Ndeapi Makemikari Anogona Kuparadza PTFE Yakakwira-Tembiricha Mucheka?

PTFE ine mukurumbira nekusashanda kwemakemikari - inowanzonzi 'King of Plastics.' Inopikisa maasidhi ese, alkali, uye zvinonyungudutsa patembiricha yepakamuri. Zvakadaro, 'zvinenge zvese' hazvisi 'zvese.' Pasi pemamiriro ezvinhu akanyanya - tembiricha yakakwira, yakakwira, kana yakanyungudutswa - mamwe makemikari anogona kurwisa PTFE. Uye kunyangwe PTFE pachayo ikapona, iyo iri pasi pefiberglass substrate inogona kuve panjodzi kana iyo yekupfeka iine hurema.

Kunzwisisa zvipimo izvi zvakakosha pakusarudza jira rePTFE munzvimbo dzakaoma dzemakemikari.

Aokai PTFE yakaedza PTFE-yakavharwa machira kurwisa makemikari ane hukasha. Gwaro iri rinotsanangura izvo zvinosvibisa PTFE zvakananga, chii chinorwisa fiberglass substrate, uye nzira yekudzivirira kutadza.

Maitirwo eCorrosion - Maitiro maviri

PTFE high-temperature jira rine zvikamu zviviri: a PTFE coating (yakaonda, isina-stick, chemically inert) uye fiberglass substrate (inopa simba asi iri panjodzi kune mamwe makemikari). Corrosion inoitika nenzira mbiri:

1. Kukukurwa kwakananga kwePTFE coating

Izvi zvinongoitika pasi pemamiriro akanyanya - kupisa kwepamusoro, kukwirisa kwakanyanya, kana kunyungudika. Patembiricha yemumba, PTFE haigone kutungamira kurwisa kwemakemikari.

2. Kuora kwefiberglass substrate kuburikidza nekukanganisa kwekuvhara

Makemikari anopinda mukati memapini, anokwenya, kana madiki-akatsemuka muPTFE coating uye anorwisa magirazi fiber. Iyo PTFE pachayo inogona kunge ichiri kutaridzika zvakanaka, asi jira rinorasikirwa nemagetsi uye rinogona kubvaruka nyore. Iyi ndiyo yakajairika yekutadza maitiro kana iyo coating yakuvadzwa.

Mishonga Inorwisa Yakananga PTFE Coating

Izvi zvinhu zvinosangana nePTFE pachayo, asi chete pasi pemamiriro akanyanya.

1. Yakanyungudutswa alkali simbi - yakanyanya kufanana

Yakanyungudutswa sodium (Na), potasium (K), uye lithium (Li) inobvisa maatomu efluorine kubva kuPTFE, zvichikonzera carbonization, dema discoloration, uye hupfu hwechinhu chiri pamusoro. Iyo sodium-naphthalene mhinduro inoshandiswa PTFE etching inoshanda pane iyi musimboti.

• Mhedzisiro: Kuparadza zvachose kwePTFE chimiro.

• Mamiriro ezvinhu: Chero kuratidzwa kune zvakanyungudutswa alkali simbi (pamusoro penzvimbo dzadzo dzakanyungudika, semuenzaniso, Na pa98°C).

• Zvinokurudzira: Dzivisa zvachose. Shandisa yakachena PTFE firimu chete kana zvichidikanwa, uye kunyangwe ipapo nekuchenjerera.

2. Strong fluorinating agents pakupisa kukuru

Izvi zvinhu zvinogona kuwedzera kuora PTFE pasi pekupisa kwakanyanya:

• Fluorine gasi (F₂): Inokonzera kuora zvishoma nezvishoma pakupisa kwakanyanya uye kumanikidzwa.

• Interhalogen fluorides: Makemikari akanyanya kuita senge chlorine trifluoride (ClF₃) uye bromine pentafluoride (BrF₅) anogona kukonzeresa kuita kwakanyanya kana kupisa kwePTFE pakupisa kwakanyanya.

• Yakasimba oxidizing fluorides: Semuenzaniso, xenon difluoride (XeF₂).

Kurudziro: Chengetedza PTFE jira kure nemakemikari aya, kunyanya patembiricha yakakwira.

3. Yakanyungudutswa maalkali ane simba pakupisa kukuru

Molten sodium hydroxide (NaOH) uye potassium hydroxide (KOH) zvishoma nezvishoma zvinosvibisa PTFE pamusoro pe300 ° C, zvichiita kuti kurasikirwa kwehydrophobicity uye kupenya kwepamusoro. Pazasi pe300 ° C, PTFE inoramba alkalis zvakanaka. Pane tembiricha yemumba, hapana mhedzisiro.

4. Reactive metal powders pakupisa kukuru

Magnesium powder (Mg), aruminiyamu poda (Al), uye zvinhu zvakafanana zvinopindira nechisimba nePTFE pakupisa kwepamusoro, zvichiita metal fluorides uye carbon. Iyi ndiyo hwaro hwemamwe pyrotechnic uye incendiary nziyo dzine PTFE.

Makemikari Anorwisa iyo Fiberglass Substrate Kuburikidza neCoating Defects

Makemikari aya haaite nePTFE, asi kana iyo PTFE coating iine chero pinhole, kukwenya, kana kumucheto kuratidzwa, ivo vanopinda nekuparadza fiberglass.

1. Hydrofluoric acid (HF) - inonyanya kuipa

Hydrofluoric acid inoparadza zvakanyanya kune fiberglass. Inopindirana nekukurumidza nesilicon dioxide (iyo chikamu chikuru chegirazi) kugadzira silicon tetrafluoride gasi, kunyungudutsa magirazi egirazi.

• PTFE pachayo inopikisa HF zvakakwana - PTFE inowanzo shandiswa kuHF kubata michina.

• Nekudaro, PTFE-yakavharwa jira HAINA kuchengetedzeka kuHF kunze kwekunge iyo yekupfeka isina pinho-isina (izvo zvakaoma zvakanyanya kuvimbisa). Chero kukanganisa kunobvumira HF kuti ipinde mufiberglass, zvichikonzera kutadza kwejira nekukurumidza.

• Kurudziro: Pasevhisi yeHF, shandisa bhaisikopo rePTFE rakachena (hapana fiberglass reinforcement) kana PTFE liner yakavharirwa zvizere ine zero pinholes dzakasimbiswa.

2. Yakaiswa alkalis pakupisa kwakanyanya

Yakanyanya concentrated sodium hydroxide (NaOH) mhinduro pakupisa kwepamusoro inogona kukanganisa fiberglass kuburikidza nekupfeka kusakwana. Kamuri-tembiricha, dilute alkalis zvakachengeteka.

3. Yakaiswa phosphoric acid pakupisa kwakanyanya

Kubata kwenguva refu nekupisa kwakadzika phosphoric acid kunokonzeresa kuora kune fiberglass. Zvekare, PTFE pachayo inoipikisa, asi kukanganisa kwekuvhara ndiyo nzvimbo isina simba.

Zviyeuchidzo zvakakosha zveChemical Service

1. Kukundikana kwakawanda kunobva pamagetsi kupfeka kana kuchembera kwemafuta, kwete kurwisa kwemakemikari

Mumazuva ese maindasitiri ekushandisa (makemikari zvirimwa, kugadzira chikafu, nezvimwewo), PTFE jira rinokundikana nekuda kwekupwanya, kubvaruka, kana kupisa kupisa nguva refu kemikari isati yatanga nyaya. Iyo kemikari inertness yePTFE ndeyechokwadi uye yakavimbika kune angangoita ese akajairika makemikari anosvika 260°C.

2. Kana uchifanira kubata makemikari ane hasha, shandisa yakachena PTFE firimu

Pazvishandiso zvinosanganisira simbi dzakanyungudutswa dzealkali, inopisa yakadzika HF, kana yakasimba fluorinating agents, PTFE-yakavharidzirwa fiberglass haikurudzirwe . Pane kudaro, shandisa:

• Yakachena PTFE firimu (skived kana kukandwa) isina fiberglass yekusimbisa

• PTFE-yakaiswa simbi michina

• PFA kana FEP (mamwe mafluoropolymers ane kupikisa kwakafanana asi akasiyana ma mechanical properties)

3. Gara uedze usati washandisa zvizere

Kana chikumbiro chako chinosanganisira makemikari asina kunyorwa se 'akachengeteka' mumachati akajairwa anoenderana, ita bvunzo yekuenderana kwezvinhu pasi pemamiriro chaiwo ekushanda (tembiricha, kutarisisa, nguva). Aokai PTFE inogona kupa bvunzo masampuli ekusimbisa.

Summary - Chemical Compatibility Quick Reference

Aokai PTFE inopa kemikari inoenderana kutungamira uye inogona kurumbidza chigadzirwa chakakodzera - PTFE-yakavharwa jira remaapplication mazhinji, kana yakachena PTFE firimu rekunyanyisa kemikari sevhisi. Bata isu nekemikari yako chaiyo, tembiricha, uye nguva yekuratidzwa.

Zviri pamusoro apa zvinopihwa ne Jiangsu Aokai New Materials Technology Co., Ltd.

Kana iwe uchida kudzidza zvakawanda pamusoro pezvakatsanangurwa zvakatsanangurwa, mamiriro ekushandisa uye zvigadziriso zvakagadziridzwa zvechigadzirwa chedu chizere, kusanganisira PTFE machira ekupisa, PTFE yakakwirira-tembiricha matepi, PTFE mesh mabhandi, seamless bonding muchina mabhandi, single-sided PTFE jira, yakakwirira-tembiricha inodzivirira inodzivirira machira egirazi, uye machira anodzivirira girazi

• VaGuo: +86 18944819998

• Mr. Liu: +86 13705266308

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