He aha ka mea i hana ʻia ai ka paipu ptfe?
Hoʻolauna huahana
1,Paipu Ptfeʻo ia kekahi inoa no ka polytetrafluoroethylene, ʻo ka pōkole Pelekane ʻo PTFE, (i ʻike nui ʻia ʻo "Plastic King, Hara"), a ʻo ke ʻano kemika ʻo -(CF2-CF2)n-. Ua ʻike hewa ʻia ʻo Polytetrafluoroethylene i ka makahiki 1938 e ke kemika ʻo Kauka Roy J. Plunkett ma DuPont'ʻO Jackson Laboratory ma New Jersey, USA I kona hoʻāʻo ʻana e hana i kahi chlorofluorocarbon hou ma ke ʻano o ka refrigerant hui. ʻO nā huahana o kēia mea i kapa ʻia ʻo "non-stick coating"; he mea polymer synthetic ia e hoʻohana ana i ka fluorine e pani i nā ʻātoma hydrogen āpau i loko o ka polyethylene. Kūpaʻa kēia mea i nā waikawa, alkalis, a me nā mea hoʻoheheʻe organik like ʻole, a aneane hiki ʻole ke hoʻoheheʻe ʻia i nā mea hoʻoheheʻe āpau. I ka manawa like, loaʻa iā PTFE nā ʻano o ke kū'ē ʻana i ka mahana kiʻekiʻe, a he haʻahaʻa loa kona coefficient friction, no laila hiki ke hoʻohana ʻia ma ke ʻano he ala lubrication, a ua lilo ia i mea uhi kūpono no ka papa o loko o nā ipu hao ʻole a me nā paipu wai.
Hoʻohana nui ʻia nā mea o kēia huahana ma nā huahana aʻe:
PTFE, FEP, PFA, ETFE, AF, NXT, FFR.
PTFE: Hiki ke hoʻohana mau ʻia ka uhi ʻaʻole stick PTFE (polytetrafluoroethylene) ma 260°C, me ka mahana hoʻohana kiʻekiʻe loa o 290-300°C, haʻahaʻa loa ke koina friction, kūpaʻa maikaʻi i ka ʻaʻahu a me ke kūpaʻa kemika maikaʻi loa.
FEP: Hoʻoheheʻe ʻia ka uhi ʻole pipili o ka FEP (fluorinated ethylene propylene copolymer) a kahe e hana i kahi ʻili ʻaʻole porous i ka wā e hoʻomoʻa ai. Loaʻa iā ia ke kūpaʻa kemika maikaʻi loa a me nā ʻano pipili ʻole maikaʻi loa. ʻO ka mahana hoʻohana kiʻekiʻe loa he 200℃.
PFA: Hoʻoheheʻe a kahe ka uhi ʻole o ka PFA (perfluoroalkyl compound) i ka wā e hoʻomoʻa ai e hana i kahi ʻili ʻaʻole porous e like me FEP. ʻO ka pōmaikaʻi o PFA, ʻoi aku ka kiʻekiʻe o ka mahana hoʻohana mau o 260°C, ʻoi aku ka ikaika o ka ʻoʻoleʻa a me ka paʻakikī, a kūpono loa no ka hoʻohana ʻana i nā noi anti-sticking a me ke kūpaʻa kemika ma lalo o nā kūlana mahana kiʻekiʻe.
ʻO ka PTFE (Polytetrafluoroethene) kahi mea polymer synthetic e hoʻohana ana i ka fluorine e pani i nā ʻātoma hydrogen āpau i loko o ka polyethylene. Kūpaʻa kēia mea i nā waikawa, alkalis, a me nā mea hoʻoheheʻe organik like ʻole, a aneane hiki ʻole ke hoʻoheheʻe ʻia i nā mea hoʻoheheʻe āpau. I ka manawa like, loaʻa i ka paipu ptfe nā ʻano o ke kūʻē ʻana i ka mahana kiʻekiʻe, a he haʻahaʻa loa kona coefficient friction, no laila hiki ke hoʻohana ʻia no ka lubrication, a ua lilo ia i uhi kūpono no nā woks maʻalahi e hoʻomaʻemaʻe a me nā paipu wai. Hiki ke hoʻohana ʻia no ke kūʻē ʻana i ka corrosion pipeline, ke kūʻē ʻana i ke ana wela kiʻekiʻe a me ka haʻahaʻa, a me ke kūʻē ʻana i ka corrosion. Hoʻohana ʻia i nā wahi ʻino e like me ka lubrication, ʻenekinia, nā mea uila, nā mīkini uila, a me ka mokulele.
Nā hiʻohiʻona huahana
1, ke kū'ē ʻana i ke ana wela kiʻekiʻe a me ka haʻahaʻa: liʻiliʻi ka hopena ma ka mahana, ākea ka laulā o ka mahana, pili ka mahana -65 ~ 260 ℃.
2, ʻAʻole pipili: ʻAneʻane ʻaʻole pili nā mea āpau i ka ʻili PTFE. Hōʻike pū nā ʻili lahilahi loa i ka hana maikaʻi ʻole o ke komo ʻana. 2. Ke kūpaʻa wela: Loaʻa i ka ʻili uhi PTFE ke kūpaʻa wela maikaʻi loa a me ke kūpaʻa haʻahaʻa. Hiki iā ia ke kū i nā mahana kiʻekiʻe a hiki i ka 300°C i ka manawa pōkole, a hiki ke hoʻohana mau ʻia ma waena o 240°C a me 260°C. Loaʻa iā ia ke kūpaʻa wela koʻikoʻi. Hiki iā ia ke hana i nā mahana hau me ka ʻole o ka embrittlement a ʻaʻole e heheʻe i nā mahana kiʻekiʻe.
3、ʻAno paheʻe: ʻOi aku ka kiʻekiʻe o ke koina o ka friction o ka ʻili uhi PTFE. Hoʻololi ke koina friction i ka wā e paheʻe ana ka ukana, akā aia wale nō ka waiwai ma waena o 0.05-0.15.
4, Ke kū'ē ʻana i ka makū: ʻAʻole pipili ka ʻili o ka ʻili uhi PTFE i ka wai a me ka ʻaila, a ʻaʻole maʻalahi ke pipili i ka hopena i ka wā o ka hana ʻana. Inā he lepo liʻiliʻi, e holoi wale. Hoʻopau ʻia ka manawa pōkole, mālama i nā hola hana a hoʻomaikaʻi i ka hana pono.
5. Kū'ē i ke komo ʻana: He kūpaʻa maikaʻi loa ia ma lalo o ke kaumaha kiʻekiʻe. Ma lalo o kekahi ukana, loaʻa iā ia nā pono pālua o ke kūpaʻa ʻana i ke komo ʻana a me ka pale ʻole.
6, Ke kū'ē'ē ʻana i ka palaho: ʻAʻole i pala ka PTFE e nā kemika, a hiki ke kū i nā waikawa ikaika a pau (me ka aqua regia) a me nā mea hoʻomake ikaika koe wale nō nā metala alkali i hoʻoheheʻe ʻia, nā mea fluorinated a me ka sodium hydroxide ma luna o 300 ° C. ʻO ke kuleana o ka mea hōʻemi a me nā mea hoʻoheheʻe organik like ʻole hiki ke pale i nā ʻāpana mai kekahi ʻano palaho kemika
waiwai kemika
1, Insulation: ʻAʻole i hoʻopilikia ʻia e ke kaiapuni a me ke alapine (frequency), hiki i ke kū'ē ʻana o ka leo ke hiki i 1018 ohm·cm, liʻiliʻi ka pohō dielectric, a kiʻekiʻe ke anakahi uila.
2, ke kū'ē ʻana i ke ana wela kiʻekiʻe a me ka haʻahaʻa: liʻiliʻi ka hopena ma ka mahana, ākea ka laulā o ka mahana, pili ka mahana -190 ~ 260 ℃.
3, Self-lubricating: Loaʻa iā ia ka liʻiliʻi loa o ka friction ma waena o nā plastics a he mea lubricating aila-ʻole kūpono.
4, ʻAʻole e pipili ka ʻili: ʻaʻole hiki i nā mea paʻa i ʻike ʻia ke hoʻopili i ka ʻili, he mea paʻa ia me ka ikehu ʻili liʻiliʻi loa.
5, ke kūpaʻa ʻana i ka wā, ke kūpaʻa ʻana i ka radiation a me ka permeability haʻahaʻa: ʻo ka lōʻihi o ka hōʻike ʻana i ka lewa, ʻaʻole i loli ka ʻili a me ka hana.
6, Incombustibility: ʻO ka helu kuhikuhi palena oxygen ma lalo o 90.
7, Hoʻohana nui ʻia ka PTFE i nā ʻoihana e koi ana i ke kūpaʻa wela kiʻekiʻe a me ka viscosity kiʻekiʻe. Hiki ke hoʻohana ʻia ka super acid-fluoroantimonic acid ikaika loa no ka mālama ʻana
Wahi noi huahana
Hiki ke hoʻokumu ʻia ka Polytetrafluoroethylene ma ke kaomi ʻana a i ʻole ka hoʻopuka ʻana; hiki ke hana ʻia i loko o kahi kiʻiʻoniʻoni a laila ʻokiʻoki i loko o kahi lipine PTFE i kau ʻia ma ke koʻokoʻo ke hoʻohana ʻia i nā uea wela kiʻekiʻe. Hoʻohana ʻia ia e hana i nā uea alapine kiʻekiʻe a hana pololei ʻia i loko o ka hoʻopuehu wai. Hiki ke hoʻohana ʻia no ka uhi ʻana, ka impregnation a i ʻole ka hana fiber.
Hoʻohana nui ʻia ka Polytetrafluoroethylene i nā ʻoihana e like me ka ikehu nukelea, ka pale kaua aupuni, ka aerospace, nā mea uila, ka uila, ka kemika, nā mīkini, nā mea kani, nā mika, ke kūkulu ʻana, nā lole, ka mālama ʻana i ka ʻili metala, nā lāʻau lapaʻau, ka mālama ola, ka meaʻai, ka metallurgy a me ka hoʻoheheʻe ʻana, a pēlā aku. ʻO nā mea ʻino, nā mea hoʻokaʻawale, nā uhi anti-stick, a pēlā aku e hoʻolilo iā ia i huahana hiki ʻole ke hoʻololi ʻia.
Paipu PTFELoaʻa iā ia nā waiwai piha maikaʻi loa, ke kūpaʻa wela kiʻekiʻe, ke kūpaʻa ʻana i ka pala, ka ʻaʻole e pipili, ka lubricating ponoʻī, nā waiwai dielectric maikaʻi loa, a me kahi coefficient friction haʻahaʻa loa. Hoʻohana ʻia e like me nā plastics ʻenekinia, hiki ke hana ʻia i loko o nā paipu PTFE, nā koʻokoʻo, nā kāʻei, nā papa, nā kiʻiʻoniʻoni, a pēlā aku. Hoʻohana nui ʻia i nā pipelines pale i ka pala, nā ipu, nā pamu, nā valves, radar, nā lako kamaʻilio alapine kiʻekiʻe, nā lako lekiō, nā radomes, a pēlā aku me nā koi hana kiʻekiʻe. I ka hoʻohui ʻana i kekahi mea hoʻopihapiha e hiki ke kū i ka mahana sintering o ka polytetrafluoroethylene, hiki ke hoʻomaikaʻi nui ʻia kona mau waiwai mechanical. I ka manawa like, mālama ʻia nā waiwai maikaʻi ʻē aʻe o ka PTFE. ʻO nā ʻano i hoʻopiha ʻia e komo pū me ke aniani fiber, metal, metal oxide, graphite, molybdenum disulfide, carbon fiber, polyimide, EKONOL, a pēlā aku. Hiki ke hoʻonui ʻia ke kūpaʻa ʻana a me ka palena o ka waiwai PV e 1000 mau manawa.
Nā hulina e pili ana i ka hose ptfe:
Ka manawa hoʻouna: Ian-07-2021