Zvidimbu zvinogadzirisa simba (monomers)—zvinowanzo shanda pamwe chete neoligomers dzinorapika neUV—icheni pfupi, dzinoshanda zvakawanda dzinoshanduka nekukurumidza kuita network dzakaoma, dzinogara kwenguva refu pasi pechiedza cheultraviolet (UV) kana electron beam (EB). Nekuti imvura dzine viscosity inodzorwa uye nzvimbo dzakawanda dzinoita reactive, dzinokutendera kuti ugadzirise kukurumidza kwekuporesa, kuomarara, kuchinjika, kunamira, uye kuramba makemikari uku uchichengetedza VOC yakaderera.

Chii chinonzi reactive diluents?

Zvinoita kuti mvura iite seyakasanganiswa nemakemikari zviri pakati pemamorekuru madiki nemapolymer marefu. MuUV/EB systems zvinoshanda sezvinoderedza viscosity (zvinoderedza viscosity zvichiri kuita reactive mufirimu) uye zvinobatanidza (zvinosimudzira network density kuti ishande zvakanaka). Mhuri dzepakati dzakajairika dzinosanganisira di- uye tri-acrylates dzakadai seHDDA neTMPTA.

Kushanda kweUV/EB kuporesa

Photoinitiators (UV) kana kuti direct EB energy zvinogadzira ma radicals anovhura acrylate double bonds pama monomers ako nema oligomers. Maketani anokura uye anobatana mukati mema milliseconds kusvika kumasekonzi, zvichipa firimu rakasimba rine hunhu hwakanangwa. Hapana kubheka kunodiwa, simba shoma rinopinda, uye simba rakawanda rinobuda.

Kutengeserana kukuru kwezvivakwa

Kusviba vs. zvinhu zvakasimba: Ma monomers ane kusviba kwakaderera (semuenzaniso, HDDA) anowedzera zvinhu zvakasimba uye kuyerera pasina kuwedzera solvent.

● Kumhanya kwemushonga uchienzaniswa nekudzora: MaAcrylates anowanzo pora nekukurumidza, zvichiita kuti maformula adzore kumhanya kwemuchina.

● Kuwanda kweCrosslink vs. kuomarara: Tri-functional TMPTA inosimudzira kuomarara/kusagadzikana kwemakemikari asi inogona kuwedzera kuputsika nekuomarara; di-functional (HDDA) inobatsira kuenzana uye kupa kuchinjika.

● Kunamira & kutsvuka: HDDA inoshandiswa pakunamatira simbi/mapurasitiki uye kutsvuka zvishoma; kusanganisa zvine hungwaru kunobatsira kugadzirisa mhedzisiro.

Kusarudza oligomer chaiyo

● HDDA (1,6-hexanediol diacrylate): inoporesa nekukurumidza, haisvibisi zvakanyanya, inonamatira zvakasimba kumapurasitiki/simbi, inoita yero shoma; inoenzanisa kumhanya uye kugona kwayo kugadzikiswa.

● TMPTA (trimethylolpropane triacrylate): tri-functional crosslinker yekuoma kwakanyanya, kuramba solvent, uye kumhanya kwemutsara—shandisa zvine hungwaru kudzora kuputsika.

Zvishandiso zvepakati(uye maitiro ekuzvishandisa)

Mapendi & ma inki ekudhinda Shandisa monomer blends kuti usvike pachinangwa chekupenya, simba rekushandisa, uye kugara kwenguva refu kwekushandiswa.

● Mhedzisiro yechinangwa: nekukurumidza inoporesa, kurongeka kwakapfava, kuomarara kwakanyanya/kusakwanisa kushandisa makemikari, VOC shoma.

● Zvakajairika: HDDA yekumhanya/kunamatira uye yero shoma; TMPTA yekusundidzira kuomarara/resistance yekunyungudutsa.

● Kunyura zvakadzama: Mapendi & Nzvimbo yekudhinda yeInki

Zvinonamira & zvinonamira

Shandisa nguva yekugadzirwa, simba, uye kushanda kwetembiricha/makemikari.

● Mhedzisiro yechinangwa: kukurumidza kugadzika, zvisungo zvakasimba pasimbi/PC/ABS, sevhisi inogara kwenguva refu.

● Zvakajairika: HDDA yekukwesha uye kugadzira nekukurumidza ine substrate yakasimba; TMPTA kana uchida simba regirini nekukurumidza uye kuomarara kwakanyanya.

● Kunyura zvakadzama: Zvinonamira & Zvinovhara hub

Maresin ekudhinda e3D & photolithography (SLA/DLP)

Kugadzirisa kuenzana, simba regirini, uye mashandiro ekupedzisira.

● Mhedzisiro yechinangwa: zvinhu zvakanaka, kudzikira kunotarisirwa, kuomarara kwakagadziridzwa/HDT.

● Zvakajairika: HDDA yekuderedza viscosity uye kuvandudza kuvimbika kwekudhinda; TMPTA yekuwedzera kugadzikana kwehukuru (musanganiswa wekudzora kuputsika).

● Kunyura zvakadzama: Nzvimbo yekudhinda ye3D & Photolithography

Kuchengetedzeka uye kutevedzera mitemo

Zvese izvi zvinodzivirira ganda nekufema; shandisa magirovhosi, magogorosi, uye mhepo inofema. Iva nechokwadi chekuti mavara akanyorwa uye kunyoreswa kwakarongeka kumusika wako uye chengetedza QC yakasimba (kusviba, acid value, residual monomer, ruvara, gel fraction).