokungaxutywanga ngokubanzi kwi-solvents eziphilayo.Ubushushu bokunyibilika bungama-257-265 °C;ukuxinana kwayo kwanda kunye Iqondo lokunyuka kwe-crystallinity, ubuninzi besimo se-amorphous yi-1.33 g / cm ^ 3, kwaye ubuninzi befiber yi-1.38-1.41 g / cm ^ 3 ngenxa yokunyuka kwe-crystallinity emva kokwelula.Ukususela kwisifundo se-X-ray, kubalwa ukuba epheleleyo Ubuninzi beekristale yi-1.463 g / cm ^ 3.Ubushushu beglasi benguqu ye-amorphous polymer yayingu-67 ° C;ipholima eyikristale yayingama-81°C.Ukushisa kwe-fusion ye-polymer yi-113-122 J / g, amandla okushisa athile yi-1.1-1.4 J / g.I-Kelvin, i-dielectric constant yi-3.0-3.8, kwaye ukuchasana okuthe ngqo ngu-10 ^ 11 10 ^ 14 ohm.cm.I-PET ayinyibiliki kwizinyibilikisi eziqhelekileyo, inyibilika kuphela kwezinye izinyibilikisi zezinto eziphilayo ezinokonakala ezifana nezinyibilikisi ezixubeneyo zephenol, o-chlorophenol, m-cresol, kunye ne-trifluoroacetic acid.Iifiber zePET zizinzile kwii-asidi ezibuthathaka kunye neziseko.
Ukusetyenziswa Isetyenziswa ikakhulu njengemathiriyeli ekrwada kwiintsinga zokwenziwa.Imicu emifutshane inokudityaniswa nekotoni, uboya, kunye nehemp ukwenza iimpahla zempahla okanye amalaphu okuhombisa angaphakathi;iifilaments zingasetyenziswa njengeentambo zempahla okanye iintambo zemizi-mveliso, ezifana nelaphu lokucoca, iintambo zamatayara, iiparashute, amabhanti okuhambisa, ibhanti lokhuseleko njl.Isitofu esibunjiweyo samalungu angasetyenziswa njengezikhongozeli zokupakisha.

Oomatshini bethu bokupakisha banokuzalisa iibhotile ze-PE kunye ne-PET