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Home » Nūhou » Ka lole i uhi ʻia ʻo PTFE » Nā hoʻololi i ka PTFE Crystalline Structure i ka wā o ka Sintering o ka PTFE kiʻekiʻe-mehana lole.

Hoʻololi i ka PTFE Crystalline Structure I ka wā o ka Sintering o ka PTFE High-Temperature Cloth

Nānā: 0     Mea kākau: Luna Hoʻoponopono Pūnaewele Manawa Hoʻopuka: 2026-07-07 Kumu: Paena

Ninau

ʻO Jiangsu Aokai New Materials, he mea hana ʻoihana o ka PTFE kiʻekiʻe-mehana lole, elaborates i ka evolution o ka PTFE crystalline hana i loko o ke kaʻina sintering o PTFE kiʻekiʻe-mehana lole.

I. Ka luku ana i ke Kino Crystalline Kumu

1. PTFE crystalline morphology ma mua o ka sintering

Ma mua o ka sintering, aia ka PTFE e like me nā ʻāpana emulsion i hoʻopili ʻia i ka lole fiberglass. Loaʻa i kēlā me kēia ʻāpana nā lamellae i pelu ʻia me nā microcrystals liʻiliʻi i hoʻonohonoho pono ʻia.

PTFE_Fabric_Replacement_Guide.png

2. ʻO ka hoʻololi ʻana i ka hale i ka wā hoʻomehana no ka sintering

Ke piʻi aʻe ka mahana ma luna o ka helu heheʻe (~ 327°C), heheʻe loa nā kristal a pau. Wehe a wehe ʻia nā kaulahao molecular pelu, a lilo i mea hehee amorphous. Nalo nā palena ʻāpana kumu i ka hui ʻana o nā ʻāpana i loko o kahi māhele hoʻoheheʻe mau, e wāwahi loa i ka ʻano crystalline granular mua.

II. Hoʻolāʻau hou i ka wā hoʻoluʻu

1. Hoʻokumu ʻana i nā hale spherulitic

Ma ka hooluolu ana mai ka moku i hooheheeia, e ho'iho'i hou 'ia ka PTFE e hana i spherulites i haku 'ia me ka radially oriented folded-chain lamellae e hohola ana iwaho mai ke kikowaena nucleation sites. Hoʻokumu kēia mau spherulites interpenetrating i kahi matrix crystalline mau, e hoʻololi ana i ke ʻano o nā mea i hoʻopili ʻia.

2. Hoʻololi i ka crystallinity hope

Hōʻike ʻo PTFE i nā kaulahao molekala paʻa mau loa, e hāʻawi ana i nā helu crystallization wikiwiki loa ma lalo o ka hoʻoilo wikiwiki ʻana. ʻO ka crystallinity hope loa mai 50% a i 70%, haʻahaʻa haʻahaʻa ma mua o nā ʻāpana emulsion mua.

III. Hoʻololi o nā ʻāpana Crystalline a me nā ʻano Crystal

1. Paʻa ʻana i ka pae aniani paʻa

Ma hope o ka hoʻoluʻu ʻana i ka lumi wela, mālama ʻo PTFE i kahi ʻōnaehana aniani hexagonal paʻa (kahi ʻāpana hexagonal lumi-mahana), e like me kona ʻano aniani mua. Loaʻa nā hoʻololi ʻana a pau i ka nui aniani, ka hemolele a me ka morphology ma mua o ka pae aniani hope loa.

PTFE_Fabric_Chemical_Pipeline_Lining.png

2. Ka hopena o ka hoʻoilo ʻana i ka maikaʻi o ke aniani

· ʻO ka hoʻoluʻu lohi e hāʻawi i ka crystallinity kiʻekiʻe, ʻoi aku ka nui o nā spherulites a me ka mānoanoa, ʻoi aku ka maikaʻi o ka wehewehe ʻana i nā lamellae, ka hopena i nā huahana me ka paʻakikī kiʻekiʻe.

· Hoʻopiʻi wikiwiki ke alakaʻi i ka crystallinity haʻahaʻa haʻahaʻa, ʻoi aku ka maikaʻi, nā spherulites maikaʻi ʻole, a me ka hoʻomaikaʻi ʻana i ka maʻalahi a me ka semi-transparency o ka mea i hoʻopau ʻia. He mea maʻamau ka hoʻoluʻu lohi no ka lole wela kiʻekiʻe PTFE e hoʻokō i nā koi ikaika mechanical.

IV. ʻO ka hopena o ka Crystallization Interfacial ma ka Fiberglass a me ke ʻano nui

1. Transcrystallization hanana

Ke hoʻoheheʻe ʻia ʻo PTFE ma luna o ka fiberglass surfaces, ʻo nā kahua nucleation nui ma ka ʻili fiber e hoʻoulu i ka transcrystallization: kahi kolamu kolamu e ulu kū pololei ana i ke axis fiber, ʻokoʻa loa mai ka morphology spherulite i loko o ka uhi nui.

2. Ka hoʻolālā gradient mai ke kikowaena fiber a hiki i ka uhi nui

PTFE_Fabric_Usage.png

Ma lalo o ka mana o ka fiberglass, ua hoʻololi ʻia ka PTFE crystalline structure: kahi transcrystalline layer e pili ana i nā fibers e neʻe mālie i nā hale spherulitic i loko o ka matrix uhi i loko.

3. Hoʻoholo i ka hopena o ka hoʻololi ʻana i ka hana ma ka hana lole PTFE

Hoʻololi ʻo Sintering i nā kristal PTFE i hoʻopili ʻia: ua hoʻoheheʻe ʻia lākou a me ka hoʻohaʻahaʻa ʻana, a laila hoʻihoʻi hou i nā spherulites mau loa (me nā papa transcrystalline interfacial). Hoʻololi kēia i nā ʻāpana pauka i hoʻopaʻa ʻia i loko o kahi kiʻiʻoniʻoni paʻa mau, ʻo ia ka mea koʻikoʻi koʻikoʻi no ka uhi ʻana e hāʻawi i ka hana holoʻokoʻa me ka pale ʻana i ka wela, ka haʻahaʻa haʻahaʻa, ka waiwai non-stick a me ke kūpaʻa kino kino.

Hāʻawi ʻia ka ʻike loea ma luna e Jiangsu Aokai New Materials Technology Co., Ltd.

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