Ngā Āhuatanga Ā-tinana me te Matū o te Hydroxyethyl Cellulose
Ngā Āhuatanga Āhua He mā ki te kōwhai mārama te muka, he paura rānei te āhua o tēnei hua, he totoka, kāore he paitini, kāore hoki he reka.
Te ira rewa 288-290 °C (heke)
Kiato 0.75 g/mL i te 25 °C (i te rama)
Wairewatanga Wairewatanga ki te wai. Kāore e wairewa i roto i ngā whakarewa waro noa. Ka wairewatia ki te wai matao me te wai wera, ā, kāore e wairewatia i te nuinga o ngā whakarewa waro. Ka paku rerekē te matotorutanga i roto i te awhe PH 2-12, engari ka heke te matotorutanga ki tua atu i tēnei awhe. He mahi mā te whakamātotoru, te whakatārewatanga, te here, te whakaemulsifying, te horapa, me te pupuri i te makuku. Ka taea te whakarite i ngā otinga i roto i ngā awhe matotorutanga rerekē. He tino pai te wairewatanga tote mō ngā electrolytes.
Hei matū horoi kore-ionic, kei te hydroxyethyl cellulose ēnei āhuatanga e whai ake nei, hei tāpiri atu ki te whakamātotoru, te whakatārewatanga, te here, te mānu, te hanga kiriata, te marara, te pupuri wai me te whakarato i ngā colloid tiaki:
1. Ka wairewa te HEC i roto i te wai wera, i te wai matao rānei, i te pāmahana tiketike, i te wai kohua rānei, me te kore e maturuturu, nō reira he whānuitia ngā āhuatanga wairewa me te matotoru, ā, kāore e wera te wai;
2. Kāore i te ionic, ā, ka taea te noho tahi me te whānuitanga o ngā polymer wairewa-wai, ngā surfactants, me ngā tote. He whakamātotoru colloidal pai rawa atu mō ngā otinga electrolyte kukū-teitei;
3. E rua ngā teitei ake o te kaha pupuri wai i tō te methyl cellulose, ā, he pai ake te whakahaere i te rere.
4. Ki te whakaritea ki te methyl cellulose me te hydroxypropyl methyl cellulose kua mōhiotia, ko te kaha marara o HEC te mea kino rawa atu, engari ko te kaha tiaki colloid te mea tino kaha.
Ngā whakaritenga hangarau me ngā paerewa kounga mō te hydroxyethyl cellulose
Ngā Tuemi: Whakakapinga molar taupū (MS) 2.0-2.5 Makuku (%) ≤5 Kāore e wairewa i te wai (%) ≤0.5 Uara PH 6.0-8.5 Konganuku taumaha (ug/g) ≤20 Pungarehu (%) ≤5 Matotoru (mpa. s) 2% 20 ℃ wairewa 5-60000 mata (%) ≤0.001
Ngā whakamahinga o te hydroxyethyl cellulose
【Whakamahinga 1】Hei matū horoi, hei whakamaroke rapa, hei ārai kiriuhi, hei wai pakaru tūhura hinu, hei whakamarara polystyrene me te polyvinyl chloride, me ētahi atu.
[Whakamahia 2] Whakamahia hei whakamātotoru me te whakaiti i te ngaronga wai mō ngā wai keri wai me ngā wai whakaoti, ā, he pānga whakamātotoru mārama i roto i ngā wai keri tote. Ka taea hoki te whakamahi hei whakaiti i te ngaronga wai mō te sima puna hinu. Ka taea te hono atu ki ngā katote konganuku maha-valent hei hanga i te kirikiri.
[Whakamahia 3] Ka whakamahia tēnei hua hei whakamarara polymeric mō te wai pakaru gel wai-pūtake, te polystyrene me te polyvinyl chloride i roto i te keri pakaru. Ka taea hoki te whakamahi hei whakamātotoru emulsion i roto i te umanga peita, hei hygrostat i roto i te umanga hikohiko, hei aukati i te sima me te kaihoko pupuri makuku i roto i te umanga hanga. He mea here mō te karaihe me te paraihe niho i roto i te umanga uku. He whānuitia hoki te whakamahinga i roto i te tā me te tae, te kakahu, te hanga pepa, te rongoā, te akuaku, te kai, te hikareti, ngā patu pepeke me ngā kaihoko tinei ahi.
[Whakamahinga 4] Whakamahia hei matū horoi, hei ārai colloidal, hei whakaū i te emulsification mō te vinyl chloride, te vinyl acetate me ētahi atu emulsions, tae atu ki te viscosifier, te dispersant, me te whakaū marara mō te rapa. He whānuitia te whakamahinga i roto i ngā paninga, ngā muka, te tae, te hanga pepa, ngā mea whakapaipai, ngā rongoā, ngā patupatu, me ētahi atu. He maha hoki ngā whakamahinga i roto i te ahumahi torotoro hinu me te mīhini.
【Whakamahinga 5】Ko ngā mahi a te Hydroxyethyl cellulose he whakamātotoru, he whakatārewatanga, he here, he whakaemulsifying, he hanga kiriata, he marara, he pupuri wai me te whakarato tiaki i roto i ngā whakaritenga rongoā totoka me te wai.
Ngā whakamahinga o te hydroxyethyl cellulose
Whakamahia i roto i ngā paninga whare, ngā mea whakapaipai, ngā paraihe niho, ngā matū horoi, ngā whakamaroke rapa, ngā kaihoko tiaki colloidal, ngā wai pakaru hinu, ngā mea whakamarara polystyrene me te polyvinyl chloride, me ētahi atu.
Pepa Raraunga Haumaru Rauemi Hydroxyethyl Cellulose (MSDS)
1. Tērā pea ka pahū te puehu i tēnei hua. Mēnā he nui te rahinga, he nui rānei, kia tūpato kia kaua e waiho te puehu kia tau, kia kaua hoki e whakatārewatia ki te rangi, kia matara atu hoki i te wera, i ngā mura, i ngā mura ahi me te hiko pateko. 2. Āraia te paura methylcellulose kia kaua e uru, kia kaua hoki e pā ki ngā kanohi, ā, mauria he kopare tātari me ngā mōhiti tiaki i te wā e whakamahia ana. 3. He tino pahekeheke te hua ina mākū, ā, me horoi wawe te paura methylcellulose i maringi, me te rongoā ārai-paheke.
Ngā āhuatanga rokiroki me te kawe o te hydroxyethyl cellulose
Te tākai: putea paparanga-rua, putea pepa hiato o waho, putea kiriata polyethylene o roto, taumaha kupenga 20kg, 25kg rānei mō ia putea.
Te rokiroki me te kawe: Rokiroki ki te wāhi maroke, hauhautanga hoki i roto i te whare, ā, kia tūpato ki te makuku. Hei tiaki i te ua me te rā i te wā e kawe ana.
Tikanga whakarite o te hydroxyethyl cellulose
Tikanga 1: Ruia ngā miro miro mata, ngā mea kua oti te whakapai, ki roto i te 30% o te wai rēmana, tangohia i muri i te hawhe haora, ka pēhi. Pēhi kia tae te ōwehenga o te wai kawakore ki te 1:2.8, ka neke ki roto i te taputapu kuru hei kuru. Tāpirihia te muka kawakore kuru ki roto i te ipu wai. Kua hiritia, kua tangohia te wai, ka whakakīia ki te hauota. Whai muri i te whakakapinga o te hau i roto i te ipu wai ki te hauota, pēhi ki roto i te wai ethylene oxide kua whakamataohia i mua. Tauhohe i raro i te whakamatao i te 25°C mō te 2 haora kia puta te hydroxyethyl cellulose mata. Horoia te hua mata ki te waipiro ka whakatikatika i te uara pH ki te 4-6 mā te tāpiri waikawa acetic. Tāpirihia te glyoxal hei whakawhiti me te pakeke, horoia wawe ki te wai, ā, i te mutunga ka hurihia ki te porotītaha, ka whakamaroke, ka huri hei puta te hydroxyethyl cellulose tote-iti.
Tikanga 2: He pūhui taiao te cellulose kawakore, kei roto i ia mowhiti turanga muka e toru ngā rōpū hydroxyl, ko te rōpū hydroxyl tino kaha ka tauhohe hei hanga cellulose hydroxyethyl. Ruia ngā miro mata, ngā penupenu kua whakapaia rānei ki roto i te 30% wai houra caustic, tangohia mai, ka pēhi i muri i te hawhe haora. Kōpeketia kia tae te ōwehenga o te wai kawakore ki te 1:2.8, kātahi ka kuru. Tāpirihia te cellulose kawakore kua pau ki roto i te ipu tauhohenga, hiritia, whakawetohia, whakakīia ki te hauota, ka mahi anō i te whakaweto me te whakakī hauota kia tino whakakapia te hau i roto i te ipu. Pēhia ki roto i te wai ethylene oxide kua whakamataohia, tāpirihia te wai whakamatao ki roto i te uhi o te ipu tauhohenga, ka whakahaere i te tauhohenga i te 25°C mō te 2 haora kia whiwhi ai i te hydroxyethyl cellulose mata. Ka horoia te hua mata ki te waipiro, ka whakakorengia ki te pH 4-6 mā te tāpiri waikawa acetic, ka honoa ki te glyoxal hei pakeke. Kātahi ka horoia ki te wai, ka whakamarokehia mā te centrifugation, ka whakamarokehia, ka paura kia whiwhi ai i te hydroxyethyl cellulose. Te kai o ngā rauemi mata (kg/t) miro miro, te penupenu iti rānei 730-780 wai houra (30%) 2400 waikura etilena 900 waipiro (95%) 4500 waikawa acetic 240 glyoxal (40%) 100-300
Ko te Hydroxyethyl cellulose he paura ma, he kowhai rānei, kāore he kakara, he reka, he ngāwari te rere, ka wairewa i roto i te wai matao me te wai wera, ā, kāore e wairewa i te nuinga o ngā whakarewa waro.
Ko te Hydroxyethyl cellulose (HEC) he mā, he kōwhai mārama rānei, kāore he kakara, he totoka muka, he paura rānei, kāore he paitini, ka hangaia mā te tauhohenga etherification o te cellulose kawakore me te ethylene oxide (chlorohydrin rānei). He cellulose ethers wairewa kore-ionic. Nā te mea he pai ngā āhuatanga o te HEC ki te whakamātotoru, te whakatārewa, te horapa, te whakaemulsifying, te here, te hanga kiriata, te tiaki i te makuku me te whakarato colloid tiaki, kua whānuitia te whakamahinga i roto i te tūhuratanga hinu, te paninga, te hanga, te rongoā, te kai, te kakahu, te pepa me te polymer Polymerization me ētahi atu mara. Tere tatari 40 mata ≥ 99%; pāmahana whakangawari: 135-140°C; kiato kitea: 0.35-0.61g/ml; pāmahana pirau: 205-210°C; tere mura puhoi; pāmahana taurite: 23°C; 50% 6% i te rh, 29% i te 84% rh.
Me pēhea te whakamahi i te hydroxyethyl cellulose
i tāpirihia tika i te wā whakaputa
1. Tāpirihia he wai mā ki tētahi pākete nui kua whakamaua ki tētahi mīhini kutikuti teitei.
Te pūhui hauwaioraitiri
2. Tīmata ki te whakaoho tonu i te tere iti, ā, āta tātarihia te hydroxyethyl cellulose ki roto i te otinga kia ōrite.
3. Me whakaoho tonu kia mākū katoa ngā matūriki.
4. Kātahi ka tāpirihia te kaihoko tiaki uira, ngā tāpiringa taketake pēnei i ngā tae, ngā āwhina marara, te wai haukini.
5. Whakaohokia kia memeha rawa te hydroxyethyl cellulose (ka tino piki ake te matotoru o te wairewa) i mua i te tāpiri i ētahi atu wāhanga ki te tauira, ka huri kia oti ra ano te hanga.
Kua rite ki te waipiro whaea
Ko tēnei tikanga he whakarite i te wai whaea me te kukū teitei ake i te tuatahi, kātahi ka tāpirihia ki te peita rapa. Ko te painga o tēnei tikanga he ngāwari ake, ā, ka taea te tāpiri tika ki te peita kua oti, engari me penapena tika. He rite ngā mahi ki ngā Mahi 1-4 i te Tikanga 1, ko te rerekētanga kāore he take ki te whakaoho kia memeha rawatia hei wai mātotoru.
Pāreti mō te phenology
Nā te mea he ngoikore ngā whakarewa rauropi mō te hydroxyethyl cellulose, ka taea te whakamahi i ēnei whakarewa rauropi hei whakarite i te poro. Ko ngā whakarewa rauropi e whakamahia whānuitia ana ko ngā wai rauropi pērā i te ethylene glycol, te propylene glycol me ngā kaihanga kiriata (pērā i te ethylene glycol, te diethylene glycol butyl acetate rānei) i roto i ngā hanganga peita. He ngoikore hoki te wai hukapapa, nō reira he maha ngā wā ka whakamahia te wai hukapapa me ngā wai rauropi hei whakarite i te poro. Ka taea te tāpiri tika i te hydroxyethyl cellulose o te poro ki te peita, ā, kua wehea te hydroxyethyl cellulose ka pupuhi i roto i te poro. Ina tāpirihia ki te peita, ka rewa tonu, ā, ka mahi hei whakamātotoru. Whai muri i te tāpiri, me whakaoho tonu kia rewa katoa te hydroxyethyl cellulose, kia ōrite. Ko te tikanga, ka hangaia te poro mā te whakaranu i ngā wāhanga e ono o te whakarewa rauropi, te wai hukapapa rānei me te wāhanga kotahi o te hydroxyethyl cellulose. I muri i te 6-30 meneti, ka waikura te hydroxyethyl cellulose, ā, ka pupuhi mārama. I te raumati, he tino teitei te pāmahana o te wai, nō reira kāore e pai te whakamahi i te poro.
Ngā whakatūpato mō te hydroxyethyl cellulose
I te mea he paura, he totoka rānei te hydroxyethyl cellulose i tukatukahia ki te mata, he māmā noa iho te whakahaere me te whakarewa ki te wai mena ka arohia ngā mea e whai ake nei.
1. I mua atu, ā, i muri i te tāpiri i te hydroxyethyl cellulose, me whakaoho tonu kia mārama rawa te otinga.
2. Me āta tātari ki roto i te tāke whakaranu, kaua e tāpiri tika i te nui o te hydroxyethyl cellulose, te hydroxyethyl cellulose rānei kua hanga hei puranga me te pōro ki roto i te tāke whakaranu. 3. He mārama te hononga o te pāmahana wai me te uara PH i roto i te wai ki te memeha o te hydroxyethyl cellulose, nō reira me aro nui atu.
4. Kaua e tāpirihia ētahi matū kawakore ki te ranunga i mua i te whakamahanatanga o te paura hydroxyethyl cellulose ki te wai. Mā te whakanui ake i te uara pH i muri i te whakamahanatanga ka āwhina i te whakarewa.
5. Tāpirihia he rongoā ārai harore ki te wāhi e taea ai i te wā e taea ai.
6. Ina whakamahia te hydroxyethyl cellulose matotoru-teitei, kaua te kukū o te wai whaea e neke ake i te 2.5-3%, ki te kore ka uaua te whakahaere i te wai whaea. Ko te hydroxyethyl cellulose kua tukatukahia i muri i te maimoatanga he uaua ki te hanga i ngā puranga, i ngā porowhita rānei, ā, e kore hoki e hanga i ngā porowhita kore-rewa i muri i te tāpiri wai.
Ko te tikanga, e whakamahia ana hei whakamātotoru, hei tiaki, hei piri, hei whakaū me te tāpiri mō te hanga i te emulsion, te tiēre, te hinu whakahinuhinu, te hinu kiri, te horoi kanohi, te suppository me te papa, ā, e whakamahia ana hoki hei gel hydrophilic me te rauemi angaanga 1. Te hanga i ngā whakaritenga tuku-roa momo angaanga. Ka taea hoki te whakamahi hei whakaū i roto i te kai.
Te wā tuku: Hui-tanguru-02-2023