Pehea e hoʻoikaika ai i ke kūpaʻa ʻana o ka plastik a me ke kūpaʻa ʻana i ka ʻaʻahu

E koho i ka resin kumu kūpono

ʻO ka maʻamau, ʻo ka polyethylene kaumaha molekala kiʻekiʻe loa (PE-UHWM) kekahi o nā plastics pale ʻaʻahu loa, a ʻo ke koho ʻana iā PE-U·HWM hiki ke hoʻomaikaʻi wale i ke kūpaʻa ʻaʻahu o ka mea. Eia kekahi, ʻoi aku ka paʻakikī o ka plastic me ka crystallization kiʻekiʻe a me ke ʻano maʻamau ma mua o ka paʻakikī kiʻekiʻe. I ka hoʻololi ʻana o ka polypropylene (PP), #mīkini pelletizing pp ʻO ka polyolefin elastomer (POE), ethylene propylene terene rubber (EPDM), thermoplastic dynamic vulcanized rubber (TPV) (e like me ka dynamic vulcanized PP/EPDM) e hoʻohana pinepine ʻia e hoʻoikaika i ka PP, a ʻo ka hoʻohui ʻana o nā elastomers e alakaʻi pinepine ai i ka emi ʻana o ke kū'ē ʻana i ke kahakaha ʻana, no laila he mea nui loa ke koho ʻana i ka elastomer kūpono. ʻO ke kaʻina o ke kū'ē ʻana i ke kahakaha ʻana penei: TPV > EPDM > POE. #mīkini hana granules pp.

E hoʻohana i ka mea hoʻopihapiha pale maikaʻi

(1) Molybdenum disulfide

ʻO Molybdenum disulfide, kahi mea hoʻohui pale ʻaʻahu, hoʻohana nui ʻia i nā plastik nylon. Hana ʻo Molybdenum disulfide ma ke ʻano he mea hoʻonani e hoʻonui i ka crystallinity o ka nylon, no laila e hana ka mea nylon i kahi ʻili paʻakikī a ʻoi aku ka pale ʻaʻahu. Loaʻa i ka Molybdenum disulfide kahi pilina kiʻekiʻe no ka metala, i ka wā e hoʻopili ʻia ai ma luna o ka ʻili metala, e hoʻopiha nā molekala molybdenum disulfide i ka ʻili metala me nā pores microscopic, a e ʻoi aku ka laumania o ka ʻili metala, ka mea e hoʻolilo ai i ka molybdenum disulfide i mea hoʻohui pale ʻaʻahu kūpono no nā hanana nylon a me ka metala.

(2) Graphite

ʻO ke ʻano o ka graphite ka ʻano kristal o ka graphite mineral, kahi papa hexagonal, ʻo kēia ʻano kemika kū hoʻokahi e maʻalahi ai nā molekala graphite e paheʻe kekahi i kekahi ke kau ʻia i ka friction liʻiliʻi, he mea nui loa kēia kū'ē ʻana i ke kapa i ke kaiapuni me ka wai, no laila ʻo ka graphite he mea hoʻohui kūpono e kū'ē i ke kapa i hoʻohana ʻia ma nā ʻāpana he nui i kau ʻia i loko o ka wai, e like me ka pūpū wai, ka pahi a me ke sila. #mīkini papa hoʻohālike hale pp #mīkini hana pepa huʻa xpe

(3) Aniani pulupulu

Hiki i ka fiber aniani ke hana i kahi pilina mechanical ikaika ma waena o nā polymers, no laila hiki i ka fiber aniani ke hoʻomaikaʻi i ka pono o nā ʻano thermoplastic a hoʻomaikaʻi i ke kūpaʻa ʻana i ka ʻaʻahu. Hāʻawi ka fiber aniani i ka hoʻoikaika a hiki ke hoʻomaikaʻi i ka conductivity thermal a me ka deformation thermal o nā plastics, e hoʻomaikaʻi nui ana i ke kūpaʻa ukana a me ke kūpaʻa ʻana i ka ʻaʻahu o nā plastics.

(4) olonā kalapona

#Mīkini Hui Pū ʻia CFRTP

E like me ke ʻano o ke olonā aniani, hiki i ke olonā kalapona ke hoʻomaikaʻi nui i ke kūpaʻa o ke ʻano o ka mea, ke kūpaʻa i ka ukana a me ke kūpaʻa i ka ʻaʻahu. ʻAʻole e like me ke olonā aniani, he olonā palupalu a emi iki ka ʻōpala o ke olonā kalapona, a ʻaʻole e ʻōpala ke olonā kalapona i ka ʻili friction o ka hao a kila paha e hamo ʻia ai.

E hoʻohui i nā mea hoʻohui kūpono e pale aku i ke komo ʻana

(1) Polytetrafluoroethylene (PTFE)

He haʻahaʻa loa ka coefficient o ka friction o Polytetrafluoroethylene (PTFE), a hana nā molekala PTFE i kahi ʻili lubricating ma luna o ka ʻili o ka ʻāpana i ka wā o ka friction. He maikaʻi ka lubricity o ka PTFE a me ke kūpaʻa ʻana i ka ʻaʻahu ma lalo o ka friction, a ʻo ia ka mea hoʻohui pale ʻaʻahu maikaʻi loa i nā noi ukana kiʻekiʻe. ʻO kēia mau noi ukana kiʻekiʻe e pili ana i nā sila piston ring hydraulic a me nā mea holoi thrust. ʻO ka nui o ka PTFE i loko o nā plastics amorphous he 15%, a i loko o nā plastics crystalline he 20% maʻamau.