Cellulose ethers ma ka pā putty

ʻO ka cellulose ether (hydroxypropyl methylcellulose, HPMC no ka pōkole) he mea hoʻohui maʻamau no ke kūkulu ʻana i ka putty pā o loko a he hana koʻikoʻi i ka putty. ʻO ka HPMC me nā viscosities like ʻole he mana nui i ka hana o ka putty. Ke noiʻi nei kēia pepa i nā hopena a me nā kānāwai o nā viscosity like ʻole o ka HPMC a me kāna ʻano i ka hana ʻana o ka putty, a hoʻoholo i ka viscosity maikaʻi loa a me ke ʻano o ka HPMC i ka putty.

Hua'ōlelo nui: cellulose ether, viscosity, putty, hana

0.Olelo mua

Me ka ulu ʻana o ke kaiāulu, ʻoi aku ka makemake o ka poʻe e noho i loko o kahi kaiapuni o loko. I ke kaʻina hana o ka hoʻonaninani, pono e ʻoki ʻia nā wahi nui o nā paia a hoʻopaʻa ʻia me ka putty e hoʻopiha i nā lua. ʻO Putty kahi mea kākoʻo koʻikoʻi nui loa. ʻO ka hoʻomaʻamaʻa ʻana i ka putty kumu maikaʻi ʻole e hoʻopilikia i nā pilikia e like me ka haki ʻana a me ka ʻili ʻana o ka uhi pena. ʻO ka hoʻohana ʻana i nā ʻōpala ʻoihana a me nā mineral porous me nā waiwai hoʻomaʻemaʻe ea e aʻo ai i ka putty pale kaiapuni hale hou i lilo i kumuhana wela. Hydroxypropyl methyl cellulose (Hydroxypropyl methyl cellulose, English abbreviation is HPMC) he wai-soluble polymer material p, e like me ka mea i hoʻohana pinepine ʻia no ka hana ʻana i ka putty, he hana paʻa wai maikaʻi, hoʻolōʻihi i ka manawa hana a hoʻomaikaʻi i ka hana hana. . Ma muli o ka noiʻi hoʻokolohua mua, ua hoʻomākaukau kēia pepa i kahi ʻano putty pale kaiapuni o ka paia o loko me ka diatomite ma ke ʻano he mea hoʻopihapiha hana nui, a hoʻopaʻa pono ʻia i nā hopena o ka HPMC viscosity ʻokoʻa a me ka nui o ka putty ma ka pale wai o ka putty, ikaika hoʻopaʻa, mua. ka hoʻomaloʻo ʻana i ka māwae, ka wili ʻana Ka hopena o ka hana, ka hana a me ka manawa maloʻo o ka ʻili.

1. Māhele hoʻokolohua

1.1 E ho'āʻo i nā mea maka a me nā mea kani

1.1.1 Mea maka

ʻO ka 4 W—HPMC, 10 W—HPMC, a me 20 W—ʻO ka HPMC cellulose ether a me ka polyvinyl alcohol rubber pauka i hoʻohana ʻia i ka hoʻāʻo i hāʻawi ʻia e Kima Chemical Co., Ltd; diatomite na Jilin Diatomite Company; ka calcium kaumaha a me ka pauka talcum Hāʻawi ʻia e Shenyang SF Industrial Group; ʻO 32.5 R keʻokeʻo Portland sima i hāʻawi ʻia e Yatai Cement Company.

1.1.2 Mea hoao

ʻO ka mea hōʻike wai hoʻoheheʻe sima NLD-3; mea ho'āʻo anti-cracking maloʻo mua BGD 597; mea ho'āʻo ikaika paʻa naʻauao HC-6000 C; ka hui ʻana a me ka ʻeli ʻana e hoʻopuehu ana i ka mīkini multi-purpose BGD 750.

1.2 Hana hoʻokolohua

ʻO ke kumu kumu o ka hoʻāʻo, ʻo ia hoʻi, ka ʻike o ka sima, calcium kaumaha, diatomite, talcum pauka a me ka waiʻona polyvinyl he 40%, 20%, 30%, 6% a me 4% o ka nui o ka pauka putty, kēlā me kēia. . ʻO nā ʻano o ka HPMC me ʻekolu mau viscosity ʻokoʻa he 1‰, 2‰, 3‰, 4‰a me 5‰pakahi. No ka maʻalahi o ka hoʻohālikelike ʻana, mālama ʻia ka mānoanoa o ka hana putty single-pass ma 2 mm, a ʻo ka pae hoʻonui e hoʻomalu ʻia ma 170 mm a 180 mm. ʻO nā hōʻailona ʻike ʻo ia ka pale ʻana i ka māwae maloʻo mua, ka ikaika paʻa, ke kūpaʻa wai, ka waiwai one, ka hana a me ka manawa maloʻo.

2. Nā hopena hoʻāʻo a me ke kūkākūkā

2.1 Nā hopena o nā viscosities like ʻole o HPMC a me kāna ʻano i ka ikaika paʻa o ka putty

Mai nā hopena hoʻāʻo a me nā pihi ikaika paʻa o nā viscosities like ʻole o HPMC a me kāna ʻike ma ka putty's ikaika paa, hiki ke ike ia ka putty's piʻi mua ka ikaika pili a laila emi me ka hoʻonui ʻana o ka ʻike HPMC. ʻO ka ikaika paʻa o ka putty ka mana nui loa, e piʻi aʻe mai ka 0.39 MPa ke 1 ka ʻike.‰i ka 0.48 MPa ke 3 ka ʻike‰. ʻO kēia ke kumu i ka wā e hoʻopuehu ʻia ai ka HPMC i loko o ka wai, ʻo ka cellulose ether i loko o ka wai e pehu wikiwiki a hui pū me ka pauka lāʻau, hoʻopili ʻia kekahi me kekahi, a ua hoʻopuni ʻia ka huahana hydration cement e kēia kiʻi polymer e hana i kahi māhele matrix composite. ka paʻa putty Hoʻonui ka ikaika, akā inā nui ka nui o ka HPMC a i ʻole ka viscosity kiʻekiʻe a haʻahaʻa paha, ʻo ke kiʻi polymer i hana ʻia ma waena o HPMC a me nā ʻāpana sima he hopena sila, e hoʻemi ana i ka ikaika paʻa o ka putty.

2.2 Nā hopena o nā viscosity like ʻole o HPMC a me kāna ʻike i ka manawa maloʻo o ka putty

Hiki ke ʻike ʻia mai nā hopena hoʻāʻo o nā viscosities like ʻole o HPMC a me kāna ʻano i ka manawa maloʻo ʻili o ka putty a me ka pale manawa maloʻo. ʻOi aku ka nui o ka viscosity o HPMC a ʻoi aku ka nui o ke ʻano, ʻoi aku ka lōʻihi o ka manawa maloʻo o ka ʻili o ka putty. /T298—2010), ʻaʻole ʻoi aku ka nui o ka manawa maloʻo o ka pā o loko ma mua o 120 min, a i ka manawa o 10 W.—ʻOi aku ka HPMC ma mua o 4‰, a me ka mea o 20 W—ʻOi aku ka HPMC ma mua o 3‰, ʻoi aku ka manawa maloʻo o ka ʻili o ka putty i nā koi kikoʻī. ʻO kēia no ka mea he hopena maikaʻi ka mālama wai o HPMC. Ke hoʻohui ʻia ka HPMC i loko o ka putty, hiki i nā molekele wai a me nā pūʻulu hydrophilic ma ka molecular structure o HPMC ke hui pū kekahi me kekahi e hoʻolauna i nā ʻōpū liʻiliʻi. He hopena "roller" kēia mau puʻupuʻu, he mea maikaʻi ia i ka hui ʻana o ka putty Ma hope o ka paʻakikī ʻana o ka putty, e mau ana kekahi mau ea ea e hana i nā pores kūʻokoʻa, kahi e pale ai i ka wai mai ka evaporating wikiwiki loa a hoʻolōʻihi i ka manawa maloʻo o ka ʻili o ka putty. A i ka wā e hui pū ʻia ai ka HPMC i loko o ka putty, ua hoʻopili ʻia nā huahana hydration e like me ka calcium hydroxide a me ka CSH gel i loko o ka sima me nā molekele HPMC, kahi e hoʻonui ai i ka viscosity o ka solution pore, e hoʻemi i ka neʻe ʻana o nā ion i loko o ka hopena pore, a me nā lohi hou. ke kaʻina hana hydration.

2.3 Nā hopena o nā viscosity like ʻole o HPMC a me kāna ʻano ma luna o nā waiwai ʻē aʻe o ka putty

Hiki ke ʻike ʻia mai nā hopena hoʻāʻo o ka mana o nā viscosities like ʻole o ka HPMC a me ka nui o ka putty ma nā waiwai ʻē aʻe o ka putty. ʻO ka hoʻohui ʻana o HPMC me nā viscosities ʻokoʻa e hana i ka hoʻomaloʻo mua ʻana i ke kūʻē ʻana, ka pale ʻana i ka wai a me ka hana ʻana o ka putty i nā mea maʻamau, akā me ka piʻi ʻana o ka nui o ka HPMC , hana maikaʻi ʻole ka hana. Ma muli o ka hopena mānoanoa o ka HPMC, ʻoi aku ka nui o ka ʻike e hoʻonui i ke kūlike o ka putty, kahi e paʻakikī ai ke ʻoki i ka putty a hōʻino i ka hana hana.

3. Ka hopena

(1) Piʻi mua ka ikaika cohesive o ka putty a laila emi me ka piʻi ʻana o ka ʻike HPMC, a ʻoi aku ka hopena o ka ikaika cohesive o ka putty i ka wā o ka ʻike o 10 W-HPMC he 3‰.

(2) ʻOi aku ka nui o ka viscosity o HPMC a ʻoi aku ka nui o ka ʻike, ʻoi aku ka lōʻihi o ka manawa maloʻo ʻili o ka putty. Ke ʻoi aku ka ʻike o 10 W-HPMC ma mua o 4‰, a ʻoi aku ka ʻike o 20 W-HPMC ma mua o 3‰, lōʻihi loa ka manawa maloʻo o ka ʻili o ka putty a ʻaʻole kūpono i ka maʻamau. Koi.

(3) ʻO ka hoʻohui ʻana i nā viscosities like ʻole o ka HPMC e hana i ka pale ʻana i ka māwae maloʻo mua, ke kū ʻana i ka wai a me ka hana ʻana o ka putty maʻamau, akā me ka hoʻonui ʻana o kāna ʻike, ʻoi aku ka ʻino o ka hana. Ke noʻonoʻo pono nei, ka hana o ka putty i hui pū ʻia me 3‰ʻO 10 W-HPMC ka mea maikaʻi loa.