Focus on Cellulose ethers

Uphuhliso lwetekhnoloji ye-hydroxyethyl cellulose

1. Umthamo wangoku wemveliso yasekhaya kunye nemfuno ye-hydroxyethyl cellulose

1.1 Intshayelelo yeMveliso

I-Hydroxyethyl cellulose (ebizwa ngokuba yi-hydroxyethyl cellulose) yi-cellulose ye-hydroxyalkyl ebalulekileyo, eyalungiswa ngempumelelo ngu-Hubert ngo-1920 kwaye ikwayi-ether ye-cellulose enyibilikayo yamanzi kunye nomthamo omkhulu wemveliso emhlabeni. Kuphela le yeyona inkulu kwaye ikhula ngokukhawuleza i-ether cellulose ebalulekileyo emva kwe-CMC kunye ne-HPMC. I-Hydroxyethyl cellulose yi-polymer e-non-ionic yamanzi e-soluble efunyenwe ngoluhlu lwe-chemical processing ye-cotton ecocekileyo (okanye i-pulp yomthi). Yinto eqinileyo emhlophe, engenavumba, engenancasa okanye eyigranular.

1.2 Umthamo wemveliso yehlabathi kunye nemfuno

Okwangoku, iinkampani ezinkulu zehlabathi ze-hydroxyethyl cellulose zigxile kumazwe angaphandle. Phakathi kwazo, iinkampani ezininzi ezifana neHercules kunye neDow e-United States zinamandla okuvelisa, zilandelwa yi-United Kingdom, iJapan, iNetherlands, iJamani kunye neRashiya. Kuqikelelwa ukuba amandla emveliso yehlabathi jikelele ye-hydroxyethyl cellulose kwi-2013 iya kuba yi-160,000 yeetoni, kunye nomyinge wokukhula wonyaka we-2.7%.

1.3 Umthamo wemveliso yaseTshayina kunye nemfuno

Okwangoku, umthamo wasekhaya wokuvelisa i-hydroxyethyl cellulose yi-13,000 yeetoni. Ngaphandle kwabavelisi abambalwa, ezinye zilungiswa kakhulu kwaye zixutywe iimveliso, ezingeyiyo i-hydroxyethyl cellulose ngokwenyani. Ikakhulu bajongana nemarike yenqanaba lesithathu. I-Domestic pure hydroxyethyl cellulose Imveliso yesiseko se-cellulose ingaphantsi kweetoni ze-3,000 ngonyaka, kwaye umthamo wangoku wemarike yasekhaya yi-10,000 yeetoni ngonyaka, apho ngaphezu kwe-70% ithunyelwa ngaphandle okanye ibonelelwa ngamashishini axhaswa ngemali kumazwe angaphandle. Abavelisi abaphambili bangaphandle yiNkampani yeYakuolong, iDow Company, iKlein Company, iAkzoNobel Company; imveliso yasekhaya hydroxyethyl cellulose abavelisi ikakhulu ibandakanya North Cellulose, Shandong Yinying, Yixing Hongbo, Wuxi Sanyou, Hubei Xiangtai, Yangzhou Zhiwei, njl. Imarike yasekhaya hydroxyethyl cellulose isetyenziswa ikakhulu ekwaleka kunye namashishini mihla le imichiza, kwaye ngaphezu kwe-70% yemarike. isabelo sihlala kwiimveliso zangaphandle. Inxalenye yeemarike ezilukiweyo, i-resin kunye ne-inki. Kukho umsantsa ocacileyo womgangatho phakathi kweemveliso zasekhaya nezangaphandle. Imarike yasekhaya ephezulu ye-hydroxyethyl ngokusisiseko ilawulwa yimveliso yangaphandle, kwaye iimveliso zasekhaya ziphakathi kunye ne-low-end market. Sebenzisa ngokudibeneyo ukunciphisa umngcipheko.

Imfuno yemakethe ye-hydroxyethyl cellulose isekelwe kummandla, i-Pearl River Delta (eMzantsi China) yeyokuqala; kulandele iYangtze River Delta (eMpuma China); okwesithathu, uMzantsi-ntshona noMntla weTshayina; i-latex ephezulu ye-12 yokwambathisa Ngaphandle kwe-Nippon Paint kunye ne-Zijinhua, ezizinze e-Shanghai, ezinye zifumaneka kummandla waseMzantsi China. Ukusasazwa kwamashishini ekhemikhali yemihla ngemihla kukwakhona ikakhulu eMzantsi China naseMpuma China.

Ukuqwalasela umthamo wemveliso esezantsi, ipeyinti imboni yokusetyenziswa kwe-hydroxyethyl cellulose, ilandelwa yimichiza yemihla ngemihla, kwaye okwesithathu, ioli kunye namanye amashishini adla kancinci kakhulu.

Ubonelelo lwasekhaya kunye nemfuno ye-hydroxyethyl cellulose: ibhalansi yobonelelo kunye nemfuno yemfuno, umgangatho ophezulu we-hydroxyethyl cellulose uphelelwe kancinci kwisitokhwe, kunye nenqanaba lobunjineli bomgangatho ophantsi we-hydroxyethyl cellulose, i-petroleum-grade hydroxyethyl cellulose, kunye neselulosi eguquliweyo ye-hydroxyethyl Cellulose inikezelwa ikakhulu amashishini asekhaya. I-70% yemarike yasekhaya ye-hydroxyethyl cellulose ithathwa yi-hydroxyethyl cellulose yangaphandle.

Iipropati kunye nokusetyenziswa kwe-2-hydroxyethyl cellulose

2.1 Iipropati ze-hydroxyethyl cellulose

Iimpawu eziphambili ze-hydroxyethyl cellulose kukuba i-soluble emanzini abandayo kunye namanzi ashushu, kwaye ayinayo i-gelling properties. Inoluhlu olubanzi lwedigri yokutshintsha, ukunyibilika kunye ne-viscosity. imvula. Isisombululo se-cellulose se-Hydroxyethyl sinokwenza ifilimu ecacileyo, kwaye ineempawu zohlobo olungenayo i-ionic olungahambelani ne-ion kwaye luhambelana kakuhle.

①Ubushushu obuphezulu kunye nokunyibilika kwamanzi: Xa kuthelekiswa ne-methyl cellulose (MC), enyibilika kuphela kumanzi abandayo, i-hydroxyethyl cellulose inokunyibilika emanzini ashushu okanye abandayo. Uluhlu olubanzi lwe-solubility kunye neempawu ze-viscosity, kunye ne-gelation engekho-thermal;

②Ukumelana netyuwa: Ngenxa yohlobo lwayo olungenayo i-ionic, luyakwazi ukuhlala kunye nezinye iipolymers ezinyibilikayo zamanzi, i-surfactants kunye neetyuwa kuluhlu olubanzi. Ke ngoko, xa kuthelekiswa ne-ionic carboxymethyl cellulose (CMC), i-hydroxyethyl cellulose inokumelana ngcono netyuwa.

③ Ukugcinwa kwamanzi, ukulinganisa, ukwenza ifilimu: amandla okugcina amanzi aphindwe kabini kune-methyl cellulose, kunye nolawulo oluhle kakhulu lokuhamba kunye nokwenza ifilimu egqwesileyo, ukunciphisa ilahleko yolwelo, ukungahambi kakuhle, isondo esikhuselayo se-colloid.

2.2 Ukusetyenziswa kwe-hydroxyethyl cellulose

I-cellulose ye-Hydroxyethyl yimveliso ye-cellulose e-ether engekho i-ionic yamanzi, esetyenziswa ngokubanzi kwi-architectural coatings, i-petroleum, i-polymerization, iyeza, ukusetyenziswa kwansuku zonke, iphepha kunye ne-inki, amalaphu, i-ceramics, ukwakhiwa, ezolimo kunye namanye amashishini. Inemisebenzi yokuqina, ukudibanisa, i-emulsifying, ukusabalalisa kunye nokuzinzisa, kwaye inokugcina amanzi, ukwenza ifilimu kunye nokubonelela ngempembelelo ye-colloid yokukhusela. I-soluble ngokulula emanzini abandayo kunye namanzi ashushu, kwaye inokubonelela ngesisombululo esinoluhlu olubanzi lwe-viscosity. Enye yee-ether ze-cellulose ezikhawulezayo.

1) Ipeyinti yeLatex

I-Hydroxyethyl cellulose sesona sityebi sisetyenziswa kakhulu kwiingubo zelatex. Ukongeza kwiingubo zelatex ezityebileyo, inokuphinda ifake, isasaze, izinze kwaye igcine amanzi. Ibonakaliswa yimpembelelo ephawulekayo yokuqina, ukuphuhliswa kakuhle kombala, ipropati yokwenza ifilimu kunye nokuzinza kokugcina. I-Hydroxyethyl cellulose yi-non-ionic cellulose derivative enokusetyenziswa kuluhlu olubanzi lwe-pH. Inokuhambelana kakuhle kunye nezinye izinto ezikwicandelo (ezifana nee-pigments, izongezo, iifayili kunye neetyuwa). Iingubo ezijiyile nge-hydroxyethyl cellulose zinerheology elungileyo kumazinga ahlukeneyo okucheba kwaye ziyi-pseudoplastic. Iindlela zokwakha ezifana nokuxubha, ukugquma ngerola, kunye nokutshiza zinokusetyenziswa. Ulwakhiwo oluhle, akukho lula ukuthontsiza, ukugoba kunye nokuchaphaza, kunye nomgangatho olungileyo.


Ixesha lokuposa: Nov-11-2022
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