HPMC mo te hanga

Ko te Hydroxypropyl methyl cellulose (HPMC) he ether cellulose kore-ionic i ahu mai i te cellulose taiao. Kei te whakamahia nuitia i roto i te hanga hei maatete whakakaha, hei here, hei whakamararatanga, hei whakaemulsifier, hei maataki hanga kiriata, hei whakamarumaru i te colloid, me te kaihoko whakatarewa.

Ko te HPMC he ma ki te ma-ma-ma, he hongi, he kore reka, he paura kore-paitini. He wairewa i roto i te wai matao, ka hanga he wairewa marama, he wairewa. Kare e rewa i roto i nga whakarewa pararopi penei i te ewaro, te acetone, me te benzene. Ko te HPMC he polysaccharide anionic he mekameka raina o nga wae D-glucose e hono ana e nga here β-1,4-glycosidic. Ka puta mai i te tauhohenga o te methyl chloride me te hydroxypropyl chloride me te cellulose.

Kei te whakamahia nuitia te HPMC ki te hanga na te mea he tino pai nga taonga. Ka taea te whakamahi hei kaikawe matotoru hei whakanui ake i te viscosity o nga wairewa wai me te whakapai ake i te mahi o te ciment me te moata. Ka taea hoki te whakamahi hei here ki te whakapai ake i te piri o te ciment me te kumete ki nga taputapu. Ka taea hoki te whakamahi i te HPMC hei dispersant ki te whakaiti i te hiahia wai o te ciment me te moata me te whakapai ake i to raatau mahi. I tua atu, ka taea te whakamahi i te HPMC hei emulsifier ki te whakapai ake i te pumau o nga ranunga sima me te kumete.

Ka taea hoki te whakamahi i te HPMC hei kaihoko kiriata hei whakapai ake i te aukati wai o te ciment me te paru. Ka taea hoki te whakamahi hei colloid whakamarumaru ki te whakaheke i te mata o te sima me te kumete me te whakapai ake i o raatau mahi. Ka mutu, ka taea te whakamahi i te HPMC hei kaihoko whakatari hei whakapai ake i te whakatārewatanga o nga ranunga ciment me te moata.

Ko te HPMC he taapiri whai hua me te whai kiko mo nga tono hanga. Ka taea e ia te whakapai ake i te mahi o te ciment me te kumete, te whakaiti i o raatau hiahia wai, te whakapai ake i to raatau piri ki nga taputapu, me te whakapai ake i to raatau wai. I tua atu, ka taea te whakamahi hei emulsifier, he kaihoko hanga kiriata, he colloid whakamarumaru, he kaihoko whakatarewa. Ko te HPMC he taapiri ohaoha me te haumaru ka taea te whakamahi ki te whakapai ake i te mahi o nga ranunga ciment me te moata.