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Polyvinyl Alcohol (PVA) - SINOPEC
Piav qhia
Saib xyuas
Qhov txheej txheem suav nrog cov kauj ruam nram qab no: siv ib qho calcium carbide acetylene txoj kev tsim khoom thiab ib qho fixed bed synthesis reactor los tsim vinyl acetate; siv vinyl acetate ua raw material, methanol ua solvent, azobisisobutyronitrile ua initiator, siv free radical solution polymerization mode, thiab siv anhydrous low-alkali belt alcoholysis mode los tsim polyvinyl alcohol; thiab ua crushing, pressing, drying, packaging thiab lwm yam kom tau txais cov khoom.
Txhais Nploog
Lub npe tshuaj: Polyvinyl Alcohol(PVA)
Cov lej hais txog cov molecular: -[CH2CH(OH)]n
Tsis cov xovxwm physical
Kev sov dhos: Polyvinyl alcohol powder yooj siv rau huv nrog dej. Polyvinyl alcohol resin (PVA) uas muaj qhov siab tshaj 95% yooj siv rau huv nrog dej nyob rau ntawm qhov sov ntawm lub hnab, thiab polyvinyl alcohol resin (PVA) uas muaj qhov siab dua 99.5% tu yog huv nrog dej sov siab dua 95℃.
Thermal stability: Polyvinyl alcohol yuav phai thaum ua kom sov, tsis muaj dab tsi hlo li saum 40℃, saum 160℃, nws thaj teeb thaum ua kom sov ntev, thiab ua kom pha ntev dua 220℃ los tsim dej, acetic acid, acetaldehyde thiab crotonaldehyde.
Chemical resistance: PVA tsis raug mob los ntawm qhov khaub no, qhov loog lossis cov solvents organic, thiab nws muaj qhov zoo heev rau khaws duab.
Khaws cia stability: PVA yog ib qho polymer uas muaj qhov viscosity tsawg, nws cov dej ua rau qhov stability zoo heev nyob rau ntawm qhov sov ntawm lub hnab. Cov dej tsis tu ncua thaum khaws cia.
Kev tsim film: Rau qhov kev nyob deb ntawm cov PVA molecules, PVA yog ib yam uas yooj zoo los tsim cov film, cov film uas tsim tau yog daj plaig thiab so, muaj kev ntsuab siab zoo, lub ruag ntawm nruab smooth, tsis ua rau hnyav, muaj kev zoo li cas zoo. Cov film molecular muaj kev zoo li cas zoo, muaj kev zoo li cas zoo ntawm kev tiv thaiv kua, tsis muaj leej twg, tsis muaj kev lag luam thiab kev sau hais zoo.
Lub ntsiab lus kimho
PVA tuaj yeem xav tias yog ib tug polymer linear dai ntawm cov hydroxyl secondary. Cov hydroxyl hauv cov ntawv muaj kev ncaj ncees siab thiab tuaj yeem ua cov kev lag luam kemiko uas zoo li cov alcohols lwm, xws li esterification, etherification, acetalization, thiab lwm yam, thiab kuj tuaj yeem sib dhos nrog ntau yam compounds inorganic lossis organic.
Product Summary
Khoom |
Hydrolysis (mol%) |
Viscosity (mpa.s) |
Volatile (%≤) |
Ash (%≤) |
PH (Nqe) |
086-03 |
85.0-87.0 |
3.4-4.2 |
≤5.0 |
≤0.4 |
5~7 |
088-05 |
87.0-89.0 |
4.5-6.0 |
≤5.0 |
≤0.5 |
5~7 |
098-05 |
98.0-99.0 |
5.0-6.5 |
≤5.0 |
≤0.5 |
5~7 |
088-08 |
87.0-89.0 |
8.0-10.0 |
≤5.0 |
≤0.5 |
5~7 |
098-08 |
98.0-99.0 |
9.0-11.0 |
≤5.0 |
≤0.5 |
5~7 |
088-20 |
87.0-89.0 |
20.5-24.5 |
≤5.0 |
≤0.4 |
5~7 |
092-20 |
91.0-93.0 |
21.0-27.0 |
≤5.0 |
≤0.5 |
5~7 |
094-27 |
94.0-96.0 |
22.0-28.0 |
≤5.0 |
≤0.5 |
5~7 |
096-27 |
96.0-98.0 |
23.0-29.0 |
≤5.0 |
≤0.5 |
5~7 |
100-27 |
99.0-100.0 |
22.0-28.0 |
≤5.0 |
≤0.7 |
5~7 |
088-35 |
87.0-89.0 |
29.0-34.0 |
≤5.0 |
≤0.3 |
5~7 |
092-35 |
91.0-93.0 |
30.0-36.0 |
≤5.0 |
≤0.3 |
5~7 |
100-35 |
99.0-100.0 |
35.0-43.0 |
≤5.0 |
≤0.7 |
5~7 |
088-50 |
87.0-89.0 |
45.0-55.0 |
≤5.0 |
≤0.3 |
5~7 |
098-60 |
98.0-99.0 |
58.0-68.0 |
≤5.0 |
≤0.5 |
5~7 |
100-60 |
99.0-100.0 |
58.0-68.0 |
≤5.0 |
≤0.7 |
5~7 |
100-70 |
99.0-100.0 |
68.0-78.0 |
≤5.0 |
≤0.7 |
5~7 |
Tawv Tshaj Txhais
Cov txog xyoo
Alcohol Polyvinyl hauv kev ncaj ncees tuaj yeem ua raws li qhov kev pab tiv thaiv, sib txuas zoo thiab ua rau yooj yim dua. Nws cov nuj nqo ua haujlwm yog tiv thaiv kho mob, sib txuas zoo thiab ua rau yooj yim dua, thiab nws yog ib qho tsim nyog rau cellulose substrates.
Tsis lawm
Alcohol Polyvinyl tau ua rau muaj "kev nthuav dav" hauv cov roj ntxuav los ntawm 4 qhov: film-forming reinforcement, interface bonding, kev lag luam thiab kev kho tshuaj nrog. Qhov tseeb ntawm nws yog qhov zoo ua ke ntawm kev ceev thiab kev ua kom zoo (ua kom zoo dua qhov ua kom tsis txawv thiab sib txuas), kev ua kom haum (xav txog ob peb yam xaus thiab kev ua kom sov), thiab kev tiv thaiv kho mob thiab kev ua kom yooj yim (tsis lom neeg, ua kom raug, thiab khawm emulsion). Cov lej yuav tsum tau pom nrog lub sijhawm.
Processing Daim Ntawv
Nyog kev tsim kho ntawv, cov polyvinyl alcohol yog ib qho khoom siv zoo heev uas tuaj yeem pab huvav kom zoo dua thiab ua haujlwm zoo dua los ntawm kev ua nrog tib lub zog ntawm "qeeb pov ntawv-kev nyob rau hauv-sib txuas ntawv". Nws muaj peev xwm zoo heev hauv kev huvav, kev sau ntawv, kev tiv thaiv dej thiab kev saib xyuas pob ze, thiab tseem yog ib yam uas tsis muaj leej twg hnav tau hauv kev tsim kho ntawv zoo thiab ntawv ua haujlwm siab.
Kev Ncav Duab Pov
Polyvinyl alcohol raug siv los ntawm ib qho ua pov kom zoo dua kom pov zoo dua thiab kom tsis hnov mob, kom tsawg tus pov breaking hauv kev tsim kho, thiab pab kom zoo dua hauv kev tsim kho lwm yam.
Cov pob
20 kg/ib, 25 kg/ib.
Khaws
Khaws rau hauv qhov chaw qhuav, zoo-ventilated ntawm chav tsev kub 5-30 ℃. Tsis txhob mus ze qhov chaw kub, tiv thaiv cov av noo, tsis txhob raug tshav ntuj. Nws yog txwv tsis pub khaws cia ua ke nrog cov tshuaj volatile los tiv thaiv adsorption deterioration.
Tus Txheej Nyob
Tsis ntawv PVA mus tsev rau hauj ntsiab thiab txheej nyob rau tsis npaug, yog cov tsis ntawv lub npe, lub tebchaw, lub tsib, cov xovxwm ntaub, cov lwm tshaj, thiab npe thiab tsis ntawm cov lub npe thiab tsis muaj.
Thauj
Cov PVA products yog peb niam noj hais tawm rau lwm transport vehicles qhov nyob ntawd. Thiaj muaj moisture, rain thiab sun. Txog lawv li cas li, thiaj muaj scratching thiab breaking package.
