Iyo fiber yemhando inodikanwa yekugadzirwa kwefiberboard inowanzotemwa zvichienderana nechikamu chechigadzirwa, maitiro ekugadzira uye chimiro chemidziyo.Kana zviri zvemhando yefiber, mafiber akapatsanurwa anodiwa kuti ave neimwe nzvimbo chaiyo yepasi uye yakanaka interweaving zvivakwa, uye zvinoda imwe nhanho reshiyo, kukosha kwesefa, uye fibre drainage, mhepo inopenya, makemikari zvikamu, uye fiber polymerization.Pane zvinodiwa zvakasimba.Zvakadai sekugadzirwa kwemvura, mukugadzira slab kuumba uye kupisa kupisa, iyo fiber slab inodiwa kuti ive nebasa rekukurumidza uye nyore kupera mvura.Kugadzirwa kwakaoma kunoda kwete chete kwakanakira interweaving yefibers, asiwo yakanaka yemhepo permeability ye slab.Zvikasadaro, ma slabs akaumbwa emhando mbiri dzekugadzira achaparadza chimiro cheiyo slabs uye kukanganisa mukati memhando yezvigadzirwa panguva yekufambisa uye inopisa kudzvanya.Nekudaro, kana uchigadzira yakaderera-density kana yakapfava fiberboard, iyo fiber inogona kunge isati yakatsikirirwa kana kuti zvishoma kudzvanywa kuti iomeswe mubhodhi mushure mekugadzira slab.Chiyero chekutsvagisa chinowedzera nzvimbo yekubatanidza uye yekubatana pakati pemafiibhi pachawo.
(1) Hukama pakati pefiber morphology uye mhando yechigadzirwa
Nezve chimiro chechimiro chefiber, pane misiyano mikuru pakati pezvakasiyana mbishi zvinhu.Semuenzaniso, avhareji urefu hwefiber tracheids yehuni coniferous ndeye 2-3 mm, uye chiyero chechikamu ndeye 63-110;hurefu hwehurefu hwefiber tracheids uye huni dzakaomarara dzehuni dzakafara mashizha i 0.8-1.3 mm, uye chiyero che 35-110 58;kana iri yehuswa fiber raw materials, avhareji urefu hwefiber tracheids ingori 0.8-2.2 mm, chiyero che 30-130, uye zviri mukati measiri-fiber masero akareba.
Kubva pamaonero ehurefu hwefiber uye aspect ratio, zvinoita sekunge iyo fiberboard yakagadzirwa nesoftwood fibers iri nani.Nekudaro, zvakaratidzwa kuti kuita kwefiberboard yakatsikirirwa nezvose zveconiferous zvinhu hazvisizvo zvakanakisa.Izvi zvinodaro nekuti ukobvu hwefiber tracheids ye coniferous zvinhu ndeye tubular, uye ukobvu hwesero madziro hwakakura kupfuura hupamhi hwema fiber.Nzvimbo yese yekusangana inova diki.Kusiyana neizvi, fiber tracheids, tambo dzakaoma dzehuni, uye migero yemapuranga ane mashizha akatetepa ane madziro akatetepa uye akaumbwa nebhandi, kuitira kuti nzvimbo yekubatana pakati pemafibhi ihombe, uye pfuma ye interweaving yakanaka.Fibreboard chigadzirwa chine density yakakura uye simba.
Iko kusimba kweiyo fiber pachayo inewo imwe pesvedzero pakusimba kweiyo fiberboard chigadzirwa.Mumwe munhu akamboshandisa nzira yekudhaya kuti apfuure kupeta uye kutadza kutadza bvunzo dzeiyo hard fiberboard, uye akacherekedza pasi pemaikorosikopu, zvakaonekwa kuti 60% kusvika 70% yefiber imwe chete yakakuvadzwa.Kubva pakupera kwebvunzo, zvinotendwa kuti simba remukati remonomer fiber pacharo rinenge risisina pesvedzero pakusimba kweiyo soft fiberboard ine density ye0.25-0.4g/cm3.Iyo ine zvakanyanya kujeka mhedzisiro pasimba repakati density fiberboard ine density ye0.4-0.8g/cm3.Ichange iine simba guru pakusimba kwe-high-density fiberboards ine density yakakura kudarika 0.9g/cm3.Izvi zvinodaro nekuti simba remukati refiber imwe pachayo rine hukama neavhareji kureba kwecheni ye cellulose (kureva, dhigirii repolymerization), uye kureba kwekupwanya kwefiber imwe chete kunogona kusvika 40000Pm.Mushure mokunge mafibhi akavezwa uye akaumbwa kuva slabs, kurongeka kusina kugadzikana kuri mumamiriro ekupararira uye kusina kukwana.Mushure mekubvisa pesvedzero yezvimwe zvinhu, tichifunga kuti avhareji yekupwanya kureba kweiyo imwe fiber ndeye 20 000 Pm, uye yakazoverengerwa zvichienderana nenhamba inochengetedza ye40%, iyo imwechete fiber Kuputsika kureba kunogona kusvika 8 000 Pm.Zvinogona kuoneka kuti hukama pakati pesimba rekuzvarwa refiber pachayo uye kusimba kweiyo fiberboard chigadzirwa.
(2) Hukama huri pakati peiyo dhigirii yekuparadzanisa fiber uye kunaka kwefiberboard
Chiyero chekuparadzaniswa kwefiber kunoreva chiyero chekuparadzaniswa kwefiber mushure mekushomeka, chinova chikamu chinoratidza zvisina kunanga kunaka kwefiber.Kunyanya kuparadzaniswa kwefayibha, ndiko kukura kwenzvimbo chaiyo yefayibha, uye kuderera kwemvura inoyerera uye kupindira kwemhepo kwefayibha.Sezvineiwo, zviri nani kusefa kwemvura uye kupera kwemhepo kwefiber, asi faibha panguva ino inowanzowedzera kukora uye nzvimbo chaiyo yefiber inofanana idiki.Mushure mekupatsanurwa kwefiber, iyo chaiyo nzvimbo yefiber inopesana yakaenzana nekuyerera kwemvura.Iyo yakakura iyo chaiyo nzvimbo yepamusoro, iyo yakanyanya kunaka fibers, uye zvakanyanya kuipa kwemvura yefiber.Yakashata faibha yekuparadzanisa dhigirii Coarse fiber (28 ~ 48 mesh) ine diki mhepo inopikisa, nepo yakakwira faibha yekuparadzanisa dhigirii uye faibha yakanaka ine hombe chaiyo nzvimbo (100 ~ 200 mesh), isina kunaka mhepo yefiber, yakanaka kuzadza slab, asi mweya wakakura. resistance.Iyo yakakura iyo chaiyo nzvimbo yefiber, iyo idiki huwandu hwefiber, uye zvinopesana.Saka zvinogona kutsanangurwa kuti kusefa, kupera kwemhepo uye huwandu hwefiber zvese zvine hukama hwakati nechiyero chekuparadzaniswa kwefiber.Nokudaro, zvinogona kutaurwa kuti chiyero chekuparadzaniswa kwefiber chiratidzo chakakosha chehutano hwefiber pulp, iyo inobata zvakananga maitiro ekugadzira fiber uye unhu hwechigadzirwa.Kudzidzira kwakaratidzawo kuti mukati meimwe nhanho, iyo yakakwira dhigirii yekuparadzaniswa kwefayibha, ndiko kuti, kutsetseka kwemafibhi, zviri nani kurukana pakati pemafiber e slab, uye kusimba, kuramba kwemvura uye density yechigadzirwa chefiberboard. wedzerawo saizvozvo.
Pamusoro pezvo, zvinopedzwa kubva muchiitiko chinoshanda kuti dhigirii rekupatsanurwa kwefiber rinofanira kudzorwa mukati meimwe siyana pahwaro hwekudzikamisa mhando yechigadzirwa zvinoenderana nemhando dzakasiyana dzezvigadzirwa uye maitiro ekuita.
(3) Hukama pakati pefiber yekutarisa kukosha uye fiberboard mhando
Iyo fiber chimiro, kureba kwefiber, uye faibha ukobvu reshiyo yemhando dzakasiyana dzefiber mbishi zvinhu zvichave neakasiyana madhigirii ekukanganisa pamhando yefiberboard.Iyo nzira yekuyedza fiber mhando inowanzo shandisa fiber kupatsanurwa (fiber freeness DS uye fiber percussion degree SR).Nekuti iyo faibha pachayo yakasiyana zvakanyanya, kazhinji zvinonetsa kuratidza hunhu hwefiber quality nekuyera dhigirii rekuparadzaniswa kwefiber chete.Dzimwe nguva kusununguka kwehutsika hwemafiber maviri anonyanya kufanana, asi kureba nekukora kwereshiyo yefibers zvakasiyana.Naizvozvo, inowedzerwa nekuyedza iyo fiber sieving kukosha kuongorora kunaka kweiyo yakaparadzaniswa fiber.
Iyo fiber yekuongorora kukosha yakakosha zvikuru mukugadzirwa chaiko.Kugadzirisa iyo fiber slurry yekutarisa kukosha inogona kuvandudza iyo fiber chimiro uye slurry zvivakwa, nekudaro zvichivandudza mhando yezvigadzirwa zvefiberboard.Tsvagiridzo pamusoro pemhedzisiro yefiber yekutarisa kukosha pamhando yefiberboard yakagara yakatariswa kwairi, uye yakajairwa tekinoroji hwaro hwawanikwa.Iyo fiber morphology inonyanya kukanganiswa nemhando yezvinhu uye nzira yekuparadzanisa fiber.Iyo coniferous huni iri nani pane yakakura-leaved huni fiber.Iyo kemikari yemagetsi nzira iri nani pane yekudziya mechanical nzira (kureva, iyo inopisa grinding nzira), uye yakachena mechanical nzira inonyanya kushanda.varombo.
Dongguan MUMUIyo kambani Woodworking Co., Ltd.iChinese inonzwika-inobata zvivakwa zvekuvaka uye mutengesi.Ndapotataura nesukuti uwane rumwe ruzivo!
Nguva yekutumira: Jul-22-2023
