Te hangarua o te pelletizing PE, me aha ahau hei whakaoti i te rewa kore pumau?

1. Taupū Rewa

He maha ngā wā ka whakaatuhia te taupū rewa ki ngā kupu MI, ā, e mōhiotia whānuitia ana i te ao whānui ko te tere rere rewa, e whakaatuhia ana ko MFR.

He mea whakamahi noa hei tawhā mō te whakahaere kounga o ngā kapia kirihou wera me ngā āhuatanga tukanga hanga kirihou wera. Ko te uara taumaha o te rewa e rere ana i roto i te kapia paerewa i te pāmahana kua tohua me te kawenga pumau, e whakaatuhia ana i roto i te g/10 meneti. Ko te taupū rewa he tawhā e whakamahia ana hei wehewehe i te rere o ngā rauemi kirihou wera i roto i tō rātou āhua rewa.

Mō te kapia kotahi, ka taea te whakamahi i te taupū rewa hei whakatairite i tōna taumaha ngota hei mana whakahaere kounga whakaputa.

I te nuinga o te wā, mō ngā kapia he hanganga matū motuhake, a. ka iti ake te taupū rewa, ka nui ake te taumaha ngota, ka piki ake te kaha pakaru, te pakeke, te pakari, te pumau tawhito me ētahi atu āhuatanga; b. ahakoa he nui te taupū rewa, he iti te taumaha ngota, ā, he pai ake te kaha rere i te wā e hangaia ana.

He kirihou hangaruaNā te nui ake o ngā poke, te āhua kore pumau, ka hua ake te kukū o te ahotea, ka nui ake ngā hapa o te rauemi i muri i te whakakoi, ka pā ki te kounga o te hua, me pēhea te whakahaere i te putanga maihao rewa o ngā hua pai?

2. He rerekē te rewa, me wehewehe

1) Kei te wātea ngā momo kapia HDPE i roto i te hanga werohanga, te hanga pupuhi, te hanga hurihuri me te kiriata, ā, he rerekē ngā taupū rewa.
a. He iti ake te maihao rewa o te HDPE pupuhi me te kiriata, i raro iho i te 2;
b. Ka nui ake te maihao rewa mō te pokepokea ai werohanga i te 2, ā, ka eke pea ki ngā tekau.
Ko tēnei me rerekē te hangarua, me te whakamahi i ngā whakaritenga rerekē mō ia rauemi kua tukatukahia.

3. Ngā rauemi maihao rewa iti kua whakaranua

Tuatahi, ka taea te werohanga tika i ngā mea i pokepokea ai, engari kāore e taea te whakamahi i ngā mea i werohanga mō te pokepokea ai.
Ko te huarahi anake hei huri i te HDPE taupū rewa teitei ki te HDPE taupū rewa iti ko te kimi huarahi hei whakanui ake i te taumaha ngota, he mea uaua ake te mahi mā te whakanui noa i te taumaha ngota, e uru ana te matū pūmua, ā, he tino uaua ki te whakahaere.
Ko te otinga māmā anake ko te whakamahi i te rauemi HDPE he iti iho te taupū rewa i te mea e hiahiatia ana, ka whakaranua ki tētahi ōwehenga ki te taupū rewa teitei o nāianei, ko te taupū rewa kitea ko te uara waenga o ngā rauemi mata e rua.

4. Ngā here pūmua

He tāpiri kei reira e kiia nei ko te whakangawari matimati rewa, e mōhiotia ana hoki ko te here polymeric.
He momo whakarerekētanga tukatuka mō ngā hua polyolefin i whakawhanakehia mō te tikanga o te hanganga ngota noa o ngā hua polyolefin. Ka whakakotahi pai i ngā polymer polyolefin mā roto i ngā tikanga here, ā, ka whakanui ake i te kukume i waenga i ngā wāhanga mekameka polymer (arā, ngā kaha van der Waals).

Mā tēnei tukanga whakarerekētanga ka whakahokia ngā āhuatanga o ngā hua polyolefin kua pakaru ā-wāhanga ki ō rātou āhuatanga i mua i te pakaru, me ngā whakapainga nui ki ngā āhuatanga takitahi i runga i te nui o te mea i tāpirihia.

Ko tāna mahi he whakarerekē i te pānga o te whakapiripiri me te whakakore i ngā ngoikoretanga o ngā āhuatanga ā-pūkaha me te ngoikore o te rere o te hototahi tuku iho. Ko te POE he elastomer thermoplastic peka poto me te tohatoha papatipu ngota rite i hangaia e te Kamupene Matū DOW i te USA mā te whakamahi i ngā metallocenes hei whakakorikori, ā, he tino pai ōna āhuatanga matua, pērā i te kaha kume, te kaha haehae me ētahi atu āhuatanga ā-pūkaha matua kua pai ake i ngā rauemi rapa tuku iho.