Gene yog dab tsiral Cov khoom ntawm Polyethylene Resin

Noobral Cov khoom ntawm Polyethylene Resin

Polyethylene resin yog cov tsis muaj tshuaj lom, tsis muaj ntxhiab tsw dawb hmoov los yog granule, milky dawb nyob rau hauv tsos, nrog ib tug zoo li wax zoo li, thiab tsis tshua muaj dej nqus, tsawg dua 0.01%. Cov yeeb yaj kiab polyethylene yog pob tshab thiab txo qis nrog kev nce crystallinity. Cov yeeb yaj kiab polyethylene muaj cov dej tsis tshua muaj permeability tab sis huab cua permeability siab, uas tsis haum rau kev ntim khoom tshiab tab sis tsim nyog rau cov khoom ntim dej noo. Nws yog flammable, nrog cov pa ntsuas ntawm 17.4, cov pa luam yeeb tsawg thaum hlawv, me me ntawm cov molten droplets, daj ntawm nplaim taws thiab xiav rau hauv qab, thiab paraffin tsw. Polyethylene muaj kev tiv thaiv dej zoo dua. Qhov saum npoo ntawm cov khoom yog tsis-polar, nyuaj rau daim ntawv cog lus thiab luam tawm, thiab tau txhim kho los ntawm kev kho deg. Ntau cov saw hlau muaj qhov tsis zoo rau photodegradation thiab oxidation.

Nws qhov hnyav molecular yog nyob rau hauv thaj tsam ntawm 10,000 txog 100,000. Yog tias qhov hnyav molecular tshaj 100,000, nws yog ultra-high molecular hnyav polyethylene. Qhov siab dua qhov hnyav molecular, qhov zoo dua nws lub cev thiab cov khoom siv kho tshuab, thiab ze rau qib yuav tsum muaj cov khoom siv engineering. Tab sis qhov siab dua qhov hnyav molecular, qhov nyuaj dua nws yog ua. Polyethylene muaj qhov melting point ntawm 100-130 ° C thiab muaj qhov kub thiab txias tsis kam. Nws tseem tuaj yeem tswj xyuas cov khoom zoo ntawm -60 ° C, tab sis kev ua haujlwm kub yog 80 ~ 110 ° C.

Nws yog insoluble nyob rau hauv tej yam hnyav hnyav nyob rau hauv chav tsev kub, thiab yuav yaj nyob rau hauv ib tug me me npaum li cas ntawm toluene, amyl acetate, trichlorethylene thiab lwm yam kuab tshuaj tshaj 70 ° C.

Hluav taws xob cov khoom ntawm Polyethylene Resin

Vim tias polyethylene tsis yog-polar, nws muaj cov khoom siv hluav taws xob zoo heev uas tsis muaj dielectric poob thiab siab dielectric zog. Nws tuaj yeem siv los ua cov khoom siv hluav taws xob ntau zaus, corona-resistant yas, thiab high-voltage insulating khoom.

Thermal Properties

Lub tshav kub tsis kam ntawm polyethylene tsis siab, thiab nws txhim kho nrog nce ntawm cov txheeb ze molecular hnyav thiab crystallinity. Zoo tsis kub tsis kam, lub nkig kub tuaj yeem generally ncav cuag hauv qab -50 ℃; thiab nrog qhov nce ntawm cov txheeb ze molecular loj, qhov qis tshaj tuaj yeem ncav cuag -140 ℃. Lub linear expansion coefficient ntawm polyethylene yog loj, mus txog (20 ~ 24) × 10-5 / K. High thermal conductivity.