Chii chinonzi cellulose ether?

Nzvimbo huru ye cellulose yekugadzirwa kwekutengesa kwe cellulose ether ndeyehuni pulp, kunyangwe mamwe masosi emiti-akavakirwa sekotoni uye zvimwe zvekurima-zvigadzirwa zvinogona kushandiswa zvakare. Iyo cellulose inopinda munhevedzano yemishonga yemakemikari, kusanganisira kucheneswa, alkalization, etherification, uye kuomesa, kugadzira yekupedzisira cellulose ether chigadzirwa.

Cellulose ether inopa akati wandei anodiwa zvivakwa zvinoita kuti ive yakakosha mumashandisirwo akasiyana siyana:

1.Water Solubility:Cellulose ether inowanzonyungudika mumvura, zvichiita kuti iparadzwe nyore nyore uye ibatanidzwe mune zvakasiyana-siyana. Inoumba mhinduro dzakajeka uye dzakagadzikana mumvura, ichipa yakanakisa kukora uye kudzikamisa zvivakwa.
2.Rheology Kugadziriswa:Imwe yemabhenefiti akakosha e cellulose ether kugona kwayo kugadzirisa mafambiro ekuyerera uye viscosity yezvinwiwa. Inogona kuita seyakakora mumiriri, ichipa yakagadziridzwa kuenderana, magadzirirwo, uye kugadzikana kune zvigadzirwa. Nekugadzirisa rudzi uye chiyero che cellulose ether, zvinokwanisika kuwana zvakasiyana-siyana zveviscosities, kubva kune yakaderera-viscosity fluid kusvika kune yakanyanya viscous gels.
3.Kugadzira Firimu:Cellulose ether inogona kugadzira mafirimu kana mhinduro yakaomeswa. Aya mafirimu akajeka, anochinjika, uye ane simba rakanaka rekusimba. Anogona kushandiswa semachira ekudzivirira, mabhainda, kana matrices mukushandisa kwakasiyana.
4.Kuchengeta Mvura:Cellulose ether ine yakanakisa kuchengetedza mvura. Mukuvaka maapplication, inogona kushandiswa muzvigadzirwa-simende kusimudzira kushanda, kuderedza kurasikirwa kwemvura, uye kugadzirisa hydration maitiro. Izvi zvinotungamira kukuvandudzwa kwesimba, kuderedzwa kutsemuka, uye kusimbaradzika kwekupedzisira kongiri kana dhaka.
5.Kunamatira uye Kusunga:Cellulose ether inoratidza zvinonamira zvivakwa, zvichiita kuti zvive zvakakosha sebhainda mune zvakasiyana-siyana zvinoshandiswa. Inogona kukurudzira kunamatira pakati pezvinhu zvakasiyana-siyana kana kuita sechinhu chinosunga mumapiritsi, granules, kana kugadzirwa kwehupfu.
6.Chemical Kugadzikana:Cellulose ether inopesana ne hydrolysis pasi pemamiriro ezvinhu, ichipa kugadzikana uye kushanda pamusoro pehuwandu hwepH mazinga. Izvi zvinoita kuti ive yakakodzera kushandiswa munzvimbo dzine acidic, alkaline, kana dzisina kwazvakarerekera.
7.Thermal Kugadzikana:Cellulose ether inoratidza kugadzikana kwakanaka kwekushisa, kuchibvumira kuchengetedza zvinhu zvayo pamusoro pehupamhi hwekushisa. Izvi zvinoita kuti ive yakakodzera kune maapplication anosanganisira kudziyisa kana kutonhora maitiro.

Yakakurumbira giredhi yeCellulose ether

Cellulose ether inowanikwa mumagiredhi akasiyana-siyana, imwe neimwe iine maitiro ayo chaiwo uye maitiro.Inonyanya kushandiswa cellulose ether mamakisi anosanganisira Hydroxypropyl Methylcellulose (HPMC), Methyl Hydroxyethylcellulose (MHEC), Hydroxyethylcellulose (HEC), Carboxymethylcellulose (CMC), Ethyl HydroxyethylCellulose ), Ethylcellulose (EC), uye Methylcellulose (MC). Ngationgororei giredhi rega rega mune zvakadzama:

1.Hydroxypropyl Methylcellulose (HPMC):

HPMC ndeimwe yeanonyanya kushandiswa seruseru ethers. Inotorwa kubva ku cellulose kuburikidza nekugadziriswa kwemakemikari nepropylene oxide uye methyl chloride. HPMC inozivikanwa nekuchengeta kwayo mvura, kukora, uye kugadzira firimu. Inopa kushanda zvakanaka, yakagadziridzwa adhesion, uye yakawedzera kuvhurika nguva mukuvaka zvikumbiro senge drymix dhaka, mataira anonamira, uye simende render. Muindasitiri yemishonga, HPMC inoshandiswa sebhainda, firimu rekare, uye rinodzorwa-kuburitsa mumiriri mukugadzira piritsi.
2.Methyl Hydroxyethylcellulose (MHEC):

MHEC is cellulose ether giredhi inogadzirwa nereacting cellulose ine methyl chloride uye ethylene oxide. Inopa zvakafanana zvivakwa kune HPMC asi neyakagadziridzwa kuchengetedza mvura. Inowanzoshandiswa mumatairi ekunamatira, grouts, uye simenti-based materials apo kuvandudza kushanda, kuchengetedza mvura, uye kunamatira kunodiwa. MHEC inowanawo kushandiswa muindasitiri yemishonga sebhainda uye firimu-inogadzira mumiriri mukugadzira piritsi.
3. Hydroxyethylcellulose (HEC):

HEC inotorwa kubva kune cellulose kuburikidza nekuwedzera ethylene oxide mapoka. Iyo inonyungudika mumvura uye inopa yakanakisa thickening uye rheology control zvivakwa. HEC inowanzoshandiswa muzvigadzirwa zvekuchengetedza munhu, zvakadai se shampoos, conditioners, uye lotions, kupa viscosity, kuwedzera furo kugadzikana, nekuvandudza hunhu hwekunzwa. Inoshandiswawo semukobvu uye bhainda mupendi, machira, uye zvinonamira.

4.Carboxymethylcellulose (CMC):

CMC inogadzirwa nekuita cellulose ine sodium monochloroacetate kuunza mapoka ecarboxymethyl pane cellulose cheni. CMC inonyanya kunyungudika nemvura uye inoratidza kukora, kudzikamisa, uye kugadzira firimu. Inowanzoshandiswa muindasitiri yechikafu seyakakora, inosimbisa, uye emulsifier mune zvakasiyana siyana zvigadzirwa, zvinosanganisira mukaka, bhekari, sosi, uye zvinwiwa. CMC inoshandiswawo mumishonga yemishonga, kuchengetedza munhu, uye maindasitiri emachira.

5.Ethyl Hydroxyethylcellulose (EHEC):

EHEC igiredhi re cellulose ether rinosanganisa zvinhu zve ethyl uye hydroxyethyl zvinotsiva. Iyo inopa yakawedzera kukora, rheology control, uye kugona kuchengetedza mvura. EHEC inowanzoshandiswa mumvura-based coatings, adhesives, uye zvinhu zvekuvaka kuvandudza kushanda, sag resistance, uye kuumbwa kwemafirimu.
6.Ethylcellulose (EC):

EC isiri-ionic cellulose ether iyo inonyanya kushandiswa mumishonga yemishonga uye coating maindasitiri. Hainyungudike mumvura asi inonyungudika muorganic solvents. EC inopa mabhaisikopo ekugadzira zvivakwa, zvichiita kuti ive yakakodzera kune inodzorwa-kuburitsa zvinodhaka masisitimu, enteric coatings, uye barriers coatings. Inoshandiswawo mukugadzirwa kweakakosha ingi, lacquers, uye anonamira.
7.Methylcellulose (MC):

MC inotorwa kubva ku cellulose kuburikidza nekuwedzera kwe methyl mapoka. Iyo inonyungudika mumvura uye inoratidza yakanakisa firimu-kuumba, thickening, uye emulsifying zvivakwa. MC inowanzoshandiswa muindasitiri yemishonga sebhainda, disintegrant, uye viscosity modifier mukugadzira piritsi. Inoshandiswawo muindasitiri yechikafu seyakakora, stabilizer, uye emulsifier muzvigadzirwa zvakasiyana.
Aya maserulosi ether mamakisi anopa huwandu hwakasiyana hwekushanda uye anosarudzwa zvichienderana nezvinodiwa chaizvo zvechikumbiro chega chega. Izvo zvakakosha kuti uzive kuti giredhi rega rega rinogona kuve neakasiyana mataurirwo uye maitiro ekuita, anosanganisira viscosity, molecular uremu, yekutsiva level, uye tembiricha yegel. Vagadziri vanopa tekinoroji data mapepa uye nhungamiro yekubatsira mukusarudza giredhi rakakodzera reimwe gadziriso kana application.

cellulose ether mamakisi akadai seHPMC, MHEC, HEC, CMC, EHEC, EC, uye MC ane zvivakwa zvakasiyana uye anoshandiswa mumaindasitiri akasiyana. Vanopa kuchengetedza kwemvura, kukora, kugadzira firimu, kunamatira, uye kugadzikana-kunatsiridza zvivakwa. Aya ma cellulose ether mamakisi anoita basa rakakosha mukuvaka, mishonga, zvigadzirwa zvekuchengeta munhu, chikafu, pendi uye machira, anonamira, nezvimwe, zvichibatsira mukuita uye kushanda kweakasiyana maumbirwo uye zvigadzirwa.

Cellulose ether inowana kushandiswa kwakakura mumaindasitiri akasiyana:

1.Indasitiri yeKuvaka: Mukuvaka, cellulose ether inoshandiswa sechinhu chinokosha chekuwedzera mumatope e drymix, tile adhesives, grouts, sement renders, uye self-leveling compounds. Inowedzera kushanda, kuchengetedza mvura, kunamatira, uye kusimba kwezvinhu izvi. Pamusoro pezvo, cellulose ether inovandudza mashandiro ekunze kwemafuta ekudzivirira masisitimu (ETICS) nekuwedzera kunamatira uye kuchinjika kwedhaka rinonamira.

2.Pharmaceutical Industry: Cellulose ether inoshandiswa zvakanyanya mukugadzirwa kwemishonga. Iyo inoshanda sebhainda, disintegrant, uye inodzorwa-kuburitsa mumiriri mukugadzirwa kwehwendefa. Inopa yakagadziridzwa kuomarara kwehwendefa, kukurumidza kupatsanurwa, uye inodzorwa kuburitsa zvinodhaka. Uyezve, cellulose ether inogona zvakare kushandiswa seyakagadziriswa viscosity mukuumbwa kwemvura, kumiswa, uye emulsions.

3.Personal Care and Cosmetics: Muzvigadzirwa zvekuchengetedza munhu, cellulose ether inoshandiswa sechinhu chinopisa, stabilizer, uye firimu-forming agent. Inopa inodiwa manyorerwo uye rheological zvimiro kune makirimu, lotions, gels, shampoos, uye mamwe ega ega ega magadzirirwo. Cellulose ether inobatsira kuvandudza kugadzikana, kupararira, uye ruzivo rwakakwana rwekunzwa kwezvigadzirwa izvi. Inogona zvakare kusimudzira mhando yefuro mukuchenesa mafomu.

4.Food Indasitiri: Cellulose ether inoshandiswa muindasitiri yezvekudya seyakakora agent, emulsifier, stabilizer, uye dietary fiber supplement. Inogona kuvandudza magadzirirwo, muromo, uye hupenyu hwesherufu hwezvigadzirwa zvekudya. Cellulose ether inowanzoshandiswa mumasalad dressings, sosi, kubikira, madhirita akaomeswa nechando, uye kugadzirwa kwechikafu chine mafuta mashoma kana mashoma.

5.Paints uye Coatings: Cellulose ether inoshandiswa mumapende uye machira se rheology modifier uye thickening agent. Inobatsira kudzora viscosity, kuyerera, uye kuenzanisa zvimiro zvejasi. Cellulose ether inovandudzawo kugadzikana uye kupararira kwemavara uye mafirita mukugadzira pendi.

6.Adhesives uye Sealants: Cellulose ether inowana kushandiswa mune zvakanamatira uye sealants kuti iwedzere viscosity yavo, kunamatira, uye kushanduka. Inovandudza kushanda uye tackiness yezvakagadzirwa, zvichiita kuti kusungirirwa kunoshanda kwezvinhu zvakasiyana-siyana.

7.Oil uye Gasi Indasitiri: Cellulose ether inoshandiswa mukuchera mvura uye kupera kwemvura muindasitiri yemafuta uye gasi. Inopa viscosity control, kuderedzwa kwemvura kurasikirwa, uye shale inhibition zvivakwa. Cellulose ether inobatsira kuchengetedza kugadzikana uye kushanda kwemvura yekuchera pasi pemamiriro ezvinhu akaoma.

8.Textile Indasitiri: Muindasitiri yemachira, cellulose ether inoshandiswa sechinhu chinokobvura machira ekudhinda machira. Iyo inosimudzira kuenderana, kuyerera, uye kufambisa kwemavara kweanodhinda paste, kuve nechokwadi chekuti mayunifomu uye anodhinda akadhinda.