Pena Pohaku Maoli me Cellulose Etera

ʻO ka mana o ka nui o ka cellulose ether, pili ka molecular mass a me ke ʻano o ka hoʻololi ʻana i ka wai-absorbing a me ka hoʻomaʻemaʻe ʻana o ka pena pōhaku maoli ke kūkākūkā ʻia, a ʻo ka cellulose ether me ke kūpaʻa wai-whitening maikaʻi loa o ka pena pōhaku maoli e pale ʻia, a loiloi ʻia ka hana piha o ka pena pōhaku maoli ʻike maka.

Hua'ōlelo nui:pena pōhaku maoli; wai keʻokeʻo kū'ē; cellulose etera

0、Olelo mua

ʻO ka varnish pōhaku maoli he synthetic resin emulsion sand wall architectural coating i hana ʻia me ka granite maoli, ka pōhaku i ʻoki ʻia a me ka pauka pōhaku e like me ka hōʻuluʻulu, synthetic resin emulsion ma ke ʻano kumu a hoʻohui ʻia me nā mea hoʻohui like ʻole. Loaʻa iā ia ke ʻano a me ka hopena hoʻonaninani o ka pōhaku maoli. Ma ka papahana hoʻonani o waho o nā hale kiʻekiʻe, makemake nui ʻia e ka hapa nui o nā mea nona a me nā mea kūkulu hale. Eia naʻe, i nā lā ua, ua lilo ka wai a me ka hoʻomaʻemaʻe ʻana i mea pōʻino nui o ka pena pōhaku maoli. ʻOiai aia kahi kumu nui o ka emulsion, ʻo ka hoʻohui ʻana o ka nui o nā mea hydrophilic e like me cellulose ether e hoʻonui nui i ka hoʻopili wai o ka kiʻi pena pōhaku maoli. I loko o kēia haʻawina, mai nā lima o ka cellulose ether, ua kālailai ʻia ka mana o ka nui o ka cellulose ether, pili molecular kaumaha a me ke ʻano hoʻololi i ka wai-absorbing a me ka whitening phenomenon o ka pena pōhaku maoli.

1. ʻO ke ʻano o ka lawe ʻana i ka wai a me ke keʻokeʻo o ka pena pōhaku maoli

Ma hope o ka maloʻo ʻana o ka peʻa pōhaku maoli, hiki ke hoʻomaʻemaʻe i ka wā e hui ai i ka wai, ʻoi loa i ka wā mua o ka maloʻo ʻana (12h). I ka wā ua, e palupalu a keʻokeʻo ka uhi ma hope o ka holoi ʻia ʻana e ka ua no ka manawa lōʻihi. ʻO ke kumu mua, ʻo ia ka emulsion e komo i ka wai, a ʻo ka lua ke kumu o nā mea hydrophilic e like me cellulose ether. Loaʻa i ka cellulose ether nā hana o ka mānoanoa a me ka mālama ʻana i ka wai. Ma muli o ka hoʻopili ʻia ʻana o nā macromolecules, ʻokoʻa ke kahe o ka hopena me ka wai o Newtonian, akā hōʻike i kahi ʻano e loli me ka hoʻololi ʻana o ka ikaika shear, ʻo ia hoʻi, he thixotropy kiʻekiʻe. E hoʻomaikaʻi i ka hana hana o ka pena pōhaku maoli. Hoʻokumu ʻia ka cellulose me D-glucopyranosyl (anhydroglucose), a ʻo kāna ʻano mole mole maʻalahi (C6H10O5)n. Hoʻokumu ʻia ka cellulose ether e ka cellulose alcohol hydroxyl group a me alkyl halide a i ʻole etherification agent ma lalo o nā kūlana alkaline. ʻO ka hydroxyethyl cellulose ether structure, ʻo ka helu awelika o nā pūʻulu hydroxyl i hoʻololi ʻia e nā reagents i kēlā me kēia ʻāpana anhydroglucose ma ke kaulahao mole cellulose i kapa ʻia ke degere o ka hoʻololi ʻana, ua hoʻololi ʻia nā pūʻulu hydroxyl 2, 3, a me ka pae kiʻekiʻe o ka hoʻololi ʻana he 3 Hiki i nā hui hydroxyl manuahi ma ke kaulahao mole o ka cellulose ether ke hana i nā paʻa hydrogen, a hiki ke hana pū me ka wai e hana i nā paʻa hydrogen. ʻO ka hoʻopili ʻana o ka wai a me ka paʻa ʻana o ka wai o ka cellulose ether he hopena pololei i ka hoʻoheheʻe ʻana o ka wai a me ke keʻokeʻo o ka pena pōhaku maoli. ʻO ka hana ʻana o ka wai a me ka mālama ʻana i ka wai o cellulose ether e pili ana i ke kiʻekiʻe o ka hoʻololi ʻana o cellulose, substituents a me ke degere o ka polymerization o cellulose ether ponoʻī.

2. Māhele hoʻokolohua

2.1 Nā mea hana hoʻokolohua a me nā mea hana

JFS-550 mīkini hana nui no ka hoʻoulu ʻana, ka wikiwiki wikiwiki a me ka wili ʻana i ke one: Shanghai Saijie Chemical Equipment Co., Ltd.; JJ2000B kaulike uila: Changshu Shuangjie Testing Instrument Factory; CMT-4200 mīkini ho'āʻo uila uila: Shenzhen Sansi Experimental Equipment Co., Ltd.

2.2 Kumu hoʻokolohua

2.3 Kaʻina hana hoʻokolohua

E hoʻohui i ka wai, defoamer, bactericide, antifreeze, kōkua hana kiʻiʻoniʻoni, cellulose, pH regulator a me ka emulsion i ka disperser e like me ke ʻano e hoʻopuehu like ai, a laila hoʻohui i ke one kala a hoʻoulu maikaʻi, a laila hoʻohana i ka nui o ka mānoanoa E hoʻoponopono i ka viscosity , e hoʻopuehu like, a loaʻa i ka pena pōhaku maoli.

E hana i ka papa me ka pena pōhaku maoli, a e hana i ka ho'āʻo hoʻomaʻemaʻe wai ma hope o ka hoʻōla ʻana no 12 mau hola (ka hoʻokomo ʻia i loko o ka wai no 4 mau hola).

2.4 Hoao hana

Wahi a JG / T 24-2000 "Synthetic Resin Emulsion Sand Wall Paint", ua hoʻokō ʻia ka hoʻokō hoʻokō, me ka nānā ʻana i ke kūpaʻa wai keʻokeʻo o nā peʻa pōhaku maoli hydroxyethyl cellulose ether, a me nā mea ʻenehana ʻē aʻe e pono e hoʻokō i nā koi.

3. Nā hopena a me ke kūkākūkā

E like me nā hiʻohiʻona hana o ka hydroxyethyl cellulose ether, ua aʻo ikaika ʻia nā hopena o ka nui o ka hydroxyethyl cellulose ether, ke kaupaona molekala pili a me ke ʻano hoʻololi i ke kūʻokoʻa wai o ka pena pōhaku maoli.

3.1 Ka hopena o ka dosage

Me ka piʻi ʻana o ka nui o ka hydroxyethyl cellulose ether, e hoʻohaʻahaʻa mālie ka pale ʻana o ka wai o ka pena pōhaku maoli. ʻOi aku ka nui o ka cellulose ether, ʻoi aku ka nui o nā pūʻulu hydroxyl manuahi, ʻoi aku ka nui o ka wai e hana i nā paʻa hydrogen me ia, e piʻi ka wai absorption rate o ke kiʻi pena pōhaku maoli, a e emi iho ke kūpaʻa wai. ʻOi aku ka nui o ka wai i loko o ke kiʻi pena, ʻoi aku ka maʻalahi o ka hoʻomaʻemaʻe ʻana i ka ʻili, no laila ʻoi aku ka maikaʻi o ka pale ʻana o ka wai.

3.2 Ka hopena o ka nui mole mole pili

Ke like ka nui o ka hydroxyethyl cellulose ethers me nā molekala pili like ʻole. ʻOi aku ka nui o ka nui o ka molekala pili, ʻoi aku ka ʻino o ka wai keʻokeʻo keʻokeʻo o ka pena pōhaku maoli, e hōʻike ana i ke kaupaona ʻana o ke kaumaha o ka hydroxyethyl cellulose etera i ka wai keʻokeʻo kūʻē o ka pena pōhaku maoli. ʻO kēia no ka mea, ʻoi aku ka ikaika o nā paʻa kemika > nā paʻa hydrogen > van der Waals, ʻoi aku ka nui o ka nui o ka molecular pili o cellulose ether, ʻo ia hoʻi, ʻoi aku ka nui o ka polymerization, ʻoi aku ka nui o nā paʻa kemika i hana ʻia e ka hui ʻana o nā ʻāpana glucose, a ʻoi aku ka nui ʻO ka ikaika o ka pilina o ka ʻōnaehana holoʻokoʻa ma hope o ka hoʻokumu ʻana i nā paʻa hydrogen me ka wai, ʻoi aku ka ikaika o ka absorption wai a me ka mana paʻa wai, ʻoi aku ka maikaʻi o ka pale ʻana o ka wai keʻokeʻo o ka pena pōhaku maoli.

3.3 Ka hopena o ke ʻano hoʻololi

Hōʻike nā hopena hōʻike ʻoi aku ka maikaʻi o ka hoʻololi hydrophobic nonionic ma mua o ka mea mua, a ʻo ka hoʻololi anionic ka mea ʻino loa. Non-ionic hydrophobically hoʻololi cellulose etera, ma ka grafting hydrophobic pūʻulu ma ka molecular kaulahao o cellulose etera. I ka manawa like, loaʻa ka mānoanoa o ka pae wai ma o ka hoʻopaʻa ʻana i ka hydrogen o ka wai a me ke kaulahao molecular entanglement. Hoʻemi ʻia ka hana hydrophobic o ka ʻōnaehana, no laila e hoʻomaikaʻi ʻia ka hana hydrophobic o ka pena pōhaku maoli, a ʻoi aku ka maikaʻi o ka pale ʻana o ka wai. Hoʻololi ʻia ka cellulose ether i hoʻololi ʻia e ka cellulose a me ka polyhydroxysilicate, ka mea e hoʻomaikaʻi ai i ka hana mānoanoa, ka hana anti-sag a me ka hana anti-splash o cellulose ether, akā ikaika kona ionicity, a ua hoʻomaikaʻi ʻia ka wai absorption a me ka hiki ke hoʻopaʻa ʻia. ʻoi aku ka ʻino o ka pena pōhaku maoli.

4. Ka hopena

Hoʻopili ʻia ka wai a me ka hoʻomaʻemaʻe ʻana o ka pena pōhaku maoli e nā kumu he nui e like me ka nui o ka cellulose ether a me ke ʻano hoʻololi o ka molecular mass. ʻO ka wai a me ka hoʻomaʻemaʻe ʻana o ka pena pōhaku maoli.