Qhov ntsuas kub rau lub thawv ntim khoom
01 Thawv hnab raw khoom
Lub thawv yog ib lub thawv yas hloov tau yooj yim nrog polypropylene thiab polyethylene resin ua cov khoom siv raw, nrog lub ntim tsawg dua 3m³ thiab muaj kev nyab xeeb ntawm kev thauj khoom hnyav tsawg dua lossis sib npaug li 3 tons.
Melting point 165 degree, softening ntawm txog 155 degree;
Kev khiav hauj lwm kub ntawm -30 degree mus rau 140 degree .
Nws tuaj yeem tiv thaiv corrosion ntawm acid, alkali, ntsev tov thiab ntau yam organic solvents hauv qab 80 degree, thiab tuaj yeem decompose nyob rau hauv kub thiab oxidation.
Melting point 85 degree mus rau 110 degree, nrog zoo heev kub tsis kam;
polythene
Qhov tsawg kawg nkaus kev khiav hauj lwm kub tuaj yeem ncav cuag -100 degree rau -70 degree, zoo tshuaj stability, tsis kam mus rau feem ntau acid thiab lub hauv paus yaig (tsis resistant rau acids nrog oxidizing zog)
02
Lub hnab ntim khoom siv kub?
Dab tsi yog qhov kub ntawm cov hnab ntim khoom ua los ntawm polypropylene thiab polyethylene?
Raws li lub teb chaws tus qauv GB / T 10454-2000, qhov ntsuas kub ntawm lub thawv ntim yog -35 degree .
Muab lub hnab ntim khoom tso rau hauv ib qho -35 degree qhov kub thiab txias lub thawv rau ntau tshaj 2 teev, thiab tom qab ntawd quav cov khoom kuaj ib nrab rau 180 degrees los xyuas seb cov khoom siv substrate puas puas, tawg thiab lwm yam tsis zoo.
Qhov ntsuas kub ntsuas kub yog 80 degree.
Ib qho kev thauj khoom ntawm 9.8N tau siv rau cov khoom kuaj thiab muab tso rau hauv qhov cub ntawm 80 degree rau 1h. Tam sim ntawd tom qab tshem tawm, ob qhov sib tshooj ntawm cov khoom sib tshooj tau sib cais thiab qhov chaw raug tshuaj xyuas rau adhesion, tawg thiab lwm yam tsis zoo.
Raws li tus qauv ntsuas, lub thawv ntim tuaj yeem siv rau hauv ib puag ncig ntawm -35 degree C txog 80 degree C, tab sis nws tsis pom zoo rau kev siv mus sij hawm ntev hauv qhov chaw kub thiab txias.
