Me pai te hototahi o te whakamātotoru mō te peita rapa ki te matū polymer emulsion, ki te kore ka iti te nui o te reticulate o te kiriata paninga, ā, ka puta he kohikohinga matūriki kore e taea te huri, ka whakaiti i te matotoru me te whakakiki i te rahi o te matūriki. Ka whakarerekē te whakamātotoru i te utu o te emulsion. Hei tauira, ka pā kino te whakamātotoru cationic ki te emulsifier anionic kia pakaru ai te emulsion. Me whai i ngā āhuatanga e whai ake nei te whakamātotoru pai mō te peita rapa:
1. Iti te horopeta me te matotoru pai
2. He pai te pumau o te rokiroki, kāore he whakahekenga matotoru nā te mahi a ngā whākōkī, ā, kāore he whakahekenga matotoru nā ngā huringa o te pāmahana me te uara PH
3, he pai te pupuri wai, kāore he āhuatanga mirumiru kitea
4. Kāore he pānga taha ki ngā āhuatanga o te kiriata pēnei i te ātete ki te mirimiri, te kanapa, te kaha huna me te ātete wai
5. Kāore he waikura e rere ana
He mea nui te hangarau whakamātotoru o te peita rapa hei whakapai ake i te kounga o te rapa me te whakaiti i te utu. He mea tino pai te Hydroxyethyl cellulose hei whakamātotoru, he maha ngā pānga ki te whakamātotoru, te whakaū me te whakatikatika i te reo o te peita rapa.
I roto i te tukanga whakaputa peita rapa,te hauwaitoiretira o te pūtau (HEC)Ka whakamahia hei whakamarara, hei whakamātotoru, hei whakatārewatanga tae hei whakau i te matotoru o te hua, hei whakaiti i te whakaemi, hei whakangawari i te kiriata peita, ā, hei whakau ake i te kaha o te peita rapa. He pai te rheology, ka taea te tu atu ki te kaha kutikuti teitei, ā, ka taea te whakarato i te taumata pai, te ātete ki te rakuraku me te ōritetanga o te tae. I taua wā anō, he tino pai te mahi a te HEC, ā, he pseudoplasticity te peita rapa kua whakamātotoruhia ki te HEC, nō reira ko ngā tikanga hanga pēnei i te paraihe, te hurihuri, te whakakī, me te rehu he painga o te penapena mahi, kāore e ngāwari ki te horoi me te totoro, ā, he iti ake te tauhiuhi. He tino pai te whanaketanga tae o te HEC. He tino pai te whakaranu ki te nuinga o ngā tae me ngā here, ka taea ai te hanga peita rapa me te ōritetanga tae me te pumau pai. Nā te maha o ngā whakamahinga i roto i te hanganga, he ether kore-ionic. Nō reira, ka taea te whakamahi i roto i te whānuitanga pH whānui (2~12), ā, ka taea te whakaranu ki ngā wāhanga o ngā peita rapa whānui pēnei i ngā tae tauhohe, ngā tāpiri, ngā tote wairewa, ngā electrolytes rānei.
Kāore he pānga kino ki te kiriata paninga. Nā te mea he mārama ngā āhuatanga o te wairewa HEC wai, kāore e ngāwari te pahuka i te wā e hangaia ana, e hangaia ana hoki, ā, he iti ake te āhua o ngā kōhao puia me ngā kōhao iti.
He pai te pumau o te rokiroki. I roto i te tukanga rokiroki mō te wā roa, ka taea te pupuri i te horapa me te whakatārewatanga o te tae, ā, kāore he raruraru o te tae mānu me te puāwai. Ina he iti noa te paparanga wai i runga i te mata o te peita, ā, ka tino rerekē te pāmahana rokiroki. He pumau tonu tōna matotoru.
Ka taea e te HEC te whakanui ake i te uara PVC (te kukū o te rahinga tae) o te hanganga totoka ki te 50-60%. Hei tāpiri, ka taea hoki te whakamahi i te HEC hei whakamātotoru i te peita wai.
I tēnei wā, ko ngā whakamātotoru e whakamahia ana i roto i ngā peita rapa kounga teitei o te whare he whakamātotoru HEC me te kiriaku (tae atu ki ngā polyacrylates, ngā whakamātotoru homopolymer, copolymer emulsion rānei o te waikawa kiriaku me te waikawa methacrylic) mai i tāwāhi.
Ka taea te whakamahi i te Hydroxyethyl cellulose mō
1. Hei whakapiripiri whakamarara, hei whakapiripiri tiaki rānei
Ko te tikanga, ka whakamahia te HEC me te matotoru o te 10 ki te 30 mPaS. Ka taea te whakamahi i te HEC tae atu ki te 300mPa·S me ngā surfactants anionic, cationic rānei, ā, he pai ake te pānga marara. Ko te nui tohutoro ko te 0.05% o te papatipu o te monomer.
2, hei whakamātotoru
Whakamahia te 15000mPa. Ko te horopeta tohutoro o te HEC matotoru teitei i runga ake i te s he 0.5 ki te 1% o te taumaha katoa o te paninga rapa, ā, ka taea e te uara PVC te eke ki te 60%. I roto i te peita rapa, ko te HEC e whakamahia ana he 20Pa,s, ā, ko ngā āhuatanga rerekē o te peita rapa te mea pai rawa atu. He iti ake te utu o te whakamahi noa i te HEC i runga ake i te 30000Pa.s. Heoi, kāore i te pai te whakataurite me ētahi atu āhuatanga o te peita rapa. Mai i te tirohanga o ngā whakaritenga kounga me te whakaiti utu, he pai ake te whakamahi tahi i te HEC matotoru reo me te HEC matotoru teitei.
3. Tikanga whakauru ki te peita rapa
Ka taea te tāpiri i te HEC kua maimoatia ki te mata i roto i te paura maroke, i te ahua parai rānei. Ka tāpirihia tika te paura maroke ki te huri tae. Me 7, kia iti iho rānei te pH o te pūwāhi tāpiri. Ka taea te tāpiri i ngā wāhanga kawakore pērā i ngā mea whakamarara i muri i teHECkua mākū, kua marara katoa. Me whakaranu te paru i hangaia ki te HEC ki roto i te paru i mua i te wā e ranea ai te HEC ki te whakamakuku me te matotoru ki tētahi āhua kāore e taea te whakamahi. Ka taea hoki te whakarite i ngā paru HEC me ngā kaihoko whakakotahi i ahu mai i te glycol.
4. Ārai-haehae o te peita rapa
Ka pirau te HEC wairewa-wai ina pāngia e ngā pokepokea ai e hangai ana ki te cellulose me ōna hua. Kāore e ranea te tāpiri i ngā mea tiaki ki te peita anake, me kore he whākōkī i roto i ngā wāhanga katoa. Me noho ma, me noho pai hoki ngā waka whakaputa peita rapa, ā, me horoi auau i ngā taputapu katoa ki te 0.5% formalin, ki te 0.1% rānei te otinga mercury.
Wā tuku: Paenga-whāwhā-25-2024