Polyvinyl Chloride (PVC)

I ka polymerization hoʻokuʻu o vinyl chloride, ʻo ka dispersed system ka hopena pololei i ka huahana, PVC resin, a me ka maikaʻi o kāna hana a me nā huahana. Kōkua ʻo Hydroxypropyl MethylCellulose i ka hoʻomaikaʻi ʻana i ke kūpaʻa wela o ka resin a me ka hoʻopaʻa ʻana i ka hāʻawi ʻana i ka nui o nā ʻāpana (ma nā huaʻōlelo ʻē aʻe, e hoʻoponopono i ka density PVC), a ʻo kāna nui he 0.025% -0.03% o ka hana PVC. ʻO ka resin PVC i hana ʻia mai ka Hydroxypropyl MethylCellulose kiʻekiʻe ʻaʻole hiki ke hōʻoia i ka laina hana me nā kūlana honua, akā hiki ke loaʻa i nā waiwai kino maikaʻi, nā waiwai particle maikaʻi a me nā ʻano hoʻoheheʻe rheological maikaʻi loa.

ʻO PVC kahi mea paʻa loa a lōʻihi loa e hiki ke hoʻohana ʻia i nā ʻano hana like ʻole, ʻo ka paʻakikī a i ʻole ka maʻalahi, ke keʻokeʻo a i ʻole ʻeleʻele a me ka laulā o nā kala ma waena.

I ka hana ʻana i nā resins synthetic, e like me ka polyvinyl chloride (PVC), polyvinylidene chloride, a me nā copolymers ʻē aʻe, ʻo ka polymerization suspension ka mea maʻamau i hoʻohana ʻia a pono nā monomers hydrophobic invariant i hoʻokuʻu ʻia i ka wai. Ma ke ʻano he polymers hiki ke hoʻoheheʻe ʻia i ka wai, ʻo Hydroxypropyl MethylCellulose ka huahana maikaʻi loa o ka ʻili a me nā hana ma ke ʻano he mea pale colloidal. Hiki i ka Hydroxypropyl MethylCellulose ke pale pono i nā ʻāpana polymeric mai ka hana ʻana a me ka agglomeration. Eia kekahi, ʻoiai ʻo Hydroxypropyl MethylCellulose he polymer hiki ke hoʻoheheʻe ʻia i ka wai, hiki ke hoʻoheheʻe iki ʻia i nā monomers hydrophobic a hiki ke hoʻonui i ka porosity monomer no ka hana ʻana i nā ʻāpana polymeric.