Ka Hana ʻana a me nā Noi ʻana o PTFE

He aha ka meaPTFE?

E hoʻomaka kākou i kā kākou ʻimi ʻana i ke ʻano maoli o ka PTFE. No ka hāʻawi ʻana i kona inoa piha, ʻo ka polytetrafluoroethylene kahi polymer synthetic i haku ʻia me ʻelua mau mea maʻalahi; kalapona a me fluorine. Loaʻa ia mai ka tetrafluoroethylene (TFE) a he mau waiwai kū hoʻokahi e hoʻolilo ai i mea pono i nā ʻano hana like ʻole. Eia kekahi laʻana:

Kiko heheʻe kiʻekiʻe loa: Me kahi kiko heheʻe ma kahi o 327°C, he kakaikahi loa nā kūlana kahi e hōʻino ʻia ai ka PTFE e ka wela.

Hydrophobic: ʻO kona kūpaʻa i ka wai ʻo ia hoʻi, ʻaʻole ia e pulu, e pono ai i ka kuke ʻana, nā ʻaʻahu ʻeha a me nā mea hou aku.

ʻAʻole i hana kemika: ʻAʻole e hōʻino ka hapa nui o nā mea hoʻoheheʻe a me nā kemika i ka PTFE.

ʻO ke koina haʻalulu haʻahaʻa: ʻO ke koina haʻalulu o PTFE kekahi o nā mea haʻahaʻa loa o nā mea paʻa i ke ola, ʻo ia hoʻi, ʻaʻohe mea e pipili iā ia.

Ikaika kūlou kiʻekiʻe: ʻO kona hiki ke kūlou a pelu, ʻoiai i nā mahana haʻahaʻa, ʻo ia hoʻi hiki ke hoʻopili maʻalahi ʻia i nā ʻano ʻili like ʻole me ka ʻole o ka nalowale ʻana o kona kūpaʻa.

Ka hana ʻana o PTFE

Hiki ke loaʻa ka PTFE ma nā ʻano granular, dispersion a me ka pauka maikaʻi. He kiʻekiʻe ka mahana hoʻoheheʻe a me ka viscosity hoʻoheheʻe o ka PTFE Semi-crystalline, e paʻakikī ai ka extrusion maʻamau a me ka hoʻoheheʻe injection. No laila, ʻoi aku ka like o ka hana ʻana o ka PTFE me ka hana ʻana o ka pauka ma mua o nā plastics kuʻuna.

Hana ʻia ka PTFE Granular i loko o kahi hopena polymerisation hoʻokuʻu wai. Hoʻoponopono pinepine ʻia ka resin granular hopena i ke ʻano ma o ka hoʻoheheʻe ʻana i ka compression. Hana ʻia nā huahana hoʻolaha PTFE ma ke ʻano like, me nā mea hoʻolaha hoʻohui. Hiki ke hoʻohana ʻia nā huahana hoʻolaha no nā uhi PTFE a i ʻole hiki ke hana ʻia i loko o kahi ʻili lahilahi ma o ka hoʻolei ʻana i ka ʻili. Hana ʻia ka pauka PTFE i loko o kahi hopena polymerisation emulsion. Hiki ke hoʻopili ʻia ka pauka maikaʻi i hoʻopuka ʻia i loko o nā lipine PTFE, nā paipu PTFE, a me ka insulation wire, a hoʻohana ʻia paha ma ke ʻano he mea hoʻohui e hoʻonui i ke kūpaʻa ʻana i ka corrosion i nā mea polymeric ʻē aʻe.

Nā noi 5 kiʻekiʻe o ka PTFE

1. Hoʻohana ʻia nā waiwai anti-corrosion

ʻAʻole hiki i ka laholio, ke aniani, ka metala metala a me nā mea ʻē aʻe ke hoʻokō i nā kūlana koʻikoʻi o ka mahana, ke kaomi a me ke kaiapuni noho like ʻana o nā mea kemika ma muli o ko lākou mau hemahema i ke kūpaʻa ʻana i ka pala. Eia nō naʻe, he kūpaʻa maikaʻi loa ka PTFE i ka pale ʻana i ka pala a no laila ua lilo ia i mea nui e kū i ka pala no ka ʻaila, kemika, ka lole a me nā ʻoihana ʻē aʻe.

2. Hoʻohana ʻia nā waiwai haʻalulu haʻahaʻa i ka ukana

ʻAʻole kūpono ka lubrication aila no nā ʻāpana friction o kekahi mau lako, no ka mea hiki ke hoʻoheheʻe ʻia ka grease lubricating e nā solvents a ʻaʻole hana, a i ʻole nā ​​​​huahana i loko o nā lāʻau lapaʻau, meaʻai, lole a me nā ʻoihana ʻē aʻe e pono e pale i ka waihoʻoluʻu ʻia e nā lubricants. No laila, ʻo ka plastik PTFE, nona ka coefficient of friction i haʻahaʻa ma mua o nā mea paʻa ʻē aʻe i ʻike ʻia, ua lilo ia i mea kūpono loa no ka lubrication ʻole aila (direct load bearing) o nā ʻāpana lako mechanical.

3. Hoʻohana ʻia ma ka uila a me ka uila

ʻO ka pohō haʻahaʻa kūlohelohe a me ka dielectric constant liʻiliʻi o ka mea PTFE e hiki ai iā ia ke hana ʻia i uea enameled no nā micro motors, thermocouples a me nā mea hoʻomalu. ʻO ka PTFE film ka mea insulation kūpono no ka hana ʻana i nā capacitors, ka liner insulation radio, nā kaula insulated, nā motors a me nā transformers, a ʻo ia kekahi o nā mea pono ʻole no ka aerospace a me nā ʻāpana uila ʻoihana ʻē aʻe.

4. Hoʻohana ʻia i ka lāʻau lapaʻau

He inert wale nō ka PTFE i hoʻonui ʻia a hiki ke hoʻololi ʻia i ke ʻano biologically, no laila ʻaʻole ia e hōʻole ʻia e ke kino, ʻaʻohe ona hopena ʻaoʻao physiological i ke kino o ke kanaka, hiki ke hoʻomaʻemaʻe ʻia e kekahi ʻano hana, a he ʻano multi-microporous.

5. Hoʻopili ʻia o nā waiwai anti-adhesive

Me ka haʻahaʻa loa o ka ʻilikai o kekahi mea paʻa, ʻaʻole pipili ka PTFE Teflon i kekahi mea. Eia kekahi, he kūpaʻa maikaʻi loa ia i nā mahana kiʻekiʻe a me ka haʻahaʻa. ʻO ka hopena, ua hoʻohana nui ʻia ia i ka hiʻohiʻona anti-adhesive o nā pā non-stick.