Isuku 99% min 1,4-Phenylene diisocyanate CAS 104-49-4 p-fenylene diisocyanate (PPDI)

PPDI ni nziza 1,4-Phenylene diisocyanate (PPDI), CAS numero 104-49-4. PPDI nigikoresho cyambere cyo gukiza / kwagura urunigi kuri polyurethane (PU) thermoplastique elastomers. PPDI ishingiye kuri casting elastomers igaragara hamwe nibikorwa byiza cyane. Inyungu igaragara nuko ibiziga byihuta byakozwe na PPDI birashobora guhagarara kubushyuhe bwo hejuru cyane mubikorwa byihuse kandi bikomeza. Rero, ibiziga bishingiye kuri PPDI nigisubizo cyiza kubyo bikenera ubuzima burebure, ubushobozi bwo gupakira hamwe nibisabwa birwanya ubushyuhe bwinshi. Muri rusange, PU elastomers yaranzwe no gukuramo neza, kurira no guca intege ugereranije na reberi yubukorikori. Nubwo PPDI na MDI bifite formulaire, ubukana hamwe na modulus ugereranije na TODI, isocyanate ifite igipimo cyo hasi cya polyol na polyol muri PPDI. Ahanini, PPDI yo mu bwoko bwa elastomers iroroshye guhinduka kuruta ubwoko bwa MDI gakondo na TODI yo mu bwoko bwa polyurethane elastomers. Muri elastomers zose za polyurethane, izishingiye kuri PPDI zizwiho ibiziga bikabije, ni ukuvuga amapine ya forklifts, ibinyabiziga n'indege; kuyobora ibizunguruka, ibiziga kumashini; umuvuduko mwinshi wa skate uzunguruka nibindi. Muri make, ubwoko bwa PPDI-elastomer nuburyo bwiza bwo guhitamo kubisabwa byo hasi cyane hamwe nubushyuhe bwo hejuru. Muri iki gihe, imiti ya PPDI ikoreshwa cyane mu bicuruzwa bya TPU nk'iyaguka ry'uruhererekane rw'ingenzi, kandi porogaramu ikomeza kwaguka, harimo O-impeta, kashe ya hydraulic, guhuza inyenyeri hamwe no gucapa ibyuma byerekana imashini.