PVA hmoov siv rau dab tsi?

Polyvinyl cawv (PVA) hmoov, tseem hu ua PVA resin, yog ntau yam polymer uas pom cov ntawv thov thoob plaws ntau qhov kev lag luam vim nws cov khoom tshwj xeeb. Nov yog qee qhov kev siv PVA hmoov:

1. Adhesive Applications:

PVA hmoov yog dav siv los ua cov khoom tseem ceeb hauv kev tsim cov nplaum thiab cov nplaum. Thaum yaj hauv dej, PVA tsim cov kua nplaum uas tsis muaj xim, nrog rau kev sib txuas zoo heev thiab ua kom zoo rau ntau yam substrates xws li ntoo, ntawv, textiles, thiab cov khoom ntxeem tau. PVA adhesives feem ntau yog siv rau hauv kev ua haujlwm ntoo, ntim cov ntaub ntawv, phau ntawv khi, thiab lwm yam kev siv sib txuas.

2. Textile Sizing thiab Finishing:

Hauv kev lag luam textile, PVA hmoov yog ua haujlwm los ua tus neeg sawv cev rau kev sib zog, lub zog, thiab smoothness rau yarns thiab fabrics. PVA-based sizing formulations yog siv rau warp yarns ua ntej weaving los txhim kho weaving efficiency, txo cov xov paj tawg, thiab txhim kho ntaub zoo. Tsis tas li ntawd, PVA tuaj yeem siv los ua tus neeg sawv cev ua kom tiav los ntxiv kev tiv thaiv wrinkle, crease rov qab, thiab cov av tso tawm cov khoom rau cov ntaub ntawv tiav.

3. Ntawv Txheej thiab Ntim:

PVA hmoov yog siv nyob rau hauv daim ntawv kev lag luam rau txheej daim ntaub ntawv los txhim kho cov nto ntawm daim ntawv thiab paperboard khoom. PVA-raws li txheej txheej muab kev txhim kho kev luam ntawv, number case adhesion, thiab cov khoom thaiv, ua rau lawv tsim nyog rau kev luam ntawv zoo thiab ntim cov ntawv thov. Tsis tas li ntawd, PVA txheej tuaj yeem txhim kho lub zog, tawv, thiab noo noo tsis kam ntawm cov khoom siv, txhim kho lawv cov kav ntev thiab kev ua haujlwm.

4. Khoom siv:

Hauv kev tsim kho, PVA hmoov tau muab tso rau hauv ntau yam khoom siv hauv tsev rau nws cov nplaum thiab cov khoom siv ntxiv. PVA-raws li dispersions feem ntau yog siv los ua cov khoom sib txuas hauv cov khoom siv cementitious xws li cov nplais nplaum, cov khoom sib txuas, thiab plaster formulations. PVA kuj tseem tuaj yeem ntxiv rau cov cement sib tov los txhim kho kev ua haujlwm, adhesion, thiab tawg tiv thaiv hauv mortar thiab pob zeb siv.

5. Polymer films thiab ntim:

PVA hmoov yog ua hauj lwm nyob rau hauv zus tau tej cov polymer films thiab ntim cov ntaub ntawv vim nws cov zaj duab xis-forming zog thiab barrier kev ua tau zoo. PVA zaj duab xis nthuav tawm qhov pom tseeb zoo, ua kom yooj yim, thiab ua kom tsis muaj dej noo, ua rau lawv tsim nyog rau kev siv xws li ntim khoom noj, cov yeeb yaj kiab ua liaj ua teb, thiab cov txheej txheem tshwj xeeb. PVA-raws li cov yeeb yaj kiab tuaj yeem siv los ua cov khoom ntim dej-soluble rau cov khoom siv ib zaug thiab cov hnab ntim tshuaj ntxuav tes.

6. Cov Khoom Siv Kho Tus Kheej:

PVA hmoov yog siv rau hauv kev tsim kho tus kheej thiab cov khoom kom zoo nkauj rau nws cov yeeb yaj kiab-tsim thiab thickening zog. PVA-based formulations muaj nyob rau hauv cov khoom xws li cov plaub hau styling gels, tshuaj tsuag plaub hau, lub ntsej muag lub ntsej muag, thiab daim tawv nqaij cream. PVA pab txhim kho kev ntxhib los mos, ruaj khov, thiab kev ua haujlwm ntawm cov khoom no, txhim kho lawv cov neeg siv khoom txaus siab thiab ua haujlwm tau zoo.

Xaus:

Hauv kev xaus, PVA hmoov yog ntau yam polymer nrog ntau yam kev siv thoob plaws hauv kev lag luam. Los ntawm cov nplaum thiab textiles mus rau cov ntawv txheej thiab cov ntaub ntawv tsim kho, PVA plays lub luag haujlwm tseem ceeb hauv kev txhim kho cov khoom lag luam, kev ua haujlwm ntev, thiab kev ua haujlwm. Nws cov khoom nplaum, muaj peev xwm ua yeeb yaj kiab, thiab kev sib raug zoo nrog lwm cov ntaub ntawv ua rau PVA hmoov muaj txiaj ntsig zoo hauv ntau cov txheej txheem tsim khoom, pab txhawb rau kev tsim cov khoom tshiab thiab cov khoom zoo hauv ntau lub lag luam.