I-PVDF yentsapho yeFluorocarbon

November 03, 2024

I-Fluorine Redin yefom yekristali ye-PVDF, ezisisiseko, indlela ye-synthesi, iindawo zesicelo kunye nabavelisi abaziintloko

I. Ukwaziswa kwePVDF

I-Polyvinylidene Fluoride (PVDF) i-resin yimveliso ebalulekileyo ye-fluorolymer, kwaye yeyona mveliso yesibini enkulu kunye nokusetyenziswa kwe-fluorine-ene-pustin ye-binyline ye-vinyllidene ye-vinyllidene (i-vvdf) ye-vinyllide ye-vinyllide (40 ~ 2) Isigidi.pvdf Retin idibanisa iimpawu ze-sloorine resins kunye nokusebenza ngokugqibeleleyo, kwaye kuxhaphake kakhulu, i-perosion, i-peeoeectring, i-Peoelions, i-PVDF isetyenziswa ngokubanzi kwi-resorine resin , kwaye isetyenziswa ngokubanzi ekwenzeni i-Dluorine Resoons, iPVDF Rein inemisebenzi egqwesileyo, ukuba nenxaxheba, ukunganyangeki, i-insullions, i-pepicoectrity kunye ne-pieoectrity kunye nocpicoectrity kunye nocpicoectrity kunye nocpicoectrity kunye nocpicoectrity kunye nocpicoectrity kunye notholali.

I-chain ephambili ye-PVDF ineenyembezi ze-Ch2- kunye ne-CF2- kwi-PVDF ukuba ineempawu ezintle zePolythylene (-c2-cf2-) N, njl njl. Amabakala afumaneka kumabakala e-PVDF resin ayafumaneka kuluhlu olubanzi lwesayizi. Ezinye izinto ezikhoyo kwezorhwebo ze-PVDF zingabasebenzi be-vdf kunye nenani elincinci le-fanorine (ngokubanzi), ukusetyenziswa kwe-funorine-ene-sunorine-ene-funorine-ene-funorine-ene-fupolors, i-CTFE kunye ne-TFE. I-monomers ukuze i-polymer ineepropathi ezahlukeneyo ezivela kumahomollymers, njengokuphucula ukuthamba kwe-PVDF, ukuze ilungele ukulungiswa kwentambo kunye nentambo.

Okwesibini, uhlobo lwekristali yePVDF

I-Polyvinylidene Flooride (PVDF) i-Homopollys i-gomopollys ye-Semi-Plestalline ye-Crystallie Destinos esuka kwi-50% ukuya kwi-70% kuxhomekeke kwimveliso yemveliso kunye nembali ye-thermodyamic yenkqubo. Inqanaba le-crystalliety ichaphazela kakhulu ubungqola, amandla oomatshini kunye nokungaxhathisi bempembelelo zePVDF. Ezinye izinto ezichaphazela iipropathi ze-PVDF zibandakanya ubunzima bemolekyuli kunye nokusasazwa kwayo, izinto ezingahambelaniyo kwi-Polybon's Carbon-Carbon Chains, kunye ne-crystallie morphology. Ifana nenye i-Polyoolefins, i-crystalline ye-pvdf polymers iqulathe iiletha zenziwe kunye neefom ze-spherical. Umahluko ngobukhulu kunye nokusasazwa phakathi kwezi zimbini zobungakanani beemveliso ze-PVDF zimiselwa ngendlela yePolymerization.

Ikristali ye-PVDF ibonisa i-Polycrystal Dhenomenon ye-Polycrystalline engabonwa kwezinye iipoli eyaziwayo. Kukho iifom ezine ezahlukeneyo ze-crystalline: α, β, γ, kunye δ. Iifom ezintlanu zekristali ziye zaxelwa kuncwadi, ezizezile α, α, γ, δ, kunye ε. Ezi fomu zekristali zikho kwimilinganiselo eyahlukeneyo, kunye nezinto ezichaphazela umyingezo wezakhiwo zekristali zibandakanya: amandla omhlaba olawula, kunye nokungabikho kwezilwanyana zasekristali ngexesha lokuzila. α kwaye β zezona ntlobo zixhaphakileyo zekrystalline kwiimeko ezisebenzayo. I-morphology. Ngokwesiqhelo, ilizwe le-α crystalline lenziwa ngexesha lokuqhubekisa okuqhelekileyo, i-β i-β i-β i-terystalline ikhula ngoomatshini besampulu ye-MLT, i-γstalline yenziwa phantsi kwemeko ye-prostalline yenqanaba elinye phantsi kwendawo ephezulu yombane. Ukuxinana kwe-PVDF yi-1.98 g / cm3 ngayo yonke amatyala e-α, kunye ne-1.68 g / cm3 ye-Amorphous PVDF i-1.75 g / cm3, oku kubonisa ukuba isidanga sayo ye-crystallies imalunga ne-40%.

Okwesithathu, intsebenzo esisiseko yePVDF

(1) Iipropathi zoomatshini

I-PVDF ineepropathi ezigqwesileyo. Xa kuthelekiswa ne-Perfluorocarbon Polymers, i-Elastic Preformation phantsi komthwalo (okt ukuchasana kwe-curp) kungcono kakhulu, ubomi bokuguquguquka okuphindaphindiweyo bude, kwaye ukuxhaswa gadalala kuyaphucuka. Ukomelela koomatshini kuphuculwe kakhulu ngonyango lwendlela. Ukuzalisa inani elincinci le-gesi okanye iintsinga zekharbon kunokuphucula amandla e-Polymer.pvdf yoomatshini ngoomatshini bokunxibelelana zezi zilandelayo.

I-PVDF (Polyvinylidene fluoride) ineepropathi ezigqwesileyo, kunye neeparamitha zayo zoomatshini zezi zilandelayo:

Amandla obunxunguphele: Amandla abunjiweyo e-PVDF afike kwi-50MPA, phantse kabini nge-ptfe (Polytetrafluoroflene) 1.

I-Tensle modyulus: Kwinqanaba lezinyembeli ze-5mm / imiz, imodyuli ye-tensle ye-PVDF yi-2280MPA2.

Amandla e-tiles

I-Elongition kwikhefu: Kwinqanaba le-tensle le-50mm / imiz, i-elongition kwi-PVDF yi-60% 2.

Amandla e-freeXALS: Amandla e-PVDF aphakathi kwe-48 ne-62 MPA3.

I-flexotus moguysity: Imodyuli ye-PVDF iphakathi kwe-1.4 ne-1.8 GPA3.

Amandla oxinzelelo: Ukomelela kwe-PVDF phakathi kwe-69 ne-103 MPA3.

Amandla empembelelo: Ukomelela kwePVVF yi-211J-M-¶3.

Imisebenzi	I-60hz	I-10-3 hz	10-6hz	10-9hz
I-Delectric rhoqo (i-25 ° C)	I-9 ~ 10	I-8 ~ 9	I-8 ~ 9	I-3 ~ 4
Ilahleko yeDiecritric	I-0.03 ~ 0.05	0.005 ~ 0.02	I-0.03 ~ 0.05	0.09 ~ 0.11
Ukunganyangeki kwevolumu / ω.m				I-2x10-12
Amandla kaDiacritric Ubukhulu / 0.003175m Ukuphakamisa / i-0.000203m				260 1300

(2) Iipropathi zombane

Iinqobo ezisemgangathweni zepropathi yombane ye-PVDF ngaphandle kwe-filler kwaye ingenazo zidweliswe kwiTheyibhile 2, apho amaxabiso ayahluka kakhulu kwaye afumane i-polymer enefomu ye-crystalline. Ngemizekelo ephathwe phantsi kweemeko ezahlukeneyo zombane kwindawo ephezulu kakhulu yombane

Ipropathi ye-Diectric eyahlukileyo ye-PVDF kunye ne-homogeneous polycrystalline phenomeno inika le posmere ephezulu yePiezoelectric kunye neTramoelectric. Ubudlelwane phakathi kwe-ferroelectric phenomena ye-PVDF, kubandakanya i-piezoelectric kunye ne-thermoeletric, kwaye ezinye iipropathi zombane zixoxwe ngokuthe ngqo kwizalathiso. I-dielectric ephezulu yesakhiwo ifunyenwe kunye ne-polycrystalline ye-upcrystalline ye-phenomena kunye nento elahlekileyo ye-Delectric kunye nento elahlekileyo ye-plaritric Asces, kuba izinto zokuthambisa ziya kuvela kule meko kwaye zinokwenza nditsho ndinyibilika. Kwelinye icala, i-PVDF inokunyibilikiswa ngokulula nge-radiofrequency okanye imfuyo ye-electrolyte, kwaye eli nqaku lisetyenziswa kwiinkqubo ezithile okanye uqhagamshelo. I-Inde-Arradiation ye-IPRDURE CRDDF, ngaloo ndlela yandisa amandla ayo okulawula. Le ndawo ikwahlukile kwiPolyoolefin Polymers, njengoko ezinye iipolyrsmers ichithe xa zivezwa kukuhluthwa kwamandla amakhulu.

(3) Ipropathi yekhemikhali

I-PVDF ikwanazo iipropathi ezigqwesileyo kwaye ixhathise uninzi lwe-inorganic acid, iziseko ezibuthathaka, ii-halogens kunye neearhente ze-oxidic kunye ne-Aliipatic kunye ne-Aliiphtic machie kunye ne-chlorided complets kunye nezinyibilikisi ze-alivice. Nangona kunjalo, iziseko ezomeleleyo, ama-amines, ii-esters kunye neeKetones zinokubangela i-pvdf yokudumba, ithambile okanye inyibilike ixhomekeke kwiimeko. Ezinye ze-Esters kunye neeKetones zingasetyenziswa njengamacebo e-co-izicombululo zokunyibilikisa i-PVDF. Inkqubo enjalo ivumela ukuqeqeshelwa kwe-molten ukunyibilika njengoko iqondo lobushushu liyaphuma, kukhokelela kwisilisa.

I-PVDF yenye yeempawu ezimbalwa ze-crystalline ezihambelana nezinye iipolymers, ngakumbi i-Acrilic kunye ne-metacrycs. Ifom ye-crystalline, iipropathi kunye nokusebenza kwezi mpazamo ezidibeneyo zixhomekeke kwisakhiwo kunye nokwenziwa kweepolimes ezongeziweyo, kunye nokwenziwa kwe-PVDF. Umzekelo, i-yestyy polyacrylates iphosakele ngokupheleleyo nge-pvdf, ngelixa i-Iyopropyl Polylyrylates kunye neembeko zayo azikho. Xa ukhetha umdlalo, kubalulekile ukuba nefuthe elinamandla lokufumana i-PVDF, ngelixa i-Polyvinyl Fluoride ihambelana ne-polyvinynene fluoride fluoride flooride.