PTFE-yakavharidzirwa fiberglass jira chinhu chinoumbwa chakagadzirwa nekupfekedza jira refiberglass rine polytetrafluoroethylene (PTFE) dispersion uyezve kunyura pakupisa kwakanyanya. Chimiro chayo chinogona kukamurwa kuita zvikamu zviviri: iyo PTFE coating uye fiberglass base jira.
Munzvimbo dzinotyisa dzemakemikari, shanduko yezvimiro zvinoenderana nerudzi, fungidziro, uye tembiricha yepakati inoora, pamwe nekuti inonyanya kurwisa jasi kana substrate. Ngationgororei iyi dhizaini nedhiza kubva pamaonero ePTFE-yakavharwa fiberglass vanogadzira machira:
I. Shanduko muPTFE Coating: Yakanyanya Kugadzikana muMakasi Mazhinji Enyaya
PTFE inozivikanwa se 'King of Plastics'. Munzvimbo dzakajairika dzinoparadza makemikari (kusanganisira kufashaidza aqua regia, concentrated sulfuric acid, concentrated nitric acid, organic solvents, etc.), chimiro chayo chemocular cheni chinochinja zvachose. Nekudaro, pasi pemamiriro anotevera akanyanya, chimiro chichakuvadzwa:
-Structural Shanduko: Alkali simbi inoburitsa maatomu efluorine kubva kuPTFE, zvichikonzera dehydrofluorination reaction. Iwo -CF₂- mapoka ari mucheni yemamorekuru anoparadzwa, achigadzira kabhoni-kabhoni kaviri zvisungo (-C = C-) uye zvichizotungamira kune carbonization.
-Macroscopic Manifestation: Iyo yekupfeka inoshanduka kubva kuchena mukaka / inopenya kuenda kune brown kana dema, inorasikirwa nekuchinjika, inoita brittle, uye hupfu. Uku ndiko kuparara kwemakemikari.
2. Yakasimba Fluorinating Agents uye Mamwe maHalogenated Hydrocarbons (pasi pekushisa kwakanyanya uye kumanikidzwa)
- Elemental fluorine (F₂), chlorine trifluoride (ClF₃), uye maajenti akafanana anogona kutyora kabhoni-kabhoni musana, zvichiita kuti rukuvhute kuora.
- Pasi pekushisa kwakanyanya uye kumanikidzwa, mamwe maFreon-type solvents anogona kukonzera kuputika kwakanyanya kwePTFE. Kunyange zvazvo kemikari inogadzirisa ingasaitike, chimiro chemuviri chinotambura nekuderedzwa kwekristallinity, kuwedzera kwevhoriyamu, uye kurasikirwa kwesimba nekuda kweketani dzemamorekuru dziri kumanikidzwa kuparadzaniswa.
3. Yakasimba Oxidizing Acids panguva High Temperatures
- Kunyudzwa kwenguva refu mukufukidzira nitric acid kana kupisa kwakanyanya sulfuric acid kunogona zvishoma nezvishoma oxidize iyo PTFE pamusoro, kuunza mapoka epolar akadai secarbonyl uye hydroxyl mapoka, uye kuwedzera pamusoro pesimba. Zvisinei, izvi hazviwanzoonekwa mumashandisirwo akajairwa.
Key Point: Pahuwandu hwakawanda hwemakemikari media, iyo PTFE yakazviputira pachayo 'haina kuchinjika.' Zvisinei, dambudziko rinowanzova muchokwadi chekuti haisi kunyura zvachose, pamwe chete nechimiro chayo chemuviri.
II. Shanduko muFiberglass Base Fabric: Iyo isina Simba Link yeEse Material
Izvo zvakakosha zvefiberglass isilicon dioxide (SiO₂) uye mamwe simbi oxides. Kana chikamu ichi chikasvibiswa, chimiro chese chemucheka wepamusoro-soro chichaputsika.
1. Kuuraya Kunouraya kweHydrofluoric Acid (HF)
- Shanduko dzeChimiro: HF inosangana nemaitiro chaiwo neSiO₂: SiO₂ + 4HF → SiF₄↑ + 2H₂O. Iyo fiberglass skeleton inonyungudika zvakananga uye inonyangarika.
- Macroscopic Manifestation: Iyo jira rejira rinokurumidza kupera simba, richiita seganda rakapfava richingosara rejasi, kubvaruka zviri nyore pakudhonza, nekuparadzaniswa kwakakura pakati pejasi neiyo substrate. Iyi ndiyo inonyanya kutyisa kemikari corrosion yegirazi-fiber-based materials. Chero bedzi paine pinholes mujasi kana akafumurwa mipendero, kukuvara kunoparadza.
2. Slow Etching by Strong Alkalis (kunyanya inopisa concentrated alkalis)
- Kuchinja Kwemaitiro: OH⁻ ions inoputsa siloxane zvisungo (-Si-O-Si-) mune yegirazi network, ichigadzira soluble silicates. Iyo fiber surface inoshanduka kubva pakutsvedzerera kuenda kune yakaoma, ine etching makomba uye makatsemuka achionekwa, iyo fiber diameter inotetepa, uye pakupedzisira inotsemuka.
-Kuratidzwa kweMacroscopic: Simba rinoramba richidzikira, jira rinoita brittle, uye kana rakakotama, tambo dzakatsemuka dzinobuda mukati mejasi, zvichiita kuti jasi ritsemuke uye kubvaruka.
- Kuchinja Kwemaitiro: Kazhinji acids (hydrochloric acid, sulfuric acid, etc.) inonyanya kuburitsa kunze kwezvikamu zvisiri-silica (zvakadai sealuminium, calcium oxides, nezvimwewo) kubva mufiberglass, zvichisiya zvakanyanya silica skeleton. Iyi nzira inowanzo zivikanwa se 'leaching,' ichigadzira microporous chimiro pane fiber pamusoro.
- Macroscopic Manifestation: Iro jira rinova rakaoma uye rakawedzera brittle, nekuchinja mukuderera, kunyange iyo fomu yese inogona kuchengetedzwa. Simba rinodzikira nekuda kwekunetsekana.
III. Shanduko paComposite Interface: Yakavanzwa Kukundikana
Mamiriro emakemikari kazhinji haarwise musoro-pane asi anopinda kubva kumicheto kana kuburikidza nediki-kukanganisa.
-Kupinda uye Delamination: Organic solvents kana asidhi mhinduro inopinda nemupini, madiki-akatsemuka, kana kucheka mipendero muPTFE coating, ichirwisa fiberglass. Zvigadzirwa zvemaaction kana zvinwiwa zvinopinda zvinoungana painterface, zvichigadzira osmotic pressure, zvichiita kuti PTFE coating iite mablister uye delaminate kubva pafiberglass substrate pamwero mukuru.
- Stress Corrosion Cracking: Iyo yakakwira-tembiricha jira iri pasi pekunetsekana panguva yekushandiswa. Kuora kwefiberglass nemakemikari media (kunyanya akasimba alkalis) anoita synergistically ne mechanical stress, zvichiita kuti makatsemuka akurumidze kupararira pamwe chete nefiber radial direction, zvichiita kuti jira rakangoerekana raputsika neakachena brittle-fracture morphology panguva yekuzorora.
Munzvimbo dzinotyisa dzemakemikari, kuchinja kwemaitiro ePTFE-yakavharwa fiberglass jira inogona kupfupikiswa se: 'King of Plastics' kupfeka kunoramba kwakagadzikana segomo, nepo fiberglass base jira-yakambopinda kana kurwiswa-inova chitsitsinho cheAchilles, zvichiita kuti skeleton dissolution, delaps uye skeleton dissolution kubva mukati memukati mese, kuputika uye kupindirana kwezvinhu zvose.
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Mashoko ari pamusoro apa anopiwa ne Jiangsu Aoke New Material Technology Co., Ltd.
Kana iwe uchida kudzidza zvakawanda pamusoro pezvakadzama parameters, mamiriro ekushandisa, uye sarudzo dzekugadzirisa dzemhando yedu yakazara yezvigadzirwa-kusanganisira PTFE-yakavharwa fiberglass machira, PTFE-yakavharwa fiberglass tepi, PTFE-yakavharwa fiberglass mesh mabhandi, adhesive-bonded seamless mabhandi, single-sided PTFE-yakakwirira-inomira, inomira-inomira jira regirazi rinodzivirira-ndapota inzwa wakasununguka kutibata nesu:
Nharembozha:
VaGuo: 18944819998
Mr. Liu: 13705266308
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