Njira yozungulira yonyamula
1.Kupota konyowa2.Kuzungulira kowuma
3.Sungunulani njira yozungulira
Kupota konyowaKuzungulira konyowa kwa PTFE nthawi zambiri mu viscose kapena polyvinyl mowa (PVA) monga chonyamulira, kusakaniza ndi PTFE ufa kapena emulsion dispersion, ndi kuwonjezera pang'ono boric acid, kupanga kupota njira , kuchita chonyowa kupota, kupota mutu anaika mu sodium sulfate ndi ammonium. sulphate coagulation kusamba, dope kuchokera nozzle mu coagulation kusamba olimba mu CHIKWANGWANI, CHIKWANGWANI pambuyo leaching wodzigudubuza madzi leaching, kachiwiri pambuyo wodzigudubuza mafuta ndi kuyanika wodzigudubuza motero, mu 380 ~ 400 ℃ kutentha sintering, chotsani PVA chonyamulira carbide, kutambasula kupanga PTFE CHIKWANGWANI pansi pa 350 ℃.Njira iyi ya kupota amathera ndondomeko wovuta, mkulu processing mtengo ndi mowa mphamvu ndi nthawi yambiri.Guo Yu-hai ndi ena anatulukira njira yofulumira kwambiri yokonzekera PTFE CHIKWANGWANI.Njirayi idzakhala yoyamba yosakanikirana kusakaniza otsika wachibale maselo misa kosakhazikika organic zosungunulira ndi madzi, mu chikhalidwe chipwirikiti ndi PVA, pitirizani akuyambitsa mpaka kwathunthu kusungunuka, osakaniza PVA madzi njira.Ndiye yankho la madzi a PVA ndi persulfate, PTFE kubalalitsidwa kusakaniza kufanana, dope.Ndiye borate kapena boric asidi kusungunuka m'madzi, ndi zamchere pH kusintha monga zamchere, osakaniza coagulation kusamba.Pomaliza kutengera chonyowa kupota zida za ochiritsira , ndi kupota madzimadzi potengera ku nozzle, kudzera metering mpope metering, mwachindunji kupota mu coagulation kusamba, ndiye kuyanika, sintering ndi Tambasula, ndi PTFE CHIKWANGWANI wapangidwa.
Kuzungulira kowuma
Njira iyi ndi PTFE gel osakaniza anazindikira ndi youma kupota.PTFE choyamba anaikira kubalalitsidwa ndi PVA blended, kuwonjezera gel osakaniza zowongolera boric acid kapena Borate mchere ndi alkalis kusintha pH kuti zamchere, whisking kuti mwadzidzidzi kuwonjezeka mamasukidwe akayendedwe ndi gel osakaniza mapangidwe, ndi kupota njira.Ndiyeno ziume iwo ntchito ochiritsira kupota zida, mpweya kuthamanga kapena wononga kupota madzi kwa kupota mutu, anayeza mu metering mapampu, youma kupota, ndiyeno zouma, okonzeka chisakanizo cha PTFE ndi PVA CHIKWANGWANI.Pomaliza ntchito ochiritsira sintering ndi kutambasula zipangizo, adzakhala wosanganiza sintering kuchotsa PVA CHIKWANGWANI, potsiriza pambuyo anatambasula ndondomeko kutambasula, PTFE CHIKWANGWANI kukonzekera.
Chonyamulira kupota njira ndi okhwima njira kukonzekera PTFE CHIKWANGWANI, ndipo wakhala mmodzi wa makampani ochepa kuzindikira mafakitale.Pakati pawo, Japan toray kampani AMAPHUNZITSA misa kachigawo 60%, pafupifupi tinthu kukula anali 0. 3 microns wa PTFE, ndi misa gawo la 2% sodium alginic asidi amadzimadzi njira ya emulsoid wosanganiza kupota, CHIKWANGWANI ndi coagulation, kusamba kachiwiri pambuyo. kutsuka, kuyanika, ndi pansi pa 380 ℃ kutentha kutambasula, kuchotsa alginic asidi sodium, kupeza PTFE CHIKWANGWANI, monofilament wake liniya kachulukidwe 0. 67 dtex ndi fracture mphamvu l.25 cN/dtex, elongation pa yopuma mpaka 59%, njira kupota dope spinnability bwino kuposa ndi viscose monga chonyamulira PTFE dope spinnability.Showa mafakitale, kugwiritsa ntchito kagawo kakang'ono ka 114 ka 60% PT - 100 FE omwazika emulsion ndi mapadi a gawo lalikulu la 8.9% viscose spinning solution kupota, pambuyo pa kulimba kwa ulusi wa nascent ndi madzi, kufinya madzi, ndi 0. 05 mol / L Na0H processing, ndi CHIKWANGWANI kutentha mankhwala pansi 280 ℃ ndi otentha anatambasula pansi 320 ℃, chomaliza kutentha mankhwala 72 h pansi 320 ℃, CHIKWANGWANI kusweka mphamvu kwa 1. 16 cN/dtex elongation pa yopuma anali 16.1%.Kuphatikiza apo, chomera chowonetsera ku Beijing chidzakhala 60% gawo lalikulu la PTFE emulsion ndi 10% gawo lalikulu la yankho la PVA mu gawo la 1: 1.5 njira yozungulira yozungulira, itatha kulimba kwa ulusi ndi acetal, kutsuka, kuyanika, kupukuta ndi kutambasula mpaka PTFE fiber system.
Kudula filimu kugawanika njira Kudula filimu mng'alu njira kumayambiriro 1970 ndi Austria Lenzing kampani chitukuko ndi mafakitale, pokonza PTFE CHIKWANGWANI, ayenera kupanga PTFE ufa sinter cylindrical PTFE parison, kudula ndi makulidwe ena a filimuyo, ndi ndiye ndi serrated chida ogaŵikana silika, pamwamba pa malo osungunuka (327 ℃) sintering, ndiye kudzera kutambasula ndi kukathera ndi PTFE CHIKWANGWANI kutentha mankhwala.Njirayi imatha kutenga ulusi wokhala ndi microporous, komanso mphamvu yayikulu.Multifilament itha kugwiritsidwa ntchito ngati zosindikizira zodzaza, ulusi wamfupi, ukhoza kugwiritsidwa ntchito mu singano.
Komanso, PTFE filimu kapena pepala angathenso kudula mu ting'onoting'ono m'lifupi, ndiyeno mwachindunji kumakoka yopapatiza nsalu zopangidwa ndi mkulu mphamvu PTFE ulusi.Koma n'zovuta kukhala yunifolomu akamagwira kudula pamodzi longitudinal malangizo kudzera yopapatiza m'lifupi mwa nsalu, ndi yopapatiza nsalu amakonda kutha mbali ya fibril, kwambiri Tambasula mu yopapatiza nsalu PTFE ulusi mosavuta wosweka kapena mwa tsankho kudula mu malangizo kotenga nthawi. filimuyi ndi filament PTFE nembanemba kulunjika.Pamodzi ndi nembanemba wa utali malangizo ndi yopingasa malangizo a filimu ndi mawonekedwe az kapena liniya-otukukirani mawonekedwe mawonekedwe embossed ndi odulidwa, chifukwa filament kuphatikizapo fibrils munthu pang`ono wosweka kulamulira dongosolo maukonde.PTFE ulusi opangidwa motere fibrils munthu ndi yaing'ono pafupifupi kukula ndi yunifolomu kukula.
Japan Asahi of into Corporation kudzera mu kudula filimuyo crack legal kukhala ndi mphamvu zotambasula kwambiri, ndi resistance chemical performance yabwino kwambiri ya ulusi wa PTFE.adzakhala ndi bowo mlingo 48% wa PTFE filimu kung'ambika mu 222 dtex CHIKWANGWANI, kachiwiri pa kupindika wake wowonjezera 750 kupindika/m, mu 440 ℃ ndi 1 000 m/mphindi kutambasula Xia, kupeza kachulukidwe CHIKWANGWANI kwa 55 dtex, ndipo muli dzenje mlingo 1%, modulus mpaka 294 cN/dtex.
Matani extrusion kupota njiraMatani extrusion kupota kupota nthawi zambiri PTFE ufa 16% ~ 25% ndi unyinji gawo la kusakhazikika mafuta zosakaniza zosakaniza, ikani mu phala, opangidwa ndi zoumbika zoumbidwa kale miluza, ndi pansi pa kupsyinjika kwina kudzera spinneret ndi chingwe kufa extrusion kupota, ndiyeno mwa kuyanika, sintering, kutambasula kwakukulu pansi pa kutentha kwakukulu, ulusi woyera wopanda yunifolomu.Komanso, akhoza Finyani filimu extrusion zida kapena n'kupanga woonda, ndiye ndi akugubuduza ndondomeko kuchotsa zina, ndi kotenga nthawi kudula, kujambula ndi fluffy pambuyo processing, ndi PTFE ulusi anapangidwa ndi phala extrusion wa khoma woonda, m'mimba mwake yaing'ono ndi permeability wa PTFE. ulusi wopanda kanthu.PTFE ufa m'mikhalidwe yomwe ili pansi pa malo ake osungunuka opangidwa ndi PTFE opanda fiber, ndiyeno kuwombera 10 min pa 350 ℃, 250 ℃ pansi pa 400%, inali 0.76 mm mkati mwake ndi makulidwe a khoma la 0.10 mm, m'mimba mwake osakwana 0.15 mm ulusi wopanda kanthu.
Mu 1997, M. Shimizu akupereka njira yokonzekera mphamvu zambiri ndi PTFE ulusi ndi phala extrusion.Kuwonjezedwa kwa PTFE ufa misa kachigawo 20% ya mafuta, mluza, extrusion, anapeza waya umodzi, kutentha mankhwala ndiyeno 350 ℃ 1.5h, ndi 387 ℃ kwa 50 mm/mphindi ya liwiro kutambasula nthawi 10, analandira mphamvu monga 1.56 ~ 2.82 GPa PTFE ulusi.
The PTFE ufa anali wothira lubricant (isoparafini mafuta Isopar-E) kupanga phala, ataima pa 0 ℃ 180 h pa 40 ℃ mankhwala 30 h, kupanga kusakaniza zonse kunyowetsa ndi kutupa, ndiye akanikizire mwana wosabadwayo ndi extrusion , kugwira 2 h. pansi pa 340 ℃, ndiyeno ku 0. 5 c/mphindi liwiro mpaka firiji, potsiriza kutambasula kuti alowe mu 370 c PTFE CHIKWANGWANI, 3.5 ~ 4.0 cN/dtex mphamvu yothyoka, elongation yopuma ndi 22%.
Sungunulani njira yozungulira
Sungunulani kupota ndi PTFE zili 4% ~ 5% wa perfluorinated ethylene copolymer wa perfluoro-n-propyl efa wosanganiza kupota kusungunula, pambuyo kupota ndi wononga extrusion makina mpope kuchuluka kuthamanga jekeseni dzenje, kupanga izo mu mtsinje wabwino mu mlengalenga, ndi kuzirala. mu njira yozungulira mu waya.PTFE ulusi mkulu mphamvu njira imeneyi, koma PTFE supermolecular dongosolo kusintha pambuyo kusungunuka, kutsogolera ductility mbisoweka ndi maselo unyolo lolunjika Tambasula watsekedwa, pamodzi ndi PTFE mkulu mamasukidwe akayendedwe ndi zoonekeratu kusinthasintha, PTFE Sungunulani CHIKWANGWANI wokonzeka ndi wononga extruder kwa kuyerekezera mwachindunji zovuta, zovuta kukwaniritsa mafakitale.Plunger extrusion njira akhoza kuthana ndi vutoli.The plunger mu ndondomeko extrusion, chifukwa kwambiri otsika padziko mphamvu ya PTFE ndi khoma-kuzembera chodabwitsa, kuchepetsa zosafunika kukameta ubweya mu ndondomeko otaya, kotero iwo akhoza kukhala pa PTFE Sungunulani kupota.Li Min ndi munthu wina ku yunivesite ya Donghua, amakonzedwa ndi PTFE fiber yokhala ndi kulemera kwakukulu kwa mamolekyulu.Tervoort ndi mkulu wachibale maselo misa monga PTFE ndi PTFE wothira otsika wachibale maselo misa, kusungunula processing, kukonzekera PTFE filament.Katundu wa PTFE ulusi opangidwa motere kuposa wa koyera PTFE CHIKWANGWANI ndi mkulu maselo kulemera.
Nthawi yotumiza: Nov-04-2018