Kamano pakeng tsa boleng ba fiber le thepa ea fiberboard

 

 

(1) Kamano pakeng tsa fiber morphology le boleng ba sehlahisoa

 

Mabapi le sebopeho sa tlhaho sa fiber, ho na le phapang e kholo lipakeng tsa lisebelisoa tse fapaneng tse tala.Ka mohlala, ka karolelano bolelele ba fiber tracheids ea lehong la coniferous ke 2-3 mm, 'me karolelano ea likarolo ke 63-110;bolelele bo bolelele ba li-fiber tracheids le likhoele tse thata tsa lehong tse nang le makhasi a sephara ke 0.8-1.3 mm, 'me karolelano ea likarolo ke 35-110 58;ha e le lisebelisoa tse tala tsa joang, bolelele bo bolelele ba li-fiber tracheids ke 0.8-2.2 mm feela, karolelano ea likarolo ke 30-130, 'me litaba tsa lisele tse se nang fiber li batla li phahame.

 

Ho latela pono ea bolelele ba fiber le karo-karolelano ea likarolo, ho bonahala eka fiberboard e entsoeng ka likhoele tsa softwood e betere.Leha ho le joalo, ho ipakile hore ts'ebetso ea fiberboard e hatelletsoeng ke lisebelisoa tsohle tsa coniferous ha se hakaalo hore e molemo ka ho fetisisa.Lebaka ke hore botenya ba fiber tracheids ea thepa ea coniferous ke tubular, 'me botenya ba lerako la sele bo batla bo le boholo ho feta bophara ba likhoele.Kakaretso ea sebaka sa ho ikopanya e ba nyane.Ho fapana le hoo, likhoele tsa likhoele, likhoele tse thata tsa lehong, le likotopo tsa lehong le makhasi a sephara li na le marako a masesaane ebile li entsoe ka sebopeho sa mabanta, e le hore sebaka sa ho kopana pakeng tsa likhoele se be seholo, le thepa ea ho loha e ntle.Sehlahisoa sa fiberboard se nang le sekhahla se phahameng le matla.

 

Matla a tlhaho a fiber ka boeona a boetse a na le tšusumetso e itseng ho matla a sehlahisoa sa fiberboard.Motho e mong o kile a sebelisa mokhoa oa ho daea ho fetisa liteko tsa ho kobeha le ho tsitlella ho hloleha ha fiberboard e thata, mme a shebisisa ka tlas'a microscope, ho ile ha bonoa hore 60% ho isa ho 70% ea likhoele tse le 'ngoe li senyehile.Ho tloha qetellong ea teko, ho lumeloa hore matla a tlhaho a fiber monomer ka boeona ha a na tšusumetso ho matla a fiberboard e bonolo e nang le boima ba 0.25-0.4g / cm3.E na le phello e hlakileng haholoanyane ho matla a fiberboard ea methapo ea methapo e nang le boima ba 0.4-0.8g / cm3.E tla ba le tšusumetso e kholo ho matla a li-fiberboards tse phahameng haholo tse nang le boima bo fetang 0.9g/cm3.Sena ke hobane matla a tlhaho a fiber e le 'ngoe ka boeona e amana le bolelele bo tloaelehileng ba ketane ea cellulose (ke hore, tekanyo ea polymerization),' me bolelele ba ho robeha ha fiber e le 'ngoe bo ka fihla ho 40000Pm.Ka mor'a hore likhoele li behoe ebe li etsoa ka li-slabs, tokisetso e sa tloaelehang e boemong ba ho hasana le ho sa tloaeleha.Ka mor'a ho felisa tšusumetso ea lintlha tse ling, ho nka hore karolelano ea bolelele ba ho robeha ha fiber e le 'ngoe ke 20 000 Pm, ebe e baloa ho ea ka palo e tsitsitseng ea 40%, fiber e le' ngoe Bolelele ba ho robeha bo ka fihla ho 8 000 Pm.Ho ka bonoa hore kamano pakeng tsa matla a tlhaho a fiber ka boeona le matla a sehlahisoa sa fiberboard.

 

(2) Kamano pakeng tsa tekanyo ea karohano ea fiber le boleng ba fiberboard

 

Tekanyo ea karohano ea fiber e bolela tekanyo ea karohano ea fiber ka mor'a ho senyeha, e leng karolo e bontšang ka mokhoa o sa tobang boleng ba likhoele.Ha fiber e arohana hantle, sebaka se khethehileng sa fiber se ba seholoanyane, 'me metsi a phallang hantle le moea o phunyeletsang oa fiber.Ka lehlakoreng le leng, ho molemo ho hloekisa metsi le ho phunyeletsa moea oa fiber, empa fiber ka nako ena hangata e tenya 'me sebaka se itseng sa fiber se batla se le senyenyane.Ka mor'a karohano ea fiber, sebaka se ikhethileng sa fiber se lumellana ka tsela e fapaneng le metsi a metsi.Ha sebaka se itseng se le seholoanyane, ho na le likhoele tse ntle haholo, 'me ho mpefala ha metsi a fiber e ntse e le teng.Fiber e fokolang ea karohano ea fiber (28 ~ 48 mesh) e na le khanyetso e nyane ea moea, ha tekanyo e phahameng ea karohano ea fiber le fiber e ntle e na le sebaka se seholo se khethehileng (100 ~ 200 mesh), moea o fokolang oa fiber, ho tlatsa letlapa le letle, empa moea o moholo. khanyetso.E kholoanyane sebaka se ikhethileng sa fiber, molumo oa fiber e nyane, 'me ka tsela e fapaneng.Kahoo ho ka etsoa qeto ea hore ho sefa, ho phunyeletsa ha moea le molumo oa fiber kaofela li na le kamano e itseng le tekanyo ea ho arohana ha fiber.Ka hona, ho ka boleloa hore tekanyo ea ho arohana ha fiber ke pontšo ea bohlokoa ea boleng ba fiber pulp, e amang ka ho toba mokhoa oa tlhahiso ea fiber le boleng ba sehlahisoa.Boikoetliso bo boetse bo pakile hore ka har'a mefuta e itseng, tekanyo e phahameng ea karohano ea fiber, ke hore, ha likhoele li le ntle haholo, ho tla ba betere ho loha lipakeng tsa likhoele tsa letlapa, le matla, ho hanyetsa metsi le bongata ba sehlahisoa sa fiberboard. le eona e eketsehe ho latela.

 

Ho phaella moo, ho phethoa ho tsoa phihlelong e sebetsang hore tekanyo ea karohano ea fiber e lokela ho laoloa ka har'a mefuta e itseng motheong oa ho tsitsisa boleng ba sehlahisoa ho latela mefuta e fapaneng ea lihlahisoa le litšobotsi tsa ts'ebetso.

 

(3) Kamano pakeng tsa boleng ba tlhahlobo ea fiber le boleng ba fiberboard

 

Sebopeho sa fiber, bolelele ba fiber le tekanyo ea botenya ba mefuta e fapaneng ea lisebelisoa tse tala li tla ba le tšusumetso e fapaneng boleng ba fiberboard.Mokhoa oa ho hlahloba boleng ba fiber hangata ke ho sebelisa karohano ea fiber (fiber freeness DS le fiber percussion degree SR).Hobane fiber ka boeona e fapane haholo, hangata ho thata ho bonahatsa boleng ba boleng ba fiber ka ho lekanya tekanyo ea karohano ea likhoele feela.Ka linako tse ling litekanyetso tsa bolokolohi ba likhoele tse peli li tšoana hantle, empa bolelele le boholo ba karolelano ea likhoele li fapane.Ka hona, e tlatselletsoa ka ho hlahloba boleng ba fiber sieving ho hlahloba boleng ba fiber e arohaneng.

 

Boleng ba tlhahlobo ea fiber bo bohlokoa haholo tlhahisong ea 'nete.Ho fetola boleng ba tlhahlobo ea fiber slurry ho ka ntlafatsa sebopeho sa fiber le thepa ea slurry, ka hona ho ntlafatsa boleng ba lihlahisoa tsa fiberboard.Patlisiso mabapi le phello ea boleng ba tlhahlobo ea fiber ho boleng ba fiberboard ke khale e lebisoa tlhokomelo ho eona, 'me ho fumanoe motheo oa kamehla oa tekheniki.Fiber morphology e ameha haholo-holo ke mofuta oa thepa le mokhoa oa karohano ea fiber.Patsi ea coniferous e betere ho feta tlhale e nang le mahlaku a sephara.Mokhoa oa lik'hemik'hale oa lik'hemik'hale o molemo ho feta mokhoa oa ho futhumatsa mochine (ke hore, mokhoa oa ho sila ka mocheso), 'me mokhoa o hloekileng oa mochine o sebetsa hantle.mafutsana.

Dongguan MUMUSehlopha sa Woodworking Co., Ltd.ke moetsi le morekisi oa thepa ea moaho e monyang molumo.Ka kopoiteanye le ronabakeng sa lintlha tse ling!