Ko ngā hua Hydroxypropyl Methyl Cellulose te mea e whakamahia nuitia ana i roto i te wāhanga o te whakapūhuitanga whakatārewatanga o te vinyl chloride i Haina. I roto i te whakapūhuitanga whakatārewatanga o te vinyl chloride, he pānga tika te pūnaha marara ki te hua, ki te kapia PVC, me te kounga o tana tukatuka me ngā hua. Ka āwhina te HydroxypropylMethylCellulose ki te whakapai ake i te pumau wera o te kapia me te whakahaere i te tohatoha rahi matūriki..Ko te kapia PVC i hangaia mai i te HydroxypropylMethylCellulose kounga teitei, ehara i te mea ka taea anake te whakarite kia tutuki i te raina mahi me ngā paerewa o te ao, engari ka taea hoki te whai i ngā āhuatanga ā-tinana pai, ngā āhuatanga matūriki pai rawa atu, me te whanonga rheological rewa pai rawa atu.
I roto i te hanga o ngā kapia hangai, pērā i te polyvinyl chloride, te polyvinylidene chloride, me ētahi atu copolymers, ko te whakapūtātanga polymerization te mea e whakamahia whānuitia ana, ā, me waiho hei monomers hydrophobic pumau e iri ana i roto i te wai. Hei polymers wairewa-wai, he pai te mahi mata o te hua HydroxypropylMethylCellulose, ā, he mahi hei kaihoko colloidal tiaki. Ka taea e te HydroxypropylMethylCellulose te ārai i ngā matūriki polymeric mai i te whakaputa me te whakakotahi. I tua atu, ahakoa he polymer wairewa-wai te HydroxypropylMethylCellulose, ka taea te wairewa paku i roto i ngā monomers hydrophobic, ā, ka taea te whakanui ake i te porosity monomer mō te hanga o ngā matūriki polymeric.
Hei tāpiritanga, kua whakaatuhia e ngā rangahau i roto i te tukanga whakaputa PVC, he rerekē te pūnaha marara e whakamahia ana e ngā umanga rerekē, nō reira he rerekē anō hoki ngā āhuatanga paninga o waho o te PVC i hangaia, ā, nō reira ka pā te HydroxypropylMethylCellulose ki te mahi tukatuka o ngā kapia PVC. I roto i te pūnaha kaihoko marara hiato, ko te kapia PVC whakatārewatanga i hangaia mai i te kaihoko marara hiato o te waipiro polyvinyl (PVA) me ngā nekehanga waipiro me te polymerization rerekē me te hydroxypropyl methyl cellulose (HPMC) tera pea he rerekē ngā pānga ki te mahi tukatuka. Kua whakaatuhia e ngā whakamātautau he pai ake te matū o te HydroxypropylMethylCellulose me te KP-08/KZ-04 me te nekehanga waipiro o te 68% -75%, ā, he pai hoki mō te porosity o te kapia me te mimiti o ngā plasticizers.
Wā tuku: Paenga-whāwhā-01-2022