Chemical katundu wa nsungwi zipangizo

Zipangizo za bamboo zimakhala ndi cellulose wambiri, mawonekedwe amtundu wowonda, makina abwino komanso mapulasitiki. Monga zinthu zina zabwino zopangira matabwa, nsungwi imatha kukwaniritsa zofunikira pakupanga mapepala apakatikati komanso apamwamba. Kafukufuku wawonetsa kuti nsungwi zopangidwa ndi nsungwi ndi ma fiber zimakhala ndi zabwino zopukutira. Kapangidwe ka nsungwi kamakhala kachiwiri kokha ka matabwa a coniferous, ndipo ndiabwino kuposa matabwa a masamba otakata ndi udzu. Myanmar, India ndi mayiko ena ali patsogolo kwambiri padziko lonse lapansi pantchito yopanga nsungwi ndi kupanga mapepala. Zida za nsungwi zaku China ndi zopangidwa zamapepala zimatumizidwa makamaka kuchokera ku Myanmar ndi India. Kupanga mwamphamvu ntchito yopukutira nsungwi ndi kupanga mapepala ndikofunikira kwambiri pakuchepetsa kuchepa kwa zida zamatabwa zamatabwa.

Nsungwi imakula mwachangu ndipo imatha kukololedwa pakatha zaka 3 mpaka 4. Kuphatikiza apo, nkhalango za nsungwi zimakhala ndi mphamvu zowongolera mpweya, zomwe zimapangitsa kuti phindu lazachuma, chilengedwe komanso chikhalidwe chamakampani ansungwi likhale lodziwika bwino. Pakadali pano, luso laukadaulo lopanga nsungwi zaku China ndi zida zakula pang'onopang'ono, ndipo zida zazikulu monga kumeta ndi kutulutsa zapangidwa kunyumba. Mizere yayikulu komanso yaying'ono yopanga mapepala ansungwi yapangidwa ndi mafakitale ndikupangidwa ku Guizhou, Sichuan ndi malo ena.

Chemical katundu nsungwi
Monga biomass, nsungwi ili ndi zigawo zazikulu zitatu za mankhwala: cellulose, hemicellulose, ndi lignin, kuwonjezera pa pectin, wowuma, polysaccharides, ndi sera pang'ono. Powunika kapangidwe kake ndi mawonekedwe a nsungwi, titha kumvetsetsa zabwino ndi zoyipa za nsungwi ngati zamkati ndi pepala.
1. Bamboo ali ndi cellulose wambiri
Pepala lomalizidwa bwino kwambiri lili ndi zofunika kwambiri pazamkati zopangira, zomwe zimafuna kuti kuchuluka kwa cellulose kukhale kwabwinoko, komanso kutsika kwa lignin, ma polysaccharides ndi zina zowonjezera, ndizabwinoko. Yang Rendang et al. poyerekeza zigawo zikuluzikulu za mankhwala a biomass zipangizo monga nsungwi (Phyllostachys pubescens), masson pine, poplar, ndi udzu wa tirigu ndipo anapeza kuti mapadi zili masson pine (51.20%), nsungwi (45.50%), poplar (43.24%), ndi udzu wa tirigu (35.23%); hemicellulose (pentosan) zili popula (22.61%), nsungwi (21.12%), udzu wa tirigu (19.30%), ndi masson pine (8.24%); Zomwe zili mu lignin zinali nsungwi (30.67%), mason pine (27.97%), poplar (17.10%), ndi udzu wa tirigu (11.93%). Zitha kuwoneka kuti pakati pa zida zinayi zofananira, nsungwi ndizomwe zimakoka zomwe zimakhala zachiwiri ku mason pine.
2. Ulusi wa nsungwi ndi wautali ndipo uli ndi gawo lalikulu
Kutalika kwa ulusi wa nsungwi ndi 1.49 ~ 2.28 mm, m'mimba mwake ndi 12.24 ~ 17.32 μm, ndipo chiwerengero ndi 122 ~ 165; pafupifupi makulidwe a khoma la ulusi ndi 3.90 ~ 5.25 μm, ndipo chiŵerengero cha khoma-to-cavity ndi 4.20 ~ 7.50, chomwe ndi chingwe chokhuthala chokhala ndi chiŵerengero chokulirapo. Zida zamkati zimadalira pa cellulose kuchokera ku biomass. Zipangizo zabwino za biofiber zopangira mapepala zimafunikira kuchuluka kwa cellulose komanso kutsika kwa lignin, zomwe sizingangowonjezera zokolola za zamkati, komanso kuchepetsa phulusa ndi zotulutsa. Bamboo ali ndi mawonekedwe a ulusi wautali komanso chiwongolero chachikulu, zomwe zimapangitsa kuti ulusi ukhale wolumikizana nthawi zambiri pagawo lililonse pambuyo poti zamkati za nsungwi zapangidwa kukhala pepala, ndipo mphamvu ya pepala imakhala yabwinoko. Chifukwa chake, magwiridwe antchito a nsungwi ndi ofanana ndi amitengo, ndipo ndi amphamvu kuposa mbewu zina zaudzu monga udzu, udzu wa tirigu, ndi bagasse.
3. Ulusi wa bamboo uli ndi mphamvu zambiri za ulusi
Bamboo cellulose sizongowonjezereka, zowonongeka, zowonongeka, zowonongeka, za hydrophilic, ndipo zimakhala ndi makina abwino kwambiri komanso kutentha kukana, komanso zimakhala ndi makina abwino. Akatswiri ena anachita mayeso okhwima pa mitundu 12 ya ulusi wa nsungwi ndipo anapeza kuti ulusi wake wotanuka komanso mphamvu yake yolimba imaposa ya ulusi wa matabwa umene ukukula mofulumira. Wang ndi al. anayerekezera mphamvu zamakina zamitundu inayi ya ulusi: nsungwi, kenaf, fir, ndi ramie. Zotsatira zake zidawonetsa kuti ma tensile modulus ndi mphamvu ya nsungwi fiber zinali zapamwamba kuposa zida zina zitatu za ulusi.
4. Bamboo ali ndi phulusa lalikulu komanso zotulutsa
Poyerekeza ndi nkhuni, nsungwi imakhala ndi phulusa lalitali (pafupifupi 1.0%) ndi 1% NAOH yochotsa (pafupifupi 30.0%), yomwe imatulutsa zonyansa zambiri panthawi ya pulping, zomwe sizikugwirizana ndi kutulutsa ndi madzi onyansa a zamkati ndi makampani opanga mapepala, ndipo adzawonjezera mtengo wandalama wa zida zina.

Pakadali pano, mtundu wazinthu zamapepala a nsungwi za Yashi Paper wafika pazofunikira za EU ROHS, zadutsa EU AP (2002) -1, US FDA ndi mayeso ena apadziko lonse lapansi amtundu wa chakudya, adapambana chiphaso cha nkhalango cha FSC 100%, ndipo ilinso kampani yoyamba ku Sichuan kupeza chitsimikiziro chachitetezo cha China ndi thanzi; pa nthawi yomweyo, wakhala sampuli ngati "quality kuyang'anira zitsanzo oyenerera" mankhwala ndi National Paper Zamgulu Anayendera Center kwa zaka khumi zotsatizana, komanso anapambana ulemu monga "National Quality Stable Oyenerera Brand ndi Product" ku China Quality. Ulendo.