Pehea ka hopena o ka PTFE Tape Coating Structure i ka pale ʻana i ka wai

I ka manawa Hoʻohana ʻia ka lipine adhesive PTFE no ka hoʻopaʻa ʻana i nā ʻāpana ʻeleʻele - e like me nā paʻa uila, nā flanges HVAC, a i ʻole nā ​​​​poʻi pahu kemika - he manaʻo maʻamau ʻo ka hydrophobicity o PTFE e hōʻoiaʻiʻo i kahi pale wai kūpono. ʻAʻole pololei kēia i nā manawa a pau.

He liʻiliʻi nā molekole mahu wai. Hiki iā lākou ke laha ma nā ala microscopic i hiki ʻole i ka wai nui. ʻO ka nui o ka hoʻouna ʻana i ka mahu wai maoli (WVTR) o ka lipine PTFE e hilinaʻi nui ʻia ma ke kemika o PTFE a ʻoi aku ka nui o ka hoʻopili ʻana - nā kīnā e like me nā micropores, microcracks, a me ka hoʻopili ʻana i ka fiber incomplete.

Ua nānā ʻo Aokai PTFE i ka WVTR ma waena o nā ʻano hoʻopili a me nā mānoanoa. Hōʻike kēia ʻatikala pehea e hui pū ai ke ʻano kemika o PTFE, nā hemahema o ka uhi ʻana, nā hoʻolālā mānoanoa, a me nā hoʻololi hoʻopihapiha e hoʻoholo ai i ka hana ʻana o ka pale mahu.

ʻO ka PTFE Chemical Structure - ʻO nā pono a me nā palena

1. Pono - Hydrophobicity a me Crystallinity

2. Nā palena - Nā Kūlana Amorphous a me nā Mana Intermolecular Nawaliwali

• Nawaliwali intermolecular ikaika ma waena o PTFE molekala kaulahao

• Hoʻokumu ʻia i nā ʻaoʻao diffusion nui loko o nā kikowaena amorphous

• Hāʻawi ke kiʻi ʻoniʻoni PTFE paʻa maʻemaʻe i ka WVTR pae waena wale nō - haʻahaʻa loa i ka PVDC a i ʻole EVOH

• ʻAʻole ʻo PTFE kahi mea pale kūpono

ʻIke nui: ʻO ka PTFE Intrinsic kahi pale kūpono, ʻaʻole kahi mea kūʻokoʻa. ʻO ka hana lipine maʻamau e hilinaʻi nui ʻia i nā hemahema o ka uhi ʻana.

ʻO nā hemahema o ka uhi koʻikoʻi - Micropores, Microcracks, a me Fiber Wicking

ʻO kēia ke kumu nui e hoʻokele ana i ka hana pale pono. Hana ʻia ka hapa nui o nā lipine adhesive PTFE ma o ka impregnation a i ʻole ka uhi ʻana o ka dispersion PTFE a ukali ʻia e ka sintering, i ka wā e hana koke ʻia ai nā hemahema.

ʻO ka hopena kūpono: ʻO ka WVTR holoʻokoʻa o ka lipine PTFE i hoʻopau ʻia e hoʻokele nui ʻia e ka nui kīnā , ʻaʻole ka waiwai o ka resin PTFE nui.

Hāʻawi ʻo Aokai PTFE i nā lipine adhesive PTFE me ka nui o ka uhi ʻana. No nā noi e koi ana i ka WVTR haʻahaʻa (<15 g/m²·lā), paipai mākou i kā mākou papa i uhi ʻia i ka multilayer, e hoʻohana ana i ʻekolu impregnation pass no ka uhi ʻana i nā pinholes a hoʻemi i ka microcrack density.

ʻO ka mānoanoa o ka uhi a me ka hopena Labyrinth - Nā hoʻolālā e hōʻemi i ka WVTR

ʻO ka hoʻonui ʻia ʻana o ka mānoanoa o ka uhi ʻana e hoʻolōʻihi i ke ala komo ʻana i ka mahu akā ʻaʻole hiki ke uhi wale i nā hemahema o ka hale . ʻO nā hāʻina hoʻomaikaʻi maikaʻi aʻe i helu ʻia ma lalo nei:

E akahele me nā mea hoʻopiha: ʻO ka hoʻouka ʻana i ka hoʻopiha piha e hoʻopilikia i ka maʻalahi a me ka waiwai paʻa ʻole o nā huahana i hoʻopau ʻia. Pono ke kaulike.

Ke kūlana o ka ʻili - Hydrophobic akā ʻaʻole hoʻoholo

ʻO ka hydrophobic PTFE coating he kiʻekiʻe kiʻekiʻe o ka pilina pili wai (maʻamau 110-120 °), kaohi ʻana i ka hoʻokumu ʻia ʻana o ka wai kiʻiʻoniʻoni ma luna o ka ʻili a me ka hoʻohaʻahaʻa ʻole ʻana i ka ikaika o ke komo ʻana o ka mahu.

Eia nō naʻe: ʻAʻole hiki i kēia pōmaikaʻi o ka ʻili ke hoʻopau i ka pale maikaʻi ʻole i hoʻokumu ʻia e nā kīnā o loko. Inā loaʻa nā micropores a i ʻole nā ​​māwae, e laha mau ka mahu wai me ka nānā ʻole i ka hydrophobicity.

Hōʻuluʻulu manaʻo - Pili ʻia ka hana ʻo Barrier i ka Mana Defect

ʻO ka hopena hope loa: Ke hoʻohana ʻia ka lipine adhesive PTFE no ka hoʻopaʻa ʻana i ka haʻahaʻa haʻahaʻa, ʻo nā hemahema o ka uhi ʻana i ke kaʻina hana (micropores, māwae, fiber wicking) ʻo ia ka nāwaliwali nui o kona hiki ke pale. Hoʻomaopopo ʻia ka sila hilinaʻi ma o ka hoʻomaʻamaʻa densification me ka uhi ʻana o ka multi-layer a me ka hoʻololi hoʻopihapiha . Hoʻohana ʻia ka tape composite PTFE ma ke ʻano he pale multi-functional hilinaʻi ma lalo o nā kūlana koʻikoʻi e koi ana i ke kūpaʻa wela kiʻekiʻe, ke kū ʻana o ka corrosion, ke kūpaʻa haʻahaʻa, a me ka hoʻokuʻu ʻole ʻana i ka hana i ka manawa like - akā ʻaʻole ma ke ʻano he pale kiʻekiʻe kiʻekiʻe e like me ka foil metala a i ʻole PVDC.

I ka hōʻuluʻulu manaʻo , ʻaʻole i hoʻoholo ʻia ka waiwai o ka wai mahu o PTFE adhesive tape e ka hydrophobicity wale nō o PTFE. ʻO ka PTFE Intrinsic kahi pale kūpono (WVTR 5-10 g / m²·lā no ke kiʻiʻoniʻoni kīnā ʻole). Eia naʻe, pilikia nā lipine kūpono i nā micropores, microcracks (mai ka hoʻonui ʻana i ka wela me ka fiberglass), a me ka fiber wicking - hoʻonui i ka WVTR i 50-200 g/m²·lā.

No ka loaʻa ʻana o ka WVTR haʻahaʻa (<15 g/m²·lā), e kuhikuhi i ka uhi ʻana i nā ʻāpana he nui (3+ impregnation pass) a/a i ʻole ka hoʻololi hoʻopiha piha (10-20 wt% mica a i ʻole nā ​​lau aniani). ʻO ka hopena labyrinth mai nā mea hoʻopiha e hoʻoikaika i ka mahu wai e hele i nā ala wili, e hōʻemi loa i ka lawe ʻana. Eia nō naʻe, hiki i ka hoʻouka hoʻopihapiha kiʻekiʻe ke hōʻemi i ka maʻalahi a me ka hana non-stick - pono ke kaulike.

Pono i kahi lipine hoʻopili haʻahaʻa WVTR PTFE no ka hoʻopaʻa ʻana i ka moisture-sensitive sila? Hāʻawi ʻo Aokai PTFE i nā helu he nui i uhi ʻia a hoʻopiha piha ʻia me nā ʻikepili hōʻike WVTR i kākau ʻia. E hoʻokaʻaʻike mai iā mākou me kāu WVTR makemake, ka mahana hana, a me nā pono maʻalahi.

Hāʻawi ʻia e Jiangsu Aokai New Materials Technology Co., Ltd.

Inā makemake ʻoe i nā palena ʻenehana kikoʻī, alakaʻi noiʻi, a me nā hopena maʻamau no kā mākou waihona huahana piha me ka PTFE kiʻekiʻe-mehana lole, PTFE kiʻekiʻe-mehana adhesive tape, PTFE mesh conveyor kāʻei, seamless fuser kāʻei, hoʻokahi ʻaoʻao PTFE lole, kiʻekiʻe-wela kūʻokoʻa conveyor kāʻei a me ka lole fiberglass pale wela , e ʻoluʻolu e kelepona mai iā mākou:

• Mr. Guo: +86 18944819998

• Mr. Liu: +86 13705266308

Ke kākoʻo nei i ka manaʻo ʻoihana o ka ʻoihana a me ka kūpaʻa, hāʻawi mākou iā mākou iho i ka hāʻawi ʻana i nā hoʻonā hoʻokahi hoʻokahi a me ka lawelawe mea kūʻai aku noʻonoʻo.