Tsanangudzo yePhenolic Molding Plastiki (FX501/AG-4V)

Mapurasitiki anoreva zvinhu zvinoumbwa nemaresini (kana kuti mamonomer anogadziriswa zvakananga panguva yekugadzirisa), zvichiwedzerwa nezvimwe zvinhu zvakaita semapurasitiki, zvinozadza, mafuta, uye dhayi, izvo zvinogona kuumbwa kuita chimiro panguva yekugadzirisa.

Hunhu Hukuru hwePurasitiki:

① Mapurasitiki mazhinji akareruka uye akasimba pamakemikari, anodzivirira ngura.

② Inodzivirira kukuvadzwa zvakanyanya.

③ Kujeka uye kuramba kupfeka zvakanaka.

④ Hunhu hwekudzivirira kupisa husina kudziya kwakanyanya.

⑤ Kazhinji zviri nyore kuumba, kuisa ruvara, uye kugadzira nemutengo wakaderera.

⑥ Mapurasitiki mazhinji haapise zvakanyanya, haapise zvakanyanya, uye anogona kutsva.

⑦ Kusagadzikana kwechimiro, kunowanzo shanduka.

⑧ Mapurasitiki mazhinji haashande zvakanaka kana tembiricha yaderera, saka anooma kana kuchitonhora.

⑨ Inokurumidza kukwegura.

⑩ Mamwe mapurasitiki anonyungudika nyore nyore muzvinonyungudutsa.

Maresin ePhenolicanoshandiswa zvakanyanya muFRP (Fiber-Reinforced Plastic) zvinoda hunhu hweFST (Fire, Smoke, and Toxicity). Pasinei nezvimwe zvipingamupinyi (kunyanya kuputsika), phenolic resins inoramba iri chikamu chikuru chemaresins ekutengeserana, nekugadzirwa kwegore negore kwepasi rose kweanoda kusvika matani mamiriyoni matanhatu. Phenolic resins inopa kugadzikana kwakanaka uye kuramba makemikari, ichichengetedza kugadzikana mukati mekupisa kwe150–180°C. Hunhu uhwu, pamwe chete nekubatsira kwavo pakushanda zvakanaka, hunoita kuti dzirambe dzichishandiswa muzvigadzirwa zveFRP. Mashandisirwo akajairika anosanganisira zvikamu zvemukati mendege, cargo liner, rail vehicle interiors, offshore oil platform gratings and pipes, tunnel materials, friction materials, rocket nozzle insulation, nezvimwe zvigadzirwa zvine chekuita neFST.

Mhando dzeFiber-Reinforced Phenolic Composites

Zvinhu zvinosanganiswa nefeibha zvinosimbiswa nefeibhazvinosanganisira zvinhu zvakasimbiswa neshinda dzakachekwa, machira, uye shinda dzinoramba dzichishandiswa. Nhambwe dzakachekwa kare (semuenzaniso, huni, cellulose) dzichiri kushandiswa mumakemikari ekugadzira ephenolic mukushandiswa kwakasiyana-siyana, kunyanya zvikamu zvemotokari zvakaita sezvivharo zvepombi yemvura uye zvikamu zvekukweshana. Mishonga yemazuva ano yephenolic molding inosanganisira shinda dzegirazi, shinda dzesimbi, kana kuti munguva pfupi yapfuura, tambo dzekabhoni. Maresini ephenolic anoshandiswa mumakemikari ekugadzira i novolac resins, inorapwa ne hexamethylenetetramine.

Machira akaiswa mushonga anoshandiswa mumhando dzakasiyana-siyana, dzakadai seRTM (Resin Transfer Molding), zvivakwa zvemasandwich emuchindwe, dziviriro yebhora, mapaneru emukati mendege, uye mabhegi ekutakura zvinhu. Zvigadzirwa zvinosimbiswa nefiber zvinogadzirwa kuburikidza nefilament winding kana pultrusion. Machira uye zvinoramba zvichishandiswazvinhu zvinosanganiswa zvakasimbiswa nefiberkazhinji vanoshandisa resole phenolic resins dzinonyungudika mumvura kana kuti dzinonyungudika. Kunze kweresole phenolics, mamwe masisitimu ane chekuita nephenolic—akadai sebenzoxazines, cyanate esters, uye resin ichangobva kugadzirwa yeCalidur™—anoshandiswawo muFRP.

Benzoxazine imhando itsva yephenolic resin. Kusiyana nemaphenolic echinyakare, uko zvikamu zvemamorekuru zvakabatana kuburikidza nemabhiriji emethylene [-CH₂-], mabenzoxazines anoumba chimiro chinotenderera. Mabenzoxazines anogadzirwa zviri nyore kubva kuzvinhu zvephenolic (bisphenol kana novolac), maamine ekutanga, uye formaldehyde. Kupomera kwavo kwering-opening hakuburitse zvimwe zvigadzirwa kana volatiles, zvichiwedzera kugadzikana kwechigadzirwa chekupedzisira. Pamusoro pekudzivirira kupisa kwakanyanya uye murazvo, mabenzoxazine resin anoratidza hunhu husipo mumaphenolic echinyakare, senge kunyorova kwakaderera uye kushanda kwakasimba kwe dielectric.

Calidur™ ipurasitiki yepolyarylether amide thermosetting resin yechizvarwa chinotevera, ine chikamu chimwe chete, inogadzikana pakupisa kwekamuri yakagadzirwa naEvonik Degussa kumaindasitiri emuchadenga nemagetsi. Thisresin inoporesa pa140°C mumaawa maviri, nekupisa kwegirazi (Tg) kwe195°C. Parizvino, Calidur™ inoratidza mabhenefiti akawanda ezvishandiso zvepamusoro: hapana kusvibiswa kwemhepo, maitiro ekunze akaderera uye shrinkage panguva yekupisa, simba rekupisa rakawanda uye rakanyorova, compression yepamusoro yecomposite uye simba rekuchekwa, uye kuomarara kwakanyanya. Iyi resin itsva inoshanda senzira inodhura zvishoma pane epoxy yepakati kusvika yakakwira yeTg, bismaleimide, uye cyanate ester resins muaerospace, kutakurwa, mota, magetsi/magetsi, nezvimwe zvinoshandiswa zvinoda simba.