Chigadzirwa Zita:polyurethane

Chigadzirwa Molecular chimiro:

Makemikari Zvivakwa:

Polyurethanes yakatanga kugadzirwa uye kuongororwa naDr Urethanes anobva eres of carbamic acids aripo chete muchimiro chevakuru [15]. Iyo mikuru mukana weTu ndeyekuti iyo keteni haina kuumbwa chete yekabhoni maatomu asi pane heteroatoms, oksijeni, kabhoni uye nitrogen [4]. Zvekushandisa maindasitiri, polyhydroxyl comppound inogona kushandiswa. Saizvozvo, poly-inoshanda nitrogen makomputa inogona kushandiswa pane zvinongedzo zvekunakidzwa. Nekuchinja uye kusiyanisa polyhydroxyl uye polyfunctional nitrogen makomputa, yakasiyana pus inogona kuve yakashongedzwa [15]. Polyester kana polyether resins ine hydroxyl mapoka anoshandiswa kugadzira polystor polyether-pu, zvichiteerana [6]. Kusiyana muhuwandu hwekudzorera uye kupatsanurwa pakati nepakati pemachira ebazi kuburitsa pus kubva mumutsara kusvika pamatanga uye 9Exible kune yakaomarara. Linear Pus inoshandiswa kuti ugadzire kwemachira uye kuumbwa [6]. Pus inochinjika inoshandiswa mukugadzirwa kwekusungira vamiririri uye jasi [5]. Inoshanduka uye yakaomesesa yakarukwa mapurasitiki, ayo anogadzira ruzhinji rwe pus yakagadzirwa, inogona kuwanikwa mumhando dzakasiyana-siyana muindasitiri [7]. Uchishandisa Low Molecular Huru Prepolymers, Various Block Copolymers inogona kugadzirwa. Iyo terminal hydroxyl boka rinobvumira kushanduka kwemabhuru, inonzi zvikamu, kuiswa muPu keteni. Kusiyana mune izvi zvikamu kunoguma mumadhigirii akasiyana emhando yepamusoro uye elasticity. Block inopa iyo yakaoma crystalline chikamu uye ine teni yeteni yakawedzerwa inotaurwa nezvikamu zvakaoma. Avo vanobvuma ambure ambery rabhay chikamu uye vane polyester / polyether vanonzi zvinonzi zvinyoro-nyoro zvikamu. Kurume

Chikumbiro:

Inoshanduka polyurethane inonyanya kuve mutsara wetsetse neTermoplasticsity, iyo ine kugadzikana kuri nani, kupesana nemakemikari, kusimba uye zvekumanikidza uye nekumanikidza kushoma kusiyana. Iyo ine yakanaka yekupisa insolis, insulting, kuvhundutsa kuramba uye kurwisa-kwepfu. Naizvozvo, inoshandiswa sekurongedza, kurira kwekusimbisa uye kusefa zvinhu. Rudzi rwePolyurethane mapurasitiki, inishuwarenzi, yakakwirira yekuuraya, kupokana kwemakemikari, zvinhu zvakanaka zvemagetsi, kugadzirisa kuri nyore, uye kusimuka kwemvura. Iyo inonyanya kushandiswa seyakagadzirwa zvinhu zvekuvaka, mota, maindasitiri ekushandisa, kupisa kwekupa uye kupisa kweremal. Polyurethane Elasomer performance pakati pePurasitiki uye rabha, kupokana nemafuta, kupfeka kurwisa, kupararira kupesana, kushamisika, kuomarara, kuomarara. Iyo inonyanya kushandiswa muShangu Indasitiri uye Indasitiri yekurapa. Polyurethane anogona kuitwawo mumakonzo, majasi, synthetic yeganda, nezvimwe.