HDPEthiab PVC

Cov ntaub ntawv yas yog heev elastic thiab malleable. Lawv tuaj yeem raug molded, nias los yog nrum rau hauv cov duab sib txawv. Lawv feem ntau yog ua los ntawm cov roj thiab cov nkev. Muaj ob hom yas; thermoplastics thiab thermoset polymers.

Thaum cov thermoset polymers tsuas yog yaj thiab zoo li ib zaug thiab nyob twj ywm ib zaug txias, thermoplastics tuaj yeem yaj thiab zoo li qub thiab yog li rov ua dua tshiab.

Cov thermoplastics yog siv los ua cov thawv, lub raj mis, roj tso tsheb hlau luam, cov rooj zaum thiab cov rooj zaum, cov txee, cov hnab yas, cable insulators, mos txwv panels, cov khoom ua si pas dej ua ke, upholstery, khaub ncaws thiab kav dej.

Muaj ntau ntau hom thermoplastics, thiab lawv raug cais raws li amorphous lossis semi-crystalline. Ob tug ntawm lawv yog amorphousPVC(polyvinyl chloride) thiab semi-crystalline HDPE (high density polyethylene). Ob leeg yog cov khoom siv polymers.

Polyvinyl chloride (PVC) yog ib qho pheej yig thiab ruaj khov vinyl polymer siv hauv kev tsim kho. Nws yog qhov thib peb feem ntau siv yas tom qab polyethylene thiab polypropylene thiab yog siv dav hauv kev tsim cov kav dej. Nws yog lub teeb yuag thiab muaj zog, ua rau nws nrov heev hauv kev siv cov kav dej saum toj thiab hauv av. Nws yog qhov ruaj khov heev thiab haum rau kev faus ncaj qha thiab trenchless installation.

Ntawm qhov tod tes, high density polyethylene (HDPE) yog polyethylene thermoplastic ua los ntawm roj av. Nws muaj zog dua, nyuaj dua, thiab tuaj yeem tiv taus qhov kub thiab txias.
HDPE kav dej yog yooj yim rau siv nyob rau hauv cov kav dej hauv av, raws li lawv tau pom los dampen thiab nqus yoj nthwv dej, yog li txo qis surges uas tuaj yeem cuam tshuam rau lub cev. Lawv kuj muaj qhov zoo tshaj plaws sib koom ua ke compression tsis kam thiab muaj ntau dua puas thiab kub resistant.

Txawm hais tias ob qho tib si cov ntaub ntawv muaj zog thiab ruaj khov, lawv sib txawv ntawm lub zog thiab lwm yam. Ntawm ib sab, lawv tau tsim los tiv thaiv kev ntxhov siab sib txawv. Txhawm rau ua tiav qhov ntsuas siab tib yam li PVC yeeb nkab, HDPE yeeb nkab phab ntsa yuav tsum yog 2.5 npaug ntawm cov yeeb nkab PVC.

Txawm hais tias ob qho tib si cov khoom siv los ua cov foob pob hluav taws,HDPEtau pom tias tsim nyog thiab siv tau yooj yim dua vim tias nws tuaj yeem tua cov foob pob hluav taws mus rau qhov siab kom zoo. Yog tias nws tsis pib hauv lub thawv thiab tawg, lub thawv HDPE yuav tsis tawg nrog lub zog ntau npaum li lub thawv PVC.

Los xaus:

1. Polyvinyl Chloride (PVC) yog ib qho pheej yig thiab ruaj khov vinyl polymer siv hauv kev tsim kho, thaum High Density Polyethylene (HDPE) yog polyethylene thermoplastic ua los ntawm cov roj av.
2. Polyvinyl chloride yog qhov thib peb feem ntau siv cov yas, thiab polyethylene yog ib qho ntawm cov yas siv ntau tshaj plaws.
3. PVC yog amorphous, thaum HDPE yog semi-crystalline.
4. Ob leeg muaj zog thiab ruaj khov, tab sis muaj zog sib txawv thiab kev siv sib txawv. PVC hnyav dua thiab muaj zog dua, thaum HDPE nyuaj dua, kev puas tsuaj ntau dua thiab kub-tiv taus.
5. Cov kav dej HDPE tau pom tias muaj kev cuam tshuam thiab nqus cov kev poob siab, yog li txo qis qis uas tuaj yeem cuam tshuam rau lub cev, thaum PVC tsis tuaj yeem.
6. HDPE yog qhov tsim nyog rau kev teeb tsa tsis tshua muaj siab, thaum PVC zoo dua rau kev faus ncaj qha thiab trenchless installation.