Pākīpika Polystyrene(PS)
* PS plastic - polystyrene. He papa ia o nā plastic me ka hui styrene i loko o ke kaulahao macromolecular, ʻo nā ʻano nui he polystyrene maʻamau (GPPS), polystyrene hopena kiʻekiʻe (HIPS), polystyrene expandable (EPS) a me metallocene polystyrene (SPS) a pēlā aku. ʻO kona mau hiʻohiʻona he kala ʻole, ʻala ʻole a ʻono ʻole.
* Nā huahana plastik PS i hoʻopilikino ʻia
ʻO ka polystyrene he thermoplastic kala ʻole a maopopo, ʻo ka polystyrene resin kumu nui he polymer amorphous, nona ka polystyrene hoʻonui i kapa ʻia ʻo Styrofoam. Loaʻa iā ia ka mahana hoʻololi aniani i ʻoi aku ka kiʻekiʻe ma mua o 100 degere Celsius, no laila e hoʻohana pinepine ʻia e hana i nā ʻano pahu like ʻole e pono ai ke kū i ka mahana o ka wai paila, e like me nā pahu styrofoam.
He aha kāu e hana ai me PS Plastic?
He maikaʻi ka ʻike o PS (ka māmā o ka lawe ʻana i ka 88% -92%) a me ka ʻālohilohi o ka ʻili, maʻalahi ke kala, kiʻekiʻe paʻakikī, ʻoi aku ka maikaʻi, ʻoi aku ka maikaʻi o ka pale wai, ke kūpaʻa kemika a me ka hana kahe ʻana. ʻO kāna mau hemahema nui: brittle, haʻahaʻa haʻahaʻa ikaika, maʻalahi i ke koʻikoʻi i ka haki ʻana, maikaʻi ʻole ka wela.
ʻO PS ka haʻahaʻa haʻahaʻa o ke kumukūʻai hana o ka plastic, hoʻohana nui ʻia i nā huahana disposable. Hoʻohana nui ʻia ia i nā huahana disposable, e like me ka papa ʻaina disposable, a me nā mea kākau a me nā mea e pono ai i kēlā me kēia lā.
Eia kekahi mau noi no ka Polystyrene (PS)
- Nā lako kīʻaha hoʻopau
- Nā lako uila
- ʻāpana ʻāpana uila
- Hoʻopili ʻia
- Nā mea pāʻani keiki
- Puke Puke
- Pale kukui
- Nā pahu
- Nā mea hana hale
- Nā huahana mea kūʻai aku
- Nā lako kīhāpai
- Nā lako aʻo
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Nā ʻano o ka Polystyrene (PS).
* Ma muli o ke ʻano o ka PS hiki ke helu ʻia ma ke ʻano he "thermoplastic" a i ʻole ka "thermoset". Pili ka inoa i ke ʻano o ka pane ʻana o ka plastic i ka wela. Lilo piha nā mea Thermoplastic i ko lākou helu heheʻe (210-249 degere Celsius ma ka hihia o Polystyrene), akā hoʻomaka lākou e kahe i ko lākou wahi hoʻololi aniani (100 degress Celsius no PS).
* ʻO kahi hiʻohiʻona koʻikoʻi e pili ana i nā thermoplastics ʻo ia ka hiki ke hoʻomehana ʻia a hiki i ko lākou wahi heheʻe, hoʻomaloʻo, a hoʻomaʻamaʻa hou ʻia me ka ʻole o ka pōʻino nui. Ma kahi o ke ahi, hoʻoheheʻe ʻia nā thermoplastics, kahi e hiki ai iā lākou ke hoʻoheheʻe maʻalahi a laila hana hou ʻia. ʻO nā plastic thermoset, ma ka ʻokoʻa, ʻaʻole e hoʻokuʻu i ka wā i "hoʻonohonoho ʻia" i ke ʻano paʻa.
Pehea i hana ʻia ai ka mea PS?
Hoʻomākaukau ʻia ka Polystyrene (PS) e nā ʻano hana synthesis (polymerization) e like me ka polymerization propriety, polymerization suspension, emulsion polymerization, ionic polymerization a pēlā aku. ʻO ka noi ʻoihana ʻoi aku ka polymerization kino a me ka polymerization suspension. I kēia manawa, hana ʻia ka hana ʻenehana o nā resins PS series e ka hana polymerization mau.
ʻO ka resin PS i hana ʻia e ka polymerization he ʻokoʻa maikaʻi a me nā waiwai uila, akā aia ka molecular mass distribution ʻaʻole like, ʻoiai ʻo ka polymerization suspension ma muli o ka maʻalahi o ka mālama ʻana, ua maʻalahi ka hoʻolaha ʻana o ka wela, ʻo ka hana ʻana o ka resin PS he ʻano like ʻole ka hoʻokaʻawale ʻana, nā ʻano o ka hana holoʻokoʻa, akā e waiho ka huahana i kahi liʻiliʻi o ka hoʻopuehu ʻana i ka huahana.
ʻO ka polystyrene (PS) ka hoʻopōmaikaʻi ʻana a me ka mālama ʻana i ke kaiapuni
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