Introduction to Hydroxypropyl Methyl Cellulose
ʻO ka Hydroxypropyl methylcellulose, ka mea i ʻike ʻia he hypromellose a me HPMC cellulose hydroxypropyl methyl ether, i hana ʻia me ka pulupulu maʻemaʻe maʻemaʻe ma ke ʻano he mea maka, i hoʻokaʻawale ʻia ma lalo o nā kūlana alkaline. ʻO ka HPMC he pauka keʻokeʻo, ʻono ʻole, ʻaʻala ʻole, ʻaʻohe mea ʻawaʻawa, ʻaʻole i loli loa i loko o ke kino kanaka a hoʻokuʻu ʻia mai ke kino. Hiki ke hoʻoheheʻe ʻia ka huahana i ka wai, akā hiki ʻole ke hoʻoheheʻe ʻia i ka wai wela. ʻO ka hoʻonā wai he mea ʻeleʻele ʻeleʻele ʻeleʻele. He maikaʻi ka mānoanoa o ka HPMC, emulsifying, film-forming, dispersing, protective colloid, moisture retention, adhesion, acid and alkali resistance, enzyme resistance a me nā waiwai ʻē aʻe, a hoʻohana nui ʻia i ke kūkulu ʻana, nā uhi, nā lāʻau lapaʻau, nā meaʻai, textiles, nā māla aila, nā mea hoʻonaninani, nā mea holoi holoi, nā seramika, nā inika a me nā kaʻina hana polymerization.
1. ʻO ka haʻahaʻa o ka calcium haʻahaʻa o ka calcium hina a me ka ratio kūpono ʻole o CaO a me Ca(OH)2 i loko o ka calcium hina e lilo ai ka pauda. Inā pili ia me HPMC, a laila inā ʻilihune ka paʻa ʻana o ka wai o ka HPMC, e lilo pū ia i ka pauda. Ua pili ka pauda o ka pauda putty i ka hydroxypropyl methylcellulose? ʻO ka lilo o ka pauka o ka pauka putty e pili nui i ka maikaʻi o ka calcium lehu, a ʻaʻohe mea liʻiliʻi me HPMC.
2. ʻO ka hana nui o ka hydroxypropyl methylcellulose ka mālama ʻana i ka wai, a ma hope o ka mānoanoa. I loko o ka pauka putty, ʻoiai he maikaʻi ka paʻa ʻana o ka wai a haʻahaʻa ka viscosity (70,000-80,000), hiki nō hoʻi. ʻOiaʻiʻo, ʻoi aku ka kiʻekiʻe o ka viscosity, ʻoi aku ka maikaʻi o ka paʻa wai pili. Ke ʻoi aku ka viscosity ma mua o 100,000, e hoʻopili ka viscosity i ka paʻa wai. ʻAʻole nui hou.
He aha ka viscosity o ka hydroxypropyl methylcellulose (HPMC)?
ʻO ka pauka Putty maʻamau he 100,000 yuan, a ʻoi aku ka kiʻekiʻe o nā koi no ka mortar, a ʻo 150,000 yuan e koi ʻia no ka hoʻohana maʻalahi.
3. He aha nā mea waiwai nui o ka hydroxypropyl methylcellulose? ʻO nā mea waiwai nui o ka hydroxypropyl methylcellulose (HPMC): ka pulupulu hoʻomaʻemaʻe, ka methyl chloride, propylene oxide, a me nā mea waiwai ʻē aʻe, caustic soda, acid, Toluene, isopropanol, etc.
4. He aha ke kumu o ka pilau o hydroxypropyl methylcellulose? ʻO ka hydroxypropyl methylcellulose i hana ʻia e ke ʻano solvent e hoʻohana i ka toluene a me ka isopropanol e like me nā solvents. Inā ʻaʻole maikaʻi loa ka holoi ʻana, e ʻala ke koena.
5. Hydroxypropyl methylcellulose: ʻO ka mea me ka hydroxypropyl kiʻekiʻe maʻamau ʻoi aku ka maikaʻi ma ka mālama ʻana i ka wai. ʻO ka mea nona ka viscosity kiʻekiʻe, ʻoi aku ka maikaʻi o ka paʻa ʻana o ka wai, ma ke ʻano (ʻaʻole loa), a ʻoi aku ka maikaʻi o ka mea nona ka viscosity kiʻekiʻe i loko o ka momi sima. He aha nā hōʻailona ʻenehana nui? ʻO ka hydroxypropyl content a me ka viscosity, hopohopo ka hapa nui o nā mea hoʻohana i kēia mau hōʻailona ʻelua.
ʻO ka hanana o ka efflorescence i loko o ka mortar pili i ka hydroxypropyl methylcellulose?
I kekahi manawa i hala aku nei, ua ʻōlelo kekahi mea kūʻai aku he efflorescence ka huahana, a ke hana nei ʻo ia i ka pīpī. ʻO Shotcrete: ʻO ka hana nui ka uhi ʻana i ke kua, hoʻopaʻapaʻa, a hoʻonui i ka pili ʻana ma waena o ka pā a me ka mea ʻili. E hoʻohana liʻiliʻi, e pīpī wale i kahi ʻāpana lahilahi ma ka paia. Eia ke kiʻi o ka efflorescence phenomena a ka mea kūʻai mai i hoʻouna mai iaʻu: Picture ʻO kaʻu pane mua, ʻaʻole ia ke kumu o ka hydroxypropyl methylcellulose, no ka mea, ʻaʻole kūpono ka hydroxypropyl methylcellulose me kekahi mea i loko o ka pauda. A ʻo ke ʻano o ka efflorescence ʻo ia: silicate ka pāpaʻi maʻamau, i ka wā e hālāwai ai me ka ea a i ʻole ka makū i loko o ka pā, ua loaʻa ka silicate ion i kahi hopena hydrolysis, a hui pū ka hydroxide i hana ʻia me nā ion metala e hana i kahi hydroxide me ka haʻahaʻa haʻahaʻa (kemika waiwai Alkaline) , i ka pi'i 'ana o ka wela, e mahuka ana ka wai, a ho'okahe 'ia ka hydroxide mai ka paia. Me ka evaporation lohi o ka wai, ua precipitated ka hydroxide ma luna o ka ili o ka sima sima, e hōʻiliʻili i ka manawa, e hana ana i ka mea hoʻonaninani kumu Ke hāpai ʻia ka pena a i ʻole ka paʻa hou ʻana i ka paia, keʻokeʻo, ʻili, a. e ʻili ana. Kapa ʻia kēia hana ʻo "pan-alkali". No laila, ʻaʻole ia ka ubiquinol i hana ʻia e hydroxypropyl methylcellulose
Ua haʻi pū ka mea kūʻai aku i kahi hanana: ʻo ka grout sprayed āna i hana ai e loaʻa i ka pan-alkaline phenomenon ma ka pā pōhaku, ʻaʻole naʻe e ʻike ʻia ma ka pā pōhaku i puhi ʻia, e hōʻike ana i ka silikoni i loko o ka sima i hoʻohana ʻia ma ka pā paʻakai. nā paʻakai) kiʻekiʻe loa. Efflorescence ma muli o ka evaporation o ka wai i hoʻohana ʻia i ka spray grouting. Eia naʻe, ʻaʻohe silicate ma ka pā pōhaku i puhi ʻia a ʻaʻohe efflorescence e hiki mai. No laila, ʻaʻohe pili o ka efflorescence me ka pulupulu.
Hoʻoholo:
1. Ho'emi 'ia ka mea silicate o ka sima sima kumu.
2. E hoʻohana i ka anti-alkali back coating agent, e komo ka hoʻonā i loko o ka pōhaku e ālai i ka capillary, i hiki ʻole i ka wai, Ca(OH)2, ka paʻakai a me nā mea ʻē aʻe ke komo, a ʻoki i ke ala o ka hanana pan-alkaline.
3. E pale i ka komo ʻana o ka wai, a mai kāpīpī i ka wai nui ma mua o ke kūkulu ʻana.
Hoʻomaʻamaʻa i ka hanana pan-alkaline:
Hiki ke hoʻohana ʻia ka mea hoʻomaʻemaʻe pōhaku efflorescence ma ka mākeke. ʻO kēia mea hoʻomaʻemaʻe he wai translucent kala ʻole i hana ʻia me nā surfactants non-ionic a me nā solvents. He hopena koʻikoʻi ma ka hoʻomaʻemaʻe ʻana i kekahi mau ʻili pōhaku maoli. Akā, ma mua o ka hoʻohana ʻana, e ʻike pono e hana i kahi pahu hoʻāʻo liʻiliʻi e hoʻāʻo ai i ka hopena a hoʻoholo inā e hoʻohana.
Hoʻohana i ka Cellulose i ka ʻoihana kūkulu
1. Cement mortar: E hoʻomaikaʻi i ka hoʻopuehu ʻana o ka ciment-sand, hoʻomaikaʻi maikaʻi i ka plasticity a me ka paʻa ʻana o ka wai o ka mortar, he hopena i ka pale ʻana i nā māwae, a hoʻonui i ka ikaika o ka sima.
2. Tile cement: hoʻomaikaʻi i ka plasticity a me ka paʻa ʻana o ka wai o ka mortar tile paʻi, hoʻomaikaʻi i ka pili ʻana o nā tile, a pale i ka chalking.
3. ʻO ka uhi ʻana o nā mea refractory e like me asbestos: ma ke ʻano he mea hoʻomaha, mea hoʻomaikaʻi i ka wai, a hoʻomaikaʻi pū i ka ikaika hoʻopaʻa i ka substrate.
4. Gypsum coagulation slurry: hoʻomaikaʻi i ka mālama ʻana i ka wai a me ka processability, a hoʻomaikaʻi i ka pili ʻana i ka substrate.
5. ʻO ka sima hui: hoʻohui ʻia i ka sima hui no ka papa gypsum e hoʻomaikaʻi ai i ka wai a me ka paʻa ʻana o ka wai.
6. Latex putty: hoʻomaikaʻi i ka wai a me ka paʻa ʻana o ka wai o ka resin latex-based putty.
7. Stucco: Ma keʻano he paʻi e pani i nā huahana kūlohelohe, hiki iā ia ke hoʻonui i ka mālamaʻana i ka wai a hoʻonui i ka ikaika hoʻopaʻa me ka substrate.
8. Hoʻopili: E like me ka plasticizer no ka latex coatings, hiki ke hoʻomaikaʻi i ka operability a me ka fluidity o nā uhi a me nā pauka putty.
9. Paʻi pena: He hopena maikaʻi ia i ka pale ʻana i ka hili ʻana o ka sima a i ʻole ka latex spraying material a me nā mea hoʻopihapiha a me ka hoʻomaikaʻi ʻana i ka wai a me ke ʻano hoʻohālike.
10. Nā huahana lua o ka sima a me ka gypsum: hoʻohana ʻia ma ke ʻano he extrusion molding binder no ka cement-asbestos a me nā mea hydraulic ʻē aʻe e hoʻomaikaʻi ai i ka wai a loaʻa nā huahana i hoʻoheheʻe ʻia.
11. ʻO ka pā fiber: Ma muli o ka anti-enzyme a me ka hopena anti-bacterial, ua kūpono ia ma ke ʻano he mea hoʻopaʻa no nā paia one.
12. ʻO nā mea ʻē aʻe: Hiki ke hoʻohana ʻia ma ke ʻano he mea hoʻopaʻa ʻana i ka ea (PC version) no ka mīkini lepo lepo lahilahi a me ka mea hoʻokele hydraulic mud.
Nā noi ma ka ʻoihana kemika
1. Ka polymerization o ka vinyl chloride a me ka vinylidene: Ma ke ʻano he mea hoʻomaha a me ka dispersant i ka wā o ka polymerization, hiki ke hoʻohana pū ʻia me ka waiʻona vinyl (PVA) hydroxypropyl cellulose (HPC) e hoʻomalu i ke ʻano o ka ʻāpana a me ka hāʻawi ʻana i nā ʻāpana.
2. Hoʻopili: E like me ka mea hoʻopili no ka pepa pepa, hiki ke hoʻohana pū ʻia me ka pena vinyl acetate latex ma kahi o ka starch.
3. Pesticides: Hoʻohui ʻia i nā insecticides a me nā herbicides, hiki iā ia ke hoʻomaikaʻi i ka hopena adhesion i ka wā e pīpī ai.
4. Latex: Emulsion stabilizer no ka asphalt latex, manoanoa no ka styrene-butadiene rubber (SBR) latex.
5. Mea hoʻopili: ma ke ʻano he mea hoʻopili no nā penikala a me nā penikala.
Nā noi i loko o ka ʻoihana hoʻonaninani
1. Shampoo: E hoʻomaikaʻi i ka viscosity o ka shampoo, detergent, a me ka mea hoʻomaʻemaʻe a me ka paʻa o nā ʻōpū.
2. Pahu niho: E hoʻomaikaʻi i ka wai o ka toothpaste.
Nā noi ma ka ʻoihana lāʻau lapaʻau
1. Encapsulation: Hoʻohana ʻia ka mea hoʻopili i loko o kahi mea hoʻoheheʻe organik a i ʻole ka wai wai no ka hoʻokele lāʻau, ʻoi aku ka nui o ka encapsulation o nā granules i hoʻomākaukau ʻia.
2. Hoʻolohi i ka mea hana: 2-3 grams i ka lā, 1-2G i kēlā me kēia manawa, eʻikeʻia ka hopena i nā lā 4-5.
3. Nā kulu maka: No ka mea ua like ke kaomi osmotic o ka waimaka methylcellulose me ka waimaka, ʻaʻole ia e hoʻonāukiuki i nā maka, no laila ua hoʻohui ʻia i nā kulu maka ma ke ʻano he lubricant no ka hoʻopili ʻana i ka lens eyeball.
4. ʻO Jelly: ʻo ia ke kumu o ka lāʻau lapaʻau waho e like me ka jelly a i ʻole ka hamo.
5. ʻO ka lāʻau lapaʻau: ma ke ʻano he mānoanoa, mea mālama wai
Ka manawa hoʻouna: Nov-17-2022