PVC kola, n’o ye nɛgɛ kɛrɛnkɛrɛnnen ye min dilannen don kɛrɛnkɛrɛnnenya la kuloridi polivinili (PVC) fɛnw sirili kama, o nafa tɛ se ka wuli ka bɔ a nɔ na, baara dɔw la i n’a fɔ plastiki fɛnw dilanni, fɛn dilanni masirili, ani iziniw ladonni. A ka fɛɛrɛbɔ cogoyaw bɛ Ye fɔlɔ nin ko ninnu na:
Ni an y’a lajɛ kemikoro siratigɛ la, PVC kola minnu ka ɲi kosɛbɛ, olu bɛ baara kɛ ni furaw ye minnu sinsinnen bɛ furaji- kan walima minnu bɛ se ka kɛ. Fɛn minnu sinsinnen bɛ furaji-fɛnw kan, olu bɛ fɛnɲɛnamafagalanw kɛ i n’a fɔ dikuloromɛtan ni sikloheksanɔn i n’a fɔ u ka matiriyali, ka PVC sanfɛla mɔlikuluw wuli walasa ka tɛmɛsira sɔgɔlen dɔ dilan. Faan wɛrɛ fɛ, nɛgɛ minnu bɛ se ka kɛ fɛn ye, olu bɛ poliyuritan walima akirilati prepolimɛriw sɔrɔ minnu bɛ ɲɔgɔn cɛtigɛ- furakɛli kɛcogo la, ka kɛ sababu ye ka rezo jɔcogo saba-kɛ. O kemikɛli kɛcogo danfaralen in b’a to u bɛ se ka ladamu baarakɛcogo suguya caman na.
Bonding performance siratigɛ la, PVC kola bɛ fɛnw bɛnkan ɲuman jira. Kɔrɔbɔli kunnafoniw b’a jira ko kola minnu bɛ kɛ ni baarakɛminɛnw ye, olu bɛ sɛgɛn fanga jira min ye 5-8 MPa ye ani u sɔgɔli fanga bɛ tɛmɛ 3 N/mm kan PVC kan, o ka ca ni fɛn bɛɛ nɔrɔlan gansanw ka baarakɛcogo ye kosɛbɛ. U ka jisumalan kɛrɛnkɛrɛnnenw dilanni bɛ don joona PVC sanfɛla ka mikroporozɛni cogoya la, ka a to jɛɲɔgɔnya bɛ se ka da a kan hali fɛn nɔgɔlenw walima tulu nɔgɔlenw kan. Fɛn minnu sɛmɛntiyalen don, olu dɔw fana bɛ funteni kunbɛn (u bɛ sabati ka bɔ degere -20 na ka se degere 80 ma ) ani ka se ka kemikɛli kɛ.
Fɛɛrɛko siratigɛ la, bi PVC nɛgɛw ye ɲɛtaa caman sɔrɔ baarakɛcogo ɲuman na. Fɛn minnu bɛ ja joona-, olu ka tack-labila waati ye miniti 3-5 ye, ni furakɛli waati dafalen tɛ tɛmɛ sanga 24 kan. Fura minnu kasa ka dɔgɔn-, olu bɛ VOC hakɛ to 50g/L duguma, ka kɛɲɛ ni EU REACH sariyaw ye. Walasa ka PVC pipe walima profil minnu kogow ka bon-, olu sirili la, tixotropic adhesives (thixotropic adhesives) dilannen don. Nano-thickeners (nano-thickeners) farali bɛ kɛ sababu ye ka baara kɛ cogo tigitigi la, min ɲɛsinnen bɛ a ma, wa a bɛ jibɔbaliya bali.
A nafa ka bon k’a dɔn ko PVC nɔrɔlan sugandili ka kan ka bɛn kosɛbɛ a kɛcogo kɛrɛnkɛrɛnnen ma. Solvent-nɔgɔlanw ni sosɛti-ani-spigot joint processus bɛ ladilikan di walasa ka PVC pipe gɛlɛnw fara ɲɔgɔn kan, ka sɔrɔ elastomer-nɔgɔlan caman sɛmɛntiyalenw de ka fisa walasa ka filimu nɔgɔlenw siri. Ni sigida lakanani wajibiyalenw bɛ ka caya, ji-PVC nɔrɔlanw bɛ ka kɛ ɲinini ni yiriwali yɔrɔ duman ye. Ji-poliyuritani jɛnsɛnniw donli bɛ dɔ bɔ kosɛbɛ sigida la ka sɔrɔ ka jɛɲɔgɔnya fanga mara.
Sisan fɛɛrɛko yiriwaliw b’a jira ko PVC nɔrɔ hakilitigiw (i n’a fɔ funteni-sensitive curing ani UV-triggered crosslinking) bɛ ka ɲɛtaa sɔrɔ laboratuwari kɔnɔ, wa u bɛ se ka PVC fɛnw lajɛcogo bila ka taa a fɛ ka baara kɛ ka ɲɛ ani ka kɛ fɛn ye min bɛ se ka kɛ ka ɲɛ. O fɛɛrɛ kura ninnu bɛ ka taa a fɛ ka PVC nɛgɛw jɔyɔrɔ nafama sabati plastiki dilanni na.