Phenolic resin inonziwobakelite, inozivikanwawo se bakelite powder.Pakutanga chinhu chisina ruvara (chichena) kana chero-shava-ruvara chinoonekera, musika unowanzo wedzera mavara ekuisa mavara kuti aite seakatsvuka, yeyero, dema, girinhi, brown, bhuruu uye mamwe mavara, uye ane granular uye upfu.Inopikisa asidhi isina simba uye alkali isina simba, inoora kana iine asidhi yakasimba uye inoora kana iine alkali yakasimba.Soluble muacetone, mvura, doro uye mamwe organic solvents.Inowanikwa ne polycondensation ye phenolic aldehyde kana zvinobva zvayo.Solid phenolic resin ndeyero, inoonekera, amorphous blocky substance, yakatsvuka nekuda kwemahara phenol, avhareji yakananga giravhiti yenhengo inenge 1.7, inonyungudika nyore mudoro, isinganyungudike mumvura, yakagadzikana kumvura, asidhi isina simba uye isina simba alkali mhinduro.Iro resin yakagadzirwa ne polycondensation ye phenol uye formaldehyde pasi pemamiriro ezvinhu anokonzera, neutralization uye kushambidza nemvura.Nekuda kwesarudzo yecatalyst, inogona kukamurwa kuva marudzi maviri: thermosetting uye thermoplastic.Phenolic resin ine yakanaka acid resistance, mechanical properties uye heat resistance, uye inoshandiswa zvakanyanya muanti-corrosion engineering, adhesives, flame retardant materials, kugaya mavhiri kugadzira nemamwe maindasitiri.
Phenolic resin poda imhando ye thermoplastic phenolic resin inoumbwa ne polycondensation ye phenol uye formaldehyde mune acidic medium.Inogona kunyungudutswa mu ethanol uye kuva thermosetting nekuwedzera 6-15% urotropine.Inogona kugadzirwa pa150°C uye ine mamwe masimba emagetsi.uye magetsi ekudzivirira zvinhu.
Chinhu chikuru che phenolic resin ndeyekupisa tembiricha kuramba, uye inogona kuchengetedza kuvimbika kwayo kwechimiro uye kugadzikana kwedimensional kunyangwe pakupisa kwakanyanya.Naizvozvo, phenolic resins anoshandiswa munzvimbo dzekushisa dzepamusoro, senge refractory zvinhu, friction materials, adhesives uye foundry maindasitiri.
Kushandiswa kwakakosha kwephenolic resin kwakafanana nebhainda.Phenolic resins inogoneka uye inoenderana neyakasiyana siyana yeorganic uye inorganic fillers.Yakagadzirwa nemazvo phenolic resin inonyorova nekukasira.Uye mushure mekuyambuka-yakabatana, inogona kupa inodiwa mechanical simba, kupisa kupisa uye magetsi zvivakwa zveabrasive maturusi, refractory zvinhu, friction zvinhu uye bakelite.
Mvura-soluble phenolic resins kana doro-soluble phenolic resins inoshandiswa kuisa mapepa, jira rekotoni, girazi, asbestos nezvimwe zvinhu zvakafanana kuti zvivape simba remagetsi, magetsi emagetsi, nezvimwewo discs uye sefa bepa remotokari mafirita.
Phenolic resin zvinhu:
Kushanda kwekushisa kwepamusoro: Chinhu chinonyanya kukosha che phenolic resin ndechekudzivirira kwekushisa kwepamusoro, kunyange pakupisa kwakanyanya, inogona kuchengetedza kutendeseka kwayo uye kugadzikana kwechimiro.
Bond simba: Kushandiswa kwakakosha kwephenolic resin kwakafanana nebhainda.Phenolic resins inogoneka uye inoenderana neyakasiyana siyana yeorganic uye inorganic fillers.
High carbon residue rate: Pasi pegasi inert mamiriro ane tembiricha ingangoita 1000°C, phenolic resins inoburitsa yakakwira kabhoni masara, ayo anobatsira kuchengetedza kugadzikana kwechimiro che phenolic resins.
Utsi hwakaderera uye hupfu hwakadzika: Kuenzaniswa nemamwe masisitimu eresin, phenolic resin system ine zvakanakira zvehutsi hwepasi uye kuderera kwehuturu.Panyaya yekupisa, iyo phenolic resin system inogadzirwa nesainzi formula inowora zvishoma nezvishoma kuti ibudise haidhirojeni, mahydrocarbon, mhute yemvura uye carbon oxides.Hutsi hunogadzirwa panguva yekuora hushoma, uye huturu hwacho hushoma.
Kemikari kuramba: Muchinjikwa-yakabatana phenolic resin inogona kuramba kuparara kwechero makemikari zvinhu.Zvakadai se peturu, peturu, doro, glycol, girizi uye akasiyana hydrocarbons.
Kurapa kwekupisa: Kurapa kwekupisa kuchawedzera tembiricha yegirazi resin yakarapwa, iyo inogona kuwedzera kuvandudza zvinhu zve resin.
Foamability: Phenolic foam imhando yepurasitiki yefuro inowanikwa nekupupuma phenolic resin.Kuenzaniswa ne polystyrene foam, polyvinyl chloride foam, polyurethane furo uye zvimwe zvinhu zvakatonga musika mukutanga nhanho, ine yakakosha kuita kwakanakisa maererano nekunonoka kwemoto.
Nguva yekutumira: Kubvumbi-17-2023