EN
Polyvinyl Alcohol (PVA) -SINOPEC SUNDY
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
Kev ceev yis: 0.4-0.5 g/ml
Kev ua haujlwm tshwj xeeb
Kev sov dhos:
Nws tuaj yeem sib kis rau hauv dej, lub ntsiab lus sov dhos ntawm dej. Kev sov dhos ntawm nws yog qhov tshwj xeeb heev los ntawm qhov siab thiab qhov chaw uas nws tau ua los. Tom qab qhov chaw uas nws tau ua los txo, qhov kev sov dhos ntawm dej txo thiab qhov kub txias ntawm kev sov dhos kuj txo li cas. Qhov kev sov dhos zoo tshaj plaws yog thaum qhov chaw uas nws tau ua los yog 88%. PVA tuaj yeem sib kis rau hauv cov teeb meem uas muaj peev xwm (glycerol, ethylene glycol, acetic acid, acetaldehyde, thiab lwm yam), tab sis nws nyuaj rau ua kom haum, tsis sov dhos rau hauv cov teeb meem organic feem plooj thiab cov meej ua ntej (H 2SO 4, HCl, etc.)
Kev ua haujlwm ua lub ntim:
Lub ntsiab lus PVA sov dhos ntawm dej yog qhov nyuaj rau ua lub ntim, lub ntim uas tau ua yog daj plaub thiab sov dhos, muaj kev nce mus siab zoo, thiab muaj lub ruag hlau uas tsis muaj kev phom sij. Lub ntim tuaj yeem tiv thaiv dej vapor, tab sis qhov ntim hydrogen, oxygen, carbon dioxide thiab lwm yam khí ntawm nws yog qhov luv, thiab qhov kub txias ntawm qhov chaw uas nws nyob yog qhov tsawg heev.
Kev ua haujlwm ua ke:
PVA yuav tsum siv cov lus qhia tawm los ntawm kev ua haujlwm nrog cov roj fiber, ntawv xya, ntawv thiab lwm yam ntawm qhov chaw zoo li no uas muaj kev nyob deb.
Miscibility:
PVA thiab starch, gum, synthetic resin, cellulose derivatives thiab cov lus siv huv ua ntau yam khoom siv los ntawm cov surfactants tuaj yeem raug sau mus thiab muaj kev nyob deb zoo.
Chemical resistance:
Nyob rau qhov tseeb, PVA pH value ntawm qhov tawm los yog feem ntau yog 5-7, kev ua siab tsis txawv, feem ntau tsis pahees los ntawm qhov yooj yim, qhov loj lossis organic solvent (ester, ketone, higher alcohol, hydrocarbon), kev tiv thaiv roj muaj ntau heev, tab sis yuav tsum raug decomposed los ntawm cov peroxide xws li H 2O 2.
Heat resistance:
PVA yog qhov ua rau ntauv los ntawm kev ntxuav. Thaum nws tau txiav rau 130~140℃, nws cov nyob zoo feem ntau tsis hlo li cas, cev xwb tus leej yeeb hlo mus rau kab. Ntau dua 160℃ rau ntev yuav ua rau tus leej yeeb ntxhov dav. Rau 200℃, kev saib xyuas hauv ib lub molecular thiab kev tiv thaiv huv hlo liab diminutive. Nyob rau qhov kub si 200℃, kev saib xyuas hauv ib lub molecular pom. Txog 300℃, yuav tig tag nrho mus rau hauv dej, vinegar, acetaldehyde thiab crotonaldehyde (ntawm qhov kua ntim ntim tsis muaj kev phom sij).
Color rendering:
PVA tuaj yeem pab lub dye Congo red, iodine, copper hydroxide, boric acid thiab tshuaj los ntawm kev ua molecular adducts, uas tuaj yeem siv los paub qhov desizing thiab cleaning degree thiab xaiv PVA uas muaj cov alcoholysis degree sib txawv.
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
PVA yuav tsum ceev nyob hauv chaw tog, chaw thoob zoo thiab nyob rau hnab phab ntsa 5-30℃. Tsis txhob nyob deb ntawm chaw poob, ceev khaus, hlauv txhiab. Tsis pub ceev nrog cov khoom siv tshuaj uas yuav poob mus kom zoo .
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.
Kev phom sij qhia
Kev phom sij rau kev nyob: Phom sij thaum sib sau rau hauv av, hu rau hauv, lossis tiv tau rau hauv pob, phom sij rau cov ntsej thiab pob.
Kev phom sij rau kev ploj: Qhov khoom no yog khoom ua kom dej ploj thiab phom sij.
Tshaj ntawv qhov tsis muaj
Ke vajtswv rau pob: Nqus tus neeg uas tsis zoo thiab sau rau hauv dej dab tsi.
Ke vajtswv rau cov ntsej: Rhu tawm liab ntawm qhob thiab ntxuav nrog dej sai los yog dej muab siv rau ntxuav thiab nrhiav kev pabcuam kho mob.
Kev hliav mus rau hau hlwb: Tshawb lub teeb pom ntawm av tshiab. Yog tias tsis zoo li cas, sau rau oxygen thiab nrhiav kev pabcuam kho mob.
Kev hnov mus rau hau ceeb: Npaj dej ua npoo kom cuam tshuam thiab nrhiav kev pabcuam kho mob.
Kev tiv thaiv hluav taws
Lijtog zoo siab: Cov roj thiab av tuaj yeem tsim cov khoom sib xyaw uas tuaj yeem poob thaum txog lub zog, nws yuav poob thaum muaj kabmob. Nws yuav tach raws thaum hluav taws kom tsis pub ua rau dej tso kua.
Daim ntawv kom dim tiam: Dej, foam, roj ntsha, carbon dioxide thiab av xan.
