Ko te Hydroxypropyl methylcellulose he matū pūmua wairewa-wai, e mōhiotia ana ko te kapia wairewa-wai, ko te pūmua wairewa-wai rānei. Ka whakamātotoru i te ranunga mā te whakanui ake i te matotoru o te wai whakaranu. He rauemi pūmua wai-aroha. Ka taea te wairewa ki te wai hei hanga i tētahi otinga, i tētahi marara rānei. E whakaatu ana ngā whakamātautau, ina piki ake te nui o te superplasticizer e ahu mai ana i te naphthalene, ka whakaitihia e te whakaurunga o te superplasticizer te ātete marara o te moata sima hou kua whakaranua. Nā te mea he surfactant te superplasticizer naphthalene. Ina tāpirihia te kaihoko whakaiti wai ki te moata, ka whakaritea te kaihoko whakaiti wai ki runga i te mata o ngā matūriki sima, kia rite te utu o te mata o ngā matūriki sima. Ka pakaruhia e tēnei pana hiko te hanganga flocculation i hangaia e ngā matūriki sima, ā, ka tukuna te wai kua takai ki roto i te hanganga, ka ngaro te wāhanga o te sima. I taua wā anō, i kitea, nā te pikinga o te ihirangi HPMC, ka pai haere te ātete marara o te moata sima hou.
Ngā āhuatanga kaha o te raima:
Ko te ranunga raima kore-marara HPMC i raro i te wai e whakamahia ana i roto i te hangarau turanga piriti huarahi, ā, ko te taumata kaha hoahoa ko C25. E ai ki te whakamātautau taketake, ko te nui o te sima he 400kg, ko te nui o te microsilica he 25kg/m3, ko te nui tino pai o te HPMC he 0.6% o te nui o te sima, ko te ōwehenga wai-sima he 0.42, ko te ōwehenga onepu he 40%, ā, ko te putanga o te naphthyl superplasticizer he 8% o te nui o te sima. , Ko te kaha toharite o ngā tauira raima i te rangi mō ngā rā 28 he 42.6MPa, ā, ko te kaha toharite o te raima i ringihia ki raro i te wai mō ngā rā 28 me te maturuturunga wai o te 60mm.
1. He mārama te pānga whakaroa o te tāpiri o te HPMC ki te ranunga moata. Mā te pikinga ake o te nui o te HPMC, ka roa haere te wā whakatō o te moata. I raro i te nui o te HPMC, he pai ake te moata i hangaia i raro i te wai i te moata i hangaia i te rangi. Ka roa ake te wā whakatōtika o te whakahāngai. Mā tēnei āhuatanga ka māmā ake te papu raima i raro i te wai.
2. He pai te mahi piri o te moata sima hou kua konatunatua ki te hydroxypropyl methylcellulose, ā, kāore e toto.
3. I te tuatahi ka heke te nui o te HPMC me te hiahia wai mō te moata, kātahi ka tino piki ake.
4. Mā te whakaurunga o te matū whakaiti wai ka pai ake te raruraru o te pikinga o te hiahia wai mō te moata, engari me whakahaere tika, ki te kore ka whakaitihia te ātete marara i raro i te wai o te moata sima hou kua whakaranua.
5. He iti noa te rerekētanga o te hanganga o te tauira whakapiri sima i konatunatua ki te HPMC me te tauira kau, ā, he iti noa te rerekētanga o te hanganga me te mātotoru o te tauira whakapiri sima i te ringihanga wai me te hau. He paku mārō te tauira i hangaia i muri i te 28 rā i raro i te wai. Ko te take matua ko te tāpiri o te HPMC ka tino whakaiti i te ngaronga me te marara o te sima i te wā e ringihanga ana ki te wai, engari ka whakaitihia hoki te kiato o te kōhatu sima. I roto i te kaupapa, me whakaiti te nui o te HPMC i te mea ka taea, me te whakarite kia kore e marara i raro i te wai.
6. Mā te whakakotahitanga o te ranunga raima kore-marara HPMC i raro i te wai, ka pai ake te whakahaere i te nui. Kua whakaatuhia e ngā kaupapa whakamātautau ko te ōwehenga kaha o te raima i hangaia i roto i te wai he 84.8% o tērā i hangaia i roto i te hau, ā, he nui ake te pānga.
Wā tuku: Pipiri-16-2023