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

PPDI ni 1,4-Phenylene diisocyanate (PPDI) yonyine, inomero ya CAS ni 104-49-4. PPDI ni uburyo bwo kongerera imbaraga/inyongera z'umunyururu zikoreshwa mu gutunganya thermoplastic elastomers za polyurethane (PU). Elastomers zishingiye kuri PPDI zifite imikorere myiza cyane. Akamaro kagaragara ni uko amapine yihuta cyane akorwa na PPDI ashobora gusobanura ubushyuhe bwinshi cyane mu gihe cyihuse kandi gihoraho. Bityo, amapine ashingiye kuri PPDI ni igisubizo cyiza ku bikenewe igihe kirekire, ubushobozi bwo gutwara imizigo bwinshi n'ubushyuhe bwinshi. Muri rusange, elastomers za PU zirangwa no gushwanyagurika neza, gucika no gukata ugereranije na rubbers za sintetike. Nubwo PPDI na MDI bifite imiterere imwe, ubukana n'imiterere ya modulus ugereranije na TODI, isocyanate ifite igipimo gito cya polyol kuri polyol muri PPDI. Muri make, elastomers zo mu bwoko bwa PPDI zoroshye kurusha elastomers zo mu bwoko bwa MDI na TODI zo mu bwoko bwa polyurethane. Muri elastomer zose za polyurethane, izishingiye kuri PPDI zizwiho amapine afite imbaraga nyinshi, urugero amapine yo guterura imodoka, ibinyabiziga n'indege; amapine y'abayobora, amapine y'imashini; amapine y'abaskeyiti yihuta cyane n'ibindi. Muri make, elastomer yo mu bwoko bwa PPDI ni yo mahitamo meza yo gukoresha mu gukuba hasi cyane no mu bushyuhe bwo hejuru cyane. Muri iki gihe, PPDI ikoreshwa cyane mu bikoresho bya TPU nk'inyongera y'umunyururu, kandi ikoreshwa rikomeza kwaguka, harimo impeta za O, imitako ya hydraulic, inyenyeri zihuza hamwe n'ibyuma bya squeegee bya ecran.