I. Natural rɔba .

Wata absɔpshɔn: Di wata absɔpshɔn fɔ natura rɔba kin difrɛn wit di kɔagulɛshɔn kɔnsɛntreshɔn fɔ lɛtɛks, di kayn prɛzɛvɛtiv ɛn kɔagulant, was prɛshɔn ɛn drɛy kɔndishɔn dɛn na di rɔba mek prɔses, so i klia difrɛns dɛn na di wata absɔpshɔn fɔ difrɛn kayn prɔdak dɛn.

II. Styrene butadiene rubber .

Wata absɔpshɔn: Semweso lɛk natura rɔba.

III. Butadiene raba di roba .

Lɔw wata absɔpshɔn: Di wata absɔpshɔn fɔ butadiene rɔba smɔl pas di wan fɔ styrene butadiene rɔba ɛn natura rɔba, we kin mek butadiene rɔba we dɛn kin yuz fɔ insulin ilɛktrik waya ɛn ɔda rɔba prɔdak dɛn we nid wata resistans.

IV. Butyl rɔba .

Butyl rɔba gɛt rili lɔw wata permeabiliti, fayn fayn wata rɛsistɛns in jenɛral tɛmpracha, ɛn di wata absɔpshɔn rit na rum tɛmpracha na 10-15 tɛm smɔl pas ɔda rɔba dɛn. Dis fayn fayn pefɔmɛns fɔ butyl rɔba na impɔtant kɔntribyushɔn to ilɛktrik insuleshɔn. Butyl rubber reinforced wit carbon blak en vulcanized wit resin kin get low wata absorpshon pefomans anda hai temperecha en long taim exposure kondishon. Fɔ mek dɛn ebul fɔ mek Butyl rɔba go na wata ɔ ay tɛmpracha fɔ lɔng tɛm, dɛn fɔ tink bɔt dɛn tin ya insay prinsipul:

1, di fil fɔ bi nɔ-haydrofil ɛn mɛta-ilɛktrɔlaytik.

2, di wata-sɔlt tin dɛn we de na di vulkanizashɔn sistɛm fɔ smɔl as i pɔsibul .

3、 Di selected reinforcing filler ɛn vulcanization kondishɔn fɔ mek di vulcanized rɔba gɛt ay elastik modulus ɛn ɔda fizik prɔpati.

V. Ethylene propylene raba .

Hot wata ɛn wata vaypa rɛsistɛns. Ethylene propylene rubber gɛt bɛtɛ stim rɛsistɛns, ivin bɛtɛ pas in ɔt rɛsistɛns. I ay-prɛshɔn stim rɛsistɛns bɛtɛ pas butyl rɔba ɛn jenɛral rɔba. Ethylene propylene rubber tu get beta resistans to hot wata, bot e klos rilet to di vulcanization sistem we dem yuz. Di yus ɔf pεrכksayd ɛn ifektiv vulkanizεshכn sistεm כf εtilen prכpylin rכba vulkanizεshכn rכba pεrכksayd pεrformεns bεtε pas di sכlfa vulkanizεshכn כf εtilen prכpylin rכba כ butyl rכba, bכt di sכlfa vulkanizεshכn כf εtilen prכpylin rכba vulkεnizεshכn rכba pεrכkεdεns כf bכtyl rכba vulkεns כf bכtyl rכba vεlkכnizεshכn כf bכtyl rכba vεlkכnizεshכn כf bכtyl rכba.

Vi. Neoprene raba .

Wata resistans bɛtɛ pas ɔda sintetik rɔba, gas taytnɛs na sɛkɔn to butyl rɔba.

Pripia fɔ neoprene wata-rɛsistant rɔba, fɔ pe atɛnshɔn to di choice fɔ vulcanization sistem ɛn filla. Vulcanization system na di bɛst fɔ yuz lida ɔksayd sistem, avɔyd fɔ yuz magnɛsiɔm ɔksayd, zink ɔksayd sistɛm. Lid ɔksayd doz insay 20 pat ɔ smɔl pas dat, wan wok de fɔ mek di wata nɔ go fayn, bɔt di doz tu bɔku bɔt i nɔ de wok. We yu de yuz lid sɔlfayd, di bɛst we fɔ pik di fil riinfɔsmɛnt kabɔn blak, kabɔn blak na di slot mɛtɔd kabɔn blak na bɛtɛ, di ɔfna mɛtɔd kabɔn blak na sɛkɔn. Inɔgɛnɛk fil na di bɛst fɔ yuz kalsiɔm silikɛt, dɔn dɛn nɔ fɔ yuz bariɔm sɔlfɛt, kle, ɛn ɔda tin dɛn ɔl di haydrofil ɛjɛn dɛn nɔ fɔ yuz. Dɔn bak nɔ fɔ yuz sɔlfɔ vulkanizashɔn. Wata-resistant rɔba skɔch pefɔmɛns jɔs de po, dɛn fɔ notis we dɛn de prosɛs.

VII we de na di wɔl. Nitrile raba .

Wata resistans gud: Wit di inkris of akrilonitrile kontent, wata resistans de kam wos.

VIII na di wɔl. Silikɔn rɔba .

Hydrophobicity: Di surface energy of silikon rubber de low pas most organic materials, so, i get low moisture absorption, long-tem immersion in wata, in wata absorpshon ret na onli lek 1%, fisikal en mechanical propati dem no de go dong, mold resistance na gud.

IX we de na di wɔl. Fluorine raba .

Stebul pefɔmans fɔ ɔt wata. Na fayn fayn resistans de to ay tempɔret stim.

Fluorine rubber pan di rol we hot wata stebiliti de ple, nɔto jɔs dipen pan di kayn we aw di raw rɔba insɛf de, bɔt i de disayd bak bay di rɔba matirial wit. Fɔ fluorine rɔba, dis pefɔmɛns dipen mɔ pan in vulkanizashɔn sistɛm. Peroxide vulcanization sistem bɛtɛ pas amin, bisphenol AF tayp vulkanizashɔn sistem. 26 Tayp fluoroelastomer we yu de yuz amin vulkanizashɔn sistem rɔba pefɔmɛns wɔs pas di jenɛral sintetik rɔba lɛk ɛtilin prɔpyulin rɔba, butyl rɔba. G-tayp fluorine rubber we de yuz peroxide vulcanization system, di kros-link bond dεm fכ di vulcanized rכba pas amin, bisphenol AF tayp vulcanized rכba kros-link bond to haydrolis stebiliti bεtε.

X. Polyuretin .

Wan pan di fayn fayn wikɛd tin dɛm we de na polyurethane: po haydrolis resistans, mɔ we di tɛmpracha smɔl ɔ di prɛzɛns fɔ asid ɛn alkali midia haydrolis kwik kwik wan.

Xi we de na di xi. Klɔrin ɛtɛr rɔba .

Homopolymerized chloroether rubber ɛn nitrile rubber gɛt di sem kayn wata resistans, kɔpolimayz kloroɛta rɔba wata resistans bitwin nitrile rɔba ɛn akrilɛt rɔba. Fɔmyuleshɔn gɛt big impak pan wata rɛsistɛns, we gɛt PB3O4 rɔba wata rɛsistɛns bɛtɛ, we gɛt MGO wata rɛsistɛns we rili wɔs, impruv di digri we di vulkanizashɔn kin mek wata rɛsistɛns bɛtɛ.

XII. Klorosulfonat polietilen raba .

Krɔs-link klorosulfonated polyethylene rɔba wit epoxy resin ɔ mɔ pas 20 pat pan lid monoksayd kin mek di vulcanized rɔba gɛt gud wata resistans. Di filla we dɛn yuz in ad pan di kalsiɔm kabɔnɛt, ɔdinari fil fɔ prɛsipit bariɔm sɔlfɛt, had kle ɛn tɛmral krak kabɔn blak na mɔ fit. Apat frɔm dat, fɔ mek di vulcanized rɔba gɛt gud wata resistans, klos vulkanizashɔn rili impɔtant.

Fɔ intamitɛnt ɛksplɔshɔn insay wata ɔ shɔt tɛm ɛksplɔshɔn prɔdak dɛm, jɔs lɛk ɔl ɔda bariɔm ɔksayd as vulkanizing ɛjɛn, lɛk insay di klorosulfonated polyethylene rɔba wit lɛk 5 pat pan silikon ɔyl, dɔn krɔs-link wit magnɛsiɔm ɔksayd vulkanizashɔn rɔba insay di wata swelin rit bak smɔl.

XIII, na di 1999. Akrilet rɔba .

Bikɔs di ester grup izi fɔ haydrolayz, mek akrilɛt rɔba insay wata swel rit na big wan, BA tayp rɔba insay 100 ° bɔyl wata afta 72h wet geyn we na 15-25%, volyum ɛkspɛnshɔn na 17-27%, stim rɛsistɛns na wɔs