Mumiti yemakemikari, mitsetse ye electroplating, uye semiconductor machira, midziyo inogara ichioneswa kune hukasha acids, alkalis, uye zvinonyungudutsa. Kusarudza izvo zvinodzivirira zvinokanganisa zvakananga kuchengetedza uye hupenyu hwemidziyo.
PTFE (polytetrafluoroethylene) inowanzodaidzwa kuti 'mambo wepurasitiki' nekuda kwekunyanya kusasimba kwemakemikari. Asi 'inert' hazvireve kuti 'haakundiki' - ndeapi makemikari anogona kunyatsoikuvadza? Ko tembiricha uye kuisa pfungwa pazviri zvinokanganisa sei kuita kwayo?
PaAokai PTFE , tapedza makore tichiyedza PTFE-yakavharwa machira achipesana nechaiyo-nyika yemakemikari nharaunda. Ichi chinyorwa chinogovera zvatinowana kuti zvikubatsire kusarudza zvine hungwaru.
Makemikari Ane PTFE Yakakwira-Tembiricha Mucheka Inorambira
1. Maasidhi Akasimba
PTFE jira rinopa yakanakisa kuramba kune:
2. Alkali Yakasimba
Inopikisa sodium hydroxide (NaOH), potassium hydroxide (KOH), ammonia water (NH₃·H₂O), uye zvimwe zvakasimba alkaline zvinhu.
3. Organic Solvents
Kemikari inert inopesana nemazhinji organic solvents, kusanganisira madoro (methanol, ethanol), ketones (acetone, MEK), anonhuwirira hydrocarbons (benzene, toluene, xylene), uye peturu.
4. Mamwe Kemikari
Inochengetedza kushanda kwakadzikama pakurwisa oxidants (semuenzaniso, hydrogen peroxide), munyu (sodium chloride, sodium sulfate), uye magasi anoparadza (chlorine, hydrogen sulfide).
Mamiriro - Makemikari Anokuvadza PTFE Fabric
Pasinei nepamusoro pemakemikari kuramba, PTFE high-temperature jira ine zvisingakwanisi pasi pepamusoro-tembiricha yepamusoro kana yepamusoro-concentration mamiriro. Mamwe makemikari mashoma anogona kukonzera kukuvadzwa sekunyorwa pazasi:
Zvisingarambiki |
Kukuvadza Mamiriro & Migumisiro |
Yakanyungudutswa alkali simbi (sodium, potassium) |
Kuparadza zvakanyanya PTFE molecular chimiro - iyo PTFE inoderedzwa kuita kabhoni |
Yakasimba fluorinating agents (fluorine gasi, chlorine trifluoride, perchloryl fluoride) |
React uye bvisa zvinhu, kunyanya pakupisa kwakanyanya |
Pamusoro pezvo, PTFE yakavharwa jira harikurudzirwe kushandiswa ne:
Chlorine trifluoride (ClF₃) - kupisa kwega kwega kunogona kuitika
Oxygen difluoride (OF₂) - kuita zvechisimba
Liquid kana gaseous fluorine (F₂) pane yakakwirira tembiricha - inorwisa PTFE
Zvinhu Zvinokanganisa Kemikari Resistance yePTFE Yakavharwa Fabric
Zvizhinji zvinhu zvinokanganisa iko kuomarara kuramba kwePTFE yakakwirira-tembiricha jira mumashandisirwo epasirese:
Tembiricha: Kugadzikana kwemakemikari kuita kunochengetwa mukati -70 ° C kusvika 260 ° C. Resistance inodzikira kurwisa makemikari chaiwo pakupisa kwakanyanya.
Concentration: Kunyudzwa kwenguva refu mumidhiya inoodza zvakanyanya inogona kukanganisa kushanda kwezvinhu. Pa-saiti bvunzo inokurudzirwa.
Mechanical stress: Yakasanganiswa kemikari corrosion uye mechanical friction inowedzera kukwegura. Kuchengetedza iyo PTFE yekuputira kubva kumakwara kwakakosha - kana yangokuvadzwa, iyo iri pasi fiberglass inova panjodzi.
Nguva yekuratidzira: Yenguva pfupi-pfupi yekusapusha kuramba kunosiyana nekuramba kunyudzwa.
Dzvinyiriro: Kudzvinyirirwa kwakasimudzika kunogona kumanikidza makemikari kuita ma pores asingaoneki kana kukanganisa kwekuvhara.
Aokai PTFE's lab data inoratidza kuti tembiricha-yakadzika synergy inowanzo tarisirwa pasi. Semuenzaniso, PTFE jira rinogara makore mu50% sulfuric acid pa100°C rinogona kuratidza kuchena kwepamusoro mukati memwedzi pa200°C pamwe chete nekusagadzikana. Gara uchiisa chikamu chekuchengetedza.
Summary - Chemical Resistance yePTFE Yakakwirira-Tembiricha Fabric
Chemical Category |
Resistance Level |
Notes |
Asidhi yakasimba (sulfuric, nitric, HCl, HF, aqua regia) |
Excellent |
Kusvikira ku 260 ° C, kunze kwekupisa kwakanyanyisa oxidizing acids |
Alkalis yakasimba (NaOH, KOH, ammonia) |
Excellent |
Hapana kukanganisa kwakakosha |
Organic solvents (doro, ketoni, aromatics, peturu) |
Excellent |
Kuzvimba kunogona kuitika nemamwe masolvents |
Oxidants, munyu, magasi anoparadza |
Zvakanaka kune Zvakanaka |
Tarisa mamiriro chaiwo |
Masimbi akanyungudutswa alkali |
Hazvina kufanira |
Complete degradation |
Simba fluorinating agents |
Hazvina kufanira |
Chemical reaction panguva yakakwira |
Kune akawanda maindasitiri emakemikari nharaunda, PTFE yakavharwa jira inopa yakavimbika, inogara-yakareba kuita. Nekudaro, gara uchisimbisa kuenderana pasi pemamiriro chaiwo ekushanda - kunyanya tembiricha, kutarisisa, uye kushushikana kwemagetsi.
Muchidimbu , PTFE high-temperature jira rinopa kupikisa kwakaringana kunenge ese acids, alkalis, uye organic zvinonyungudutsa mukati menguva yaro yekushanda (-70 ° C kusvika 260 ° C). Misiyano yakakosha isimbi yakanyungudutswa yealkali uye yakasimba fluorinating agents. Inopisa, yakadzika oxidizing acid inodawo kungwarira.
Mukuita, tembiricha, kuisa pfungwa, uye kushushikana kwemagetsi zvinoshanda pamwechete kukanganisa hupenyu hwenyama. Pamamiriro ezvinhu akaoma, tinokurudzira pa-saiti kuyedzwa kana kushandisa 30-40 ° C yekuchengetedza muganho pazasi petembiricha yakayerwa.
Unoda rubatsiro nenzvimbo chaiyo yemakemikari? Aokai PTFE 's tekinoroji timu yakanyora corrosion data yemazana emidhiya. Bata isu kuti uwane nhungamiro yekusarudza kana yakagadziridzwa PTFE yakavharwa machira mhinduro.
Yakabudiswa neJiangsu Aokai New Materials Technology Co., Ltd.
Kuti uwane yakadzama paramita, mamiriro ekushandisa, uye yakagadziridzwa mhinduro yezvizere-yakatevedzana zvigadzirwa zvinosanganisira PTFE yakakwirira tembiricha tepi, PTFE mesh bhandi, isina musono fusing bhandi, single-sided PTFE jira, tembiricha isingachinji bhandi uye fiberglass machira , ndapota inzwa wakasununguka kutibata nesu:
Isu tinoomerera kune hunyanzvi uye kutendeseka, yakazvipira kupa imwe-stop mhinduro uye masevhisi ane hanya.
