Dab tsi yog qhov kev paub ntawm ib puag ncig tus phooj ywg kub yaj nplaum nplaum?

Kub yaj nplaum nplaum yog cov nplaum yas uas nws lub cev hloov pauv nrog qhov kub thiab txias hauv qhov kub thiab txias. Thaum rhuab thiab yaj mus rau ib qho kub, nws dhau los ua kua uas tuaj yeem ntws thiab muaj qee yam viscosity. Lub melted EVA kub yaj nplaum nplaum yog lub teeb xim av los yog dawb. EVA kub yaj nplaum yog tsim los ntawm cov cob qhia yooj yim, tackifier, viscosity modifier thiab antioxidant.

Nws yog non-toxic thiab tasteless, thiab yog ib puag ncig tus phooj ywg chemical khoom. Lub hauv paus ntsiab lus ntawm kub yaj nplaum yog raws li nram no:

1. softening point, qhov kub ntawm ib yam khoom softens. Feem ntau nws yog hais txog qhov kub ntawm qhov amorphous polymer pib mos. Nws tsis tsuas yog cuam tshuam nrog cov qauv ntawm cov polymer, tab sis kuj rau qhov loj ntawm nws qhov hnyav molecular. Muaj ntau txoj kev ntsuas.

Cov kev ntsuas sib txawv feem ntau ua rau cov txiaj ntsig tsis sib xws. Txoj kev siv ntau tshaj yog txoj kev Vicat thiab lub ntiaj teb txoj kev.

2. Viscosity: Thaum cov kua ntws, cov cuab yeej ntawm kev sib txhuam sab hauv ntawm nws cov molecules hu ua viscosity ntawm cov kua. Lub viscosity yog qhia los ntawm viscosity, uas yog ib qho tseem ceeb tiv thaiv siv los qhia cov khoom ntawm cov kua. Viscosity muab faib ua dynamic viscosity, kinematic viscosity thiab conditional viscosity.

3. tev lub zog: Lub zog yuav tsum tau tev ib chav tsev dav ntawm qhov sib cuag ntawm cov ntaub ntawv daig ua ke. Lub kaum sab xis ntawm tev yog 90 degrees lossis 180 degrees, thiab ib leeg yog: Newton / meter (N / m).

4. Initial tack: Thaum muaj kev sib cuag luv luv ntawm cov khoom thiab cov nplaum nplaum ntawm lub siab-rhiab nplaum daim kab xev nrog lub siab me me, qhov adhesion ntawm daim nplaum nplaum rau cov khoom yog hu ua thawj tack. Lub hauv paus ntsiab lus ntawm kev xeem, yob ib lub pob hlau hla lub nplaum nplaum ntawm daim kab xev dag ntawm lub phaj inclined.

Raws li qhov loj ntawm lub pob steel uas cov nplaum nplaum ntawm qhov ntev ntev tuaj yeem lo rau,

5. Tuav lub hwj chim, lub peev xwm ntawm daim kab xev nplaum los tiv thaiv kev hloov pauv thaum muaj qhov hnyav nrog qhov hnyav uas tau teev tseg yog vertically raug tshem tawm nyob rau hauv qhov ntev ntawm lub siab-rhiab nplaum daim kab xev pasted rau ntawm adherend. Siv daim ntawv xeem kom txav tau ib qho kev ncua deb ntawm lub sij hawm los yog ib lub sij hawm txav deb ntawm lub rooj.

6. Tus nqi cohesion yog kev sib nrig sib attraction ntawm qhov chaw nyob ib sab hauv tib yam khoom, thiab qhov kev sib nrig sib attraction yog qhov tshwm sim ntawm molecular quab yuam ntawm molecules ntawm tib yam khoom.

Nws tsuas yog pom thaum cov molecules nyob ze heev (tsawg dua 10e-6 cm).

7.tensile lub zog ntawm kev tawg, hauv kev sim tensile, lub tensile kev nyuaj siab ntawm cov qauv mus txog rau thaum nws tawg yog lub tensile lub zog, uas yog hu ua tensile zog nyob rau hauv academia, thiab feem ntau hu ua tensile zog nyob rau hauv engineering daim ntaub ntawv. zog.

8. Huab cua tsis kam yog hais txog cov txheej txheem kev laus xws li kev hloov xim thiab hloov xim ntawm cov khoom yas vim yog lub hnub ci, qhov kub thiab txias hloov, cua thiab nag thiab lwm yam sab nraud. Ntawm lawv, hluav taws xob ultraviolet yog qhov tseem ceeb hauv kev txhawb nqa cov yas yas.

9. Lub sij hawm kho: lub sij hawm luv tshaj plaws rau cov kua nplaum yuav tsum nias ntawm ob lub substrates los ua ib daim ntawv cog lus ruaj khov, thiab lub sij hawm tuav yuav tsum tsis txhob tsawg tshaj li lub sij hawm kho kom zoo.

10. Lub sij hawm qhib: yog hais txog lub sij hawm ncua sij hawm txij li thaum cov kua nplaum tau siv mus txog rau thaum qhov chaw tseem tuaj yeem txuas rau lub substrate. Cov kua nplaum muaj qhov sib txuas zoo hauv lub sijhawm qhib. Nws muaj feem xyuam rau yam xws li kua nplaum, qhov kub thiab txias, substrate, thiab tus nqi ntawm cov kua nplaum.