Rubber ke mofuta oa lisebelisoa tse phahameng tsa polymer, tlas'a ketso ea matla a manyenyane a ka ntle, a ka bontša tekanyo e phahameng ea ho senyeha, 'me ka mor'a hore matla a ka ntle a tlosoe, a ka khutlela sebopeho sa eona sa pele. Ka lebaka la elasticity e phahameng ea rabara, e sebelisoa haholo ka cushioning, shockproof, ho tiisa ka matla, joalo-joalo Tšebeliso ea indasteri ea khatiso e kenyelletsa li-roller tse sa tšoaneng tsa rabara le likobo tsa khatiso. Ka tsoelo-pele ea indasteri ea rabara, lihlahisoa tsa rabara li tsoetse pele ho tloha tšebelisong e le 'ngoe ea rabara ea tlhaho ho ea ho mefuta e sa tšoaneng ea li-rabara tsa maiketsetso.
1. Rabara ea tlhaho
Rabara ea tlhaho e laoloa ke li-hydrocarbon tsa rabara (polyisoprene), tse nang le protheine e nyenyane, metsi, li-resin acid, tsoekere le matsoai a sa tloaelehang. Rabara ea tlhaho e na le elasticity e kholo, matla a phahameng a matla, ho hanyetsa ho lla le ho kenya motlakase, ho hanyetsa ho apara hantle le ho hanyetsa komello, ts'ebetso e ntle ea ts'ebetso, rabara ea tlhaho e bonolo ho tlamahanngoa le lisebelisoa tse ling, 'me ts'ebetso ea eona ka kakaretso e molemo ho feta rabara e ngata ea maiketsetso. Mefokolo ea rabara ea tlhaho ke ho hanyetsa oksijene le ozone, ho bonolo ho tsofala le ho senyeha; ho hanyetsa ho futsanehile ha oli le li-solvents, ho hanyetsa ho tlaase ho acid le alkali, khanyetso e tlaase ea kutu; ho hanyetsa mocheso o fokolang. Mocheso oa mocheso o sebetsang oa rabara ea tlhaho: hoo e ka bang -60℃~+80℃. Rabara ea tlhaho e sebelisoa ho etsa lithaere, lieta tsa rabara, liphaephe, litheipi, li-insulating layers le lihata tsa lithapo le likhoele, le lihlahisoa tse ling tse akaretsang. Rabara ea tlhaho e loketse ka ho khetheha bakeng sa ho etsa li-eliminator tsa torsional vibration, li-absorber tsa enjene, litšehetso tsa mochini, likarolo tsa ho emisa tsa rabara, li-diaphragm le lihlahisoa tse bōpiloeng.
2. SBR
SBR ke copolymer ea butadiene le styrene. Ts'ebetso ea rabara ea styrene-butadiene e haufi le ea rabara ea tlhaho, 'me hona joale ke eona tlhahiso e kholo ka ho fetisisa ea rabara e entsoeng ka kakaretso. Litšobotsi tsa rabara ea styrene-butadiene ke hore ho hanyetsa ha eona ho apara, ho hanyetsa botsofali le ho hanyetsa mocheso ho feta rabara ea tlhaho, 'me sebopeho sa eona se tšoana ho feta rabara ea tlhaho. Mefokolo ea rabara ea styrene-butadiene ke: elasticity e tlaase, ho hanyetsa ho futsaneha ha bonolo le ho hanyetsa meokho; ts'ebetso e mpe ea ts'ebetso, haholo-holo ho se itšoarelletse hantle le matla a tlase a rabara e tala. Mocheso oa mocheso oa rabara ea styrene-butadiene: hoo e ka bang -50℃~+100℃. Rabara ea styrene butadiene e sebelisoa haholo ho nkela rabara ea tlhaho sebaka ho etsa lithaere, lishiti tsa rabara, liphaephe, lieta tsa rabara le lihlahisoa tse ling tse akaretsang.
3. Rabara ea Nitrile
Rabara ea Nitrile ke copolymer ea butadiene le acrylonitrile. Rabara ea Nitrile e khetholloa ka ho hanyetsa ha eona hantle ho peterole le oli ea aliphatic hydrocarbon, ea bobeli ho ea ho rabara ea polysulfide, acrylic ester le rabara ea fluorine, ha rabara ea nitrile e phahametse liraba tse ling tse sebelisoang ka kakaretso. Ho hanyetsa mocheso o motle, ho tiisa moea o motle, ho hanyetsa ho apara le ho thibela metsi, le ho khomarela ka matla. Mefokolo ea rabara ea nitrile ke ho hanyetsa serame ho fokolang le ho hanyetsa ozone, matla a fokolang le ho saroloha, ho hanyetsa asiti e fokolang, ho se kenye letsoho ha motlakase, le ho se khone ho thibela metsoako ea polar. Mocheso oa mocheso oa rabara ea nitrile: hoo e ka bang -30℃~+100℃. Rabara ea Nitrile e sebelisoa haholo ho etsa lihlahisoa tse fapaneng tse hananang le oli, joalo ka li-hoses, lihlahisoa tsa ho tiisa, lirolara tsa rabara, jj.
4. Rabara ea nitrile ea haedrojene
Hydrogenated nitrile rabara ke copolymer ea butadiene le acrylonitrile. Rabara ea nitrile ea hydrogenated e fumanoa ka ho tlatsa ka botlalo kapa ka mokhoa o sa fellang li-bond tse peli tse butadiene tsa NBR. Hydrogenated nitrile rabara e khetholloa ka matla a phahameng a mechine le ho hanyetsa ho tsuba, ho hanyetsa mocheso ho molemo ho feta NBR ha e kopane le peroxide, 'me thepa e meng e tšoana le rabara ea nitrile. Bobebe ba rabara ea nitrile ea hydrogenated ke theko ea eona e phahameng. Mofuta oa mocheso oa rabara ea nitrile ea hydrogenated: hoo e ka bang -30℃~+150℃. Rabara ea nitrile e nang le hydrogen e sebelisoa haholo-holo bakeng sa lihlahisoa tse tiisang oli le tse hanyetsanang le mocheso o phahameng.
5. Ethylene propylene rabara
Ethylene propylene rabara ke copolymer ea ethylene le propylene, 'me ka kakaretso e arotsoe ka li-yuan tse peli tsa ethylene propylene rabara le li-yuan tse tharo tsa ethylene propylene rabara. Rabara ea ethylene-propylene e khetholloa ka ho hanyetsa ozone ka tsela e babatsehang, ho hanyetsa mahlaseli a kotsi, ho hanyetsa boemo ba leholimo le ho hanyetsa botsofali, ho behoa pele har'a li-rabara tse sebelisoang ka kakaretso. Ethylene-propylene rabara e na le motlakase o motle, ho hanyetsa lik'hemik'hale, elasticity ea phello, acid le alkali resistance, matla a khoheli a tlaase, 'me e ka sebelisoa bakeng sa ho tlatsa holimo. Ho hanyetsa mocheso ho ka fihla ho 150°C, 'me e hanyetsana le li-solvents tsa polar-ketones, esters, joalo-joalo, empa rabara ea ethylene propylene ha e hanyetsane le li-hydrocarbon tsa aliphatic le li-hydrocarbon tse nkhang hamonate. Lintho tse ling tsa 'mele le tsa mochini tsa rabara ea ethylene propylene li tlase hanyane ho feta rabara ea tlhaho' me li phahametse rabara ea styrene butadiene. Bobebe ba rabara ea ethylene-propylene ke hore ha e na ho itšoarella hantle le ho khomarela, 'me ha ho bonolo ho tlamahanngoa. Mocheso oa mocheso oa rabara ea ethylene propylene: hoo e ka bang -50℃~+150℃. Ethylene-propylene rabara e sebelisoa haholo e le lesela la lisebelisoa tsa lik'hemik'hale, terata le sheathing ea cable, hose ea mouoane, lebanta la conveyor le thibelang mocheso, lihlahisoa tsa rabara ea koloi le lihlahisoa tse ling tsa indasteri.
6. Rabara ea silicone
Rabara ea silicone ke rabara e khethehileng e nang le silicon le liathomo tsa oksijene ka har'a ketane e kholo. Silicon element e bapala karolo e kholo ho rabara ea silicone. Litšobotsi tse ka sehloohong tsa rabara ea silicone ke ho hanyetsa mocheso o phahameng (ho fihlela ho 300°C) le ho hanyetsa mocheso o tlase (ka tlase -100°C). Hajoale ke rabara e ntle ka ho fetisisa e hanyetsanang le mocheso o phahameng; Ka nako e ts'oanang, rabara ea silicone e na le motlakase o motle haholo 'me e tsitsitse ho oxidation ea mocheso le ozone. E hanyetsana haholo ebile e inetse ka lik'hemik'hale. Mefokolo ea rabara ea silicone ke matla a tlaase a mochine, ho hanyetsa oli e fokolang, ho hanyetsa solvent, acid le alkali resistance, ho thata ho vulcanize, le ho bitsa chelete e ngata. Mocheso o sebetsang oa rabara ea silicone: -60℃~+200℃. Rabara ea silicone e sebelisoa haholo-holo ho etsa lihlahisoa tse hanyetsanang le mocheso o phahameng le o tlaase (li-hose, li-seal, joalo-joalo), le terata e sa keneleng mocheso o phahameng le lisebelisoa tsa cable. Hobane ha e na chefo ebile ha e latsoehe, rabara ea silicone e boetse e sebelisoa indastering ea lijo le ea bongaka.
7. Rabara ea polyurethane
Rabara ea polyurethane e na le elastomer e entsoeng ke polymerization ea polyester (kapa polyether) le metsoako ea diisocyanate. Rabara ea polyurethane e khetholloa ke ho hanyetsa hantle ha abrasion, e leng eona e ntle ka ho fetisisa har'a mefuta eohle ea rabara; rabara ea polyurethane e na le matla a phahameng, elasticity e ntle le khanyetso e ntle ea oli. Rabara ea polyurethane e boetse e sebetsa hantle ka ho hanyetsa ozone, ho hanyetsa botsofali le ho tiea ha moea. Mefokolo ea rabara ea polyurethane ke ho hanyetsa mocheso o fokolang, ho fokola ha metsi le alkali ho hanyetsa, le ho se khone ho hanyetsa li-hydrocarbon tse nkhang hamonate, li-hydrocarbon tse chlorine, le metsoako e kang ketone, ester le joala. Mocheso oa tšebeliso ea rabara ea polyurethane: hoo e ka bang -30℃~+80℃. Rabara ea polyurethane e sebelisetsoa ho etsa lithaere haufi le likaroloana, li-gaskets, lihlahisoa tse sa tsitsang, lirolara tsa rabara, le lihlahisoa tsa rabara tse sa senyeheng, tse matla haholo le tse hananang le oli.
Nako ea poso: Jul-07-2021
