Niaj hnub no peb yuav qhia peb cov khoom tseem ceeb rau epe net, nws suav nrog LDPE HDPE PP.

ib ,Qhov sib txawv tseem ceeb ntawm LDPE (tsawg ntom polyethylene) thiab HDPE (siab ntom ntom polyethylene) yog nyob rau hauv lawv qhov ntom ntom, lub cev, siv, thiab lwm yam.

1. Ceev thiab zoo li:

Qhov ceev ntawm LDPE feem ntau yog nyob nruab nrab ntawm 0.910-0.940g / cm³, thaum qhov ceev ntawm HDPE yog nyob nruab nrab ntawm 0.940-0.976g / cm³.

LDPE muaj lub ntsej muag dawb dawb thiab zoo nkauj rau qee yam hauv cov ntu nyias, thaum HDPE feem ntau yog opaque thiab muaj lub ntsej muag dawb thiab zoo nkauj.

2. Lub cev muaj zog:

LDPE yog qhov muag muag, muaj qhov zoo toughness, zoo pob tshab, thiab xav tias nplua. Nws muaj qhov tsis zoo ntawm qhov ruaj khov thaum lub sij hawm molding thiab ua, thiab nws nyuaj rau kev sib txuas.

HDPE muaj lub zog siab, zoo toughness, thiab muaj zog rigidity, ze rau PP (polypropylene), tawv dua li PP, thiab muaj qhov kub thiab txias.

3.Siv:

LDPE muaj cov viscosity tsawg, zoo fluidity, thiab yooj yim rau txheej txheem. Nws yog tsim rau kev tsim cov kav dej haus, thiab lwm yam.

HDPE yog tsim rau kev kos duab, qib txhaj tshuaj molding, qib hollow thiab tshuab qib cov khoom lag luam, xws li nuv ntses nets, lub raj mis dej haus thiab cov hnab ntim khoom.

4. Tshuaj tiv thaiv:

Ob leeg muaj kev tiv thaiv zoo rau feem ntau cov tshuaj hauv tsev thiab kev lag luam, tab sis HDPE tiv taus cov kua qaub, alkali corrosion thiab cov kuab tshuaj organic.

5. Thaum tshav kub kub ua hauj thiab laus kuj:

LDPE muaj cov cua sov tsis zoo, kev laus ua haujlwm thiab ib puag ncig kev ntxhov siab tawg ua haujlwm raws li HDPE, thiab nws yog qhov ua rau laus, decomposition thiab discoloration.

HDPE muaj qhov kub thiab txias tsis zoo tab sis tsis zoo kub tsis kam. Qhov tsis zoo yog tias nws qhov kev laus tsis kam thiab ib puag ncig kev ntxhov siab tawg tsis zoo li LDPE.

二,Qhov sib txawv tseem ceeb ntawm PP thiab PE cov ntaub ntawv yog raws li nram no:

1. Cov khoom xyaw: Cov khoom tseem ceeb ntawm PP yog polypropylene, thaum lub ntsiab ntawm PE yog polyethylene.

2. Cov yam ntxwv: PP feem ntau yog cov khoom tsis muaj xim tsis muaj xim, tsis muaj ntxhiab tsw thiab tsis muaj tshuaj lom, muaj kev kub siab ua haujlwm, pob tshab, txhua yam muaj zog thiab lwm yam ntxwv; PE yog cov khoom noj khoom haus uas tau lees paub hauv ntiaj teb, tsis muaj tshuaj lom, tsis qab, tsis muaj ntxhiab, zoo li siv quav ciab, ua raws li cov qauv kev nyiam huv rau kev ntim khoom noj, muaj ductility zoo, tsis yooj yim puas, thiab muaj cua sov sealability zoo heev.

3. Scope ntawm kev siv: PP tuaj yeem siv los ua lub tsev cog khoom cua awnings, mulch films, kab lis kev cai fwj, thiab lwm yam, thiab tseem tuaj yeem siv los ua cov thawv khoom noj khoom haus, hnab ntim khoom noj, thiab lwm yam. PE tuaj yeem ua tiav los ntawm tshuab molding, extrusion. , txhaj tshuaj molding thiab lwm txoj kev, thiab yog siv dav hauv kev tsim cov yeeb yaj kiab, cov khoom hollow, thiab lwm yam.