Te muka polypropylene

Ko te muka polypropylene he polymerization propylene, he rewa takahuri, na te kore o nga ngota o te roopu o te roopu, he iti te kaha o te intermolecular, na te mea he maeneene ake te mekameka ngota, na reira ko te mahana o te whakawhiti karaihe o te polypropylene i raro i te 0 ℃, ko te muka me mau ki te polypropylene polymerization, hangaia ia ngota o te polypropylene macromolecule me nga roopu e toru nga waahanga hei waahanga whakarite, ka tae ki te 165-170 ℃, ko te rewa rewa na te kukume o te propylene i waenga o nga ngota ngota iti, no reira ko te taumaha ngota o te kara polypropylene i te 200000 neke atu ranei, ko te pokepoke rewa, na reira, ka ngohe te mana o te mahana i runga ake i te 100 ℃ ki runga ake i te ira rewa, he 285 ℃ neke atu ranei. He pai te mekameka polypropylene rāpoi ngota me te pai o te mahinga, a he maama noa te kowhiri i te waa o te hurihuri. Ko te maatanga o te muka tuatahi tae atu ki te 50%. Ka hurihuri ana, ko te paemahana o te ruuma hiraka e whakahaerehia ana i raro iho i te 30 ℃, kia taea ai e te muka tuatahi te whakaputa i nga tioata pseudo-hexagonal kore, he ngawari ki te toro atu i te wa o te tukatuka. Ko te whakarite i te muka polypropylene matotoru ka taea te whakamahi i te tikanga kiriata angiangi nei mo te taputapu poto-whatu awhiawhi, te kaiwhakaputa mai i te kiriata rongoa me nga riu o te roera hei wehe ki te muka. Ko te polypropylene fiber density is 0.91 g / cm ', ko te muka matū kei roto i te maarama o te momo, kaore te muka e ngongo i te makuku, i raro i nga tikanga paerewa, ko te tere o te hokinga o te makuku ka tata atu ki te 0, te ahua maroke me te waikore kaore he panoni nui, kaore he pokepokea ai. a kaore he purehurehu. Na te kore-hygroscopicity, he uaua te tae, ka taea te whakamahi i te tikanga tae tae miro ki te whakatau i te raru o te tae polypropylene, engari kaore i oti te chromatography.

Ko te kaha o te muka polypropylene me te timatanga tuatahi he tiketike, tata ki te polyester, he pai te aukati o te kakano me te whakaraerae, engari ka piki te kawenga, he nui ake te roa o te ngongo ngongo polypropylene i te polyester, i raro i te awangawanga nui me te kaha o te whatianga he teitei ake i te polyester, na he muka polypropylene he muka kaha, uaua hoki.

He tino iti te pāmahana karaihe muka polypropylene, no reira kaore i pumau te paanga o te wera. Ko te tohu ngohengohe ko 140-150 ℃, a, ko te tohu rewa he 165-173 ℃. Ka rewa ki tetahi taha ka tahuna marie ki tera taha i te mura o te ahi.

Ko te kawe waiariki i roto i te muka te mea iti, pai te mahi mātao. Ko te Polypropylene he mekameka mekameka waro, mekameka macromolecular kaore he hononga ngoikore, he pai te pumau o te matū, i tua atu i te waikawa ngota, te waikawa hauota me etahi atu whakangaro waikawa waikura, he pai te aukati ki etahi atu waikawa. Te aukati Alkali, hei tapiri atu ki te houra caustic kaha,

Kaore he painga o te alkali ki te kaha o te polypropylene. Ko te Polypropylene e aukati ana ki nga whakarewa koiora whaanui penei i te etanol, te etyl ether, benzene, acetone, penehini, tetrachlorethylene kaore i te rewa i roto i te benzene wera me te pupuhi penehini, ka taea te mimiti i roto i te wera chlorobenzene, tetrahydronaphthalene me dechydronaphthalene.

He pai te miihini hiko pai i te muka Polypropylene muka, engari he maamaa te kohikohi hiko hiko i te tukatuka, a he ngoikore te wini o te muka polypropylene ma.

He ngawari te pakeke o te muka Polypropylene, na te mea ko te ngota hauwai i runga i te ngota waro tuatoru o te mekameka polypropylene macromolecular e tino kaha ana, e ngawari ana ki te awangawanga o te rama, te wera me te aha, ka whakaputa i te tuwhena koreutu, tauhohenga whakaheke, e whakatairanga ana i te whati o te mekameka macromolecular. Ka penapena nga muka polypropylene isotactic i te 50 ℃ mo te tau kotahi, ka ngaro te uara. Hei aukati i te koroheketanga, ka taapirihia e te hurihuri te kaihoko anti-hoholo, kia puhoi ai te mahinga o te koroheketanga, te pai ake o te keto o-hydroxydiphenyl me te nikara kei roto nga putunga rauropi auri, me te taapiri i te 1% ki te 3% graphite hei aukati i te koroheke. te mea tino whaihua, engari kaore e pai mo te hanga ma te muka ma.

Ko te muka polypropylene na te utu whakanao he iti, ko te waahanga iti me te tino pai o te tinana me nga taonga matū ka tere haere te whanaketanga, i tua atu i te maha o nga mea e whakamahia ana mo te hanga papanga umanga, papanga kore-whatu, i tiimata ki te whakakakahu. ina koa na te muka polypropylene he mahi nui ki te ngongo, ka taea na roto i te papanga o te kohu wai rere atu, kaore he painga o te ngongo, kia maroke te kiri, he kakahu hākinakina whakakahu, kakahu me etahi atu taputapu a-ringa e uru ana ki te ngongo, etc.


Te wa tuku: Jun-03-2019

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