Kirihou Polyethylene (PE)

* Ko te PE he kirihou polyethylene, ka taea te hanga hei kiriata kirihou, hei putea kirihou me ngā wāhanga rerekē. Hei whakaiti i te parahanga mā, ka taea te tāpiri i ngā matū pirau ki te kirihou kia tere ai te pirau, ka kiia tēnei momo polyethylene he kirihou hoa taiao. He mama, he pakari, ā, ko tētahi o ngā kirihou tino hangaia.

* Ngā hua kirihou PE kua whakaritea, ngā wāhanga rānei

KAHA

Ātete Pānga

NGĀ ĀHUATANGA HIKO NUI

He aha te kirihou PE?

Ko te polyethylene, e kiia nei ko te PE, he kapia kirihou wera i hangaia e te polymerization o te ethylene, ko te hanganga o ngā pūhui waro polymer tino māmā, ko te rauemi polymer polyethylene PE tino whānuitia o te ao, ko te polymerization o te ethylene, e ai ki ngā mātotoru rerekē ka wehea ki te polyethylene kiato-teitei, te polyethylene kiato-waenga me te polyethylene kiato-iti.

Kāore he kakara o te polyethylene, kāore he paitini, he rite te āhua ki te ware pi, he tino pai te ātete ki ngā pāmahana iti (te pāmahana whakamahi iti rawa tae atu ki te -100 ~ -70 °C), he pai te pumau matū, ka taea te tu atu ki te nuinga o ngā waikawa me ngā kawakore (kāore e ātete ki ngā āhuatanga waikura o te waikawa). Kāore e rewa i roto i ngā whakarewa whānui i te pāmahana rūma, he iti te mimiti wai, he pai te whakamarumaru hiko.

Me pēhea te hanga o te PE?

Ka hangaia te polyethylene mai i te whakapūhuitanga o te monomer ethylene (ethene rānei). Ka hangaia ngā mekameka PE mā te tāpiri, mā te whakapūhuitanga rānei. Ko ngā tikanga hanga pea ko:

Te Whakapūhuitanga Ziegler-Natta me te

Whakaoho Metallocene

He paitini ngā kapia PE?

I te āhua totoka, e kiia ana he haumaru te Polyethylene, ā, kāore he paitini. Tērā pea ka paitini mēnā ka hongia, ka mimitia rānei hei kohu, hei wai rānei (arā, i te wā o ngā mahi hanga).

He aha ngā momo PE e kitea whānuitia ana?

I runga i tōna kiato me te peka, ka rerekē te mahi a ngā momo PE rerekē tetahi i tetahi.

Nō reira, ka whakarōpūtia ngā māka PE penei.

Ngā Putanga Peka

Polyethylene iti-kiato (LDPE)

Polyethylene iti-kiato rārangi (LLDPE)

Ngā Putanga Raina

Polyethylene kiato-teitei (HDPE)

Polyethylene taumaha-tino-teitei (UHMWPE)

Polyethylene honohono-whiti (PEX, XLPE rānei)

Hei tāpiritanga, kei te wātea hoki ētahi atu momo PE pēnei i:

Polyethylene matotoru-waenga (MDPE)

Polyethylene tino iti te matotoru (ULDPE)

Polyethylene taumaha-teitei (HMWPE)

Polyethylene whakarewa (mPE)

Polyethylene kua whakakōkōhia ki te hauota (CPE)

Tīmatahia me te tuku korero tere kore utu!

He haumaru, he muna hoki ngā tukuake katoa

KAIRANGI HUA NGĀ ARATOHU HANGARAU

Me pēhea te whakataurite i waenga i ngā momo PE matua?

	LDPE	LLDPE	HDPE
Ingoa Katoa o te Polymer	Polyethylene Matotoru Iti	Polyethylene Matotoru Iti Rārangi	Polyethylene Kiato Teitei
Hanganga	Teitei o te mekameka poto te peka + te mekameka roa te peka	Teitei o te peka o te mekameka poto	Raina (te iti rānei o te peka o te mekameka poto)
Kaiwhakaoho me te tukanga	Te whakamahi i te polymerization radical mā te whakamahi i te tikanga ngongo, te tikanga autoclave rānei	Te whakamahi i te whakakorikori Ziegler-Natta, te whakakorikori metallocene rānei	Te whakakōkī Ziegler-Natta i roto i: - Te whakakotahitanga kotahi-wāhanga - Te whakapūhui maha-wāhanga, te whakakōkī Cr, te momo Phillips rānei
Kiato	0.910-0.925 karamu/cm3	0.91-0.94 karamu/cm3	0.941-0.965 karamu/cm3
Te āhua o te tioata	He iti te tioata, he teitei hoki āhua kore (iti iho i te 50-60% tioata)	He āhua-kiriata, he taumata i waenga i te 35 ki te 60%	He tioata teitei, he tioata iti te āhua koretake (>90% tioata)
Waehere Whakamahi Anō
Ngā Āhuatanga	Ngāwari, mārama hoki Ngā āhuatanga ārai makuku pai Te kaha pānga teitei i te pāmahana iti He ātete pai ki ngā waikawa, ngā kawa me ngā hinu huawhenua	Ki te whakatauritea ki te LDPE, kei a ia: kaha kume teitei ake teitei ake te ātete ki te pānga me te wero	He ātete matū tino pai Te kaha kume teitei Ngā āhuatanga ārai makuku tino pai He uaua ki te āhua ngāwari
Ngā Tono Whānui	Te takai whakaitiiti, ngā kiriata, ngā pounamu pēhi, ngā putea para, ngā whakakikoruatanga whakaputa, me ngā whakanikoniko	Ngā putea mahi teitei, ngā kiriata whakaruruhau, ngā kiriata wehewehe potae, ngā raina ahumahi, ngā kiriata rapa, ngā putea hukapapa, ngā putea hei tāpiri ngā putea tākai me ngā putea para	He whāiti te tohatoha taumaha ngota, ā, he maha ngā whakamahinga i roto i ngā whakakoi werohanga, i ngā miro papatahi rānei, me te momo whakamutunga He whānui te tohatoha taumaha ngota, e whakamahia ana hei hanga hua kiriata, ngā hua kirihou me ngā paipa tuwhera

He aha ngā āhuatanga o te HDPE?

1. He paura ma mura noa te polyethylene, he kirihou wera, kāore he kakara, kāore he reka, kāore he paitini.

2. Ko te ira rewa o te polyethylene he 100-130C - he tino pai tōna ātete ki te pāmahana iti.

3. He pai te pumau matū o te polyethylene, ā, he ātete ki te waikawa hauota waimeha, te waikawa whanariki waimeha, te waikawa hauwaihauora, te waikawa hauwaihauora, te waikawa phosphoric, te waikawa formic, te waikawa acetic, te haukini, ngā amine, te hauwai waikura, te hauwai konutai, te hauwai pāhare pākawa me ētahi atu otinga i te pāmahana rūma.

4. He ngāwari te polyethylene ki te whakaahua-waikura, te wera-waikura, te pirau ozone, ā, he ngāwari hoki te pirau i raro i te mahi a ngā hihi ultraviolet.

5. Te pāmahana tonu: -50 ° C ki te +60 ° C, he rauemi pakeke me ngā āheinga pāmahana whai hua

6. He iti te utu o te pūmua, he pai te tukatuka

7. He tino iti te mimiti wai

He aha te momo PE ka taea te hangarua?

Ko ngā waehere tautuhi kapia mō ngā momo matua e rua o te PE ko:

Kāore e pirau te LDPE me te HDPE. He nui te wāhi o rāua ki ngā para kirihou o te ao. Ka taea te hangarua i ngā momo PE e rua. Ka whakamahia rāua hei hanga pounamu mō ngā taonga ehara i te kai, ngā kirihou mō ngā mahi o waho, ngā ipu wairākau, me ētahi atu.

Ngā Ratonga e Wātea ana mō te Kirihou PE

Ngā hua kua oti

He hua kotahi i hangaia ki te rauemi PE, pērā i ētahi taputapu whakapaipai, ngā ipu para, me ētahi atu.

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