I roto i te matū pūmua, ko ngā polyol motuhake he poraka hanga nui. Ka tauhohe ngā rōpū hydroxyl ki ngā isocyanates hei hanga hononga urethane kaha. Ka hangaia e MOFAN ngā raupapa polyether hangarau me ngā polyethylene glycols pai rawa atu (PEG) mō ngā pūnaha ahumahi. Ka whakamahia e ngā miihini matū ēnei wāhanga ki te whakamātao pakari, te pahuka ngāwari, me ngā elastomers polyurethane.

E whakaatu ana tēnei tipu i te tauine ōhanga o ngā polyol puta noa i ngā ahumahi hangahanga.

Ngā Whakaaro Matua

• Ngā polyol motuhakehanga hononga urethane kaha ki ngā isocyanates hei hanga polyurethanes mahi teitei.
• He pai ake te ātete o ngā polyol polyether ki te kino o te wai i ngā polyol polyester i ngā taiao mākū.
• Ka whakanuia e ngā polyol mahi-teitei te mātotoru hononga whakawhiti hei whakanui ake i te pakeke o te rauemi me te ātete ki te wera.
• Ka whakaitihia te maha o te urethane e ngā diol taumaha-ngota teitei kia noho ngāwari ai ngā hiri i ngā pāmahana i raro i te kore.
• He kaha te ātete wera me te ātete mura o ngā polyol kakara mō ngā panera whakamahana wera pakari.
• Ka whakaratohia e ngā polyethylene glycols parakore he hinu whakahinuhinu maeneene me te mana ārai-patū puta noa i ngā ahumahi tukatuka kanorau.
• Mā te iti o te pāhare pāporo i roto i ngā rauemi mata ka ārai i ngā tauhohenga matū kāore e hiahiatia i te wā e hangaia ana i te wheketere.

Te Mārama ki ngā Polyol Motuhake i roto i te Matū Ahumahi

Hanganga Matū o ngā Polyether me ngā Polymers PEG

Te hoahoa o ngā matū matū polymerngā polyol motuhakehei hanga rauemi pono, pakari hoki. Ko te hoahoa ngota ngota e whakawhirinaki ana ki ngā hononga etera auau e whakarato ana i te manawanui piko me te kaha hihiri. Mā te tauhohenga o ngā kaiwhakaoho me ngā etera huringa ka hangaia he mekameka kanorau kua whakaritea mō ngā hanganga ahumahi.

Mā te whiriwhiri i waenga i ngā polyol polyether me ngā polyol polyester ka tino whakarerekē i te ātete o te tuara. He pai ake te ātete o ngā hanganga polyether ki te pakaru wai i roto i ngā taiao makuku. I tua atu, he nui te ātete o ngā hononga ester i roto i ngā polyol polyester ki te pakaru miihini. Ka whakaratohia e MOFAN ngā polyol mahi e whakataurite ana i te manawanui matū me te whanonga tukatuka tika.

Te Tūranga o ngā Polyol i roto i ngā Pūnaha Polyurethane

Ko te hanganga o te polyurethane mahi-teitei e whakawhirinaki ana ki te tāpiri stoichiometric o ngā rōpū hydroxyl hohe ki ngā pūhui mahi tauhohe. Ka puta te tauhohenga tuatahi ina tūtaki te rōpū hydroxyl whakamutunga ki te ngota isocyanate. Ka hangaia e tēnei taahiraa he hononga urethane kaha i te mekameka polymer e tipu haere ana.

rōpū hydroxyl + isocyanate -> hononga urethane

Ka whakakotahi ngā kaihanga matū i ngā polyol rerekē me ngā momo isocyanate motuhake hei whakahaere i te mātotoru o te pahuka, te pakeke o te polymer, me te ātete wera. Me taurite ngā tere tauhohenga nekeneke mō ngā ranunga kapia wai hei ārai i te whakapūpū wawe i te wā tukatuka. Mā te tāpiri i ngā tāpiringa honohono ka tere ake te wā whakaora, ka whakapai ake hoki i te pakari piripono whakamutunga. Ka whakaratohia e MOFAN ngā taumata hangarau motuhake e whakarite ana i te tukatuka ōrite puta noa i ngā taputapu whakaputa aunoa.

Ngā Whakarōpūtanga Mahi mā te Taumaha Ngota me te Tau Hydroxyl

Ko ngā uara hauwaiora e ārahi ana i te mātotoru hononga whakawhiti me ngā āhuatanga ā-tinana o ngā whatunga thermoset kua rongoatia. He nui ake ngā tau hauwaiora o ngā tāpiringa taumaha ngota iti, ka hangaia he wāhanga pūmua pakari me ngā mātotoru hononga whakawhiti piri. He iti ngā tau hauwaiora o ngā diol taumaha ngota teitei, ka puta he wāhanga elastomeric ngohengohe e tika ana mō ngā hiri.

Mā te whiriwhiri i ngā tau hydroxyl e tika ana ka taea e ngā kaihangarau te whakarite tika i te ngāwari o te miihini me te whanonga kume. Ko ngā taumaha ngota ngota teitei ake ka whakaiti i te kukū whānui o te rōpū urethane i roto i te matrix. Ko ngā taumaha ngota ngota iti ake ka whakanui ake i te ihirangi wāhanga mārō, ka whakanui ake i te ātete wera me te kaha kawenga pēhi. Ka hangaia e MOFAN ngā polyol hangarau puta noa i ngā taumaha ngota ngota whānui hei whakatutuki i ngā whakaritenga hanga ahumahi tino tika.

Ngā Momo Matua me ngā Āhuatanga Ā-tinana o ngā Hanganga Polyether

Ka whakaratohia e ngā polyol motuhake te whanonga tukatuka kua whakaritea me te roa o te ora ratonga puta noa i ngā tono matū ahumahi.Ngā polyols polyetherKei roto i ngā mekameka ngota ngā hononga hāora. Ka tukuna e ēnei here etera he pumau waikura tino pai i roto i ngā taiao tukatuka mākū. He maha ngā wā ka whakatauritea e ngā miihini matū ēnei pūnaha ki ngā polyol polyester. Ahakoa he kaha te pakari o te tinana o ngā polyol polyester, kāore i te rite te pumau waikura o ngā polyol polyester. Ka tere ake te pirau o ngā polyol polyester ina pāngia e te makuku tonu. Ka hoahoa a MOFAN i ngā whakatakotoranga motuhake hei tiaki i ngā wāhanga hihiri mai i te pirau wai me te pānga matū kino.

Ngā Hononga-Mahi-Tiketike me ngā Diol Hanganga

Ko ngā hanganga pūmua e whakawhirinaki ana ki te hoahoa ngota tuatahi hei whakatutuki i ngā āhuatanga hangarau motuhake. Ka hangaia e ngā hononga whakawhiti mahi-teitei he whatunga toru-ahu matotoru, ko ngā diol hanganga ia ka hangaia he mekameka pūmua rārangi roa.

Ngā Whakarei i te Hononga me te Kaha Mīhini

Ka whakanuia e ngā hononga whakawhiti mahi-teitei te maha o ngā pae hydroxyl tauhohenga mō ia ngota. Ka whakanuia e te mahi hydroxyl i waenga i te 2.0 me te 4.0 te kiato hononga whakawhiti i te wā o te polymerization. Ka whakapai ake te kiato hononga whakawhiti teitei i te kaha piri, te pakeke ā-tinana, me ngā āhuatanga miihini whānui. Ka tukuna e MOFAN te PF-040, PF-450, me te PF-1050 hei whakapai ake i te piri o te matrix. Ka whakarei ake ēnei tāpiri i te ātete wera i roto i ngā piripiri wāhanga-rua, ngā whakarewa hanganga, me ngā paninga papa tiaki.

Ngā Diol Whakaroa-Tiketike mō ngā Pūnaha Whakarerekē-Iti

Ko ngā tono iti-modulus e hiahia ana ki ngā polymer raina me ngā taumaha ngota teitei. Ko ngā diol taumaha-ngota teitei pēnei i te MOFAN PF-2080 me te PF-2120 e whakarato ana i te ngāwari whakamiharo me te roa teitei. Ka whakaitihia e ēnei diol hanganga te kukū urethane katoa i te tuara o te polymer. Ko te iti o te maha o ngā rōpū urethane ka puta he wāhanga ngohengohe e pupuri ana i te ngāwari pāmahana iti ki raro ki te -60°C. Ka whakamahia e ngā kaihanga hanganga ēnei diol raina ki te hanga hiri hononga me ngā elastomers polyurethane hihiri.

Ngā Kaiwhakatuwhera Pūtau, Ngā Tohu Wai-ā-wai, me te Tauhohenga-Tiketike

Ka whakarerekē ngā momo tāpiri motuhake i ngā hanganga o roto o te pūtau pahuka me te tere o te tauhohenga mata. Ko te mahi, ngā uara hydroxyl, me te matotoru hei ine matua hei whakarōpū i ēnei polyol motuhake.

Ka ārai te taumata whakatuwheratanga pūtau PF-3500 i te whakahekenga hau i roto i ngā pahuka ngāwari iti-kiato. Kei roto i te taumata hydrophilic PF-010 ngā rōpū hydroxyl hohe e tukatuka maeneene ana i roto i ngā hydrogel pupuhi-wai. Ka whakanui ake te taumata tauhohenga teitei PF-2802 i te kaha haehae i roto i ngā kapu hu kua whakarewaina. Ka pupuri ēnei polyol motuhake i ngā āhuatanga ā-tinana pumau i roto i ngā huringa whakaputa tere-tiketike.

Ngā Polyol Kakara me ngā Novolac mō te Ārai i te Mura

Ko te whakamātao wera pakari e hiahia ana ki te tere tukatuka tere, te kaha hanganga pakari, me te manawanui ahi nui. Ka whakauruhia e ngā polyol kakara me ngā polyol novolac ngā mowhiti kakara ki roto i te mekameka polymer matua. Ko ngā hua pēnei i te MOFAN PF-800, PF-1380, me te PF-585 ka tukuna he mahi wera pai ake i ngā polyol tikanga.

Ka tauhohe pai ngā polyol kakara ki ngā rōpū isocyanate hohe i te wā e tukatukahia ana te pahuka rehu. Ka tukuna e te whatunga polymer te hanganga polyphenolic tiaki i ngā pāmahana teitei. Ka hangaia e tēnei tauhohenga matū he paparanga waro tiaki i te wā e pāngia ana e te wera. Ko ngā hononga waro-waro kaha e whakarato ana i te ātete wera, te ātete matū tino pai, me te ātete mura nui. Ka whakawhirinaki ngā tono ahumahi ki ēnei poraka hanga kakara mō ngā panera whakamahana pakari, ngā papa polyisocyanurate, me ngā elastomers polyurethane matotoru. Ka whakaratohia e ngā rauemi whakamutunga he roa te ora ratonga, he tautoko hanganga pono, me te ātete matū tonu i roto i ngā taiao ahumahi kaha.

Ngā Polyethylene Glycol Pai Rawa i roto i te Tukatuka Ahumahi

Tirohanga Whānui o te Raupapa Hua MOFAN PEG

Ngā karaka polyethylenehe maha ngā mahi hei pūmua kore-ionic puta noa i ngā ahumahi tukatuka kanorau. Ka tukuna e MOFAN he raupapa katoa o ngā Polyethylene Glycols pai rawa atu mai iPEG1000 to PEG20000Kei roto i ēnei rauemi polyether rārangi ngā rōpū hydroxyl whakamutunga hohe. Ka whakamahia ēnei hua e ngā kaihanga hei kaihoko ārai-pūmau, hei hinu whakahinuhinu ahumahi, hei kaihoko tuku, hei takawaenga rauemi mata. Ka whakawhirinaki ngā tukanga matū ki ēnei mekameka pono hei whakahaere i te pupuri makuku me te whakahinuhinu i roto i ngā hua kua oti.

Ka tīpakohia e ngā kaihanga ahumahi ngā tohu polyglycol motuhake i runga i ngā roa mekameka me ngā āhuatanga mahi e hiahiatia ana. Ka whakamahia e ngā ahumahi kakahu, pepa, mahi whakarewa, rapa, me te rongoā ēnei matū polyether hei whakapai ake i te pai o te tukatuka. Ko ngā tohu taumaha ngota iti ka whakarato i te kaha ki te utu me te mahi makuku. Ko ngā tohu taumaha ngota teitei ka whakarato i te matotoru tinana teitei me te kaha here kaha. Ka whakarite a MOFAN i ia tohu matū kia tutuki ai ngā whakaritenga tinana tino pakari puta noa i ngā taputapu hanga aunoa.

Ngā Paerewa Parakore me te Whakahaere Pāhare Pāhare

Ko te hanganga matū me tino parakore ngā rauemi mata kia taea ai te whakarite i ngā tere tauhohenga puranga ka taea te whakahoki. Ko ngā toenga whakakorikori kāore e hiahiatia ana pērā i ngā iona pāhare pākawa ka whakararuraru i ngā tauhohenga matū tairongo. Ka whakahaerehia e te MOFAN ngā taumata pāhare pākawa toenga i roto i ngā tukanga hanga polycondensation. Mā te whakahaere i ngā taumata konganuku iti ka ārai i ngā tauhohenga tuarua kāore e hiahiatia i te wā o te hanganga polymer polyurethane. Ko te iti o te parahanga iona ka pupuri i te matotoru wai pumau i te wā rokiroki.

Ka whakaitihia e ngā tohu hangarau parakore teitei ngā hapa hanganga o ngā whakatakotoranga whakamahinga whakamutunga. Ka whakamātauhia e ngā tikanga whakapumau parakore ia puranga hua hei whakaū i te hanganga matū me te pupuri i ngā paerewa kounga tino pakari. Ka tutuki i ngā kōwhiringa tohu USP/NF ngā whakaritenga monograph a te United States Pharmacopeia mō ngā hua hauora ngawari. Ka haere tahi ngā tuhinga ture katoa me ngā tohu rongoā hei whakarato i te whai i ngā puranga katoa. Mā te wātea o ngā tohu USP/NF, Kai (E1521), me ngā tohu hangarau ka taea e ngā kaihangarau te whiriwhiri i te taumata parakore tika mō ngā whakaritenga tono tika.

Ngā Āhua Tūturu mai i ngā Wai ki ngā Paura

Ko te taumaha ngota o te polyglycol e whakatau ana i tōna āhua ā-tinana i te pāmahana rūma. Ka noho tonu ngā mekameka pūmua poto hei wai rere, ko ngā mekameka roa ia ka totoka hei totoka ware pi, hei paura rānei.

Ka tīpakohia e ngā kaihanga matū ngā āhua ā-tinana hei whakapai ake i ngā tikanga whakahaere whakaputa. Ka rere noa ngā paura mira mā roto i ngā ipu whakaranu maroke aunoa. Ka whakaranua tonutia ngā āhua wai ki roto i ngā awa matū wai me te kore e whakaurua he wera. Ka whakaratohia e ngā whakapiri haurua-totoka he kakano hinu maeneene i roto i te whakaritenga rongoā. Ka whakaratohia e MOFAN ngā āhua ā-tinana ōrite hei whakahaere i te whakaranu matū ahumahi.

Ngā Whakamahinga Ahumahi o ngā Pūnaha Polyether me PEG

Ngā Piripiri Polyurethane, Ngā Hiri, me Ngā Paninga

Ngā kaiwhakatakoto whakaaro e tīpako anangā polyol motuhakehei hanga i ngā piripiri mahi-teitei, ngā hiri, ngā paninga tiaki, me ngā whakarewa hanganga. I roto i ngā pūnaha CASE, ka hangaia e ngā polyol mahi-rua me ngā polyol mahi-toru ngā whatunga pīwariwari me te whanonga whakamaroke e taea te matapae. He maha ngā wā ka tohua e ngā kaihanga ngā polyol polyether diol me ngā polyol triol me ngā taumaha ngota mai i te 1000 ki te 3000 mō ngā rauemi polyurethane pīwariwari kore-huka. Ka hangaia e ēnei poraka hanga hohe he hononga urethane hihiri e pupuri ana i te kaha i raro i te ahotea miihini auau.

Ka tukuna e ngā polyol polyether pūtake-kotahi te pumau hydrolytic pai rawa atu ki te matū polyester i roto i ngā taiao tukatuka makuku. Ka mau tonu te ngāwari o ngā momo polyether wai i ngā pāmahana i raro i te kore-kore nā te mea he iti te pāmahana whakawhiti karāhe. Hei tauira, ka whakaatuhia e ngā momo polypropylene glycol ngā uara whakawhiti karāhe tata ki te -60°C. Ka tukuna e te Poly(tetramethylene ether) glycol ngā pāmahana whakawhiti karāhe ki raro ki te -75°C. Ka ārai ēnei āhuatanga mahi i te pakaru wawe i roto i ngā hiri hononga o waho. Ka whakamahia e ngā paninga papa ahumahi ngā polyol mahi-teitei hei whakanui ake i te kiato hononga whakawhiti. Ka hangaia e te hononga whakawhiti teitei ake ngā mata matotoru e ātete ana ki ngā turuturu matū kaha me te pakū miihini. Hei tāpiri, ka whakawhirinaki ngā piripiri wāhanga-rua ki ngā kapia iti-matao mō te makuku tere o te mata. Ka hangaia e ēnei pūnaha tauhohe he hononga urethane pakari e hono ana i ngā konganuku, ngā kirihou, me ngā hanganga hanganga kia mau. Ka tukuna e ngā elastomers polyurethane motuhake te manawanui whakahoki nui i roto i ngā wira ahumahi whakarewa me ngā kapu hu moroiti. Hei tāpiri, ka whakaratohia e ngā whakatakotoranga ritenga mō ngā elastomers polyurethane he ātete haehae tino pai i raro i ngā kawenga hihiri taumaha.

Huka Ārai Ngāwari, Ātete-Teitei, me te Pakari

Ko te hanga pahuka e whakawhirinaki ana ki te taurite i te mahi hydroxyl me te roa o te mekameka ki ngā whakaritenga hangarau motuhake. Ka whakamahia e te hanga pahuka papa ngohengohe ngā polyol mekameka roa me te iti o te mahi i waenga i te 2 me te 3. Ka tīpakohia e ngā kaihanga ngā polyol motuhake me ngā taumaha ngota mai i te 2000 ki te 7000 hei whakaputa i ngā hanganga pūtau ngāwari mō ngā hua urunga tāonga me ngā hua moenga. Ka whakauruhia e ngā pahuka kaha-kaha ngā polymer tauhohe motuhake hei whakarei ake i te kaha kawe kawenga me te whakahokinga pūtau. Ko ngā hanganga ngohengohe me ngā hanganga tino ngawari me whai tāpiringa whakatuwhera pūtau hei whakataurite i te pēhanga hau ā-roto me te aukati i te whakahekenga pahuka i muri i te hanga. Ka whakamahia e ngā tono o roto motuka ngā pūnaha ngāwari ritenga hei hanga nohoanga motuka whakamarie, okiokinga ringa, okiokinga upoko, me ngā paparanga oro-ātete.

Ko ngā pahuka whakamahana pakari e hiahia ana kia teitei ake ngā taumata hononga whakawhiti hei whakatutuki i te pakari o te hanganga me te pumau o ngā āhuatanga i raro i ngā kawenga wera. Ka whakamahia e ngā kaihanga ngā polyol me ngā uara mahi i runga ake i te 3 me ngā tau hydroxyl teitei. Ko te matotoru hononga whakawhiti teitei ka hanga i ngā hanganga pūtau-kati e mau ana i ngā hau whakamahana i roto i te hanganga polymer pakari. Ka whakaratohia e ēnei hanganga pūtau piri te pumau hydrolytic mō te wā roa i roto i ngā āhuatanga taiao o waho. Ka whakapai ake ngā rahi pūtau pai ake i te kaha pēhi miihini me te pupuri i te kawe wera iti i roto i ngā panera whakamahana arumoni. Ko ngā waka kawe pouaka whakamātao, ngā taputapu arumoni, me te whakamahana rehu e whakawhirinaki ana ki ngā pūnaha polyurethane pakari hei aukati i te whakawhiti wera. Ka tāutahia e ngā kaupapa hanga ngā panera polyisocyanurate kua oti te hanga hei whakaiti i te whakapaunga pūngao o te whare. Ka whakaratohia hoki e ngā pahuka pakari kua hangaia ngā otinga takai ritenga mō ngā taputapu hiko pakarukaru.

Ngā tono PEG i roto i ngā kakahu, rapa, me ngā rongoā

He maha ngā whakamahinga o ngā pūmua polyethylene glycol hei āwhina tukatuka kore-ionic puta noa i ngā tono ahumahi rerekē. He rerekē ngā momo taumaha ngota e whakarato ana i ngā āhuatanga mahi motuhake i roto i ngā mahi hangahanga.

• Te Tukatuka Kakahu:Ko ngā momo wai pēnei i te PEG-200 ka mahi hei whakangawari me hei ārai i te pao. Ko ngā momo waenga pēnei i te PEG-400, 600, me te 800 ka mahi hei hinu whakahinuhinu me hei whakamakuku i te whakaotinga muka. Ko ngā kōwhiringa taumaha ngota teitei pēnei i te PEG-4000 ka mahi hei whakakoi kirihou me hei whakangawari i te piripiri.
• Te Hanga Rapa:Ka mahi ngā PEG-1000 me te 1500 hei whakamarara e whakatairanga ana i te whakamomona me te whakamarara waro pango. Ko ngā momo totoka pēnei i te PEG-4000 me te 8000 ka mahi hei kaihoko tuku pokepokea ai, hei hinu whakahinuhinu, hei whakamatao hoki.
• Ngā Hanganga Rongoā:Ka mahi ngā polyol wairewa-wai hei tāpiri me hei takawaenga hohe i roto i ngā hua hauora. Ka whakarei ake ēnei rauemi mata parakore i te wairewa hohe o te rongoā, te whai huatanga o te here, me te mahi tuku i roto i ngā whakamahinga rongoā ā-waha me te rongoā ā-papa.

Ko ngā tukanga mahi whakarewa ahumahi e whakawhirinaki ana ki ngā polyethylene glycols mō te whakamatao, te whakahinuhinu, me te whakawhiti wera. Ka whakamahia e ngā kaihanga pepa ngā otinga polyglycol hei whakahaere i te pupuri makuku me te whakapai ake i te maeneene o te mata. Ka whakaratohia e ēnei tāpiringa mahi te pumau matū puta noa i ngā kaukau tukatuka waikawa me te kawakore. Ka tīpakohia e ngā mahi ahumahi hou ngā taumaha polymer motuhake hei arotau i te tere tukatuka me te kounga hua.

Paearu Kōwhiringa mō ngā Polyol Motuhake a MOFAN

Te Whakataurite i ngā Uara Hydroxyl me te Mahi ki ngā Hiahia Taupānga

Ko te kōwhiringa polyol whai hua me taurite ngā tau hydroxyl me te mahi hei arotahi i ngā inenga ā-tinana. Mā te mahi ka whakatau te hanganga hononga whakawhiti o te whatunga kua rongoatia. Ka inehia e ngā uara hydroxyl ngā kukū pae hydroxyl hohe mō ia waeine papatipu. Ko ngā uara hydroxyl iti me te mahi i waenga i te 2 me te 3 ka puta he whatunga rapa. Ko ngā uara hydroxyl teitei ake me te mahi i waenga i te 4 me te 8 ka hanga he hanganga thermoset piri. Ka arotakehia e ngā kaihanga tauira ēnei inenga hei whakataurite i ngā āhuatanga miihini whakamutunga. Hei tauira, ko te polyol polyether me te uara hydroxyl o te 150 mg KOH/g me te taumaha ngota ngota toharite o te 1200 g/mol e whakaatu ana i te mahi tata ki te 3.2. Ka whakamahia e ngā kaihanga tauira tēnei taumata motuhake hei hanga panera pahuka haurua-pakari mō ngā panera o roto o ngā motuka.

Te Arotau i te Mātotoru, te Tauhohenga, me te Whakaora i te Kino

Ko te angitu o te tukatuka e whakawhirinaki ana ki te whanonga rere tika me te tere o te whakaora. Mā te whiriwhiri i ngā polyol wai me ngā taumaha ngota e tika ana ka whakahaere i te matotoru turanga. Ka tāpirihia e ngā kaiwhakatakoto matū te konupūmā kāponāte kua whakapūmautia i te uta 20-40 wt.% hei hanga ātete totohu. Hei tāpiri, mā te tāpiri i te silica kua kohuhia i te uta 2-5 wt.% ka puta he whanonga thixotropic kaha hei ārai i te totohu i runga i ngā papa poutū. Mā te hanga i ngā prepolymer me te ōwehenga isocyanate ki te hydroxyl i waenga i te 1.8:1 me te 2.5:1 ka āwhina i te whakau i te matotoru o te pūnaha. Mā te whiriwhiri polyol ātaahua ka māmā ake te whakahaere hihiri puta noa i ngā taputapu tohatoha aunoa.

Ko ngā whakakorikori organotin pēnei i te DBTDL i te 0.01-0.1 wt.% te utaina ka whakatū i ngā tere tauhohenga matapae. Ka whakatairangahia e ēnei tāpiringa te hanganga urethane hei pupuri i te mata kore-pā i roto i te 30 ki te 90 meneti. Ko ngā whakakorikori amine tuatoru pēnei i te tere ake o te whakamaroke i roto i ngā pūnaha polyurethane. Mā te whakataurite i ngā whakakorikori hohe ki ngā polyol mahi ka ārai i te hanganga āputa i roto i ngā wāhanga kua whakakikoruatia kiato.

Te Whakapai Ake i te Pūmautanga o te Wera me te Ātete ki te Taiao

Ko te kōwhiringa tuara te mea e whakahaere ana i te pumau o te wai me te ātete matū mō te wā roa. Ka mau tonu te pumau pai o ngā polyol polyether i te wai, ka roa ake i te 2000 hāora i te 95% te haumākū whanaunga me te 70°C me te kore e ngaro nui te āhuatanga. I tetahi atu taha, ka tere ake te pirau o ngā polyol polyester i raro i te haumākū teitei nā te mea ka whakaekea e te makuku ngā hononga ester. Mā te whiriwhiri i ngā polyol rerekē hei utu mō ngā polyol polyester ka pai ake te ātete wai i roto i ngā elastomers polyurethane. Ka whakaratohia e ngā polyol motuhake te ātete matū pai rawa atu i roto i ngā taiao ahumahi uaua. Ka mau tonu ngā polyol polybutadiene motuhake i te papatipu neke atu i te 98.5% i te wā e whakaatuhia tonutia ana i te 100°C mō te 1000 hāora, ka pupuri i te rerekētanga modulus elastic i raro i te 100%.

Ka whakaratohia e ngā tuara kakara he pakari wera hei ātete i ngā kawenga wera nui mai i ngā momo isocyanate kāore i tauhohe. Ka āraihia e ngā kōwhiringa aliphatic te tae kino o te UV. Ka tāpirihia e ngā kaihanga matū he antioxidants i te 0.5–1.5 wt% hei whakapai ake i te ātete waikura mō te wā roa. Ka tiakina ngā rauemi o waho mai i te kino o te hihi o te rā mā te tāpiri i ngā whakaū UV i te 0.5–2.0 wt%. Mā te kōwhiringa polyol tika ka tiakina e ngā polyol motuhake kua whakaritea ngā āhuatanga polyurethane nui puta noa i ngā tono o waho.

Ngā polyol motuhake a MOFANme te raupapa polyethylene glycol pai rawa atu e tuku ana i te uara taketake puta noa i te hangarau polymer hou. Mā ngā hoahoa ngota ngota tika ka taea e ngā polyol te arotau i te tere o te tauhohenga me te kaha o te whatunga tinana. Ka whakarei ake ngā āhuatanga rauemi kua whakaritea i te mahi hua i roto i ngā piripiri polyurethane, ngā hiri hanganga, ngā elastomers hihiri, me ngā pahuka whakamahana pakari. Ka whakatūhia e ngā kaihanga matū te ātete matū pai rawa atu, te pumau wera, me te pakari miihini mā te matū mahi whakahaere. Ka tutuki i ngā mahi tukatuka ahumahi te pai ake o te hanga me ēnei otinga matū parakore teitei puta noa i ngā momo raina tukatuka. Ka tonohia ngā kiritaki ahumahi ki te kōrero ki ngā tohunga hangarau MOFAN ki te whakawhanake i ngā hanganga ritenga, ki te aro ki ngā whāinga tukatuka pakari, me te whiwhi tautoko motuhake mō ngā whakaritenga hanga uaua.

Ngā Pātai Auau