DuPont ayɛ fluoroelastomer yie na wɔde ahyɛ mfiridwuma mu wɔ 1950 mfeɛ no mfimfini bɛboro mfeɛ aduosia. Ɛwɔ ngo a ɛko tia yiye, ɔhyew a ɛkorɔn, acid a wɔahyɛ no den, alkali a ɛko tia, mframa a ɛko tia, nsɛe a ɛko tia, oxidant a ano yɛ den, nnuru a ɛko tia denneennen, gas a ɛyɛ den yiye, honam fam ne mfiridwuma mu su pa, ne anyinam ahoɔden a ɛbɔ ho ban, nhyɛso a ɛba fam ne deformation a ɛtra hɔ daa. Sɛ́ rɔba titiriw a wɔayɛ no, wɔde di dwuma kɛse wɔ nnuruyɛ adwuma, ahunmu, kar, petroleum adwumayɛbea, mfiri, ɛlɛtrɔnik ne nnwuma afoforo mu. Fluorine rɔba wɔ adwumayɛ a ɛkyɛn so ne anidaso a ɛtrɛw sɛ wɔde bedi dwuma. Wɔde China fluoroether rɔba a ɛyɛ hyew a ɛba fam a wɔde wɔn ho ayɛ no adi dwuma yiye wɔ Long March series of launch vehicle servo mechanism seals a wɔyɛ mu, na wɔaboaboa ano nso wɔ wimhyɛn a wɔko mu, tank foforo a ɛwɔ ngo paipu no so, anyinam ahoɔden circuit sheathing ne nneɛma afoforo a wɔde boa. Wɔ ɔmanfo a wɔde di dwuma ma kar afã horow mu no, ɛkɔ soro da biara da, wɔ mfiridwuma mu no, wɔde nkakrankakra hyɛ fluorine rɔba a wɔde di dwuma ho nkuran.
Ɛwom sɛ fluorine rɔba tumi gyina nsɛm ho amanneɛbɔ ne ɔhyew a ɛkɔ soro ano yiye sɛnea yɛaka wɔ atifi hɔ no de, nanso nneɛma bi a ɛnteɛ ne nsɛnnennen wɔ ɔkwan a wɔfa so yɛ fluorine rɔba nneɛma ho adwuma na wɔyɛ no mu, a nea ɛtaa ba no bi ne nneɛma a awuwu a wɔhyew bere a wɔde fra, rollers a ɛyɛ nnam a wɔabue mu a wɔde tew ho, ɛtɔ mmere bi a wohu nsensanee fitaa nketewa bere a wɔretwitwa na wɔahwɛ bere a wɔayi sini no adi awie no, nneɛma no yɛ mmerɛw sɛ wobenya tetew, shrink na mpaapaemu, hyew anoano, ɛwɔ traces wɔ nkwaa, enni rɔba, product deformation, aniberesɛm nkuku staining ne nneɛma afoforo, a ɛka ade no su. Ɛka nneɛma a wɔyɛ no yiyedi.
Wɔ atifi hɔ nsɛm a ɛnteɛ a ɛwɔ adeyɛ no mu ho mmuaema mu no, wɔyɛɛ ano aduru a edidi so yi.
Point 1. Fluorine rɔba a wɔadi afra a awu
Nea enti a nneɛma a wɔde yɛ rɔba no di nkitaho ne sulfur kɔkɔɔ anaa sulfur kɔkɔɔ nneɛma, nnwuma pii nni afiri titiriw bi a wɔde tew fluorine rɔba ho, mpɛn pii no ɛho tew sulfur kɔkɔɔ rɔba nneɛma afoforo, ahotew nni hɔ, anaasɛ nneɛma a wɔde sulfur kɔkɔɔ anaa nsu agu fĩ wɔ akwanhyia mu, sɛnea ɛbɛyɛ a wobetumi de afra fluorine rɔba promoter a ɛnam scorching so, anaasɛ dwuma a nsu di ma fluorine rɔba no ani activation decomposition. Ano aduru, afiri titiriw a eye sen biara, sɛ ɛnte saa a, ɛsɛ sɛ ɛyɛ nso wɔ nsakrae a fluorine rɔba ansa na refining, ɛsɛ sɛ koraa tew baffle mprɛte ne ade mprɛte, koraa kwati contact ne nsu ne sulfur kɔkɔɔ, ingredients application nnwinnade soronko, ade bi a spoon, na asiw cross-contamination. Fa calcium hydroxide ne magnesium oxide sie na woasiesie wo ho sɛ wode bedi dwuma.
Point 2. Adeyɛ a ɛfa roller a ɛyɛ nnam ho
Titiriw wɔ afrafra kwan so wɔ afiri a wobue no so no, rɔba ade a wɔakyekyere no denneennen wɔ akyi roller no mu, anaasɛ bere koro no ara mu no wɔakyekyere no ansa na rollers abien no aba ne akyi, a ɛde kan rɔba ade no ntumi dan refining, na nea etwa to no ne ade a wɔde aka ho no yɛ mmerɛw sɛ wɔbɛmia no ayɛ no flakes na ahwe ase, na ɛde apete a ɛnteɛ ba. Ade titiriw nti a fluorine rɔba ade no bata rollers no ho ne Menny a ɛba fam anaasɛ fluorine rɔba mu molecule a ɛba fam. Ɔhaw yi ano aduru ne sɛ wobɛpaw rɔba a wɔannoa a ne mu duru bɛyɛ 70, na wode rɔba a wɔannoa a ne molecule mu duru nkyekyɛmu teateaa adi dwuma, na afei wode Brazil wax anaa fluorine wax anaa polyethylene a emu duru sua kakraa bi ahyɛ aduru no mu, na ɛno nso betumi adi sticky roller phenomenon no ho dwuma.
Point 3. Ɛfa nsensanee fitaa nketewa a ɛwɔ compounding rubber no mu ho
Ɛyɛ esiane sɛ ebinom powder apete fluorine rɔba compounding agent no nyɛ pɛ, anaasɛ esiane powder nsu caking, te sɛ acid absorbers calcium hydroxide, magnesium oxide ne diatomaceous asase, barium sulfate, ne nea ɛkeka ho, ano aduru no, de siw compounding agent no nsuo ano na ɛhyɛ thin pass adeyɛ no mu den.
Point 4. Ɛnyɛ den sɛ wobɛtetew ade no mu
Nea ɛde ba, betumi ayɛ burr a ɛyɛ den dodo, trimming bere a ɛtetew, anaasɛ nkuku ne tight dodo, fi nkuku no mu burr afã horow no abata nkuku no mu, ɛnyɛ den fi ade no ne burr ansa na atetew, ahoɔden a ɛnteɛ bere a worefi ase nkuku no, ɛnyɛ den sɛ wobɛtetew ade no mu. Ɛtɔ mmere bi a, nkuku no mu nneɛma a wɔyɛ no yɛ basabasa, anaasɛ ade a wɔde nkata so no bata nkuku no ho, na sɛ wɔyɛ vulcanization no wie a, ɛma ɛyɛ den sɛ wobeyi nkuku no na atetew ade no mu ntɛmntɛm. Nea ɛka ho no, vulcanization hyew no yɛ kɛse dodo, na ɛno nso bɛma nneɛma no ayɛ mmerɛw na ɛnyɛ den sɛ wɔbɛtetew mu. Wɔ atifi hɔ abnormality no, wobetumi adi ho dwuma afi afã horow a edidi so yi mu: ɛsɛ sɛ mold processing precision yɛ papa cavity roughness Ra nnu 0.8, ɛnsɛ sɛ fit gap no yɛ kɛse dodo, vulcanization temperature control a wogyaw wɔ 170 degrees ntam no ye, na ɛsɛ sɛ rubber ade no mu duru yɛ pɛpɛɛpɛ.
Point 5. Shrinkage ne mpaapaemu haw
Ɛyɛ nea efi nhyɛso a woyi fi hɔ bere a wɔabue nkuku no, fluorine rɔba no shrinkage, na burr fã no abata nkuku no mu a ɔfasu no wɔ ntam, enti wɔ product fã no ne burr no ntam no ma tensile tumi, ma product ne burr no mu paapae, bere a mpaapaemu enclosure no trɛw kɔ product fã no, ɛma shrinkage ne mpaapaemu phenomenon. Ano aduru ne sɛ wobɛtew vulcanization hyew no so sɛnea ɛfata, apaw Menny viscosity wɔ bɛyɛ 70 [ML1+4] 121 degrees, bere a ɛsɛ sɛ mold fit degree no fata, ɛnyɛ nea ɛyɛ hare dodo na ɛyɛ den dodo.
Point 6. Edge te sɛ nea wɔrehyew
Ɛyɛ vulcanization hyew no korɔn dodo, titiriw nneɛma a ɛyɛ den, a ɛfata sɛ wɔtew vulcanization hyew no so betumi adi so nkonim.
Point 7. Nneɛma bi wɔ nkwaa no so
I t yɛ esiane lap fã a adhesive ade no nnyɛ fused koraa bom, anaasɛ esiane adhesive strip no wɔ efĩ anaasɛ ngo fouling, ano aduru ne sɛ wɔbɛma preformed adhesive strip wɔ storage, akwantu, loading glue ho tew, na asiw efĩ ano.
Point 8. Glue a wonni
Ɛne sɛnea nkuku no yɛ ne nsu a gluu no yɛ no wɔ abusuabɔ. Ɛda adi sɛ nkuku a wɔato mu no bɛma gluu nnim sen nkuku a wɔabue mu no. Ano aduru ne sɛ wobɛsesa nsu a ɛwɔ rɔba no mu na woabue tokuru a mframa fa mu wɔ nkuku no mu no.
Point 9. Nneɛma a wɔyɛ no deformation
Ɛyɛ esiane sɛ fluorine rɔba shrinkage rate yɛ kɛse, akyi molding ade no shrinkage anisotropy, coefficient of thermal ntrɛwmu rɔba wɔ akwan horow so yɛ soronko, abien vulcanization nhyehyɛe bɛyɛ foforo cross-linking, titiriw ɔfã bi a vulcanization ase sulfur, abien vulcanization a ade no, kɛse da adi deformation, sɛnea ɛbɛyɛ a ɛbɛma full-linking wɔ bere bi a vulcanization bere, sɛnea ɛbɛyɛ a wɔbɛkwati abien vulcanization a ade no deformation.
Point 10.Mould stain aniberesɛm adeyɛ
Yɛtaa de 26 type fluorine rubber, phenol vulcanization nhyehyɛe, wɔ vulcanization nhyehyɛe no mu no wɔbɛyɛ HF, ɛyɛ acid a ano yɛ den yiye, ɛwɔ corrosive nkɛntɛnso kɛse wɔ nkuku no so, formula a wɔde ka acid absorbent ho ne sɛ wɔbɛtwetwe HF a wɔayɛ no, na wɔasiw efĩ a ɛba nkuku no so. Ano aduru ne sɛ wɔde calcium hydroxide ne magnesium oxide a ɛdɔɔso bedi dwuma sɛnea wɔayɛ no, mpɛn pii no dodow a wɔde ma no yɛ afã 6 ne afã 3, na wobetumi de Brazil wax aka aduru no ho, a ebetumi atu akɔ rɔba no ani bere a wɔreyɛ vulcanization no ma ayɛ sini na amma nsunsu no ansɛe.
Wobetumi de akwan horow adi nneɛma du a ɛtaa ba wɔ fluorine rɔba a wɔyɛ ne ne yɛ mu ho dwuma wɔ atifi hɔ.
