Mita dze inline density, dzakadai seLonnmeter tuning fork density meter, dzinopa kuyera kwakarurama kwe nitrocellulose lacquer formulations ine high boiling point solvents inoshandiswa mumaindasitiri. Kutarisa density panguva chaiyo kunochengetedza solvent-to-resin ratios chaiyo, zvichikanganisa zvakananga kunaka kwepigment dispersion, film gloss, uye kushanda kwakasimba. Kune matekiniki ekupararira kwepigment muma coatings, kuchengetedza density kushanduka mukati me ±0.5% kunoita kuti particles inyorove zvakanaka uye kudzivirira kusiyana kwe batch-to-batch.
Kukurumidza kupindura kunoderedza njodzi yekusvibiswa kwelacquer nekuda kwekusagadzikana kwe solvent kana kuunganidzwa kwepigment. Zvinonyungudutsa zvakawanda zve polymer zvinofanirwa kudzorwa zvakanyanya kudzivirira kusawirirana kwehuwandu hwekubuda kwemvura uye kuumbwa kwefirimu isina kufanana. Ruzivo rwekukurumidza runobvumira kugadziriswa nekukurumidza—kuderedza kugadziriswa patsva, kuvandudza goho, uye kuve nechokwadi chekuti batch yega yega inosangana nezvinodiwa zve gloss uye flow.
Nitrocellulose Lacquer
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Nhanganyaya
Nitrocellulose lacquer inoshandisa kudzora kwakaringana kwehuwandu hwezvinhu kuti iwane kupenya kwakanyanya uye kunaka kwekuvhara kwakaringana. Inline density metres, senge Lonnmeter tuning fork density meter, inotarisa zvakananga kuyerwa kwemvura panguva yekusanganisa. Kuverengwa kwakarurama kunochengetedza solvent-to-resin ratios yakakwana, kunyanya ne high boiling point solvents inoshandiswa mumaindasitiri. Maitiro ekubudirira ekupararira kwepigment - bead mills, high-speed dispersers, ultrasonic cavitation - inoda sarudzo yakasimba ye solvent kuti pigment igadzikane. Kugadziriswa kwehuwandu hwezvinhu panguva chaiyo kunoita kuti chitarisiko chakafanana, kugadzirwa kwefirimu kwakatsetseka, uye kuvandudzwa kwefirimu gloss yemota nefenicha. Zvidzidzo zveindasitiri zvinoratidza mafirimu matete e nitrocellulose lacquer, akaumbwa mu multi-layer processes, anopa kupenya kwepamusoro uye kujeka. Kuyerwa kwe inline density kunogonesa kugadziriswa nekukurumidza, kuderedza kusiyana kwebatch uye kutsigira kugadzirwa kukuru.
Pfupiso yeKufamba kweMaitiro
Ma reactor anodzorwa anosanganisa nitrocellulose nezvinyungudutsa zvine mwero wepamusoro zvinoshandiswa mumaindasitiri, zvakaita sebutyl glycol nedibutyl phthalate. Zvinowedzerwa uye zvinogadziriswa nepurasitiki zvinosanganiswa kuti zviwedzere kuchinjika uye kupenya. Zviyero zvezvinyungudutsa zvakakosha; zvinyungudutsa zvechokwadi zvinonyungudutsa nitrocellulose ukuwo macosolvents nezvisina kunyungudutsa zvichigadzirisa kunaka kwe viscosity uye surface finish.
Matekiniki ekuparadzira ruvara rwependi nependi anosanganisira ma disperser anomhanya zvakanyanya, ma bead mills, uye ultrasonic cavitation. Izvi zvinoita kuti ruvara ruve rwakaenzana, zvichidzivirira kuungana kwependi uye zvinotsigira kugadzikana kwependi. Kupararira kwepigment kwakagadziriswa kunovandudza kupenya kwependi uye kufanana kwependi.
Kusimba uye huwandu hwezvinhu zvinodzorwa nemazvo nekugadzirisa huwandu hwezvinhu zvinonyungudutsa. Mamita ehuremu hwekuyera mvura, kusanganisira mita yeLonnmeter tuning fork density, anopa hunhu hwenguva chaiyo panguva yekusanganisa, zvichiita kuti chinangwa chienderere mberi uye chive chakajeka.
Kuumbwa kwefirimu kunoongororwa mukati memutsara kuti uone kupenya, kunamira, uye kufukidza, uchishandisa michina yekuyera yakaiswa mumitsara yekushanda. Kugadzirwa kwekupedzisira kwe lacquer ye nitrocellulose uye mashandisirwo ayo anochengetedzwa nekutamiswa kuburikidza nemapombi ane inline density metres ekuisa machira akajeka ne nitrocellulose lacquer. Izvi zvinopa kuenderana kwakanaka kubva pane imwe kuenda kune imwe.
acetonylacetone
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Matambudziko muInline Density Measurement
Zvinyungudutsa zvine mwero wekufashaira zvinononoka kubuda kwemvura, zvichikonzera kuchinja-chinja kwehuwandu hwezvinhu panguva yekugadzirwa kwe nitrocellulose lacquer. Mitsetse yemaindasitiri inoshandisa zvinyungudutsa zvine mwero wekufashaira pamusoro pe140°C (semuenzaniso, xylene, butyl acetate) zvinoratidza kusiyana kwehuwandu hwezvinhu kusvika ku6% paawa nekuda kwekuchinja kwemhepo, kupisa, uye mwero wekuyerera kwemvura.
Matekiniki ekupararira kwemavara akaita sekugaya bead uye ultrasonic cavitation anosangana ne micro-scale agglomeration; kusaenzana kwekutakura kunochinja kunaka kwemavara, zvichikonzera kushanduka kwe3–15% mukuonekwa kwefirimu. Pasina kuongororwa kwenguva chaiyo, kugara kwemavara uye kuumbwa kwemapoka hazvionekwe, zvichikanganisa zvakananga kupenya kwakanyanya.
Munguva yekukwira kwehuwandu hwemvura, kuchengetedza kupararira kwakafanana kwakaoma pasina mita yekuisa huwandu hwemvura mumutsara. Michina yekusanganisa mvura inowedzera kubuda asi inowedzera njodzi yekusagadzikana kwehuwandu hwemvura kana sarudzo ye solvent kana simba rekutiza richichinja. Mita yehuwandu hwemvura murabhoritari—pycnometry kana hydrostatic weighing—haikwanisike kuenderana nekuchinja kwehuwandu hwemvura murabhoritari, kunyanya mukuyerera kwemvura.
Kukanganiswa kwemaitiro, kusvibiswa kwemidziyo, uye kuunganidzwa kwezvisaririra panzvimbo dze sensor zvinoderedza kururama kwedata. Kugadziriswa otomatiki kunodiwa; kuverenga nemaoko kunononotsa mhinduro kusvika kumaminitsi makumi mapfumbamwe pabatch imwe neimwe, zvichikonzera kugadzirwa uye kushandiswa kwe lacquer ye nitrocellulose.
Mabhenefiti ekubatanidza Inline Density Meters/Inline Concentration Meters
Mita dze inline density uye concentration dzinopa kudzora kwakaringana kwe solvent-to-resin ratio ye nitrocellulose lacquer. Iyi data yakananga, inovimbisa kupararira kwepigment kwakaringana uye inodzivirira kuyerera kwe gloss kunokonzerwa nekusawirirana kwe solvent - chinhu chakakosha pakugadzira ne high boiling point solvents inoshandiswa mumaindasitiri. Kuyera inline kunobvisa kunonoka kubva pakutora sampuro nemaoko, izvo zvinowanzo kukonzera njodzi dzakakomba dzekunze kwe spec mu techniques dze pigment dispersion dzependi ne coatings.
Chiyero cheLonnmeter tuning fork density meter chinopa chiyero chakananga 24/7, zvichibvisa kuvimba nekuongorora kwerabhoritari nguva nenguva. Kuverengwa kwehuwandu hwezvinhu panguva imwe chete kunomisa mabheti asingateereri mitemo vasati vaenderera mberi nekuzadza - zvakakosha kuti vapfeke ne nitrocellulose lacquer uye polymer coating inoenderana nehuwandu chaihwo hwe solvent.
Kugara uchitarisa kunoita kuti pave nekugadzirisa nekukurumidza kusarudza solvent kuti iparadzirwe pigment zvichienderana nekusiyana kwemaitiro panguva chaiyo. Izvi zvinovimbisa kugadzikana kwebatch-to-batch, kudzorwa kwakasimba kwe gloss, uye chimiro chefirimu chakafanana kunyangwe panguva yekumhanya kukuru.
Kumbira mutengo weLonnmeter inline density meter yekudzora nitrocellulose lacquer. Gadzirisa zvakanyatsonaka solvents dzinofashaira zvakanyanya kuti dzishandiswe mumaindasitiri, chengetedza matekiniki ekuparadzira pigment akakodzera pakupenda nekuputira, uye wedzera gloss ne high gloss coatings zvichibva pa nitrocellulose lacquer.
Nguva yekutumira: Ndira-27-2026
