Te Tātari me te Arotau i te Hanganga Ārai-Mumura mō ngā Paninga PVC

Te Tātari me te Arotau i te Hanganga Ārai-Mumura mō ngā Paninga PVC

He kaihanga tēneti PVC te kiritaki, ā, me pania he paninga ārai-mumura. Ko te tauira o nāianei he 60 wāhanga kapia PVC, 40 wāhanga TOTM, 30 wāhanga konumohe hypophosphite (me te ihirangi 40% phosphorus), 10 wāhanga MCA, 8 wāhanga konutea borate, me ngā mea whakamarara. Heoi, he ngoikore te mahi ārai-mumura, ā, he rawaka hoki te whakamararatanga o ngā mea ārai-mumura. Kei raro nei he tātaritanga o ngā take me te whakatikatika kua whakaarohia ki te tauira.

I. Ngā Take Matua mō te Ārai Mura Kore

1. Pūnaha Ārai Mura Tauritekore me ngā Pānga Whakakotahitanga Ngoikore

• Te nui rawa o te konumohe hypophosphate (30 ngā wāhanga):
  Ahakoa he ārai mura whai hua te konumohe hypophosphite kei roto te phosphorus (40% te nui o te phosphorus), ka taea e te tāpiri nui rawa (>25 ngā wāhanga) te arahi ki:
• He pikinga tere o te matotoru o te pūnaha, e uaua ai te horapa, e hanga ana hoki i ngā wāhi wera kua whakaemihia hei whakatere i te mura ("pānga miro").
• Kua heke te pakari o te rauemi, ā, kua ngoikore ngā āhuatanga hanga kiriata nā te nui rawa o te whakakī kore-waro.
• Teitei o te ihirangi MCA (10 ngā wāhanga):
  Ko te MCA (e ahu mai ana i te hauota) te tikanga e whakamahia ana hei whakakotahitanga. Ina neke atu te horopeta i te 5 wāhanga, ka heke ki te mata, ka whakakī i te whai huatanga o te aukati mura, ā, ka pāngia pea e ētahi atu aukati mura.
• Te korenga o ngā kaiāwhina matua:
  Ahakoa he pānga pehi paowa tō te konutea borate, ko te korenga o ngā matū e hangai ana ki te antimony (hei tauira, te antimony trioxide) me te waikura konganuku (hei tauira, te hauwai konumohe) ka ārai i te hanganga o tētahi pūnaha mahi tahi "phosphorus-haitogenic-antimony", ka hua ake he koretake te ātete mura o te hau-hau.

2. Te kore ōrite i waenga i te kōwhiringa kirihou me ngā whāinga ātete mura

• He iti noa te ātete mura o te TOTM (trioctyl trimellitate):
  He tino pai te ātete a TOTM ki te wera engari he iti ake te whai huatanga o te ātete mura ki te whakataurite ki ngā phosphate esters (hei tauira, TOTP). Mō ngā tono ātete mura nui pērā i ngā paninga tēneti, kāore e taea e TOTM te whakarato i ngā kaha mura me te ārai hāora e ranea ana.
• Kāore i te rawaka te katoa o te whakapūkara kirihou (40 noa iho ngā wāhanga):
  Ko te tikanga, e 60–75 ngā wāhanga o te plasticizer e hiahiatia ana mō te plasticization katoa. Ko te iti o te plasticizer ka hua ake he matotoru rewa nui, ka nui ake te kaha o ngā raruraru marara o te aukati mura.

3. Pūnaha Marara Kore-Whai Hua e Ārahi Ana ki te Tohatoha Ārai Mura Kore-Taurite

• Tērā pea he momo whānui te momo whakamarara o te au (hei tauira, te waikawa stearic, te ware pi PE rānei), kāore e whai hua mō ngā mea whakaroa mura inorganic taumaha-rahi (te konumohe hypophosphite + te konutea borate e 48 ngā wāhanga katoa), ka puta:
• Te kohikohinga o ngā matūriki ātete mura, ka hangaia he ngoikore ā-rohe i roto i te paninga.
• Kāore i te pai te rere o te rewa i te wā e tukatuka ana, ka puta he wera kutikuti ka tīmata ai te pirau wawe.

4. Te Hototahitanga Kino i waenga i ngā Ārai Mura me te PVC

• He rerekētanga nui te kaha o ngā rauemi kore-waro pērā i te konumohe hypophosphite me te konutea borate ki te PVC. Ki te kore he whakarerekētanga mata (hei tauira, ngā kaihoko hononga silane), ka puta te wehenga ā-wāhanga, ka whakaiti i te whai huatanga o te aukati mura.

II. Huarahi Hoahoa Matua

1. Whakakapia te Kaihanga Kirihou Matua ki te TOTP

• Whakamahia tōna ātete mura ā-roto (he nui te whākawa ≈9%) me tōna pānga kirihou.

2. Arotauhia ngā ōwehenga ātete mura me te mahi tahi

• Kia mau tonu te konumohe hypophosphate hei pūtake matua o te phosphorus, engari kia tino whakaitihia tōna horopeta hei whakapai ake i te horapa me te whakaiti i te "pānga wick".
• Kia mau tonu te konutea borate hei hononga matua (e whakatairanga ana i te tahunga me te pehi i te paoa).
• Puritia te MCA hei kaiāwhina hauota engari whakaitihia tōna horopeta hei ārai i te hekenga.
• Whakauruhiahauwai konumohe tino pai rawa (ATH)hei wāhanga maha-mahi:
• Ātete mura:Te pirau paura (maroke), te whakamatao, me te waimeha o ngā hau mura.
• Te pehi paowa:Ka tino whakaiti i te whakaputanga paowa.
• Whakakī:Ka whakaiti i ngā utu (ki te whakarite ki ētahi atu ārai mura).
• Te marara me te rere pai ake (te taumata tino pai):He māmā ake te marara atu i te ATH tikanga, e whakaiti ana i te pikinga o te matotoru.

3. Ngā Otinga Kaha mō ngā Take Marara

• Te whakanui ake i te ihirangi plasticizer:Me whakarite kia tino whakakirikiritia te PVC me te whakaiti i te matotoru o te pūnaha.
• Whakamahia ngā matū whakamarara tino whai hua:I hangaia mō ngā paura kore-waro he nui te kawenga, he ngāwari te whakaemi (te konumohe hypophosphite, ATH).
• Whakapai ake i te tukatuka (he mea nui te whakaranu i mua):Me whakarite kia mākū me te horapa pai ngā mea ārai mura.

4. Whakapūmau i te Pūmautanga Tukatuka Taketake

• Tāpirihia ngā whakaū wera e rawaka ana me ngā hinu whakahinuhinu e tika ana.

III. Te Tātai PVC Ārai-Mumura kua Whakahoutia

IV. Ngā Tuhipoka Tātai me ngā Kaupapa Matua

1. Ko TOTP te Tūāpapa Matua

• 65–75 ngā wāhangae whakapūmau ana:
• Te whakakirikiritanga katoa: Me nui te whakakirikiritanga e hiahiatia ana e te PVC hei hanga i te kiriata ngohengohe, tonu.
• Te whakaiti i te matotoru: He mea nui mō te whakapai ake i te marara o ngā aukati mura kore-waro kawenga teitei.
• Ārai mura ā-roto: He tino whai hua te TOTP ki te ārai i te mura o te kirihou.

2. Te Mahi Tahi Ārai Mura

• Te mahi tahi a te PNB-Al:Mā te konumohe hypophosphite (P) + MCA (N) ka puta he hononga PN turanga. Mā te konutea borate (B, Zn) ka whakanui ake i te mura me te pehi paowa. Mā te ATH tino pai (Al) ka puta he whakamatao endothermic nui me te pehi paowa. Ka whai wāhi atu hoki te TOTP ki te phosphorus. Mā tēnei ka hangaia he pūnaha hononga maha-huānga.
• Te tūranga o ATH:Ko te 25–35 ngā wāhanga o te ATH tino pai he mea nui ki te ātete mura me te pehi paowa. Ka mimiti te wera i tōna pirau werawera, ko te mamaoa wai e tukuna ana ka whakararu i te hāora me ngā hau mura.He mea nui te ATH tino pai rawa atu, ā, he mea tukatuka ki te matahei whakaiti i te pānga ki te matotoru me te whakapai ake i te hototahitanga ki te PVC.
• Te hypophosphate konumohe kua whakaitihia:I whakaitihia mai i te 30 ki te 15–20 ngā wāhanga hei whakamama i te taumaha o te pūnaha me te pupuri tonu i te takoha o te whākōkī.
• MCA kua whakaitihia:Kua whakaitihia mai i te 10 ki te 4–6 ngā wāhanga hei ārai i te hekenga.

3. Otinga Marara – He mea nui mō te Angitu

• Kaiwhakamarara-tino (3–4 ngā wāhanga):He mea nui mō te whakahaere i te pūnaha taumaha-rahi (50–70 ngā wāhanga katoa o ngā whakakī kore-waro!), uaua-ki-te-marara (konumohe hypophosphite + ATH tino pai + konutea borate).Kāore e ranea ngā mea whakamarara noa (hei tauira, te konupūmā stearate, te ware pi)!Hokohoko ki ngā matū whakamarara tino whai hua, ā, whakamahia ngā rahinga e tika ana.
• Te ihirangi o te kirihou (65–75 ngā wāhanga):E ai ki runga ake nei, ka whakaitihia te matotoru whānui, ka hangaia he taiao pai ake mō te marara.
• Ngā hinu whakahinuhinu (1–2 wāhanga):Mā te huinga o ngā hinu whakahinuhinu o roto, o waho hoki ka pai te rere o te hinu i te wā e whakaranua ana, e pania ana hoki, ā, ka ārai i te piri.

4. Tukatuka – Tikanga Whakaranu-Mua Tino Pai

• Hipanga 1 (Paura kore-waro ranunga-maroke):
• Tāpirihia te konumohe hypophosphite, te ATH tino pai, te konutea borate, te MCA, me te super-dispersant katoa ki te mīhini whakaranu tere-teitei.
• Whakaranua ki te 80–90°C mō ngā meneti 8–10. Whāinga: Kia tino kapi katoa ia matūriki i te super-dispersant, kia pakaru ai ngā mea e kohikohi ana.He mea nui te wā me te pāmahana!
• Hipanga 2 (Te hanga paru):
• Tāpirihia te nuinga o te TOTP (hei tauira, 70–80%), ngā mea whakau wera katoa, me ngā hinu whakahinuhinu o roto ki te ranunga mai i te Hipanga 1.
• Whakaranua ki te 90–100°C mō te 5–7 meneti kia puta he paraoa ōrite, he rere ngāwari, ā, he ātete ki te mura. Me whakarite kia mākū katoa ngā paura i ngā mea whakakirihou.
• Hipanga 3 (Tāpirihia te PVC me ngā wāhanga e toe ana):
• Tāpirihia te kapia PVC, te toenga o te TOTP, ngā hinu whakahinuhinu o waho (me ngā ārai mate/whakaū UV, mēnā ka tāpirihia i tēnei wā).
• Whakaranua ki te 100–110°C mō te 7–10 meneti kia tae rā anō ki te "wāhi maroke" (rere noa, kāore he puranga).Kaua e whakaranu rawa kia kore ai e pirau te PVC.
• Whakamatao:Ringihia te wai ki waho, ka whakamatao ki raro i te 50°C hei ārai i te pupū.

5. Te Tukatuka i Muri Mai

• Whakamahia te ranunga maroke kua whakamatao mō te tātatari, te paninga rānei.
• Kia tino whakahaeretia te pāmahana tukatuka (te pāmahana rewa e taunakitia ana ≤170–175°C) hei karo i te pakaru o te whakapūmau, te pirau wawe rānei o ngā mea aukati mura (hei tauira, ATH).

V. Ngā Hua e Tūmanakohia ana me ngā Whakatūpato

• Ātete mura:Ki te whakatauritea ki te tauira taketake (TOTM + hypophosphite konumohe teitei/MCA), ko tēnei tauira kua whakahoutia (TOTP + ōwehenga P/N/B/Al kua arotauhia) me whakapai ake i te ātete mura, inā koa i roto i te mahi tahu poutū me te pehi paowa. Ngā paerewa whainga pēnei i te CPAI-84 mō ngā tēneti. Ngā whakamātautau matua: ASTM D6413 (tahu poutū).
• Te mararatanga:Mā te matū whakamarara nui + te matū whakapūmau teitei + te whakaranu-mua kua arotauhia ka tino pai ake te whakamarara, ka whakaiti i te kohikohinga me te whakapai ake i te ōritetanga o te paninga.
• Te Āheinga o te Tukatuka:Mā te TOTP me ngā hinu whakahinuhinu e rawaka ai te tukatuka, engari me aroturuki anō hoki te matotoru me te piri i te wā e hangaia ana.
• Utu:He nui te utu mō te TOTP me ngā super-dispersants, engari mā te whakamahi i te konumohe hypophosphite me te MCA kua whakaitihia te utu ka ea ētahi o ngā utu. He iti te utu mō te ATH.

Ngā Whakamaumaharatanga Tino Hira:

• Ngā whakamātautau iti i te tuatahi!Whakamātauria i roto i te taiwhanga, ka whakarerekētia i runga i ngā rauemi tuturu (ina koa ko te ATH me te mahi super-dispersant) me ngā taputapu.
• Kōwhiringa rauemi:
• ĀWHINA:Me whakamahi i ngā momo tino pai rawa (D50 ≤2µm), kua maimoatia ki te mata (hei tauira, silane). Pātai atu ki ngā kaiwhakarato mō ngā taunakitanga hototahi ki te PVC.
• Ngā mea whakamarara nui:Me whakamahi i ngā momo tino whai hua. Whakamōhio atu ki ngā kaiwhakarato mō te whakamahinga (PVC, ngā whakakī kore-waro kawenga-teitei, te ātete mura kore-halogen).
• TOTP:Kia tino kounga te kounga.
• Te whakamātautau:Whakahaerehia ngā whakamātautau ātete mura kia rite ki ngā paerewa whainga. Arotakehia hoki te ātete tawhito/wai (he mea nui mō ngā tēneti o waho!). He mea nui ngā mea whakaū UV me ngā antioxidants.

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