Ko te Hydroxyethyl Cellulose (HEC) he rauemi pūmua wai-rewa kore-ionic e whakamahia whānuitia ana i roto i ngā mahi whakapaipai, rongoā, peita, paninga, hangahanga me ētahi atu mara. He tino pai tōna āhuatanga ki te whakamātotoru, ki te whakatārewatanga, ki te horapa, ki te whakaemulsification, ki te hanga kiriata, ki te pupuri wai me ētahi atu āhuatanga, nō reira kua noho hei kaihoko āwhina nui i roto i te maha o ngā ahumahi. Heoi, kāore te hydroxyethyl cellulose e whiwhi tika mai i ngā rauemi taiao, engari ka whiwhi mā te whakarerekē matū i te cellulose taiao. Hei whakatutuki i tēnei, kia mārama ai ki te pūtake taiao o te hydroxyethyl cellulose, me mārama tuatahi tātou ki te pūtake me te hanganga o te cellulose.
Pūtake tūturu o te cellulose
Ko te cellulose tētahi o ngā pūmua waro tino nui o te ao, ā, he whānuitia te kitea i roto i ngā pakitara pūtau o ngā tipu, inā koa i roto i ngā tipu rakau, te miro, te harakeke me ētahi atu muka tipu. He wāhanga matua o te hanganga tipu, ā, e whakarato ana i te kaha ā-pūkaha me te pumau. Ko te waeine taketake o te cellulose he ngota hukahuka, e honoa ana e ngā hononga β-1,4-glycosidic hei hanga i tētahi hanganga mekameka roa. Hei rauemi pūmua tūturu, he tino pai ngā āhuatanga ā-tinana me te matū o te cellulose, ā, he mea nui hei rauemi mata mō ngā momo hua.
Te tukanga whakarite o te hydroxyethyl cellulose
Ahakoa he maha ngā āhuatanga pai o te cellulose, he iti noa iho te whānuitanga o tana whakamahinga. Ko te take matua he ngoikore te wairewa o te cellulose, inā koa he iti noa te wairewa i roto i te wai. Hei whakapai ake i tēnei āhuatanga, ka whakarerekētia e ngā kaipūtaiao te cellulose hei hanga i ngā momo hua cellulose. Ko te Hydroxyethyl cellulose he cellulose ether wairewa-wai i whiwhihia mā te ethoxylating cellulose taiao mā te tauhohenga matū.
I roto i te tukanga whakarite motuhake, ka whakarewahia tuatahitia te cellulose tūturu ki roto i te otinga alkali, kātahi ka tāpirihia te ethylene oxide ki te pūnaha tauhohenga. Ka puta te tauhohenga ethoxylation o te ethylene oxide me ngā rōpū hydroxyl i roto i te cellulose hei whakaputa i te hydroxyethyl cellulose. Ka whakanuia e tēnei whakarerekētanga te hydrophilicity o ngā mekameka cellulose, ā, ka whakapai ake i tōna wairewatanga me ōna āhuatanga matotoru i roto i te wai.
Ngā pūtake rauemi matua
Ko te cellulose te rauemi matua māori mō te hanga i te hydroxyethyl cellulose, ā, ko ngā pūtake māori o te cellulose ko:
Rakau: He nui te nui o te cellulose i roto i te rakau, inā koa i roto i te rakau coniferous me te rakau whānui-rau, ka eke te cellulose ki te 40%-50%. Ko te rakau tētahi o ngā puna nui o te cellulose i roto i te ahumahi, inā koa i roto i te hanga pepa me te whakaputa i ngā hua cellulose.
Miro: He tata tonu te hanga o te muka miro i te cellulose parakore, ā, neke atu i te 90% te nui o te cellulose i roto i te miro. Nā te tino parakore, he maha ngā wā ka whakamahia te muka miro hei hanga i ngā hua cellulose kounga teitei.
Ngā muka tipu pēnei i te harakeke me te hānepi: He nui hoki te cellulose i roto i ēnei muka tipu, ā, nā te mea he kaha miihini teitei ēnei muka tipu, he painga anō hoki tō rātou ki te tango cellulose.
Para ahuwhenua: tae atu ki te kakau witi, te kakau witi, te kakau kānga, me ētahi atu. Kei roto i ēnei rauemi he nui o te cellulose, ā, ka taea te tango i te cellulose mai i a rātou mā roto i ngā tukanga maimoatanga tika, e whakarato ana i tētahi puna rauemi mata iti te utu me te whakahou ake mō te hanga i ngā hua cellulose.
Ngā wāhi tono o te hydroxyethyl cellulose
Nā ngā āhuatanga motuhake o te hydroxyethyl cellulose, he whānuitia te whakamahinga i roto i ngā mara maha. Anei ētahi o ngā whakamahinga matua:
Ahumahi hanga: E whakamahia whānuitia ana te Hydroxyethyl cellulose i roto i ngā rauemi hanga hei whakamātotoru me te pupuri wai, inā koa i roto i te moata sima, te gypsum, te paura putty me ētahi atu rauemi, ka taea ai te whakapai ake i ngā āhuatanga hanga me te pupuri wai o ngā rauemi.
Te ahumahi matū o ia rā: I roto i ngā hopi horoi, ngā hua tiaki kiri, ngā shampoo me ētahi atu hua matū o ia rā, ka whakamahia te hydroxyethyl cellulose hei whakamātotoru me te whakau hei whakapai ake i te ahua me te pumau o te hua.
Ngā peita me ngā paninga: I roto i te umanga paninga, ka whakamahia te hydroxyethyl cellulose hei whakamātotoru me te kaiwhakahaere rheology hei whakapai ake i te mahi o te paninga me te karo i te totohu.
Mara rongoā: I roto i ngā whakaritenga rongoā, ka taea te whakamahi i te hydroxyethyl cellulose hei here, hei whakamātotoru me te kaihoko whakatārewatanga mō ngā papa hei whakapai ake i ngā āhuatanga tuku me te pumau o ngā rongoā.
Ahakoa ehara te hydroxyethyl cellulose i te matū tūturu, he nui te kitea o tōna rauemi mata taketake, arā, te cellulose, i roto i ngā tipu o te taiao. Mā te whakarerekētanga matū, ka taea te huri i te cellulose tūturu hei hydroxyethyl cellulose me te mahi tino pai, ā, ka whakamahia hoki i roto i ngā momo ahumahi. Ko ngā tipu tūturu pērā i te rakau, te miro, te harakeke, me ētahi atu, he puna rauemi mata nui mō te hanga hydroxyethyl cellulose. I te whanaketanga o te pūtaiao me te hangarau me te pikinga ake o te tono ahumahi, kei te arotau tonuhia te tukanga hanga hydroxyethyl cellulose, ā, e tika ana kia whakaatuhia tōna uara ahurei i roto i ngā mara maha atu a muri ake nei.
Wā tuku: Oketopa-23-2024