Plastiki inoreva zvinhu zvinonyanya kuumbwa neresin (kana monomers polymerized zvakananga panguva yekugadziriswa), inowedzerwa nezvinowedzerwa senge plasticizers, mafirita, mafuta ekuzora, uye colorants, ayo anogona kuumbwa kuita chimiro panguva yekugadziriswa.
Hunhu Hunokosha hwePlastiki:
① Mazhinji mapurasitiki haana huremu uye akagadzikana mumakemikari, anoshingirira mukuora.
② Yakanakisa kukanganisa kuramba.
③ Kujeka kwakanaka uye kupfeka kuramba.
④ Insulating zvivakwa zvine yakaderera thermal conductivity.
⑤ Kazhinji zviri nyore kuumba, ruvara, uye kugadzirisa nemutengo wakaderera.
⑥ Mapurasitiki mazhinji haana kushomeka kwekupisa, kuwedzera kwemafuta, uye anogona kupisa.
⑦ Dimensional kusagadzikana, kunowanzoita deformation.
⑧ Mapurasitiki mazhinji anoratidza kuita kwakaderera-kupisa, kuita brittle mumamiriro ekutonhora.
⑨ Inokwanisa kuchembera.
⑩ Mamwe mapurasitiki anonyungudika zviri nyore muzvinonyungudutsa.
Phenolic resinsanoshandiswa zvakanyanya muFRP (Fiber-Reinforced Plastic) zvikumbiro zvinoda FST (Moto, Utsi, uye Toxicity) zvivakwa. Pasinei nezvimwe zvisingakwanisi (kunyanya brittleness), phenolic resins inoramba iri chikamu chikuru chekutengesa resins, nekugadzirwa kwepagore kwepasi rose kwematani anoda kusvika mamiriyoni matanhatu. Phenolic resins inopa yakanakisa dimensional kugadzikana uye makemikari kuramba, kuchengetedza kugadzikana mukati metembiricha ye150-180 ° C. Izvi zvivakwa, zvakasanganiswa nemutengo-kuita kwavo mukana, kutyaira kwavo kuenderera mberi kwekushandisa muFRP zvigadzirwa. Zvishandiso zvakajairika zvinosanganisira zvinhu zvemukati zvendege, liner zvinotakura zvinhu, njanji yemukati yemotokari, offshore oiri platform gratings nemapombi, tunnel zvinhu, friction materials, rocket nozzle insulation, uye zvimwe zvigadzirwa zvine chekuita neFST.
Mhando dzeFiber-Reinforced Phenolic Composites
Fiber-reinforced phenolic compositeszvinosanganisira zvinhu zvakakwidziridzwa neshinda dzakachekwa, machira, uye fiber inoramba iripo. Mafibhi ekutanga akachekwa (semuenzaniso, huni, cellulose) achiri kushandiswa muphenolic molding makomisheni kune akasiyana maapplication, kunyanya emota zvikamu zvakaita semavharo epombi yemvura uye friction components. Mazuva ano phenolic molding compounds zvinosanganisira girazi fibers, metal fibers, kana kuti ichangopfuura, carbon fibers. Iyo phenolic resins inoshandiswa mukuumba makomisheni ndeye novolac resins, inorapwa nehexamethylenetetramine.
Pre-impregnated machira emidziyo anoshandiswa mumhando dzakasiyana siyana, seRTM (Resin Transfer Molding), zvimiro zvehuchi masangweji, kuchengetedzwa kweballistic, mapaneru emukati wendege, uye kutakura zvinhu. Inoenderera mberi fiber-yakasimbiswa zvigadzirwa zvinoumbwa kuburikidza nefilament winding kana pultrusion. Mucheka uye unoendererafiber-reinforced compositeskazhinji vanoshandisa mvura- kana solvent-soluble resole phenolic resins. Kupfuura resole phenolics, mamwe ane hukama phenolic masisitimu-akadai sebenzoxazines, cyanate esters, uye ichangobva kugadzirwa Calidur™ resin-anoshandiswawo muFRP.
Benzoxazine rudzi rutsva rwe phenolic resin. Kusiyana nemaitiro echinyakare phenolics, apo zvikamu zvemamorekuru zvakabatanidzwa kuburikidza nemethylene mabhiriji [-CH₂-], benzoxazines inoumba cyclic chimiro. Benzoxazines inogadzirwa nyore nyore kubva kune phenolic zvinhu (bisphenol kana novolac), primary amines, uye formaldehyde. Mhete-inovhura polymerization yavo haiburitse zvigadzirwa kana kuparara, inosimudzira kugadzikana kwechimiro chechigadzirwa chekupedzisira. Pamusoro pekupisa kwakanyanya uye kuramba kwemurazvo, benzoxazine resins inoratidza zvinhu zvisipo mune zvechinyakare phenolics, senge kuderera kwemwando kunyura uye kugadzikana kwe dielectric performance.
Calidur™ chizvarwa chinotevera, chimwe-chikamu, mukamuri-tembiricha-yakagadzika polyarylether amide thermosetting resin yakagadziriswa naEvonik Degussa yemaindasitiri emuchadenga nemagetsi. Thisresin inorapa pa140°C mumaawa maviri, ine tembiricha yegirazi (Tg) ye195°C. Parizvino, Calidur ™ inoratidza akawanda mabhenefiti emhando yepamusoro-inoshanda macomposites: hapana inovhuvhuta inobuda, yakaderera exothermic reaction uye shrinkage panguva yekurapa, yakanyanya kupisa uye kunyorova simba, yakakwirira composite compression uye shear simba, uye yakanakisa kuomarara. Iyi innovative resin inoshanda seimwe inodhura-inoshanda kune yepakati-kusvika-yakakwirira-Tg epoxy, bismaleimide, uye cyanate ester resin munzvimbo yeaerospace, yekufambisa, mota, magetsi / zvemagetsi, uye zvimwe zvinoda maapplication.
Nguva yekutumira: Jun-24-2025
