N'ihi na ihe enyemaka nhazi nke PVC na-adaba na PVC ma nwee nnukwu ịdị arọ molecular (ihe dịka (1-2) × 105-2.5 × 106g / mol) na enweghị mkpuchi mkpuchi, ha na-ekpo ọkụ na ịgwakọta n'oge usoro nhazi. Ha na-ebu ụzọ mee ka ọ dị nro ma jikọta ụmụ irighiri ihe resin gbara ya gburugburu. Site na esemokwu na nnyefe ọkụ, a na-akwalite mgbaze (gel). Viscosity nke gbazee adịghị ebelata, ma ọ bụ ọbụna na-abawanye; N'ihi nchikota nke ụdọ molekụla, ngbanwe, ike na extensibility nke PVC emewo ka mma.
Tụkwasị na nke ahụ, n'ihi n'eziokwu na akụkụ ndị na-adaba adaba na nke na-adịghị mma nke PVC bụ ihe enyemaka nhazi na nhazi isi-shell. N'ozuzu ya, ọ dịghị ekwekọ na PVC ya mere ọ na-eje ozi dị ka mmanu mmanu nke dị n'èzí, ma ọ naghị eme ka ọ dị elu ma na-emepụta akpịrịkpa, nke nwere mmetụta na-egbu oge na-agbaze. Ya mere, dabere na njirimara ngwa ndị a, ihe enyemaka nhazi PVC nwere ike kewaa ụzọ abụọ: eluigwe na ala na mmanu mmanu. Ọrụ nke ihe enyemaka nhazi PVC zuru ụwa ọnụ bụ iji belata okpomọkụ na-agbaze, welie ike ọkụ na ịdị n'otu, belata mgbaji gbazee, na inye nnukwu ductility. Ọrụ ndị a nwere uru dị ukwuu maka nhazi PVC: ibelata okpomọkụ na-agbaze pụtara ịgbatị oge nkwụsi ike nke okpomọkụ, na-enye ihe nchekwa maka iji ihe eji eme ihe, na ikwe ka nhazi ọzọ; Ike thermal ka mma na mgbaji gbazee belata, nke pụtara na ọ nwere ike ịbawanye ọsọ nhazi, mee ka traction dịkwuo elu, ma melite ogo pụtara ìhè na nhazi; Meziwanye ịdị n'otu nke agbaze ahụ, nke nwere ike ibelata ihe mgbawa elu ma gbazee mgbawa nke ihe a na-agbapụta, si otú a na-abawanye arụpụtaghị ihe, na-eme ka ductility na thermoformability.
Oge nzipu: Sep-05-2024
