Yas Cheebtsam ntawm lub hnab ua tshuab
Tso lus
Lub hnab ua tshuab yog lub tshuab ua ntau lub hnab yas lossis lwm lub hnab ntim khoom. Nws txoj kev ua ntau yam yog cov hnab yas nrog ntau qhov sib txawv, tuab thiab specifications. Koj puas paub cov hnab yas ua li cas? Nws cov khoom yog dab tsi?
Qhov tseeb, cov khoom siv raw ntawm cov hnab yas yog tsim los ntawm ntau yam khoom, nrog rau cov khoom siv hluavtaws, muab tub lim, plasticizer, stabilizer, thiab lwm yam.
Kub txiav hnab ua tshuab
Synthetic resin. Synthetic resin yog qhov tseem ceeb tshaj plaws ntawm cov yas, thiab nws cov ntsiab lus hauv plastics feem ntau yog 40 feem pua ~ 100 feem pua. Vim tias nws cov ntsiab lus loj thiab qhov xwm txheej ntawm cov resin feem ntau txiav txim siab qhov xwm txheej ntawm cov yas, tib neeg feem ntau suav hais tias cov resin yog ib lub ntsiab lus ntawm cov yas. Piv txwv li, PVC resin thiab PVC yas, phenolic resin thiab phenolic yas tsis meej pem. Qhov tseeb, resin thiab yas yog ob lub ntsiab lus sib txawv. Resin yog ib yam ntawm cov polymer raw, uas tsis yog tsuas yog siv los tsim cov yas, tab sis kuj yog siv los ua cov ntaub ntawv raw rau txheej, nplaum thiab hluavtaws fibers. Ntxiv rau ib feem me me ntawm cov yas uas muaj 100 feem pua cov resin, feem coob ntawm cov yas xav tau lwm yam khoom ntxiv rau cov khoom tseem ceeb.
Filler, tseem hu ua muab tub lim, tuaj yeem txhim kho lub zog thiab kub ua haujlwm ntawm cov yas thiab txo tus nqi ntawm cov yas. Piv txwv li, qhov sib ntxiv ntawm cov hmoov ntoo rau hauv phenolic resin tuaj yeem txo tus nqi zoo, ua phenolic yas yog ib qho ntawm cov yas uas pheej yig tshaj plaws, thiab txhim kho cov neeg kho tshuab lub zog. Cov fillers tuaj yeem muab faib ua cov organic fillers thiab inorganic fillers. Lub qub yog ntoo hmoov, rags, ntawv thiab ntau yam textile fibers, thaum lub tom kawg yog iav fiber, diatomite, asbestos, carbon dub, thiab lwm yam.
Plasticizers, plasticizers tuaj yeem ua kom cov yas thiab softness ntawm cov yas, txo cov brittleness, thiab ua kom cov yas yooj yim rau cov txheej txheem thiab cov duab. Plasticizers feem ntau yog kub boiling point organic tebchaw uas yog miscible nrog resins, non-toxic, tsw tsw, lub teeb thiab kub ruaj khov, thiab feem ntau siv yog phthalates. Piv txwv li, nyob rau hauv zus tau tej cov PVC yas, yog hais tias ntxiv plasticizers, mos PVC yas yuav tau; yog tias tsis muaj lossis tsawg dua cov yas yas ntxiv (dosage<10%), rigid PVC plastics can be obtained.
Stabilizer: Txhawm rau tiv thaiv kev puas tsuaj thiab kev puas tsuaj ntawm cov khoom siv hluavtaws los ntawm kev ua haujlwm ntawm lub teeb thiab cua sov thaum ua thiab siv, thiab ua kom lub neej ntev, lub tshuab ua lub hnab yuav tsum ntxiv stabilizer rau hauv cov yas. Feem ntau suav nrog stearate, epoxy resin, thiab lwm yam.
