Tlhaloso e Pharalletseng ka PVA Fiber

Ke eng pva fiber?

Fiber ea joala ea polyvinyl (PVA fiber) ke mofuta oa fiber ea maiketsetso e entsoeng ka joala ba boleng bo holimo ba polyvinyl (PVA) ka tekanyo e phahameng ea polymerization e le lisebelisoa tse tala le theknoloji e khethehileng e tsoetseng pele.

Some litšobotsi tsa faeba matla a phahameng matlafatsoa lightweight aggregate konkreite!

Polyvinyl alcohol fiber e khetholloa haholo-holo ka matla a phahameng, modulus e phahameng, bolelele bo tlase, apara khanyetso, ho hanyetsa acid le alkali, ho hanyetsa boemo ba leholimo bo botle, le samente, gypsum le lisebelisoa tse ling tsa motheo tse nang le kamano e ntle le e tlamang, le e seng chefo, e hlokang tshilafalo, ho se senye letlalo la motho, e hlokang kotsi mmeleng wa motho, e leng e 'ngoe ea moloko o mocha oa thepa ea kaho e tala ea theknoloji e phahameng. Pva ke mofuta oa polymer e phahameng e qhibilihang ka metsing, eo thepa ya yona e leng pakeng tsa polasetiki le rabara. China ke mohlahisi e moholo ka ho fetisisa lefatšeng oa joala ba polyvinyl, e lateloe ke Japane, United Kingdom le Korea Leboea.

Ke eng e tlhaho le ho lokisetsa fiber ea PVA?

Boima bo tloaelehileng ba limolek'hule tsa thepa e tala bakeng sa fiber ea pva ke 60000 ~ 150000. Mocheso oa ho bola oa mocheso ke 200 ~ 220 ℃, 'me ntlha ea ho qhibiliha ke 225 ~ 230 ℃. Likhoele tsa joala tsa polyvinyl li ka lokisoa ka ho ohla metsi kapa ho omella. Likhoele tse hlophisitsoeng tsa polyvinyl li ne li lokisoa ka kalafo ea acetal ea likhoele tsa joala tsa polyvinyl tse nang le mocheso. Ts'ebetso ea acetalization ke ts'ebetso eo ho eona tow e hlatsuoang ho tlosa sodium sulfate ebe e fetisoa ka tharollo ea aldehyde. (e entsoeng ka formaldehyde, metsi a hlapollang, sulfuric acid ea catalyst le sodium sulfate, sethibela ho ruruha) ebe kea hlatsoa. Sehupa se ka boela sa khaoloa ho ba likhoele tse tloaelehileng, tse tsamaisoang ka sefofane ho ya mochining wa kamora ho sebetsa, 'me joale acylation e etsoa ka letlooa la tšepe e sa hloekang. E le ho ntlafatsa thepa ea fiber, tharollo ea joala ea polyvinyl e nang le boric acid, ntho e kopanyang, e ka ohiwa ka metsi, 'me fiber ea mantlha e tiisitsoe ka ho hlapa ha alkaline coagulation. Ka mor'a neutralization, ho hlatsoa, methati e mengata e phahameng ea tsitsipano le kalafo ea mocheso, khoele e nang le matla a 106 ~ 115cN/dtex e ka fumanoa.

Melemo ea PVA fiber ke efe??

1. PVA fiber e na le thepa e ntle ea mochini, matla a phahameng, modulus e phahameng, tlase elongation.

2. PVA fiber e na le acid e matla le khanyetso ea alkali le khanyetso ea lik'hemik'hale.

3. PVA fiber e na le khanyetso e khanyang: tekanyo ea tahlehelo ea matla a fiber e tlaase tlas'a letsatsi le lelelele.

4. PVA fiber e na le khanyetso ea kutu: fiber e ka patoa fatše nako e telele ntle le hlobo, bola, tšoele.

5. PVA fiber e na le phallo e ntle: fiber ha e khomarele, phallo e ntle metsing.

6. Fiber le samente, polasetiki le tse ling li na le kamano e ntle, mme e ka tlangwa ka matla.

7. PVA fiber ha e chefo ebile ha e kotsi 'meleng le tikolohong ea motho.

Eng e ka PVA fiber sebelisoa bakeng sa?

Pva fiber e ka sebelisoa ho etsa seile, lesela le sa keneleng metsi, lesela la khatiso, lebanta la ho tsamaisa, thepa ea ho paka, liaparo tsa mosebetsi, letlooa la ho tšoasa litlhapi le thapo bakeng sa mosebetsi oa leoatleng. Fiber e phahameng e matlafalitsoeng ka konkreite e bobebe pva modulus ea elasticity e ka sebelisoa e le thepa ea foreimi ea lebanta la lipalangoang., lesela la liphaephe tse fapaneng tsa rabara, lesela la rabara le lieta tsa rabara, hape e ka sebelisoa ho etsa khoele ea thaere. Hobane mofuta ona oa fiber o khona ho mamella alkalinity ea samente, mme tlamo le kamano ya samente e ntle, e ka nkang sebaka sa asbestos ho etsa thepa e matlafatsang ea sehlahisoa sa samente. E ka kopanngoa le k'hothone ho etsa mefuta eohle ea liaparo le thepa ea ka hare, le ho hlahisa knitwear. Empa ho hanyetsa mocheso ho fokola, lesela ha le bohlasoa, 'me e ke ke ea hlatsuoa ka metsi a chesang. Holim'a moo, e na le thuso ho bao e seng – masela a lohiloeng, pampiri le likarolo tse ling.