Tetrahydrofuran

Tetrahydrofuran, whakarāpopototia ko THF, he matū waro heterocyclic. Nō te akomanga ether, ko te matū kakara furan te hua hauwai katoa.

Ko te Tetrahydrofuran tētahi o ngā ether polar kaha rawa atu. Ka whakamahia hei whakarewa polar reo i roto i ngā tauhohenga matū me te tango. He wai kore tae, he pūngāwerewere i te pāmahana rūma, ā, he kakara rite ki te ether. Ka wairewa ki te wai, te etanoru, te ether, te acetone, te benzene me ētahi atu whakarewa tino waro, e mōhiotia ana ko te "whakarewa whānui". I te pāmahana rūma, ka taea te whakaranu i te wai, ko ētahi pakihi tauhohenga turekore ko te whakamahi i tēnei wāhi hei whakamahi i te tauhohenga tetrahydrofuran wai. Nā te āhua o te THF ki te hanga i ngā peroxide i te rokiroki, ko te antioxidant BHT he mea tāpiri noa ki ngā hua ahumahi. Ko te ihirangi makuku ≦0.2%. He āhuatanga o te iti o te paitini, te iti o te kohua me te pai o te rere.

Ngā āhuatanga matū:He wai mārama, kāore he tae, he kakara etera. Kua konatunatua ki te wai, te waipiro, te ketone, te benzene, te ester, te etera, me ngā warowaihā.

Ngā tono matua:

1. Ngā rauemi mata o te tauhohenga hanga spandex:

Ka taea te whakamahi i te Tetrahydrofuran hei polycondensation (mā te whakapūtanga mowhiti cationic) ki roto i te polytetramethylene ether diol (PTMEG), e mōhiotia ana ko te tetrahydrofuran homopolyl. Ko te PTMEG me te toluene diisocyanate (TDI) he mea hanga ki te ātete kakahu, te ātete hinu, te mahi pāmahana iti, te kaha teitei o te rapa motuhake; I hangaia te rauemi polyether polyester elastic ki te dimethyl terephthalate me te 1, 4-butanediol. Ko te PTMEG me te taumaha ngota whanaunga o te 2000 me te p-methylene bis (4-phenyl) diisocyanate (MDI) hei hanga muka polyurethane elastic (muka SPANDEX), rapa motuhake me ētahi rauemi mata paninga motuhake. Ko te whakamahinga nui o te THF ko te hanga PTMEG. E ai ki ngā tatauranga matawhā, tata ki te 80% o te THF o te ao e whakamahia ana mo te hanga PTMEG, ā, ko te PTMEG te nuinga e whakamahia ana mo te hanga muka spandex.

2. He whakarewa me te mahi tino pai:

He whakarewa tino pai te Tetrahydrofuran, he tino pai mō te whakarewa i te PVC, te polyvinylidene chloride me te butyl aniline, he whānuitia te whakamahinga hei paninga mata, hei paninga ārai-waikura, hei waituhi tā, hei whakarewa rīpene me te paninga kiriata, ā, ka taea e Chemicalbook te whakahaere i te matotoru o te paparanga konumohe me te kanapa i roto i te whakakikorua hiko o te wai konumohe. Hei whakarewa rīpene, paninga mata PVC, horoi i te tauhohenga PVC, tango i te kiriata PVC, paninga cellophane, waituhi tā kirihou, paninga polyurethane thermoplastic, piripiri, he mea noa te whakamahinga i roto i ngā paninga mata, paninga tiaki, waituhi, tangohanga me ngā kaihoko maimoatanga mata mō te hiako hangai.

3. Whakamahia hei rauemi mata mō te hanga rauropi pērā i ngā rongoā:

Mō te hanga tetrahydrothiophene, 1.4- dichloroethane, 2.3- dichlorotetrahydrofuran, valerolactone, butyl lactone me te pyrrolidone. I roto i te umanga rongoā, ka whakamahia hei hanga i te coughbixin, rifumycin, progesterone me ētahi rongoā homoni. Ka hangaia te Tetrahydrothiophenol mā te maimoatanga hauwai sulfide, ka taea te whakamahi hei kaihoko kakara i roto i te hau wahie (tāpiri tautuhi), ā, koia hoki te whakarewa matua i roto i te umanga rongoā.

4. Ētahi atu Whakamahinga:

Ko te whakarewa chromatography (chromatography permeation gel), e whakamahia ana mō te reka hau māori, te whakarewa tango acetylene, te whakaū mārama rauemi polymer, me ētahi atu. Nā te whānui o te whakamahinga o te tetrahydrofuran, inā koa i ngā tau tata nei, me te tere o te tipu o te umanga polyurethane, kei te piki haere te tono mō te PTMEG i tō tātou whenua, ā, kei te tere hoki te tipu o te tono mō te tetrahydrofuran.

Tūponotanga:Kei roto te Tetrahydrofuran i te akomanga 3.1 wai mura, he iti te pūmahana mura, he tino mura, ka taea e te kohu te hanga ranunga pahū me te hau, ko te rohe pahū he 1.5% ~ 12% (wāhanga rōrahi), me te riri. Ko tōna āhua mura he tūponotanga haumaru hoki. Ko te āwangawanga nui rawa atu mō te haumaru o te THFS ko te puhoi o te hanganga o ngā peroxide waro tino pahū ina pā ki te hau. Hei whakaiti i tēnei tūponotanga, he maha ngā wā ka tāpirihia ngā THFS e wātea ana i te hokohoko ki te 2, 6-di-tert-butylp-cresol (BHT) hei aukati i te hanga o ngā peroxide waro. I taua wā anō, kaua e whakamarokehia te THF nā te mea ka kukū ngā peroxide waro ki roto i te toenga whakatō.

Ngā whakatūpato mō te mahi:mahi kati, hauhautanga katoa. Me whakangungu motuhake ngā kaiwhakahaere, ā, me piri pono ki ngā tikanga whakahaere. E taunakihia ana kia mau ngā kaiwhakahaere i tētahi kopare hau momo tātari (haurua kopare), he mōhiti tiaki haumaru, he kākahu ārai-pūmau, me ngā karapu rapa ātete-hinu. Puritia kia matara atu i te ahi, i te pūtake wera, i te kore momi hikareti i te wāhi mahi. Whakamahia ngā pūnaha me ngā taputapu hauhautanga ātete-pahū. Āraia te mamaoa kei puta ki te hau o te wāhi mahi. Āraia te pa atu ki ngā waikura, ngā waikawa me ngā kawakore. Me whakahaere te tere rere i te wā whakakī, ā, me whai taputapu whenua hei ārai i te kohikohi hiko pūmau. I te wā e whakahaere ana, me mahi te uta māmā me te tango i te mea hei ārai i te kino o ngā takai me ngā ipu. Me rite ki te momo me te nui o ngā taputapu ahi me ngā taputapu maimoatanga ohorere turuturu. Tērā pea kei roto i tētahi ipu kau he toenga kino.

Ngā whakatūpato rokiroki:I te nuinga o te wā, he ārai kei roto i te taonga. Penapenahia ki roto i tētahi whare putunga hauhautanga, hauhautanga. Puritia kia matara atu i te ahi me te wera. Kaua te pāmahana o te whare putunga e neke ake i te 30℃. Me hiri te takai, kaua hoki e pā ki te hau. Me penapena motuhake mai i ngā mea whakahāwea, ngā waikawa me ngā kawakore, ā, kaua e whakaranua. Kua whakamahia ngā rama me ngā whakaurunga hauhautanga ātete-pahū. Kaua e whakamahia ngā taputapu me ngā taputapu miihini e ngāwari ana ki te mura. Me whai taputapu rongoā ohorere turuturu me ngā rauemi pupuri e tika ana te wāhi rokiroki.

Tākai: 180KG/pahu