Kuviika zida zachipatala: zomwe muyenera kudziwa

Pankhani yamadzimadzi emulsion dipping mankhwala, mndandanda wa masitepe ndondomeko ayenera anamaliza kuonetsetsa bwino akamaumba, vulcanization ndi pamwamba mankhwala kukumana ndi zosowa kasitomala mu ntchito yomaliza. Dip akamaumba amatha kupanga cholimba zida zachipatala zigawo zosiyanasiyana akalumikidzidwa, makulidwe ndi makulidwe khoma, kuphatikizapo zovundikira kafukufuku, mvukuto, zisindikizo khosi, magolovesi opaleshoni, mabuloni mtima ndi mbali zina zapadera. Raba yachilengedwe imakhala yolimba kwambiri komanso imakhala yolimba kwambiri, koma imanyamulanso mapuloteni omwe angayambitse kusamvana m'thupi la munthu. Mosiyana ndi izi, neoprene yopangidwa ndi polyisoprene yopanga sizimayambitsa ziwengo. Neoprene imatha kupirira mayeso azinthu zambiri; imagonjetsedwa ndi moto, mafuta (zapakatikati), nyengo, kuwonongeka kwa ozoni, kuphulika ndi kusinthasintha, kukana kwa alkali ndi asidi. Pankhani yakumva komanso kusinthasintha, polyisoprene ndi choloweza m'malo mwa mphira wachilengedwe ndipo imalimbana bwino ndi nyengo kuposa labala lachilengedwe la mphira. Komabe, polyisoprene imapereka mphamvu zolimba, kukana misozi, ndi kukakamiza. Mawu akuti "impregnation" amagwirizana ndi ntchito mu mawonekedwe a impregnation. Ndipotu, pamene ndondomekoyi ikuchitidwa, tebulo lidzamizidwa muzinthuzo. Ndikofunikira kwambiri kuwonetsetsa kuti kupanga mphira kukugwirizana ndi malangizo ndi zofunikira za chipangizo chachipatala cha FDA. The impregnation ndondomeko akhoza yodziwika ngati kutembenuka zinayendera: mphira amatembenuzidwa kuchokera madzi kukhala olimba, ndiyeno mankhwala n'kukhala vulcanized maselo maukonde. Chofunika kwambiri, ndondomeko ya mankhwala imasintha mphira kuchokera ku filimu yosalimba kwambiri kuti ikhale yolumikizana ndi mamolekyu omwe amatha kutambasulidwa ndi kupunduka, ndikubwereranso ku mawonekedwe ake oyambirira. Njira yolimbitsira sikofunikira nthawi zonse panjira zonse za "kuviika", koma ndikofunikira pakutsata kwathu. Mphira umatha kusinthidwa kuchoka pamadzi kukhala olimba poumitsa mpweya, koma izi zimatenga nthawi yayitali. Ziwalo zina zopyapyala zimapangidwa motere. Njira yolimba imagwiritsa ntchito mankhwala kukakamiza chikhalidwe ichi kuti chisinthe. Coagulant ndi osakaniza kapena njira yothetsera mchere, surfactant, thickener, ndi kumasula wothandizila mu zosungunulira (nthawi zambiri madzi). Mwanjira zina, mowa ukhoza kugwiritsidwanso ntchito ngati zosungunulira. Mowa umasanduka nthunzi msanga ndipo umakhala wotsalira pang'ono. Ma coagulant ena opangidwa ndi madzi amafunikira thandizo la uvuni kapena njira zina zowumitsa coagulant. Chigawo chachikulu cha coagulant ndi mchere (calcium nitrate), yomwe ndi zinthu zotsika mtengo zomwe zimapereka mgwirizano wabwino kwambiri wa coagulation mu mawonekedwe olowetsedwa. The surfactant amagwiritsidwa ntchito kunyowetsa mawonekedwe olowetsedwa ndikuwonetsetsa kuti zokutira zosalala, zofananira za coagulant zimapangidwa pamawonekedwe. Chotulutsa, monga calcium carbonate, chimagwiritsidwa ntchito popanga coagulant kuti athandize kuchotsa gawo la mphira lochiritsidwa kuchokera mu mawonekedwe oviikidwa. Chinsinsi cha ntchito ya coagulant chimaphatikizapo kupaka yunifolomu, kutuluka kwa nthunzi mofulumira, kutentha kwa zinthu, kulowa ndi kuchira msanga, komanso kusintha kosavuta kapena kukonza kashiamu. Apa ndi pamene mphira umasintha kuchoka pamadzi kukhala olimba. Mankhwala omwe amalimbikitsa coagulation, coagulant, tsopano amagwiritsidwa ntchito ku mawonekedwe opangidwa ndi impregnated ndipo ndi youma. Mawonekedwewo ndi "oyikidwa", kapena kumizidwa mu thanki ya rabara yamadzimadzi. Rabara ikakhudzana ndi coagulant, kashiamu yomwe ili mu coagulant imapangitsa mphira kukhala wosakhazikika ndikusintha kuchoka kumadzi kukhala olimba. Kutalika kwa chitsanzocho kumizidwa, khoma limakula. Mankhwalawa amapitilirabe mpaka kashiamu yonse itachotsedwa mu coagulant. Chinsinsi cha kuviika kwa latex kumaphatikizapo liwiro lolowera ndi kutulutsa, kutentha kwa latex, kufanana kwa zokutira kwa coagulant, ndikuwongolera pH, kukhuthala ndi zolimba zonse zomwe zili mu rabara. Njira ya leaching ndiyo gawo lothandiza kwambiri pochotsa mankhwala opangidwa ndi madzi osafunikira kuchokera kuzinthu zomaliza. Nthawi yabwino yochotseratu zinthu zosafunikira mufilimuyi ndi leaching musanachiritse. Zigawo zazikuluzikulu zakuthupi zimaphatikizapo coagulant (calcium nitrate) ndi rabala (natural (NR); neoprene (CR); polyisoporene (IR); nitrile (NBR)). Kusakwanira kwa leaching kungayambitse "thukuta", mafilimu omata pazomwe zamalizidwa, komanso chiopsezo chowonjezeka cha kulephera kumamatira ndi kusagwirizana. Chinsinsi cha leaching ntchito chimaphatikizapo khalidwe la madzi, kutentha kwa madzi, nthawi yokhalamo ndi kutuluka kwa madzi. Sitepe iyi ndi ntchito ziwiri. Madzi mufilimu ya rabara amachotsedwa, ndipo pakapita nthawi, kutentha kwa uvuni kudzayambitsa accelerator ndikuyamba kuchiritsa kapena vulcanization. Mukamakonza zabwino zakuthupi zamitundu yosiyanasiyana ya mphira, nthawi yochiritsa ndi kutentha kwa machiritso ndizofunikira. Pali njira zambiri zochizira pamwamba pazigawo zoviikidwa kuti ziwalozo zisamamatire. Zosankha zimaphatikizapo magawo a ufa, zokutira za polyurethane, kutsuka kwa silikoni, chlorination ndi kutsuka sopo. Ndizokhudza zomwe makasitomala amafuna kapena amafunikira kuti zinthu zawo zikhale zopambana. Kulembetsa kapangidwe kazachipatala ndi kutumiza kunja. Ikani chizindikiro, gawanani ndikugawana ndi otsogola amisiri wamaluso azachipatala lero. DeviceTalks ndi kukambirana pakati pa atsogoleri aukadaulo azachipatala. Ndizochitika, ma podcasts, ma webinars, ndikusinthana kwapamodzi ndi malingaliro ndi zidziwitso. Magazini ya Medical Device Business. MassDevice ndi buku lotsogola lazachipatala lomwe limafotokoza za zida zopulumutsa moyo.