Ebikolwa by’obunnyogovu bw’obutonde ku PTFE Emulsion Impregnation

Mu nkola yennyini ey’okufulumya olugoye olw’ebbugumu eringi olwa PTFE olwa Jiangsu Aokai New Materials, obunnyogovu bw’obutonde butera okufugibwa mu bbanga erigere erya 40%–60% RH , nga bugatta wamu n’okulungamya ebbugumu. Omuwendo gw’okufuumuuka gutereezebwa okuba wansi katono okusinga omutindo gw’okutambuza emisuwa gy’amazzi mu emulsion munda mu mutimbagano gw’emisuwa, okukakasa okuyingira mu bujjuvu n’okutereeza emulsion ate nga kituuka ku firimu ezitaliimu buzibu, ezirimu PTFE sintered ennyo.

Enkola enkulu ey’obunnyogovu bw’obutonde ku kufukirira kwa PTFE emulsion eri mu bbalansi ey’amaanyi wakati w’omutindo gw’okufuumuuka kw’amazzi n’obutebenkevu bwa emulsion. PTFE emulsion etera okuba amazzi agatali ga Newtonian agakolebwa obutundutundu bwa PTFE resin (dispersed phase), surfactants, stabilizers, n’amazzi (continuous phase). Nga ekigerageranyo ky’obutonde, obunnyogovu butereeza entambula y’okufuumuuka (volatilization kinetics) y’ekizimbulukusa (amazzi), nga bukola ebikolwa ebikulu nga bino wammanga:

1. Ebikosa Ebikulu ku Nkola y’Okufukirira

Omutendera gw’okufukirira gwetaaga emulsion okuyingira obulungi mu butuli oba ebituli by’obuwuzi eby’ekisengejjero (okugeza, olugoye lw’obuwuzi bw’endabirwamu, akatimba k’ekyuma).

Embeera y'obunnyogovu obutono : Amazzi gafuumuuka mangu nnyo, ekivaako emulsion 'surface-dry' mangu ku substrate. Kino kyongera nnyo ku buzito obulabika obwa emulsion ku interface, okulemesa okuyingira kw’emisuwa gy’obutundutundu bwa resin mu substrate enzito era ne kivaamu 'insuficient impregnation' — kwe kugamba, ensawo z’empewo ezisigadde munda mu substrate. Mu kiseera kino, okufuumuuka okw’amangu kuggyawo ebbugumu lingi, ekiyinza okuleeta okukka kw’ebbugumu mu kitundu okw’amangu, okutabangula emulsion mu ngeri y’obugumu n’okuleeta okutonnya kw’ekirungo ekikola ku ttaka, ekivaako 'ekikuta ky’emicungwa' oba obuwanvu obutali bwenkanya mu layeri efukiddwa.

Embeera y’obunnyogovu obw’amaanyi : Okufuumuuka kw’amazzi kuziyizibwa, era emulsion esigala mu mbeera y’obunnyogovu ey’obuzito obutono ku substrate okumala ebbanga erisukkiridde. Ku substrates eziyimiridde oba eziserengese, okugwa kwangu okubaawo wansi w’amaanyi ag’ekisikirize; ku substrates ezirimu amazzi amangi, obunnyogovu obungi buyinza okulemesa okufuluma kwa ggaasi munda mu substrate, okukola microbubbles ezikula ne zifuuka ebikyamu bya pinhole mu kiseera ky’okusiba oluvannyuma.

2. Ebikosa Ebikulu ku Mutindo gw’Okukola Firimu Esembayo

Okutondebwa kwa firimu ya PTFE okutwalira awamu kuzingiramu emitendera ebiri: okukala (okuggyawo amazzi) n’okusiba ku bbugumu eringi (okusaanuusa obutundutundu). Obunnyogovu businga kukosa ensengekera y'omubiri ogwa kiragala mu kiseera ky'okukala, nga 'sikira' mu firimu esembayo eya sintered.

Enjatika n’okunyigirizibwa okw’omunda : Okutondebwa kwa firimu y’obutundutundu bwa PTFE resin kwesigamye ku puleesa y’emisuwa mu kiseera ky’okufuumuuka kw’amazzi okunyigiriza obutundutundu mu layeri enzito epakibwa. Obunnyogovu obutono ennyo buleeta okweyongera okw’amaanyi mu puleesa y’emisuwa (capillary pressure gradient) n’okukendeera okw’amangu ennyo mu kukala, ekivaamu okunyigirizibwa okw’omunda okw’okusika okunene munda mu mubiri gwa kiragala. Okuva PTFE bwe yabula obusobozi obw’okwewonya nga tennasindika, situleesi ng’eyo ereeta butereevu enjatika entonotono oba enjatika ennene mu mubiri ogwa kiragala. Enjatika zino teziyinza kuggyibwawo oluvannyuma lw’okusiba, ekivaamu okukulukuta kwa firimu oba okukendeeza ku maanyi g’ebyuma.

Okusenguka kw’ebirungo ebikola ku ttaka n’ebisigadde : Ebirungo ebikola ku ttaka (nga ebirala mu kifo kya perfluorooctanoic acid) ebiri mu PTFE emulsions ez’ettunzi bisenguka n’okufuumuuka kw’amazzi mu kiseera ky’okukala. Embeera y'obunnyogovu obw'amaanyi egaziya eddirisa ly'okukala, ne kisobozesa obudde obumala ebirungo ebikola ku ttaka okukuŋŋaanyizibwa ku ngulu, ne bikola 'amafuta ag'okungulu agaseeneekerevu' oba olususu olukalu. Singa oluwuzi luno teruvunda mu bujjuvu oba okufuumuuka mu mutendera gw’okusiba nga tegunnatandika, lujja kuba lwa kaboni era lusibirwe munda mu firimu, kireete okufuuka okwa kyenvu, okukendeeza ku density, n’okunafuwa ennyo okunywerera wakati wa PTFE ne substrate (okukwatagana okubi okw’omu kisenge olw’okwawula obucaafu).

Film density and porosity : Firimu ya PTFE ennungi erina okuba nga temuli pinhole ate nga ya dense. Okufuga obunnyogovu mu ngeri etali ntuufu ekivaako obunnyogovu obusigaddewo kya bulabe nnyo. Wansi w’obunnyogovu obw’amaanyi, singa amazzi tegaggyibwawo ddala mu kiseera ky’omutendera gw’okubugumya n’okukala, obunnyogovu obusigaddewo bufuumuuka mu kaseera ako mu kiseera ky’okufuumuula okuddirira (approx. 327–400°C) n’okugaziwa kw’obunene obw’amaanyi, ne kivaamu ebituli ebifuuwa oba ebizimba ebiri wakati mu firimu esaanuuse ekitundu. Okwawukana ku ekyo, wansi w’obunnyogovu obutono ennyo, okukala amangu kungulu kukola olususu olusibye oluziyiza okufuumuuka kw’amazzi munda, era ne kireeta ebizimba oba okukutuka mu kiseera ky’okusiba olw’okukuŋŋaanyizibwa kwa puleesa y’omukka.

Mu nkola, enkola y’obunnyogovu bw’obutonde ku nkola ya PTFE emulsion mu bukulu kwe kuyingira mu kinetics y’okufuumuuka kw’amazzi:

·  Obunnyogovu obutono (obukalu obuyitiridde)  butera okuleeta: okuyingira obubi, okuzibikira okutereeza (ebituli ebikendeera), enjatika ezikala, n’okusaasaana okutali kwa bwenkanya kw’ebisigadde ebikola ku ttaka.

·  Obunnyogovu obuyitiridde (obunnyogovu obuyitiridde)  butera okuvaako: okugwa, okweyongera kw’ebinnya bya ppini, okulengejja kw’ekirungo ekikola ku ttaka ekisusse, okuvaamu ebizimba oluvannyuma lw’okusiba, n’okukendeeza ku kwekwata.

Amawulire ago waggulu gaweereddwa kkampuni ya Jiangsu Aokai New Materials Technology Co., Ltd.

Ku parameters enzijuvu, scenarios okukozesa n'okugonjoola customized of our full product range, omuli PTFE high-ebbugumu olugoye, PTFE high-ebbugumu tape, PTFE high-ebbugumu akatimba omusipi, seamless laminating emisipi, oludda olumu PTFE olugoye, high-ebbugumu okugumira conveyor belts, ebbugumu eringi okugumira glass fiber fabric, n'ebirala,. tukusaba otuukirire:

·  Ennamba y’essimu ey’obuweereza: Mwami Guo 18944819998

·  Mwami Liu 13705266308

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