• Hpmc Cellulose

Hydroxypropylmethylcellulose HPMC hei dispersant, thickener and binder in building treatment

Mei . 22, 2024 11:40 Hoki ki te rarangi
Hydroxypropylmethylcellulose HPMC hei dispersant, thickener and binder in building treatment

Ko te Hydroxypropyl methylcellulose HPMC te nuinga o te whakamahi i roto i te hanga o te kumete ciment me nga hua gypsum hei dispersant, thickener me te here i roto i te maimoatanga whare. Ka whakamahia i roto i te kumete ciment ki te whakanui ake i te whakakotahitanga, te whakaiti i te pupuhi, te whakapai ake i te pokey me te whakaheke, me te pupuri i te wai. Whakaitihia te mate o te wai me te kaha o te mata raima, te aukati i nga kapiti me te huarere o nga tote wairewa; Ko te Hydroxypropyl methylcellulose HPMC he thixotropy, ka taea te whakamahi ki te whakarite i te peita moata waiiti iti ka taea te tono ki nga pakitara poutū i roto i te koti matotoru kotahi; Ko te HPMC te whakapai ake i te whakapiringa me te kaha mahi, no reira he pai mo te whakarite moata rehu rere ngawari mo te peita paparanga angiangi.
Ko te nui o te HPMC e whakamahia ana i roto i nga taonga hanga whare he iti rawa, ko te 0.1% ~ 1% anake, engari he nui te painga. Ka taea te whakamahi hei peera, te tackifier, te wai pupuri wai, te hau entraining agent me te retarder mo te peita, te raima, te moata me nga hua ciment, hei whakanui ake i tana mahi, te pupuri wai, te whakapiri ranei ki te akoranga turanga. I tua atu, i runga i nga whakaritenga o te tiaki i te taiao, i te wa e maroke ana te whakaranu i te kumete, ka karohia te mahi ohorere na te whakauru i runga i te waahi, te parahanga ki te taiao a tawhio noa, te kino o te hanganga me te iti o te pai o te rere. Ko te whakapiri mo nga taera uku me te putty pakitara o roto me waho he 107 te whakapiri. Mai i te tirohanga o te tiaki taiao, he pai te cellulose ether, penei i te HEC me te HPMC.
He pai te mahi honohono o te ciment, engari he rereke te mahi honohono o te slurry ciment me te kumete ciment na te rereketanga o te mahi me nga tikanga i waenga i te paparanga hono me te mata here i te wa e hanga ana. A, no te nui te mahi absorption wai o te mata hononga, ka meinga te reira dehydration o te mata hononga, tino whakaiti i te kirihou me te adhesion o te kumete ciment, me te tino whakaiti i te kaha hononga. I nga wa o mua, i taapirihia te gypsum, te kapia 107 ranei ki te kumete ciment, engari kei te noho tonu etahi koha penei i te iti o te ine me te uaua o te hangarau hanga. Ka piki ake te kaha o te cellulose ether i roto i te wai me te turanga ngoikore.
Ko nga paanga o te taapiri cellulose ether ko:
1. Whakapai ake i te wa whakatuu tuatahi me te wa whakamutunga o te ciment;
2. Whakapai ake i te ahotea o te kumete ciment;
3. Whakapai ake i te kaha pupuri wai o te ciment me te gypsum;
4. Ka heke te kaha compressive me te kutikuti o te kumete ciment;
5. Whakapai ake i te mahi honohono o te kumete.3

 

Te wa tuku: Oketopa-17-2022
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