ʻOiai ʻo ka nitrile butadiene rubber (NBR) ʻo ia ka mea nui o ka wind turbine seal material no nā makahiki he mau makahiki, ʻo ka holomua o ka hoʻokumu ʻana i ka sila polyurethane, ka hana ʻana a me ka hoʻolālā e hoʻopau koke i ke kūlana o NBR i ka ʻoihana.ʻIke ʻia ʻo nā waiwai pono loa e pili ana i ka pale ʻana i ka lole, ka hoʻohālikelike ʻana i ka wai, ka pale ʻana o ka ozone, ka ikaika mechanical, a me ka hiki ke mālama i kēia mau waiwai āpau i nā haʻahaʻa haʻahaʻa.
Ua lilo ka Polyurethane i mea kūpono no ka hoʻopaʻa ʻana i nā bearings / generators, longitudinal a me nā bearings transverse.Eia naʻe, ʻaʻole lawa ka hoʻololi wale ʻana i nā mea i loko o kahi hale e kū nei.Pono e hoʻolālā ʻia nā sila me ka polyurethane i ka noʻonoʻo.
ʻO kahi ala e loiloi ai i ka pale ʻana o nā polyurethanes ma o ka hoʻāʻo ʻana i ka pahu pahu maʻamau e like me ASTM D5963.Hoʻohana maʻamau kēia ʻano no ka loiloi ʻana i ka lāʻau lapaʻau, akā pili pū kekahi i ka polyurethane, ʻoi aku hoʻi i ka hoʻohālikelike ʻana i nā kumukūʻai lole.Aia ma lalo iho nā waiwai helu helu no nā mea like ʻole i hoʻāʻo ʻia e System Seals ma Cleveland.E hoʻomaopopo he ARI ka NBR a me ka HNBR ma kahi o 1.5, aʻo ka polyurethanes he ARI o 4 a 8. He hoʻomaikaʻi kēia a hiki i ʻeono manawa.
Mālama ʻo Polyurethane i kāna mau waiwai ARI i ka manawa a ma hope o ka ʻike ʻana i nā wai like ʻole, ʻoi aku ka wai o ka aila.ʻO kahi ala e hoʻoholo ai i kēia, ʻo ka hoʻohana ʻana i ka makahiki ASTM D5963 i nā laʻana i loko o ka wai ma 100°C no 90 mau lā (80°C no nā wai wai) a hana hou i ka hoʻāʻo ʻana i kēlā me kēia 30 lā.Aia ma lalo nā hopena maʻamau, akā ʻōlelo ʻia ka hōʻoia no kēlā me kēia wai.
Kiʻi 3. Ka paʻa ʻana o ka ARI i ka NBR a me ka polyurethane kūpaʻa hydrolysis ma hope o ka ʻelemakule ma ka ʻaila mineral distilled ma 100 ° C.
ʻOiai e hōʻike ana nā kikoʻī i ka hoʻohālikelike ʻana me nā wai i hoʻopau ʻia, ʻo ka hoʻāʻo ʻana i ka wā kahiko (a i ʻole nā makahiki o ka lawelawe) pono e hoʻoholo i ka hana lōʻihi a me ka paʻa o nā mea i ʻike ʻia i nā wai kikoʻī.Hoʻāʻo ʻo System Seals no ka hoʻohālikelike ʻana i ka wai no nā lā 90 ma mua o ka hoʻāʻo 168 hola maʻamau no ka mea ʻike mau ʻo System Seals i nā loli nui i nā waiwai waiwai nui ma hope o 168 mau hola o ka hoʻolaha ʻana i ka wai.
Hōʻike ka polyurethane maʻamau i ka hoʻomaikaʻi ʻana i ka wai i hoʻohālikelike ʻia me NBR i nā lubricants maʻamau i ka ʻoihana ikehu makani.Aia ma lalo kahi papa hoʻohālikelike no kēia mau lubricants kaulana.
ʻIke ʻia ʻo NBR i hiki ke hoʻopaʻa ʻia i ka ozonolysis, ʻo ia ka wā e wāwahi ai nā molekala ozone i nā paʻa kemika i ka NBR unsaturated.He mea maʻamau ka pohā o ka ozone i ka wā e hoʻololi ʻia ai ka nitrile butadiene rubber (NBR).ʻO kahi hoʻonā e hoʻokomo i ka wax i loko o ka NBR, e hana ana i kahi pale anti-ozone e pale ai i ka NBR.ʻO ka mea pōʻino, ʻaʻole hoʻololi ka wax i ka paʻa kemika o NBR.Inā ʻike ʻia ʻo NBR i nā kūlana kaiapuni e hoʻoneʻe ai i ka wax, lilo ia i mea maʻalahi i ka pōʻino hou.ʻO kekahi mau polyurethanes kūikawā i hoʻohana ʻia i nā sila ikehu makani e kū maoli i ka ozone.
ʻO ka modulus elastic, ikaika a me ka elongation o ka polyurethane ʻelua a ʻekolu mau manawa kiʻekiʻe ma mua o ka nui o ka NBR.ʻO ka hopena, hiki i nā sila polyurethane ke pale aku i nā deformations mechanical nui aʻe a kū i nā ukana mechanical kiʻekiʻe.
ʻO kahi NBR maʻamau he modulus elastic o 10-15 MPa a me ka ikaika tensile o 20 MPa.ʻO ka hapa nui o nā polyurethanes he modulus elastic o 45-60 MPa a me ka ikaika tensile o 50-60 MPa.ʻO ia ka mea ʻoi aku ka paʻakikī o ka mea ma mua o ka NBR, ʻo ia ka mea ʻoi aku ka maikaʻi o ka paʻa ʻana o ke ʻano a me ke kūʻē ʻana i nā haʻahaʻa kaomi.
I loko o nā huila makani, ʻaʻole pilikia ka wela kiʻekiʻe.Eia naʻe, ma muli o ka wahi a me ke kiʻekiʻe, ʻaʻole maʻamau ka haʻahaʻa haʻahaʻa o -40 ° C.Loaʻa i ka NBR maʻamau ka mahana hana haʻahaʻa o -20°C, a ua hōʻike ʻia ka loiloi mechanical dynamic he nui nā polyurethanes ikehu makani ʻaʻole i hoʻopilikia ʻia e nā mahana a hiki i -40°C.
ʻO ka Polyurethane kahi koho maʻamau no nā sila mana makani ma muli o kāna mau waiwai mechanical maikaʻi, ʻoi aku ka maikaʻi o ka pale ʻana o ka ozone, nā haʻahaʻa haʻahaʻa a me nā haʻahaʻa haʻahaʻa haʻahaʻa.Aia ma lalo iho nā ʻohana ʻelua o nā noi no ka polyurethane i kūpono.Hōʻike ke kiʻi ma ka ʻaoʻao hema i ka hoʻohālikelike ʻana a me nā hiʻohiʻona hoʻopili ʻana o kahi sila hali polyurethane.Hōʻike ke kiʻi ma ka ʻākau i ke sila swirl Seals System, kahi sila hoʻopaʻa nui e hoʻomau mau ana i ka lubricant i loko o ka waihona i ka wā e kaʻa ai ka bearing.
Inā makemake ʻoe e hāʻawi i ka Windpower, e ʻoluʻolu e kelepona mai iā mākou: https://www.bdseals.com a i ʻole www.bodiseals.com.Hoʻopuka ʻo NINGBO BODI SEALS CO., LTD i nā ʻano like ʻole o nā ʻano like ʻole,orings ,Nā ʻaʻahu .
Ka manawa hoʻouna: Dec-24-2023