1. Ike mmepụta ụlọ ugbu a na ọchịchọ maka hydroxyethyl cellulose
1.1 Ngwaahịa Okwu
Hydroxyethyl cellulose (nke a na-akpọ hydroxyethyl cellulose) bụ ihe dị mkpa hydroxyalkyl cellulose, nke Hubert kwadoro nke ọma na 1920 ma bụrụkwa ether cellulose na-agbaze mmiri nke nwere nnukwu mmepụta ihe n'ụwa. Naanị nke a bụ cellulose ether kasị ukwuu na ngwa ngwa na-emepụta mgbe CMC na HPMC gasịrị. Hydroxyethyl cellulose bụ polymer na-abụghị ionic mmiri soluble nwetara site na usoro nhazi kemịkal nke owu a nụchara anụcha (ma ọ bụ osisi pulp). Ọ bụ ihe siri ike na-acha ọcha, enweghị isi, ntụ ntụ na-enweghị ụtọ ma ọ bụ granular.
1.2 Ike mmepụta ụwa na ọchịchọ
Ka ọ dị ugbu a, ụlọ ọrụ mmepụta hydroxyethyl cellulose kasị ukwuu n'ụwa na-etinye uche na mba ọzọ. N'ime ha, ọtụtụ ụlọ ọrụ dị ka Hercules na Dow dị na United States nwere ikike mmepụta ihe kachasị ike, United Kingdom, Japan, Netherlands, Germany na Russia sochiri ya. A na-eme atụmatụ na ikike mmepụta nke hydroxyethyl cellulose zuru ụwa ọnụ na 2013 ga-abụ tọn 160,000, yana nkezi uto kwa afọ nke 2.7%.
1.3 China mmepụta ikike na ina
Ka ọ dị ugbu a, ikike imepụta ọnụ ọgụgụ ụlọ nke hydroxyethyl cellulose bụ tọn 13,000. Ewezuga ndị na-emepụta ihe ole na ole, ndị ọzọ na-agbanwekarị na ngwaahịa ndị na-emepụta ihe, nke na-abụghị hydroxyethyl cellulose n'eziokwu. Ha na-ebute ụzọ ihu ahịa nke atọ. Ụlọ hydroxyethyl cellulose dị ọcha nke mmepụta cellulose bụ ihe na-erughị tọn 3,000 kwa afọ, na ikike ahịa ụlọ ugbu a bụ tọn 10,000 kwa afọ, nke ihe karịrị 70% na-ebubata ma ọ bụ nye ya site na ụlọ ọrụ ndị mba ọzọ na-enweta ego. Ndị isi mba ọzọ na-emepụta bụ Yakuolong Company, Dow Company, Klein Company, AkzoNobel Company; anụ ụlọ hydroxyethyl cellulose ngwaahịa na-emepụta tumadi gụnyere North Cellulose, Shandong Yinying, Yixing Hongbo, Wuxi Sanyou, Hubei Xiangtai, Yangzhou Zhiwei, wdg The anụ ụlọ hydroxyethyl cellulose ahịa bụ tumadi ji coatings na kwa ụbọchị chemical ụlọ ọrụ, na ihe karịrị 70% nke ahịa. òkè bụ nke mba ọzọ na ngwaahịa. Akụkụ nke ahịa akwa, resin na ink. Enwere ọdịiche dị mma doro anya n'etiti ngwaahịa ụlọ na nke mba ọzọ. Ahịa ụlọ dị elu nke hydroxyethyl bụ ngwaahịa ndị mba ọzọ na-achịkwa ya, na ngwaahịa ụlọ bụ isi n'ahịa etiti na nke dị ala. Jiri na ngwakọta iji belata ihe egwu.
Achọ maka ahịa hydroxyethyl cellulose sitere na mpaghara ahụ, Pearl River Delta (South China) bụ nke mbụ; Ihe na-esote Yangtze River Delta (East China); nke atọ, Southwest na North China; N'elu 12 latex coatings Ewezuga Nippon Paint na Zijinhua, nke bụ isi na Shanghai, ndị ọzọ dị na mpaghara South China. Nkesa nke ụlọ ọrụ kemịkalụ kwa ụbọchị bụkwa na South China na East China.
N'ịtụle site n'ikike mmepụta nke ala, agba bụ ụlọ ọrụ nwere nnukwu oriri nke hydroxyethyl cellulose, na-esote kemịkalụ kwa ụbọchị, na nke atọ, mmanụ, na ụlọ ọrụ ndị ọzọ na-eri ntakịrị.
Ngwongwo ụlọ na ọchịchọ nke hydroxyethyl cellulose: mkpokọta ọkọnọ na nguzozi chọrọ, hydroxyethyl cellulose dị elu adịchaghị ngwaahịa, yana mkpuchi mkpuchi ala ala hydroxyethyl cellulose, mmanụ ala hydroxyethyl cellulose, na gbanwetụrụ hydroxyethyl cellulose Cellulose na-ebutekarị site na. ụlọ ọrụ ụlọ. 70% nke mkpokọta ụlọ hydroxyethyl cellulose ahịa bụ nke mba ọzọ dị elu hydroxyethyl cellulose ji.
Njirimara na ojiji nke 2-hydroxyethyl cellulose
2.1 Njirimara nke hydroxyethyl cellulose
Ihe ndị bụ isi nke hydroxyethyl cellulose bụ na ọ na-agbaze na mmiri oyi na mmiri ọkụ, ọ nweghịkwa ihe eji eme ihe. Ọ nwere ogo nnọchi anya dị ukwuu, solubility na viscosity. mmiri ozuzo. Hydroxyethyl cellulose ngwọta nwere ike ịmepụta ihe nkiri transperent, ma nwee njirimara nke ụdị na-abụghị ionic nke na-adịghị emekọrịta ihe na ion ma nwee ezigbo ndakọrịta.
① Nnukwu okpomọkụ na mmiri solubility: E jiri ya tụnyere methyl cellulose (MC), nke bụ naanị soluble na mmiri oyi, hydroxyethyl cellulose nwere ike igbari na mmiri ọkụ ma ọ bụ mmiri oyi. Ụdị dịgasị iche iche nke solubility na njirimara viscosity, na gelation na-abụghị thermal;
② Nguzogide nnu: N'ihi ụdị ya na-abụghị ionic, ọ nwere ike ibikọ ọnụ na polymers ndị ọzọ na-edozi mmiri, surfactants na salts n'ọtụtụ dị iche iche. Ya mere, atụnyere ionic carboxymethyl cellulose (CMC), hydroxyethyl cellulose nwere mma nnu nguzogide.
③ Njide mmiri, nhazi ọkwa, imepụta ihe nkiri: ikike njide mmiri ya bụ okpukpu abụọ nke methyl cellulose, na-enwe usoro nhazi nke ọma na nhazi ihe nkiri mara mma, mbelata mmiri ozuzo, enweghị isi, nchebe colloid mmekọahụ.
2.2 Iji hydroxyethyl cellulose
Hydroxyethyl cellulose bụ ngwaahịa na-abụghị ionic mmiri soluble cellulose ether, nke a na-ejikarị na mkpuchi ụlọ, mmanụ ala, polymerization, ọgwụ, ojiji kwa ụbọchị, akwụkwọ na ink, akwa, seramiki, ihe owuwu, ọrụ ugbo na ụlọ ọrụ ndị ọzọ. Ọ nwere ọrụ nke ịgbakọ, njikọta, emulsifying, ịgbasa na nkwụsi ike, ma nwee ike idowe mmiri, mepụta ihe nkiri ma nye mmetụta colloid nchebe. Ọ na-edozi ngwa ngwa na mmiri oyi na mmiri ọkụ, ma nwee ike inye ngwọta na nnukwu viscosity. Otu n'ime cellulose ethers ngwa ngwa.
1) Agba latex
Hydroxyethyl cellulose bụ ihe a na-ejikarị eme ihe na mkpuchi latex. Na mgbakwunye na akwa mkpuchi latex, ọ nwekwara ike emulsify, gbasasịa, kwụsie ike na idowe mmiri. Ọ na-ji ịrịba ndim mmetụta, ezi agba mmepe, film-akpụ onwunwe na nchekwa kwụsie ike. Hydroxyethyl cellulose bụ ihe nrụpụta cellulose na-abụghị ionic nke enwere ike iji na oke pH. Ọ nwere ezigbo ndakọrịta na ihe ndị ọzọ dị na akụrụngwa (dịka pigmenti, ihe mgbakwunye, ihe ncha na nnu). Ihe mkpuchi mkpuchi na hydroxyethyl cellulose nwere ezigbo rheology na ọnụ ọgụgụ shea dị iche iche ma bụrụ pseudoplastic. Enwere ike iji usoro ihe owuwu dị ka brushing, mkpuchi rola, na ịfesa. Ihe owuwu dị mma, ọ naghị adị mfe ntapu, sag na splash, yana ọkwa dị mma.
Oge nzipu: Nov-11-2022