He aha te whakamahinga o te HPMC ki te hanga?

Ko te Hydroxypropyl methylcellulose (HPMC) he momo cellulose ether e whakamahia nuitia ana i roto i te ahumahi hanga.He polymer wairewa-wai ka whakamahia hei taapiri i roto i nga taonga hanga maha, penei i te raima, te raima, te kumete, me te raima.Ka whakamahia te HPMC ki te hangahanga hei whakapai ake i nga ahuatanga o enei rawa, penei i te kaha mahi, te pupuri wai, me te piri.

Ko te HPMC he waerau waihanga i ahu mai i te cellulose, he waerau maori ka kitea i roto i nga tipu.Ka mahia ma te tauhohenga i te cellulose ki te propylene oxide katahi ka whakamarokehia.Ko te tukanga hydroxypropylation he taapiri i nga roopu hydroxyl ki nga ngota ngota cellulose, na reira ka memeha noa ki te wai.Ko te HPMC he taapiri pai mo nga taonga hanga, na te mea ka taea e ia te whakapai ake i nga ahuatanga o enei rawa me te kore e whakarereke i te hanganga matū.

Ka taea te whakamahi i te HPMC ki nga momo momo hanga, penei i te raima, te raima, te moata, me te raima.I roto i te ciment, ka taea te whakamahi HPMC ki te whakapai ake i te mahi o te ranunga, me te whakaiti i te hiahia wai mo te rite tonu.Ka awhina tenei ki te whakaiti i te nui o te ciment e hiahiatia ana mo tetahi mahi, me te whakaiti i te utu mo te mahi.Ka taea hoki te whakamahi i te HPMC ki te raima hei whakapai ake i te mahi me te pupuri wai o te ranunga.Ka taea e tenei te awhina ki te whakaiti i te nui o te wai e hiahiatia ana mo te rite tonu, me te whakaiti i te utu mo te mahi.

I roto i te moata me te raima, ka taea te whakamahi HPMC ki te whakapai ake i te piri o te moata, te raima ranei ki te taputapu.Ka awhina tenei ki te whakaiti i te nui o te wa me te whakapau kaha ki te tono i te moata, te raima ranei, me te whakaiti i te utu mo te mahi.Ka taea hoki te whakamahi i te HPMC hei whakapai ake i te pupuri wai o te kumete, te raima ranei, ka taea te whakaiti i te nui o te wai e hiahiatia ana mo te riterite.

I roto i te katoa, ko te HPMC he taapiri whai hua mo nga rawa hanga.Ka taea te whakamahi ki te whakapai ake i te kaha o te mahi, te pupuri wai, me te piri o te ciment, te raima, te moata, me te raima.Ka taea e tenei te awhina ki te whakaiti i te nui o te wa me te kaha e hiahiatia ana mo tetahi mahi, me te whakaiti i te utu mo te mahi.