Mkpuchi PTFE na-ezighi ezi na-eduga na streaks, pinholes, yellowing, ma ọ bụ arụ ọrụ na-adịghị agbanwe agbanwe. Maka ngwa dị ka eriri mkpuchi okpomọkụ, eriri ebufe na ihe ntọhapụ, otu mkpuchi mkpuchi na-emetụta àgwà ngwaahịa na ndụ ọrụ ozugbo.
Kedu ihe na-akpata mkpuchi na-enweghị isi? Azịza ya gbasara akụkụ anọ: nhazi mkpuchi, mkpuchi & usoro sintering, àgwà mkpụrụ, na gburugburu mmepụta ihe.
Aokai PTFE emeziwanye ihe ndị a n'ofe puku kwuru puku mmepụta. Isiokwu a na-akọwa ihe ọ bụla na otu esi ejikwa ha maka ịdị elu dị elu, otu PTFE akwa akwa.
Mkpuchi mkpuchi - Ihe kpatara ịdị n'otu
Usoro nhazi
Ezigbo oke / achọrọ
Ihe Mere O Ji Dị Mkpa
Nha urughuru PTFE
0.15 - 0.35 μm (D50)
Nkesa sara mbara karịrị akarị na-emebi ntinye mkpụrụ osisi na ịrụpụta ihe nkiri
Ihe siri ike dị oke elu na-ebute mbelata na-enweghị isi n'oge ihicha
Mgbasa
Enweghị agglomeration
Ogbenye dispersibility na-eduga na mpaghara urughuru ụyọkọ na mkpuchi ntụpọ
Ọdịnaya ndochi (dịka ọmụmaatụ, seramiiki ntụ ntụ)
Na-agbanwe agbanwe, gbasasịa nke ọma
Na-agbanwe ọnọdụ elu microscopic; ihe ndochi na-ekwekọghị ekwekọ na-akpata mgbanwe nha
Bara uru n'ọnụ: Na-anwale ọ bụla ogbe nke PTFE emulsion maka urughuru size nkesa na viscosity tupu mmepụta. Mgbanwe 10% na viscosity nwere ike ịgbanwe mkpuchi mkpuchi site na 5-8%.
Mmekọrịta dị n'etiti PTFE urughuru size na mkpuchi uniformity na-emekarị elelị. Emulsions na D50 n'okpuru 0.12 μm na-agba ọsọ ngwa ngwa, na-eme ka ọkpụkpụ bead guzobe (nkpuchi dị oke n'akụkụ) n'oge ihicha. Emulsions nwere D50 n'elu 0.4 μm na-abanye n'ime fiberglass na-adịghị mma, na-ebute porosity elu na mkpuchi eriri na-adịghị ike. Ogologo dị mma (0.18-0.22 μm) na-enye ma ntinye dị mma na nhazi ihe nkiri dị mma. Ihe ọzọ dị oke mkpa bụ ọdịnaya surfactant - oke surfactant na-akpata ụfụfụ n'oge mkpuchi mgbụsị akwụkwọ, na-emepụta afụ ikuku nke na-agbawa ma na-ahapụ oghere. Obere surfactant na-eduga na urughuru agglomeration na 'anya azụ' na mkpuchi ikpeazụ. Maka ịdị n'otu na-agbanwe agbanwe, rụọ ọrụ na otu onye na-eweta emulsion wee rịọ asambodo batch na-egosi pasentị D50, D90 na surfactant.
Aokai PTFE na-eji naanị PTFE emulsion na nkesa nha nha nke a na-achịkwa nke ọma (D50 0.18-0.22 μm, D90 <0.35 μm). Nke a na-eme ka nbanye na-aga n'ihu na njedebe dị larịị n'ofe akwa ọ bụla.
Usoro mkpuchi & Sintering - Nkebi siri ike maka ịdị n'otu
1. Usoro mkpuchi mkpuchi
Usoro
Ụkpụrụ
Ọkwa ịdị n'otu
Uru
Cons
Mkpuchi mkpuchi
Mkpụrụ na-agafe site na emulsion bat
Na-agafeghị oke
Ezigbo n'ozuzu wetting, eriri encapsulation
Ogologo ogologo ogologo, akụkụ gbara ọkpụrụkpụ, etiti dị gịrịgịrị
Mkpuchi agụba
Nkenke dọkịta agụba mita mkpuchi
Ọkachamara - otu kachasị elu
Ihe mkpuchi dị nro, nke siri ike, enweghị pinholes/streaks
Na-emetụ n'ahụ na substrate flatness
Mgbasa mkpuchi
Ngwa ịgbasa atomized
Ogbenye
Ọ dị mma maka ọdịdị oge niile
Parameter-enwe mmetụta (anya, nrụgide), adịghị mma maka mmepụta oke
Omume kachasị mma na ụlọ ọrụ: Usoro ejikọtara - mkpuchi mwụda + mkpuchi agụba - anabatara nke ọma. Nke a na-agwakọta elu n'ozuzu wetting nke itinye mkpuchi na elu pụtara ìhè flatness nke agụba mkpuchi, itule eriri encapsulation ike na elu nkenke.
2. Ọnọdụ ihicha & Sintering
Oke
Mmetụta na Uniformity
Ọnụọgụ ihicha
ihicha nke na-ekwekọghị ekwekọ (oke ngwa ngwa ma ọ bụ nwayọ) na-ebute ọkpụrụkpụ ihe nkiri na-ekwekọghị ekwekọ, mgbawa, ma ọ bụ akara mbelata.
Okpomọkụ na-ekpo ọkụ
PTFE ga-agbaze n'ime ihe nkiri na-aga n'ihu na 360-420 ° C. Ọnọdụ okpomọkụ na-adaghị adaba na-eduga na mgbaze na ọkwa na-agbanwe agbanwe
Ogologo oge nke mmechi
Oge ezughi oke → nhazi ihe nkiri ezughị ezu; oke oge → odo ma ọ bụ mmebi okpomọkụ
Ịdị n'otu okpomọkụ n'ofe oven
Ọkụ na-ekpo ọkụ/oyi dị n'ime mpaghara na-ebute mgbanwe agba (dịka ọmụmaatụ, odo na mpaghara ụfọdụ)
Usoro ntinye + agụba jikọtara ọnụ bụ ọkọlọtọ ụlọ ọrụ maka akwa PTFE dị elu dị elu. Nke a bụ ihe kpatara ya: mkpuchi mkpuchi naanị na-emepụta 'mmetụta meniscus' - mkpuchi ahụ dị oke n'akụkụ ya ma dị gịrịgịrị n'etiti n'ihi esemokwu elu nke emulsion ka ákwà na-apụ na bat ahụ. Mgbanwe ihu na etiti a nwere ike ịbụ 15-20% nke oke ọkpụrụkpụ. Ihe mkpuchi agụba naanị, mgbe ọ na-emepụta elu dị larịị, na-agbasi mbọ ike ịbanye - PTFE na-anọ n'elu n'enweghị ihe mkpuchi fiberglass zuru oke, na-eduga na nguzogide abrasion na-adịghị mma. Usoro ejikọtara: tinye maka ntinye, wee gafee ozugbo n'okpuru akwụkwọ dọkịta iji wepụ oke na ọkwa elu. Maka nsonaazụ kacha mma, a ga-edozi oghere agụba na 120-150% nke mkpuchi mkpuchi ikpeazụ achọrọ, na-aza ajụjụ maka nkwụsịtụ n'oge ihicha. Ịkọwapụta okpomoku n'ofe oven dị oke egwu - gradient 10 Celsius n'ofe obosara nwere ike ime ka streaks na-ahụ anya.
Substrate Quality & Pre-treatment – Ntọala nke ịdị n'otu
Ihe kpatara ya
Mmetụta dị na Uniformity mkpuchi mkpuchi
Ụdị akpa
Akpa dị larịị: udidi siri ike, nkwụsi ike akụkụ dị mma, enweghị ike ime. Satin na-akpa ákwà: usoro rụrụ arụ, ntinye dị elu, nke dị elu. Twill: etiti. Mkpa njupụta dị iche iche na-emetụta ntinye emulsion ozugbo.
Ihe na-emetọ ihu
Paraffin fọdụrụnụ, mmanụ aṅụ site na ịbịaru/ịkwa akwa na-egbochi ọbụna PTFE ịgbasa ma na-akpata ntụpọ mkpuchi.
Ịdị njọ nke elu
Ọgba aghara na-ekwekọghị ekwekọ na-akpata nchịkọta mkpuchi na-adịghị mma (oke n'ebe ndị siri ike, dị gịrịgịrị na ebe dị nro)
Nkwanye: N'ihi na elu-uniformity ngwa (eg, okpomọkụ akara teepu), na-eji satin weave fiberglass ákwà na okpomọkụ ihicha wepụ niile organic residues tupu PTFE mkpuchi.
Mpaghara mmepụta - Nkwenye maka ịdị n'otu dị elu
Ihe kpatara gburugburu ebe obibi
Ọnọdụ kacha mma
Ntak
Okpomọkụ
20-25 Celsius C
Okpomọkụ na-erughị eru na-ebelata ịrụ ọrụ ọkwa mkpuchi mkpuchi
Iru mmiri dị ala
<60% (ezigbo: 40-55%)
Nnukwu iru mmiri na-eme ka mmiri dị na emulsion, na-eduga na pinholes
Ịdị ọcha ikuku
Uzuzu adịghị (atụ aro nzacha HEPA)
Uzuzu ikuku na-etinye na mkpuchi, na-eme ntụpọ n'elu
Ihe ndetu bara uru: N'oge oge mmiri ozuzo ma ọ bụ ụbọchị iru mmiri dị elu, tụlee ịgbasa dehumidifier n'ime ụlọ mkpuchi. Iru mmiri dị n'elu 70% na-abawanye ntụpọ pinhole.
Nchịkọta - Ijikọta ya niile
Ihe kpatara ya
Ebe njikwa kacha mkpa
Ezigbo uru/oke
Nhazi
Nkesa nha urughuru
D50 0.18-0.22 μm, D90 <0.35 μm
Nhazi
Ọdịnaya siri ike
60±2%
Usoro
Usoro mkpuchi
Tinye + agụba jikọtara
Usoro
Ịdị n'otu ọnọdụ okpomọkụ
± 5°C gafee oven obosara
Mkpụrụ
Ụdị akpa
Satin na-akpa maka otu ngwa dị mkpa
Mkpụrụ
Tupu ọgwụgwọ
Okpomọkụ kpochara, enweghị ihe fọdụrụ
gburugburu
Okpomọkụ & iru mmiri
20-25°C, RH <60%
Na nchịkọta , mkpuchi uniformity nke PTFE elu-okpomọkụ ákwà na-adabere anọ interconnected ihe. Ihe mkpuchi mkpuchi (nha nha, viscosity, ọdịnaya siri ike) bụ ihe kpatara ya. Usoro mkpuchi na sintering - karịsịa iji ntinye + agụba jikọtara - bụ ọkwa dị mkpa. Substrate àgwà na tupu ọgwụgwọ na-enye ntọala. Ebe mmepụta ihe na-ekwe nkwa ịdịgidesi ike.
Maka ngwa ndị na-achọ ịdị n'otu dị elu (dịka ọmụmaatụ, teepu mkpuchi okpomọkụ, ihe ntọhapụ maka ngwaahịa nnyapade), usoro ntinye + agụba jikọtara ọnụ bụ ọkọlọtọ ọla edo nke ụlọ ọrụ. Nyochaa oke nke ọ bụla mgbe niile, debe ọnọdụ gburugburu ebe obibi kwụsie ike, ma nwalee emulsions na-abata maka nkesa nha nha.
Chọrọ enyemaka ọbọ na-agbanwe agbanwe mkpuchi uniformity gị PTFE ákwà? Aokai PTFE na-enye ọrụ mkpuchi omenala yana nyocha usoro. Kpọtụrụ anyị na nkọwapụta ebumnuche gị yana olu mmepụta gị.
