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 inoparadza, pamwe nekuti inonyanya kurwisa coating 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, zvichingodaro.), chimiro chayo checheni yemamorekuru inongoitika pasina shanduko yemakemikari. 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 yemukaka / kupenya 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. Kunyangwe kemikari ichiita ingasave yakaitika, chimiro chemuviri chinotambura nekudzikiswa kwekristaro, kuwedzera kwevhoriyamu, uye kurasikirwa kwesimba nekuda kwemacheni emamorekuru ari kumanikidzwa kuparadzaniswa.
3. Yakasimba Oxidizing Acids panguva High Temperatures
-Kunyudzwa kwenguva refu mu fuming nitric acid kana inopisa concentrated sulfuric acid inogona zvishoma nezvishoma oxidize PTFE pamusoro, kuunza polar mapoka akadai carbonyl 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 pakuti harina 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 yejira yejira inokurumidza kupera simba, ichiita seganda rakapfava richingosara rejasi, kubvaruka nyore pakudhonza, nekuparadzana kwakakura pakati pejasi uye 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 inotyora siloxane zvisungo (-Si-O-Si-) mune yegirazi network, ichigadzira soluble silicates. Iyo faibha pamusoro inoshanduka kubva pakatsetseka kuenda kune yakaoma, ine etching makomba uye makatsemuka achionekwa, iyo fiber dhayamita inotetepa, uye pakupedzisira kutsemuka.
-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 maasidhi (hydrochloric acid, sulfuric acid, etc.) anonyanya kubudisa zvinhu 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 inonamira ipupume uye ideremekedze 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.
Mumamiriro ezvinhu emakemikari anoparadza, kuchinja kwemaitiro ePTFE-yakavharidzirwa fiberglass jira inogona kupfupiswa se: 'King of Plastics' kupfeka kunoramba kwakagadzikana segomo, nepo fiberglass base jira-yakambopinda kana kurwisa-inova chitsitsinho cheAchilles, zvichiita kuti skeleton iparare, kuparara uye kusanganiswa kwemukati kubva mukati memukati mese.
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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-yakavezwa fiberglass tepi, PTFE-yakavharidzirwa 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
Isu tinogara tichitsigira uzivi hwesevhisi yehunyanzvi uye inofambiswa nekuvimbika, uye takazvipira kukupa iwe-imwe-yekumira mhinduro uye inoteerera sevhisi!
