Kodi ntchito plywood bakelized?

Back mu 1909 anawalemba woyamba setifiketi ya dziko kupanga mapulasitiki. Poyamba, asayansi apanga ndi utomoni phenol-formaldehyde, ndipo patapita anailandira woyamba polima dziko. Choyamba, chinthu chatsopano wakhala pooti otchedwa ndi akatswiri "oksibenzilmetilenglikolangidrid", koma lolingalira analakika, ndiyeno anabadwa "Bakelite". Kwenikweni, tsiku limeneli linali tsiku pamene panali plywood bakelized.

Komabe, wotchuka mankhwala sikunali yomweyo: poyamba icho chinali kugwiritsidwa ntchito yekha kwa kupanga insulators. Koma patapita zaka zingapo, izo nakokera chidwi cha oimira makampani magalimoto ndi mipando: Bakelite anali malleable kwambiri ndi zinthu zotsika mtengo, abwino kwa kuŵeta.

Analengedwa posachedwapa plywood bakelized, amene ali pafupifupi zikutsatiridwa alipo lero. Bukuli lili ndi apamwamba birch maonekedwe, glued phenol formaldehyde varnish. Popeza kuthamanga ndi kutentha, amene zinthu zofunika kwa kupanga nkhaniyi, n'zotheka kukwaniritsa pafupifupi 100% digiri ya impregnation. Phenols okha ali insoluble ndi sangativulaze thanzi la ogula, koma ogwira mtima popewa mafangasi kuukira kwa plywood. Chifukwa cha zimenezi, tingati chomwecho pafupifupi si kuvunda.

Ngakhale kuphweka kwambiri kupanga, kutsatira plywood bakelized ali ndi mphamvu makhalidwe kuti athe kuti pafupifupi kupikisana ndi zochitika atsopano. Koma mtengo n'chozama kwambiri, zomwe zimathandiza kuti kutchuka kwa nkhaniyi mwa omanga.

Mukapitirira kuwerenga bwinobwino, mwina sadzakhala kwa inu uthenga chakuti zikhoza kugwiritsidwa ntchito ngakhale mu mapangidwe yovuta kwambiri. Iwo ali osati kukana mkulu chinyezi, komanso amadwala makhalidwe oipa a mapangidwe aukali mankhwala. Chifukwa cha zimenezi, nthawi zambiri Tingaone m'madera osiyanasiyana zosowa, ndilo sitimayo za m'chombo. Inde, zikachitika wapadera madzi zosagwira plywood bakelized nthawi yaitali anatha kupirira ngakhale mmene zotakasika m'madziwo.

Komanso akhoza kugwiritsidwa ntchito monga chuma kwa formwork reusable, monga m'zinthu ngakhale pang'ono kuponyera anakhalabe opanda vuto. Sungani shuttering ngati ndi losavuta, ndi mpanda wake yosalala kulola kupeza linanena bungwe kapu pafupifupi kasinthidwe wangwiro. Poganizira komanso matenthedwe ake otsika madutsidwe, mutaya kuli kutentha, kugwiritsa ntchito luso yozizira Kutentha konkire pamene kuthira. Mwachidule, ndi plywood yosavuta bakelized akhoza kupulumutsa ndalama zambiri pa mtengo wotsikitsitsa kugula izo.

The chachikulu cha muyezo pepala la nkhaniyi kumatha kufunika mlingo wa mafupa. Ngati bwino ndi mosamala ntchito, formwork wina ndithu kuzilepheretsa za makumi atatu kumadzazidwa! Panopa plywood bakelized mtundu FBS opangidwa mu dziko lathu. Atatulutsidwa zomera chinkhoswe mu Tyumen ndi Nizhny Novgorod, wodziwika mkulu amasokoneza ake.