Polyethylene - he aha te mea tenei? Ko te whakamahi o te polyethylene

He aha te mea PE? He aha e ona āhuatanga? Kia pehea te ko te hanga o te polyethylene? Ko te pātai rawa ngā e Me whakaaro i roto i tenei tuhinga tenei.

mōhiohio whānui

Polyethylene - he taonga matū i te mea he mekameka o ngā ngota waro, ia o nei hono te ki e rua ngā rāpoi ngota o te hauwai. Ahakoa te aroaro o te hanganga taua, ano i reira he putanga rua. rerekē ratou i roto i to ratou hanganga me, no reira, ngā āhuatanga. Ko te tuatahi ko te mekameka rārangi i roto i nei nui te tohu o polymerization te taupū o e rima mano. Ko te hanganga tuarua - he Pekanga o 4-6 ngota waro e kua piri ki te mekameka matua e te tikanga noho. Ka rite ki te whakahuahua whiwhi i te polyethylene rārangi? tutuki tēnei i roto i te whakamahi o kaiwhakakökï motuhake, e pā te polyolefins i pāmahana āhua (ki runga, ki te 150 degrees) me te pēhanga (ki runga, ki te 20 atmospheres). Ko te aha te mea te reira? E matau ana tatou ona āhuatanga matū, me e he ka tinana?

He aha te mea te reira?

Polyethylene - he waerau rewarau, i roto i nei whakamana tukanga whātioatanga te i te pāmahana o iti iho i te haunga te 60 degrees. Ehara i te mea mārama i roto i te paparanga mātotoru kore e nana e wai, e kore te whakarewa organic i te pāmahana rūma pāngia. Ki te nui ake te pāmahana 80 degrees, kawea te puku i roto i te tuatahi, a ka pirau ki waiwaro kakara me pärönaki kōnakonako. Polyethylene - he taonga e whakakeke ana rongoā mana kino o waikawa, tai me kawakore. Otiia ki te nui te pāmahana 60 degrees, taea rawa hohoro whatiia reira iho hauota me te waikawa pungatara. Hoki ngā hua hononga polyethylene kia tukatuka ai ratou hāora, aru i te tono o te matū e tika ana.

Kia pehea te ko te hanga o te polyethylene?

Hoki tenei whakaaro:

• Tikanga o tiketike-pēhanga (kiato iti). hanga polyethylene te i te pēhanga tiketike, i te mea i roto i te whānui i te 1 000 ki te 3, 000 atmospheres i te pāmahana o te 180 degrees. Ka rite ki mahi hāora hei initiator.
• Tikanga pēhanga iti (kiato teitei). I roto i tenei take, i hanga polyethylene te i te pēhanga i te mea i te iti rawa e rima atmospheres me te pāmahana o 80 degrees te whakamahi i te whakarewa organic me kaiwhakakökï Ziegler-Natta.
• A wehe he rārangi huringa polyethylene production, tuku ki runga ake. Ko reira takawaenga i waenganui i ngā tuatahi, me te tuarua.

Me kï reira e kore te mea anake nga hangarau e kua whakamahia tenei. Na, tino noa me te ake ko te whakamahi o kaiwhakakökï metallocene. Ko te tikanga o tenei hangarau ko e i roto i reira te whakatutuki nui taimaha o te waerau, ko te kupu te whakanui ake i te kaha o te hua. Tei runga i te ahua o te hanganga, me te he e tika ana ngā āhuatanga ka whakamahi i te waetahi, a kua whakamahia ki te tīpako i te tikanga o te fariiraa. Hoki, kia whakaawe reira nga whakaritenga rara pāmahana, mauroa, pakeke me te mātotoru.

He aha te mea i reira te mea he rerekētanga kaha?

Ko te take matua mō te rerekētanga o ngā āhuatanga - branched reira macromolecules. Ko te kupu, ko te nui ko reira, te raro me teitei crystallinity polymer elasticity. He aha te mea nui tenei? Ko te meka e tipu i te āhuatanga pūkaha o polyethylene me tona kiato, me te taimaha rāpoi. Kia titiro a i te tauira tere. Ko te whārangi polyethylene he nui rigidity me te mārama. Otiia, ki te kei te whakamahi koe i te tikanga iti-kiato, ka whai te rauemi hua ngäwari āhua pai, me te aritanga whanaunga i roto i te reira. Aha he whakaputaina reira he taua whānuitanga momo? Nā ki te rerekētanga i roto i ngā āhuatanga whakahaere. Hei tauira, pakari polyethylene ki te kawenga ru. Ia Māna hoki te haupapa. Ko te whānuitanga pāmahana whakahaere o tenei rauemi - i -70 ki +60 degrees. Ahakoa e urutau pane takitahi mō te rōnaki ahua rerekē - ka i -120 ki +100. awe tenei e te kiato o te polyethylene me tona hanganga i te taumata rāpoi.

Ko te pū o te rauemi

Me kï hoki kotahi drawback - te hoholo tere o te polyethylene. Ko te ngāwari tenei faatitiaifarohia. tutuki ora ratonga nui ake te i tāpiritanga motuhake, antioxidants, i roto i te tūranga e taea mahi waro pango, phenols amines ranei. Me mahara hoki käore te reira, Heoi, e ake Kaore te rauemi iti-kiato, hanga māmā kia tukatuka ki reira ki hua. E kore e ki te whakahua i, me ngā āhuatanga hiko. Polyethylene no te mea he waerau kore-neke ko te uruhanga nui-auau kounga teitei. No te mea o tenei pātapa tamau, me te mate i te paku huri huringa haumākū, te pāmahana (i roto i te whānuitanga -80 ki te +100) me te auautanga o te mara hiko. Here kia tatou mōhio kotahi āhuatanga. Ko te kupu, ki te i roto i te polyethylene he toenga whakakōkī, e haamaitai te reira i te pātapa mate uruhanga, e arata'i ki te tetahi ino o te tuuraa i ngā āhuatanga. Well, Kei te inaianei i arotakehia matou te āhuatanga whānui. Na kia utu a pau whakarongo.

He aha te kiato nui polyethylene?

Tenei marama rauemi crystallizable rapa nei wera resistance ko i te whānui i -80 ki te +100 degrees. He he mata pīataata. tīmata Vitrification i -20. He rewa - i roto i te awhe 120-135. He pānga kaha me te ātete wera te pai āhuatanga. kiato polyethylene tino pā te āhuatanga hua. Ko te kupu, me tupu te reira kaha, pakeke, pakeke me te ātete matū. Otiia i te wa ano heke te hehema ki totoro me te uruhanga ki haurehu me kohu. Me kï reira ngokingoki e puta i roto i te kawenga auroa. Ko biologically e mangere, taua polyethylene, a taea te ngāwari hangarua reira. I te mea te tino whai hua i roto i te ao hou. A paraparau e pā ana ki te whakamahi o te polyethylene, kia tuhia te reira e te whakamahia ai mo te hanga o te tākainga me ngā. Na, e pā ana ki te toru o te hanga haere i roto i ki te waihanga i tētahi niao ipu patu, whakamahia nei i roto i te ahumahi kai, poke, automotive, kiritaki, mara pūngao me kiriata. Ko e taea te kitea i te reira, no te hanga ngongo, me te putorino wahi. He painga nui o tenei rauemi, ko tona mauroa, utu iti me te noho pai o te fehokotaki'anga.

polyethylene kiato iti

Ko tēnei rauemi rapa te marama crystallizable ki te ātete wera (kahore kawenga) i roto i te whānui i -120 ki +90 degrees. He kaha ti'aturi i runga i te kiato o te rauemi hua hoki Āhuatanga. Ko te kupu i reira ko te hua o te kaha, pakeke, pakeke me te ātete matū. Fakataha ki paa kino tenei matotoru polyethylene te kaha pānga, elongation, anganga resistance me te uruhanga ki haurehu me kohu. I tua atu, he mea kahore pūmautanga ahu rerekē, me te pānga tino kino i kawenga āhua iti. Me kï hoki ātete matū pono tiketike, me te pai ngā āhuatanga uruhanga. Mai i kino - i runga i te polyethylene he ngako kino, hinu, me te radiation katinga. Biologically e mangere, e taea te ngāwari hangarua. tonu hoki te āhuatanga rite ātete ki te radiation. Ka taea te kite tono o tiketike-kiato polyethylene tino ka hanga hangarau, kai me kiriata ahuwhenua. Ahakoa, o te akoranga, e kore ko reira anake te kōwhiringa.

polyethylene rārangi

Ko reira crystallizes he rauemi rapa. Ka taea e te tu te reira i pāmahana ake ki te 118 degrees. Ko tētahi atu painga nui o tenei rauemi, ko tona ātete ki te papatanga, resistance wera me te pānga kaha. Kei te whakamahia te reira mo pōkai whakangao, ngā me oko. He aha tuku te PE? Ko te āhuatanga o tenei rauemi, ko te tiketike rawa whakaritea ki te toi mua rite e te tikanga o te pēhanga iti. Na reira, kua ia he taonga tino pai. Ko tonu, rite ki te tikanga, e taea e kore te aifaito i te reira ki te polyethylene nui-pēhanga.

Ka rite ki taea te māngai reira e te rauemi?

Na, kua hipokina matou nga momo taketake o te polyethylene. I roto i te aha puka hanga reira? Ko te tino rongonui - he whārangi polyethylene me te kiriata. kia hangaia ēnei puka i tetahi kiato rauemi. Ahakoa tonu i reira e etahi manakohanga. Ko te kupu, mo te hanga o kiriata ngāwari, me te kikokore e whakamahia whānuitia huarahi pēhanga iti. Ko te whanui o te rauemi whiwhi, te nuinga tae 1400 mm, roa - 300 mita. Linear polyethylene iti kiato, me te ake mārō, Heoi, e whakamahia ratou mo hanganga e kore me pāngia e: te taua pepa, i hanga, me te whakarewa tuhinga, me te pera i runga i.

mutunga

A hopea, e kore ki te whakahua i te tuhinga ture, kia rite ki nei me te polyethylene hua. GOST 16338-85 kawenga mō te hanga i hanga nei i te pēhanga iti. Mahi i te reira atu i roto i te tau 1985. GOST 16337-77 faatere te take e pā ana ki te polyethylene nui-pēhanga. Ko ara atu koroheke ia ka rā hoki ki te 1977 tau. Kei roto ngā mōhiohio e pā ana ki te whakaritenga mo nga rauemi i nei e hangaia me kiriata, tākai me te tahi atu ngā hua ēnei tuhinga normative. Ano, kia tuhia te reira i te whānui o te tono o nga hua whiwhi me tona kanorau momo ngā. Ko te kupu, hei tauira, whakapakaritia rawa noa polyethylene kiriata. Ratou taa ko e mo te taua matotoru he upoko me pokohiwi ki runga ake o ratou āhuatanga atu te tauira hua tikanga. O te taua kiriata polyethylene whakapakaritia hanga tupenu'ufi'ufi, peke, me te maha atu nga mea whai hua. E whiwhi ratou āhuatanga i te whakataki o ngangana motuhake i muka tūturu waihanga ranei.