Seb puas yuav ua tau ib daim ntawv xuab zeb zoo, qhov kev xaiv ntawm daim ntawv puag yog qhov tseem ceeb

Paper puag yog cov khoom siv thaum ntxov tshaj plaws los siv cov cuab yeej abrasive, tab sis kuj yog cov khoom siv tau yooj yim tshaj plaws, nrog rau cov ntawv ua cov substrate nyob rau hauv cov ntaub ntawv abrasive thaum ntxov sib tsoo daim ntaub ntawv tuav ib feem. Vim tias qhov saum npoo ntawm daim ntawv yog tiaj tus thiab ntom, nws yog ib qho yooj yim los ua kom zoo-grained xuab zeb siv, thiab nws tseem siv rau qee qhov kev sib tsoo. Lub hauv paus ntawv siv los ua cov xuab zeb siv thiab coated abrasives yog ua los ntawm ib tug tshwj xeeb muaj zog thiab elastic fiber. Nws yog tus cwj pwm los ntawm lub tiaj tus substrate nto, me elongation, yooj yim substrate kev kho mob, thiab kuj tsis tshua muaj nqi ntau lawm.

Muaj ntau ntau yam ntawm cov ntaub ntawv hauv paus specifications, thiab lawv qhov zoo tshaj plaws yog qhia los ntawm cov nram qab no lub cev thiab mechanical Performance index, thiab cov kev cai ntawm abrasive siv thiab coated abrasives rau hauv paus ntawv kuj qhia los ntawm cov ntsuas no.

1) Quantitative.

Kuj tseem hu ua qhov hnyav, hais txog qhov hnyav ntawm daim ntawv ib square meter, chav tsev yog g / m2. Qhov no yog qhov ntsuas tseem ceeb heev rau cov ntawv abrasive coated puag, uas feem ntau cuam tshuam rau lwm yam khoom siv lub cev thiab cov khoom siv ntawm daim ntawv substrate. Yog li ntawd, abrasive coated base paper kuj tau muab faib ua ntau yam (saib daim duab 2.5.). Raws li qhov sib txawv ntawm cov ntawv hauv paus, coated abrasives puag ntawv feem ntau tuaj yeem muab faib ua A, B, C, D, E, F thiab lwm qib, hom A yog qhov lightest, hom F yog qhov hnyav tshaj. Sheet sandpaper, dej sandpaper feem ntau siv cov ntawv teeb. Fine grained teeb daim ntawv, zoo softness; Coarse gritntawv xuab zebthiab siv xuab zeb siv cov ntawv hnyav, lub zog siab, qhov tshwj xeeb ntawm kev siv cov ntawv hauv paus yog qhia

                                                          .

2) Thickness.

Lub thickness ntawm tus qauv ntsuas ncaj qha nyob rau hauv ib tug tej yam siab, qhia nyob rau hauv millimeters. Kev ntsuas tau ua rau ntawm daim ntawv thickness meter nrog thaj tsam ntawm (2±0.2) cm2 thiab siab ntawm (10.0±1.0 ) N / cm2. Feem ntau hais lus, lub thickness ntawm daim ntawv yog loj, lub zog yog siab, tab sis yog hais tias lub thickness yog tsis tsim nyog los mus nce lub zog, lub softness ntawm lub hauv paus ntawv yuav raug txo. Lub thickness ntawm coated abrasive ntawv feem ntau yog 0.2 ~ 0.4mm.

3) Tightness.

Qhov hnyav ntawm daim ntawv hauv ib lub cubic centimeter, qhia hauv g / cm3. Thaum cov khoom zoo ib yam, qhov nruj yog qhov loj, lub thickness me me, cov qauv ntawv yog nruj, lub zog loj, tab sis nws yooj yim tawg; Ntawm qhov tsis sib xws, yog tias qhov nruj me me, lub thickness yog loj, daim ntawv qauv yog xoob thiab mos, tab sis nws tseem yuav ua rau qhov tsis zoo ntawm cov kua nplaum loj, yog li qhov nruj ntawm coated abrasive yuav tsum tau xaiv me ntsis. Tightness yog xam los ntawm qhov ntau thiab tsawg, thiab kev sib raug zoo yog raws li nram no:

Tightness D= quantitative W/ (thickness d × 1000)

4) Vertical thiab kab rov tav.

Cov kev taw qhia thaum uas tig mus rau lub tshuab ntawv yog hu ua longitudinal, thiab cov kev taw qhia perpendicular rau nws yog hu ua kab rov tav. Txij li ntau qhov ntsuas tau muab faib ua cov lus qhia ntsug thiab kab rov tav, nws yog ib qho tsim nyog yuav tsum paub cov lus qhia ntsug thiab kab rov tav ntawm daim ntawv ua ntej kuaj.

5) Pem hauv ntej thiab nram qab.

Lub hauv paus ntawv yog muab faib ua ob qhov chaw, ib sab ntawm lub hauv paus ntawv txuas nrog tooj liab mesh ntawm daim ntawv tshuab yog hu ua sab nraub qaum lossis sab mesh, thiab sab nraud yog hu ua sab zoo lossis sab du.

6) Tensile zog.

Sawv cev qhov siab tshaj plaws (N) uas daim ntawv tuaj yeem tiv taus. Nws tuaj yeem nthuav tawm hauv peb hom:

Tsis muaj zog tensile (N) - qhia raws li cov resin ntsuas ncaj qha rau ntawm lub zog tensile tester ntawm tus qauv dav teev nyob rau hauv daim ntawv qauv.

Hla ntev (m) - qhov ntev ntawm daim ntawv so vim nws qhov hnyav, uas yog xam los ntawm kev ua raws li cov qauv.

Kev ncua ntev (m)=lub zog tensile ntawm tus qauv (g) / [ Dav ntawm tus qauv (m) × ntau npaum li cas ntawm tus qauv (g / m2)]

Lub zog tensile (N / cm2) ntawm chav tsev hla ntu yog xam raws li cov qauv hauv qab no:

Chav tsev interfacial tensile lub zog (N / cm2)=lub zog tensile kiag li (N) ntawm cov qauv / ntu ntu ntawm cov qauv (cm2)

Lub zog tensile ntawm lub hauv paus ntawv siv rau txheej abrasive cov cuab yeej yog ib qho tseem ceeb ntawm cov cuab yeej cuab tam, uas yog ib qho tseem ceeb heev rau kev tsim khoom thiab siv.

7) Elongation.

Sawv cev lub cev ntev ntawm daim ntawv thaum nws tau txais nro kom txog thaum nws tawg, qhia raws li feem pua ​​​​ntawm cov qauv ntev ntawm cov ntawv hauv paus. Feem ntau, qhov elongation ntawm cov ntawv hauv paus yog me me heev.

8) Rupture tsis kam.

Hais txog daim ntawv nyob rau hauv chav tsev cheeb tsam ntawm lub xauv tuaj yeem tiv taus, sib xws, nce siab tshaj plaws. Chav tsev yog N / cm2, uas yog "txiav txim siab qhov kev tiv thaiv tawg", hu ua qhov tawg tsis kam; Cov txheeb ze hnav tsis kam yog qhov hnav tsis kam hloov pauv mus rau qhov ntau 100g / cm2 ntawm daim ntawv tawg tsis kam, cov qauv kev suav yog:

Cov txheeb ze tawg tsis kam (N / cm2)=qhov kev tiv thaiv tawg ntawm tus qauv × 100 / tus nqi ntau ntawm cov qauv

Qhov kev tiv thaiv tawg nyob hauv lub ntiaj teb yog qhov kev xav ntawm lub zog thiab brittleness, thiab cov ntawv hauv paus siv hauv coated abrades yuav tsum tau them nyiaj txaus rau qhov kev tiv thaiv tawg.

9) Tear degree.

Nws yog hais txog lub zog uas yuav tsum tau rhuav tshem daim ntawv ua ntej txiav mus rau ib qho ntev, qhia hauv g, uas tseem yog ib qho tseem ceeb ntawm cov cuab yeej cuab tam ntsuas qhov ntsuas lub zog thiab brittleness ntawm daim ntawv.

10) Folding tsis kam.

Hais txog pes tsawg lub sij hawm daim ntawv tuaj yeem tiv taus 180 degree ntawm folding nyob rau hauv ib qho kev nro (kom txog thaum nws tawg). Nws qhia txog qhov brittleness ntawm daim ntawv, uas yog, lub peev xwm los tiv thaiv mos folding, uas feem ntau yog nyob ntawm lub zog ntawm fiber nws tus kheej, thiab kuj yog ze ze rau lub thickness thiab nruj.

11) Cov dej noo.

Kuj hu ua av noo, hais txog cov qauv ntawv nyoos ntawm 100 ~ 106 degree ziab kom qhov hnyav tas li kom txo qhov tseem ceeb ntawm tus qauv hnyav piv, qhia tias feem pua.

12) Aws.

Qhov piv ntawm qhov hnyav ntawm qhov seem tom qab hlawv rau qhov hnyav ntawm tus qauv, qhia raws li feem pua.

13) Fiber ratio.

Nws yog hais txog kev xaiv ntawm cov ntaub ntawv raw cov ntaub ntawv thaum ua ntawv, thiab feem ntau ntawm cov ntaub ntawv raw cov ntaub ntawv sib xyaw yog hu ua fiber ratio. Cov ntawv sib txawv, ntau yam kev ua haujlwm yuav tsum sib txawv, qhov sib piv ntawm fiber ntau kuj txawv. Abrasive puag ntawv feem ntau yog ua los ntawm 100 feem pua ​​unbleached sulfate ntoo pulp.

14) Interlayer zog.

Txiav cov qauv qhib nrog rab riam ntse ua ntej, clamp ob kawg ntawm kev txiav nrog lub tshuab nro, thiab ntsuas qhov nro, hauv N / mm. Nws yog ib qho tseem ceeb Performance index rau coated abrasive ntawv, tshwj xeeb tshaj yog abrasive puag ntawv.

15) Ua pa.

Lub tshuab nqus pa tau siv los txiav txim siab lub sijhawm ntawm qee qhov huab cua dhau los ntawm cov qauv ntawv hauv qab (min / ml), lossis qhov ntim ntawm huab cua dhau los ntawm cov qauv ntawm ib lub sijhawm (ml / min). Huab cua permeability qhia qhov nruj ntawm cov ntawv hauv paus fiber ntau thiab cov permeability ntawm cov ntawv hauv paus rau qee yam.

16) Kev nqus dej.

Lub ntsuas dej nqus tau siv los ntsuas qhov nqus dej ntawm cov qauv ntawm ib lub sijhawm thiab ib cheeb tsam, thiab chav tsev yog g / m2. Nws kuj qhia txog qhov nruj thiab permeability ntawm cov ntawv hauv paus rau qee yam.

Ntxiv rau

Tseem muaj smoothness, sizing, thiab lwm yam. Latex ntawv thiab latex cov ntsiab lus, antistatic puag ntawv thiab resistivity.

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