ʻOiai ua like nā waiwai o ka hydroxypropyl methylcellulose me nā ethers wai-soluble ʻē aʻe, hiki ke hoʻohana ʻia i loko o nā uhi emulsion a me nā ʻāpana uhi resin wai-soluble ma ke ʻano he mea hana kiʻiʻoniʻoni, thickener, emulsifier a me stabilizer, a pēlā aku, e hāʻawi ana i ka pale ʻana i ka abrasion maikaʻi i ka uhi ʻana. ʻO ka uhi like a me ka hoʻopili ʻana, a me ka hoʻomaikaʻi ʻana i ka ʻili, ke kūpaʻa i nā waikawa a me nā kumu, a me ka hoʻohālikelike me nā pigments metala.
ʻOiai ʻoi aku ka kiʻekiʻe o ke kiko gel o ka HPMC ma mua o MC, ʻoi aku kona kūpaʻa i ka hoʻouka kaua bacteria ma mua o nā ethers cellulose ʻē aʻe, a no laila hiki ke hoʻohana ʻia ma ke ʻano he mea hoʻomānoanoa no nā uhi emulsion wai. Loaʻa i ka HPMC ke kūpaʻa mālama viscosity maikaʻi a me kona dispersibility maikaʻi loa, no laila kūpono loa ʻo HPMC ma ke ʻano he dispersant i nā uhi emulsion.
ʻO ka hoʻohana ʻana o ka hydroxypropyl methyl cellulose i ka ʻoihana uhi ʻana penei.
1. ʻOi aku ka maikaʻi o ke kūpaʻa ʻana o ka pena me ka viscosity like ʻole o ka HPMC configuration, ke kūpaʻa wela kiʻekiʻe, ka wehewehe anti-bacteria, ke kūpaʻa holoi a me ke kūpaʻa i nā waikawa a me nā kumu; hiki ke hoʻohana ʻia e like me ka mea hōʻiliʻili pena e loaʻa ana ka methanol, ethanol, propanol, isopropyl alcohol, ethylene glycol, acetone, methyl ethyl ketone a i ʻole diketone alcohol thickener; Loaʻa i nā uhi emulsified i hana ʻia me HPMC ka abrasion pulu maikaʻi loa; ʻOi aku ka maikaʻi o ka hopena o HPMC ma mua o HEC a me EHEC a me CMC e like me ka HPMC ma mua o HEC a me EHEC a me CMC e like me ka thickener pena.
2. ʻOi aku ka maikaʻi o ke kūpaʻa ʻana o ka hydroxypropyl methyl cellulose i hoʻololi ʻia i ka hoʻouka kaua bacteria ma mua o ka hoʻololi haʻahaʻa, a ʻoi aku ka maikaʻi o ke kūpaʻa o ka viscosity i nā polyvinyl acetate thickeners. Aia nā cellulose ethers ʻē aʻe i ka mālama ʻana ma muli o ka hoʻohaʻahaʻa kaulahao o ka cellulose ether a hoʻemi i ka viscosity o ka uhi.
3. Hiki i ka mea hoʻohemo pena ke hoʻoheheʻe ʻia i ka wai HPMC (kahi o 28% a 32% ka methoxy, 7% a 12% ka hydroxypropoxy), dioxymethane, toluene, paraffin, ethanol, methanol configuration, e hoʻopili ʻia i ka ʻili kū pololei, me ka viscosity a me ka volatility e pono ai. Hoʻopau kēia mea hoʻohemo pena i ka hapa nui o nā pena pīpī maʻamau, nā varnish, nā enamels, a me kekahi mau esters epoxy, epoxy amides, catalyzed epoxy amides, acrylates, etc. Hiki ke ʻili ʻia nā pena he nui i loko o kekahi mau kekona, pono kekahi mau pena i 10 ~ 15min a ʻoi aku paha, kūpono loa kēia mea hoʻohemo pena no nā ʻili lāʻau.
4. Hiki ke hana ʻia ka pena emulsion wai me 100 mau ʻāpana o ka pigment inorganic a organik paha, 0.5 ~ 20 mau ʻāpana o ka alkyl cellulose wai-soluble a i ʻole hydroxyalkyl cellulose a me 0.01 ~ 5 mau ʻāpana o ka polyoxyethylene ether a i ʻole ether ester. No ka laʻana, loaʻa ka colorant ma ke kāwili ʻana i 1.5 mau ʻāpana o HPMC, 0.05 mau ʻāpana o ka polyethylene glycol alkyl phenyl ether, 99.7 mau ʻāpana o ka titanium dioxide a me 0.3 mau ʻāpana o ke kalapona ʻeleʻele. A laila hoʻoulu ʻia ka hui ʻana me 100 mau ʻāpana o 50% polyvinyl acetate paʻa e loaʻa ai ka uhi, a ʻaʻohe ʻokoʻa ma waena o ka ʻili uhi maloʻo i hana ʻia ma ka hoʻopili ʻana ma ka pepa mānoanoa a hamo māmā me ka palaki.
Ka manawa hoʻouna: Mei-20-2022