Nkhani

Phenolic resin ndi imodzi mwazinthu zofunika kwambiri m'mafakitale monga ma brake pads ndi abrasives. Madzi owonongeka omwe amapangidwa panthawi yopanga phenolic resin ndizovuta kwa opanga.

Phenolic resin kupanga madzi otayidwa ali ndi kuchuluka kwa phenols, aldehydes, resins ndi zinthu zina organic, ndipo ali ndi mawonekedwe a organic concentration, high toxicity, and low pH. Pali njira zambiri zogwirira ntchito zochizira madzi otayira okhala ndi phenol, ndipo njira zomwe zimagwiritsidwa ntchito kwambiri zimaphatikizapo njira za biochemical, njira za oxidation zamankhwala, njira zochotsera, njira zotsatsa, ndi njira zochotsera mpweya.
 
M'zaka zaposachedwa, njira zambiri zatsopano zatulukira, monga njira yothandizira makutidwe ndi okosijeni, njira yosiyanitsira nembanemba yamadzimadzi, ndi zina zotero, koma m'mapulojekiti enieni a phenolic resin resin, makamaka kuti akwaniritse miyezo yotuluka, njira zam'madzi am'madzi akadali njira yodziwika bwino. Mwachitsanzo, njira zotsatirazi za phenolic resin zochizira madzi otayira.
Choyamba, perekani mankhwala a condensation pamadzi onyansa a phenolic resin, kuchotsa ndi kubwezeretsa utomoniwo. Kenaka, mankhwala ndi zopangira zowonjezera zimawonjezeredwa ku madzi otayira a phenolic resin pambuyo pa chithandizo choyambirira cha condensation, ndipo chithandizo chachiwiri cha condensation chimachitidwa kuchotsa phenol ndi formaldehyde.

Madzi owonongeka a phenolic resin pambuyo pa chithandizo chachiwiri cha condensation akusakanikirana ndi madzi onyansa a pampu, pH mtengo umasinthidwa kukhala 7-8, ndipo amaloledwa kuyima. Kenako pitilizani kuwonjezera ClO2 kuti muchepetse oxidize madzi oyipa kuti muchepetse zomwe zili mu formaldehyde ndi COD. Kenaka yonjezerani FeSO4, ndikusintha pH mtengo kukhala 8-9 kuchotsa CloO2 yobweretsedwa ndi sitepe yapitayi.
Madzi owonongeka a phenolic resin omwe adakonzedweratu adzapatsidwa chithandizo chamankhwala a SBR kuti achotse zowononga m'madzi kudzera mu tizilombo toyambitsa matenda.
Madzi otayira a phenolic resin amakonzedwa kale, kenako amapangidwanso, kuti madzi otayira afikire muyezo.